Kurzweil Mark Pro 2i Service Manual

Mark PRO 2i

Service Manual

2007 All rights reserved. Kurzweil is a product line of Young Chang Co.; Kurzweil is a trademark of Young Chang Co. 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.

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. 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.

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

4. 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.

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

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

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

8. 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.

9. 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.

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

11. 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.

12. 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.

13. WARNING: Do not place objects on the product’s power
supply 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 A digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection
against harmful interference when the instrument is used in
a commercial environment. This instrument generates, uses,
and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of
this instrument in a residential area is likely to cause
harmful interference, in which case the user will be required
to correct the interference at his or her own expense.

Changes and modifications not expressly approved by the manufacturer

or registrant of this instrument can void the user’s authority to operate
this instrument under Federal Communications Commission rules.

In order to maintain compliance with FCC regulations, shielded cables
must be used with this instrument. Operation with
unapproved equipment or unshielded cables is likely to result in harmful
interference to radio and television reception.

NOTICE
This apparatus does not exceed the Class A 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 A prescrites dans le
Reglement sur le brouillage radioelectrique edicte par le ministere des
Communications du Canada.

SAVE THESE INSTRUCTIONS

Young Chang Distributors

Contact the nearest Young Chang office listed below to locate your local Young
Chang/Kurzweil representative

YOUNG CHANG Headquarters

9FL, 102-Dong, I’PARK, Jeoungja-Dong,
Buandan-Gu, Seongnam-Si, Gyeonggi-Do, Korea
463-859

Tel : [phone]
Fax : [phone]
Web : www.yapiano.co.kr

YCNA(Young Chang North America)

19060 S Dominguez Hills, Dr Rancho Dominguez,
CA 90220, U.S.A
Tel : [phone]
Fax : [phone]
Web : www.youngchang.com

YCRDI(Young Chang R&D Institute)

1432 Main Street Waltham, MA02451, U.S.A
Tel : [phone]
Fax : [phone]
Web : www.kurzweilmusicsystems.com

.

1

Contents

MARK PRO 2I

IMPORTANT SAFETY & INSTALLATION INSTRUCTIONS
CONTENTS
CHAPTER 1 INTRODUCTION

Introduction to Mark Pro 2i .........................................................................................................................................................5

Mark Pro 2i Rear Panel
Rear Panel Features
Mark Pro 2i Front Panel
Front Panel Features
Power On. Off.

CHAPTER 2 MARK PRO 2I ASSEMBLY

Introduction .................................................................................................................................................................................10

Cables, Connectors

Installation....................................................................................................................................................................................11

Checking the Parts

Check that you have all the parts below before you start assembling..................................................................11

Assembling the Stand
Disassembling the Main set

Check the 5 steps below before you start disassembling. .......................................................................................15

Removing the Scanner Board
Removing the Amp Board
Removing the Front Panel Board

................................................................................................................................... 1

............................................2

......................................................................................................................................... 2

...................................................................................................... 4

.........................................................................................................................................................5

..............................................................................................................................................................5

........................................................................................................................................................6

.............................................................................................................................................................7

.........................................................................................................................................................................9

................................................................................10

.............................................................................................................................................................10

..............................................................................................................................................................11

.........................................................................................................................................................12

..............................................................................................................................................15

...........................................................................................................................................18

..................................................................................................................................................20

.....................................................................................................................................21

CHAPTER 3 DIAGNOSTICS

Diagnostic Tests.............................................................................................................................................................................25

Entering Diagnostics....................................................................................................................................................................26

Diagnostic Test Modes ..................................................................................................................................................................27

Run One Test
Run Burn Test
Test Results
Description of Tests

.........................................................................................................................................................................................28

ROM

.........................................................................................................................................................................................28

RAM
Sine Wave
NVRAM

.........................................................................................................................................................................27

.......................................................................................................................................................................27

...........................................................................................................................................................................28

............................................................................................................................................................28

..............................................................................................................................................................................29

....................................................................................................................................................................................30

CHAPTER 4 TROUBLESHOOTING

Introduction..................................................................................................................................................................................31

Cables, Connectors

Boot Block..................................................................................................................................................................................31

Entering the Boot Block
Hard Reset

.............................................................................................................................................................................33

.............................................................................................................................................................31

.....................................................................................................................................................31

....................................................................................................... 25

......................................................................................... 31

2

Software Updates.........................................................................................................................................................................33

File Formats

Replacing the Battery..................................................................................................................................................................35

Mark Pro 2i Scanner test ............................................................................................................................................................37

Power Problems...........................................................................................................................................................................38

.........................................................................................................................................................................................38

Dead

Audio Problems............................................................................................................................................................................39

No Audio

Front Panel Problems ..................................................................................................................................................................39

Buttons, Knobs or Controllers not working

Keyboard Problems......................................................................................................................................................................40

Dead Keyboard

...........................................................................................................................................................................33

.................................................................................................................................................................................39

..................................................................................................................39

.....................................................................................................................................................................40

CHAPTER 5 PARTS LISTS

Introduction..................................................................................................................................................................................42

Mark Pro 2i Printed Circuit Boards and Assemblies
Engine Board
Scanner Board
Audio Board
Front Board
Head Phone Board

.........................................................................................................................................................................43

......................................................................................................................................................................47

...........................................................................................................................................................................48

............................................................................................................................................................................50

...............................................................................................................................................................51

CHAPTER 6 SCHEMATICS

Engine Board Micro Processor(68331) Interface
Engine Board DRAM, LEVEL, SHIFTER
Engine Board MARA
Engine Board Sound ROM, UART, USB, BRIDGE
Engine Board POWER, CLOCK, PLL
Scanner Board 38869 Interface
Scanner Board Front Interface
Front Board Left
Front Board Right
Amp Board Engine IO, MIDI IN & OUT
Amp Board Speaker, Line IN & OUT, Headphone

............................................................................................................................................................54

...................................................................................................................................................................59

................................................................................................................................................................60

......................................................................................................... 42

..................................................................................................42

........................................................................................................ 52

.........................................................................................................52

.........................................................................................................................53

.......................................................................................................55

..............................................................................................................................55

........................................................................................................................................56

.........................................................................................................................................58

............................................................................................................................61

........................................................................................................62

3

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 Mark PRO 2i instruments include,
consult the Musician’s Guide.

This chapter also includes a description the symbols used throughout this manual.

Notes, Cautions, Warnings

Please pay special attention to all Notes, Cautions, and Warnings used throughout this manual. A brief description
of these symbols follows:

Note: If possible, all user programs and setups should be saved prior to opening the unit,

entering the Boot Block to run diagnostics or to perform a hard reset. For instructions to
save all user programs and setups.

