KURZWEIL PC3X Schematic

PC3x

Service Manual

©2008 All rights reserved. Kurzweil® is a product line of Young Chang Co., Ltd. Young Chang®, Kurzweil®, and PC3® are trademarks of Young Chang Co., Ltd. All other products and brand names are trademarks or registered trademarks of their respective companies. Product features and speciﬁcations are subject to change without notice.

Part Number: 910515-001 Ver. 1.0

The lightning flash with the arrowhead symbol,

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE THE COVER

NO USER SERVICEABLE PARTS INSIDE

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product.

IMPORTANT SAFETY & INSTALLATION INSTRUCTIONS

INSTRUCTIONS PERTAINING TO THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS

WARNING: When using electric products, basic precautions should

always be followed, including the following:

1. Read all of the Safety and Installation Instructions and Explanation of Graphic Symbols before using the product.

2. This product must be grounded. If it should malfunction or break down, grounding provides a path of least resistance for electric current to reduce the risk of electric shock. This product is equipped with a power supply cord having an equipment-grounding conductor and a grounding plug. The plug must be plugged into an appropriate outlet which is properly installed and grounded in accordance with all local codes and ordinances.

DANGER: Improper connection of the equipment-grounding

conductor can result in a risk of electric shock. Do not modify the plug provided with the product - if it will not ﬁt the outlet, have a proper outlet installed by a qualiﬁed electrician. Do not use an adaptor which defeats the function of the equipment-grounding conductor. If you are in doubt as to whether the product is properly grounded, check with a qualiﬁed serviceman or electrician.

3. WARNING: This product is equipped with an AC input voltage selector. The voltage selector has been factory set for the mains supply voltage in the country where this unit was sold. Changing the voltage selector may require the use of a different power supply cord or attachment plug, or both. To reduce the risk of ﬁre or electric shock, refer servicing to qualiﬁed maintenance personnel.

4. Do not use this product near water - for example, near a bathtub, washbowl, kitchen sink, in a wet basement, or near a swimming pool, or the like.

5. This product should be used only with a stand or cart that is recommended by the manufacturer.

6. This product, either alone or in combination with an ampliﬁer and speakers or headphones, may be capable of producing sound levels that could cause permanent hearing loss. Do not operate for a long period of time at a high volume level or at a level that is uncomfortable. If you experience any hearing loss or ringing in the ears, you should consult an audiologist.

7. The product should be located so that its location or position does not interfere with its proper ventilation.

8. The product should be located away from heat sources such as radiators, heat registers, or other products that produce heat.

9. The product should be connected to a power supply only of the type described in the operating instructions or as marked on the product.

10. This product may be equipped with a polarized line plug (one blade wider than the other). This is a safety feature. If you are unable to insert the plug into the outlet, contact an electrician to replace your obsolete outlet. Do not defeat the safety purpose of the plug.

11. The power supply cord of the product should be unplugged from the outlet when left unused for a long period of time. When unplugging the power supply cord, do not pull on the cord, but grasp it by the plug.

12. Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.

13. The product should be serviced by qualiﬁed service personnel when:

A. The power supply cord or the plug has been damaged; B. Objects have fallen onto, or liquid has been spilled into the

product; C. The product has been exposed to rain; D. The product does not appear to be operating normally or

exhibits a marked change in performance; E. The product has been dropped, or the enclosure damaged.

14. Do not attempt to service the product beyond that described in the user maintenance instructions. All other servicing should be referred to qualiﬁed service personnel.

WARNING: Do not place objects on the product’s power supply

15. cord, or place the product in a position where anyone could trip over, walk on, or roll anything over cords of any type. Do not allow the product to rest on or be installed over cords of any type. Improper installations of this type create the possibility of a ﬁre hazard and/or personal injury.

RADIO AND TELEVISION INTERFERENCE

WARNING: Changes or modiﬁcations to this instrument not expressly

approved by Young Chang could void your authority to operate the instrument.

IMPORTANT: When connecting this product to accessories and/or other

equipment use only high quality shielded cables.

NOTE: This instrument has been tested and found to comply with the

limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This instrument generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this instrument does cause harmful interference to radio or television reception, which can be determined by turning the instrument off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

SAVE THESE INSTRUCTIONS

ii

• Reorient or relocate the receiving antenna.

• Increase the separation between the instrument and the receiver.

• Connect the instrument into an outlet on a circuit other than the one

to which the receiver is connected.

• If necessary consult your dealer or an experienced radio/television

technician for additional suggestions.

NOTICE

This apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.

AVIS

Le present appareil numerique n’emet pas de bruits radioelectriques depassant les limites applicables aux appareils numeriques de la class B prescrites dans le Reglement sur le brouillage radioelectrique edicte par le ministere des Communications du Canada.

Important Safety Instructions

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with dry cloth.

7. Do not block any of the ventilation openings. Install in accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including ampliﬁers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not ﬁt into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.

11. Only use attachments/accessories speciﬁed by the manufacturer.

12. Use only with a cart, stand, tripod, bracket, or table speciﬁed by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when unused for long periods of time.

14. CAUTION: Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type (CR2032).

15. Refer all servicing to qualiﬁed service personnel. Servicing is required when the apparatus has been damaged in any way, such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

Warning - To reduce the risk of ﬁre or electric shock, do not expose this apparatus to rain or moisture.

Do not expose this equipment to dripping or splashing and ensure that no objects ﬁlled with liquids, such as vases, are placed on the equipment.

To completely disconnect this equipment from the AC Mains, disconnect the power supply cord plug from the AC receptacle.

iii

Kurzweil International Contacts

Contact the Kurzweil ofﬁce listed below to locate your local Kurzweil representative.

Kurzweil Music Systems

19060 S. Dominies Hills Drive Rancho Dominguez California 90220 USA Telephone: (310) 637-2000 Fax: (310) 637-2025

http://www.kurzweilmusicsystems.com

Kurzweil Co., LTD

iPark Building #102, Floor 9 Jeongja-Dong 9, Bundang-Gu Soungnam-Shi, Gyeonggi-Do 463-859 South Korea

http://www.ycpiano.co.kr http://www.youngchang.com

Kurzweil PC3x Service Manual

Chapter 1 Introduction

Notes, Cautions, Warnings ............................................................................................................................................ 1-1

Rear Panel Features......................................................................................................................................................... 1-1

PC3x Front Panel............................................................................................................................................................. 1-3

Front Panel Features................................................................................................................................................ 1-3

Wheels Assembly (not shown)........................................................................................................................ 1-5

Chapter 2 Diagnostics

Diagnostic Tests ............................................................................................................................................................... 2-1

Entering Diagnostics....................................................................................................................................................... 2-1

LCD and Front Panel Buttons ................................................................................................................................ 2-2

Test Results................................................................................................................................................................ 2-2

Diagnostic Test Modes.................................................................................................................................................... 2-3

Run ............................................................................................................................................................................. 2-3

Loop ........................................................................................................................................................................... 2-3

Continuous................................................................................................................................................................ 2-3

Burn-in loop.............................................................................................................................................................. 2-3

Description of Tests......................................................................................................................................................... 2-4

SDRAM Refresh ....................................................................................................................................................... 2-4

Flash Memory........................................................................................................................................................... 2-4

MARA Validity Check ............................................................................................................................................. 2-4

MARA Communications......................................................................................................................................... 2-4

Expansion DIMM Check......................................................................................................................................... 2-5

MIDI UART............................................................................................................................................................... 2-5

External Card............................................................................................................................................................ 2-6

MARA Delay RAM.................................................................................................................................................. 2-6

MARA Sound ROM................................................................................................................................................. 2-6

Audio Output ........................................................................................................................................................... 2-7

Diagnostic Version 0.20 or earlier................................................................................................................... 2-7

Sine Wave Test................................................................................................................................................... 2-8

Chapter 3 Disassembly/Assembly

Introduction ..................................................................................................................................................................... 3-1

Notes, Cautions, Warnings ..................................................................................................................................... 3-1

Cables, Connectors................................................................................................................................................... 3-1

Cables ................................................................................................................................................................. 3-1

Cable Routing.................................................................................................................................................... 3-1

Required Tools and Materials................................................................................................................................. 3-1

Opening the PC3x ........................................................................................................................................................... 3-2

PC3x Bottom ............................................................................................................................................................. 3-2

Removing the Top Enclosure.................................................................................................................................. 3-3

Replacing the Top Enclosure .................................................................................................................................. 3-5

Closing the PC3x ...................................................................................................................................................... 3-6

Top Enclosure................................................................................................................................................................... 3-7

Removing the Enclosure Support Wall................................................................................................................. 3-8

Replacing the Enclosure Support Wall.................................................................................................................. 3-8

Removing the Connector Board............................................................................................................................. 3-9

Replacing the Connector Board ........................................................................................................................... 3-10

Removing the Slider Board....................................................................................................................................3-11

Replacing the Slider Board ................................................................................................................................... 3-12

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Kurzweil PC3x Service Manual

Removing the LCD Board..................................................................................................................................... 3-13

Replacing the LCD Board ..................................................................................................................................... 3-14

Removing the Front Panel Board......................................................................................................................... 3-14

Replacing the Front Panel Board ......................................................................................................................... 3-16

Removing the Engine Board................................................................................................................................. 3-17

Replacing the Engine Board ................................................................................................................................. 3-18

Removing the USB/xD Daughtercard................................................................................................................ 3-18

Replacing the USB/xD Daughtercard................................................................................................................. 3-18

Removing the Wheels Assembly ......................................................................................................................... 3-19

Replacing the Wheels Assembly.......................................................................................................................... 3-19

PC3x Keyboard Assembly............................................................................................................................................ 3-20

Removing the PC3x Keyboard Assembly........................................................................................................... 3-20

Replacing the PC3x Keyboard Assembly........................................................................................................... 3-21

Removing Keys ...................................................................................................................................................... 3-22

Natural/White Key ........................................................................................................................................ 3-22

Removing Natural/White Keys........................................................................................................................... 3-23

Removing Sharp/Black Keys ............................................................................................................................... 3-23

Replacing a Sharp Key .......................................................................................................................................... 3-23

Replacing a Natural/White Key.......................................................................................................................... 3-24

Servicing the Keyboard Contact Boards............................................................................................................. 3-24

Removing the Treble Contact Board ............................................................................................................ 3-24

Replacing the Treble Contact Board............................................................................................................. 3-24

Removing the Bass Contact Board ............................................................................................................... 3-24

Replacing the Bass Contact Board................................................................................................................ 3-25

Connecting the Keyboard Contact Boards ......................................................................................................... 3-25

Removing the Keyboard Contact Strips ............................................................................................................. 3-25

Replacing the Keyboard Contact Strips.............................................................................................................. 3-25

Chapter 4 Troubleshooting & Maintenance

Introduction ..................................................................................................................................................................... 4-1

Cables, Connectors................................................................................................................................................... 4-1

Cables ................................................................................................................................................................. 4-1

Cable Routing.................................................................................................................................................... 4-1

Surface-Mount Devices ........................................................................................................................................... 4-1

Required Tools and Materials................................................................................................................................. 4-1

Boot Loader...................................................................................................................................................................... 4-2

Entering the Boot Loader........................................................................................................................................ 4-2

Resets................................................................................................................................................................................. 4-2

Hard Reset................................................................................................................................................................. 4-2

Soft Reset ................................................................................................................................................................... 4-2

Saving User Data............................................................................................................................................................. 4-3

Saving to an xD Card............................................................................................................................................... 4-3

Saving to a Computer.............................................................................................................................................. 4-3

Software Updates ............................................................................................................................................................ 4-4

Updating with an xD Card ..................................................................................................................................... 4-4

Updating via Computer.......................................................................................................................................... 4-5

Rebuilding the Internal NAND Flash Memory.......................................................................................................... 4-6

Rebuilding with an xD Card .................................................................................................................................. 4-6

Rebuilding via a Computer .................................................................................................................................... 4-7

Boot EPROM .................................................................................................................................................................... 4-9

Removing the EPROM ............................................................................................................................................ 4-9

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Kurzweil PC3x Service Manual

Replacing the EPROM............................................................................................................................................. 4-9

Replacing the Battery.................................................................................................................................................... 4-10

Accessing the Battery............................................................................................................................................. 4-10

Removing the Battery............................................................................................................................................ 4-10

Installing the Battery ............................................................................................................................................. 4-10

Scanner Tests...................................................................................................................................................................4-11

Front Panel Buttons ................................................................................................................................................4-11

Alpha Wheel ........................................................................................................................................................... 4-12

Front Panel Sliders................................................................................................................................................. 4-12

Right Main Output................................................................................................................................................. 4-12

Switch Pedals 1, 2, and 3 ....................................................................................................................................... 4-12

Continuous Control Pedal 1 and 2 ...................................................................................................................... 4-12

Wheels ..................................................................................................................................................................... 4-13

Adjusting the Pitch Wheel Center................................................................................................................ 4-13

Keyboard ................................................................................................................................................................. 4-13

Adjusting Key Pressure Sensitivity.............................................................................................................. 4-13

Power Problems............................................................................................................................................................. 4-14

Dead: LEDs, LCD backlight, and xD Card socket not lit ................................................................................. 4-14

Audio Problems............................................................................................................................................................. 4-14

No Audio................................................................................................................................................................. 4-14

Front Panel Problems.................................................................................................................................................... 4-15

LCD not lit............................................................................................................................................................... 4-15

LCD lit, no characters ............................................................................................................................................ 4-15

Buttons, Sliders or Controllers not working ...................................................................................................... 4-15

Keyboard Problems....................................................................................................................................................... 4-16

Dead Keyboard....................................................................................................................................................... 4-16

Dead Note(s) or no velocity sensitivity .............................................................................................................. 4-16

One or More in a Section................................................................................................................................ 4-16

PC3x Interconnect Diagram......................................................................................................................................... 4-17

Converting the Voltage................................................................................................................................................. 4-18

Accessing the Fuses ............................................................................................................................................... 4-18

The Fuse Holder..................................................................................................................................................... 4-19

Using 5 mm X 20 mm Fuses .......................................................................................................................... 4-21

Replacing the Fuse Holder ................................................................................................................................... 4-21

Chapter 5 Parts Lists

PCB & Sub Assemblies............................................................................................................................................ 5-1

Engine Board............................................................................................................................................................. 5-1

Connector Board ...................................................................................................................................................... 5-4

Front Panel Board..................................................................................................................................................... 5-6

Slider Board............................................................................................................................................................... 5-7

Engine Board–USB/xD Daughtercard.................................................................................................................. 5-7

Button Board............................................................................................................................................................. 5-8

Wheels Assembly..................................................................................................................................................... 5-8

Keyboard Assembly................................................................................................................................................. 5-8

Miscellaneous ........................................................................................................................................................... 5-9

Chapter 6 Schematics

Engine Board Assembly–SH7705 CPU and Memory (1 of 9) ................................................................................... 6-3

Engine Board Assembly–MARA 2 (2 of 9)................................................................................................................... 6-4

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Kurzweil PC3x Service Manual

Engine Board Assembly–MARA 1 (3 of 9)................................................................................................................... 6-5

Engine Board Assembly–MARA Clocks, Delay Memory Interface (4 of 9)............................................................ 6-6

Engine Board Assembly–Sound ROM (5 of 9)............................................................................................................ 6-7

Engine Board Assembly–ROM DIMMs, SmartMedia Interface, LCD, etc. (6 of 9)............................................... 6-8

Engine Board Assembly–DAC, Main Outs (7 of 9) .................................................................................................... 6-9

Engine Board Assembly–Aux and Headphone Outs (8 of 9) ................................................................................. 6-10

Engine Board Assembly–Mictors, CPLD, Power (9 of 9) .........................................................................................6-11

Connector Board–M38869 Scanner (1 of 4)................................................................................................................ 6-12

Connector Board–MIDI, Pedals, Ribbon, LCD Contrast (2 of 4)............................................................................ 6-13

Connector Board–Power Supply, Audio (3 of 4)....................................................................................................... 6-14

Connector Board–Sample Rate Converter (4 of 4).................................................................................................... 6-15

Front Panel Board–Front Panel Misc. Buttons And LEDs (1 of 2).......................................................................... 6-16

Front Panel Board–Front Panel Bank & Program Buttons & LEDs (2 of 2) .......................................................... 6-17

Slider Board.................................................................................................................................................................... 6-18

Wheels Board–Wheels & AT........................................................................................................................................ 6-19

Engine Board–USB/xD Daughtercard....................................................................................................................... 6-20

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v

Chapter 1 Introduction

This chapter provides the service technician with a layout of the front and rear panel features, as well as a brief explanation of their functions. For in-depth descriptions of the many features the PC3x includes, consult the Getting Started Guide .

Warning : If possible, save all user programs and setups before disassembly. For instructions,

refer to the Boot Loader in Chapter 4, page 4-2 .

Notes, Cautions, Warnings

Please pay special attention to all Notes, Cautions, and Warnings used throughout this manual as they not only point out speciﬁc instructions, but also alert you to variations between manufactured units.

A brief description of these symbols follows:

Note : Provides additional information, indicates differences between models, and emphasizes

speciﬁc instructions.

Caution : Highlights areas to instruct you to proceed cautiously so that damage does not occur

to the unit or individual components.

Warning : Alerts you so that damage does not occur to yourself, others, or external equipment

and devices.

Rear Panel Features

Storage —Use this slot to insert an xD memory card to update software, back up, and share ﬁles.

USB Port —Use the USB Port to send and receive MIDI or to connect to a computer for ﬁle

transfer.

Storage

Figure 1-1 PC3x rear panel, left end

USB Port

1-1

Introduction

Rear Panel Features

MIDI Select Switch —Slide switch to select the operation of the MIDI Thru/Out port. This

switch is recessed into the rear panel so that it cannot be accidentally changed.

MIDI Ports —In, Thru/Out, and Out ports to connect the PC3x to other MIDI devices to receive,

pass, and send MIDI data.

Display —Rotary potentiometers to adjust the brightness and contrast of the LCD for the best

visibility.

MIDI Select Switch

MIDI

Ports

Display Bright,

Contrast

Sync In

Digital Out

Breath

Input

Switch Pedals

Continuous

Control Pedals

Ribbon Input

Balanced

Analog Outputs

Headphones

Power Entry

Module

Figure 1-2 PC3x rear panel, right end

Sync In —This RCA jack allows the PC3x to receive digital clock signals when it is slaved to

another device.

Digital Out —RCA jack to connect to another device with an AES or S/PDIF input via a 75 !

coaxial cable.

Switch Pedals —Three 1/4” jacks to connect switch pedals that can be assigned to control

operations such as sustain, sostenuto, etc. (use 1/4” tip/sleeve).

1-2

Continuous Control Pedals —Two 1/4” jacks to connect pedals that can be assigned to control

operations such as volume, expression, etc. (use 10K ! linear taper potentiometer, 1/4” tip/ring/sleeve, wiper to tip).

Breath Input —A 3.5mm jack to connect a standard breath controller to send standard MIDI

Breath messages.

Ribbon Input —Modular jack to connect the Kurzweil Ribbon Controller option.

Balanced Analog Outputs —Four 1/4” balanced audio output jacks. Use the Main outputs, left

(mono) and right, to connect to an ampliﬁer, mixer or sound system. Use the Aux outputs for monitoring or other operations. They duplicate the Main outputs, but are always in stereo.

Headphones —Standard 1/4” jack to connect headphones.

Power Entry Module —includes the power switch, AC receptacle, and the fuse holder/voltage

select compartment. (See Chapter 4, page 4-18 for instructions to change the voltage setting.)

PC3x Front Panel

V

y

p

Front Panel Features

Introduction

PC3x Front Panel

MASTER

OLUME

BANKS

StringsOrchestraClassic KeysBase 1 Base 2 Exp 1 UserExp 2

Rotary

16' 5 1/3' 8' 4' 2 2/3' 2' 1 3/5' 1 1/3' 1'

A B IEC G HFD

Data MIDI 1 3 MIDI 22 MI DI 23 MIDI 24

Vibrato

DepthOn/Off Chor/VibFast/Slow

Loud/Soft Decay F/S Pitch H/L

On /Off

Percussion Enable

MIDI 25 MIDI 26 MIDI 27 MIDI 28

KB3

On /Off

Figure 1-3 Master Volume, Bank buttons, Sliders

Master Volume —Slider to adjust the overall volume.

Bank buttons—Use these buttons to select different banks of programs, then select an individual

program using the Category and Program buttons. The labeling above the button indicates the program. In KB3 mode, these buttons have different functions. Their labeling is below the Bank buttons.

Sliders —The operation of the sliders depends on which mode is active. In KB3 mode, these

sliders emulate the drawbars of an organ. They are labeled as follows: above each slider for KB3 mode, and below when used for data and MIDI controllers.

MODE

MIDIProgram

Mute 1

Setup Master

Q Access Song

Solo Mute Active

Effect Storage

FX Bypass Compare

Record Pla

Mute 2

Mute 4Mute 3

/ Pause Sto

Chan / Layer

Edit

Figure 1-4 Mode, Edit, Chan/Layer and record function buttons

Mode buttons—use these buttons to select one of the eight available operating modes. The

additional labeling of these buttons indicate that they function differently depending on the current mode or editor.

1-3

Introduction

PC3x Front Panel

Chan/Layer buttons—depending on the current editor, use these buttons to scroll through

layers, presets, values, and zones.

Record , Play/Pause , and Stop buttons—use these buttons to activate the sequencer to record

and playback songs.

Edit button—use this button to enter the editor or the current mode to modify a selected object

or parameter.

ExitExit

Figure 1-5 LCD and Soft, Cursor, and Exit buttons

Display —Angled 240 x 64, backlit graphic LCD.

Soft buttons — use these buttons to select an action or item shown directly above the button in

the bottom line of the display.

Cursor buttons — use these buttons navigate the cursor in the display.

Exit button—press this button to leave the current editor.

PROGRAM

1 432

CATEGORY

E Piano 1Piano 2Piano 1 E Piano 2

8765

BrassOrganClavierPop Keys

PadsSynthsVoicesStrings

PercussionDrumsBassGuitar

Jump

Storage Active

1 2 3

4 5 6

STU YZVWX

-

/

+

Shift 0-9

Cancel Enter

GHIDEFABC

PQRMNOJKL

8 97

0 Clear

Space

PANIC

1-4

Figure 1-6 Program, Category, Alpha wheel and Alphanumeric buttons

Category and Program buttons—use these buttons to ﬁrst select a Category , then select one of

the eight

Program buttons.

PC3x Front Panel

Alpha Wheel— use the Alpha Wheel to increase or decrease a value by one or several

increments.

Plus ( + ) and Minus ( – ) buttons —these buttons operate similar to the Alpha Wheel. Pressing the Plus (+) or Minus (-) button allows you to increase or decrease a value by one. Pressing these buttons simultaneously, selects the Jump function.

Alphanumeric Keypad—use these buttons to enter characters (both uppercase and lowercase), numbers, and spaces. Pressing these buttons simultaneously, selects the Panic button. Select the Panic button to send an All Notes/All Controllers Off message on all 16 channels.

Storage Active LED—this blue LED is lit when an xD daughter card is installed and there is

activity. (Do not remove the xD card when the blue LED is lit.)

Wheels Assembly (not shown)

Pitch and Mod Wheels—use these wheels to vary modulation and pitch. In some programs, the Mod Wheel can be used for other functions.

Introduction

ARP button—use this button to active the Arpeggiator.

SW button—this button can be programmed for a variety of functions.

1-5

Introduction

PC3x Front Panel

1-6

Chapter 2 Diagnostics

Diagnostic Tests

The following lists the diagnostic tests available for the PC3x.

Note: Throughout this manual many references are made to the MARA 1 and MARA 2 ICs. For service personnel unfamiliar with the PC3x, MARA is the name given to the two Kurzweil Custom Sound ICs.

• SDRAM Refresh

• Flash Memory

• MARA Validity Check

• MARA Communications

• Exp DIMM Check

• MIDI UART

• External Card

• MARA Delay RAM

• MARA Sound ROM

• Audio Output

Warning: If possible, save all user programs and setups before entering diagnostics or performing maintenance or repair. For instructions, refer to Saving User Data in Chapter 4, page 4-2.

Entering Diagnostics

1. Apply power to the unit. When the ****Welcome to the Kurzweil PC3**** message appears in the LCD, quickly press and release the Exit button. The LCD should display the following:

PC3 Boot Loader Version X.XX

RUN UPDATE RUN SYSTEM FILE PC3 IMAGE DIAGS RESET UTILITIES

Figure 2-1 LCD example, Boot Loader

2. Press the soft button below RUN DIAGS in the LCD.

2-1

Diagnostics

Entering Diagnostics

3. The LCD ﬂashes the message: Running ROM-based diagnostics.

4. The LCD displays the following:

Running SDRAM refresh test

RAM Test Passed

OK

Figure 2-2 LCD example, diagnostic main menu

5. The bottom line in the display shows the four test modes. Press the soft button below the test mode to run the tests.

LCD and Front Panel Buttons

The LCD displays the list of tests, test modes, actions, and test results.

Press the Left, Right, Up, or Down cursor buttons or turn the Alpha Wheel to navigate through the available tests.

Use the soft buttons located below the LCD to select different test modes or actions.

Press the Exit button to return to the Boot Loader.

Test Results

At the completion of an individual test, the LCD displays the results of the test. Figure 2-3 shows an example of the display for the SDRAM refresh test.

Figure 2-3 LCD example, SDRAM refresh test

Running SDRAM refresh test

RAM Test Passed

OK

2-2

Diagnostic Test Modes

Run

The run test mode allows you to select an individual test, or to step through and run each available test. To step through the different tests, use the Left, Right, Up, or Down cursor buttons or turn the Alpha Wheel. Press the soft button below RUN to select the test.

At the completion of a test, whether pass or fail, press the OK soft button to exit the test and return to the test menu.

To exit diagnostics, press the Exit button to return to the Boot Loader.

Loop

Loop continuously runs an individual test. The number of tests performed and the result is displayed continuously in the LCD. The test continues to run until you press the Exit button.

Continuous

Continuous is the same as Loop, but stops if a failure is detected.

Diagnostics

Diagnostic Test Modes

Burn-in loop

Burn-in continuously runs the following sequence of tests.

• SDRAM Refresh

• Flash Memory

• MARA Validity Check

• MARA Delay RAM

• MARA Communications

• MARA Sound ROM

If a failure is detected, the test stops and displays the result.

To exit Run Burn-in and return to the Boot Loader, press and hold the Exit button.

2-3

Diagnostics

Description of Tests

SDRAM Refresh

This test veriﬁes the write/read functionality and accuracy of the SDRAM chip (U3) attached to the microprocessor, SH7705 (U1).

A failure of this test indicates a problem with the SDRAM chip or associated circuitry on the Engine Board.

Flash Memory

This test veriﬁes the manufacturer ID and the size of the NAND Flash installed. The test then writes and reads back one or more blocks not occupied by the ﬁle system. This test also indicates if the NAND Flash is formatted or unformatted.

A failure of this test may indicate a problem with the with the microprocessor (U1), NAND Flash (U2), Fin CPLD (U45), or related circuitry on the Engine Board.

MARA Validity Check

Note: Throughout this manual many references are made to the MARA 1 and MARA 2 ICs. For service personnel unfamiliar with the PC3x, MARA is the name given to the two Kurzweil Custom Sound ICs.

This tests veriﬁes the proper content of certain read-only registers and the read/write accuracy of certain read/write registers on both MARAs. It also writes and reads back the various register blocks in both MARAs that are implemented as RAM cells.

A failure of this test may indicate a problem with the with the microprocessor (U1), MARA 1 (U11) or MARA 2 (U10), or related circuitry on the Engine Board.

MARA Communications

This test transfers data from one MARA to the other via the SMOOCH interface and checks the accuracy of the data received. All four SMOOCH inputs and outputs are exercised.

This test will likely fail if the MARA Validity Test fails. However if the MARA Validity Test passes and this test fails, it may indicate a bad solder joint underneath one or both MARAs.

2-4

Expansion DIMM Check

This test checks to see if a DIMM module is installed in J10 or J11 and conﬁrms the type.

Running Exp DIMM check test

CHECK READ WRITE PLAY DIMMS DIMMS DIMMS DIMMS EXIT

Figure 2-4 LCD example, Exp DIMM check test

Note: There are two types of DIMM modules—one with all four NOR Flash chips present and the other with only two out of the four chips populated. The J10 DIMM socket on the Engine Board can only support the half-populated DIMM version.

Each DIMM module has an upper and lower bank. The half-populated DIMM module has Flash chips installed in the upper bank only. Therefore, this diagnostic will only report results for DIMM 0, High Bank; but will report results for both the High and Low Bank of DIMM 1.

Diagnostics

Description of Tests

A failure of this test may indicate a problem with the DIMM(s), their installation, soldering of the socket(s), or related circuitry on the Engine Board.

MIDI UART

The MIDI test performs a loop-back of the serial port by sending a 23-byte pattern over the external MIDI link. This test requires a MIDI loop (a MIDI cable that connects two MIDI jacks). The test will fail if a MIDI cable is not connected between two MIDI jacks. Be sure to run this test with MIDI cables connected as follows:

1. Connect a MIDI cable to the MIDI In and MIDI Out jacks and run the test.

2. Connect a MIDI cable to the MIDI In and MIDI Out/Thru jacks and set the MIDI select

A failure of this test could be caused by failure of the serial port, other MIDI circuitry, or a problem on the Engine Board.

On the Engine Board check the signal paths from U1, pins 172, 174, 177, and 179 to connector J5.

switch on the rear panel to Out. Run the test.

2-5

Diagnostics

Description of Tests

External Card

This test checks the hardware interface for the xD Card. The test ﬁrst checks to see if a card is installed; and if so, reads and reports the identifying data.

Note: This test is safe to run on an xD Card that has data on it.

A failure of this test indicates a problem with USB/xD Daughtercard, related circuitry or the Engine Board.

MARA Delay RAM

This is a write/read test to check the Delay RAM connected to MARA 1. The Delay RAM test ﬁrst checks address and databus connectivity and then reports which bits are not functioning to aid troubleshooting.

Error reporting for this test identiﬁes whether the error is likely to have occurred during writing or during reading. Data value mismatch errors are reported in hexadecimal values starting with “0x” followed by 8 hex digits. If the data value that was ReadBack differs greatly from the value Wrote, it could mean there was an address bit error, or one or more of the control signals are bad.

A failure of this test would indicate a problem with the DDR SDRAM (U13), MARA 1 (U11), or the Engine Board.

MARA Sound ROM

This test calculates and veriﬁes the checksum for each 16 MB section of the on-board Sound (Sample) ROM. It also tests the data and address lines from both MARAs to the Sound ROMs. This test may also report errors when the MARA Validity Test fails. If MARA Validity Test only fails on one of the MARAs, then the other MARA may still pass this test.

Running MARA sound ROM test

MARA 1 Sound ROM checksums are correct MARA 1 Sound ROM data lines are correct MARA 1 Sound ROM addr lines are correct MARA 2 Sound ROM checksums are correct MARA 2 Sound ROM data lines are correct OK

Figure 2-5 LCD example, MARA Sound ROM test

A failure of this test may indicate a problem with a Sound ROMs (U20, U21, U22, or U23), or the Engine Board.

Use the Down cursor button or the Alpha wheel to scroll down to the next line of the test result.

2-6

Audio Output

This is not a test that fails. It is an interactive test for the entire audio chain. However for this test to pass reliably, the MARA Validity and MARA Delay RAM tests should pass. The software creates waveforms (sine and sawtooth) and stores them in the Delay RAM. Therefore, MARA 1 and its Delay RAM need to be functioning for this test to produce a clean audio waveform.

When you select this test, the LCD displays the following:

Figure 2-6 LCD example, Audio output test

Note: If the diagnostic version is earlier than 0.20, this test is only useful to check the polarity of the Main Output audio signals. Use the Sine Wave Test on page 2-8 for audio level and distortion tests. If the diagnostic version is 0.20 or later, follow the on-screen instructions for use.

Diagnostics

Description of Tests

Running Audio output test

Frequency = 220 Hz Output = Main outputs

PLAY PLAY SAMPLE SINE SAWTOOTH LOOP EXIT

Warning: This test produces loud sine waves. Before beginning this test, turn the volume slider on the PC3x and your sound system down to minimum.

Diagnostic Version 0.20 or earlier

To use diagnostic Version 0.19 or earlier to check amplitude, polarity, and frequency response ﬂatness; an oscilloscope is needed.

1. Move the Volume slider to maximum, then press the Play Sawtooth soft button.

2. A 275 Hz sawthooth with a peak amplitude of +/-0.30V will appear on the Main Left and Main Right Outputs.

If the polarity is correct, the sawtooth ramp will be positive-going at the Tip contact of each jack and negative-going at the Ring contact.

If the frequency response is ﬂat, the ramp will be perfectly straight except for three tiny ripples just before and after the ﬂyback part of the signal.

The volume slider does not act normally during the test so leave it set to maximum. Only the Main outputs will be driven. When ﬁnished checking the Main Output signals, press the Exit soft button to exit the diagnostic.

The Play Sine soft button will produce a sine wave, also 0.30V peak amplitude, but it is not pure and thus unsuitable for distortion measurements. Use the Sine Wave Test that follows.

Do not press the Sample Loop soft button. It will hang and require a power cycle to recover.

2-7

Diagnostics

Description of Tests

Sine Wave Test

For a pure sine wave that exercises the full dynamic range of the PC3x, press the Run PC3 soft button to exit diagnostics and return to normal operation. In Program mode, use the numeric keypad and select program 1000, Sine Wave.

Warning: This test can produce a very high level (20-30dB higher than normal which can be damaging), and must be activated in order to play. Follow Steps 1–5 to activate and run the test.

1. Position the volume slider and sliders 1-9 to minimum.

2. Use the numeric keypad and select program 1000, Sine Wave.

3. Press the SW1 button located directly above the Mod Wheel.

4. Play C4 (Middle C) to produce a 261 Hz sine wave at all of the outputs.

5. Move the volume slider up slowly.

Note: Do not touch Slider 1 or the amplitude may change.