Note: Provides additional information emphasizes specific instructions.

Caution: Instructs 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 devices.

.

4

Mark Pro TWOi

Introduction to Mark Pro 2i

Mark Pro 2i Rear Panel

Figure 1-1 Mark PRO 2i rear panel

Rear Panel Features

Power Connector— AV 100~240 VAC 50/60Hz

Audio Connection – Balanced 1/4” left and right audio output jacks to connect to an amplifier,

mixer or sound system.

MIDI Connection – In, Thru/Out, and Out ports to connect the Mark Pro 2i to other MIDI

devices to receive, pass, and send MIDI data.

USB – Transmit/receive MIDI message over USB with host system(typically, PC).

5

Mark Pro TWOi

Mark Pro 2i Front Panel

Figure 1-2 Mark PRO 2i Front Left panel

Figure 1-3 Mark PRO 2i Front Right panel

6

Mark Pro TWOi

Front Panel Features

Figure 1-4 Mark PRO 2i Front left section

Volume Knob

( turn to the left is Soft, right is Loud )

Demo/Edu.

Effect & Reverb

Recording & Playing

Metro & Rhythm

—

Use the volume knob located on the far left of the front panel to adjust the

volume. Set the volume to the minimum when turning on the instrument and
adjust it to the desired level later. Moving the knob clockwise increases
volume, while moving it counter clockwise decreases volume.

—

The Mark-Pro 2i has 3 ensemble demos, 50 piano demos and
8 instrumental demos that will aquaint you with the sound of the Mark-Pro 2i.

—

Use the buttons to select from two blocks of effects to apply effects and

reverb to programs and setups.

—

The Mark-Pro 2i allows you to record and playback your performance.

Two song spaces are available each with two tracks.

—

Use the buttons, you can change the tempo of the metronome.

7

Mark Pro TWOi

Figure 1-5 Mark PRO 2i Front center section

3 X 7 Segment

—

Three character & Seven segment display.

Figure 1-6 Mark PRO 2i Front right section

Transpose — Use this button to change tonality, using Transpose + / Transpose -

button can be up/down up to 2 octaves.

Split & Layer

—

Use the buttons you can add a voice other than strings or sounds (Layer)

and divide the keyboard of the Mark-Pro2i into two, left and right, and assign a
different voice for each(Split).

Grand piano — Use the button

all of the non piano functions.

Voice select

Global

—

Use the buttons selects the piano voice by default when turned on, which

can also be selected by the Grand Piano button on the left as shown in the
figure 1-6. And the Grand Piano voice, the Mark Pro-TWOi has 64 voices which
can be classified to as 8 categories: 8 piano voices, 8 elec pianos, 8 organs/
keyboards, 8 strings, 8 pads, 8 brasses, 8 guitars/voices, 8 percussion sets.

—

Use the button , in connection with the 8 buttons on its left (Local, Tune, Touch,

etc) lets you to control various functions affecting the keyboard globally.

can be just as simple to use as an acoustic piano by disabling

8

Mark Pro TWOi

Figure 1-6 Mark PRO 2i Pedal

SUSTAIN

SOSTENUTO

SOFT

—

The Sustain pedal lets the notes ring on after the keys are released. Releasing

the pedal will silence the sustained notes.

—

Press the sostenuto pedal while holding a note on the keyboard, and the

note will sustain as long as you hold the pedal. But all the subsequently play
notes will not be sustained.

—

The soft pedal makes the volume softer when pressed. But it will not affect the

volume of notes that are already played.

Power On. Off.

Figure 1-7 Mark PRO 2i Power On & Off

The Mark Pro 2i is a free volt product which can be used both on 110V and 220V. You can
power this digital piano by plugging it into a standard household power outlet. Make sure the
power switch on the bottom surface of the keyboard is turned off before you connect the power
cord to the electrical outlet.
After connecting to the outlet, you may turn on the power switch located at the bottom left of the
keyboard. Check the main volume knob is fully down to the left. When the power switch is
turned on, the front panel lights up. In 3 seconds the Mark-Pro 2i is ready to play.

9

Mark Pro TWOi

Chapter 2
Mark Pro 2i Assembly

Introduction

This chapter contains all the procedures for the disassembly and reassembly of Mark Pro 2i as

well as instruments with factory-installed. There are three main sections: Opening the Mark Pro

2i, Top Enclosure, Mark Pro 2 Keyboard Assembly.

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

Notes, Cautions, Warnings

Please pay special attention to all Notes, Cautions, and Warnings as they not only point out

specific instructions

.

Cables, Connectors

Flat Ribbon Cables

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

ribbon cables have locking cable clips. Be sure to reapply the clips when connecting cables.

When disconnecting and connecting these cables, you must look for the marking on the edge of

cable denoting Pin 1 and be sure that you match it correctly with Pin 1 on the board.

the

Cable Routing

In some cases, tape secures cable connections or fastens cables to the Top enclosure. Always

peel back the tape from one side when disconnecting cables so that the tape remains properly

positioned.

Required Tools and Materials

screwdriver

-

10

Mark Pro TWOi

Installation

Checking the Parts

Check that you have all the parts below before you start assembling.

Item No. Item No.

1. Main set 1EA 8. Screws for Side Panel and Keyboard (Rear) 2EA

2. Side Panel (Left) 1EA 9. Screws for Side Panel and Keyboard (Front) 2EA

3. Side Panel (Right) 1EA 10. Screws for Side Panel and Pedal Box 4EA

4. Pedal Box 1EA 11. Screws for Rear Panel 2EA

5. Rear Panel 1EA 12. Screws for keyboard and the stand 4EA

6. Support Legs 2EA

7. Headphone Hanger 1EA

Table 2-1 Mark PRO 2i All the parts list

Figure 2-1 Mark PRO 2i Parts

11

Mark Pro TWOi

Assembling the Stand

* Be careful when placing the Main set in the stand. Do not push down or pull forward

the Main set without tightening all the screws on the stand.

Side Panel and Pedal Assembly

Figure 2-2 Mark PRO 2i Side panel and Pedal Assembly

1. Place pedal box 4 on the left side panel 2 and fasten the screw 10 on the hole.

2. Put on the right side panel 3 in the same way.

3. Take out the pedal cable from inside of the pedal box 4.

12

Mark Pro TWOi

Rear Panel Assembly

Figure 2-3 Mark PRO 2i Rear panel Assembly

1. Fit the rear panel 5 into side panel brackets and fasten the screws 8.

2. After fastening all four screws of 8, fasten the screws 11 to lock to the pedal

box.

Installing the Main set onto the Stand

Figure 2-4 Mark PRO 2i Installing the Main set onto the Stand

13

Mark Pro TWOi

1. Place the Main set on the stand so that the wood pegs on the top of the side

panel fit into the holes on the bottom surface of the keyboard.

2. Attach the side panels to the Main set with the metal brackets. Use the bolt 12

for the front hole, and 9 for the rear.

3. Insert the pedal cable connector to the jack on the bottom surface of the Main

set as shown in the left figure.

4. Locate the unit to the desired place and rotate the height adjustment screw until

it supports the pedal box, preventing the pedal box from bending when you

press the pedals.

Be sure to install the adjustment screw and perform the adjustment procedure

before depressing the pedals. Failure to do so may result in damage to the pedal

box.

5. Attach the headphone hanger wherever you wish.

Figure 2-5 Mark PRO 2i Headphone hanger

14

Mark Pro TWOi

Disassembling the Main set

Check the 5 steps below before you start disassembling.

1. Top Cover Disassembly

Figure 2-6 Mark PRO 2i Disassemble top cover

15

Mark Pro TWOi

2. Dust Cover Disassembly

Figure 2-7 Mark PRO 2i Disassemble Dust cover

3. Grill Disassembly

Figure 2-8 Mark PRO 2i Disassemble Grill

16

Mark Pro TWOi

4. Front panel Disassembly

Figure 2-9 Mark PRO 2i Disassemble Front panel

5. Keyboard Disassembly

Figure 2-10 Mark PRO 2i Disassemble Keyboard

17

Mark Pro TWOi

J

4 F

ront Panel flat ribbon F

ront Panel Board

J

2 Treb

le flat ribbon Keyboard Assem

b

ly

J

3 Bass

flat ribbon Keyboard Assem

b

ly

J12 Engine I/O

S

tandard wire

Amp Board

Bottom Surface

Figure 2-6 Mark PRO 2i Bottom surface

The Mark Pro2i has two 1/4” headphone jackes on the surface of the keyboard so that two can
listen and play at the same time. The volume for both jacks is controlled identically by the main
volume knob located at the far left side on the front panel.

Removing the Scanner Board

1. Follow the procedure described to remove the top panel Assy.

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

2

Ref. Name Cable Type Destination

J6

MIDI/CPU

standard wire

Engine Board

J9 Piano Pedals Standard wire Pedals

Table 2-2 Connector Board cables

18

Mark Pro TWOi

3. Disconnect the hook-up wire cable on the Scanner Board.

4. Remove the cable locking clips and disconnect the flat ribbon cables from J2, J3, and J4. Be

sure to set the cable locking clips safely aside so that you can install them when you

reconnect the cables.

Note: The cables used throughout the

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

5. Remove the all screws .

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

6 . Remove the Scanner Board.

Mark PRO 2i

are bundled and routed so that their

Treble.

Replacing the Scanner Board

1. Hold the Scanner Board and position it so that the power switch, and the rear panel jacks

are correctly positioned through the rear panel portion of the top enclosure.

2. Install the all screws.

3. Connect the ribbon cables in the following order.

Caution: Be sure to look for the marking on the edge of the cable denoting Pin 1 and that you

match it correctly with Pin 1 on the board. Make certain that the wires are straight

prior to inserting them into the connector and that each wire is correctly inserted

into its respective position.

4. Connect the flat ribbon cables from the Keyboard Assembly to J2 and J3. Be sure to install

a cable locking clip on each connector.

19

Mark Pro TWOi

J

3 Main Volume

standard wire

F

ront Panel Board

J

4

Headphone

standard wire

Headpho

ne

J

5 R-woofer

standard wire

Right Speaker

J

6 R-woofer

standard wire

Right Speaker

5. Connect the flat ribbon cable from the Front Panel Board to J4 on the Connector Board. Be

sure to install a cable locking clip on the connector.

6. Connect all the stranded wire cable from the Engine Board to the Scanner Board and from

Front board to Scanner board..

Removing the Amp Board

1. Follow the procedure described to remove the top panel Assy.

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

2

Ref. Name Cable Type Destination

J1

J7
J8

J11 Mark Pro 2i power standard wire Engine Board
J12 Engine I/O standard wire Scanner Board
J13 USB standard wire Scanner Board
J15 Audio standard wire Engine Board

Power supply

L-woofer
L-woofer

standard wire

standard wire
standard wire

POWER SUPPLY

Light Speaker
Light Speaker

Table 2-3 Amp Board cables

3. Disconnect the hook-up wire cable on the Amp Board.

4. Remove the cable locking clips. Be sure to set the cable locking clips safely aside so that

you can install them when you reconnect the cables.

5. Remove the all screws .

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

6 . Remove the Amp Board.

20

Mark Pro TWOi

Replacing the Amp Board

1. Hold the Amp Board and position it so that the power switch, and the rear panel jacks are

correctly positioned through the rear panel portion of the top enclosure.

2. Install the all screws.

3. Connect the ribbon cables in the following order.

Caution: Be sure to look for the marking on the edge of the cable denoting Pin 1 and that you

match it correctly with Pin 1 on the board. Make certain that the wires are straight

prior to inserting them into the connector and that each wire is correctly inserted

into its respective position.

6. Connect all the stranded wire cable from the Engine Board to the Amp Board and from

Front board to Amp board..

Removing the Front Panel Board

1. Follow the procedure described on page 19 to remove the Connector Board.

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

Top Enclosure

Ref. Name Cable Type Destination

J4
J5

3. Remove the cable locking clip and disconnect the flat ribbon cable at J4, J5 on the Front

Panel Board. Be sure to set the cable locking clip safely aside so that you can install it

FP Brige

FP Bridge

Flat ribbon

flat ribbon

Table 4-3 Front Panel Board cables

Front Board
Front Board

when you reconnect the cable.

4. Remove the eighteen screws that secure the three PC board clamps

5. Remove slider volume handle and 4 control knob handles also

6. Lift the Front Panel Board up from the top enclosure.

21

Mark Pro TWOi

J

4 MIDI & CPU

Standard

wire Scanner

Board

J

9 Mark Pro 2i AUDIO OUT

Amp Board

J

10 Mar

k Pro 2i USB

standard wire

Amp Board

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.

Replacing the Front Panel Board

1. Position the Front Panel Board onto the top enclosure, then raise the top enclosure up

slightly to verify that the volume slider and switch button caps are correctly positioned

through their openings in the top enclosure.