\

FREQUENCY

NOTE Hz Vrms Vp-p dBm

D2 F#2 C3 F#3 C4 F#4 C5 F#5 C6 F#6 C7 D7

20.6

32.7

65.4

130.8

261.6

523.2

1046.5

2092.8

4186.0

8371.2

16744.0

21096.1

3.08

3.21

2.80

2.77

2.80

2.81

3.00

2.77

Table 2-1 Frequency and Amplitude Values

AMPLITUDE

(Tip or Ring to Sleeve)

4.35

4.54

3.95

3.92

3.95

3.97

4.24

3.92

+12.0 +12.3 +11.2 +11.2 +11.2 +11.2 +11.1 +11.2 +11.2 +11.2 +11.8 +11.1

2-8

Diagnostics

Description of Tests

Notes

1. Slider 1 is a ﬁne amplitude adjustment. It has a range from 63% of the values listed in Table 2-1 to beyond clipping.

2. Clipping level is speciﬁed to be 4.25 Vrms, 6.00Vp-p, +14.8 dBm unbalanced, +20.8 dBm balanced at the Main and Aux Outputs.

3. The Headphones Output level is twice that of the Line Outputs. Clipping is approximately 7.0 Vrms or 20.0Vp-p.

4. The keys are not velocity sensitive.

5. Keys not in the table produce other frequencies from a minimum of 6.49 Hz (E1) to a maximum of 21096 Hz (D7).

6. The frequency ratio from one key to the next is 1.122462.

2-9

Diagnostics

Description of Tests

2-10

Chapter 3 Disassembly/Assembly

Introduction

This chapter contains all the procedures for the disassembly and reassembly of the PC3x. There are three main sections: Opening the PC3x, Top Enclosure, and the PC3x Keyboard Assembly.

Warning: If possible, save all user programs and setups before disassembly. For instructions, refer to Boot Loader in Chapter 4, page 4-2.

Notes, Cautions, Warnings

Please pay special attention to all Notes, Cautions, and Warnings as they not only point out speciﬁc instructions, but also alert you to variations between manufactured units.

Cables, Connectors

Cables

All cables with connectors are keyed, and therefore cannot be reversed.

Warning: Some units may have a small PC board installed on the ﬂat ribbon cable connected to J202 on the Front Panel Board. Neither the socket nor the pins on this board are keyed. See page 3-14 and page 3-16 for further information.

Cable Routing

In some cases, tape fastens cables to printed circuit boards or the top and bottom enclosures. When disconnecting cables, always peel back the tape from one side so that the tape remains properly positioned.

Required Tools and Materials

• No. 1 Phillips head screwdriver

• No. 2 Phillips head screwdriver

• Small ﬂat screwdriver

• Dowel (3mm diameter)

• Needle-nose pliers

• Small blunt-end tool (Q-Tip, toothpick, etc.)

• USB cable

• xD Card

• Foam blocks

3-1

Disassembly/Assembly

Opening the PC3x

PC3x Bottom

Refer to Figure 3-1. Arrows indicate the locations of the enclosure support wall, endcap and rear panel screws.

Keyboard

Endcap screws

Enclosure support wall screws

Access panel

*

Rear panel screws

Rear panel

*Endcap locking bracket screws

Endcap screws

*

Figure 3-1 PC3x bottom enclosure

Caution: Do not remove the endcap or rear panel screws at this point of the procedure.

1. Tilt the PC3x up and remove the four enclosure support wall screws.

2. Place the unit ﬂat on your work surface.

3. Move the unit so that the rear panel portion of the unit hangs over the edge of your work surface. This gives you access to the eight screws that secure the rear panel portion of the top enclosure to the bottom enclosure. Remove the eight screws.

Note: Two of these screws also secure the rear panel portion of the access panel. It is not necessary to remove the ﬁve remaining access panel screws.

3-2

4. Slide the unit back onto the work surface.

Removing the Top Enclosure

The following procedure assumes that you have completed Steps 1–4 in PC3x Bottom.

Removing the top enclosure requires removing the left and right endcaps. Each endcap includes the endcap, endcap side bracket and endcap locking bracket.

Endcap

Endcap Side Bracket

Endcap Locking Bracket

Figure 3-2 Endcap assembly

Disassembly/Assembly

Opening the PC3x

1. Refer to Figure 3-3.

2. Remove the four screws that secure the endcaps to the rear panel.

Endcap screws

Figure 3-3 PC3x rear panel

3. Refer to Figure 3-1. Move the unit so that one end hangs over the edge of your work surface.

4. Remove the endcap locking bracket screw from the bottom enclosure.

Caution: When you remove the endcap locking bracket screw, the endcap locking bracket may remain loosely in the endcap. However, it can come out of the endcap. When you remove the screw securing the endcap locking bracket, hold it in position so that it does not fall out of the endcap and become lost or damaged.

5. Remove the remaining three screws and set the endcap safely aside.

6. Repeat for the other endcap.

3-3

Disassembly/Assembly

Opening the PC3x

7. Refer to Figure 3-4. The bottom edge of the rear panel and back edge of the bottom enclosure connect to form a lip. The rear panel screws secure the lip.

Transformer

Rear panel screw locations

Enclosure Support Wall

Lip

Figure 3-4 Top and bottom enclosures

Warning: Be sure to have your work surface prepared. This includes placing foam blocks behind the unit. When the top enclosure is removed, place it on the foam blocks to avoid damaging the Alpha Wheel, control panel buttons, and sliders. The following procedure requires enough room behind the rear of the unit to place the top enclosure face down on your work surface.

8. Grip each end of the top enclosure and rotate it back approximately two inches. This separates the bottom edges of the top enclosure and bottom enclosure.

9. Lift the top enclosure straight up.

10. Turn the top enclosure over and place it face down onto your work surface.

Caution: Table 3-1 lists the cables, by board location, from the top enclosure to the assembly they connect to on the bottom enclosure. You do not need to disconnect these cables.

3-4

Top cover Assembly Bottom Enclosure

Connector Board, Bass Keyboard Assembly, Bass

Connector Board, Treble Keyboard Assembly, Treble

Slider Board Button Board/Wheels Assembly

Connector Board Wheels Assembly

Table 3-1 Top and bottom enclosure cables

Replacing the Top Enclosure

1. Position the top enclosure behind the bottom enclosure.

2. Move the top enclosure so that the bottom edge of the rear panel is positioned under the bottom enclosure edge. See Figure 3-4 on page 3-4.

Note: Verify that the cables listed in Table 3-1 are lying ﬂat on the bottom enclosure. Be sure that all other cables are tucked between the top enclosure and the enclosure support wall.

Disassembly/Assembly

Opening the PC3x

3. Hold the top enclosure safely in place and move the unit so that one end of the rear panel edge hangs over the edge of your work surface and install the rear panel screw at that end. Slide the unit back onto your work surface. Repeat for other end.

Warning: Perform Steps 3 and 4 separately. Combining these steps could cause the top enclosure to ﬂip away from the bottom enclosure or drop off of your work surface.

4. Move the unit so that the rear panel edge of the unit hangs over the edge of your work surface and install the remaining screws.

3-5

Disassembly/Assembly

s

Opening the PC3x

Closing the PC3x

Warning: The following procedure assumes that you have completed Steps 3 and 4 in Replacing the Top Enclosure. If you have not completed these steps, do so before continuing.

1. Refer to Figure 3-1. Tilt the unit up and install the four enclosure support wall screws.

Note: In addition to the rear panel screws, the endcap locking bracket secures the endcap to the top enclosure. When the endcap locking bracket is in position, it rests against the endcap clamping bracket located on the underside of the top enclosure. See Figure 3-5.

Endcap Clamping Bracket

Endcap Locking Bracket

Endcap Screw

Figure 3-5 Top enclosure, endcap locking and clamping brackets

2. Slide one side of the unit off of your work surface and hold the appropriate endcap and endcap locking bracket in position.

3. Install the endcap locking bracket screw in the bottom enclosure.

4. Install the three remaining endcap screws in the bottom enclosure.

5. Repeat for the other endcap.

6. Refer to Figure 3-3. Install the four endcap screws in the rear panel.

3-6

Top Enclosure

The top enclosure includes six boards: Connector, Front Panel, LCD, Slider, Engine, and USB/xD Daughtercard. The enclosure support wall, transformer and AC recptacle are also included on the top enclosure. Figure 3-6 shows the placement of the enclosure support wall on the top enclosure. Figure 3-7 shows the placement of the boards, transformer, and AC recptacle with the enclosure support wall removed.

Disassembly/Assembly

Top Enclosure

USB

Engine Board

Figure 3-6 Top enclosure, enclosure support wall location

Enclosure Support Wall

Front Panel

LCD

Connector Board

Slider Board

Transformer

Figure 3-7 Top enclosure, board locations, transformer, and AC recptacle

3-7

Disassembly/Assembly

Top Enclosure

Removing the Enclosure Support Wall

The shielded cable bundle connecting J302 on the Connector Board to J18 on the Engine Board is routed and taped along the front of the enclosure support wall. Tape also secures the cable bundle to the Slider and Front Panel Boards. Always peel back the tape from one side so that the tape remains properly positioned.

Note: The routing of this cable is important to minimize noise and hum. Be sure to note the placement of the cable so that you position it properly when you reinstall the enclosure support wall.

1. Peel back the tape from one side to free the cable bundle from the enclosure support wall and the Slider Board.

2. Disconnect the cable bundle from J302 on the Connector Board and move the cable bundle away from the enclosure support wall.

3. Remove the seven screws that secure the enclosure support wall to the top enclosure, and remove the enclosure support wall.

Replacing the Enclosure Support Wall

1. Align the center screw holes of the three-hole groupings in the enclosure support wall with the thread marks in the extrusion.

2. Install the seven screws that secure the enclosure support wall to the top enclosure.

3. Secure the cable bundle to the front of the enclosure support wall with the tape.

4. Connect the shielded cable bundle to J302 on the Connector Board and secure it to the Slider Board with the tape.

Note: The routing of this cable is important to minimize noise and hum. Be sure to note the placement of the cable so that you position it properly when you reinstall the enclosure support wall.

3-8

Removing the Connector Board

1. Follow the procedure described on page 3-8 to remove the enclosure support wall.

2. Following Steps 3–5, disconnect the cables listed in Table 3-2.

Ref. Name Cable Type Destination

J301 PC3 Power stranded wire Engine Board

J303 MIDI/CPU stranded wire Engine Board

J304 Front Panel ﬂat ribbon Front Panel Board

J305 Slider stranded wire Slider Board

J306 Treble ﬂat ribbon Keyboard Assembly

J307 Bass ﬂat ribbon Keyboard Assembly

J308 Wheels stranded wire Wheels Assembly

J324 AC power stranded wire Transformer

J325 Digital Audio Out stranded wire Engine Board

Table 3-2 Connector Board cables

Disassembly/Assembly

Top Enclosure

3. Disconnect the stranded wire cables from J301, J303, and J325 on the Connector Board.

Note: The cables used throughout the PC3x are bundled and routed so that their locations and destinations seem obvious. However, to avoid reversing the Bass and Treble cables when reconnecting, mark one or both cables designating B for Bass and T for Treble.

4. Disconnect the ﬂat ribbon cables from J304, J306, and J307.

Connector Board

AC Power

J301

PC3 Power

Figure 3-8 Cable locations

5. Disconnect the stranded wire cables from J305, J308, and J324.

Dig.

Audio Out

MIDI & CPU

J303 J305

Slider Wheels

J308J325J324

Treble

J306

Bass Front Panel

J307

J304

Audio Out

J302

3-9

Disassembly/Assembly

Top Enclosure

*

longer screws with spacers

Figure 3-9 Rear panel hardware locations

6. Remove the eight screws that secure the Connector Board to the rear panel. Two screws are longer than the others and have spacers located between the screw and the rear panel. See Figure 3-9 for the locations of the screws and spacers.

Note: Do not remove any other hardware from this portion of the rear panel.

7. Remove the Connector Board.

Replacing the Connector Board

Refer to Figure 3-10. The Connector Board is designed to work with a number of different keyboards. This is determined by the position of a diode(s) on the Connector Board. There are four diode locations, D19 through D22, located between J306 and J307 on the Connector Board. If you are replacing the Connector Board with a new one, determine the location of the diode(s) and be sure the new board matches the board you are removing.

3-10

Treble

J306

D19

OPT 1

D21

OPT 2

D20OPT 3

D22

OPT 4

Bass

J307

Figure 3-10 Connector Board, diode conﬁguration

1. Hold the Connector Board and position it so that the rear panel jacks, potentiometers, and switches are correctly positioned through the rear panel portion of the top enclosure.

2. Install the eight screws that secure the Connector Board to the rear panel. Be sure to place a spacer and use one of the longer screws at the locations noted in Figure 3-9.

Disassembly/Assembly

Top Enclosure

3. Connect the stranded wire cable from the Slider Board to J305 on the Connector Board.

4. Connect the stranded wire cable from the Transformer to J324 on the Connector Board.

5. Connect the stranded wire cable from the Wheels Assembly to J308.

6. Connect the ﬂat ribbon cables from the Keyboard Assembly to J306 and J307 on the Connector Board.

7. Connect the ﬂat ribbon cable from the Front Panel Board to J304 on the Connector Board.

Warning: If you are replacing the Connector Board with a new board, check the ﬂat ribbon cable at location J202 on the Front Panel Board. Some earlier units have a small PC board attached to the ﬂat ribbon cable. If the unit has this small PC Board, check the value of RN10 and RN12 on the new Connector Board. If a 6.8K resistor network is installed in RN10 and RN12, disconnect the ﬂat ribbon cable from J202, remove the small PC Board, and reconnect the cable directly to the Front Panel Board.

8. Connect the stranded wire cables from the Engine Board to J301, J303, and J325 on the Connector Board.

9. Follow the procedure on page 3-8 to install the enclosure support wall.

Removing the Slider Board

1. Follow the procedure described on page 3-8 to remove the enclosure support wall.

2. Follow the procedure described on page 3-9 to remove the Connector Board.

3. Tilt the top enclosure up and remove the ten slider knobs, then lay it ﬂat on your work surface.

4. Following Steps 5 and 6, disconnect the cables listed in Table 3-3.

Ref. Name Cable Type Destination

J303 Slider Bridge ﬂat ribbon Front Panel Board

J304 IBBB stranded wire Button Board/Wheels Assembly

Table 3-3 Slider Board cables

5. Disconnect the ﬂat ribbon cable from J303.

6. Disconnect the shielded wire cable from J304.

Note: The stranded wire cable connected to location J302 was disconnected following the procedure to remove the Connector Board. It is not necessary to disconnect it from the Slider Board. However, if you are replacing the Slider Board with a replacement board, be sure to disconnect the cable and connect it to the replacement board.

7. Remove the four screws that secure the front panel edge of the Slider Board.

3-11

Disassembly/Assembly

Top Enclosure

8. Remove the four screws that secure the two PC board clamps (two screws per clamp).

9. Remove the Slider Board.

1

J303 FP Bridge

Slider

Board

Figure 3-11 Slider Board, screw locations

These screws also secure the rear panel edge of the Board.

J304

J302

Caution: Each switch button cap uses a set of small pegs to mount the cap to a board. The button caps on the Slider Board are mounted individually. If a cap becomes separated from the board, be careful that a peg is not inadvertently broken.

Replacing the Slider Board

1. Position the Slider Board onto the top enclosure.

2. Raise the top enclosure up to verify that the switch button caps and slider shafts are correctly positioned through their openings in the top enclosure.

3. Align the center screw hole on the front panel edge with the thread marks in the extrusion and install the four screws that secure the front panel edge.

4. Place a PC board clamp in position. Align the center screw holes of the clamp with the thread marks in the extrusion and install the two screws that secure the clamp. Repeat for the other clamp.

5. Tilt the top enclosure up and install the ten slider knobs, then lay it ﬂat on your work surface.

Caution: To avoid damaging a slider, move the slider shaft to either the top or bottom end of its travel to install a knob.

6. Connect the stranded wire cable from the Button Board on the Wheels Assembly to J304 on the Slider Board.

3-12

7. Connect the ﬂat ribbon cable from the Front Panel Board to J303 on the Slider Board.

8. If you have disconnected the cable from J302, reconnect it.

9. Follow the procedure on page 3-10 to install the Connector Board.

10. Follow the procedure on page 3-8 to install the enclosure support wall.

Removing the LCD Board

1. Follow the procedure described on page 3-8 to remove the enclosure support wall.

2. Follow the procedure described on page 3-9 to remove the Connector Board.

3. Disconnect the ﬂat ribbon cable from J15 on the Engine Board. This cable is bundled with other cables routed along the rear panel portion of the top enclosure. They are secured with tie wraps to cable mounts. Removing the LCD requires cutting the tie wraps and separating the ﬂat ribbon cable from the other cables routed along the rear panel.

4. The LCD is mounted onto a bezel that is secured to the Front Panel Board. Remove the four screws that secure the LCD to the front panel bezel.

Disassembly/Assembly

Top Enclosure

LCD

J203-2 RETURN BLACK

J203-1 HOT BLUE

Figure 3-12 J203-1 and J203-2 connections on Front Panel Board

5. Refer to Figure 5. A two-wire soldered cable connects the LCD to J203-1 and J203-2 on the Front Panel Board. These cables are not labeled at the Factory and the colors of the wires attached to the LCD may vary. Polarity is important! Before you desolder the wires, mark one of them with a designation such as a black line to avoid reversing the wires when they are resoldered.

Caution: 1000V high frequency voltage present, which can cause burns–be sure power is off!

6. Desolder the wire connections at J203-1 and J203-2 on the Front Panel Board. Lift the LCD Board up and remove it.

3-13

Disassembly/Assembly

Top Enclosure

Replacing the LCD Board

1. Place the LCD Board in position face down onto the front panel bezel.

2. Install the four screws that secure it to the front panel bezel.

3. Connect the ﬂat ribbon cable to J15 on the Engine Board. Be sure that you bundle the LCD cable with the other cables positioned along the rear panel and tie wrap them to the cable mounts.

Caution: 1000V high frequency voltage present, which can cause burns–be sure power is off!

Note: If you are replacing the LCD with a new one and the wire colors are different from the

original, try to match the wires based on how each wire enters the LCD module.

4. Solder the connections at J203-1 and J203-2 on the Front Panel Board. Polarity is important! If the LCD displays low light, the wires are reversed.

Removing the Front Panel Board

1. Follow the procedure described on page 3-8 to remove the enclosure support wall.

2. Follow the procedure described on page 3-9 to remove the Connector Board.

3. Table 3-4 lists the cables connected to the Front Panel Board.

Note: If the service you are performing only requires that you have access to the Front Panel Board for component testing or component replacement, it is not necessary to separate the LCD Board from Front Panel Board.

Ref. Name Cable Type Destination

J201 FP Bridge ﬂat ribbon Slider Board

J202 Front Panel ﬂat ribbon Connector Board

J203 Backlight two-wire cable LCD

Table 3-4 Front Panel Board cables

Note: The ﬂat ribbon cable at location J202 was disconnected following the procedure to remove the Connector Board. It is not necessary to disconnect it from the Front Panel Board. However, if you are replacing the Front Panel Board with a replacement board, be sure to disconnect the cable and connect it to the replacement board.

Warning: If the ﬂat ribbon cable at location J202 has a small PC board connecting it to the Front Panel Board, you should disconnect it from the Front Panel Board so that it is not damaged during component testing or replacement. If connector is offset by one pin either way, the Front Panel Board will be damaged!

3-14

4. Disconnect the ﬂat ribbon cable at J201 on the Front Panel Board.

Disassembly/Assembly

Top Enclosure

Note: If the service you are performing only requires that you have access to the Front Panel Board for component testing or component replacement, it is not necessary to separate the LCD Board from Front Panel Board.

5. If you are replacing the Front Panel Board with another board, follow the procedure described on page 3-13 to remove the LCD Board.

Note: If you are replacing the Front Panel Board with another board, be sure to remove the four screws that secure the LCD bezel to the board and install it on the new board.

6. Seven of the screws that secure the enclosure support wall also secure the front panel edge of the Front Panel Board. You have already removed the enclosure support wall, but one screw remains securing this edge of the board. See Figure 3-13, and remove the remaining screw.

7. Remove the six screws that secure the three PC board clamps (two screws per clamp). These screws also secure the rear panel edge of the Front Panel Board.

8. Lift the Front Panel Board up from the top enclosure. The spinknob and switch button caps should remain in place.

Caution: Each switch button cap uses a set of small pegs to mount the cap to the Front Panel Board. The button caps are mounted individually or in clusters. If a cap becomes separated from the board, be careful that a peg is not inadvertently broken.

1

J202

Front Panel

LCD

FP Bridge

1

J201

Board

J203-2 RETURN BLACK

J203-1 HOT BLUE

Enclosure Support Wall screw locations

remaining screw

Figure 3-13 Front Panel Board, screw locations

3-15

Disassembly/Assembly

Top Enclosure

Replacing the Front Panel Board

Note: If you are replacing the Front Panel Board with another board, be sure to remove the four screws that secure the LCD bezel to the board and install it on the new board.

1. Position the Front Panel Board onto the top enclosure, then raise the top enclosure up slightly to verify that the spinknob and switch button caps are correctly positioned through their openings in the top enclosure.

2. Place a PC board clamp in position. Align the center screw holes of the clamp with the thread marks in the extrusion and install the two screws that secure the clamp. Repeat for the other two clamps.

3. Install the screw that secures the front panel edge. See Figure 3-13.

4. If you removed the LCD Board, follow the procedure described on page 3-14 to replace it.

5. Connect the ﬂat ribbon cable from the Slider Board to J201.

6. If you have disconnected the cable from J202, reconnect it.

Warning: If this cable has a small PC board, be very careful to plug the small PC board onto all of the pins of J202. If it is offset by one pin either way, the Front Panel Board will be damaged!

7. Follow the procedure on page 3-10 to install the Connector Board.

8. Follow the procedure on page 3-8 to install the enclosure support wall.

3-16

Removing the Engine Board

The USB/xD Daughtercard is mounted on the Engine Board. The following procedure describes removing the Engine Board with the USB/xD Daughtercard attached.

1. Following Steps 2–4, disconnect the cables listed in Table 3-5.

Ref. Name Cable Type Destination

J5 MIDI & CPU stranded wire Connector Board

J15 Graphic LCD ﬂat ribbon LCD Board

J18 PC3 Audio Out shielded wire Connector Board

J21 PC3 Power stranded wire Connector Board

J33 Digital Audio Out stranded wire Connector Board

Table 3-5 Engine Board cables

2. Disconnect the shielded wire cable from J18.

3. Disconnect the stranded wire cables from J5, J21, and J33.

Disassembly/Assembly

Top Enclosure

4. Disconnect the ﬂat ribbon cable from J15.

5. Remove the two screws that secure the USB/xD Daughtercard to the rear panel.

6. Remove the three screws that secure the front panel edge of the Engine Board.

J12

USB/SM

Card

on Engine

Board

USB/xD

Daughter Card

J1

Dig. Audio Out

J20

J18 Audio Out

Battery

J5

Bank 1

Bank 0

J33

Graphic LCD

MIDI & CPU

J15

J10

J21

PC3 Power

Expansion Sound ROMJ11

Expansion Sound ROM

Engine Board

Figure 3-14 Engine Board, screw locations

7. Remove the two screws that secure the PC board clamp and rear panel edge of the Engine Board to the top enclosure.

8. Remove the Engine Board.

3-17

Disassembly/Assembly

Top Enclosure

Replacing the Engine Board

1. Place the Engine Board in position on the top enclosure.

Note: Be sure the blue xD Daughtercard bezel is seated in the rear panel cutout properly.

2. Align the center screw hole on the front panel edge with the thread marks in the extrusion and install the three screws that secure the front panel edge. See Figure 3-14.

3. Install the two screws that secure the USB/xD Daughtercard to the rear panel.

4. Connect the ﬂat ribbon cable from the LCD to J15 on the Engine Board.

5. Connect the stranded wire cables from the Connector Board to J5, J21, and J33 on the Engine Board.

6. Connect the shielded wire cable from the Connector Board to J18 on the Engine Board.

Removing the USB/xD Daughtercard

The USB/xD Daughtercard is mounted on the Engine Board and is held in place with a 28-pin connector.

1. Follow the procedure described on page 3-17 to remove the Engine Board.

2. Lift the USB/xD Daughtercard straight up to disconnect it from J12 on the Engine Board.

Replacing the USB/xD Daughtercard

1. Position the USB/xD Daughtercard over the 28-pin connector at J12 on the Engine Board.

2. Verify that the Engine Board pins are lined up properly with the 28-pin connector on the USB/xD Daughtercard. Press the USB/xD Daughtercard down to insert the pins into the 28-pin connector.

3. Follow the procedure described on page 3-18 to install the Engine Board.

3-18

Removing the Wheels Assembly

1. Refer to Figure 3-15 on page 3-20. Slide the left side of the unit forward off of your work surface so that you can access the four screws and washers securing the assembly to the bottom enclosure. Remove the four screws and washers.

2. Slide the unit back onto your work surface.

3. Lift the Wheels Assembly up, approximately two inches. Nylon reinforced tape secures the Aftertouch ﬂex cables to the bottom enclosure. Peel back the tape from one side and disconnect the cables, J202 to the keyboard front pressure (white key) and J203 to the keyboard back pressure (black key).

4. Disconnect the stranded wire cable from J201 on the Wheels Board.

5. Disconnect the stranded wire cable from J304 on the Slider Board.

6. Remove the Wheels Assembly.

Replacing the Wheels Assembly

1. Hold the Wheels Assembly in position over the bottom enclosure.

2. Connect the stranded wire cable from the IBBB Board to J304 on the Slider Board.

Disassembly/Assembly

Top Enclosure

3. Connect the stranded wire cable from the Connector Board to J201 on the Wheels Board.

4. Connect the ﬂat ﬂex cables, J202 from the keyboard front pressure (white key) and J203 from the keyboard back pressure (black key).

5. Reapply the nylon reinforced tape to the ﬂat ﬂex cables.

6. Lower the Wheels Assembly into position.

7. Slide the unit forward and install the four screws and washers to secure the Wheels Assembly to the bottom enclosure.

3-19

Disassembly/Assembly

PC3x Keyboard Assembly

Removing the PC3x Keyboard Assembly

The following procedure assumes that the PC3x is open and that you have followed the instructions to remove the top enclosure.

1. The keyboard is secured to the bottom enclosure using twelve screws. Refer to Figure 3-15 for the position of the screws. Arrows identify the locations of the twelve screws.

2. Tilt the PC3x up and remove the six keyboard rear screws, then lay the PC3x ﬂat on your work surface.

3. Move the PC3x forward so that the front hangs over the edge of your work surface to access the remaining screws, and remove the six keyboard front screws.

4. Slide the PC3x back onto your work surface.

5. Slide the left side of the unit forward off of your work surface so that you can access the four screws and washers securing the Wheels Assembly to the bottom enclosure. Remove the four screws and washers.

Keyboard

Wheels Assembly screws

6. Slide the PC3x back onto your work surface.

7. At this point the keyboard is loose in the bottom enclosure, but it has cables connected to

8. Lift the Wheels Assembly and disconnect the Aftertouch ﬂex cables. These cables have

9. Place the Wheels Assembly in its position on the bottom enclosure.

Keyboard front screws

Keyboard rear screws

Access panel

Rear panel

Figure 3-15 PC3x keyboard bottom

the Wheels Assembly and the Connector Board.

nylon reinforced tape securing them to the bottom enclosure. Peel back the tape from one side to free the cables.

3-20

10. Disconnect the ﬂat ribbon cables from locations J306 and J307 on the Connector Board. These cables are also secured to the bottom enclosure with nylon reinforced tape. Peel back the tape from one side to free the cables.

Note: If you need access to the keyboard to replace one or more keys, it is not necessary to entirely remove the Keyboard Assembly from the PC3x. Follow the procedure on page 3-22.

11. Remove the Keyboard Assembly.

Replacing the PC3x Keyboard Assembly

1. Place the keyboard on the bottom enclosure. Be sure that the ﬂat ribbon cables from the keyboard are correctly positioned to connect them to the Connector Board.

Note: If you have disconnected the Bass and Treble ends of the ﬂat ribbon cables from the keyboard contact boards during service, be sure that you have reconnected them and secured them with tape. Be sure that the small ribbon cable connecting the Bass and Treble Contact Boards is connected.

2. Connect the ﬂat ribbon cables to J306 and J307 on the Connector Board.

3. Secure the ﬂat ribbon cables to the bottom enclosure. Be sure to reapply the nylon reinforced tape that secures the cables to the bottom enclosure.

Disassembly/Assembly

PC3x Keyboard Assembly

4. Lift the Wheels Assembly and connect the Aftertouch ﬂex cables. Be sure to reapply the nylon reinforced tape that secures the ﬂex cables to the bottom enclosure.

5. Slide the left side of the unit forward and install the four screws and washers to secure the Wheels Assembly to the bottom enclosure.

6. Move the PC3x back onto your work surface.

7. Slide the PC3x forward so that you can install the six keyboard front screws.

8. Move the PC3x back onto your work surface.

9. Tilt the PC3x up and install the six keyboard rear screws.

3-21

Disassembly/Assembly

PC3x Keyboard Assembly

Removing Keys

The following procedure assumes you have removed the top enclosure from the PC3x.

1. Follow the procedure to remove the keyboard.

Note: If you are merely replacing one or more keys, it is not necessary to entirely remove the keyboard from the PC3x. Once you have followed the procedure to remove the keyboard, you can slide it toward the rear panel to give you enough access to remove and replace keys.

2. The following diagrams illustrate the outlines of the natural and sharp keys and the

Natural/White Key

Pivot location

location and functions of the components described in the following procedures.

Key Spring

location

Strikes the front and rear key contact on key depression

Figure 3-16 Natural/white key

Pivot location

Key Spring

location

Strikes the front and rear key contact on key depression

Figure 3-17 Sharp/black key

Hooks under the front of the keyboard chassis

Hooks through the keyboard chassis

3-22

Removing Natural/White Keys

1. Unlock the key from the pivot anchoring the key to the keyboard chassis. To do this, insert a small ﬂat screwdriver at the back end of the pivot and press toward the front edge of the keyboard. While doing so, lift the back end of the key.

2. Remove the screwdriver.

3. The key should now be free of the pivot. Lift the key up slightly, then forward. The front edge of each key hooks under the keyboard chassis. Be sure the key is not hooked under the keyboard chassis prior to lifting the key off.

Caution: Each key has a small key spring. The key spring is positioned on the keyboard chassis (just in front of the pivot) and is held in place when the key is installed. When you remove a key, be sure you do not misplace the key spring.

Removing Sharp/Black Keys

1. To remove a sharp key, ﬁrst remove the adjacent natural keys, as described in the previous procedure.

2. Unlock the key from the pivot anchoring the key to the keyboard chassis. To do this, insert a small ﬂat screwdriver at the bottom of the pivot and press toward the front edge of the keyboard. While doing so, lift the back end of the key.

Disassembly/Assembly

PC3x Keyboard Assembly

3. Remove the screwdriver.

4. The key should now be free of the pivot. Lift the back of the key up slightly, then forward. The front edge of each key hooks through the keyboard chassis. Once the key is free of the pivot, you should be able to lift the key out from the keyboard chassis.

Caution: Each key has a small key spring. The key spring is positioned on the keyboard chassis (just in front of the pivot) and is held in place when the key is installed. When you remove a key, be sure you do not misplace the key spring.

Replacing a Sharp Key

Note: Always replace a sharp key before replacing the adjacent natural keys.

1. Verify the placement of the key spring.

2. Position the front end of the key through the keyboard chassis.

3. Lower the key into position. Align the pivot with the hole at the rear of the key.

4. Push down on the key. It should snap into position onto the pivot.

3-23

Disassembly/Assembly

PC3x Keyboard Assembly

Replacing a Natural/White Key

1. Verify the placement of the key spring.

2. Hook the front end of the key under the keyboard chassis.

3. Lower the key into position. Align the pivot with the hole at the rear of the key.

4. Push down on the key. It should snap into position onto the pivot.

Servicing the Keyboard Contact Boards

The Keyboard Assembly has nine keyboard stiffening brackets positioned along the underside of the chassis. Each bracket is secured to the keyboard chassis using three screws: two small machine screws through the chassis and one black screw through the contact board. To remove a contact board, you must ﬁrst remove the stiffening brackets.

1. Tilt the keyboard up (front edge of the keys facing down), and disconnect the ﬂat ribbon cables that connect the Treble and Bass Contact Boards to the Connector Board. The connectors are secured with tape. Peel back the tape to free the cables. Set the cables safely aside and lower the keyboard.

2. Place the keyboard upside down on a ﬂat soft surface. Be sure that the keys are resting on a soft surface to avoid scratching or other damage. The stiffening brackets and Treble and Bass Contact Boards are now visible.

Removing the Treble Contact Board

1. Disconnect the small ribbon cable that connects the Treble and Bass Contact Boards.

2. Remove the ﬁve stiffening brackets. Remove the 15 screws that secure the ﬁve brackets.

3. Remove the remaining 18 screws that secure the Treble Contact Board to the keyboard chassis, and remove the Treble Contact Board.

Replacing the Treble Contact Board

1. Position the Treble Contact Board on the keyboard chassis. Be sure that the rubber key contacts line up properly through the holes in the keyboard chassis.

2. Install the 18 screws that secure the board to the keyboard chassis.

3. Connect the small ribbon cable that connects the Treble to the Bass Contact Board.

4. Install the ﬁve stiffening brackets. Install the 15 screws that secure the ﬁve brackets.

Removing the Bass Contact Board

1. Disconnect the small ribbon cable that connects the Bass and Treble Contact Boards.

2. Remove the four stiffening brackets. Remove the 12 screws that secure the four brackets.

3. Remove the 18 screws that secure the board to the keyboard chassis, and remove the Bass Contact Board.

3-24

Replacing the Bass Contact Board

1. Position the Bass Contact Board on the keyboard chassis. Be sure that the rubber key contacts line up properly through the holes in the keyboard chassis.