2. Align the center screw holes of the three-hole groupings on the front panel edge of the

board with the thread marks in the extrusion and install the two screws that secure the

front panel edge. See Figure 4-8.

3. Connect ribbon cable cables in the following order.

Caution: Be sure to look for the marking on the edge of the cable denoting Pin 1 and that you

inserting them into the connector and that each wire is correctly inserted into its

respective position.

4. If you have disconnected the flat ribbon cable from J4, J5, reconnect it. Be sure to install the

cable locking clip.

connector.

.

Removing the Engine Board

1. Following Step 2, disconnect the cables listed in Table 4-4.

2. Disconnect the stranded wire cables from J6 to J10.

Ref. Name Cable Type Destination

J6

Mark Pro 2i

PWR stranded wire

standard wire

Amp Board

Table 4-4 Engine Board cables

22

Mark Pro TWOi

3. Remove the Engine Board

Replacing the Engine Board

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

2. Align the center screw hole on the front panel edge with the thread marks in the extrusion

and install the screw that secures the front panel edge.

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

Caution: Be sure to look for the marking on the edge of the cable denoting Pin 1 and that you

match it correctly with Pin 1 on the board. Make certain that the wires are straight

prior to inserting them into the connector and that each cable is correctly inserted

into its respective position.

23

Mark Pro TWOi

24

Mark Pro TWOi

Chapter 3
Diagnostics

Diagnostic Tests

The following lists the diagnostic tests available for the SP2X

• ROM

• RAM

• MARA

• Sound ROM

• DRAM

• Sine

• MIDI

• NVRAM

Warning: Some diagnostic tests erase user programs and setups. If possible, be sure to save all

.

user programs and setups, before entering diagnostics.

25

Mark Pro TWOi

Entering Diagnostics

Apply power to the unit. Press Global button one time while three dots blinking in the 7-

segment. After a while, segment display the following message.

Figure 3-1 7 segment example, entering diagnostics

Press either the +/Yes or -/No until . Appears in the segment.

And Press the Transpose + button for enter into menu item display the following.

Figure 3-2 7 segment example, entering diagnostics

Press Transpose + button to select the run one test mode. To select the run burn-in

test mode, press either the +/Yes or -/No button then press the Transpose + button to
begin the tests.

26

Mark Pro TWOi

Diagnostic Test Modes

Run One Test

each available test. To step through the different tests, the +/Yes or -/No button Press the

Transpose + button to select the test.

Run One Test allows you to select an individual test, or to step through and run

Figure 3-3 7 segment example, Run One Test

At the completion of a test, whether pass or fail, press the Transpose - button to exit the test.
Press either the +/Yes or -/No button to advance to the next test or another test in the sequence

At the completion of a test, press the Transpose - button to return to the test menu. To exit

diagnostics, turn the power off and on to return to normal operation.

Run Burn Test

.

Burn-in mode, segment display and continuously runs the
following sequence of tests.

•

• RAM

• MARA

• Sound ROM

• DRAM

• MIDI

The 7 segment displays the test results at the completion of each test. To stop the burn-in process

and view the test results for each test run, press the Transpose - button. Use the +/Yes or -/No

button

To exit Run Burn-in and return to the main menu, press the Transpose - button.

To exit diagnostics, turn the power off and on to return to normal operation.

ROM

Figure 3-4 segment example, Run Burn Test

to scroll through the results of each test.

27

Mark Pro TWOi

Test Results

At the completion of an individual test, the segment displays the test results. An expected.

Result is means passed, means failed.

Figure 3-5 segment example, Test results

Description of Tests

ROM

This test checks the software data (engine, boot, and setups ) stored in

Flash ROM on the Engine Board.

RAM

The RAM test writes to the microprocessor RAM space and verifies that the

write was successful. A failure of this test may indicate a problem with the
RAM or related circuitry in the Engine Board.

MARA

This test performs a read-write of the MARA registers and verifies that the data written can be

read back successfully. A failure of this test may indicate a problem with a MARA, related

circuitry or the Engine

Sound ROM

This test confirms that the Sound ROMs can be read by the MARA by performing a checksum

the Sound ROMs. The computed checksum is then compared to the stored checksum.

of this test may indicate a problem with a Sound ROM (U47), or the Engine

Board.

Board.

A failure

of

28

Mark Pro TWOi

Delay RAM

This test performs a quick read-write of the internal RAM and verifies that the data was

successfully written and retained. A failure of this test may indicate a problem with the RAM or

the Engine Board.

Sine Wave

This test generate sine wave from MARA, wave sample located in Sound ROM, and plays

through DAC and analog audio output. A failure of this may indicate a problem with a MARA

or Sound ROM (U47), or the analog audio section including DAC and OP-AMPs.

Caution: The output level of sinewave test is very loud!

MIDI

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:

Note: Be sure to use a known working MIDI cable!

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

A failure of this test could be caused by failure of the serial port, other MIDI circuitry, or a

problem on the Amp Board or the Engine Board.

.

29

Mark Pro TWOi

NVRAM

The NVRAM(rM2) test performs part of the SRAM back up by built in lithium coincell battery.

Test starts with write test pattern to NVRAM area and after power cycle, read pattern again.

A failure of this test could be caused by low battery voltage or problem of battery-back related

circuit.

30

Mark Pro TWOi

Chapter 4
Troubleshooting

Introduction

Cables, Connectors

Cable Routing

In some cases, tape secures cable connections or fastens cables to the bottom enclosure. Always

peel back the tape from one side when disconnecting cables 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.

Boot Block

Use the Mark Pro 2i’s Boot Loader to enter Diagnostics or perform a Hard Reset to the unit. You

can also install operating system updates and ROM objects into Flash ROM.

Entering the Boot Block

Apply power to the unit. When the message appears in the display,

quickly press and release the Global button. The segment display the main menu of the Boot

Loader and the first available option. Use the +/Yes or -/No button to advance to the next option.

The menu options are as follows;

31

Mark Pro TWOi

Install Engine

—

Installs new operating system software upgrades.

Update Boot block

—

Run Diagnostics

— Enters the diagnostic test menu. For a complete list of tests

and the procedure to execute the diagnostic tests.

Run Engine

—

Exits the boot block and returns the unit to normal operation

Installs boot block updates

.

.

Hard RESET

— Clears the memory to factory default settings.

32

Mark Pro TWOi

Resets

Hard Reset

There are two ways to perform a Hard Reset to the Mark PRO 2i.

Press the Global button and press the Reset button segment displays following screen and

press

+/Yes button segment displays

an message. Press the +/YES button again segment finally displays

to continue.

Software Updates

A computer with a MIDI interface and sequencer is necessary to transfer software to your Mark

units MIDI Sysex.

Pro 2i

File Formats

Software upgrades are stored as standard MIDI files. Filenames are in the format MP2VV.MID,

where X is the software block and VVV is the version number (V.VV). The following lists the

possible values for X. Never install files with names that don’t conform to this format; it won’t

work.

bk—boot block for keyboard models

k—operating system software for keyboard models.

33

Mark Pro TWOi

Installing the Operating System or Setups

Warning: This procedure requires performing a hard reset. All user programs and setups will be

erased. Before continuing, be sure to save all user programs and setups.

1. Connect a MIDI cable from the MIDI Out port of the computer interface or sequencer to

the MIDI In port on the Mark pro 2i.

2. Open the first .MID file using the sequencer program.

3. Turn on the Mark Pro 2i and follow the procedure to enter the Boot Block.

4. Press the Enter button to select “uOS”

5. The segment shows “uOS”. Start playing the MIDI file from the sequencer.

While a file is loading, the bottom line of the display shows the progress. If the

display continues to show after starting the sequencer, stop and restart the sequence.

6. After the file is loaded, the display will show “oK”.

7. If you have additional files to load, open the file from the sequencer and begin playing it.

8. Press the Cancel button twice to return to the main menu. Scroll to Hard Reset and select.

34

Mark Pro TWOi

Installing a New Boot Block

Warning: This procedure performs a hard reset. All user programs and setups will be erased.

Before continuing, be sure to save all user programs and setups.

1. Connect a MIDI cable from the MIDI Out port of the computer interface or sequencer to

the MIDI In port on the Mark Pro 2i.

2. Using the sequencer program, open the first .MIDI file.

3. Turn on the Mark Pro 2i and follow the procedure to enter the Boot Block.

4. Press the Enter button to select .

6. The segment shows . Start playing the MIDI file from the sequencer.

While a file is loading, the bottom line of the display shows the progress. If the display

continues to show

sequence.

7. After the file is loaded, the unit will reset.

after starting the sequencer, stop and restart the

Replacing the Battery

The Mark Pro 2i uses a flat three volt Lithium coincell battery. 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.

35

Mark Pro TWOi

Accessing the Battery

1. Place the Mark Pro 2i upside down on a flat protected surface.

2. Remove top assembly and set it safely aside.

Removing the Battery

The battery (CR2032) in the Mark Pro 2i 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.

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

1. Position the battery over the holder so that the positive terminal is pointing to the Engine

Board.

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

3. Install the seven screws to secure the top assembly.

36

Mark Pro TWOi

Mark Pro 2i Scanner test

The Scanner Tests for the Mark Pro 2i include separate tests for the front panel buttons and

LEDs, the keyboard, and the pedals.

To enter the Scanner Tests, first turn on the Mark Pro 2i. Once the Mark Pro 2i is on and ready to

play, simultaneously hold down the Effect

panel LEDs will flash and the segment will display the following:

Effect, Transpose + and Transpose - buttons. All front

EffectEffect

Figure 4-2 Segment example, Mark Pro 2i scanner tests

“SP2”, “SCn”, then “vX.Y” are displayed briefly in sequence vX.Y means version of the scanner

installed the unit.

“bAt” means “Battery” and the voltage is X.Y volts. Normal battery voltage is around 3.0 volts

where 3.2v is typical for a new battery and less than 2.8 means the battery is nearing the end of

its life and has only a few months left. At 2.2 volts, warning will begin. A completely dead oe

missing battery may not read exactly 0.0v but will certainly read less than 1.0v.

Last is a display of which option diodes have been installed. First “jPr” is displayed briefly then

4 vertical lines will show briefly. Each line represents an option diode from Opt1(leftmost) to

Opt4(rightmost) A long line(2 segments long) mans the corresponding diode is installed while a

short line(1 segment) is not installed. Option settings normally tell the scanner software the

keyboard length and weight and should match the actual unit.

Front Panel Buttons

When a button is pressed, its LED(if any) turns on and its matrix address is shown in the

display. Each press of Knob Mode will right the next Knob Mode LED in a top down sequences.

Rhythm and Program button has two color led, each button press, RED and GREEN LEDs turns

on alternatively.

37

Mark Pro TWOi

Keyboard

When a keyboard key is pressed, the key’s musical pitch should be shown in the display. The

first character should be the note name .The second character should be blank for white keys or

a “high o(sharp sign) for black keys. The third character should be the octave number from 0

to 8. Thus Middle C will be shown as “C 4”

Besides the key name, the 3 decimal points in the display reveal important information about

the rubber switches under the key being pressed. When the key is pressed partially, the left

decimal point will indicate that the first rubber switch and made contact. When the key is

pressed further, the middle decimal point indicates that the key is pressed further, the middle

decimal points indicates that the second rubber switch has also made contact. Thus when a key

is pressed slowly, the following sequence should be observed exactly 0.

Blank Display -> Correct Key name and left decimal point -> Correctly Key name and left and

center decimal points

If the correct key name and only the center decimal point lights, then there is a defect associated

with the first switch. If all 3 decimal points light, then either more than one key is processing at

once or there is a short circuit in the connecting or on the connector.

Switch Pedals

If a single switch pedal is plugged into the SW jack, operating it should case a response in the

display. For Kurzweil pedals , pressing the pedal should cause “S1C” to be displayed while

releasing it should cause “S1o” to be displayed. Other vender’s pedals may cause the opposite

response. If a dual pedal is plugged in, then the Sustain (right) pedal should display as

described above. The Soft pedal(left) should cause “S2C” and “S2o” to display. As with the

buttons , the display should respond immediately and without flickering if pedal working

properly.

Power Proble

ms

Dead

1. Before opening the unit, verify the following:

38

Mark Pro TWOi

• The AC outlet is supplying power.

• The power jack is properly connected to the unit.