2. Install the 18 screws that secure the board to the keyboard chassis.

3. Connect the small ribbon cable that connects the Bass to the Treble Contact Board.

4. Install the four stiffening brackets. Install the 12 screws that secure the brackets.

Connecting the Keyboard Contact Boards

1. Turn the keyboard over to its normal playing position.

2. Tilt the keyboard up (front of the keys facing down), and connect the ﬂat ribbon cables that connect the Treble and Bass Contact Boards to the Connector Board. Be sure to reapply the tape to secure the connectors. Lower the keyboard.

Removing the Keyboard Contact Strips

1. Place the keyboard upside down on a ﬂat soft surface. Be sure that the keys are resting on a soft surface to avoid scratching or other damage.

Disassembly/Assembly

PC3x Keyboard Assembly

2. Follow the procedure to remove the Bass and Treble Keyboard Contact Boards.

3. Examine the keyboard contact strips and look at the design of an individual contact. The top portion of the contact has two indentations. One indentation is deeper than the other. When replacing the keyboard contact strips, the deeper indentation is always positioned toward the rear of the key.

4. The keyboard contact strips have mounting pegs that secure the contact strips to the keyboard contact boards.

5. To remove a keyboard contact strip, gently lift and free the strip from its position. Be careful not to rip or damage any contact in the process.

Replacing the Keyboard Contact Strips

1. Position the contact strip on the Keyboard Contact Board that you are servicing.

Note: Be sure that the deeper indentation is positioned toward the rear of the key.

2. Line up the contact strip mounting pegs with their respective mounting holes on the keyboard contact board.

3. Using a small blunt-end tool (Q-Tip, toothpick, etc.), gently push the mounting pegs through the holes. Do not use too much force or use a tool that can poke a hole through the mounting pegs. However, be sure that the mounting pegs are installed through the holes and the contact strip is ﬂat against the PC board at each peg location.

3-25

Disassembly/Assembly

PC3x Keyboard Assembly

3-26

Chapter 4 Troubleshooting & Maintenance

Introduction

Cables, Connectors

Cables

All cables with connectors are keyed, and therefore cannot be reversed.

Warning: Some units may have a small PC board installed on the ﬂat ribbon cable connected to J202 on the Front Panel Board. Neither the socket nor the pins on this board are keyed. See Removing the Front Panel Board in Chapter 3, page 3-14 and page 3-16 for further information.

Cable Routing

In some cases, tape fastens cables to printed circuit boards or the top and bottom enclosures. When disconnecting cables, always peel back the tape from one side so that the tape remains properly positioned.

Surface-Mount Devices

The removal and replacement of surface-mount devices requires training and the proper equipment. If you do not have the training or equipment to remove or replace surface-mount devices, contact the service department to order a board replacement. International service technicians should contact their appropriate Young Chang Distributor.

Required Tools and Materials

• No. 1 Phillips head screwdriver

• No. 2 Phillips head screwdriver

• Small ﬂat head screwdriver

• Dowel (3mm diameter)

• Needle-nose pliers

• Small blunt-end tool (Q-Tip, toothpick, etc.)

• Extraction tool (use only an AMP 822154-1)

• USB cable

• xD card

• Foam blocks

4-1

Troubleshooting & Maintenance

Boot Loader

Use the PC3x’s Boot Loader to enter Diagnostics or perform a Hard Reset to the unit. You can also install operating system updates and objects into Flash memory.

Entering the Boot Loader

Apply power to the unit. When the ****Welcome to the Kurzweil PC3**** message appears in the LCD, quickly press and release the Exit button.

There are ﬁve menu options available in the PC3x Boot Loader. The following is a brief description of the available menu options.

Run PC3—Exits the Boot Loader and returns the unit to normal operation.

Update Image—Select this to install new system software and objects.

Run Diags—Enters the diagnostic test menu. For a complete list of tests and the procedure to

execute the diagnostic tests, refer to Chapter 2, Diagnostics.

System Reset—Clears the memory and restores the unit to factory default settings.

File Utilities—Use this to select one of the following functions: format an xD card, save and

restore PC3x ﬁles, or execute a PC3x image from an xD card or USB ﬁle.

Resets

Hard Reset

Soft Reset

There are two ways to perform a Hard Reset to the PC3x.

1. Press the Master Mode button. On page 1 in Master Mode, press the soft button below Reset. The LCD displays a warning message indicating all user objects will be deleted. Press the soft button below Yes to erase all user objects and restore the unit to factory settings or the soft button below Cancel.

2. Enter the Boot Loader and press the soft button below System Reset. The LCD displays a warning message that all user objects will be deleted. Press the soft button below Reset to erase all user objects and restore the unit to factory settings or the soft button below Cancel.

The Soft Reset does not erase user programs and setups and is equivalent to turning the power off and on. To Soft Reset a PC3x, simultaneously press the +/-, 0 and Clear buttons.

4-2

Saving User Data

To save user data, ﬁrst apply power to the PC3x. Once the unit is on and ready for normal operation, follow the procedure to save user data to an xD card or a computer.

Saving to an xD Card

Note: The following procedure assumes that you have a computer with an xD card writer. Use either a Windows or MacOS formatted xD card up to 256 Mb. If you format an xD card, use DOS format, FAT 16.

You can format xD cards on the PC3x, enter the Boot Loader and select the FILE UTILITIES soft button. However, the maximum size for xD cards formatted on the PC3x is 128Mb.

1. Insert a formatted xD card into the card slot located on the rear panel of the PC3x.

2. Press the Storage Mode button.

3. The card should be the currently selected storage device.

4. Press the Store soft button.

Troubleshooting & Maintenance

Saving User Data

5. Highlight All Types and press the Select soft button. (An asterisk to the left of the ﬁle name indicates the selected ﬁle.) Use the Right or Left cursor buttons to highlight

Range/Bank and turn the Alpha Wheel to scroll down to Everything. Press the Select soft button.

6. Press the Store soft button.

7. Press the OK soft button and follow the display prompts.

Saving to a Computer

1. Connect a USB cable from a computer to the USB port on the PC3x.

2. Press the Storage Mode button.

3. Press the Right or Left cursor buttons or turn the Alpha Wheel to highlight USB Temporary Drive.

4. Select the Choose soft button. The display indicates that the USB port is changed from a MIDI to a USB connection.

5. Press the Store soft button.

6. Highlight All Types and press the Select soft button. (An asterisk to the left of the ﬁle name indicates the selected ﬁle.) Use the Right or Left cursor buttons to highlight

Range/Bank and turn the Alpha Wheel to scroll down to Everything. Press the Select soft button.

7. Press the Store soft button.

8. Press the OK soft button and follow the display prompts.

4-3

Troubleshooting & Maintenance

Software Updates

Updating with an xD Card

Warning: This procedure requires performing a hard reset. All user objects will be erased. Before continuing, be sure to save all user programs and setups to an xD card or computer following the procedure on page 4-3.

The following procedure assumes that you have a computer with an xD card writer. Use either a Windows or MacOS formatted xD card up to 256 Mb. If you format an xD card, use DOS format, FAT 16.

You can format xD cards on the PC3x, enter the Boot Loader and select the FILE UTILITIES soft button. However, the maximum size for xD cards formatted on the PC3x is 128Mb.

1. Go to www.kurzweilmusicsystems.com and follow the links to download the latest software version.

2. Insert an xD card into the card writer and drag and drop the downloaded ﬁles onto the card.

3. Remove the xD card and insert it into the xD card slot on the PC3x.

4. Apply power to the unit. When the ****Welcome to the Kurzweil PC3**** message appears in the LCD, quickly press and release the Exit button.

5. From the PC3x Boot Loader, select UPDATE IMAGE.

6. Select the MAIN IMAGE soft button.

7. Use the Up or Down cursor buttons or turn the Alpha Wheel to move through the list of available ﬁles. (An asterisk to the left of the ﬁle name indicates the selected ﬁle.)

Note: Operating System ﬁles have .BIN as the ﬁle extension. Object ﬁles have .PC3 as the ﬁle extension.

8. Press the CHOOSE soft button to begin updating. The LCD displays a message when the process is complete. Typically, this should take about ten seconds.

9. Press the OK soft button.

10. Select MAIN OBJECT from the UPDATE IMAGE menu.

11. Repeat Steps 7–9.

12. From the Boot Loader main menu, select the SYSTEM RESET button. The LCD displays a warning message that all user objects will be deleted. Select the soft button below Reset.

4-4

13. Select the RUN PC3 soft button from the main menu to test the software updates.

Updating via Computer

Warning: This procedure requires performing a hard reset. All user objects will be erased. Before continuing, be sure to save all user programs and setups to an xD card or computer following the procedure on page 4-3.

1. Connect a USB cable from a computer to the USB port on the PC3x.

2. Apply power to the unit. When the ****Welcome to the Kurzweil PC3**** message appears in the LCD, quickly press and release the Exit button.

3. Check the computer desktop and verify that the “Kurzweil PC3”device is present. This should appear on the desktop as an icon or window. Typically, this should take about 2–3 seconds. However, it can take up to 30 seconds to be recognized.

4. Go to www.kurzweilmusicsystems.com and follow the links to download the latest software version.

Note: Be sure to always read the downloaded release notes and installation instructions in case they have changed since this manual was written.

Troubleshooting & Maintenance

Software Updates

5. From the PC3x Boot Loader, select UPDATE IMAGE.

6. Select the MAIN IMAGE soft button.

7. Use the Up or Down cursor buttons or turn the Alpha Wheel to move through the list of available ﬁles. (An asterisk to the left of the ﬁle name indicates the selected ﬁle.)

Note: Operating System ﬁles have .BIN as the ﬁle extension. Object ﬁles have .PC3 as the ﬁle extension.

8. Press the CHOOSE soft button to begin updating. The LCD displays a message when the process is complete.

9. Press the OK soft button.

10. Select MAIN OBJECT from the UPDATE IMAGE menu.

11. Repeat Steps 7–9.

12. From the Boot Loader main menu, select the SYSTEM RESET button. The LCD displays a warning message that all user objects will be deleted. Select the soft button below Reset.

13. Select the RUN PC3 soft button from the main menu to test the software updates.

4-5

Troubleshooting & Maintenance

Rebuilding the Internal NAND Flash Memory

It is unlikely but possible for the Internal NAND Flash Memory to become corrupted such that normal hard reset and software update procedures fail. In particular, if the LCD displays the following: Internal File System Error. Low-level fmt error. and recurs even after a power cycle, the internal ﬂash memory ﬁle system is probably corrupted.

The following procedure can be used to rebuild the Internal NAND Flash Memory using either an xD card or the USB port via computer. Before starting you will need a special utility program called PC3FT040.BIN or a later version (last 3 digits are a higher number). This program may be downloaded from the kurzweilmusicsystems.com website. This program can reformat the internal ﬂash memory then copy needed system ﬁles to it. The Diagnostics ﬁle can also be downloaded from the website.

Rebuilding with an xD Card

Warning: Rebuilding the Internal NAND Flash Memory also does a hard reset erasing all user created ﬁles and restores the unit to factory settings.

The following assumes that you are familiar with the procedures to enter the Boot Loader and perform normal system updates using an xD Card or the USB port via computer.

1. 1. Using an xD card reader/writer, copy these four ﬁles to an xD card:

• File Transfer utility, PC3FT040.BIN or higher

• PC3 Operating System ﬁle, PC3OS111.BIN or higher

• PC3 Diagnostics ﬁle, PC3DG018 or higher

• PC3 Objects ﬁle, PC3OB111.PC3 or higher

2. Turn on the PC3x and enter the Boot Loader. Then insert the xD card into the slot on the PC3x.

3. Press the File Utilities soft button.

4.

5. Press the EXEC from file soft button.

6. Using the Alpha Wheel, select the File Transfer Utility ﬁle then press the CHOOSE soft button. In a couple of seconds the program will run and display a new menu.

7. Press the FORMAT FLASH soft button. Press the FORMAT soft button again to conﬁrm. Formatting will take about 5-10 seconds.

8. A new menu should appear. The third line will display, File system not set up.

9. Press the SETUP SYSTEM soft button. A message File structure built will appear brieﬂy then another menu.

10. The ﬁrst line should display, Choose a synth executable file:. Use the Alpha Wheel to select the PC3 Operating System ﬁle then press the CHOOSE soft button. Installation will take about ﬁve seconds.

4-6

11. The top line should now display, Choose a diags executable file:. Select the Diagnostics ﬁle, then press the CHOOSE soft button. Installation will take only a second or two. A message Bootable system built. displays brieﬂy then a new menu will display.

12. The top line should now display, Choose a system objects file:. Select the PC3 Objects ﬁle then press the CHOOSE soft button. Installation will take about 10 seconds. A message System objects installed. displays brieﬂy then the root menu will display.

13. Press the Quit soft button then press the <back> soft button on the next menu. The normal Boot Loader menu should now be displayed.

14. Press the RUN PC3 soft button. The PC3x should boot up normally.

Rebuilding via a Computer

Warning: Rebuilding the Internal NAND Flash Memory also does a hard reset erasing all user created ﬁles and restores the unit to factory settings.

Troubleshooting & Maintenance

Rebuilding the Internal NAND Flash Memory

The following assumes that you are familiar with the procedures to enter the Boot Loader and perform normal system updates using an xD Card or the USB port via computer.

1. Connect a USB cable from a computer to the USB port on the PC3x.

2. Apply power to the unit. When the ****Welcome to the Kurzweil PC3**** message appears in the LCD, quickly press and release the Exit button.

3. Check the computer desktop and verify that the “Kurzweil PC3”device is present. This should appear on the desktop as an icon or window. Typically, this should take about 2–3 seconds. However, it can take up to 30 seconds to be recognized.

4. Copy the File Transfer utility, PC3FT040.BIN or higher, to the Virtual USB drive.

5. Press the File Utilities soft button.

6. Press the EXEC from file soft button.

7. Using the Alpha Wheel, select the File Transfer Utility ﬁle then press the CHOOSE soft button. In a couple of seconds the program will run and display a new menu.

Note: On Macintosh Operating systems, a message will appear stating that a Device has been removed. Click the OK (on your Mac) and proceed. On Windows XP Operating systems, the Virtual USB drive will go away and come back empty. It may take a few seconds for the Virtual USB drive to appear again. If it does not automatically appear, you can ﬁnd it by going to My Computer and it should be under Devices with Removable Storage.

8. At this point, the File Utilities application has already been executed (this is what you are running), and will no longer appear in the Virtual USB drive. You will need to copy the following three ﬁles to the USB drive on your computer desktop:

4-7

Troubleshooting & Maintenance

Rebuilding the Internal NAND Flash Memory

• PC3 Operating System ﬁle, PC3OS111.BIN or higher

• PC3 Diagnostics ﬁle, PC3DG018 or higher

• PC3 Objects ﬁle, PC3OB111.PC3 or higher

9. Press the SETUP SYSTEM soft button. A message File structure built will appear brieﬂy then another menu.

10. The ﬁrst line should display, Choose a synth executable file:. Use the Alpha Wheel to select the PC3 Operating System ﬁle then press the CHOOSE soft button. Installation will take about ﬁve seconds.

11. The top line should now display, Choose a diags executable file:. Select the Diagnostics ﬁle, then press the CHOOSE soft button. Installation will take only a second or two. A message Bootable system built. displays brieﬂy then a new menu will display.

12. The top line should now display, Choose a system objects file:. Select the PC3 Objects ﬁle then press the CHOOSE soft button. Installation will take about 10 seconds. A message System objects installed. displays brieﬂy then the root menu will display.

13. Press the Quit soft button then press the <back> soft button on the next menu. The normal Boot Loader menu should now be displayed.

14. Press the RUN PC3 soft button. The PC3x should boot up normally.

4-8

Boot EPROM

The PC3x uses a 32 pin EPROM located at U4 to store the boot up information for the CPU.

Removing the EPROM

1. Place the PC3x upside down on a ﬂat protected surface.

2. Remove the seven screws that secure the access panel and set it safely aside.

3. Use an AMP 822154-1 extraction tool to remove the EPROM.

Warning: Typically, you would insert the tool at one corner to lift the EPROM then repeat the process at the other corner. However, because of the proximity between the U4 socket and the keyboard, this is not possible.

4. Insert the thin, straight end of the tool into the extraction hole closest to the xD/Daughter Board.

5. Slightly, lift up the corner of the EPROM.

Troubleshooting & Maintenance

Boot EPROM

Warning: While the extraction tool is inserted into the extraction hole, do not to allow the tool to move from side to side. Doing so could cause damage to the EPROM or the socket.

6. Remove the tool.

7. Insert the curved end of the tool into the same extraction hole.

8. To remove the EPROM, slide the tool farther toward the center of the EPROM so that it will lift straight up and out of the socket.

Caution: Place a ﬁnger on top of the EPROM so that it does not pop out suddenly either damaging it or landing in an inaccessible area.

Replacing the EPROM

1. Position the EPROM over the socket. Be sure the beveled corner of the EPROM is correctly positioned over the corresponding corner of the socket.

Caution: If you need to reposition the EPROM, always lift it up from the socket ﬁrst.

2. Gently press the center of the EPROM into the socket and verify that the EPROM is correctly positioned. Using too much pressure, may cause the PC board to ﬂex and damage the delicate solder connections under the MARA ICs.

3. Position the access panel on the bottom enclosure and install the seven screws to secure it.

4-9

Troubleshooting & Maintenance

Replacing the Battery

The PC3x uses a ﬂat three volt Lithium coincell battery to power the clock. When the battery voltage runs low, the unit boots up with a low battery message.

Note: The battery voltage can be checked at anytime using the Scanner Diagnostics. See page 4-11 for more information.

Accessing the Battery

1. Place the PC3x upside down on a ﬂat protected surface.

2. Remove the seven screws that secure the access panel and set it safely aside.

Removing the Battery

The battery (CR2032) in the PC3x keyboard is mounted into a holder on the Engine Board and is accessible when the access panel is removed.

1. Insert a ﬂat plastic tool (plastic knife, pen cap, etc.) into one of the openings between the battery and the holder to lift the battery.

Insert the tool here to lift the battery.

Figure 4-1 Battery and holder

2. Ease the battery out of the holder. If necessary, insert the plastic tool at the bottom of the holder (closest to the Engine Board) to remove the battery.

Installing the Battery

Caution: Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type (CR2032).

1. Position the battery over the holder so that the positive terminal is pointing to the Expansion ROM sockets.

CR2032

Insert the tool between the holder and the battery to ease the battery out of the holder.

4-10

2. Slide the battery into the holder and apply slight pressure until it snaps into place.

3. Position the access panel on the bottom enclosure and install the seven screws to secure it.

Scanner Tests

The Scanner Tests for the PC3x include separate tests for the front panel buttons and LEDs, front panel sliders including the Master Volume slider, the Alpha Wheel, the Mod and Pitch wheels, the keyboard, and the pedals.

Note: Before beginning the tests, remove the cables from the main output jacks. If a cable is plugged into the main right output jack when you enter the Scanner Tests, you will see a RIGHT JACK message in the display.

To enter the Scanner Tests, ﬁrst turn on the PC3x. Once the PC3x is on and ready to play, simultaneously hold down the 4, 5 and 6 buttons. All front panel LEDs will ﬂash and the LCD will slowly display the following:

Troubleshooting & Maintenance

Scanner Tests

PC3 Scan V1.5 DIAG B=3.2 W=122 OPT=-3-- SLIDER 4 = 128

OK

Figure 4-2 LCD example, PC3x scanner tests

The ﬁrst line of the display shows the scanner software version, the battery voltage, the current value for the Pitch Wheel position, and the keyboard conﬁguration. The second line shows the results of the current test. Figure 4-2 shows the result of a slider test—in this case moving slider 4 to center.

Note: While running the Scanner Tests, the blue Program button LEDs light up in different patterns. The pattern represents the hexadecimal value of the button.

To exit the Scanner Tests and return to normal operation, simultaneously press the Cancel and Enter buttons.

Front Panel Buttons

To test a button, press any front panel button. An example of the expected test result for the Program button follows:

BUTTON 12 Program

The number “12” is the row/column matrix address of the button and Program is the expected button at that address.

4-11

Troubleshooting & Maintenance

Scanner Tests

Alpha Wheel

To test the Alpha Wheel, turn it to increase or decrease the value by one. Turning clockwise should increase the numbers in order 0-1-2-3-0-1-2... and decrease the numbers in order 3-2-1-03-2-1... turning counterclockwise. The expected test result when the Alpha Wheel is turned is one of four values–0, 1, 2, or 3:

SPINKNOB = 3

Front Panel Sliders

To test the front panel sliders, move a slider to check its value at the bottom, center, and top. An example of the normal test results for the Slider A follows (your results may vary slightly):

At bottom: SLIDER 1 = 0

At center: SLIDER 1 = 128

At top: SLIDER 1 = 255

Right Main Output

Insert a 1/4” plug or cable into the Main Right Output. The expected test result follows:

RIGHT JACK

Remove the plug or cable and the message should disappear.

Switch Pedals 1, 2, and 3

To test a switch pedal, press the pedal. An example of the expected test result for the switch pedal 1 follows:

Full depression: PEDAL 1

Continuous Control Pedal 1 and 2

To test the continuous control pedal, press the pedal. An example of the expected test result for the continuous control pedal follows:

No depression: CTRL PEDAL = 0

Full depression: CTRL PEDAL = 255

4-12

Wheels

To test the pitch and mod wheels, move the wheel up and down. An example of the expected test results for the pitch wheel follows (your results may vary slightly):

At bottom: PITCH WHEEL = 0

At center: PITCH WHEEL = 128

At top: PITCH WHEEL = 255

Adjusting the Pitch Wheel Center

If the scanner test results for the pitch wheel do not match the expected results above, the pitch wheel may need to be adjusted.

1. Refer to the diagram below and identify the opening provided through the bottom enclosure to adjust the pitch center.

2. Insert a small ﬂat head screwdriver, move the pitch wheel, and adjust the trimpot to read the expected values (your results may vary slightly).

Troubleshooting & Maintenance

Scanner Tests

R14, White Pressure Range

R3, Pitch Center

Keyboard

Rear panel

Figure 4-3 Bottom enclosure, trimpot locations

Keyboard

To test the keyboard, press any key. The key name and number will be displayed twice in the LCD. The ﬁrst set of name and number is the test result for the front key contact switch and the second is for the rear switch. An example of the expected test result for the Middle C key follows:

KEY C4 60 C4 60

Pressing harder, the display will change to show an increasing range of pressure values from about 20 to at least 246.

Adjusting Key Pressure Sensitivity

1. To adjust the key pressure sensitivity, refer to the diagram above and identify the openings provided through the bottom enclosure to adjust the white and black keys.

R15, Black Pressure Range

2. Insert a small ﬂat head screwdriver, press any key (equivalent to a hard key strike), and adjust the trimpot to the expected value (your results may vary slightly).

4-13

Troubleshooting & Maintenance

Power Problems

Dead: LEDs, LCD backlight, and xD Card socket not lit

Before opening the unit, verify the following:

1. The AC outlet is supplying power.

2. The AC cord is good and properly connected to the unit.

3. Check fuses. The fuses are located in the power entry module on the rear panel. See the instructions beginning on page 4-18 to convert the voltage. Be sure to check the red voltage indicator on the power entry module and verify that it is set to the correct voltage for your location. If a unit set for 120V is plugged into 240V, the fuses will blow immediately but no damage should occur to the unit.

4. Place the PC3x upside down on a ﬂat protected surface.

5. Remove the seven screws that secure the access panel and set it safely aside.

6. Disconnect the stranded wire cable at J21 on the Engine Board. Refer to page 9 of the Engine Board schematics, see page 6-11 in Chapter 6. Verify the voltages at the connector.

• Pin 1, ground

• Pin 2, 5 volts

• Pin 3, -12 volts

• Pin 5, 12 volts

7. Open the unit.

8. Disconnect the stranded wire cable at J301 on the Connector Board. Refer to page 3 of the Connector Board schematics, see page 6-14 in Chapter 6. Verify the voltages at the connector. (See Step 6.)

9. Refer to the Connector Board schematics, see page 6-14 in Chapter 6, and verify the AC power voltages at J324. If these voltages are present and correct, replace the Connector Board. If these voltages are incorrect, suspect the transformer or power entry module.

Audio Problems

No Audio

1. Run the Scanner Diagnostics to check the volume slider operation.

2. Refer to the Interconnect Diagram.

3. Check the ﬂat ribbon cable from J18 on the Engine Board to J302 on the Connector Board.

4-14

4. Check the solder connections at the connectors.

5. Refer to the Engine Board schematics and check the signal activity on the DAC, U33.

6. Trace the signal path from the Engine Board through the Connector Board to the audio jacks.

Front Panel Problems

LCD not lit

1. Check the LCD brightness and contrast potentiometers on the rear panel. Turn the pots to see if there is any change.

2. Check the ﬂat ribbon cable from the J304 on the Connector Board. Disconnect and reseat the cable.

3. Check the cable and solder connections from the LCD to J203-1 and J203-2 on the Front Panel Board.

4. Refer to the Front Panel Board schematics and check the signal path.

LCD lit, no characters

1. Place the PC3x upside down on a ﬂat protected surface.

2. Remove the seven screws that secure the access panel and set it safely aside.

3. Check the stranded wire cable at the J5 location on the Engine Board. Be sure it is seated properly. If necessary, disconnect and reseat it.

Troubleshooting & Maintenance

Front Panel Problems

4. Check the ﬂat ribbon cable at J15 on the Engine Board. Be sure it is seated properly. If necessary, disconnect and reseat it.

5. Open the unit.

6. Check solder connections on the LCD and Engine Boards.

7. Refer to the Engine Board schematics, see page 6-8 in Chapter 6. Check the LCD_CONT signal path.

8. Refer to the Connector Board schematics, see page 6-14 in Chapter 6. Trace the contrast signal from Q4. It should be in the range of -7V to -10V depending on the Contrast control setting.

Buttons, Sliders or Controllers not working

1. Run the Scanner Tests. If the tests pass, the problem is likely the result of a setting in the Control Setup. Perform a Hard Reset to the unit or refer to the Control Setup sections in the Getting Started Guide.

2. Refer to the Interconnect Diagram.

3. Check all related cables. Disconnect and reseat the cables.

4. Check the solder connections at the connectors.

5. Check front panel ribbon cable(s).

6. Refer to the Connector Board schematics and check U1, IC Scanner M38869, for signal activity.

7. Check for the presence of +5V +/-5% on the Ring connection to either Continuous Control Pedal jack.

4-15

Troubleshooting & Maintenance

Keyboard Problems

Dead Keyboard

1. Run the Scanner Tests. If the tests pass, the problem is likely the result of a setting in the Control Setup. Perform a Hard Reset to the unit or refer to the Control Setup sections in the Getting Started Guide.

2. Check the ﬂat ribbon cables connecting the keyboard Bass and Treble Contact Boards to the Connector Board, locations J307 and J306 respectively. Be certain that the cables are not loose or damaged.

3. Disconnect and reseat the cables.

4. Refer to the Connector Board schematics.

5. Check U1, IC Scanner M38869 on the Connector Board for keyboard signals.

6. Trace signal path.

7. Find and replace bad component(s) or order a board replacement.

Dead Note(s) or no velocity sensitivity

One or More in a Section

1. Remove related contact board.

2. Check the keyboard contact strip for dirt, damage or wearing. Clean dirty contacts with denatured alcohol. Replace a damaged or worn keyboard contact strip.

3. Install keyboard contact strip.

4. If section is still dead, remove strip and check contact board for shorts, cold solder joints, etc.

5. Find and replace bad component(s) or order a replacement board.

4-16

PC3x Interconnect Diagram

*The routing of this cable is important! See Chapter 3, Page 3-8.

Troubleshooting & Maintenance

PC3x Interconnect Diagram

USB/xD

Daughter Card

J1

J324

AC

Power

XFMR

AC

J301

PC3

Power

J12

USB/SM Card

J325

Dig.

Audio Out

J15

J5

Audio Out

J18

J10 Bank 0 Expansion Sound ROM

Dig. Audio Out

J33

Connector Board

J303 MIDI

J305

& CPU

Slider

J308

Wheels

Graphic LCD

MIDI & CPU

J21

Expansion Sound ROMJ11 Bank 1

Engine Board

J306

Treble

J307 Bass

PC3 Power

J304

Front Panel

J302

Audio Out

LCD

J303 FP Bridge

Slider Board

J204 Pitch

J201

Board

J205 Mod

Wheels

IBBB

J301

J304

J302

Wheels Board

J202

J203

J202

Front Panel

Board

J203-2 J203-1

J201

FP Bridge

4-17

Troubleshooting & Maintenance

Converting the Voltage

Accessing the Fuses

1. Turn the power off and remove the power cord.

2. The fuse holder is located on the rear panel and is part of the power entry module.

3. The outer cover for the power switch and the fuse holder is a hinged door.

4. Insert, at an angle, a thin ﬂat tool into the red voltage indicator window.

5. Gently pull up the fuse holder cover.

4-18

6. Position the ﬂat tool as shown in the photo above and pry out the fuse holder.

The Fuse Holder

The fuse holder used in the PC3x can accommodate different fuse conﬁgurations. In general, two fuses are required in EU countries and for all units conﬁgured for 230V regardless of location. Only one fuse is required in the USA. Check local regulations for requirements in other locations. Two fuses may be used in the USA if the conversion clip is removed. See the photos and instructions that follow to remove the conversion clip.

The fuse sizes may be either 1.25” X 0.25” or 5 mm X 20 mm. For units set to 115V, use two 500mA fast blow fuses. For units set to 230V, use two 250mA fast blow fuses.

Warning: When only one fuse is used, a conversion clip must be installed in the other fuse location.

1. The photo below shows the position of the conversion clip for a unit with only one fuse.

Troubleshooting & Maintenance

Converting the Voltage

2. To conﬁgure the fuse holder for two fuses, you must remove the clip.

4-19

Troubleshooting & Maintenance

Converting the Voltage

3. Lift off the clip.

4. Be sure to save the conversion clip so that it can be installed if the fuse holder is once again conﬁgured for a single fuse.

4-20

Using 5 mm X 20 mm Fuses

1. If you use 5 mm X 20 mm fuses, install them toward the inside end of the fuse holder near the metal pins.

2. The photo below shows the correct position for a 5 mm X 20 mm fuse.

Troubleshooting & Maintenance

Converting the Voltage

Replacing the Fuse Holder

1. Insert the fuse holder into the power entry module. The indicator showing the desired voltage should be positioned toward the outer edge of the module away from the power switch.

2. Close the fuse holder cover.

3. Check the voltage indicator and verify the desired voltage is present in the window.

4. The unit is now ready for operation.

5. Be sure to connect the correct power cord to match the current voltage.

4-21

Troubleshooting & Maintenance

Converting the Voltage

4-22

Chapter 5 Parts Lists

The parts lists included in this chapter are for information purposes only and may change without notice. However, service notices are published to inform ﬁeld service personnel of signiﬁcant changes that may effect the operation of products already in the ﬁeld.

In most cases, other than general maintenance and minor repairs, contact the Kurzweil Service Department to order a board replacement. International service personnel should contact their appropriate Kurzweil Distributor.

PCB & Sub Assemblies

Part No. Description

1010101190 Engine Board Assembly

1010400640 LCD Assembly

1010900210 Button Board

1010900220 Slider Board

1010900230 Front Panel Board

1011000740 Connector Board

1019900070 Engine Board–USB x/D Daughtercard

1012400340 Wheels Assembly

Engine Board

Part No. Description Qty. Reference Designation

603010084 CAP CER X7R 4700pF 50V 10% 0603 2 C228, C232

603010107 CAP CER NPO 270pF 50V 5% 0603 20

603010111 CAP CER X5R 10uf 6.3V 10% 0805 5 C139, C248, C263, C277, C280

603010114 CAP CER NPO 33pF 50V 5% 0603 4 C17, C18, C142, C143

603010115 CAP CER NPO 56pF 50V 5% 0603 2 C229, C233

603010116 CAP CER NPO 1000pF 50V 5% 0603 10

603010117 CAP CER X7R 10000pF 16V 10% 0603 2 C247, C262

603010118 CAP CER X7R 0.1uF 16V 10% 0603 160

603010119 CAP CER Y5V 0.1uF 25V +80/-20% 0805 17

603010120 CAP CER X5R 1uf 6.3V 10% 0805 4 C81, C82, C124, C125

603020004 CAP ELC LOZ 100uF 6.3V 20% SZD SMT 6 C54, C79, C97, C112, C122, C156

603020013 CAP ELC GP 2.2uF 50V 20% SZB SMT 1 C250

C172, C174, C175, C178, C181, C187, C188, C191, C193, C195, C196, C199, C201, C203, C204, C207, C208, C213, C216, C220

C173, C177, C186, C190, C194, C198, C202, C206, C210, C217

C1-5, C8-16, C19-53, C57, C59-63, C66-68, C71-78, C84-96, C100-111, C114-121, C127-138, C140, C141, C144-155, C158, C159, C225-227, C234, C236-241, C243, C245, C249, C252-261, C264, C273-276, C281, C282, C284-286

C157, C176, C179, C180, C182, C183, C185, C189, C192, C197, C200, C205, C209, C211, C214, C218, C221

Parts Lists

Part No. Description Qty. Reference Designation

603020014 CAP ELC LOZ 22uF 6.3V 20% SZB SMT 13

603080007 CAP ELC GP 10uF 35V 20% 0.20D 0.43H 0.079"SP RAD 13 C184, C212, C215, C219, C222, C251, C266-272

603080035 CAP ELC LOZ 220uF 25V 20% 8D 11.5H 3.5mmSP RAD 6 C223, C224, C230, C231, C235, C242

608030002 DIODE RECT GP SMT 1A S1A 50V SMA 1N4001 1 D5

608040005 DIODE SHTKY 1A SMB5817 20V SMT DO-214AA 2 D7, D9

6080100080 DIODE SW BAS16 75V 75mA SOT-23 5 D3, D4, D6, D8, D10

6080100090 DIODE SHTKY SIG 5ns LO-C SL BAS40 SOT-23 1 D11

628010032 CON HDR DIP 0.1" SQR PIN .23HD .12"TL 6POS 1 J29

628010062 CON HDR DIP 0.1" RIBON FL SHRD KEYED 14POS 1 J6

628010084 CON HDR DIP 0.1" RIBON FL SHRD 20POS 1 J15

628010110 CON SIP HEADER .1"SP (2.54MM) 3POS 6 J1, J14, J23, J25, J26, J34

628010115 CON HDR SIP 0.156" SQR PIN LOK 8POS 1 J21

6209900150 CON COINCELL HOLDER TOSHIBA BV-32 1 J20

6209900170 SOCKET IC DIMM 168POS .050LS PLSTC PD NI AU PL 2 J10, J11

6209900190 SOCKET IC PLCC SMT 32POS RECT 1 FOR U4

6280101020 CON HDR SIP 2.5mm SPOX FL SHRD 10POS 1 J5

6280101070 CON HDR SIP 2.5mm SPOX FL SHRD 6POS 1 J33

6280101160 CON HDR DIP 2mm SQR PIN .126HD .097TL TIN 28POS 1 J12

6280101170 CON HDR DIP 0.1" SQR PIN .23HD .12"TL 4POS 1 J3

6280101210 CON HDR SIP 2.5mm SPOX FL SHRD 12POS 1 J18

6040100160 IND SMT 22uH 20% 0.1 OHM 1.95A 10mm PM105-220M 2 L14, L15

6060100070 IND FE BD 2.5-TURN SMT 2 L8, L13

6060100080 IND FE BD SMT 500mA 600 OHM @ 100MHz 0805 11 L1-7, L12, L16-18

6090100180 TRN SIG GP NPN MMBT2222A 40V 0.5A SOT-23 1 Q2

6090100190 TRN SIG GP PNP MMBT2907A 40V 0.5A SOT-23 1 Q1

602010002 RES THICK FILM 0 OHM 5% 1/8W 0805 T&R 11 R14, R16, R20, R62, R63, R69, R70, R71, R156, R179, R180

602010007 RES THICK FILM 10 OHM 5% 1/8W 0805 T&R 2 R177, R178

602010011 RES THICK FILM 100 OHM 5% 1/8W 0805 T&R 3 R44-46

602010014 RES THICK FILM 1.0K OHM 5% 1/8W 0805 T&R 12 R1, R3, R4, R13, R61, R72, R82, R140, R145-147, R149

602010019 RES THICK FILM 10K OHM 5% 1/8W 0805 T&R 18

602010051 RES THICK FILM 1.5K OHM 5% 1/8W 0805 T&R 1 R11

602010070 RES THICK FILM 2.0K OHM 5% 1/8W 0805 T&R 1 R38

602010072 RES THICK FILM 20K OHM 5% 1/8W 0805 T&R 3 R148, R150, R157

602010073 RES THICK FILM 22 OHM 5% 1/8W 0805 T&R 6 R15, R35, R36, R37, R136, R137

602010107 RES THICK FILM 33 OHM 5% 1/8W 0805 T&R 2 R154, R155

602010109 RES THICK FILM 330 OHM 5% 1/8W 0805 T&R 3 R8, R138, R151

602010239 RES THICK FILM 24.9 OHM 1% 1/16W 0603 T&R 8 R21-28

602010249 RES THICK FILM 2.10K OHM 1% 1/10W 0805 T&R 1 R9

602010250 RES THICK FILM 3.01K OHM 1% 1/10W 0805 T&R 1 R12

602010254 RES THICK FILM 15.0K OHM 1% 1/10W 0805 T&R 2 R130, R134

602010257 RES THICK FILM 31.6K OHM 1% 1/10W 0805 T&R 1 R132

602010261 RES THICK FILM 5.1M OHM 5% 1/10W 0805 T&R 1 R39

602010264 RES THICK FILM 0 OHM 5% 1/10W 1206 T&R 2 R181, R182

602010265 RES THICK FILM 13.0K OHM 1% 1/10W 0805 T&R 1 R135

C55, C56, C69, C70, C80, C83, C98, C99, C113, C123, C126, C244, C246

R2, R6, R7, R17, R18, R31, R32, R34, R41, R42, R43, R48, R56, R57, R60, R83, R175, R176

5-2

Part No. Description Qty. Reference Designation

602020001 RES THIN FILM 4.75K OHM 1% 1/10W 0805 T&R 42

602020002 RES THIN FILM 10.0K OHM 1% 1/10W 0805 T&R 6 R115, R118, R123, R126, R131, R133

602020003 RES THIN FILM 11.8K OHM 1% 1/10W 0805 T&R 20

602030005 RES NET QUAD ISO 10K OHM 5% 1/16W 18 RN1-6, RN12-19, RN33-36

602030020 RES NET QUAD ISO 4.7K OHM 5% 1/16W 2 RN9, RN10

602030025 RES NET QUAD ISO 1.0K OHM 5% 1/16W 2 RN31, RN32

602030028 RES NET QUAD ISO 22 OHM 5% 1/16W 6 RN11, RN20, RN30, RN37-39

602030029 RES NET QUAD ISO 10 OHM 5% 1/16W 8 RN21-28

6150000060 RELAY DPDT 5VDC 5 RY1, RY2, RY3, RY4, RY5

6010101130 IC ANA OPAMP NJM4580E DL BIP LO-NOIS SOP8-160 6 U35-40

6010103440 IC ANA VREG LDO 2.5V 250mA SOT-23 1 U47

6010103460 IC MEM DDR SDRAM 2Mx16x4 BANKS TSOP-66 PB-FREE 1 U13

6010103470 IC ASIC VLSI MARA REV3 2 U10, U11

6010103690 IC 74LCX139 DEMUX/DECODER 2X 2-OF-4 TSSOP-16 2 U24, U26

6010103830 IC DC-DC STEPDOWN PWM CONTROLLER 300KHz 1 U41

6010103840 IC DIG 74LV245A OCT BUS XCEIVER 3-ST TSSOP20 1 U27

6010103860 IC PLD XC9536XL 3.3V 5ns VQFP-44 1 U45

6010103870 IC MASK (P2ROM) PC3 BASE-0 EVEN SOUND ROM 16 MB 1 U23

6010103880 IC MASK (P2ROM) PC3 BASE-0 ODD SOUND ROM 16 MB 1 U22

6010103890 IC MASK (P2ROM) PC3 BASE-1 EVEN SOUND ROM 16 MB 1 U21

6010103900 IC MASK (P2ROM) PC3 BASE-1 ODD SOUND ROM 16 MB 1 U20

6010103910 IC EPROM OTP 256KX8 120ns PLCC32 RoHS 1 U4

6010103960 IC DIG NC7WZU04 TINY UHS DUAL UNBUFFERED INVERT 1 U14

6010103980 IC DIG 74AHCT125 QD BUS BUF 3-ST TSSOP14-4.4mm 2 U28, U46

6010103990 IC DIG 74AHCT245 OCT BUS XCEIVER 3-ST 1 U29

6010104010 IC DIG 74VHC05 HX INV OD TSSOP14-044 1 U9

6010104020 IC DIG LV BUFFER\LINE DRIVER W/5V TOL TSSOP 4.4mm 1 U5

6010104030 IC DIG LV QUAD BUFFER W/5V TOL 74LCX125MTCX 1 U12

6010104040 IC BUS EXCHANGE SW 24BIT SSOP56 74CBTLV16212DL 4 U16-19

6010104050 IC DIG NC7WZ08 TINY UHS DUAL 2-IN AND 2 U7, U25

6010104060 IC DIG NC7SZ126 TINY UHS BUF 3-ST SOT23-5 1 U8

6010104070 IC MEM 512-Mbit (64M x 8 BITS) CMOS NAND FLASH 3.3V 1 U2

6010104080 IC MEM SDRAM 4 Meg x 32 TSOP-86 143MHz PB-FREE 1 U3

6010104090 IC ANA VREG LDO 1.5V 250mA SOT-23 1 U48

6010104100 IC CLOCK DRIVER 1-TO-5 CMOS SOIC8 1 U15

6010104110 DUAL MATCH N-CHAN PWR MOSFET 30V V(BR)DSS 4A I(D) 2 U42, U49

6010104120 IC MCU SH7705 133MHZ FP-208C 1 U1

6010104130 IC ANA VREG POS FIX 3-T LM340 5V 1A TO-263 1 U34

R10, R52-55, R64-67, R76-80, R85-88, R91-94, R97-100, R103-106, R109-112, R116, R117, R119, R120, R124, R125, R127, R128

R51, R58, R59, R68, R75, R81, R84, R89, R90, R95, R96, R101, R102, R107, R108, R113, R114, R121, R122, R129

Parts Lists

5-3

Parts Lists

Part No. Description Qty. Reference Designation

6010104140 IC IF DAC AK4358-VQ 8CHAN 24BIT 192kHz LQFP48 1 U33

6010104190 IC IF QUAD DIFF LVDS LINE DRIVER SOIC16 1 U55

6010104340 IC DIG 74HC14 HX SCHMITT INV TSSOP 4.4mm 1 U44

6010104350 IC DC-DC STEPDOWN PWM CONTROLLER 500KHz 1 U43

6100300120 XTL 16.6667MHz +/-50PPM FND PAR 10pF SMT 1 X2

6100300140 XTL 12.2880MHz +/-50PPM FND PAR 20pF SMT HC49SDLF 1 X3

6100900060 XTL OSC SMD 48.0000 MHz +/-50PPM CB3LV 1 Y1

627030001 BATTERY CR2032 3V 1 AT J20

Connector Board

Part No. Description Qty. Reference Designation

603010009 CAP CER X7R 1000pF 50V 10% 0603 23 C1-3, C6, C8-11, C14-22, C47, C57-61

603010014 CAP CER X7R 10000pF 50V 10% 0805 2 C65, C75

603010111 CAP CER X5R 10uf 10V 10% 0805 2 C64, C76

603010114 CAP CER NPO 33pF 50V 5% 0603 2 C4, C5

603010119 CAP CER Y5V 0.1uF 25V +20/-20% 0805 28

603020001 CAP ELC GP 1uF 50V 20% SZB SMT 1 C48

603020002 CAP ELC GP 10uF 16V 20% SZB SMT 3 C7, C23, C24

603080012 CAP ELC GP 100uF 16V 20% 0.25D 0.44H 0.098"SP RAD 5 C34, C36, C37, C39, C40

603080020 CAP ELC GP 1,000uF 25V 20% 0.49D 0.79H 0.197"SP RAD 2 C30, C31

603080089 CAP ELC LLM 10000uF 16V 20% 25D 25mmH SNAP 1 C55

608010004 DIODE SW GP SMT CYL LL4148 DL-35 17 D1-11, D13, D16, D19-20

6080100090 DIODE SHTKY SIG 5ns LO-C SL BAS40 SOT-23 1 D18

6080200080 DIODE ZEN .5W SMT MMSZ5234B 6.2V @ 20mA SOD-123 1 D14

608030002 DIODE RECT GP SMT 1A S1A 50V SMA 1N4001 1 D12

6080700100 DIODE BRDG 4A GBU404 400VR 1 D15

608070012 DIODE 1N5822 1 D17

6200100080 CON HDR SIP 0.156" SQR PIN LOK 5POS 1 J324

6200200120 CON 1/4” PHONE STEREO RA49C-14B 7 J310-314, J317-319, J322, J323

620020013 CON 1/8” MINI PHONE STEREO SW No Thread RA 1 J315

6200300050 CON DIN DL MIDI JACK 1 J320

6200400050 CON RCA R/A PC MT 2 J300, J309

6209900180 CON MOD JACK 6-PIN RA PC MOUNT 1 J316

628010084 CON HDR DIP 0.1" RIBON FL SHRD 20POS 3 J304, J306, J307

6280101020 CON HDR SIP 2.5mm SPOX FL SHRD 10POS 1 J303

6280101060 CON HDR SIP 2.5mm SPOX FL SHRD 5POS 1 J308

6280101070 CON HDR SIP 2.5mm SPOX FL SHRD 6POS 1 J325

6280101120 CON HDR SIP 2.5mm SPOX FL SHRD 8POS 1 J305

628010115 CON HDR SIP 0.156" SQR PIN LOK 8POS 1 J301

6280101180 CON HDR DIP 0.079" SQR PIN .157HD .102TL GLD 10POS 1 J321

6280101210 CON HDR SIP 2.5mm SPOX FL SHRD 12POS 1 J302

606010005 IND FE BD SMT 200mA 600 OHM @ 100MHz 0805 3 L1, L2, L3

6140000070 IND NET T-FIL 100pF -15dB @ 250-900 MHz EXCCET-101U 2 L4, L5

C12, C13, C29, C32, C33, C35, C38, C44-46, C49-54, C56, C62, C63, C66, C67, C69-74, C77

5-4

Parts Lists

Part No. Description Qty. Reference Designation

6090100180 TRN SIG GP NPN MMBT2222A 40V 0.5A SOT-23 4 Q2, Q4, Q5, Q6

6090100190 TRN SIG GP PNP MMBT2907A 40V 0.5A SOT-23 2 Q1, Q3

602010078 RES THICK FILM 220 OHM 5% 1/16W 0603 T&R 2 R100, R101

602010014 RES THICK FILM 1.0K OHM 5% 1/8W 0805 T&R 3 R87, R111, R148

602010019 RES THICK FILM 10K OHM 5% 1/8W 0805 T&R 25

602010022 RES THICK FILM 100K OHM 5% 1/8W 0805 T&R 8 R88-91, R119, R120, R153, R161

602010026 RES THICK FILM 1.0M OHM 5% 1/8W 0805 T&R 8 R11, R16, R71, R72, R92, R105, R113, R115

602010030 RES THICK FILM 11K OHM 5% 1/8W 0805 T&R 1 R109

602010048 RES THICK FILM 150 OHM 5% 1/16W 0603 T&R 1 R81

602010049 RES THICK FILM 1.5M OHM 5% 1/10W 0805 T&R 1 R63

602010051 RES THICK FILM 1.5K OHM 5% 1/8W 0805 T&R 2 R22, R82

602010072 RES THICK FILM 20K OHM 5% 1/8W 0805 T&R 1 R80

602010077 RES THICK FILM 220 OHM 5% 1/8W 0805 T&R 1 R6

602010081 RES THICK FILM 2.2K OHM 5% 1/8W 0805 T&R 3 R66, R110, R117

602010089 RES THICK FILM 2.4K OHM 5% 1/8W 0805 T&R 1 R114

602010094 RES THICK FILM 270 OHM 5% 1/8W 0805 T&R 2 R83, R106

602010096 RES THICK FILM 2.7K OHM 5% 1/8W 0805 T&R 2 R162, R163

602010107 RES THICK FILM 33 OHM 5% 1/8W 0805 T&R 2 R169, R174

602010113 RES THICK FILM 3.3K OHM 5% 1/8W 0805 T&R 1 R164

602010132 RES THICK FILM 39K OHM 5% 1/8W 0805 T&R 1 R108

602010183 RES THICK FILM 680K OHM 5% 1/8W 0805 T&R 3 R76, R78, R79

602010221 RES THICK FILM 200 OHM 1% 1/4W 1210 T&R 8 R151, R152, R155-160

602010237 RES THICK FILM 10 OHM 5% 1/2W 2010 T&R 1 R7

602010240 RES THICK FILM 47 OHM 5% 1/2W 2010 T&R 2 R28, R29

602010241 RES THICK FILM 56 OHM 5% 1/10W 0805 T&R 4 R93, R96, R99, R102

602010242 RES THICK FILM 75 OHM 5% 1/10W 0805 T&R 1 R4

602010244 RES THICK FILM 100 OHM 1% 1/10W 0805 T&R 7 R165-167, R170-173

602010245 RES THICK FILM 110 OHM 5% 1/16W 0603 T&R 12 R17, R20, R65, R68, R69, R73-75, R94, R95, R97, R98

602010258 RES THICK FILM 121K OHM 1% 1/10W 0805 T&R 1 R67

602010259 RES THICK FILM 165K OHM 1% 1/10W 0805 T&R 1 R64

602010260 RES THICK FILM 4.7M OHM 5% 1/10W 0805 T&R 1 R116

602010285 RES THICK FILM 110 OHM 5% 1/8W 0805 T&R 1 R5

6110100580 POT 10K RA KNURLED SHAFT W/POINTER 20mm 2 R107, R154

6020300260 RES NET QUAD ISO 100 OHM 5% 1/10W 9 RN1-8, RN15

6020300270 RES NET QUAD ISO 10K OHM 5% 1/10W 6 RN9-14

6210200070 SW SLIDE SPDT RA PC 2.5MMSP 1 SW1

6220000060 XFRMR AES/EBU ISOLATION 1 T1

6010100440 IC ANA CMPR LM339 QD V LO-PWR LO-OS SOP14-160 1 U4

6010100520 IC ANA OPAMP TL072 DL FET LO-NOIS GP SOP8-160 1 U8

6010100930 IC DIG 74HC541 OC BUS BUF 3-ST SOP20-200 1 U2

6010103070 IC DIG 74HC4051 8-CH ANADIG MUX SOP16-200 1 U11

6010103760 IC MCU M38869 10MHZ 60K FLASH ROM QFP 80 1 U1

6010103850 IC IF ASYNCH SAMPLE RATE CONVERTER TQFP48 1 U314

6010103920 IC IF QUAD DIFF LVDS LINE RECEIVER SOIC16 1 U316

6010103930 IC REAL TIME CLK W/XTAL SMT 1 U318

6010103940 IC ANA VREG LDO 1.8V 250mA SOT-23 1 U315

R1-3, R9, R10, R12, R13, R21, R23-26, R30, R31, R70, R77, R84-86, R103, R104, R112, R118, R149, R150

5-5

Parts Lists

Part No. Description Qty. Reference Designation

6010103950 IC ANA VREG LDO 3.3V 250mA SOT-23 1 U319

6010104000 IC DIG 74LS05 HX INV OC SOIC14-150 1 U5

6010104260 IC ANA VREG NEG FIX 3-T LM79M12 -12V -500mA TO-220 1 U313

6010200110 IC 6N138 DIP TYPE 1 U6

6010200720 IC ANA VREG POS FIX 3-T KA78T05 5V 3A TO-220 1 U308

6010200730 IC ANA VREG POS FIX 3-T LM78M12 12V 500mA TO-220 1 U312

6100300130 XTL 10.0000MHz +/-50PPM FND PAR 18pF SMT HC49SD 1 Y1

6100900050 XTL OSC SMD 24.5760 MHz +/-50PPM CB3LV 1 Y2

6100900070 XTL OSC SMD 22.5792 MHz +/-50PPM CB3LV 1 Y3

Front Panel Board

Part No. Description Qty. Reference Designation

603010119 CAP CER Y5V 0.1uF 25V +80/-20% 0805 5 C2, C3, C4, C5, C7

603020002 CAP ELC GP 10uF 16V 20% SZB SMT 1 C9

603070046 CAP CER SL/GP 33pF 3KV 5% 7mm H 7.5mm L RAD 1 C11

603080062 CAP ELC LOZ 470uF 6.3V 20% 8D 11.5H 3.5SP RAD 3 C1, C6, C8

603110056 CAP FLM PE 0.22uF 50V 5% 11L 6T 5mmSP RAD 1 C10

608010004 DIODE SW GP SMT CYL LL4148 DL-35 14 D101-112, D137, D138

6190100170 OPT LED SMT RED WATER CLEAR 120˚ VIEW 1206 (USA) 8 D3-6, D9-12

6190100200 OPT LED SMT BLUE WATER CLEAR 120˚ VIEW 1206 (USA) 10

6190100210 OPT LED SMT YEL WATER CLEAR 120˚ VIEW 1206 (USA) 15

6190100220 OPT LED SMT RED/GREEN WATER CLEAR (USA) 2 D7, D13

628010072 CON DIP HEADER .1"SP (2.54MM) 16POS 1 J201

628010084 CON HDR DIP 0.1" RIBON FL SHRD 20POS 1 J202

604020008 IND RAD POWER INDUCTOR 47uH 0.23 ohm 1A 1 L1

6010103970 TRN PWR MOSFET NDT3055 60V 0.12 OHM 4A SMD 1 Q19

6090100190 TRN SIG GP PNP MMBT2907A 40V 0.5A SOT-23 8 Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8

6090100200 TRN SIG GP NPN MMBT3904 40V 0.1A SOT-23 2 Q22, Q23

6090100210 TRN SIG GP NPN ZXTN25015DFH 15V 5A SOT-23 2 Q20, Q21

6090100220 TRN SIG GP PNP ZXTP25015DFH 15V 4A SOT-23 9 Q9-12, Q14-18

602010109 RES THICK FILM 330 OHM 5% 1/8W 0805 T&R 1 R31

602010228 RES THICK FILM 2.2K OHM 5% 1/8W 0805 T&R 8 R11-17, R26

602010236 RES THICK FILM 4.7 OHM 5% 1/4W 1210 T&R 1 R3

602010238 RES THICK FILM 15 OHM 5% 1/8W 1206 T&R 8 R2, R4, R5, R7, R9, R18, R22, R24

602010248 RES THICK FILM 750 OHM 1% 1/8W 0805 T&R 1 R32

602010252 RES THICK FILM 10K OHM 5% 1/10W 0805 T&R 3 R10, R27, R28

602010255 RES THICK FILM 20.0K OHM 1% 1/8W 0805 T&R 1 R30

602010266 RES THICK FILM 30K OHM 5% 1/10W 0805 T&R 1 R29

D14, D113, D116, D117, D119, D122, D125, D128, D131, D134

D114, D115, D118, D120, D121, D123, D124, D126, D127, D129, D130, D132, D133, D135, D136

5-6

Part No. Description Qty. Reference Designation

602010267 RES THICK FILM 4.7 OHM 5% 1/8W 1206 T&R 8 R1, R6, R8, R19, R20, R21, R23, R25

6020300270 RES NET QUAD ISO 10K OHM 5% 1/10W 5.08mm X 2.2mm 2 RN1, RN2

6110100570 ENCODER W/BUSH V-MNT GREASED 20mm FLAT SH 1 SP1

6210100290 SW TACT SPST 12mm x 12mm 130gf 4-PIN 65

6220000070 XFMR CCFT 2.5W 5VOLT PRI 1 T1

6010100830 IC DIG 74HC138 3-TO-8 LINE DEC SOP16-150 2 U2, U4

6010100910 IC DIG 74HC373 OC D-LATCH 3-ST SOP20-200 1 U3

6010100930 IC DIG 74HC541 OC BUS BUF 3-ST SOP20-200 1 U1

SW1, SW2, SW4-10, SW12-16, SW19-21, SW23, SW24, SW26-32, SW35-38,SW48, SW109-133

Slider Board

Part No. Description Qty. Reference Designation

628010072 CON HDR DIP 0.1" RIBON FL SHRD RA 16POS

6280101040 CON HDR SIP 2.5mm SPOX FL SHRD RA 4POS

6280101200 CON HDR SIP 2.5mm SPOX FL SHRD RA 8POS

6210100290 SW TACT SPST 12mm x 12mm 130gf 4-PIN

6110100460 RES SLID SL 10K LIN 45mm

603010020 CAP CER X7R 0.1uF 50V 10% 0805

6190100200 OPT LED SMT BLUE WATER CLEAR 120˚ VIEW 1206 (USA)

6190100220 OPT LED SMT RED/GREEN WATER CLEAR (USA)

6010103070 IC DIG 74HC4051 8-CH ANADIG MUX SOP16-200

J303

1

J304

1

J302

1

SW1-9

9

R1-10

10

C1

1

D10

1

D2, D3, D4, D5, D6, D7, D8, D9

8

U1

1

Parts Lists

Engine Board–USB/xD Daughtercard

Part No. Description Qty. Reference Designation

603010118 CAP CER X7R 0.1uF 16V 10% 0603 5 C1, C2, C3, C4, C5

619010001 OPT LED T1 BLUE DIFFUSED 2 D1, D2

620050001 CON USB TYPE B PCB MOUNT SL RA SHIELDED BLACK 1 J3

6209900160 CON xD-PICTURE CARD RA SMT 3.3V 1 J4

6280200040 CON SOCKET DIP 0.079" SP ELEVATED 28POS 1 J1

6090100180 TRN SIG GP NPN MMBT2222A 40V 0.5A SOT-23 1 Q1

6090100190 TRN SIG GP PNP MMBT2907A 40V 0.5A SOT-23 1 Q2

602010019 RES THICK FILM 10K OHM 5% 1/8W 0805 T&R 1 R1

602010070 RES THICK FILM 2.0K OHM 5% 1/8W 0805 T&R 2 R6, R8

602010113 RES THICK FILM 3.3K OHM 5% 1/8W 0805 T&R 2 R5, R7

602010166 RES THICK FILM 560 OHM 5% 1/8W 0805 T&R 1 R4

602010246 RES THICK FILM 150 OHM 5% 1/8W 1206 T&R 2 R2, R3

602030005 RES NET QUAD ISO 10K OHM 5% 1/16W 3.2mm X 1.6mm 2 RN1, RN2

6010103840 IC DIG 74LV245A OCT BUS XCEIVER 3-ST TSSOP 1 U1

5-7

Parts Lists

Button Board

Part No. Description Qty. Reference Designation

6280101190 CON HDR SIP 2.5mm SPOX FL SHRD RA 4POS 1 J301

6210100290 SW TACT SPST 4-PIN 2 SW134, SW135

6190100170 OPT LED SMT RED WATER CLEAR 120˚ VIEW 1206 (USA) 2 D139, D140

Wheels Assembly

Part No. Description Qty. Reference Designation

CABLE PITCH & MOD WHEEL 1

POT ROTARY 10K 2

BUSHING 8.0X26K2000 1

SPRING TORSION MUSIC WIRE 1

BRACKET PITCH & MOD WHEEL MOUNTING 1

PITCH & MOD WHEEL 1

CHEEK BLOCK 1

Keyboard Assembly

Part No. Description Qty. Reference Designation

PCB KEY CONTACT LOW BASS

PCB KEY CONTACT HIGH TREBLE

KEY CONTACT STRIP (12 NOTE)

KEY NATURAL A

KEY NATURAL B

KEY NATURAL C

KEY NATURAL D

KEY NATURAL E

KEY NATURAL F

KEY NATURAL G

KEY NATURAL LOW A

KEY NATURAL HIGH C

KEY SHARP

KEY SPRING

5-8

Miscellaneous

Part No. Description Qty. Reference Designation

207010017 KNOB SLIDER MASTER VOLUME BLK W/RED STRIPE 1

207010018 KNOB SLIDER BLK W/YELLOW STRIPE 9

6220000080 ASSY TRANSFORMER DMT-6-15 1

CABLE ENGINE TO CONNECTOR BD 8P 1

CABLE ENGINE TO CONNECTOR BD 12P 1

CABLE ENGINE TO CONNECTOR BD 6P 1

CABLE ENGINE TO CONNECTOR BD 10P 1

CABLE FRONT PANEL TO CONNECTOR BD 20P 1

CABLE KYBD (BASS & TREBLE) TO CONNECTOR BD 20P 2

CABLE SLIDER TO CONNECTOR BD 8P 1

CABLE SLIDER TO FRONT PANEL BD 16P 1

CABLE SLIDER TO BUTTON BD 4P 1

ENDCAP LEFT 1

ENDCAP RIGHT 1

KNOB ALPHA WHEEL 1

CAP BUTTON SW 16

CAP BUTTON SW/LED 41

CAP BUTTON LABELED 16

MODULE POWER ENTRY 1

Parts Lists

5-9

Parts Lists

5-10

Chapter 6 Schematics

Engine Board Assembly–SH7705 CPU and Memory (1 of 9) page 6-3

Engine Board Assembly–MARA 2 (2 of 9) page 6-4

Engine Board Assembly–MARA 1 (3 of 9) page 6-5

Engine Board Assembly–MARA Clocks, Delay Memory Interface (4 of 9) page 6-6

Engine Board Assembly–Sound ROM (5 of 9) page 6-7

Engine Board Assembly–ROM DIMMs, SmartMedia Interface, LCD, etc. (6 of 9) page 6-8

Engine Board Assembly–DAC, Main Outs (7 of 9) page 6-9

Engine Board Assembly–Aux and Headphone Outs (8 of 9) page 6-10

Engine Board Assembly–Mictors, CPLD, Power (9 of 9) page 6-11

Connector Board–M38869 Scanner (1 of 4) page 6-12

Connector Board–MIDI, Pedals, Ribbon, LCD Contrast (2 of 4) page 6-13

Connector Board–Power Supply, Audio (3 of 4) page 6-14

Connector Board–Sample Rate Converter (4 of 4) page 6-15

Front Panel Board–Front Panel Misc. Buttons And LEDs (1 of 2) page 6-16

Front Panel Board–Front Panel Bank & Program Buttons & LEDs (2 of 2) page 6-17

Slider Board page 6-18

Wheels Board–Wheels & AT page 6-19

Engine Board–USB/xD Daughtercard page 6-20

Description Page No.

Engine Board Assembly–SH7705 CPU and Memory (1 of 9)

Kurzweil PC3x Service Manual

Chapter 6

DSP_RES ET_SEL_Lsh. 9

J2

1 2 3 4 5

HEADER 5

0.1uF

C7

22pF

L2

R8 330

VCC15

600 OHM @ 100MHz

600

R10

CPU_TRS T_L

(8)

2

(GND)

(9)

4 6 8 10 12 14

5

VCC33

600 OHM @ 100MHz

Port D is input only, port J is output only

CPU_NMI_Lsh. 9

CPU_IRQ_5 _Lsh. 6,9

CPU_IRQ_3 _Lsh. 6

SMCIP_Lsh. 6 SMRDYsh. 6

DIM_WP _Lsh. 6

DIM_BUSY_Lsh. 6

SMPWR _Lsh. 6

SMCS_Lsh. 6

MUTE_Lsh. 7

SMW Psh. 6

M1_DACK _Ls h. 3,9 M1_DREQ _Lsh. 3,9 M2_DACK _Ls h. 2,9 M2_DREQ _Lsh. 2,9

ADC_AN3 ADC_AN2 ADC_AN1 ADC_AN0

SH_AVCC

VCC33

C57

C16

0.1uF

L3

RESET_L

R13

sh. 3,6,9

1.0K

R140R14

0

5

L1

FLRDY

PTM4_PU LED_2 LED_1

ENA_USB FLWP_ L FLCS_L

SCAN_TX D SCAN_RX D

MIDI_TXD MIDI_RXD

SH3_EXT AL2

SH3_XTA L2

SH3_EXT AL

SH3_XTA L

22

C21

0.1uF

ASEMD0_ L ASEBRKA K_L

CPU_TDO CPU_TRS T_L CPU_TMS CPU_TCK CPU_TDI

VCC33

R16

0

1 2

SH_AVCC

C1

0.1uF

192 190

IRQ4

189 188

IRQ2

187

IRQ1

186

IRQ0

185

169 137 136 135 134 131 129 128 127 126 125 124 123 122 171 108

IACK_L

MD3

MD1

BREQ_L

CA RESETM_ L

116 115 194 114 193

203 202 201 200

181 176 175 174 179

173 172 177

6

9

8

7

152 149

151 150

155

154

R15

160

11 153 198 197 148 147 146

110 109

158 157

196 183 195

170 121 120 119 118 117 191

145 144

143 142 141 140 139

J36

DNS

Install jumper for Lauterbach debugger when in debug mode.