2. Check the power switch, power jack and AC adapter.

3. Refer to the Interconnect Diagram. Check all related connections.

4. Refer to the Amp Board schematics and check all supply voltages.

Audio Problems

No Audio

1. Refer to the Interconnect Diagram.

2. Check the standard wire from J9 on the Engine Board to J15 on the Amp Board.

3. Check the solder connections at the connectors.

4. Refer to the Engine Board schematics and check the signal activity on the DAC, U28.

6. Trace the signal path.

Front Panel Problems

Buttons, Knobs or Controllers not working

1. Run the Scanner Tests.

2. Refer to the Interconnect Diagram.

3. Check all related cables.

39

Mark Pro TWOi

4. Disconnect and reseat the cables.

5. Check the solder connections at the connectors.

6. Check front panel ribbon cable(s).

7. Refer to the Scanner Board schematics and check U12, IC Scanner 38869, for signal activity.

Keyboard Problems

Dead Keyboard

1. Check the flat ribbon cables connecting the keyboard Bass and Treble Contact Boards to

the Scanner Board, locations J2 and J3. Be certain that the cables are not loose or damaged.

2. Disconnect and reseat the cables.

3. Refer to the Scanner Board schematics.

4. Check U12, IC Scanner 38869 on the Scanner Board for keyboard signals.

5. Trace signal path.

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

One or More in a Section

1. Remove related contact board.

2. Check contact strip for dirt, damage or wearing. Clean dirty contacts with denatured

alcohol. Replace damaged or worn contact strip.

3. Install contact strip.

40

Mark Pro TWOi

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 replacement board.

Mechanical Noise

Check keyboard for broken key weights, support brackets, or ripped contacts.

41

Mark Pro TWOi

Chapter 5
Parts Lists

Introduction

The parts lists included in this chapter cover all models of the Mark Pro 2i. Some printed circuit

boards and assemblies are used in more than one model. Therefore, the parts lists on the

following pages are listed under these headings:

The following two tables list the printed circuit boards and assemblies by model.

Mark Pro 2i Printed Circuit Boards and Assemblies

42

Mark Pro TWOi

Engine Board

Part Number

N052901610 CAP ELECT GP 10uF 16V 20% SZB SMT 4 C1,C200,C202,C208

N052007825 CAP CER X7R 0.1UF 50V 10% X7R 0603 74

N051007810 CAP CER 1000PF 50V 10% X7R 0603 6 C5,C59,C64,C70,C75,C128

N052007809 CAP CER NPO 100pF 50V 5% NPO 0603 1 C6

N052901622 CAP ELC GP 220UF 10V 20% SZE SMT 2 C17,C209

N052007814 CAP CER NPO 15pF 50V 5% 0603 1 C32

N052007833 CAP CER NPO 33pF 50V 5% NPO 0603 2 C33,C34

N052007827 CAP CER NPO 270PF 50V 5% NPO 0603 8 C58,C61,C63,C66,C69,C72,C74,C76

N052901011 CAP ELECT GP 22uF 10V 20% SZC SMT 1 C164

Part Name Description Q'ty

Reference

C2~4,C8~11,C12~14,C19,C20,C51,C55,C

56,C60,C62,C65,C67,C68,C71,C73,C129,C

130,C132~163,C165~168,C170,C172~183

,C206

NEW CAP CER NPO 22pF 50V 5% 0603 2 C169,C171

N052901601 CAP ELECT GP 100uF 16V 20% SZC ZMT 2 C201,C204

NEW CAP CER X7R 0.01UF 50V 10% 0603 1 C207

N253000712

N053000802 DIODE SWITCH 1N4148 SMT DL-35 2 D6,D8

N053000703

N041030150

N041030003

N041034010

N041034008

DIODE SHTKY

SIG 5NS LO-C S

DIODE RECT GP

SMT 1A S1A S

HEADER DUAL

0.1"SQR 50POS

CON HDR SIP

0.1" SQR PIN

JMPR

HEADER .098"SP

10P

HEADER .098"SP

8P

BAS40 SOT-23 2 D2,D11

1N4001 1206 1 D7

DIGIKEY S2012-50-ND 1 J1

3P 2 J2,J14

10P 1 J4

(22-03-5085) 1 J6

43

Mark Pro TWOi

N041034005

N041034004

N035040201

N041030002

N055001505

N055001509 IND FE BD SMT

N054000102 TRANSISTOR MMBT3904 SOT-23 1 Q1

N054010101

HEADER .098"SP

5P

HEADER

0.098"SP 4P(22-

03-5045)