HEADER2

VCC15 V CC33

204

132

VCC28VCC80VCC

AVCC

interrupts

NMI 1RQ5/PTE2 IRQ4/PTH4 IRQ3/IRL3/PTH3 IRQ2/IRL2/PTH2 IRQ1/IRL1/PTH1 IRQ0/IRL0/PTH0

gpio

PTN7 PTM3 PTM2 PTM1 PTM0 NF/PTM4 NF/PTJ7 NF/PTJ6 NF/PTJ5 NF/PTJ4 NF/PTJ3 NF/PTJ2 NF/PTJ1 NF/PTJ0 PTE7 PTD5/NF

dma

TEND0/PTE3 DACK1/PTE1 DREQ1/PTH6 DACK0/PTE0 DREQ0/PTH5

adc

AN3/PTL3 AN2/PTL2 AN1/PTL1 AN0/PTL0

uart

CTS2/SCPT5 RTS2/SCPT4 SCK2/SCPT3 TxD2/SCPT2 RxD2/SCPT2

SCK0/SCPT1 TxD0/SCPT0/IrTX RxD0/SCPT0/IrRX

rtc

VCC_RTC

VSS_RTC

EXTAL2

XTAL2

system clocks

VCC_PLL2 VCC_PLL1

VSS_PLL2 VSS_PLL1

EXTAL

XTAL

CKIO

system control

MD6 MD5 MD4 MD3 MD2 MD1 MD0

BREQ/PTG6 BACK/PTG5

STATUS1/PTE5/CTS0 STATUS0/PTE4/RTS0

CA RESETM RESETP

debug/timer

TCLK/PTE6 AUDATA3/PTF3/TO3 AUDATA2/PTF2/TO AUDATA1/PTF1/TO1 AUDATA0/PTF0/TO0 AUDSYNC/PTF4 AUDCK/PTG4

ASEMD0/PTF7 ASEBRKAK/PTF6

jtag

TDO/PTF5 TRST/PTG3 TMS/PTG2 TCK/PTG1 TDI/PTG0

AVSS

VSS26VSS78VSS

VSS

199

130

182

CPU

184

VCC

VCCQ19VCCQ34VCCQ46VCCQ59VCCQ71VCCQ89VCCQ

SH7705

WE3/DQMUU/AH/PTC2

2

VSSQ1VSSQ17VSSQ32VSSQ44VSSQ52VSSQ57VSSQ69VSSQ87VSSQ

113

138

161

178

VCCQ

address bus

A25/PTK7 A24/PTK6 A23/PTK5 A22/PTK4 A21/PTK3 A20/PTK2 A19/PTK1

A0/PTK0

data bus

D31/PTB7/PINT15 D30/PTB6/PINT14 D29/PTB5/PINT13 D28/PTB4/PINT12 D27/PTB3/PINT11 D26/PTB2/PINT10

D25/PTB1/PINT9 D24/PTB0/PINT8 D23/PTA7/PINT7 D22/PTA6/PINT6 D21/PTA5/PINT5 D20/PTA4/PINT4 D19/PTA3/PINT3 D18/PTA2/PINT2 D17/PTA1/PINT1 D16/PTA0/PINT0

bus control

CKE/PTD4

CASU/PTD3

CASL/PTD2

RASU/PTD1

RASL/PTD0

WE2/DQMUL/PTC1

WE1/DQMLU

WE0/DQMLL

RD/WR

CS6B/PTD7 CS6A/PTC7 CS5B/PTD6 CS5A/PTC6

CS4/PTC5 CS3/PTC4 CS2/PTC3

WAIT/PTG7

BS/PTC0

usb

PTN6/DPLS

PTN5/DMNS

PTN4/TXDPLS

PTN3/TXDMNS

PTN2/XVDATA

PTN1/TXENL

PTN0/SUSPND

VBUS/PTM6

EXTAL_USB

XTAL_USB

VCC_USB

VSS_USB

VSSQ

105

111

133

156

159

VCC33

RN1

10K

RN4

10K

RN3

10K

RN5

10K

RN2

RN6

CPU_NMI_L

8

CPU_IRQ_5 _L

7

CPU_IRQ_3 _L

6

DSP_RES ET_SEL_L

5

IRQ4

1

IRQ2

2

IRQ1

3

IRQ0

4

IACK_L

8

FLCS_L

7

SMCS_L

6

SMPWR _L

5

MUTE_L

8

CPU_WAI T_L

7

CPU_A_2 4

6

ENA_USB

5

BREQ_L

8

M2_DACK _L

7

M1_DACK _L

6

MD1

5

MD3

1

CA

2

M1_DREQ _L

3

M2_DREQ _L

4

1 2 3 4

VCC33

8 7 6 5

D D

VCC33

1 2 3 4

VCC33

1 2 3 4

VCC33

1 2 3 4

VCC33

8 7 6 5

DNS

C C

X1

C6

32.7680k Hz

22pFC622pF

VCC15

+

C69

22uF

X2

16.6667M Hz

C17

33pF

B B

SDRAM_C LKsh. 9

sh. 6,9

RESET

VCC33

RN9

1 2 3 4

4.7K

VCC33

RN10

1 2 3 4

A A

4.7K

JTAG/BDM PORT

CPU_TCK

CPU_TRS T_L

CPU_TDO

ASEBRKA K_EM_L

CPU_TMS CPU_TDI RESET_L

600 OHM @ 100MHz

C18

33pF

VCC33

U9A

147

1 2

74VHC05

RESETM_ L

8

CPU_TCK

7

CPU_TDO

6

ASEBRKA K_L

5

ASEBRKA K_EM_L

PTM4_PU

8

CPU_TDI

7

ASEMD0_ L

6

CPU_TMS

5

J6

(1)

1

(2)

3 5 7 9

11

(7)

13

HEADER 7X 2

4.75K

(14)

4

3

2

1

SDRAM BOOT EPROM

22

R154

8 7 6 5

22

8 7 6 5 5 6 7 8

22

33

L4

CPU_A_[25 :0]

CPU_D_[31 :0]

SDRAM_C KE

SDRAM_C AS_L sh. 9

SDRAM_R AS_L sh. 9

SDRAM_D QM_3

SDRAM_D QM_2 SDRAM_D QM_1 SDRAM_D QM_0

CPU_W R_L sh. 4,9 CPU_RD_ L sh. 6,9

LCD_CS_ L sh. 6,9 UART_CS _L sh . 6,9 SMARTMEDI A_CS_L sh. 9 FLASH_C S_L sh. 9 MARA_1_ SEL_L sh. 9 SDRAM_C S_L sh. 9 MARA_2_ SEL_L sh. 9 BOOT_CS _L sh. 9

CPU_BS_ L sh. 9

DAC_CSN sh. 7 DAC_CCL K sh. 7 DAC_CDT I sh. 7 DAC_PDN sh. 7

VCC33

C8

0.1uF

CPU_WAI T_L sh. 2,3 ,9

USB_D+ USB_D-

Y1

3

OUT

48.0000 M Hz

CPU_A_1 3 CPU_A_1 2 CPU_A_1 1 CPU_A_1 0 CPU_A_9 CPU_A_8 CPU_A_7 CPU_A_6 CPU_A_5 CPU_A_4 CPU_A_3 CPU_A_2

CPU_A_1 5 CPU_A_1 4

SDRAM_D QM_3 SDRAM_D QM_2 SDRAM_D QM_1 SDRAM_D QM_0

SDRAM_C AS_L

SDRAM_R AS_L

CPU_W R_L

SDRAM_C S_L

SDRAM_C KE

SDRAM_C LK

C9

0.1uF

U7A

NC7WZ08

C25

0.1uF

4

VCC33

EN

GND

2

VCC33 VCC33

21

A11

24

A10

66

A9

65

A8

64

A7

63

A6

62

A5

61

A4

60

A3

27

A2

26

A1

25

A0

23

BA1

22

BA0

59

DQM3

28

DQM2

71

DQM1

16

DQM0

18

CAS

19

RAS

17

WE

20

CS

67

CKE

68

CLK

C10

0.1uF

ENA_USB

VCC33

7

L7

600 OHM @ 100MHz

VCC33

1

43

VDD1VDD15VDD29VDD

VDDQ3VDDQ9VDDQ35VDDQ41VDDQ49VDDQ55VDDQ75VDDQ

MT48LC4M 32B2P-7F

VSS44VSS58VSS72VSS86VSSQ6VSSQ12VSSQ32VSSQ38VSSQ46VSSQ52VSSQ78VSSQ

C12

C11

0.1uF

C22

0.1uF

8

1

2

4

C23

0.1uF

VCC33

R17

10K

C13

0.1uF

R12

3.01K

3

DQ31 DQ30 QD29 DQ28 DQ27 DQ26 DQ25 DQ24 DQ23 DQ22 DQ21 DQ20 DQ19 DQ18 DQ17 DQ16 DQ15 DQ14 DQ13 DQ12 DQ11 DQ10

DQ9 DQ8 DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0

C14

0.1uF

81

U3

CPU_D_3 1

56

CPU_D_3 0

54

CPU_D_2 9

53

CPU_D_2 8

51

CPU_D_2 7

50

CPU_D_2 6

48

CPU_D_2 5

47

CPU_D_2 4

45

CPU_D_2 3

42

CPU_D_2 2

40

CPU_D_2 1

39

CPU_D_2 0

37

CPU_D_1 9

36

CPU_D_1 8

34

CPU_D_1 7

33

CPU_D_1 6

31

CPU_D_1 5

85

CPU_D_1 4

83

CPU_D_1 3

82

CPU_D_1 2

80

CPU_D_1 1

79

CPU_D_1 0

77

CPU_D_9

76

CPU_D_8

74

CPU_D_7

13

CPU_D_6

11

CPU_D_5

10

CPU_D_4

8

CPU_D_3

7

CPU_D_2

5

CPU_D_1

4

CPU_D_0

2

84

C15

C59

0.1uF

VCC33

53

2 4

R9

2.10K

USB_VBU S

VCC33

+

C156

100uF

VCC15

C63

0.1uF

1

U8

NC7SZ12 6

C26

0.1uF

C38

0.1uF

R2

10K

BOOT_CS _L

C19

0.1uF

R11

1.5K

C27

0.1uF

C39

0.1uF

CPU_A_1 7 CPU_A_1 6 CPU_A_1 5 CPU_A_1 4 CPU_A_1 3 CPU_A_1 2 CPU_A_1 1 CPU_A_1 0

CPU_A_9 CPU_A_8 CPU_A_7 CPU_A_6 CPU_A_5 CPU_A_4 CPU_A_3 CPU_A_2 CPU_A_1 CPU_A_0

USB

J4

1

VBUS

2

D+

3

D-

4

GND

HEADER4

USB_VBU S sh. 6

USB_D+ sh. 6 USB_D- sh. 6

C28

0.1uF

C40

0.1uF

VCC

1

32

U4

30

2

3 29 28

4 25 23 26 27

5

6

7

8

9 10 11 12

31 24 22

A17 A16 A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

PGM OE CE

VPP

VCC

DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0

GND

AT27LV0 20A

16

PROM_D_ 7 PROM_D_ 6 PROM_D_ 5 PROM_D_ 4 PROM_D_ 3 PROM_D_ 2 PROM_D_ 1 PROM_D_ 0

21 20 19 18 17 15 14 13

11 13 15 17

19

74LCX24 4

DNS

SH7705 BYPASS CAPS

C30

0.1uF

C31

0.1uF

C29

0.1uF

C41

0.1uF

DNS

J1

3 2 1

HEADER3

C2

0.1uF

PLCC32 Socket

PROM_D_ 7 PROM_D_ 6 PROM_D_ 5 PROM_D_ 4 PROM_D_ 3 PROM_D_ 2 PROM_D_ 1 PROM_D_ 0

U5

2

A1

Y1

4

A2

Y2

6

A3

Y3

8

A4

Y4

A5

Y5

A6

Y6

A7

Y7

A8

Y8

1

1OE 2OE

C32

0.1uF

2

C5

0.1uF

C33

0.1uF

VCC33

C4

C3

0.1uFC40.1uF

U2

37

CPU_A_2

16

CLE

CPU_A_3

FLRD_Lsh. 9 FLWR_ Lsh. 9

FLWP_ L

FLCS_L

CPU_D_7

18

CPU_D_6

16

CPU_D_5

14

CPU_D_4

12

CPU_D_3

9

CPU_D_2

7

CPU_D_1

5

CPU_D_0

3

VCC33

C20

0.1uF

C36

C35

C34

0.1uF

VCC3312VCC33

17

ALE

8

RE

18

WE

19

WP

9

CE

GND13GND

36

J35

HEADER2

CPU_NMI _L is open -drain IACK_L to CPU Por t I/O

Young C ha ng R&D In stitute

1432 Main St.

1432 Main St. Waltham MA 02451

Waltham MA 02451

W USA

USA

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

Title

PC3 ENGINE BOARD ASSEMBLY

PC3 ENGINE BOARD

SH7705 CPU a nd Memory

Size Doc ument Number Rev

By

Size Doc ument Number Rev

By

Size Doc ument Number Rev

Date: Sheet

Date: Sheet of

0.1uFC30.1uF

CPU_D_7

44

I/O_7 I/O_6 I/O_5 I/O_4 I/O_3 I/O_2 I/O_1 I/O_0

43 42 41 32 31 30 29

7

R/B

NAND51 2W3A2BN

CPU_D_6 CPU_D_5 CPU_D_4 CPU_D_3 CPU_D_2 CPU_D_1 CPU_D_0

DNS

LED_2

1

LED_1

2

LCD_CON Tsh. 6

+VBATsh. 9

R. Folk

Monday, Decembe r 03, 2007

December 03, 200 7

1

MIDI_RXD

MIDI_TXD CPU_NMI_L IACK_L SCAN_RX D SCAN_TX D

U1

208

VCCQ

CPU_A_2 5

84

CPU_A_2 4

83

CPU_A_2 3

82

CPU_A_2 2

81

CPU_A_2 1

79

CPU_A_2 0

77

CPU_A_1 9

76

CPU_A_1 8

75

A18

CPU_A_1 7

74

A17

CPU_A_1 6

73

A16

CPU_A_1 5

72

A15

CPU_A_1 4

70

A14

CPU_A_1 3

68

A13

CPU_A_1 2

67

A12

CPU_A_1 1

66

A11

CPU_A_1 0

65

A10

CPU_A_9

64

A9

CPU_A_8

63

A8

CPU_A_7

62

A7

CPU_A_6

61

A6

CPU_A_5

60

A5

CPU_A_4

58

A4

CPU_A_3

56

A3

CPU_A_2

55

A2

CPU_A_1

54

A1

CPU_A_0

53

CPU_D_3 1

12

CPU_D_3 0

13

CPU_D_2 9

14

CPU_D_2 8

15

CPU_D_2 7

16

CPU_D_2 6

18

CPU_D_2 5

20

CPU_D_2 4

21

CPU_D_2 3

22

CPU_D_2 2

23

CPU_D_2 1

24

CPU_D_2 0

25

CPU_D_1 9

27

CPU_D_1 8

29

CPU_D_1 7

30

CPU_D_1 6

31

CPU_D_1 5

33

D15

CPU_D_1 4

35

D14

CPU_D_1 3

36

D13

CPU_D_1 2

37

D12

CPU_D_1 1

38

D11

CPU_D_1 0

39

D10

CPU_D_9

40

D9

CPU_D_8

41

D8

CPU_D_7

42

D7

CPU_D_6

43

D6

CPU_D_5

45

D5

CPU_D_4

47

D4

CPU_D_3

48

D3

CPU_D_2

49

D2

CPU_D_1

50

D1

CPU_D_0

51

D0

R155

C37

0.1uF

4

RN30 1 2 3 4

RN37 1 2 3 4

RN38 1 2 3 4 4 3 2 1

RN39

33

JMPR_2 JMPR_1

VBUS

600 OHM @ 100MHz

107 106 104 103 102

92 91 90 88 93 86

RD

101 100 99 98 97 96 95 94

CS0

112 85

3

D+

4

D-

168 167 166 165

164 163 162 10

206

207

2

5

VSSQ

180

205

CPU_A_[25 :0] sh. 2,3,6,9

CPU_D_[31 :0] sh. 2,3,6,9

VCC33

R3

1.0K

FLRDY

VCC33VCC33

R1

1.0K

D1 AP3216S URCK

J3

1 3

HEADER 2X 2

R4

1.0K

D2 AP3216S URCK

VCC33

R7

R6

10K

2 4

JMPR_2 JMPR_1

TO CONNECTOR BOARD

J5

1

MIDI_RxD

2

CONT

3

MIDI_TxD

4

/IRQ

5

/IACK

6

INT_RxD

7

INT_TxD

8

DIG_OUT

9

GND

10

+VBAT

HEADER1 0

MIDI & CPU

021304 R EVC RCV2

1 9

of

.

6-3

Kurzweil PC3x Service Manual

C43

C42

0.1uF

D D

C C

B B

VCC18

R177

MARA2_V DDAN

10

A A

M2_CLK12_2 88_INsh. 4

DSP_RES ET_Lsh. 3 ,9

VCC33

+

C83

22uF

5

C45

C44

0.1uF

CPU_A_[25 :0]sh. 1,3,6,9

CPU_D_[31 :0]sh. 1,3,6,9

M2_SMCH_ OUT_[3:0]

M2_SMCH_IN _[3:0]

C278

C84

DNS

10uf

0.1uF

R73 0

DNS

R19

22

DNS

5

C46

0.1uF

MARA_2_ CS_Lsh. 9 MARA_ WR_Lsh. 3,4

CPU_WAI T_Lsh. 1,3,9

M2_DREQ _Lsh. 1,9

M2_DACK _Lsh. 1 ,9

M2_GTOPsh. 3

C285

0.1uF

M2_REFC LK_OUT

C48

C47

0.1uF

M2_SMCH _OUT_3 M2_SMCH _OUT_2 M2_SMCH _OUT_1 M2_SMCH _OUT_0

M2_SMCH_I N_3 M2_SMCH_I N_2 M2_SMCH_I N_1 M2_SMCH_I N_0

DNSDNS

R173 10K

CPU_A_1 6 CPU_A_1 5 CPU_A_1 4 CPU_A_1 3 CPU_A_1 2 CPU_A_1 1 CPU_A_1 0 CPU_A_9 CPU_A_8 CPU_A_7 CPU_A_6 CPU_A_5 CPU_A_4 CPU_A_3 CPU_A_2 CPU_A_1 CPU_A_0

CPU_D_3 1 CPU_D_3 0 CPU_D_2 9 CPU_D_2 8 CPU_D_2 7 CPU_D_2 6 CPU_D_2 5 CPU_D_2 4 CPU_D_2 3 CPU_D_2 2 CPU_D_2 1 CPU_D_2 0 CPU_D_1 9 CPU_D_1 8 CPU_D_1 7 CPU_D_1 6 CPU_D_1 5 CPU_D_1 4 CPU_D_1 3 CPU_D_1 2 CPU_D_1 1 CPU_D_1 0 CPU_D_9 CPU_D_8 CPU_D_7 CPU_D_6 CPU_D_5 CPU_D_4 CPU_D_3 CPU_D_2 CPU_D_1 CPU_D_0

VCC33

R18

10K

R69 0 R70 0 R71 0

C49

0.1uF

C50

0.1uF

AF16 AE15 AF15 AE14 AF14 AF13 AE13 AF12 AE12 AF11 AE11

AE2 AF1 AE1 AD2 AD1 AC2

AA1 AC1 AB2

AB1 AA2

AF20 AE19 AF19 AE18 AF18 AE17 AF17 AE16

AD25 AE26 AE25 AF26 AE24 AF25 AF24 AE23

AE20 AF21 AE21 AF22 AE22 AF23

AB26 AB25 AC26 AC25

Y26

Y25 AA26 AA25

AF10

AE4

AF3

AF4

AE5

AF5 AE10

AE9

AE8

AF6

M2 M1

L1 L2 K1 K2 J1

J2 H1 H2 G1 G2

F1

F2

E1

E2

Y2

Y1

W2 W1

V2

V1 U2 U1

T2

T1 R2 R1

P2

P1 N2 N1

C52

C51

0.1uF

MARA 2

cpu address

A_16 A_15 A_14 A_13 A_12 A_11 A_10 A_9 A_8 A_7 A_6 A_5 A_4 A_3 A_2 A_1 A_0

cpu data

DHI_15 DHI_14 DHI_13 DHI_12 DHI_11 DHI_10 DHI_9 DHI_8 DHI_7 DHI_6 DHI_5 DHI_4 DHI_3 DHI_2 DHI_1 DHI_0 DLO_15 DLO_14 DLO_13 DLO_12 DLO_11 DLO_10 DLO_9 DLO_8 DLO_7 DLO_6 DLO_5 DLO_4 DLO_3 DLO_2 DLO_1 DLO_0

cpu control

CE_L WR_L READY/DTACK_L

DREQ_L DACK_L

standard audio

SD_OUT_7 SD_OUT_6 SD_OUT_5 SD_OUT_4 SD_OUT_3 SD_OUT_2 SD_OUT_1 SD_OUT_0

SD_IN_7 SD_IN_6 SD_IN_5 SD_IN_4 SD_IN_3 SD_IN_2 SD_IN_1 SD_IN_0

I8S_SCLK I8S_SYNC I2S_SCLK I2S_SYNC LJ_SCLK LJ_SYNC

hi speed audio

SMOOCH_OUT_3 SMOOCH_OUT_2 SMOOCH_OUT_1 SMOOCH_OUT_0

SMOOCH_IN_3 SMOOCH_IN_2 SMOOCH_IN_1 SMOOCH_IN_0

GTOP

VDDAN

VSSAN

PLL_BYPASS PLL_TST_1 PLL_TST_0 TST_CLK_OUT

system

CLK REFCLK_OUT

RESET_L

Engine Board Assembly–MARA 2 (2 of 9)

4

VCC25VCC33 VCC18VCC33 VCC25 VCC18 VCC18

+

C53

0.1uF

C54 100uF

VCC33 VCC18VCC25

AA3

AA4

AB3

AB4

AC3

AC9

AC10

VCC33

+

C55

C56

22uF

AC14

AC15

AC16

AC20

AC21

AC22

AC23

AC24

AD9

AD10

AD14

AD15

AD16

AD20

AD21

AD22

AD23

AD24

AD26

C24

D23

D24

E23

E24

F23

VCC33

VCC33D3VCC33

VCC33

VCC33E3VCC33E4VCC33

VCC33

VCC33F3VCC33F4VCC33

MARA 2 DECOUPLING CAPS

C61

C60

0.1uF

F24

G23

G24

H23

VCC33

C62

0.1uF

H24

M23

M24

P23

P24

VCC33

VCC33K3VCC33K4VCC33

VCC33

VCC33P3VCC33P4VCC33

VCC33

MARA

dma

pll

GND

AB24

AB23

GND

GNDG3GNDG4GNDJ3GNDJ4GND

GND

GNDL3GNDL4GND

GND

GNDN3GNDN4GND

GND

GNDU3GNDU4GNDW3GND

J23

J24

C23

AD3

AC8

AC4

AC11

AC13

AC17

AC19

4

D22

AD8

AD11

AD13

AD17

AD19

L16

N11

N16

M11

M16

T11

T12

P11

P16

T13

R11

R16

R23

R24

W4

T14

T15

T16

VCC33R3VCC33R4VCC33T3VCC33T4VCC33

U10

GNDC3GNDD4GND

L11

C66

0.1uF

T23

M12

3

C68

C67

0.1uF

T24

U23

U24

V23

V24

Y4

VCC33

VCC33Y3VCC33

GND

N12

N13

N14

N15

M13

N23

M14

M15

3

+

C70 22uF

C11

C13

C15

C19

D11

VCC25C4VCC25C5VCC25

VCC25

VCC25D5VCC25

GND

5

P12

P13

P14

P1

N24

R12

R13

R14

C71

C72

D16

VCC25

C20

0.1uF

AA23

AA24

VCC18

GNDD6GNDD7GNDD8GND

C73

0.1uF

AC7

AC12

AC5

AC6

VCC18

GND

L12

L13

L14

D20

0.1uF

D13

D15

D19

C14

C16

D14

VCC25

VCC25C9VCC25

VCC25

VCC25D9VCC25

GND

GNDD1GNDC6GNDC7GNDC8GND

R15

W23

W24

C75

C74

0.1uF

AD7

AD12

AD18

C21

C22

AC18

AD4

AD5

VCC18

GND

L15

C10

D21

AD6

VCC18

GND

C17

D10

D17

C76

0.1uF

H3

2

+

C12

Y23

Y24

VCC18

+

C79 100uF

VCC18_ISO _M2

C18

D12

D18

VCC18

ROM_CS_1/WE_ODD_L

ROM_CS_0/QSA_EVN_L

C80 22uF

C277

10uf

rom address

ROM_A_26 ROM_A_25 ROM_A_24 ROM_A_23 ROM_A_22 ROM_A_21 ROM_A_20 ROM_A_19 ROM_A_18 ROM_A_17 ROM_A_16 ROM_A_15 ROM_A_14 ROM_A_13 ROM_A_12 ROM_A_11 ROM_A_10

ROM_A_9 ROM_A_8 ROM_A_7 ROM_A_6 ROM_A_5 ROM_A_4 ROM_A_3 ROM_A_2 ROM_A_1 ROM_A_0

rom data

ROM_D_15 ROM_D_14 ROM_D_13 ROM_D_12 ROM_D_11 ROM_D_10

ROM_D_9 ROM_D_8 ROM_D_7 ROM_D_6

ROM_D_5 CFG_4/ROM_D_4 CFG_3/ROM_D_3 CFG_2/ROM_D_2 CFG_1/ROM_D_1 CFG_0/ROM_D_0

rom control

ROM_WE_EVN_L

ROM_OE_L

ddr sdram address

DDR_BA_1 DDR_BA_0

DDR_A_12 DDR_A_11 DDR_A_10

DDR_A_9 DDR_A_8 DDR_A_7 DDR_A_6 DDR_A_5 DDR_A_4 DDR_A_3 DDR_A_2 DDR_A_1 DDR_A_0

ddr sdram data

DDR_D_15 DDR_D_14 DDR_D_13 DDR_D_12 DDR_D_11 DDR_D_10

DDR_D_9

DDR_D_8

DDR_D_7

DDR_D_6

DDR_D_5

DDR_D_4

DDR_D_3

DDR_D_2

DDR_D_1

DDR_D_0

ddr sdram control

DDR_DQS_3 DDR_DQS_2 DDR_DQS_1 DDR_DQS_0 DDR_CAS_L DDR_RAS_L

DDR_WE_L

DDR_CLK_H

DDR_CLK_L

DDR_CKE

VREF

jtag

TDO

TCK TMS

TRST_L

internal scan

TEST_MODE

SCANENABLE

C274

0.1uF

TDI

C77

C78

0.1uF

M4

L24

L23

K24

K23

VCC18V3VCC18V4VCC18

VCC18M3VCC18

VCC18

VCC18H4VCC18

MARA

2

B20 A21 B21 A22 B22 A23 B23 A24 B24 A25 B25 A26 B26 C25 C26 D25 D26 E25 E26 F25 F26 G25 G26 H25 H26 J25 J26

M25 M26 N25 N26 P25 P26 R26 R25 T26 T25 U26 U25 V26 V25 W26 W25

L25 K26 L26 K25

B11 A11

B12 A12 B13 A13 A14 B14 A15 B15 A16 B16 A17 B17 A18

C1 C2 B1 B2 A1 B3 A2 A3 B6 A6 B7 A7 B8 A8 B9 A9

B4 A4 B5 A5 A10 A20 B19

A19 B18 B10

D2

AE7 AF9 AF7 AE3 AF8

AE6 AF2

C81

1uf 080

C275

0.1uF

C82

1uf

0805

5

C276

0.1uF

M2_ROM_ A_26 M2_ROM_ A_25 M2_ROM_ A_24 M2_ROM_ A_23 M2_ROM_ A_22 M2_ROM_ A_21 M2_ROM_ A_20 M2_ROM_ A_19 M2_ROM_ A_18 M2_ROM_ A_17 M2_ROM_ A_16 M2_ROM_ A_15 M2_ROM_ A_14 M2_ROM_ A_13 M2_ROM_ A_12 M2_ROM_ A_11 M2_ROM_ A_10 M2_ROM_ A_9 M2_ROM_ A_8 M2_ROM_ A_7 M2_ROM_ A_6 M2_ROM_ A_5 M2_ROM_ A_4 M2_ROM_ A_3 M2_ROM_ A_2 M2_ROM_ A_1 M2_ROM_ A_0

M2_ROM_ D_15 M2_ROM_ D_14 M2_ROM_ D_13 M2_ROM_ D_12 M2_ROM_ D_11 M2_ROM_ D_10 M2_ROM_ D_9 M2_ROM_ D_8 M2_ROM_ D_7 M2_ROM_ D_6 M2_ROM_ D_5 M2_ROM_ D_4 M2_ROM_ D_3 M2_ROM_ D_2 M2_ROM_ D_1 M2_ROM_ D_0

RN11 1 2 3 4

10K

M2_TDO M2_TDI M2_TCK M2_TMS M2_TRST _L

VCC18

L18

600 OHM @ 100MHz

8

M2_ROM _WE_EVN_L sh. 5

7 6 5

22

M1_SMCH_I N_3sh. 3

M1_SMCH_I N_2sh. 3

M1_SMCH_I N_1sh. 3

M1_SMCH_I N_0sh. 3

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

1 2 3 4

M2_ROM _WE_ODD_L sh. 5

M2_ROM_ QSA_EVN_L

M2_ROM_ OE_L sh. 5

M1_SMCH _OUT_3sh. 3

M1_SMCH _OUT_2sh. 3

M1_SMCH _OUT_1sh. 3

M1_SMCH _OUT_0sh. 3

VCC25

RN12

8 7 6 5

RN13

8 7 6 5

RN14

8 7 6 5

RN15

8 7 6 5

RN16

8 7

HEADER_ POST

6 5

RN17

8 7 6 5

HEADER_ POST

Young Chang R&D Institute

1432 Main St. Waltham MA 0245 1 USA

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

Title

PC3 ENGI NE BOARD ASSEM BLY

MARA 2

Size Doc ument Number Rev

By

R. Folk

Date: Sheet of

Monday, Decemb er 03, 2007

1

M2_ROM_A _[26:0] sh. 5

Do Not Stuff

M2_ROM_ D_4 M2_ROM_ D_3

R141 10K

DNS

M2_ROM_D _[15:0] sh. 5

J7

1 2 3 4 5 6 7 8

VCC33

M2_TDI M2_TRST _L M2_TMS M2_TCK

RN36 1 2 3 4

10K

DNS

1 3 5 7

HEADER_ 4X2_SMT

021304 R EVC

2 9

M2_ROM_ D_4 M2_ROM_ D_3 M2_ROM_ D_2 M2_ROM_ D_0

M2_ROM_D_1 is Don't Care on Power Up

M1_GTOPsh. 3

HEADER 8

M1_SMCH _OUT_3sh. 3

3

M1_SMCH _OUT_2sh.

M1_SMCH _OUT_1sh. 3

M1_SMCH _OUT_0sh. 3

M2_SMCH _OUT_3

M2_SMCH _OUT_2

M2_SMCH _OUT_1

M2_SMCH _OUT_0

DNS

TP16

M2_TDI

1

TP17

DNS

1

R142 10K

DNS

VCC33

8 7 6 5

M2_GTOP s h. 3

M2_SMCH_I N_3

M2_SMCH_I N_2

M2_SMCH_I N_1

M2_SMCH_I N_0

M1_SMCH_I N_3 sh. 3

M1_SMCH_I N_2 sh. 3

M1_SMCH_I N_1 sh. 3

M1_SMCH_I N_0 sh. 3

J30

DNS

M2_TDO

2

M2_TRST _L

4

M2_TMS

6

M2_TCK

8

RN33

1

8

2

7

3

6

4

5

10K

VCC33

RCV2

6-4

Engine Board Assembly–MARA 1 (3 of 9)

5

C85

C86

0.1uF

D D

VCC33

C C

B B

RESET_L

sh. 1,6,9

M1_I2S_BITC LKsh. 7 M1_I2S_SYNCsh. 7

HEADER_POST

VCC18

A A

RN19 1 2 3 4

10K

VCC33

RN18 1 2 3 4

10K

M1_SD_OU T_[3:0]sh. 7

DNS

M1_SD_O UT_7 M1_SD_O UT_6 M1_SD_O UT_5 M1_SD_O UT_4 M1_SD_O UT_3 M1_SD_O UT_2 M1_SD_O UT_1 M1_SD_O UT_0

M1_SMCH_ OUT_[3:0]sh. 2

M1_SMCH_IN _[3:0]sh. 2

DNS

TP15

R178

MARA1_V DDAN

10

M1_CLK12_2 88_INsh. 4

DSP_RES ET_Ls h. 2,9

1

+

10 12 14 16 18 20

C126

22uF

8 7 6 5

J9

2 4 6 8

C87

0.1uF

M1_SD_IN_ 7 M1_SD_IN_ 6 M1_SD_IN_ 5 M1_SD_IN_ 4

M1_SD_IN_ 3 M1_SD_IN_ 2 M1_SD_IN_ 1 M1_SD_IN_ 0

M1_DREQ _Lsh. 1,9 M1_DACK _Lsh. 1 ,9

HEADER 10 X2

1 3 5 7 9 11 13 15 17 19

VCC33

C279

DNS

10uf

C88

0.1uF

CPU_A_[25 :0]sh. 1,2,6,9

CPU_D_[31 :0]sh. 1,2,6,9

MARA_1_ CS_Lsh. 9 MARA_ WR_Lsh. 2,4 CPU_WAI T_Lsh. 1,2,9

VCC33

J8

DNS

HEADER6

M1_GTOPsh. 2

C127

0.1uF

DNS

R29 22

C89

0.1uF

C286

0.1uF

5

C91

C90

0.1uF

M1_SD_O UT_7 M1_SD_O UT_6 M1_SD_O UT_5 M1_SD_O UT_4 M1_SD_O UT_3 M1_SD_O UT_2 M1_SD_O UT_1 M1_SD_O UT_0

M1_SD_IN_ 7 M1_SD_IN_ 6 M1_SD_IN_ 5 M1_SD_IN_ 4 M1_SD_IN_ 3 M1_SD_IN_ 2 M1_SD_IN_ 1 M1_SD_IN_ 0

M1_I8S_BITC LK

1

M1_I8S_SYNC

2

M1_I2S_BITC LK

3

M1_I2S_SYNC

4

M1_LJ_BIT CLK

5

M1_LJ_SYN C

6

M1_SMCH _OUT_3 M1_SMCH _OUT_2 M1_SMCH _OUT_1 M1_SMCH _OUT_0

M1_SMCH_I N_3 M1_SMCH_I N_2 M1_SMCH_I N_1 M1_SMCH_I N_0

DNS

R174 10K

R20 0 R62 0 R63 0 R40 0

DNS

M1_REFC LK_OUT

C92

0.1uF

CPU_A_1 6 CPU_A_1 5 CPU_A_1 4 CPU_A_1 3 CPU_A_1 2 CPU_A_1 1 CPU_A_1 0 CPU_A_9 CPU_A_8 CPU_A_7 CPU_A_6 CPU_A_5 CPU_A_4 CPU_A_3 CPU_A_2 CPU_A_1 CPU_A_0

CPU_D_3 1 CPU_D_3 0 CPU_D_2 9 CPU_D_2 8 CPU_D_2 7 CPU_D_2 6 CPU_D_2 5 CPU_D_2 4 CPU_D_2 3 CPU_D_2 2 CPU_D_2 1 CPU_D_2 0 CPU_D_1 9 CPU_D_1 8 CPU_D_1 7 CPU_D_1 6 CPU_D_1 5 CPU_D_1 4 CPU_D_1 3 CPU_D_1 2 CPU_D_1 1 CPU_D_1 0 CPU_D_9 CPU_D_8 CPU_D_7 CPU_D_6 CPU_D_5 CPU_D_4 CPU_D_3 CPU_D_2 CPU_D_1 CPU_D_0

C93

0.1uF

MARA 1

AF16

A_16

AE15

A_15

AF15

A_14

AE14

A_13

AF14

A_12

AF13

A_11

AE13

A_10

AF12

A_9

AE12

A_8

AF11

A_7

AE11

A_6

AE2

A_5

AF1

A_4

AE1

A_3

AD2

A_2

AD1

A_1

AC2

A_0

M2

DHI_15

M1

DHI_14

L1

DHI_13

L2

DHI_12

K1

DHI_11

K2

DHI_10

J1

DHI_9

J2

DHI_8

H1

DHI_7

H2

DHI_6

G1

DHI_5

G2

DHI_4

F1

DHI_3

F2

DHI_2

E1

DHI_1

E2

DHI_0

Y2

DLO_15

Y1

DLO_14

W2

DLO_13

W1

DLO_12

V2

DLO_11

V1

DLO_10

U2

DLO_9

U1

DLO_8

T2

DLO_7

T1

DLO_6

R2

DLO_5

R1

DLO_4

P2

DLO_3

P1

DLO_2

N2

DLO_1

N1

DLO_0

AA1

CE_L

AC1

WR_L

AB2

READY/DTACK_L

AB1

DREQ_L

AA2

DACK_L

AF20

SD_OUT_7

AE19

SD_OUT_6

AF19

SD_OUT_5

AE18

SD_OUT_4

AF18

SD_OUT_3

AE17

SD_OUT_2

AF17

SD_OUT_1

AE16

SD_OUT_0

AD25

SD_IN_7

AE26

SD_IN_6

AE25

SD_IN_5

AF26

SD_IN_4

AE24

SD_IN_3

AF25

SD_IN_2

AF24

SD_IN_1

AE23

SD_IN_0

AE20

I8S_SCLK

AF21

I8S_SYNC

AE21

I2S_SCLK

AF22

I2S_SYNC

AE22

LJ_SCLK

AF23

LJ_SYNC

AB26

SMOOCH_OUT_3

AB25

SMOOCH_OUT_2

AC26

SMOOCH_OUT_1

AC25

SMOOCH_OUT_0

Y26

SMOOCH_IN_3

Y25

SMOOCH_IN_2

AA26

SMOOCH_IN_1

AA25

SMOOCH_IN_0

AF10

GTOP

AE4

VDDAN

AF3

VSSAN

AF4

PLL_BYPASS

AE5

PLL_TST_1

AF5

PLL_TST_0

AE10

TST_CLK_OUT

AE9

CLK

AE8

REFCLK_OUT

AF6

RESET_L

C94

0.1uF

cpu address

cpu data

cpu control

dma

standard audio

hi speed audio

pll

system

C95

0.1uF

C96

0.1uF

+

C97 100uF

AA3

AA4

AB3

AB4

AC3

AC9

AC10

AC14

VCC33

GND

AC8

AC4

AB24

AB23

AC11

4

VCC25VCC33 VCC18

+

C98

C99

22uF

AC15

AC16

AC20

AC21

AC22

AC23

AC24

AD9

AD10

AD14

AD15

AD16

AD20

VCC33

C100

C101

0.1uF

AD21

AD22

AD23

AD24

AD26

C24

D23

D24

E23

E24

VCC33

VCC33D3VCC33

VCC33

VCC33E3VCC33E4VCC33

VCC33

VCC33F3VCC33F4VCC33

MARA 1 DECOUPLING CAPS

C102

0.1uF

C103

0.1uF

F23

F24

G23

G24

H23

VCC33

C105

C104

0.1uF

H24

M23

M24

P23

P24

VCC33

VCC33K3VCC33K4VCC33

VCC33

VCC33P3VCC33P4VCC33

C106

0.1uF

VCC33

VCC33R3VCC33R4VCC33T3VCC33T4VCC33

T23

MARA

U11

GND

GNDG3GNDG4GNDJ3GNDJ4GND

GND

GNDL3GNDL4GND

GND

GNDN3GNDN4GND

GND

J23

J24

C23

AD3

AC13

AC17

AC19

D22

AD8

AD11

AD13

AD17

AD19

4

L16

N11

N16

M11

M16

T11

T12

T13

T14

P11

P16

R11

R16

T15

R23

R24

GND

T16

GNDU3GNDU4GNDW3GND

GNDC3GNDD4GND

W4

L11

M12

GND

C107

0.1uF

T24

VCC33

GND

M13

3

L17

VCC25

C112

C113

+

C108

0.1uF

U23

U24

V23

V24

Y4

VCC33

GND

M14

VCC25C4VCC25C5VCC25

VCC33

VCC33Y3VCC33

GND

P12

N12

N13

N14

N15

N23

N24

M15

3

+

100uF

22uF

C11

C13

C15

C19

D11

D13

D15

D19

VCC25

VCC25D5VCC25

VCC25

VCC25C9VCC25

GND

P13

P14

P15

R12

R13

R14

R15

W23

W24

C109

0.1uF

C14

C16

VCC25

VCC25D9VCC25

GNDD1GNDC6GNDC7GNDC8GND

C110

0.1uF

VCC18VCC33

D14

D16

AA23

AA24

VCC25

VCC18

GNDD6GNDD7GNDD8GND

C20

C280

AC18

VCC18

GND

L15

10uf

AD4

AD5

VCC18

GND

C10

600 OHM @ 100MHz

AD7

AD12

AD18

AD6

VCC18

GND

C17

D10

D17

K24

K23

H3

C21

C22

D21

VCC18

VCC18H4VCC18

VCC18

C111

0.1uF

AC7

AC12

AC5

AC6

VCC18

GND

L12

L13

L14

D20

2

C115

C114

0.1uF

M4

L24

L23

VCC18V3VCC18V4VCC18

VCC18M3VCC18

VCC18

0.1uF

C12

Y23

Y24

VCC18

2

C116

0.1uF

VCC18_ISO _M1

C18

D12

D18

VCC18

ROM_CS_1/WE_ODD_L

ROM_CS_0/QSA_EVN_L

C118

C117

0.1uF

C128

0.1uF

rom address

ROM_A_26 ROM_A_25 ROM_A_24 ROM_A_23 ROM_A_22 ROM_A_21 ROM_A_20 ROM_A_19 ROM_A_18 ROM_A_17 ROM_A_16 ROM_A_15 ROM_A_14 ROM_A_13 ROM_A_12 ROM_A_11 ROM_A_10

ROM_A_9 ROM_A_8 ROM_A_7 ROM_A_6 ROM_A_5 ROM_A_4 ROM_A_3 ROM_A_2 ROM_A_1 ROM_A_0

rom data

ROM_D_15 ROM_D_14 ROM_D_13 ROM_D_12 ROM_D_11 ROM_D_10

ROM_D_9 ROM_D_8 ROM_D_7 ROM_D_6

ROM_D_5 CFG_4/ROM_D_4 CFG_3/ROM_D_3 CFG_2/ROM_D_2 CFG_1/ROM_D_1 CFG_0/ROM_D_0

rom control

ROM_WE_EVN_L

ROM_OE_L

ddr sdram address

DDR_BA_1 DDR_BA_0

DDR_A_12 DDR_A_11 DDR_A_10

DDR_A_9 DDR_A_8 DDR_A_7 DDR_A_6 DDR_A_5 DDR_A_4 DDR_A_3 DDR_A_2 DDR_A_1 DDR_A_0

ddr sdram data

DDR_D_15 DDR_D_14 DDR_D_13 DDR_D_12 DDR_D_11 DDR_D_10

DDR_D_9 DDR_D_8 DDR_D_7 DDR_D_6 DDR_D_5 DDR_D_4 DDR_D_3 DDR_D_2 DDR_D_1 DDR_D_0

ddr sdram control

DDR_DQS_3 DDR_DQS_2 DDR_DQS_1 DDR_DQS_0 DDR_CAS_L DDR_RAS_L

DDR_WE_L

DDR_CLK_H DDR_CLK_L

DDR_CKE

VREF

jtag

TDO

TCK TMS

TRST_L

internal scan

TEST_MODE

SCANENABLE

MARA

C137

0.1uF

TDI

C120

C121

0.1uF

600 OHM @ 100MHz

C139

10uf

M1_ROM_ A_26 M1_ROM_ A_25 M1_ROM_ A_24 M1_ROM_ A_23 M1_ROM_ A_22 M1_ROM_ A_21 M1_ROM_ A_20 M1_ROM_ A_19 M1_ROM_ A_18 M1_ROM_ A_17 M1_ROM_ A_16 M1_ROM_ A_15 M1_ROM_ A_14 M1_ROM_ A_13 M1_ROM_ A_12 M1_ROM_ A_11 M1_ROM_ A_10 M1_ROM_ A_9 M1_ROM_ A_8 M1_ROM_ A_7 M1_ROM_ A_6 M1_ROM_ A_5 M1_ROM_ A_4 M1_ROM_ A_3 M1_ROM_ A_2 M1_ROM_ A_1 M1_ROM_ A_0

M1_ROM_ D_15 M1_ROM_ D_14 M1_ROM_ D_13 M1_ROM_ D_12 M1_ROM_ D_11 M1_ROM_ D_10 M1_ROM_ D_9 M1_ROM_ D_8 M1_ROM_ D_7 M1_ROM_ D_6 M1_ROM_ D_5 M1_ROM_ D_4 M1_ROM_ D_3 M1_ROM_ D_2 M1_ROM_ D_1 M1_ROM_ D_0

DDR_BA1 DDR_BA0

DDR_A12 DDR_A11

1

DDR_A10

2

DDR_A9

3

DDR_A8

4 DDR_A7 DDR_A6 DDR_A5 DDR_A4 DDR_A3 DDR_A2 DDR_A1 DDR_A0

DDR_D14

DDR_D12 DDR_D_12 DDR_D11 DDR_D10 DDR_D9 DDR_D8

DDR_D6 DDR_D5 DDR_D4 DDR_D_4 DDR_D3 DDR_D2 DDR_D1 DDR_D0

ST_DDR_ DQS_2

ST_DDR_ DQS_0

R24

24.9

R26

24.9

R27

24.9

M1_TDO M1_TDI M1_TCK M1_TMS M1_TRST _L

10

1

2

3

4

10

8

7

6

5

8

7

6

5

R22

R25

R28

VCC18

L16

RN20

1

8

2

7

3

6

4

5

22

RN21

1 2 3 4

RN22

10

8 7 6 5

RN23

1 2 3 4

10

RN24

8 7 6 5

RN25

8 7 6 5

10

RN26

1 2 3 4

RN27

10

8 7 6 5

10

RN28

1 2 3 4

10

R21

24.9

R23

24.9

24.9 DDR_RAS _L sh. 4

DDR_W E_L sh. 4

24.9

DDR_CLK _H sh. 4 DDR_CLK _L sh. 4

24.9 DDR_CKE sh. 4

DDR_VRE F sh. 4

Young Chang R&D Institute

1432 Main St. Waltham MA 0245 1 USA

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

Title

PC3 ENGI NE BOARD ASSEM BLY

MARA 1

Size Doc ument Number Rev

By

R. Folk

Date: Sheet

Monday, Decemb er 03, 2007

B20 A21 B21 A22 B22 A23 B23 A24 B24 A25 B25 A26 B26 C25 C26 D25 D26 E25 E26 F25 F26 G25 G26 H25 H26 J25 J26

M25 M26 N25 N26 P25 P26 R26 R25 T26 T25 U26 U25 V26 V25 W26 W25

L25 K26 L26 K25

B11 A11

B12 A12 B13 A13 A14 B14 A15 B15 A16 B16 A17 B17 A18

C1 C2 B1 B2 A1 B3 A2 A3 B6 A6 B7 A7 B8 A8 B9 A9

B4 A4 B5 A5 A10 A20 B19

A19 B18 B10

D2

AE7 AF9 AF7 AE3 AF8

AE6 AF2

C119

0.1uF

C138

0.1uF

M1_ROM_A _[26:0] sh. 5

M1_ROM_D _[15:0] sh. 5

8 7 6 5

1 2 3 4

DDR_DQS _2 sh. 4

DDR_DQS _0 sh. 4 DDR_CAS _L sh. 4

Kurzweil PC3x Service Manual

1

VCC18VCC33 VCC25 VCC18

+

M1_ROM_ D_4 M1_ROM_ D_3

VCC33

HEADER_ 4X2_SMT

021304 RE VC

+

C122 100uF

Do Not Stuff

R158 10K

DNS

RN35

1

8

2

7

3

6

4

5

10K

DDR_BA_[1 :0] sh. 4

DDR_A_[12 :0] sh. 4

DDR_D_[15 :0] sh. 4

J31

DNS

2

1

4

3

6

5

8

7

RN34

1

8

2

7

3

6

4

5

10K

3 9

of

C123 22uF

VCC33

C125

C124

1uf

1u

f

0805

M1_ROM_ D_4 M1_ROM_ D_3 M1_ROM_ D_2 M1_ROM_ D_0

M1_ROM_D_1 is Don't Care on Power Up

M1_ROM _WE_EVN_L sh. 5

M1_ROM _WE_ODD_L sh. 5 M1_ROM_ OE_L sh. 5

M1_ROM_ QSA_EVN_L sh. 5

DDR_BA_ 1 DDR_BA_ 0

DDR_A_1 2 DDR_A_1 1 DDR_A_1 0 DDR_A_9 DDR_A_8 DDR_A_7 DDR_A_6 DDR_A_5 DDR_A_4 DDR_A_3 DDR_A_2 DDR_A_1 DDR_A_0

DDR_D_1 5DDR_D15 DDR_D_1 4 DDR_D_1 3DDR_D13

DDR_D_1 1 DDR_D_1 0

DDR_D_9 DDR_D_8 DDR_D_7DD R_D7 DDR_D_6 DDR_D_5

DDR_D_3 DDR_D_2 DDR_D_1 DDR_D_0

M1_TDI

M1_TRST _L M1_TMS M1_TCK M1_TDI

1

R159 10K

DNS

VCC33

M1_TDO M1_TRST _L M1_TMS M1_TCK

RCV2

6-5

Kurzweil PC3x Service Manual

L5

1 2

VCC33_ISO _U14

600 OHM @ 100MHz

D D

J32

DNS

HEADER2

XTAL BYPASS

C C

C142

33pF

C140

0.1uF

5

52

1 6

R39

5.1M

X3

12.2880M Hz

U14A

NC7WZ U04

R38

2.0K

C143

33pF

3 4

NC7WZ U04

U14B

VCC33VCC33

600 OHM @ 100MHz

MARA_CLKBUF _IN

L6

VCC33_ISO _U15

C141

0.1uF

U15

3

IDT74FCT3 8075

Engine Board Assembly–MARA Clocks, Delay Memory Interface (4 of 9)

4

2

IN

1

O5

VCC

8

O4

O3

O2

O1

GND

4

R37

7

6

5

22

R36

22

R35

22

3

DAC_CLK 12_288 sh. 7

M1_CLK12_2 88_IN sh. 3

M2_CLK12_2 88_IN sh. 2

2

VCC33

C243

0.1uF

CPU_W R_Lsh. 1,9

VCC33

R34

10K

R138 330

0

1

U12A

2 3

74LCX12 5

4

U12B

5 6

74LCX12 5

10

U12C

9 8

74LCX12 5

13

U12D

12 11

74LCX12 5

R151 330

R137

22

R136

22

1

MARA_ WR_L sh. 2,3

CPU_WR _BUF_L sh. 6,9

DDR_D_[15 :0]sh. 3

DDR_A_[12 :0]sh. 3

VCC25

B B

DDR_VRE Fsh. 3

C136

0.1uF

DDR_BA_[1 :0]sh. 3

DDR_CAS _Lsh. 3 DDR_RAS _Lsh. 3 DDR_W E_Lsh. 3 DDR_CLK _Lsh. 3 DDR_CLK _Hsh. 3

DDR_CKEsh. 3

A A

5

4

3

C135

0.1uF

R32

10K

R31

10K

DDR_A_1 2 DDR_A_1 1 DDR_A_1 0

DDR_A_9 DDR_A_8 DDR_A_7 DDR_A_6 DDR_A_5 DDR_A_4 DDR_A_3 DDR_A_2 DDR_A_1 DDR_A_0

DDR_BA_ 1 DDR_BA_ 0

2

U13

49

VREF

17

A13

42

A12

41

A11

28

A10

40

A9

39

A8

38

A7

37

A6

36

A5

35

A4

32

A3

31

A2

30

A1

29

A0

27

BA1

26

BA0

22

CAS

23

RAS

21

WE

24

CS

46

CK

45

CK

44

CKE

VCC25

VDD1VDD18VDD

*

* *

*

VSS34VSS48VSS66VSSQ6VSSQ12VSSQ52VSSQ58VSSQ

33

VDDQ3VDDQ9VDDQ15VDDQ55VDDQ

MT46V8M1 6P-75

VCC25

DQ15 DQ14 DQ13 DQ12 DQ11 DQ10

DQ9 DQ8 DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0

UDQS

LDQS

UDM

LDM

61

DDR_D_1 5

65

DDR_D_1 4

63

DDR_D_1 3

62

DDR_D_1 2

60

DDR_D_1 1

59

DDR_D_1 0

57

DDR_D_9

56

DDR_D_8

54

DDR_D_7

13

DDR_D_6

11

DDR_D_5

10

DDR_D_4

8

DDR_D_3

7

DDR_D_2

5

DDR_D_1

4

DDR_D_0

2

51 16

47 20

64

VCC25

C130

C129

0.1uF

DDR_DQS _2 sh. 3 DDR_DQS _0 sh. 3

Young Chang R&D Institute

1432 Main St. Waltham MA 0245 1 USA

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

Title

PC3 ENGINE BOARD ASSEMBLY

MARA Clocks, Del ay Memory Interface

Size Doc ument Number Rev

By

R. Folk

Monday, Decemb er 03, 2007

Date: Sheet

C131

0.1uF

1

C132

0.1uF

C133

0.1uF

021304 R EVC

4 9

C134

0.1uF

of

RCV2

6-6

Engine Board Assembly–Sound ROM (5 of 9)

5

4

3

2

Kurzweil PC3x Service Manual

1

MASK ROM

BUS EXCHANGERS

M1_ROM_A _[26:0]sh. 3

D D

C C

B B

A A

M2_ROM_A _[26:0]sh. 2

M1_ROM_ A_23 M1_ROM_ A_22 M1_ROM_ A_21 M1_ROM_ A_20 M1_ROM_ A_19 M1_ROM_ A_18 M1_ROM_ A_17 M1_ROM_ A_16 M1_ROM_ A_15 M1_ROM_ A_14 M1_ROM_ A_13 M1_ROM_ A_12

M2_ROM_ A_23 M2_ROM_ A_22 M2_ROM_ A_21 M2_ROM_ A_20 M2_ROM_ A_19 M2_ROM_ A_18 M2_ROM_ A_17 M2_ROM_ A_16 M2_ROM_ A_15 M2_ROM_ A_14 M2_ROM_ A_13 M2_ROM_ A_12

HI HI

74CBTLV 16212

M1_ROM_ A_11

5

6

5

M1_ROM_ A_10 M1_ROM_ A_9 M1_ROM_ A_8 M1_ROM_ A_7 M1_ROM_ A_6 M1_ROM_ A_5 M1_ROM_ A_4 M1_ROM_ A_3 M1_ROM_ A_2 M1_ROM_ A_1 M1_ROM_ A_0

M2_ROM_ A_11 M2_ROM_ A_10 M2_ROM_ A_9 M2_ROM_ A_8 M2_ROM_ A_7 M2_ROM_ A_6 M2_ROM_ A_5 M2_ROM_ A_4 M2_ROM_ A_3 M2_ROM_ A_2 M2_ROM_ A_1 M2_ROM_ A_0

HI HI

74CBTLV 16212

VCC33

U25A

8

1

2

4

NC7WZ08

U25B

NC7WZ 08

VCC33

R42

10K

HI

M1_ROM_ QSA_EVN_Lsh. 3

M1_ROM_D _[15:0]sh. 3

M2_ROM_D _[15:0]sh. 2

M1_ROM _WE_EVN_Lsh. 3

M2_ROM _WE_EVN_Lsh. 2

M1_ROM _WE_ODD_Lsh. 3

M2_ROM _WE_ODD_Lsh. 2

VCC33 VCC33

C146

U16

2

1A1

4

2A1

6

3A1

9

4A1

11

5A1

13

6A1

15

7A1

18

8A1

21

9A1

23

10A1

25

11A1

27

12A1

3

1A2

5

2A2

7

3A2

10

4A2

12

5A2

14

6A2

16

7A2

20

8A2

22

9A2

24

10A2

26

11A2

28

12A2

1

S0

56

S1

55

S2

U18

2

1A1

4

2A1

6

3A1

9

4A1

11

5A1

13

6A1

15

7A1

18

8A1

21

9A1

23

10A1

25

11A1

27

12A1

3

1A2

5

2A2

7

3A2

10

4A2

12

5A2

14

6A2

16

7A2

20

8A2

22

9A2

24

10A2

26

11A2

28

12A2

1

S0

56

S1

55

S2

VCC33

7

3

0.1uF

17

VCC

GND8GND19GND38GND

VCC33 VCC33

17

VCC

GND8GND19GND38GND

C152

0.1uF

ER_A_23

54

1B1

ER_A_22

52

2B1

ER_A_21

50

3B1

ER_A_20

47

4B1

ER_A_19

45

5B1

ER_A_18

43

6B1

ER_A_17

41

7B1

ER_A_16

39

8B1

ER_A_15

36

9B1

ER_A_14

34

10B1

ER_A_13

32

11B1

ER_A_12

30

12B1

OR_A_23

53

1B2

OR_A_22

51

2B2

OR_A_21

48

3B2

OR_A_20

46

4B2

OR_A_19

44

5B2

OR_A_18

42

6B2

OR_A_17

40

7B2

OR_A_16

37

8B2

OR_A_15

35

9B2

OR_A_14

33

10B2

OR_A_13

31

11B2

OR_A_12

29

12B2

49

C150

0.1uF

ER_A_11

54

1B1

ER_A_10

52

2B1

ER_A_9

50

3B1

ER_A_8

47

4B1

ER_A_7

45

5B1

ER_A_6

43

6B1

ER_A_5

41

7B1

ER_A_4

39

8B1

ER_A_3

36

9B1

ER_A_2

34

10B1

ER_A_1

32

11B1

ER_A_0

30

12B1

OR_A_11

53

1B2

OR_A_10

51

2B2

OR_A_9

48

3B2

OR_A_8

46

4B2

OR_A_7

44

5B2

OR_A_6

42

6B2

OR_A_5

40

7B2

OR_A_4

37

8B2

OR_A_3

35

9B2

OR_A_2

33

10B2

OR_A_1

31

11B2

OR_A_0

29

12B2

49

ER_WE _L sh. 6

OR_WE _L sh. 6

M1_ROM_ OE_L

sh. 3

M2_ROM_ OE_L

sh. 2

M1_ROM_A _[26:0]sh. 3 M2_ROM_A _[26:0]sh. 2

M1_DIM1_C S1_L M1_DIM1_C S0_L M1_DIM0_C S1_L M1_DIM0_C S0_L M1_ROM1 _CS_L M1_ROM0 _CS_L

M1_ROM_ D_15 M1_ROM_ D_14 M1_ROM_ D_13 M1_ROM_ D_12

M2_DIM1_C S1_L M2_DIM1_C S0_L M2_DIM0_C S1_L M2_DIM0_C S0_L M2_ROM1 _CS_L M2_ROM0 _CS_L

4

M2_ROM_ D_15 M2_ROM_ D_14 M2_ROM_ D_13 M2_ROM_ D_12

M1_ROM_ D_11 M1_ROM_ D_10 M1_ROM_ D_9 M1_ROM_ D_8 M1_ROM_ D_7 M1_ROM_ D_6 M1_ROM_ D_5 M1_ROM_ D_4 M1_ROM_ D_3 M1_ROM_ D_2 M1_ROM_ D_1 M1_ROM_ D_0

M2_ROM_ D_11 M2_ROM_ D_10 M2_ROM_ D_9 M2_ROM_ D_8 M2_ROM_ D_7 M2_ROM_ D_6 M2_ROM_ D_5 M2_ROM_ D_4 M2_ROM_ D_3 M2_ROM_ D_2 M2_ROM_ D_1 M2_ROM_ D_0

M1_ROM_ A_26 M1_ROM_ A_25

M1_ROM_ A_24

C147

17

VCC

GND8GND19GND38GND

17

VCC

GND8GND19GND38GND

U24A

1

3 2

U24B

15

13 14

10B1 11B1 12B1

10B2 11B2 12B2

10B1 11B1 12B1

10B2 11B2 12B2

EN

A1 A0

EN

A1 A0

0.1uF

54

1B1

52

2B1

50

3B1

47

4B1

45

5B1

ROM1_EV N_CS_L

43

6B1

ROM0_EV N_CS_L

41

7B1

39

8B1

ER_D_15

36

9B1

ER_D_14

34

ER_D_13 ER_A_11

32

ER_D_12

30

53

1B2

51

2B2

48

3B2

46

4B2

44

5B2

ROM1_OD D_CS_L

42

6B2

ROM0_OD D_CS_L

40

7B2

37

8B2 9B2

49

1B1 2B1 3B1 4B1 5B1 6B1 7B1 8B1 9B1

1B2 2B2 3B2 4B2 5B2 6B2 7B2 8B2 9B2

49

8

GND

VCC33

16

74LCX13 9

8

GND

VCC33

16

35 33 31 29

C151

0.1uF

54 52 50 47 45 43 41 39 36 34 32 30

53 51 48 46 44 42 40 37 35 33 31 29

O3 O2 O1 O0

74LCX13 9

OR_D_15 OR_D_14 OR_D_13 OR_D_12

ER_D_11 ER_D_10 ER_D_9 ER_D_8 ER_D_7 ER_D_6 ER_D_5 ER_D_4 ER_D_3 ER_D_2 ER_D_1 ER_D_0

OR_D_11 OR_D_10 OR_D_9 OR_D_8 OR_D_7 OR_D_6 OR_D_5 OR_D_4 OR_D_3 OR_D_2 OR_D_1 OR_D_0

7 6 5 4

9 10 11 12

M1_DIM1_C S1_L M1_DIM1_C S0_L M1_DIM0_C S1_L M1_DIM0_C S0_L

M1_ROM1 _CS_L M1_ROM0 _CS_L

U17

2

1A1

4

2A1

6

3A1

9

4A1

11

5A1

13

6A1

15

7A1

18

8A1

21

9A1

23

10A1

25

11A1

27

12A1

3

1A2

5

2A2

7

3A2

10

4A2

12

5A2

14

6A2

16

7A2

20

8A2

22

9A2

24

10A2

26

11A2

28

12A2

1

S0

56

S1

55

S2

74CBTLV 16212

U19

2

1A1

4

2A1

6

3A1

9

4A1

11

5A1

13

6A1

15

7A1

18

8A1

21

9A1

23

10A1

25

11A1

27

12A1

3

1A2

5

2A2

7

3A2

10

4A2

12

5A2

14

6A2

16

7A2

20

8A2

22

9A2

24

10A2

26

11A2

28

12A2

1

S0

HIHI

56

S1

55

S2

74CBTLV 16212

VCC33

VCC33 VCC33

C153

0.1uF

ER_A_[23: 0] sh. 6

OR_A_[23: 0] sh. 6

ROM_EVN _OE_L sh. 6 DIM1_EVN_ CS1_L sh. 6 DIM1_EVN_ CS0_L sh. 6 DIM0_EVN_ CS1_L sh. 6 DIM0_EVN_ CS0_L sh. 6

ROM_ODD _OE_L sh. 6 DIM1_ODD_ CS1_L sh. 6 DIM1_ODD_ CS0_L sh. 6 DIM0_ODD_ CS1_L sh. 6 DIM0_ODD_ CS0_L sh. 6

ER_D_[15: 0] sh. 6

OR_D_[15: 0] sh. 6

3

VCC33

R41

10K

ROM_BHE

OR_A_[23: 0]

VCC33

C144

0.1uF

PC3 BASE-1 ODD

OR_A_23

36 OR_A_22 OR_A_21 OR_A_20 OR_A_19 OR_A_18 OR_A_17 OR_A_16 OR_A_15 OR_A_14 OR_A_13 OR_A_12 OR_A_11 OR_A_10 OR_A_9 OR_A_8 OR_A_7 OR_A_6 OR_A_5 OR_A_4 OR_A_3 OR_A_2 OR_A_1

ROM1_OD D_CS_L ROM1_EV N_CS_LHI HI

A22

12

A21

13

A20

11

A19

14

A18

15

A17

2

A16

3

A15

4

A14

5

A13

6

A12

7

A11

8

A10

9

A9

10

A8

16

A7

17

A6

18

A5

19

A4

20

A3

21

A2

22

A1

23

A0

PC3 BASE-0 ODD

OR_A_23

36

VCC33

16

VCC33

16

8

O3 O2

GND

O1 O0

74LCX13 9

8

O3 O2

GND

O1 O0

74LCX13 9

A22

12

A21

13

A20

11

A19

14

A18

15

A17

2

A16

3

A15

4

A14

5

A13

6

A12

7

A11

8

A10

9

A9

10

A8

16

A7

17

A6

18

A5

19

A4

20

A3

21

A2

22

A1

23

A0

7 6 5 4

9 10 11 12

OR_A_22 OR_A_21 OR_A_20 OR_A_19 OR_A_18 OR_A_17 OR_A_16 OR_A_15 OR_A_14 OR_A_13 OR_A_12 OR_A_11 OR_A_10 OR_A_9 OR_A_8 OR_A_7 OR_A_6 OR_A_5 OR_A_4 OR_A_3 OR_A_2 OR_A_1

OR_D_[15: 0]

ROM_ODD _OE_L

ROM0_OD D_CS_L ROM0_EV N_CS_L

U26A

1

VCC33

C154

0.1uF

U26B

15

13 14

EN

3

A1

2

A0

EN

A1 A0

M2_ROM_ A_26 M2_DIM0_CS 1_L M2_ROM_ A_25

U20

38

24

CE

VCC37VCC

27

OE

BHE

D15/A-1

D14 D13 D12 D11 D10

D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

GND25GND26GND47GND

48

VCC33 VCC33

38

CE

VCC37VCC

OE

BHE

D15/A-1

D14 D13 D12 D11 D10

D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

GND25GND26GND47GND

48

M2_DIM1_C S1_L M2_DIM1_C S0_L

M2_DIM0_C S0_L

M2_ROM1 _CS_L M2_ROM0 _CS_LM2_ROM_ A_24

1

46 44 42 40 35 33 31 29 45 43 41 39 34 32 30 28

MR27T12 800L

C148

0.1uF

U22

24

27

1

46 44 42 40 35 33 31 29 45 43 41 39 34 32 30 28

MR27T12 800L

ROM_BHE

OR_D_15 OR_D_14 OR_D_13 OR_D_12 OR_D_11 OR_D_10 OR_D_9 OR_D_8 OR_D_7 OR_D_6 OR_D_5 OR_D_4 OR_D_3 OR_D_2 OR_D_1 OR_D_0

2

ER_A_[23: 0]

ER_D_[15: 0]

ROM_EVN _OE_L

VCC33

C145

0.1uF

PC3 BASE-1 EVEN

ER_A_23

36 ER_A_22 ER_A_21 ER_A_20 ER_A_19 ER_A_18 ER_A_17 ER_A_16 ER_A_15 ER_A_14 ER_A_13 ER_A_12

ER_A_10 ER_A_9 ER_A_8 ER_A_7 ER_A_6 ER_A_5 ER_A_4 ER_A_3 ER_A_2 ER_A_1

A22

12

A21

13

A20

11

A19

14

A18

15

A17

2

A16

3

A15

4

A14

5

A13

6

A12

7

A11

8

A10

9

A9

10

A8

16

A7

17

A6

18

A5

19

A4

20

A3

21

A2

22

A1

23

A0

PC3 BASE-0 EVEN

ER_A_23

36 ER_A_22 ER_A_21 ER_A_20 ER_A_19 ER_A_18 ER_A_17 ER_A_16 ER_A_15 ER_A_14 ER_A_13 ER_A_12 ER_A_11 ER_A_10 ER_A_9 ER_A_8 ER_A_7 ER_A_6 ER_A_5 ER_A_4 ER_A_3 ER_A_2 ER_A_1

A22

12

A21

13

A20

11

A19

14

A18

15

A17

2

A16

3

A15

4

A14

5

A13

6

A12

7

A11

8

A10

9

A9

10

A8

16

A7

17

A6

18

A5

19

A4

20

A3

21

A2

22

A1

23

A0

Young Chang R&D Institute

1432 Main St. Waltham MA 0245 1 USA

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

Title

PC3 ENGI NE BOARD ASSEM BLY

Sound RO M

Size Doc ument Number Rev

By

Date: Sheet of

U21

38

24

CE

VCC37VCC

27

OE

1

BHE

46

D15/A-1

44

D14

42

D13

40

D12

35

D11

33

D10

31

D9

29

D8

45

D7

43

D6

41

D5

39

D4

34

D3

32

D2

30

D1

28

D0

GND25GND26GND47GND

48

MR27T12 800L

C149

0.1uF

U23

38

24

CE

VCC37VCC

27

OE

1

BHE

46

D15/A-1

44

D14

42

D13

40

D12

35

D11

33

D10

31

D9

29

D8

45

D7

43

D6

41

D5

39

D4

34

D3

32

D2

30

D1

28

D0

GND25GND26GND47GND

48

MR27T12 800L

R. Folk

Monday, Decemb er 03, 2007

1

ROM_BHE

ER_D_15 ER_D_14 ER_D_13 ER_D_12 ER_D_11 ER_D_10 ER_D_9 ER_D_8 ER_D_7 ER_D_6 ER_D_5 ER_D_4 ER_D_3 ER_D_2 ER_D_1 ER_D_0

ROM_BHEROM_BHE

ER_D_15 ER_D_14 ER_D_13 ER_D_12 ER_D_11 ER_D_10 ER_D_9 ER_D_8 ER_D_7 ER_D_6 ER_D_5 ER_D_4 ER_D_3 ER_D_2 ER_D_1 ER_D_0

021304 R EVC

5 9

RCV2

6-7

Kurzweil PC3x Service Manual

OR_A_[23: 0]sh. 5

D D

DIM0_ODD_ CS1_Lsh. 5

C C

B B

A A

DIM0_ODD_ CS0_Lsh. 5

RESET_Lsh. 1,3,9

DIM0_EVN_ CS1_Lsh. 5 DIM0_EVN_ CS0_Lsh. 5

VCC33 VCC33

C258

C259

0.1uF

ER_A_[23: 0]sh. 5

DNS

C162

0.1uF

DNS

C163

0.1uF

Engine Board Assembly–ROM DIMMs, SmartMedia Interface, LCD, etc. (6 of 9)