BATTERY

HOLLDER

TOSHIBA

HEADER .1"SP

SGL ROW 2P

IND FE BD 2.5-

TURN SMT

TRANSISTOR

PNP

(22-03-5055) 1 J9

YDP2000N 1 J10

(BV-32) PC-88 1 J13

(22-03-2021) 1 J16

2 L3,L15

500mA 600 OHM @ 100MHz

3 L13,L14,L16

0805

KSA931 TO-92L 1 Q2

N054000802 TRANSISTOR MMBT2222L SOT-23 1 Q3

N051100010

RES NET QUAD

ISO

N051102103 RELAY, 5V DPDT (G6H-2-DC5) 2 RY1,RY2

N051064130 RES CF 1.3KΩ 5% 1/16W 0603 1 R1

N051064220 RES TF 2.2KΩ 5% 1/16W 0603 2 R2,R7

N051064100 RES CF 1KΩ 5% 1/16W 0603 3 R3,R30,R54

N052064015 RES TF 1.5Kohm 5% 1/16W 0603 2 R4,R87

N051064470 RES TF

NEW RES TF 10KΩ 5% 1/16W 0603 19

N051064010 RES TF 100ohm 5% 1/16W 0603 2 R19,R32

N051064022 RES TF 220Ω 5% 1/16W 0603 1 R22

NEW RES TF 330Ω 5% 1/16W 0603 2 R24,R91

N051064109 RES CF 1.0MΩ 5% 1/16W 0603 1 R27

10KΩ5% 1/16W

3.2mmX1.6mm

4.7 ㏀ 5% 1/16W 0603

4 RN1,RN2,RN3,RN4

3 R5,R80,R85

R9,R12,R13,R14,R18,R55,R69,R70,R72,R7

3,R74,R75,R78,R104,R105,R106,R107,R10

8,R109

N051064820 RES TF 820 OHM 5% 1/16W 0603 1 R29

NEW RES TF 10.7K OHM 1% 1/16W 0603 8 R35,R40,R41,R46,R47,R53,R56,R61

44

Mark Pro TWOi

2

NEW RES TF 4.75K OHM 1% 1/16W 0603 17

N051064004 RES TF 47Ω 5% 1/16W 0603 1 R68

NEW RES TF 18ohm 1% 1/16W 0603 2 R81,R82

N051064109 RES CF 1.0MΩ 5% 1/16W 0603 3 R83,R84,R86

NEW RES TF 620ohm 5% 1/16W 0603 1 R110

NEW RES TF 120ohm 5% 1/16W 0603 2 R111,R112

NEW RES CF 196OHM 5% 1/16w 0603 1 R113

NEW RES CF 52ohm 5% 1/16W 0603 1 R114

N055004301

N262001301

N062100410

N262005532

EMI

EXC-EMT470BT 1 T2

FILTER,DUAL

IC MC

MOTOROLA 1 U1

68331CPV25

IC MEM SRAM

TSOP44-400 LOW PWR 1 U3

256kX16 55nS

IC FLASH

AM29F160D 1 U4

MEMORY

R36,R37,R38,R39,R42,R43,R44,R45,R48,R

49,R50,R51,R52,R57,R58,R59,R60

NEW IC LOGIC 74LCX139 TSSOP16 1 U9

NEW

N061007143 IC LOGIC

N061007142 IC LOGIC

N061000910 IC LOGIC NC7SU04 UNBUF INV SoP23-5

N062004905

N062005704

N064003511 OPAMP

N062004923 DAC

IC MEM DDR

SDRAM 2Mx16x4

IC IF UART

ST16C550

W/FIFO

IC GAL 16V8A-

15QJ

MT46V8M16TG(MICRON) 1 U11

IC DIG 74LCX162245 16-Bit

2 U12,U13

BUS XCEIVER

IC DIG 74LCX2245 8-Bit BUS

1 U15

XCEIVER

U22,U24

PLCC44P 1 U23

SMT,PLCC20 1 U26

IC ANA OPAMP NJM4580 DL

2 U27,U30

BIP LO-NOIS SOP8-160

IC IF DAC AK4382VF DL 24B

1 U28

DS +5VS VSOP16

N064003502 IC LINEAR +5V LM78M05 500mA TO-220 1 U29

45

Mark Pro TWOi

N061007144 IC LOGIC 74VHC14 SOP14-150 1 U38

N061011008 IC LOGIC 74AC08 SOP14-150 1 U39

NEW IC ASIC MARA FBGA388 1 U46

N083071801

NEW

NEW IC REG ADJ LM1117SX-ADJ TO-263 2 U55,U56

NEW

N059010062

N059010080

N035040105

IC MASKROM OKI

MR27V128000J

IC USB

FUNCTION

GENERAL

PURPOSE

IC REG 2.5V

FIXED

XTL 24.576MHZ

+/-50PPM FND

XTAL 6.0MHz

FND PAR

BATTERY

COINCELL 3V

195mah

SP2, 830178-001 1 U47

1 U48

LP2992IM5-2.5 1 U57

18PF SMT 아부라콘(A245K9Y)