5

PC3 ROM DIMMS

DIMM-0 DIMM-1

VCC33 VCC33 VCC33

J10

1

85

2

86 OR_A_24 OR_A_23

OR_A_22 OR_A_21

OR_A_20 OR_A_19

OR_A_18 OR_A_17

OR_A_16 OR_A_15

OR_A_14 OR_A_13

OR_A_12 OR_A_11

OR_A_10 OR_A_9

OR_A_8 OR_A_7

OR_A_6 OR_A_5

OR_A_4 OR_A_3

OR_A_2 OR_A_1

ER_A_24 ER_A_23

ER_A_22 ER_A_21

ER_A_20 ER_A_19

ER_A_18 ER_A_17

ER_A_16 ER_A_15

ER_A_14 ER_A_13

ER_A_12 ER_A_11

ER_A_10 ER_A_9

ER_A_8 ER_A_7

ER_A_6 ER_A_5

ER_A_4 ER_A_3

ER_A_2 ER_A_1

DNS

C165

0.1uF

3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84

CONN_SOC KET_DIMM84X2

DNS

C161

0.1uF

DEBUG_T XD

DNS

C166

0.1uF

5

VCC33

OR_D_15

87 88

OR_D_14

89 90

OR_D_13

91 92

OR_D_12

93 94

OR_D_11

95 96

OR_D_10

97 98

OR_D_9

99 100

OR_D_8

101 102

OR_D_7

103 104 105 106

OR_D_6

107 108

OR_D_5

109 110

OR_D_4

111 112

OR_D_3

113 114

OR_D_2

115 116

OR_D_1

117 118

OR_D_0

119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168

ROM_ODD _OE_L sh. 5

OR_WE _L sh. 5

DIM_BUSY_L sh. 1

DIM_WP _L sh. 1

ROM_EVN _OE_Lsh. 5

ER_WE _L sh. 5

ER_D_15

ER_D_14

ER_D_13

ER_D_12

ER_D_11

ER_D_10

ER_D_9

ER_D_8

ER_D_7

ER_D_6

ER_D_5

ER_D_4

ER_D_3

ER_D_2

ER_D_1

ER_D_0

C254

0.1uF

C256

0.1uF

VCC33

C255

0.1uF

C257

0.1uF

DIM1_ODD_ CS1_Lsh. 5 DIM1_ODD_ CS0_Lsh. 5

DIM1_EVN_ CS1_Lsh. 5 DIM1_EVN_ CS0_Lsh. 5

OR_A_24 OR_A_23

OR_A_22 OR_A_21

OR_A_20 OR_A_19

OR_A_18 OR_A_17

OR_A_16 OR_A_15

OR_A_14 OR_A_13

OR_A_12 OR_A_11

OR_A_10 OR_A_9

OR_A_8 OR_A_7

OR_A_6 OR_A_5

OR_A_4 OR_A_3

OR_A_2 OR_A_1

RESET_Lsh. 1,3,9

ER_A_24 ER_A_23

ER_A_22 ER_A_21

ER_A_20 ER_A_19

ER_A_18 ER_A_17

ER_A_16 ER_A_15

ER_A_14 ER_A_13

ER_A_12 ER_A_11

ER_A_10 ER_A_9

ER_A_8 ER_A_7

ER_A_6 ER_A_5

ER_A_4 ER_A_3

ER_A_2 ER_A_1

DEBUG RS-232 INTERFACE (NOT USED IN PRODUCTION)

DEBUG_R XD

600 OHM @ 100MHz

MAX3221 _TOUT

600 OHM @ 100MHz

DNS

MAX3221_RIN

8

11

2 4 5 6 3 7

1 12 16

15

U31

RIN TIN

C1+ C1C2+ C2V+ V-

EN FORCEON FORCEOFF

VCC

MAX3221

DNS

ROUT TOUT

INVALID

9 13

10

GND

14

4

VCC33

J11

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84

CONN_SOC KET_DIMM84X2

DNS

L9

L10

C167

DNS

1000pF

4

DNS

C168

1000pF

3

OR_D_[15: 0] sh. 5

SMCS_Lsh. 1

VCC

85 86

OR_D_15

87 88

OR_D_14

89 90

OR_D_13

91 92

OR_D_12

93 94

OR_D_11

95 96

OR_D_10

97 98

OR_D_9

99 100

OR_D_8

101 102

OR_D_7

103 104 105 106

OR_D_6

107 108

OR_D_5

109 110

OR_D_4

111 112

OR_D_3

113 114

OR_D_2

115 116

OR_D_1

117 118

OR_D_0

119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168

ER_D_15

ER_D_14

ER_D_13

ER_D_12

ER_D_11

ER_D_10

ER_D_9

ER_D_8

ER_D_7

ER_D_6

ER_D_5

ER_D_4

ER_D_3

ER_D_2

ER_D_1

ER_D_0

J16

1 6 2 7 3 8 4 9 5

DB9

ROM_ODD _OE_L

OR_WE _L

DIM_WP _L sh. 1

ROM_EVN _OE_L sh. 5

ER_WE _L sh. 5

DNS

sh. 5

C260

0.1uF

VCC

ER_D_[15: 0]

VCC33

sh. 5

C261

0.1uF

R72

1.0K

1 2 3 4

DIM_BUSY_L

sh. 1

RN31

8 7 6 5

1.0K

9

CPU_RD_ L

sh. 1,9

CPU_A_[25 :0]

sh. 1,2,3,9

U46_SPA RE_OE

U46A_OE _L U46B_OE _L

GLCD_RD _Lsh. 9

GLCD_ WR_Lsh. 9

UART_CS _Lsh. 1,9

UART_RD _Lsh. 9

UART_ WR_Lsh.

CPU_D_[31 :0]sh. 1,2,3,9

RESETsh. 1,9

SMWR_ Lsh. 9

SMW Psh. 1 SMRDYsh. 1

SMPWR _Lsh. 1

5

6

NC7WZ 08

SMRD_Lsh. 9

CPU_A_3 CPU_A_2

CPU_A_1

sh. 4,9

CPU_WR _BUF_L

LCDEsh. 9

GLCD_CE _Lsh. 9

CPU_D_[31 :0]sh. 1,2,3,9

U46A_OE _L

2 3

VCC33

DNS

CPU_A_2 CPU_A_1 CPU_A_0

CPU_D_7 CPU_D_6 CPU_D_5 CPU_D_4 CPU_D_3 CPU_D_2 CPU_D_1 CPU_D_0

C169

0.1uF

3

29 30 31

16 15 14 28

25 24 21 20

9 8 7 6 5 4 3 2

39

44

22

U7B

3

1

U46A

74AHCT1 25

U30

DNS

A2

BAUDOUT A1 A0

CS2 CS1 CS0 ADS

RD RD WR WR

D7 D6 D5 D4 D3 D2 D1 D0

MR

VCC

GND

ST16C55 0CJ44

RCLK

SOUT

RTS CTS

DTR DSR DCD

OUT1 OUT2

TXRDY

RXRDY

INTR

DDIS

XOUT

NC1

NC2

NC3

NC4

C281

0.1uF

| Fr om UART U30 |

U28B_OE _L

5 6

17 10

11

SIN

13

36 40 37 41 42 43

RI

38 35

27 32

33 26 18

XIN

19

1 12 23 34

UART_RX D UART_TX D

RTS_L CTS_L

4

U28B

74AHCT1 25

LCD_CS_ Lsh. 1,9

UART_RX D

RTS_L CTS_L

VCC33

C282

0.1uF

SM_D_4 SM_D_3 SM_D_2 SM_D_1

GLCD5V_ RD_L

DNS

R74 0

R33 22

CPU_IRQ_5 _L sh. 1,9

DNS

X4

DNS

3.6864 MH z

C170

33pF

9 8

12 11

GLCD5V_ CE_L

DNS

R49

1.0M

DNS

1 3 5 7

9 11 13 15 17 19 21 23 25 27

HEADER 1 4X2

10

U28C

74AHCT1 25

13

U28D

74AHCT1 25

CPU_D_0 CPU_D_1 CPU_D_2 CPU_D_3 CPU_D_4 CPU_D_5 CPU_D_6 CPU_D_7

DEBUG_R XD

C164

0.1uF

2 4

DNS

C171

33pF

SM_D_[7:0 ]

J12

2 4 6 8 10 12 14 16 18 20 22 24 26 28

U46B_OE _L

VCC33

2

SMARTMEDIA INTERFACE

SM_D_5 SM_D_6 SM_D_7 SM_D_0

SMRD_L CPU_A_2CPU_A_3

U28_C_D _OE_L

R44

100

R45

100

R46

100

VCC

C159

0.1uF

GLCD5V _WR_L

DNS

9 8

U29

9

A7

8

A6

7

A5

6

A4

5

A3

4

A2

3

A1

2

A0

1

DIR

19

G

5 6

DNS

R152 0

DNS

53

U32

NC7SZ14

10

U46C

74AHCT1 25

VCC

20

10

4

U46B

74AHCT1 25

UART_TX D

U46C_OE _L

B7 B6

VCC

B5 B4 B3 B2 B1 B0

GND

74AHCT2 45

DEBUG_T XD

2

11 12 13 14 15 16 17 18

CPU_IRQ_3 _L sh. 1

BRITEsh. 9

VCC33

R43

10K

SMCIP_L sh . 1

VCC33

20

U27 SM_D_7 SM_D_6 SM_D_5 SM_D_4 SM_D_3 SM_D_2 SM_D_1 SM_D_0 CPU_D_0

SM_DOE_ L

VCC

C265

DNS

0.1uF

R50

1.0K

18 17 16 15 14 13 12 11

19

1

LCD_CON Tsh. 1

J17

1

VCC

2

GND

3

GND

4

BRITE

HEADER 4

U27

A0

B0

A1

B1

VCC

A2

B2

A3

B3

A4

B4

A5

B5

A6

B6

A7

B7

OE T/R

GND

10

74LV245 A

25V

LCD_D4 LCD_D5 LCD_D6 LCD_D7

C264

0.1uF

LCD_RES ET_Lsh. 9

DNS

1

C155

0.1uF

CPU_D_7

2

CPU_D_6

3

CPU_D_5

4

CPU_D_4

5

CPU_D_3

6

CPU_D_2

7

CPU_D_1

8 9

VCC

C24

0.1uF

1

U28A

2 3

74AHCT1 25

VCC

L8

L8 FBEAD_S MT

FBEAD_S MT

C157

0.1uF

LCD_D0 LCD_D1 LCD_D2 LCD_D3

R48

Title

Size Document N umber Rev

2.5 Turn Ferrite Bead

C158

0.1uF

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

1

2

3

4

7

6

5

8

9 10

11 12 13 14 15 16 17 18

10K

Young Chang R&D Institute

1432 Main St. Waltham MA 0245 1 USA

Date: Sheet

19

20

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

PC3 ENGIN E BOARD ASSEMB LY

ROM DIMMS , SmartMedia I nterface, LCD, etc.

By

R. Folk

Monday, Decemb er 03, 2007

CPU_D_[31 :0] sh. 1,2,3,9

USB_D+ sh. 1 USB_D- sh. 1

USB_VBU S sh. 1

RN32

U28A_OE _L U28B_OE _L U28_C_D _OE_L U46C_OE _L

J13

VSS VDD VEE RS R/W E D00 D01 D02 D03 D04 D05 D06 D07 BKLT+ BKLT-

HEADER 8X 2

J15

FGND GND

VCC VEE

CS RD WR C/D

NC1 RESET

D00 D01 D02 D03 D04 D05 D06 D07

FS

NC2

HEADER 1 0X2

1

RN32

1 2 3 4

1.0K

U46_SPA RE_OE

DNS

CHARACTER LCD INTERFACE

DNS

C160

0.1uF

0.1uF 25V

GRAPHIC LCD

021304 RE VC

DNS

R47

10

VCC

8 7 6 5

VCC

13

U46D

12 11

74AHCT1 25

VCC

3 2 1

HEADER3

+12V

LCD Backlight LED voltage.

of

6 9

C273

0.1uF

J14

DNS

RCV2

6-8

Engine Board Assembly–DAC, Main Outs (7 of 9)

5

M1_SD_O UT_3

M1_I2S_BITC LKsh. 3

D D

C C

B B

M1_I2S_SYNCsh. 3

VCC33

R175 10K

R176

10K

M1_SD_OU T_[3:0]sh. 3

VCC33

R57

R60

R56

10K

DAC_CSNsh. 1 DAC_CDT Ish. 1 DAC_CCL Ksh. 1

DAC_PDNsh. 1

R61

1.0K

+12V

C182

0.1uF

U34

IN1OUT

2

GND

LM340

U55

2

DIN1

3

DIN2

6

DIN3

7

DIN4

1

EN

8

EN

DS90LV0 47A

DAC_CLK 12_288sh. 4

3

+5VANA

C183

0.1uF

VCC33

4

VCC

DOUT1+

DOUT1-

DOUT2+

DOUT2-

DOUT3+

DOUT3-

DOUT4+

DOUT4-

GND

5

z

600 OHM @ 100MHz

C184

10uF

15 16

14 13

11 12

10 9

M1_SD_O UT_3 M1_SD_O UT_2 M1_SD_O UT_1 M1_SD_O UT_0

VCC_DAC

L12

2

+

C284

0.1uF

AES_D_P AES_D_N

BITCLK_P BITCLK_N

LRCLK_P LRCLK_N

8-CHAN D/A CONVERTER

23 24 29 30 27 28 25 26 22

13 16 15 14

9 17 10 31

6 21 20 19 18

8

7

11 12

35 36

34

GND Join should be placed as close to AK4358 DAC as possible.

C180

0.1uF

PHONES MON MAIN

C185

0.1uF

U33

DSDL4 DSDR4 DSDL3 DSDR3 DSDL2 DSDR2 DSDL1 DSDR1 DCLK

SDTI4 SDTI3 SDTI2 SDTI1

BICK LRCK MCLK DIF0

CAD0 CSN/CAD1 CDTI/SDA CCLK I2C

PDN

ACKSN

DVDD DVSS

AVDD AVSS

VREFH

AK4358V Q

1 2 3 4 5 6

R156

0

AES_D_P AES_D_N BCLK_P BCLK_N LRCK_P LRCK_N

HEADER 6

LOUT1+

LOUT1-

ROUT1+

ROUT1-

LOUT2+

LOUT2-

ROUT2+

ROUT2-

LOUT3+

LOUT3-

ROUT3+

ROUT3-

LOUT4+

LOUT4-

ROUT4+

ROUT4-

DZF3 DZF2 DZF1

4

J33

MAINOUTL+

2

MAINOUTL-

1

MAINOUTR+

48

MAINOUTR-

47

46

AUXOUTL + sh. 8

45

AUXOUTL - sh. 8

44

AUXOUTR + sh. 8

43

AUXOUTR - sh. 8

42

PHONESL + sh. 8

41

PHONESL - sh. 8

40

PHONESR + sh. 8

39

38 37

33 32

3 4 5

PHONESR - sh. 8

LOUT4+

LOUT4-

ROUT4+

ROUT4-

1

HEADER_ POST

1

HEADER_ POST

1

HEADER_ POST

1

HEADER_ POST

TP11

TP12

TP13

TP14

DNS

MAIN AUDIO OUTPUTS

R52

4.75K C173

1000pF

R54

4.75K

R58

11.8K

R64

4.75K C177

1000pF

R66

4.75K

R68

11.8K

R77

4.75K C186

1000pF

R79

4.75K

R81

11.8K

R85

4.75K C190

1000pF

R87

R87 R88

4.75K

R89

11.8K

R53

4.75K

R55

R65

4.75K

R67

4.75K

R78

4.75K

R80

4.75K

R86

4.75K

R51

11.8K

R59

11.8K

R75

11.8K

R84

11.8K

3

C174

270pF

C178

270pF

C187

270pF

C191

270pF

C172

270pF

2

3

C175

270pF

6

5

C181

270pF

2

3

C188

270pF

6

5

-

+

-

+

-

+

-

+

U35A

NJM4580 E

84

U35B

NJM4580 E

U36A

NJM4580 E

84

U36B

NJM4580 E

2

CABLE TO

MUTING RELAYS

RY1

9

8

1

+12V

C176

0.1uF

7

C179

0.1uF

-12V

1

+12V

+

C269

10uF

-12V

10uF

C270

10uF

+

-12V

+12V

C189

0.1uF

7

C192

0.1uF

7 2

3

4

1 10

5VDC

RY2

9

8 7 2

3 4

1

10

5VDC

RELAY DRIVER

D3

PUP_MUT E_Lsh. 9

MUTE_Lsh. 1

BAS16

R83

10K

13

D4

1 3

BAS16

R82

1.0K

3

Q2

1

MMBT222 2A

2

MON_L+sh. 8 MON_L-sh. 8 MON_R+sh. 8 MON_R-sh. 8

PHONES_ Lsh. 8 PHONES_ Rsh. 8

MON_L and MON_R channel polarities are intentionally swapped at J18 connector to be consistent with updated Rev B CONNECTOR board.

VCC VCC

R76

4.75K 2

Q1

1

MMBT290 7A

3

D5 S1A

CONNECTOR BOARD

10 11 12

+

C266

10uF

J18

1 2 3 4 5 6 7 8 9

HEADER 12

AUDIO OUT

MUTE_RE LAY sh. 8

Kurzweil PC3x Service Manual

1

MAIN L + MAIN L AGND1 MAIN R + MAIN R MON L MON L + MON R MON R + AGND2 PHONES L PHONES R

A A

Young Chang R&D Institute

1432 Main St. Waltham MA 0245 1 USA

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

Title

PC3 ENGI NE BOARD ASSEM BLY

DAC, Mai n Outs

Size Doc ument Number Rev

By

R. Folk

Date: Sheet

5

4

3

2

Monday, Decemb er 03, 2007

021304 R EVC

1

7 9

RCV2

of

...

6-9

Kurzweil PC3x Service Manual

D D

C C

Engine Board Assembly–Aux and Headphone Outs (8 of 9)

5

4

AUXOUTL -sh. 7

AUXOUTL +sh. 7

AUXOUTR -sh. 7

AUXOUTR +sh. 7

3

R91

4.75K

R93

4.75K

R97

4.75K

R99

4.75K

R103

4.75K

R105

4.75K

C194 1000pF

R95

11.8K

C198 1000pF

R101

11.8K

C202 1000pF

R107

11.8K

R92

4.75K

R94

4.75K

R98

4.75K

R100

4.75K

R104

4.75K

R106

4.75K

R90

11.8K

R96

11.8K

R102

11.8K

C195

270pF

C199

270pF

C203

270pF

C193

270pF

2

3

C196

270pF

6

5

C201

270pF

2

3

2

U37A

1

+

NJM4580 E

+12V

84

U37B

-

+

NJM4580 E

U38A

-

+

NJM4580 E

C197

0.1uF

7

C200

0.1uF

-12V

1

RY3

9

8 7 2

3 4

1

10

5VDC

C

RY4

9

8 7 2

3 4

1

10

5VDC

MON_L- sh. 7

MON_L+ sh. 7

MON_R- sh. 7

MON_R+ sh. 7

1

C272

10uF

C271

10uF

+12V

+

-12V

R108

C204

11.8K

R109

R114

11.8K

C207

R122

11.8K

C213

270pF

C220

270pF

2

3

C216

270pF

2

3

U39A

1

+

NJM4580 E

U40A

1

+

NJM4580 E

R118

10.0K

R126

10.0K

C210 1000pF

R121

11.8K

C217 1000pF

R129

11.8K

R117

4.75K

R120

4.75K

R125

4.75K

R128

4.75K

B B

A A

PHONESL +sh. 7

7

PHONESL -sh.

PHONESR +sh. 7

7

PHONESR -sh.

R116

4.75K

R119

4.75K

R124

4.75K

R127

4.75K

R115

10.0K

84

U39B

6

7

5

+

NJM4580 E

R123

10.0K

84

U40B

6

7

5

+

NJM4580 E

-12V

+12V

C211

0.1uF

C214

0.1uF

C218

0.1uF

C221

0.1uF

+

C212 10uF

+

C215 10uF

+

C219 10uF

+

C222 10uF

RY5

9

8 7 2

3 4

1

10

5VDC

4.75K

R111

4.75K

C206 1000pF

R113

11.8K

R110

4.75K

R112

4.75K

270pF

6

-

5

+

C208

270pF

PHONES_ L sh. 7

PHONES_ R sh. 7

84

U38B

NJM4580 E

7

C205

0.1uF

C209

0.1uF

+12V

-12V

MUTE_RE LAYsh. 7

6-10

Young Chang R&D Institute

1432 Main St. Waltham MA 0245 1 USA

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

Title

PC3 ENGI NE BOARD ASSEM BLY

Aux and Headphone Outs

Size Doc ument Number Rev

By

R. Folk

Date: Sheet of

5

4

3

2

Monday, Decemb er 03, 2007

021304 R EVC

1

8 9

RCV2

Engine Board Assembly–Mictors, CPLD, Power (9 of 9)

5

DNS

J19

1

NC1

3

GND

38 37 32 31 30 29

42 41 40 39

44 43 34 36 33

11 10

3 2

1

9

5

U45

I/O I/O I/O I/O I/O I/O

I/O/GCK3 I/O/GCK2 I/O/GCK1 I/O/GTS2 I/O/GTS1 I/O/GSR

TDI TCK TMS

5 7

9 11 13 15 17 19 21 23 25 27 29 31 33 35 37

MICTOR

1

3

5

7

9 11 13 15 17 19 21 23 25 27 29 31 33 35 37

MICTOR

1

3

5

7

9 11 13 15 17 19 21 23 25 27 29 31 33 35 37

MICTOR

15

VCC35VCC

GND4GND17GND

CLK1 D15_1 D14_1 D13_1 D12_1 D11_1 D10_1 D9_1 D8_1 D7_1 D6_1 D5_1 D4_1 D3_1 D2_1 D1_1 D0_1

J22

NC1 GND CLK1 D15_1 D14_1 D13_1 D12_1 D11_1 D10_1 D9_1 D8_1 D7_1 D6_1 D5_1 D4_1 D3_1 D2_1 D1_1 D0_1

J24

NC1 GND CLK1 D15_1 D14_1 D13_1 D12_1 D11_1 D10_1 D9_1 D8_1 D7_1 D6_1 D5_1 D4_1 D3_1 D2_1 D1_1 D0_1

VCC33

26

25

VCCIO

TDO

I/O I/O I/O I/O I/O I/O I/O I/O

VCC33

G240

39 G1

DNS

G240

39 G1

DNS

G240

39 G1

C239

0.1uF

28 27 23 22 21 20 19 18

16 14 13 12 8 7 6 5

24

XC9536XL -5VQG44C

C252

0.1uF

CPU_W R_Lsh. 1,4

CPU_RD_ Lsh. 1,6 SDRAM_R AS_Lsh. 1 SDRAM_C AS_Lsh. 1

SDRAM_C S_Lsh. 1

CPU_WAI T_Lsh. 1,2,3

CPU_BS_ Lsh. 1

D D

CPU_A_[25 :0]sh. 1,2, 3,6

SDRAM_C LKsh. 1

C C

B B

CPU_D_[31 :0]sh. 1,2,3,6

M2_DREQ _Lsh. 1,2 M2_DACK _Ls h. 1,2 M1_DREQ _Lsh. 1,3 M1_DACK _Ls h. 1,3 LCD_CS_ Lsh. 1,6 UART_CS _Lsh. 1,6

SMARTMEDI A_CS_Lsh . 1

FLASH_C S_Lsh. 1 BOOT_CS _Lsh. 1

CPU_A_2 5 CPU_A_2 4 CPU_A_2 3 CPU_A_2 2 CPU_A_2 1 CPU_A_2 0 CPU_A_1 9 CPU_A_1 8 CPU_A_1 7 CPU_A_1 6

CPU_D_1 5 CPU_D_1 4 CPU_D_1 3 CPU_D_1 2 CPU_D_1 1 CPU_D_1 0

CPU_D_9 CPU_D_8 CPU_D_7 CPU_D_6 CPU_D_5 CPU_D_4 CPU_D_3 CPU_D_2 CPU_D_1 CPU_D_0

MARA_2_ SEL_L MARA_1_ SEL_L MARA_2_ CS_L MARA_1_ CS_L DSP_RES ET_SEL_L DSP_RES ET_L

Fin

FLRD_Lsh. 1

GLCD_ WR_Lsh. 6

GLCD_RD _Lsh. 6

CPU_RD_ Lsh. 1,6

GLCD_CE _Lsh. 6

SDRAM_C LKsh. 1

CPU_WAI T_Lsh. 1,2,3

SMWR_ Lsh. 6

RESET_Lsh. 1,3,6

A A

BiDir

LCDEsh. 6

XC9536X L

2

NC2

4

NC3

6

CLK2 D15_2 D14_2 D13_2 D12_2 D11_2 D10_2

D9_2 D8_2 D7_2 D6_2 D5_2 D4_2 D3_2 D2_2 D1_2

G341

G442

G543

D0_2

NC2 NC3

CLK2 D15_2 D14_2 D13_2 D12_2 D11_2 D10_2

D9_2 D8_2 D7_2 D6_2 D5_2 D4_2 D3_2 D2_2 D1_2

G341

G442

G543

D0_2

NC2 NC3

CLK2 D15_2 D14_2 D13_2 D12_2 D11_2 D10_2

D9_2 D8_2 D7_2 D6_2 D5_2 D4_2 D3_2 D2_2 D1_2

G341

G442

G543

D0_2

C240

CPU_A_1 5

8

CPU_A_1 4

10

CPU_A_1 3

12

CPU_A_1 2

14

CPU_A_1 1

16

CPU_A_1 0

18

CPU_A_9

20

CPU_A_8

22

CPU_A_7

24

CPU_A_6

26

CPU_A_5

28

CPU_A_4

30

CPU_A_3

32

CPU_A_2

34

CPU_A_1

36

CPU_A_0

38

2 4 6

CPU_D_3 1

8

CPU_D_3 0

10

CPU_D_2 9

12

CPU_D_2 8

14

CPU_D_2 7

16

CPU_D_2 6

18

CPU_D_2 5

20

CPU_D_2 4

22

CPU_D_2 3

24

CPU_D_2 2

26

CPU_D_2 1

28

CPU_D_2 0

30

CPU_D_1 9

32

CPU_D_1 8

34

CPU_D_1 7

36

CPU_D_1 6

38

2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38

C241

0.1uF

(Buffered CPU_WR_L)

CPU_WR _BUF_L sh. 4,6

MARA_2_ SEL_L sh. 1 MARA_1_ SEL_L sh. 1

MARA_2_ CS_L sh. 2 MARA_1_ CS_L sh. 3FLWR_ Lsh. 1

DSP_RES ET_SEL_L sh. 1

DSP_RES ET_L sh. 2,3

LCD_CS_ L sh . 1,6 UART_CS _L sh. 1,6 SMARTMEDI A_CS_L sh. 1 FLASH_C S_L sh. 1 UART_ WR_L sh. 6

UART_RD _L sh. 6

SMRD_L sh. 6

J29

1

TMS

GND

3

TDI

TCK

5

TDO

VCC

HEADER 3X 2

CPU_NMI_L sh. 1 CPU_IRQ_5 _L sh. 1,6 RESET_L sh. 1,3,6

2 4 6

4

R157 20K

PWRUPR ST_L

4

VCC

DNS

R143

2.0K

C250

2.2uF

C267

10uF

1 2

HEADER 2

VCC

VCC33

+

C268

10uF

C244 22uF

J27

DNS

3 4

U44B

+

C228

4700pF

+

C232

4700pF

74HC14

C246 22uF

Reset

R130

15.0K

R134

15.0K

C245

0.1uF

C247

10000pF

BAS16

J20

+ +

231

C225

0.1uF

C229

56pF

C236

0.1uF

C233

56pF

VCC

D10

13

-

VCC

VCC33

BV32

2

4

3

2

4

3

U47

1

VIN

3

ON_OFF

4

BYPASS

LP2992-V 2_5

R148 20K

5 6

U41 Swit Reg.

VCC

COMP

GND

U43 Swit Reg.

VCC

COMP

GND

U44C

+VBAT sh. 1

BST

SWN

GH

SP6123

BST

SWN

GH

SP6123A

VOUT

GND

2

74HC14

GL

FB

GL

FB

3

D6

BAS16

8

6

7

1

5

R131

10.0K

D8

BAS16

8

6

7

1

5

R133

10.0K

This divider results in VCC18 = 1.84V

J26

C248

10uf

C249

0.1uF

U44D

74HC14

3

R179

0

5

9 8

C223

+

220uF

J21

/PWRUPRST

BRITE

/MUTE

+12V

AGND

-12V

5V_DIG

DGND

POWER CON8

MOLEX_417 91-8

13

C226

0.1uF

R132

31.6K

should be 31.25K

13

C238

0.1uF

R135

13.0K

DNS

HEADER3

123

VCC

U9D

147

9 8

74VHC05

C224

+

220uF

VCC25

VCC

8 7 6 5 4 3 2 1

4

2

4

2

VCC

R146

1.0K

L13 FBEAD_S MT

2.5 Turn Ferrite Bead

PWRUPR ST_L

BRITE sh. 6 PUP_MUT E_Lsh. 7

6

5

U42B

FDS9926 A

3

8

7

U42A

FDS9926 A

1

6

5

U49B

FDS9926 A

3

8

7

U49A

FDS9926 A

1

C253

0.1uF

C262

10000pF

U9E

147

11 10

74VHC05

POWER

VCC33VCC33

C227

0.1uF

C237

0.1uF

VCC33

+12V

-12V

D7 SMB5817

D9 SMB5817

U48

1

VIN

3

ON_OFF

4

BYPASS

LP2992-V 1_5

R149

1.0K

13 12

22uH

L15

22uH

2

123

HEADER3

123

HEADER3

TP2

HEADER_ POST

1

VCC33

VCC18

VCC15

TP1

HEADER_ POST

1

J23

DNS

L14

C230

+

220uF

C242

+

220uF

5

VOUT

GND

2

C263

Low ESRLow ESR

10uf

C231

+

220uF

C235

+

220uF

R180

0

R182

0

R181

0

1206

J25

1206

J34

DNS

TP3

HEADER_ POST

1

VCC

TP4

HEADER_ POST

1

VCC

DNS

1

TP9

HEADER_ POST

TP5

HEADER_ POST

1

DNS

R144

1 2

2.0K

NMI

U44E

11 10

+

C251 10uF

74HC14

Young Chang R&D Institute

1432 Main St. Waltham MA 02451 USA

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

Title

PC3 ENGINE BOARD ASSEMBLY

Mictors, CPLD, Powe r

Size Doc ument Number Rev

By

Date: Sheet

D11

2

BAS40

R. Folk

Monday, Decembe r 03, 2007

J28

DNS

VCC33

R147

U9F

147

74VHC05

1.0K

RESET sh. 1,6

RESET_L sh. 1,3,6

LCD_RES ET_L sh. 6

2

HEADER 2

R150 20K

Kurzweil PC3x Service Manual

1

U44A

74HC14

U44F

74HC14

U9B

74VHC05

U9C

74VHC05

of

TP8

HEADER_ POST

1

TP6

HEADER_ POST

VCC33

HEADER_ POST

13

1

DNS

1

TP10

VCC

C234

0.1uF

R140

1.0K

R145

1.0K

CPU_NMI_L sh. 1

021304 RE VC

TP7

HEADER_ POST

1

1 2

7 14

13 12

147

3 4

147

5 6

9 9

RCV2

6-11

Kurzweil PC3x Service Manual

TOUCHSENS

RESET_L

D D

+VBAT

J308

PITCH

MOD

AGND

EXPDL1 EXPDL2

BREATH

+5V

1 2 3 4 5

600 OHM @ 100MHz

L2

20 19 16 15

BRITE

18 17

14 13

12 11 10 9

BASS7

8

BASS6

7

BASS5

6

BASS4

5

BASS3

4

BASS2

3

BASS1

2

BASS0

1

R20 110R20 110

+5VREF

PRESSR

HEADER 5

RIBN_SLDR

J304

C C

DGND

-15V

BRITE

PHASEB

PHASEA

SENSE DRIVE

COLD COLC

COLB

COLA

ROW7 ROW6 ROW5 ROW4 ROW3 ROW2

B B

ROW1 ROW0

HEADER 10X2

PC3 FRONT PANEL

PARTS MUST BE NEAR

CONNECTOR COMPONENTS

A A

J304

J306

J307

J308

5

+5Vref

R115

1.0M

-12V

6 7 8

RN6

100

45 3 2 1

BASS7 BASS6 BASS5 BASS4

BASS3 BASS2 BASS1 BASS0

C1 1000pF

R1 10K

PHASEB

R17 110R17 110

6 7 8

VCC

6 7 8

L2, R117, R20, RN6- 8

RN1- 3

RN4- 5

RN11, C1- 3

5

R105

1.0M

RN7

100 RN8

100

RN10

10K

R2 10K

PHASEA

45 3 2 1

C2 1000pF

VCC

PORT87 PORT86 PORT85 PORT84

PORT83 PORT82 PORT81 PORT80

PORT87 PORT86 PORT85 PORT84

R92

1.0M

R24 10K

C3 1000pF

TESTPOINT

TP1

CLOCK

R22

2

1.5K

33pF

PORT83 PORT82 PORT81 PORT80

MONOSENSE_L

IACK_L TOUCH1 TOUCH2 TOUCH3

Connector Board–M38869 Scanner (1 of 4)

4

VCC

R23

10K

R11

C45

5

0.1uF

+5Vref

L1

C49

0.1uF

VPP

PORT[80:87]

RN12

6 7 8

10K

FTSW3 FTSW2 FTSW1

RN11

6 7 8

10K

R16 1.0M

Y1

10.0000MHz

VCC

45 3 2 1

4

45 3 2 1

C5 33pF

R116

4.7M

1.0M

I2C_SCL I2C_SDA

SRC_MUTE SRC_RDY_L SRC_LOCK_L

SRC_INT_L

600 OHM @ 100MHz

VCC

R21

10K

3

PWRUPRESET OUT

TP2

TESTPOINT

U1

25

RESET

55

P[37]/O E

56

P[36]

74

AN[7]/P[67]

75

AN[6]/P[66]

76

AN[5]/P[65]

77

AN[4]/P[64]

78

AN[3]/P[63]

79

AN[2]/P[62]

80

AN[1]/P[61]

1

AN[0]/P[60]

31

P[27]

32

P[26]

33

P[25]

34

P[24]

35

P[23]

36

P[22]

37

P[21]

38

P[20]

2

P[77]/SCL

3

P[76]/SDA

4

P[75]/INT41

5

P[74]/INT31

6

P[73]

7

P[72]

8

P[71]

9

P[70]

29

XOUT

28

XIN

72

VREF

73

AVSS

71

VCC

30

VSS

24

CNVss

M38869FFAGP

VCC

P[47]

SCLK/P[46]

TxD/P[45]

RxD/P[44] INT1/P[43] INT0/P[42]

P[41] P[40]

P[17] P[16] P[15] P[14] P[13] P[12] P[11] P[10]

P[07] P[06] P[05] P[04] P[03] P[02] P[01] P[00]

P[57] P[56] P[55] P[54] P[53] P[52] P[51] P[50]

P[35] P[34] P[33] P[32] P[31] P[30]

P[87]/DQ7 P[86]/DQ6 P[85]/DQ5 P[84]/DQ4 P[83]/DQ3 P[82]/DQ2 P[81]/DQ1 P[80]/DQ0

R12

18 19 20 21 22 23 26 27

39 40 41 42 43 44 45 46

47 48 49 50 51 52 53 54

10 11 12 13 14 15 16 17

57 58 59 60 61 62

63 64 65 66 67 68 69 70

10K 2

PORT57 PORT56 PORT55 PORT54 PORT53 PORT52 PORT51 PORT50

MUXB2 MUXB1 MUXB0

PORT87 PORT86 PORT85 PORT84 PORT83 PORT82 PORT81 PORT80

MUXA2 MUXA1 MUXA0

Place D19-D22 between J306 and J307 near edge of board.