50ppm SMT HC49 1 X4

CR2032, TOSHIBA 1 @J13

1 X2

N041010302 JUMPER CAP J2 1 J2

46

Mark Pro TWOi

Scanner Board

Part Number Part Name Description Q'ty Reference

N052007402 CAP CER X7R 1000PF X7R 10% 0603 4 C8,C24,C25,C26

N052007503 CAP CER X7R 0.1UF 50V 10% 0603 8

N052007033 CAP CER NPO 33pF 50V 5% NPO 0603 2 C5,C6

N053000802 DIODE SWITCH 1N4148 SMT DL-35 1 D5

N041031220

N041034010 HEADER .098"SP 10P (22-03-5105) 1 J6

N041034004 HEADER .098"SP 4P (22-03-5045) 1 J9

N041034006 HEADER .098"SP 6P (22-03-5065) 1 J12

N055001505 IND FE BD 2.5-TURN SMT 1 L1

N051100010 RES NET QUAD ISO

N051100011 RES NET QUAD ISO

N051101790 RES CF 1.0MΩ 5% 1/16W 0603 3 R1,R10,R99

HEADER .1"SP DUAL

(057-020-153) 3 J2,J3,J4

ROW 20P

10KΩ5% 1/16W

3.2mmX1.6mm

100Ω5% 1/16W

3.2mmX1.6mm

C4,C7,C9,C10,C11,C12,C14,C1

6

6 RN1,RN2,RN4,RN9,RN10,RN14

RN3,RN5,RN6,RN7,RN8,RN11,

8

RN12,RN13

R2,R3,R4,R5,R6,R7,R8,R11,R1

N051101757 RES CF 10KΩ 5% 1/16W 0603 28

N015101714 RES CF 110Ω 5% 1/16W 0603 5 R14,R15,R42,R45,R47

N051101705 RES CF 4.7KΩ 5% 1/16W 0603 1 R35

N051101747 RES CF 4.7MΩ 5% 1/16W 0603 1 R36

N061014003 IC LOGIC MC74HC541DW SOP-20 1 U2

N262100701 IC M38869 FFAGP FLASH MEMORY 1 U12

N059010081 XTL 6.144MHZ +/-50PPM PAR 18PF SMT 1 Y1

2,R13,R17,R18,R20,R21,R22,R

24,R26,R27,R28,R29,R30,R38,

R40,R43,R46,R48,R52,R53

47

Mark Pro TWOi

Audio Board

Part Number

CAP CER X7R 1uF 50V 10% 0603 1 C43

N052007503 CAP CER X7R 0.1uF 50V 10% 0603 13

CAP ELEC 1000uF 10V 20% 35D 51mmH 1

N052002401 CAP ELECT 100uF 16V 20% 0.138"SP 3 C2,C7,C9

N052003506 CAP POLY 0.01uF 50V 5% RAD 2 C9,C12

N052003505 CAP POLY 0.0047uF 50V 5% 0.2"SP 1 C10

CAP ELECT 2200uF 25V 20% RAD 2 C5,C10

N052080052 CAP CER NPO 470pF 50V 5% 0603 2 C13,C18

N052007004 CAP CER NPO 1000pF 50V 5% 0603 9

CAP ELEC BP 6.8uF/50V BIPOLAR 2 C28,C32

N052010022 CAP POLY 0.22uF 50V ECQ-V1H224J 2 C11,C14

N052003709 CAP POLY 0.1uF 50V 5% 0.2SP 6 C19,C21,C22,C23,C34,C35

CAP ELEC 47UF 16V 20% 2 C45,C46

Part Name Description Q'ty Reference

C1,C3,C4,C6,C8,C41,C47,C4

8,C49,C50,C51,C52,C53

C12,C15,C16,C17,C37,C38,C

39,C40,C42

N052001701 CAP ELECT 1uF 25V 20% 2 C30,C36

N053010502 DIODE SHOTTKY 5817(SS12) SMT 1A 20V 1 D4

N053000802 DIODE SWITCH IN4148 SMT DL-35 2 D2,D3

HEADER .156"SP 5P HEADER 1 J1

N041025302 HEADER 0.156"SP 2P HEADER 4 J5,J6,J7,J8

N041021711 CONN QUAD RCA (SH-R16412) 1 J2

N041034008 HEADER .098"SP 8P (22-03-5085) 1 J11

N041033310 CONN USB FEMALE TYPE-B RECEPTICLE 1 J14

N041034004 HEADER 0.098"SP 4P (22-03-5045) 1 J13

N041034005 HEADER 0.098"SP 5P (22-03-5055) 1 J3

N041034006 HEADER 0.098"SP 6P (22-03-5065) 1 J4

N041034007 HEADER 0.098"SP 7P (22-03-5075) 1 J12

MIDI JACK 2 J9,J10

N054000802 TRANSISTOR MMBT2222 SOT-23 7 Q1,Q2,Q3,Q4,Q5,Q9,Q10

N054002906 TRANSISTOR MMBT2907 SOT-23 3 Q6,Q7,Q8

RES CF 10K OHM 5% 1/16W 0603 4 R271,R28,R53,R54

RES CF 1.8K OHM 5% 1/16W 0603 1 R52

48

Mark Pro TWOi

RES CF 560 OHM 5% 1/16W 0603 2 R34,R35

RES CF 150K OHM 5% 1/16W 0603 1 R55

RES TF 4.3K OHM 1% 1/16W 0603 2 R19,R22

RES MF 17.8K OHM 1% 1/16W 0603 2 R5,R10

RES MF 15.8K OHM 1% 1/16W 0603 2 R4,R13

RES TF 18K OHM 5% 1/16W 0603 2 R32,R33

RES TF 1.2K OHM 5% 1/16W 0603 2 R15,R16

RES TF 49.9K OHM 1% 1/8W 0603 2 R7,R12

RES TF 68K OHM 5% 1/16W 0603 2 R17,R18

RES TF 110 OHM 5% 1/16W 0603 2 R41,R43

RES TF 220 OHM 5% 1/16W 0603 3 R24,R25,R39

RES TF 270 OHM 5% 1/16W 0603 1 R45

RES CF 4.7 OHM 5% 1/4W 1206 2 R36,R37

RES CF 1K OHM 5% 1/16W 0603 4 R6,R8,R9,R11

RES CF 56 OHM 5% 1/16W 0603 4 R38,R40,R42,R44

RES CF 4.7K OHM 5% 1/16W 0603 4 R20,R21,R23,R26

N051101724 RES CF 470 OHM 5% 1/16W 0603 2 R49,R50

N051120056 RES CF 5.6K OHM 5% 1/16W 0603 2 R51,R46

N051101790 RES CF 1.0M OHM 5% 1/16W 0603 1 R48

N051101734 RES TF 1.5K OHM 5% 1/16W 0603 1 R47

N061010302 IC LOGIC 74HCU04 SOP14 1 U9

IC PC410 PC410-SOP6 1 U8

IC ANA POWER AMP

IC ANA OPAMP DL BIP

N064003511

LO-NOIS

IC LINEAR +12V 7812 1A TO-220 1 U2

IC LINEAR -12V KTA7912 1A TO-220 1 U1

20W+20W DUAL BRIDGE

1 U14

AMPLIFIER

NJM4580E SOP8-160 1 TDA7265

49

Mark Pro TWOi

2

Front Board

Part No Part Name Description Q’ty

N052002422 CAP ELECT ECE-BOJU471

N052007503 CAP CER X7R 0.1UF 50V 10% 1206 3 C3,C4,C5

LED DISPLAY

LED SMT RED/GREEN WATER

N045010902

CLEAR

N045010111 LED T1 RED HIGH EFF PC1SE 1 D2

LED SMT RED WATER CLEAR 120

N045010901

degree view 1206

N041031220 HEADER .1"SP DUAL ROW 20P (057-020-153) 1 J1

N041030326 HEADER .1"SP DUAL ROW 26P (057-026-153) 1 J4

N041030326 HEADER .1"SP DUAL ROW 26P (057-026-153) 1 J5

N041034056 HEADER .098"SP 5P (22-03-5055) 2 J2, JX

N054002906 TRANSISTOR PNP MMBT2907L SOT23 10 Q1~Q10

470UF 6.3V 3.5mmSP

2 C1,C2

0.11mm

3 X 7 SND630ASR(Common

1 DS1

Cathod)

KINGBRIGHT AA2734SRSGC

KINGBRIGHT

31

APTD3216SRCPRV

Reference

D1,D17

D3~D5,D8~D16,D18

~D36

N054000802 TRANSISTOR MMBT2222 SOT-23 8 Q11~Q18

N051064033 RES TF 33Ω 5% 1/16W 0603 8

NEW RES CF 10K Ohm 5% 1/16W 0603 18

N051005011 RES CF 4.7Ohm 5% 1/8W 1 R16

N043003703 TACT SWITCH(160gf, BLUE/GRAY) SAMWON TSM155JK 36 SW1~SW36

N061000302 IC LOGIC SOP16 74LS145 1 U1

N061020502 IC LOGIC OCTAL LATCH SOIC 20 74HC373A 1 U2

N061014003 IC LOGIC SOP20 MC74HC541DW 1 U3

10K LIN H15xL9.8xW12.5

N051101421 RES POT

V09H20F(백조전자)

R1,R4,R8,R11,R15,R1

7,R18,R32

R2,R3,R5~R10,R12~R

14,R19~R26

1

50

Mark Pro TWOi

Head Phone Board

Part Number Part Name Description Q'ty Reference

N041021007 HEADPHONE JACK MARK-XXX 2

N052001204 CAP CERMONO Z5U .1UF 50V 20% .3AX 2

N041034005 HEADER 0.098SP 5P 1

51

Mark Pro TWOi

Chapter 6
Schematics

Engine Board Micro Processor(68331) Interface

52

Mark Pro TWOi

Engine Board DRAM, LEVEL, SHIFTER

53

Mark Pro TWOi

Engine Board MARA

54

Mark Pro TWOi

Engine Board Sound ROM, UART, USB, BRIDGE

Engine Board POWER, CLOCK, PLL

55

Mark Pro TWOi

Scanner Board 38869 Interface

56

Mark Pro TWOi

57

Mark Pro TWOi

Scanner Board Front Interface

58

Mark Pro TWOi

Front Board Left

59

Mark Pro TWOi

Front Board Right

60

Mark Pro TWOi

Amp Board Engine IO, MIDI IN & OUT

61

Mark Pro TWOi

Amp Board Speaker, Line IN & OUT, Headphone

62