SEE NOTE "A", ON PAGE 3, FOR D19-D22 OPTION DEFINITION TABLE

PORT53 PORT52 PORT51 PORT50

2 3 4 5 6 7 8 9

1

19

U2

A1 A2 A3 A4 A5 A6 A7 A8

G1 G2

74HC541

3

18

Y1

17

Y2

16

Y3

15

Y4

14

Y5

13

Y6

12

Y7

11

Y8

BASS[0:7]

VCC

PORT50 PORT51 PORT52 PORT53 PORT54 PORT55 PORT56 PORT57

RN13

6 7 8

10K

45 3 2 1

PORT57 PORT56 PORT55 PORT54

BASS7

BASS6

BASS5

BASS4

6 7 8

VCC

RN9

10K

2

PHASEB

PHASEA

RN14

45

10K

RN3

6 7 8

100

RN4

6 7 8

100 RN5

6 7 8

100

D22 LL4148

D21 LL4148

D20 LL4148C4

D19 LL4148

VCC

45 3 2 1

3 2 1

PORT57

PORT[50:57]

45 3 2 1

PORT56 PORT55 PORT54

PORT53 PORT52 PORT51 PORT50

6 7 8

Young Chang R&D Institute

1432 Main St. Waltham MA 02451 USA

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

Title

PC3 Connector Board

M38869 Scanner

Size Document Number Rev

By

H. Chamberlin

Friday, December 14, 2007

Date: Sheet of

6 7 8

2

RN1

100

RN2

100

1

VPP

45 3 2 1

BASS7 BASS6 BASS5 BASS4 BASS3 BASS2 BASS1 BASS0

C6

1000pF

021221-002

1 4

1

PWRUPRST

INTMIDIRxD

INTMIDITxD IRQ_L SRC_RST_L

DEBUG

J321

1

10

SCLK

9

BUSY

8

OE

7

VPP

6

RESET

5

IRQ

4

SDATA

3

GND

2

RXD

1

TXD

HEADER 5X2

FATAR 88 TREBLE

J306

16

T7

14

T6

12

T5

10

T4

8

T3

6

T2

4

T1

2

T0

18

BR10

20

MK10

19

BR9

17

MK9

15

BR8

13

MK8

11

BR7

9

MK7

7

BR6

5

MK6

3

BR5

1

MK5

HEADER 10X2

FATAR 88 BASS

J307

16

T7

14

T6

12

T5

10

T4

8

T3

6

T2

4

T1

2

T0

18

NC

20

NC

19

BR4

17

MK4

15

BR3

13

MK3

11

BR2

9

MK2

7

BR1

5

MK1

3

BR0

1

MK0

HEADER 10X2

RCV2

6-12

Connector Board–MIDI, Pedals, Ribbon, LCD Contrast (2 of 4)

5

+5Vref

R66

2.2K

R68 110

C10 1000pF

R69 110

C11 1000pF

R63

1.5M

C12

0.1uF

C13

0.1uF

R71

1.0M

R72

1.0M

C9 1000pF

R67 121K

+12V

C8

1000pF

3 4 5 2 1 6

Q1

MMBT2907A

D D

EXPRESSION PEDAL 1

J313

1/4"

EXPRESSION PEDAL 2

J314

1/4"

C C

BREATH CONTROL

J315 1/8"

B B

RIBBON

J316

RBN/XYZ

MOD JACK 6-PIN

A A

REF-

REF+

SEC2/Y

SEC3

SEC1/X

SENSE

3 5 4 2 1

1 2 3 4 5 6

MMBT2222A

R65

110

5

-12V

Q2

10uF

+

C7

R76 680K

D6

LL4148

R77 10K

5

-12V

R64

165K

R78 680K

D7

LL4148

MMBT2907A

Q3

R79 680K

D8

LL4148

R80

20K

-

6

+

5

-12V

D9

LL4148

TP3

D1 LL4148

D2 LL4148

D3 LL4148

D4 LL4148

8

TL072

7

4

U8B

R81

R81 150

150

TOUCHSENS

VREF TESTPOINT

10K

D10

0

LL4148

EXPDL1

EXPDL2

D16

LL4148

R70

0

D11

LL4148

R83

270

4

DIN5

46275

22

VCC

R98

110

1

C19

1000pF R97

1000pF

C2

R101

SLIDER

J305

OUT

SLDR9

MUX2 MUX1 MUX0

GND

8 7 6 5 4 3 2 1

-12V

5

4

+

-

R88 100K

6

D5 LL4148

R85 10K

R86 10K

1

+5Vref

D12

S1A

BREATH

R84

10K

R82

1.5K

4

VOLUME

+5Vref

HEADER 8

R87 1.0K

OUT OUT/ THRU

2

54 3 53

54 3

1

3

23

11

R95 110

VCC

110110

C18

+

-

9

8

+5Vref

MUXB2 MUXB1 MUXB0

R89 100K

U4B

2

LM339

+12V

12 3

+

-

1000pF

VCC

U4A

LM339

R90 100K

1

U4C

LM339

R149

220

7

6

IN

OUT/ THRU

2

54 31

8

139141224182016211925

10

C20

1000pF

R100

10K

VCC

220220 R94 110

R150 10K

TOUCH1

VCC

R91 100K

14

IN

2

141

15

R93

3

56

U11 74HC4051

13

X0

14

X1

15

X2

12

X3

1

X4

5

X5

2

X6

4

X7

TOUCH2

TOUCH3

3

53

17

C477

1000pF

VDD

VEE

GND

8

I2C_SDA

I2C_SCL

3

C17 1000pF

A B

C

X

EN

J320

R99

56 C22

R96 566

74LS05

VCC

16 11 10 9

3

6

7

MUXA0 MUXA1 MUXA2

RIBN_SLDR

R3 10K

CLOCK/CALENDAR

R102 56

1000pF

U5F

74LS05

C73

0.1uF

U318

16

DS1340C

1

3

D13

LL4148

VCC

R104 10K

VCC

R103 10K

74LS05

1312

U5E

1110

LCD Contrast Adjust

VCC33

3

14

VCC

VBACK

SDA

FT_OUT

1

SCL

4

NC1

5 6 7

NC10 NC2 NC3 NC4 NC58NC6

GND

15

NC9 NC8 NC7

2

13 12 11 10 9

U7

PC410

U5A

74LS05

U5B

R107

10K

12

2

VCC

6

4

OUT/THRU SELECT

SW1 SPDT

34

1

MMBT2222A

3

R118 10K

2

5

2

12 3

R108

39K

R109

11K

2

3

OUT

Q4

VCC

R106

3.0K

Usage table for U6, U7, R106, R175

Use only one row

DNS U6

PC910

R175

5

10K

THRU

VCC

R148

1.0K

-12V

+

C40 100uF

VCC

7

8

6

5

IRQ_L

+VBAT

J317 1/4"

J318 1/4"

J319 1/4"

U6 U7 R106 R175

DNS PC410 3K 10K

PC910 DNS 3K 10K

6N138 DNS 270 DNS

D18

13

2

BAS40

1 2 3 4

Young Chang R&D Institute

1432 Main St. Waltham MA 02451 USA

Title

Size Document Number

Date: Sheet of

.

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

PC3 Connector Board

MIDI, Pedals, Ribbon, LCD Contrast

By

H. Chamberlin

Friday, December 14, 2007

INTMIDIRxD INTMIDITxD

C14

1000pF

C15

1000pF

C16

1000pF

Kurzweil PC3x Service Manual

1

MIDI & CPU

J303

1

MIDI_RxD

2

CONT

3

MIDI_TxD

4

/IRQ

R13 10K

R10 10K

5 6 7 8 9

10

VCC

R9

10K

/IACK INT_RxD INT_TxD DIG_OUT GND +VBAT

HEADER 10

FTSW1

FTSW2

FTSW3

IACK_L

R73

110

R74

110

R75

110

021221-002

2 4

1

Rev RCV2

6-13

Kurzweil PC3x Service Manual

5

NOTE:

Connector Board–Power Supply, Audio (3 of 4)

4

3

2

1

PWRUPRST

D17 is a circuit pattern which accomodates either: 1 part GBU404 , or 4 parts 1N5821

D D

1000pF

C61 1000pF

R112

10K

C51

0.1uF

C57 1000pF

C58 1000pF

C60

Q6

MMBT2222A

VCC

D15 GBU404

VCC

R113

1.0M

C52

0.1uF

J324

9VACL

14VCT

5

D14

R111

R110

C50

0.1uF

1 2 3 4 5

1.0K

2.2K

+9V

9VACH

14VACH

14VACL

HEADER 5

C C

MMSZ5234B-7F

B B

A A

D17

~ ~

DISC_BRIDGE

C59 1000pF

- +

Q5

MMBT2222A

+

~ ~

-

C53

0.1uF

+

C55

10000uF

+

-

+

C30

C30 1,000uF

1,000uF

C31

+

1,000uF

RESET_L

+

C48 1uF

C54

0.1uF

ONE EACH AT GROUND PINS OF U1, U2, U5, U7, U11

5

C29

0.1uF

C33

0.1uF

+9V

C32

0.1uF

U308 KA78T05

IN1OUT

U312 LM78M12

IN1OUT

U313 LM79M12

D

VIN2VOUT

GN

1

+

R7 10

VCC

C36 100uF

C44

0.1uF

C35

0.1uF

+12V

C38

0.1uF

4

-12V

3

GND

2

GND

2

3

+

C34 100uF

3

C37

7

+

100uF

NOTE A: D22 D20 D21 D19 OPT4 OPT3 OPT2 OPT1 HEX Meaning

---- ---- ---- ---- ---- --------------------------------------------- 0 0 0 0 00 88 notes, TP/10-MDF-Leadfree 0 0 0 1 01 " TP/40H 0 0 1 0 02 " TP/40L 0 0 1 1 03 " -to be defined 0 1 0 0 04 76 notes, TP/8P 0 1 0 1 05 " -to be defined 0 1 1 0 06 " -to be defined 0 1 1 1 07 " -to be defined 1 0 0 0 08 61 notes, TP/8P 1 0 0 1 09 61 notes, TP/9P 1 0 1 0 0A " -to be defined 1 0 1 1 0B " -to be defined 1 1 0 0 0C Rack Unit, no keyboard, full control panel 1 1 0 1 0D " " minimal control panel 1 1 1 0 0E " -to be defined 1 1 1 1 0F " -to be defined-

4

R154

10K

3

BRITE

VCC

1

3

R114

2.4K

BRITE

2

U5C

74LS05

5 6

U5D

74LS05

9 8

+12V

-12V

VCC

J301

8

PWRUPRST

7

BRITE

6

MUTE

5

+12V

4

AGND

3

-12V

2

5V_DIG

1

DGND

PC88 II POWER

HEADER 8

J302

MAIN L +

MAIN L -

AGND

MAIN R +

MAIN R -

MON L-

MON L +

MON R -

MON R +

AGND PHONES L PHONES R

HEADER 12

2

R151 200

R152 200

VCC

R153 100K 3

R161

100K

R155 200

R156 200

R157 200

R158 200

1 2 3 4 5 6 7 8 9 10 11 12

R159 200

R160 200

R28 47

R29 47

MAIN LEFT/MONO

MONOSENSE_L

Young Chang R&D Institute

1432 Main St. Waltham MA 02451 USA

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

Title

PC3 Connector Board

Power Supply, Audio

Size Document Number

By

H. Chamberlin

B

Date: Sheet

Friday, December 14, 2007

021221-002

3 4

1

J311

3 4 5 2 1 6

J312

MAIN RIGHT

3 4 5 2 1 6

J322

AUX RIGHT

3 4 5 2 1 6

J323

AUX LEFT

3 4 5 2 1 6

J310

3 4 5 2 1 6

of

1/4"

Rev RCV2

6-14

Connector Board–Sample Rate Converter (4 of 4)

5

L4

T1

225uH

1

Y2

1

1 6

3 4

2

5

R167

100

Leave Open

VCC33

Y3

4

VCC33

OUT

EN

GND

2

VCC33

4

VCC33

OUT

EN

GND

2

1

100pF

2

VCC33

U316

13

RIN1+ RIN1-

RIN2+ RIN2-

RIN3+ RIN3-

RIN4+ RIN4-

EN

VCC

ROUT1

ROUT2

ROUT3

ROUT4

GND

2 1

3 4

6 5

7 8

16

9

12

3

CLK_OSC_OUT

3

SRC_TX_OUT

D D

R165

J325

AES_D_P

AES_D_N

BCLK_P BCLK_N LRCK_P LRCK_N

C C

HEADER 6

B B

1 2 3 4 5 6

VCC33

R30

R30 10K

10K

R120

R120 100K

100K

R119

R119 100K

100K

AES_D_P AES_D_N

I2S_BCLK_P I2S_BCLK_N

I2S_LRCK_P I2S_LRCK_N

VCC33

LVDS_EN

100

LVDS_EN_L

R166

100

C69

0.1uF

22.5792 MHz

C72

0.1uF

24.5760 MHz

4

15

14

11

10

DS90LV048ADS90LV048A

R16933R169

33

I2C_SCL I2C_SDA

J300

3

RCA

C67

0.1uF

AES_DATA

I2S_BCLK

I2S_LRCK

1

3 4

34

2

SRC_MUTE

SYNCH INSPDIF OUT

J309

RCA

VCC33

R162

2.7K

R31

R163

2.7K

3

RX1+ RX1-

RX2+ RX2-

RX3+ RX3-

RX4+ RX4-

RXCKI

SDINA BCKA LRCKA

SDINB BCKB LRCKB

MUTE

MCLK RST

A0 A1

SCL SDA CPM

9

VCC

DGND116DGND230DGND3

VCC33

33

42

VIO

VDD33

43

C23

+

10uF

17

8

VDD1

TX+

TX-

AESOUT

BLS

SYNC

LOCK

RXCKO

SDOUTA

SDOUTB

RDY

INT

GPO1 GPO2 GPO3 GPO4

BGND

AGND

10

44

Connect pin 44 to pin 10. Connect pin 10 to GND.

VCC33

1

100pF100pF

10K

L3

600 OHM @ 100MHz

2

(May also be a 2 to 10 ohm Res)

0805

3

VCC_SRC

C70 0.1uFC70 0.1uF

R475R4 75

C71 0.1uFC71 0.1uF

R170 100R170 100

R171 100 R172 100 R173 100

C24

+

10uF

4

1 2

3 4

5 6

7 8

13

39 37 38

46 48 47

C63

0.1uF

U314

14

MCLK

I2C_A0 I2C_A1

R25

R25 10K

10K

VCC33

25 24

19 21

20 22 18

SRC4382

2

VCC33

+

C39 100uF

C77

C46

6

0.1uF

VCC18

C62

0.1uF

C56

32 31

0.1uF

34 35 36

0.1uF

11

12

40

R17433R174

33

R6

220

RXCKO

SDOUT_A

R5 110

VCC33

C66

0.1uF

C65

.01uF

SRC_TX_OUT

TP4

TESTPOINT

VCC33

U315

1

VIN

3

ON_OFF

4

BYPASS

LP2992-V1_8

45

R26

R26 10K

15

SRC_RDY_L

10K

23

C74

0.1uF

C75

.01uF

VCC

U319

1

VIN

3

ON_OFF

4

BYPASS

LP2992-V3_3

26 27 28 29

CLK24M_EN CLK22M_EN

Kurzweil PC3x Service Manual

1

VCC18

5

VOUT

C64 10uf

0805

GND

2

SRC_LOCK_L

TP5

TESTPOINT

SRC_INT_L

VCC33

5

VOUT

C76

C76 10uf

10uf 0805

0805

GND

2

R117

SRC_RST_L

2.2K

A A

RN15

1 2 3 4

100

8 7 6 5

5

R164

3.3K

4

3

2

Young Chang R&D Institute

1432 Main St. Waltham MA 02451 USA

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

Title

PC3 Connector Boar

Sample Rate Converter

Size Document Number Rev

By

H. Chamberlin

B

Date: Sheet

Friday, December 14, 2007

021221-002

4 4

1

RCV2

of

6-15

Kurzweil PC3x Service Manual

D D

SP1

PHASEA

COMMON

PHASEB

Front Panel

J202

C C

PHASEB PHASEA

B B

HEADER 10X2

A A

+5V

DGND

-15V

BRITE

SENSE DRIVE

COLD COLC

COLB

COLA

ROW7 ROW6 ROW5 ROW4 ROW3 ROW2 ROW1 ROW0

VCC

20 19 16 15

18 17

14 13

12 11 10 9

8 7 6 5 4 3 2 1

2

C2

0.1uF

C3

0.1uF

C4

0.1uF

C7

0.1uF

5

NOTE: MOUNT C1 AND C6 ON SOLDER SIDE OF BOARD

1 2 3

VCC

C1

+

ROW7 ROW6 ROW5 ROW4 ROW3 ROW2 ROW1 ROW0

470uF

BRITE

-15V

10K

5

R10

VCC

ROW[0:7]

COLC COLB COLA COLD

VCC

ROW7 ROW6 ROW5 ROW4 ROW3 ROW2 ROW1 ROW0

U2

5 4 6

3 2 1

74HC138

G2B G2A G1

C B A

1

11

18 17 14 13

8 7 4 3

18 17 16 15 14 13 12 11

1

19

Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0

U3

OE LE

D8 D7 D6 D5 D4 D3 D2 D1

74HC373

U1

Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8

G1 G2

74HC541

Front Panel Board–Front Panel Misc. Buttons And LEDs (1 of 2)

4

C6

470uF

R17

2.2K

R26

2.2K

R11

2.2K

R12

2.2K

R13

2.2K

R3

4.7

+

R14

2.2K

R15

2.2K

VCC

R16

2.2K

Q1

2 3

MMBT2907A

1

Q2

2 3

MMBT2907A

1

Q3

2 3

MMBT2907A

1

Q4

2 3

MMBT2907A

1

Q5

2 3

MMBT2907A

1

Q6

2 3

MMBT2907A

1

Q7

2 3

MMBT2907A

1

Q8

2 3

MMBT2907A

1

COL[0:6]

C5

0.1uF

7

COL6

9

COL5

10

COL4

11

COL3

12

COL2

13

COL1

14

COL0

15

19

Q8

16

Q7

15

Q6

12

Q5

9

Q4

6

Q3

5

Q2

2

Q1

2

A1

3

A2

4

A3

5

A4

6

A5

7

A6

8

A7

9

A8

NOTE: HANGING WIRES COMPLETE THE MATRIX

4

3

ZXTP25015DFH

R1

4.7

Q14

2 3

SLIDER1 BLUE

COL0 COL1 COL2 COL3 COL4 COL5

1

2 3

Q15 ZXTP25015DFH

1

ZXTP25015DFH

2 3

Q9 ZXTP25015DFH

1

Q10

2 3

SLIDER2 GREEN

SLIDER2 RED

R2

15

R4

15

R5

15

R6R6

4.7

R7

1515

R8

EFFECTS RED

D3D3

2 1

SETUP RED

D5D5

2 1

SLIDER3 GREEN

SLIDER3 RED

STORAGE

RED

D9D9

2 1

MASTER RED

D11D11

2 1

SLIDER4 GREEN

SLIDER4 RED

Q ACCESS RED

D4D4

2 1

PROGRAM RED

D6D6

2 1

SLIDER5 GREEN

SLIDER5 RED

SLIDER9 GREEN

SONG RED

D10D10

2 1

MIDI RED

D12D12

2 1

SLIDER6 GREEN

SLIDER6 RED

SLIDER9

SW29D101

SW37

SW5

SW7

SW109

RED

LL4148

D108

LL4148

SLIDER9

D104

LL4148

SW30

SW31

KEYPAD3 KEYPAD6 KEYPAD9 CLEARENTER

SW32

SW13

D110

LL4148

4.7

R9

15

UP

SW28

DOWN

SW26 D102

CANCEL

SW48

EFFECTS

SW4

SETUP

SW6 D112

SOFT1

D103

SW24

LL4148

SW27

LL4148

"+" "-" KEYPAD2 KEYPAD5 KEYPAD8 KEYPAD0

SW36

LL4148

SW47

STORAGE Q ACCESS SONG RECORD PLAY/PAUSE STOP

SW12

MASTER PROGRAM MIDI LAYER/ZONE CHAN/BANK EDIT

D109

LL4148

SLIDER3 SLIDER4 SLIDER5 SLIDER6 SLIDER7

3

1

2 3

Q11 ZXTP25015DFH

RECORD GREEN

D7D7

G R

3

DUAL COLOR

2

RED

ARP RED

SLIDER7 GREEN

SLIDER7 RED

SW38

SW39

SW40

SW1

LL4148

SOFT5SOFT4SOFT3SOFT2

D105

LL4148

2 3

4

1

2

1

Q12 ZXTP25015DFH

PLAY/ PAUSE

D13D13

G R

GREEN

3

DUAL COLOR

2

RED

SW RED

SLIDER8 GREEN

SLIDER8 RED

CARD IN USE

SW43D107

SW42

SW41

SW10

SW8SW16SW15SW14

LL4148

SOFT6

SW19SW20SW21SW23

D111

LL4148

SWARPSLIDER2SLIDER1

SLIDER8

2

4

1

EXIT

SW9

1

COL6

LEDROW8 LEDROW7 LEDROW6 LEDROW5 LEDROW4 LEDROW3 LEDROW2 LEDROW1

7 6 5 4 3 2 1

16 15 14 13 12 11

8 9

10

SWROW7 SWROW6 SWROW5 SWROW4 SWROW3

RN1

1 2 3 4

RN2

1 2 3 4

SWROW2 SWROW1 SWROW0

SUPER BLUE

D14

+/-LEFT RIGHT KEYPAD1 KEYPAD4 KEYPAD7

SW44

SW45

SW46

SW2

SW35D106

21

Young Chang R&D Institute

1432 Main St. Waltham MA 02451 USA

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

Title

PC3 Front Panel Misc. Buttons And LEDs

Size Document Number Rev

By

H. Chamberlin

Date: Sheet of

Wednesday, April 18, 2007

1 2

1

021308-001

J201

LEDROW8 LEDROW7 LEDROW6 LEDROW4 LEDROW3 LEDROW2 LEDROW1

COL5 COL4 COL3 COL2 COL1 COL0

SWROW6 SWROW2 SWROW1

HEADER16

10K

8 7 6 5

10K

8 7 6 5

VCC

A

6-16

Front Panel Board–Front Panel Bank & Program Buttons & LEDs (2 of 2)

5

4

3

2

1

Kurzweil PC3x Service Manual

PC3 FRONT PANEL BANK & PROGRAM SELECT BUTTONS AND LEDS

1

3

Q17 ZXTP25015DFH

2

BANKSEL 8 BANKSEL 16

SW111

SW114

SW117

SW120

D114D113

21

YELLOW YELLOW

D117

21

D120

21

D123

21

3

U4

COLD

D D

COLC COLB COLA

LEDROW8

LEDROW7

C C

LEDROW6

6 5 4

3 2 1

74HC138

G1 G2B G2A

C B A

R18

15

R19

4.7

R20

4.7

Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0

7 9 10 11 12 13 14 15

SWROW7

SWROW6

SWROW5

Q16

1

ZXTP25015DFH

2

PROGSEL 8

21

SW110

PROGSEL 7 BANKSEL 7 BANKSEL 15

SW113

PROGSEL 6 BANKSEL 6 BANKSEL 14

SW116

PROGSEL 5 BANKSEL 5 BANKSEL 13

SW119

BLUE

D116

21

BLUE YELLOW YELLOW

D119

21

BLUE

D122

21

BLUE YELLOW YELLOW

1

3

Q18 ZXTP25015DFH

2

SW112

SW115

SW118

SW121

D115D115

D118

D121

YELLOWYELLOW

D124

21

VCC

21

R30

BRITE

21

20.0K

1

R28

10.0K

3

Q22

MMBT3904

2

NOTE: MOUNT C8 ON SOLDER SIDE OF BOARD

+

C8

R27

7

10.0K

Q2

3

MMBT390

R29 30K

470uF

G

1

3

4

1

2

234

D D

S

NDT3055

L1

47uH

Q19

ZXTN25015DFH

Q20

32

1

0.22uF

ZXTN25015DFH

Q21

32

1

C10

R31 330

1

2

J203

HOT

RETURN

D138

LL4148

T1

2

3

4

1

5

5 VOLT

9

7

C11

33pFF

D137

LL4148

R21

LEDROW5

B B

LEDROW4

LEDROW3

LEDROW2

A A

LEDROW1

4.7

R22

15

R23

4.7

R24

15

R25

4.7

5

SWROW4

SWROW3

SWROW2

SWROW1

SWROW0

PROGSEL 4 BANKSEL 4 BANKSEL 12

SW122

PROGSEL 3 BANKSEL 3 BANKSEL 11

SW125

PROGSEL 2

SW128

PROGSEL 1 BANKSEL 1 BANKSEL

D125

21

SW123

D128

21

BLUE YELLOW YELLOW

D131

21

BLUE

D134

21

BLUE YELLOW YELLOW

SW126

BANKSEL 2 BANKSEL 10

SW129

SW132SW131

D126

D129

D132

D135

21

SW124

21

SW127

21

SW130

21

SW133

4

D127

YELLOWYELLOWBLUE

D130

D133

YELLOWYELLOW

9

D136

21

-15V

ARPSW

D140D140

21

D139D139

RED RED

SW134SW134

SW135SW135

THIS IS A SEPARATE BOARD TO BE PLACED IN THE LCD CUTOUT AREA. SEE PCB CONTROLL DRAWING FOR DETAILS

3

J301

21

4 3 2 1

HEADER 4

COL2

COL2 COL1

COL1 SWROW

SWROW LEDROW

LEDROW

Young Chang R&D Institute

1432 Main St. Waltham MA 02451 USA

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

Title

Size

2

Date: Sheet of

.

PC3 Front Panel Bank & Program Buttons & LEDs

By

H. Chamberlin

Wednesday, April 18, 2007

Document Number Rev

+

C9

10uF

021308-001

2 2

1

R32 750

A

6-17

Kurzweil PC3x Service Manual

J304

COL2 COL1

SWROW

LEDROW

HEADER 4

J303

D D

C C

COL5 COL4 COL3 COL2 COL1 COL

LEDROW8 LEDROW7 LEDROW6 LEDROW4 LEDROW3 LEDROW2 LEDROW1

SWROW6 SWROW2 SWROW1

HEADER 8X2

5

4 3 2 1

16 15 14 13 12 11

7 6 5 4 3 2 1

8 9 1

3

2

Slider Board

4

SLIDER 9

D1

21

BLUE

SW9

SLIDER 2 SLIDER 3 SLIDER 5 SLIDER 6 7

GREEN GREEN GREEN GREEN

G R

SW2

4

1

RED

D3

G R

3

2

SW3

4

1

RED RED RED

D4

SLIDER 4

GREEN

G R

3

DUAL COLOR

2

SW4

4

1

RED

D5

3

SLIDER

2

3

2

1

GREEN

G R

DUAL COLOR

RED

SW1

G R

DUAL COLORDUAL COLORDUAL COLOR

SW5

43

1

D2

SLIDER

G R

4

1

D6

3

DUAL COLOR

2

SW6

4

1

D7

G R

3

DUAL COLOR

2

SW7

2

GREEN

4

1

RED

1

D8

SLIDER 8

GREEN

DUAL COLOR

4

1

RED

B B

SLIDER 1 SLIDER 2 SLIDER 3 SLIDER 4 SLIDER 5 SLIDER 6 SLIDER 7 SLIDER 8 SLIDER VOLUME

UP UP UP UP UP UP UP UP UP UP

10K10K

R2R1 R1R5 R8R3 R6 R9R4 R7

A A

5

10K10K

10K

4

10K

SW8

GR

3

2

D9

9

C1

10K

4 2 5

1 12 15 14 13

9 1

6

U1

X7 X6 X5 X4 X3 X2 X1 X

A1A2VDD

GNDA

VEE

EN

74HC4051

10K

X

3

0.1uF

3

16 811 7

J302

7

+5VREF

5

SLDR9

6

OUT

2

MUX

3

MUX1

4

MUX2

8

VOLUME

1

GND1

HEADER 8

Young Chang R&D Institute

1432 Main St. Waltham MA 02451 USA

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

Title

PC3 SLIDER

Size Document Number Rev

By

H. Chamberlin

Date: Sheet

2

Tuesday, March 27, 2007

121301A1

1 1

1

A1

of

6-18

Wheels Board–Wheels & AT

5

D D

C C

4

J204

PITCH

R1 10K LIN

CONN PLUG 3

J205

MOD

R2 10K LIN

CONN PLUG 3

1 2 3

3

1 2 3

PITCH CENTR

3

R10

10.0K 1%

R3

50K

R4

30.1K 1%

R5

30.1K 1%

R8

30.1K 1%

R9

10.0K 1%

5

6

2

U2B

84

TLC2272

+

-

R7 105K 1%

+5Vref

U2A TLC2272

3

+

2

-

7

105K 1%

C2 .1uF

C1 .1uF

R19 220

1

+5Vref

R18

220

+5Vref

J201 Note:

Kurzweil PC3x Service Manual

1

J201

WHEELS

1 2 3 4 5

S

+5VREF PITCH MOD PRESSR AGND

2.5mm 1 X 5

5

J201 has a dual footprint pattern. The alternate pattern is for

C3 .1uF

+5Vref

R14

U1B TLC2272

+

-

100K

7

1 2 3 4

3

2

WHITE RANGE

+5Vref

B B

R11

2.49K 1%

R12

1.00K 1%

R13

1.50K 1%

BLACK RANGE

R15 100K

5

6

J203 BLACK PRESSR

HI2 HI1 LO2 LO1

U1A

84

TLC2272

+

-

1

C6 .1uFC6.1uF

1 2 3 4

J202 WHITE PRESSR

HI2

HI1 LO2 LO1

R20

4.99K 1% U3A

84

+

-

C4 .1uF

TLC2272

3

2

R16 4.99K 1%

+5Vref

C5 .1uF

R17

1.0K

1

a 2mm 1 X 6 connector which is not used in the PC3. Pin 6 is connected to pin 5 in the 6 pin pattern. The other connections are the same as the 5 pin pattern. The PCB footprint property of this part is for the 5 pin pattern.

U3B TLC2272B2

5

+

6

-

7

HEADER 4

A A

5

4

HEADER 4

3

Young Chang R&D Institute

1432 Main St. Waltham MA 02451 USA

Reproduction without the express written consent of Young Chang Co., Ltd. is prohibited.

Title

PC3 Wheels PCB

Wheels & AT

Size Document Number Rev

By

B

Hal Chamberlin

Date: Sheet

2

Wednesday, March 28, 2007

121230A2

1 1

1

A

of

6-19

KURZWEIL PC3X Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual