Panasonic KX-MB1500UCB Service manual

ORDER NO.KMF1107371CE

Multi-Function printer

Model No. KX-MB1500UCB

(for Ukraine, Kazakhstan)

© Panasonic System Networks Co., Ltd. 2011 Unauthorized copying and distribution is a violation of law.

KX-MB1500UCB

TABLE OF CONTENTS

	PAGE
1 Safety Precautions -----------------------------------------------		5
1.1. For Service Technicians ----------------------------------		5
1.2. AC Caution---------------------------------------------------		5
1.3. Personal Safety Precautions ----------------------------		6
1.3.1. Moving Sections of the Unit-------------------------		6
1.3.2. Live Electrical Sections ------------------------------		6
1.4. Service Precautions ---------------------------------------		6
1.4.1. Precautions to Prevent	Damage from
Static Electricity ----------------------------------------		6
2 Warning --------------------------------------------------------------		7
2.1. About Lead Free Solder (PbF: Pb free) --------------		7
2.1.1. Suggested PbF Solder -------------------------------		7
2.2. Discarding of P. C. Board --------------------------------		8
2.3. Insulation Resistance Test -------------------------------		8
2.4. Battery Caution ---------------------------------------------		8
2.5. Laser Beam and Fuser Unit Section ------------------		8
2.6. Note for Repairing------------------------------------------		9
3 Specifications ----------------------------------------------------		10
4 General/Introduction-------------------------------------------		11
4.1. Optional Accessories------------------------------------		11
4.2. Translation Lists ------------------------------------------		11
4.2.1. Error Message (Display)---------------------------		11
5 Features------------------------------------------------------------		12
5.1. General Features-----------------------------------------		12
5.2. Hardware Requirements for	Multi-Function
Software ----------------------------------------------------		12
6 Technical Descriptions----------------------------------------		13
6.1. Connection Diagram-------------------------------------		13
6.2. General Block Diagram---------------------------------		14
6.3. Main Board Section--------------------------------------		16
6.3.1. Data Flow----------------------------------------------		16
6.4. CIS Control Section--------------------------------------		24
6.5. Motor Drive Section--------------------------------------		26
6.5.1. Engine Motor Control Circuit ---------------------		26
6.5.2. FB (Flat bed) motor drive circuit -----------------		29
6.6. Timing chart and wave form of scanner
motors-------------------------------------------------------		31
6.6.1. Drive mode of FB motor ---------------------------		31
6.6.2. Normal 1-2 phase excitation (half step)--------		32
6.6.3. W1-2 phase excitation (Quarter step) ----------		33
6.6.4. W1-2 phase excitation (Quarter step) ----------		34
6.7. FAN Motor Section---------------------------------------		35
6.7.1. General ------------------------------------------------		35
6.7.2. Circuit Diagram of FAN ----------------------------		35
6.7.3. Speed Control Block --------------------------------		35
6.7.4. Abnormal detect and Lock protect Block ------		38
6.8. Solenoid Driver Section --------------------------------		39
6.9. LSU (Laser Scanning Unit) Section -----------------		40
6.10. Sensors and Switches Section	-----------------------	42
6.10.1. Pick up & Registration & Manual paper
sensor -------------------------------------------------		43
6.10.2. Print timing sensor ----------------------------------		43
6.10.3. Exit sensor --------------------------------------------		44
6.10.4. Interlock switch---------------------------------------		44
6.10.5. Toner Sensor -----------------------------------------		45
6.10.6. Drum Life sensor circuit----------------------------		46
6.11. Operation Board Section -------------------------------		47
6.12. LCD Section -----------------------------------------------		48

PAGE
6.13. HVPS (High Voltage Power Supply) Section -----	49
6.13.1. HVPS Specification for EUK1MNB31HA------	49
6.13.2. CHG-BIAS (Charge BIAS)/UNIT ----------------	49
6.13.3. DEV DC BIAS UNIT--------------------------------	50
6.13.4. DEV AC BIAS UNIT --------------------------------	50
6.13.5. TRA (-) BIAS (Transfer (-) BIAS)/TRA (+)
BIAS (Transfer (+) BIAS) UNIT------------------	50
6.14. Heat Lamp Control Circuit-----------------------------	51
6.15. Main Board Power Supply Section------------------	56
6.15.1. 3.3V and 1.2V Power Supply Descriptions ---	56
6.15.2. +5VD Power Supply Descriptions --------------	57
6.16. Power Supply Board Section -------------------------	59
6.17. Mechanical Operation ----------------------------------	60
6.17.1. Printing ------------------------------------------------	60
7 Location of Controls and Components -----------------	61
7.1. Overview---------------------------------------------------	61
7.1.1. Front view---------------------------------------------	61
7.1.2. Rear view ---------------------------------------------	61
7.2. Control Panel ---------------------------------------------	62
8 Installation Instructions --------------------------------------	63
8.1. Installation -------------------------------------------------	63
8.1.1. Installation Space -----------------------------------	63
8.1.2. Recording Paper -----------------------------------	64
8.1.3. Documents the Unit Can Send ------------------	68
8.1.4. Toner Cartridge --------------------------------------	68
8.1.5. Required computer environment----------------	71

8.1.6.Installing Multi-Function Station on a

computer ----------------------------------------------	72
8.2. Connections-----------------------------------------------	73
9 Test Mode ---------------------------------------------------------	74
9.1. Test Functions --------------------------------------------	74
9.1.1. Button Code Table ----------------------------------	75
9.1.2. Print Test Pattern------------------------------------	76
10 Service Mode-----------------------------------------------------	77
10.1. Programming and Lists---------------------------------	77
10.1.1. Operation ---------------------------------------------	77
10.1.2. Operation Flow --------------------------------------	77
10.1.3. Service Function Table ----------------------------	78
10.1.4. Memory Clear Specification ----------------------	78
10.2. User Mode (The list below is an example of
the SYSTEM SETUP LIST the unit prints out.) --	79
10.3. History (Example of a printed out list) --------------	80
10.3.1. Descriptions of The History Report-------------	81
11 Troubleshooting Guide ---------------------------------------	82
11.1. User Recoverable Errors ------------------------------	82
11.1.1. Program Mode Table-------------------------------	84
11.2. Troubleshooting Details --------------------------------	86
11.2.1. Outline -------------------------------------------------	86
11.2.2. Starting Troubleshooting --------------------------	86
11.2.3. Initialization -------------------------------------------	87
11.2.4. Simple Check List-----------------------------------	88
11.2.5. Simplified Troubleshooting Guide---------------	89
11.2.6. CALL SERVICE Troubleshooting Guide ------	92
11.2.7. Print ----------------------------------------------------	98
11.2.8. Recording Paper Feed ---------------------------	104
11.2.9. Copy and FAX --------------------------------------	111
11.2.10. Initializing Error -------------------------------------	113
11.2.11. Operation Panel Section -------------------------	114

2

KX-MB1500UCB

11.2.12. Sensor Section -------------------------------------	114	14.4.2. Removal Procedure ------------------------------					174
11.2.13. Motor Section ---------------------------------------	116	14.4.3. Procedure -------------------------------------------					175
11.2.14. LSU Section-----------------------------------------	118	14.4.4. Removing Solder From Between Pins -------					175
11.2.15. CIS Control Section -------------------------------	119	14.5. Main Board Section------------------------------------					176
11.2.16. High Voltage Value Check Point ---------------	121	14.5.1. NG Example ----------------------------------------					177
11.2.17. High Voltage Section------------------------------	123	14.6. Test Chart	------------------------------------------------				178
11.2.18. USB Section ----------------------------------------	128	14.6.1. ITU-T No.1 Test Chart----------------------------					178
11.2.19. Main Board Section -------------------------------	133	14.6.2. ITU-T No.2 Test Chart----------------------------					179
11.2.20. Power Supply Board Section -------------------	134	15 Schematic Diagram ------------------------------------------					181
11.3. Recording Paper Jam ---------------------------------	137	15.1. For Schematic Diagram ------------------------------					181
11.3.1. When the recording paper has jammed		15.2. Main Board ----------------------------------------------					182
inside of the unit------------------------------------	137	15.2.1. Main Board (1) -------------------------------------					182
11.3.2. When the recording paper is not fed into		15.2.2. Main Board (2) -------------------------------------					186
the unit properly ------------------------------------	140	15.3. Sensor Board -------------------------------------------					188
11.3.3. When the recording paper in the manual		15.3.1. Operation Board -----------------------------------					188
input tray is not fed into the unit properly ----	141	15.3.2. Sensor Board---------------------------------------					189
12 Service Fixture & Tools--------------------------------------	142	15.4. High Voltage Power Supply Board-----------------					190
13 Disassembly and Assembly Instructions -------------	143	15.5. Low Voltage Power Supply Board -----------------					191
13.1. Flow Chart for Disassembly--------------------------	144	16 Printed Circuit Board ----------------------------------------					193
13.2. How to Remove Rear Cover-------------------------	145	16.1. Main Board ----------------------------------------------					193
13.3. How to Remove Front Cover -----------------------	145	16.1.1. Main Board: Component View -----------------					193
13.4. How to Remove Right Cover ------------------------	146	16.1.2. Main Board: Bottom View -----------------------					194
13.5. How to Remove Left Cover --------------------------	147	16.2. Sensor Board -------------------------------------------					195
13.6. How to Remove FB Unit ------------------------------	148	16.2.1. Operation Board -----------------------------------					195
13.7. How to Remove Upper Cabinet Cover------------	149	16.2.2. Interlock Board-------------------------------------					196
13.8. How to Remove Bottom Plate-----------------------	150	16.2.3. Gear Board -----------------------------------------					196
13.9. How to Remove Power Board Unit-----------------	151	16.2.4. Toner Sensor Board ------------------------------					196
13.10. How to Remove Fuser Unit --------------------------	152	16.2.5. Fuser Board ----------------------------------------					197
13.11. How to Remove Fan, HVPS and Inter-lock		16.3. High Voltage Power Supply Board-----------------					198
Board ------------------------------------------------------	152	16.3.1. High	Voltage	Power	Supply	Board:
13.12. How to Remove Main Board and Shield Cover - 153		Component View ----------------------------------					198
13.13. How to Remove Drive Unit ---------------------------	153	16.3.2. High Voltage Power Supply Board: Bottom
13.14. How to Remove Clutch Gear Cover ---------------	154	View---------------------------------------------------					198
13.15. How to Remove Pick-up Roller ---------------------	155	16.4. Low Voltage Power Supply Board -----------------					199
13.16. How to Remove Operation Panel Unit ------------	156	16.4.1. Low	Voltage	Power	Supply	Board:
13.17. How to Disassemble FB Unit ------------------------	157	Component View ----------------------------------					199
13.18. How to Remove LSU and Glasses-----------------	158	16.4.2. Low Voltage Power Supply Board: Bottom
13.19. Installation Position of The Lead--------------------	159	View---------------------------------------------------					199
13.19.1. Main cabinet section ------------------------------	159	17 Exploded View and Replacement Parts List ---------					200
13.19.2. Side cabinet section(1) ---------------------------	160	17.1. General Section ----------------------------------------					201
13.19.3. Side cabinet section (2) --------------------------	161	17.1.1. Operation Panel Section ------------------------					202
13.19.4. Side cabinet section (3) --------------------------	162	17.1.2. Top Cover Section (1) ---------------------------					204
13.19.5. Side cabinet section (4) --------------------------	163	17.1.3. Top Cover Section (2) ----------------------------					206
13.19.6. Fuser section ---------------------------------------	164	17.1.4. Top Cover Section (3) ----------------------------					208
13.19.7. Power supply unit section -----------------------	165	17.1.5. Top Cover Section (4) ----------------------------					210
14 Maintenance-----------------------------------------------------	166	17.1.6. Fuser Section --------------------------------------					212
14.1. Maintenance Items and Component Locations - 166		17.1.7. Main Cabinet Section (1) ------------------------					214
14.1.1. Outline ------------------------------------------------	166	17.1.8. Main Cabinet Section (2) ------------------------					216
14.1.2. Maintenance Check Items/Component		17.1.9. Main Cabinet Section (3) ------------------------					218
Locations---------------------------------------------	166	17.1.10. Main Cabinet Section (4) ------------------------					220
14.2. Maintenance ---------------------------------------------	168	17.1.11. Left-side Cabinet Section(1)--------------------					222
14.2.1. Cleaning the White Plates and Glass---------	168	17.1.12. Left-side Cabinet Section(2)--------------------					224
14.3. Printing Operation Principle--------------------------	169	17.1.13. Left-side Cabinet Section(3)--------------------					226
14.3.1. Process Chart and Process BIAS -------------	169	17.1.14. Power Supply Unit Section ---------------------					228
14.3.2. Charging ---------------------------------------------	169	17.1.15. Base Cassette Section---------------------------					230
14.3.3. Exposing ---------------------------------------------	170	17.1.16. Main Unit Section (1) -----------------------------					232
14.3.4. Developing and Transcription-------------------	171	17.1.17. Main Unit Section (2) -----------------------------					234
14.3.5. Cleaning of Transfer Roller----------------------	172	17.1.18. Actual Size of Screws and Washer -----------					236
14.3.6. Fixing -------------------------------------------------	173	17.1.19. Accessories and Packing Materials ----------					238
14.4. How to Replace the Flat Package IC--------------	174	17.2. Electrical Parts List ------------------------------------					240
14.4.1. Preparation ------------------------------------------	174	17.2.1. Main Board------------------------------------------					240

3

KX-MB1500UCB
17.2.2. Sensor Board---------------------------------------	243
17.2.3. High Voltage Power Supply Board ------------	244
17.2.4. Low Voltage Power Supply Board-------------	244

4

KX-MB1500UCB

1Safety Precautions

1.Before servicing, unplug the AC power cord to prevent an electric shock.

2.When replacing parts, use only the manufacturer's recommended components.

3.Check the condition of the power cord. Replace if wear or damage is evident.

4.After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.

5.Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent the customer from being exposed to shock hazards.

1.1.For Service Technicians

•Repair service shall be provided in accordance with repair technology information such as service manual so as to prevent fires, injury or electric shock, which can be caused by improper repair work.

1.When repair services are provided, neither the products nor their parts or members shall be remodeled.

2.If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced.

3.FASTON terminals shall be plugged straight in and unplugged straight out.

•ICs and LSIs are vulnerable to static electricity.

When repairing, the following precautions will help prevent recurring malfunctions.

1.Cover the plastic part's boxes with aluminum foil.

2.Ground the soldering irons.

3.Use a conductive mat on the worktable.

4.Do not touch the IC or LSI pins with bare fingers.

1.2.AC Caution

For safety, before closing the lower cabinet, please make sure of the following precautions.

1.The earth lead is fixed with the screw.

2.The AC connector is connected properly.

5

KX-MB1500UCB

1.3.Personal Safety Precautions

1.3.1.Moving Sections of the Unit

Be careful not to let your hair, clothes, fingers, accessories, etc., become caught in any moving sections of the unit.

The moving sections of the unit are the rollers and a gear. There is a separation roller and a document feed roller which are rotated by the document feed motor. A gear rotates the two rollers. Be careful not to touch them with your hands, especially when the unit is operating.

1.3.2.Live Electrical Sections

All the electrical sections of the unit supplied with AC power by the AC power cord are live. Never disassemble the unit for service with the AC power supply plugged in.

CAUTION:

AC voltage is supplied to the primary side of the power supply unit. Therefore, always unplug the AC power cord before disassembling for service.

1.4.Service Precautions

1.4.1.Precautions to Prevent Damage from Static Electricity

Electrical charges accumulate on a person. For instance, clothes rubbing together can damage electric elements or change their electrical characteristics. In order to prevent static electricity, touch a metallic part that is grounded to release the static electricity. Never touch the electrical sections such as the power supply unit, etc.

6

KX-MB1500UCB

2 Warning

2.1.About Lead Free Solder (PbF: Pb free)

Note:

In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that contains lead.

We will use PbF solder when discussing the lead free solder used in our manufacturing process which is made from Tin, (Sn), Silver, (Ag), and Copper, (Cu).

This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair work we suggest using the same type of solder although, with some precautions, standard Pb solder can also be used.

Caution

•PbF solder has a melting point that is 50° ~ 70° F, (30° ~ 40°C) higher than Pb solder. Please use a soldering iron with temperature control and adjust it to 700° ± 20° F, (370° ± 10°C). In case of using high temperature soldering iron, please be careful not to heat too long.

•PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100°F, (600°C).

•If you must use Pb solder on a PCB manufactured using PbF solder, remove as much of the original PbF solder as possible and be sure that any remaining is melted prior to applying the Pb solder.

•When applying PbF solder to double layered boards, please check the component side for excess which may flow onto the opposite side (See figure, below).

2.1.1.Suggested PbF Solder

There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper, (Sn+Ag+Cu), you can also use Tin and Copper, (Sn+Cu), or Tin, Zinc, and Bismuth, (Sn+Zn+Bi). Please check the manufacturer’s specific instructions for the melting points of their products and any precautions for using their product with other materials.

The following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3mm, 0.6mm and 1.0mm.

7

KX-MB1500UCB

2.2.Discarding of P. C. Board

When discarding P. C. Board, delete all personal information such as telephone directory and caller list or scrap P. C. Board.

2.3.Insulation Resistance Test

1.Unplug the power cord and short the two prongs of the plug with a jumper wire.

2.Turn on the power switch.

3.Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part (screw heads, control shafts, bottom frame, etc.).

Note: Some exposed parts may be isolated from the chassis by design. These will read infinity.

4.If the measurement is outside the specified limits, there is a possibility of a shock hazard.

2.4.Battery Caution

CAUTION

Danger of explosion if the battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s Instructions.

The lithium battery is a critical component (type No.CR2354). Please observe for the proper polarity and the exact location when replacing it and soldering the replacement litium battery in.

2.5.Laser Beam and Fuser Unit Section

•The printer of this unit utilizes a laser. Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

•The fuser unit is inside of the unit and gets hot. Do not touch it when removing the jammed paper or cleaning the lower glass.

Fuser Unit

Laser Scanning Unit

* In case of this figure, this Laser Caution Label is located on the other side of the LSU.

Laser

Caution

Label

8

KX-MB1500UCB

2.6.Note for Repairing

Caution

Please inform users of the danger of data being lost at the time of repair.

Data will be lost in the following situations.

1.When replacing the ROM ass'y.

2.When replacing the Main board ass'y.

3.When executing service mode #550 or #710. (Memory Clear) There is a possibility of data loss in the following situations.

1.When removing a board.

2.When writing new software to ROM.

9

KX-MB1500UCB

3 Specifications

Document Size:	Max. 216 mm in width, Max. 297 mm in length
Effective Scanning Width:	208 mm
Effective Printing Width:	Letter/ Legal: 208 mm
Scanning Density:	A4: 202 mm
	Scanning resolution:
	Up to 600 × 1,200 dpi (Optical)
	Up to 19,200 x 19,200 dpi (Interpolated)
	Copy resolution:
Photo resolution:	Up to 600 × 600 dpi
	64-level
Scanner Type:	Colour Contact Image Sensor
Printer Type:	Laser printer
Operating Environment:	10°C-32.5°C, 20%-70% RH (Relative Humidity)
Dimensions:	Approx. width 380 mm x depth 360 mm x height 203 mm
Mass (Weight):	Approx. 9 kg
Power Consumption:	Standby: Approx. 4 W
	Preheat: Approx. 55 W
	Copy: Approx. 350 W

Maximum: Approx. 950 W (When the fuser lamp turns on) Power Supply: 220-240 V AC, 50/60 Hz

Memory Capacity (for operation and 32 MB

storing memory):	Laser output: Max. 10 mW
Laser diode properties:
	Wavelength: 760 nm-800 nm
Print Speed:	Emission duration: Continuous
	A4: Approx. 18 ppm (pages per minute)
Printing Resolution:	Letter: Approx. 19 ppm (pages per minute)
	600 x 600 dpi
Maximum Monthly Duty Cycle:	5,000 printed pages
CIS’s LED light properties:	LED radiation output: Max. 1 mW
	Wavelength:
	Red 630 nm typical
	Green 520 nm typical
	Blue 465 nm typical
Product life:	Emission duration: Continuous
	30,000(Thirty thousand) pages or 5 years whichever comes first.

Note:

•Design and specifications are subject to change without notice.

•The pictures and illustrations in these instructions may vary slightly from the actual product.

10

KX-MB1500UCB

4 General/Introduction

4.1.Optional Accessories

Model No.	Description	Specifications
KX-FAT400A7	Replacement toner cartridge*1	1 toner cartridge
KX-FAT410A7	Replacement toner cartridge (high capacity)*2	1 toner cartridge

*1 Prints about 1,800 pages at ISO/IEC 19752 standard page.

*2 Prints about 2,500 pages at ISO/IEC 19752 standard page.

Note:

•ISO/IEC 19752 standard is as follows:

-Environment: 23 ± 2°C / 50 ± 10% RH

-Print mode: Continuous printing

4.2.Translation Lists

4.2.1.Error Message (Display)

11

KX-MB1500UCB

5 Features

5.1.General Features

General

LCD (Liquid Crystal Display) readout

Flat-Bed Multifunction Printer

Resolution: Standard/Fine/Super fine/Photo (64 level). STANDARD: For printed or typewritten originals with normalsized characters.

FINE: For originals with small printing.

SUPER FINE: For originals with very small printing. PHOTO: For originals containing photographs, shaded drawing, etc.

150-sheet paper capacity (64 g/m2 ~ 75 g/m2)

Approx. 150 pages of memory transmission Approx. 110 pages of memory reception

Enhanced Copier Function

Multi-copy function (up to 99 copies) Enlargement and reduction

64-Level halftone

5.2.Hardware Requirements for Multi-Function Software

To use Multi-Function Station on your computer, the following are required:

Operating System:

Windows 2000 / Windows XP / Windows Vista / Windows 7

CPU:

Windows 2000: Pentium® or higher processor Windows XP: Pentium or higher processor

Windows Vista / Windows 7: Pentium 4 or higher processor

RAM:

Windows 2000/Windows XP: 128 MB (256 MB or more recommended) Windows Vista: 512 MB (1 GB or more recommended)

Windows 7: 1 GB (2 GB or more recommended)

Other Hardware:

CD-ROM drive

Hard disk drive with at least 600 MB of available space USB interface

Other:

Internet Explorer® 5.0 or later

Warning:

•To assure continued emission limit compliance;

-use only shielded USB cable (Example: Hi-Speed USB 2.0 certified cable).

•To protect the unit, use only shielded USB cable in areas where thunderstorms occur.

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KX-MB1500UCB

6 Technical Descriptions

6.1.Connection Diagram

LCD

MIC

TO

PC/USB

		CN54
	REGISTER	REG
		DG
	CLUTCH

		CN53	CN52
PICKUP	PICK			SNPICK
			1	SNREG
	DG
SOLENOID			2	DG
			3	2B
			4	2A
			5	1A
			6	1B
			7

	MAIN		CN55
		1B	2
		1A
			1
	MOTOR	2A	3
		2B
			4

TONER CN59
SENSOR	TNR
1	GND
2	5V
3
IC53

	DB7	DB6	DB5	DB4	E	R / W	RS	V0	VDD	VSS

CN1

10	9 8 7 6 5 4 3 2 1

OPERATION PANEL BOARD

1 2 3 4 5 6 7 8 9

CN2

DC FAN

THRM KSTART KTXD KSCLK OPERST DG

5V MIC+ MIC-

DG FANON

1 2 3 4 5 6 7 8 9

1 2

CN509

CN511

CN506

A

1

XA

FB

2

XB

3

B

MOTOR

4

CISMODULE

No

NAME

No

NAME

12

SIG

11

DG

10

3.3V

9

VREF

CN510

8

CNT

7

SI

6

DG

5

CLK

4

VLED

3

LED_G

2

LED_R

1

LED_B

POWER SW

CN300

CN300

AC INLET

1

4 2

No

NAME

No

NAME

CN504

CN101

CN1

LIVE

3

1

VBUS

2

D

1

1

1

NEUTRAL

3

D+

4

GND

HTRCTL

2

2

5V

2

SMPS

4

4

3

GND

3

5

GND

5

CN2

24V

HEAT LAMP

6

6

1

MAIN BOARD

24V

7

7

2

PE

PSU COVER

CN502

CN503

CN57

FUSER

1

2

THRM1

2

UNIT

3

POUT

2

1

3.3V

1

EXIT SENSOR

4

3

GND

3

CN58

4

4

5

THRM1

6

1

7

2

DG

IC52

THERMISTOR

CN501

CN500

CN508

CN505

1 2 3 4 5

1 2 3 4 5 6 7

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

POLCLK XREADY

POLON DG

DG XHSYNC XVIDEO XLDEN XAPC

5V REG PTOP GND BATTERY

HEAT LAMP

24V

5VLD

DG

5VLD

TNR

F-USE

TRS DEV CHG GND HVFUSE

24V

THERMOSTAT

THERMOSTAT

LSU

CN1

1 2 3 4 5 6 7 8

TRANSCRIPTION

ROLLER

TRA

DRUM

LIFE

CN56

REGISTERS

CN50

1 2 3 4 5 6 7 8

1

ENSOR

DEV

2

3

CN51

CN2

1

24VIL

2

24V

IC51

3

DEVELOPING

PTOP

5V Interlock

24V Interlock

HVPS

ROLLER

OPC

SENSOR

Switch

Switch

TONER SUPPLY

DRUM

ROLLER

IC50

SW50

SW51

CHG

DRUM UNIT

13

KX-MB1500UCB

6.2.General Block Diagram

MAIN UNIT

SOC (IC300)

This custom IC is used for general MFP operations.

1)	CPU	ARM9 operating at 250MHz.
2)	SDRAM Controller	Controls SDRAM Memory.
3)	USB Controller with PHY	Apply to USB2.0 HS
4)	Scanner I/F	Controls the CIS and AFE, and process the scan images.
5)	LSU I/F	Controls the polygon motor and outputs the VIDEO signal to LSU.
6)	MOTOR I/F	Controls the DC motor and Stepping Motor.
7)	FAN I/F	Controls FAN MOTOR and detect the rotation of FAN MOTOR.
8)	OPERATION PANEL I/F	Serial interface with Operation Panel.
9)	SENSOR I/F	Detects the sensor signal.
10)	I/O PORT	I/O Port Interface.
11)	A/D, D/A converter	Sends beep tones, etc.
		Convert the analog signal to the digital signal.

ROM (IC402)

This 8MB FLASH ROM contains all of the program instructions on the unit operations.

SYNCHRONOUS DYNAMIC RAM (IC400)

This 256Mbit SDRAM is used for CPU work and receiving memory and page memory.

POWER SUPPLY

DC-DC converters generate 3.3V and 1.2V for system power.

Regurator generates 5V for peripheral devices.

READ SECTION

CIS Unit to read transmitted documents.

Scan data is converted by AFE(IC503).

MOTOR

This model has 2 stepping motors.

IC600 drives the stepping motor for printing.

IC502 drives the stepping motor for CIS carriage.

LSU

Forms the images on the OPC DRUM by rotating polygon motor and reflecting the laser beam against polygon.

SENSORS

Composed of 2 switches and 3 sensors.

POWER SUPPLY BOARD

Supplies +24V and +5V to the Main unit and controls the Heat Lamp.

HIGH VOLTAGE POWER SUPPLY BOARD

Supplies bias need for the printing operation: bias of the DRUM, Developing and Transcription.

FIXING UNIT

Composed heat lamp, thermistor and thermostats.

14

15

MB1520 series System Schematic

				Flat Bed
	Operation Panel Board
	2Line	Ope	Thermistor	Color CIS
			(Room)
	LCD	G/A		Carriage motor

Regist Clutch	AMP2	JST4	FFC 12
	AMP9

Pick Up Solenoid	JST2			Main Board
					Motor
			AMP7			AFE
	AMP4				Driver
Main motor
					(FB)
				Motor
				Driver
				(Main)
FAN			JST2	FLASH
				(64Mbit)	Sirius
			AMP7(Blue)	SDRAM	Lite
LSU				(256Mbit )
			AMP5
	JST2		AMP4			5V
					USB	3.3V/1.2V
Thermistor						DC-DC
(Heater)		EXIT Sensor
				AMP8	AMP8(Blue)	AMP7
Hall	AMP3	5V Interlock	24V Interlock
				AMP3(Blue)	HVPS
IC						Thermostat	Heater
Toner Sensor						SMPS

		Thermostat
	Power SW
Regist Sensor	PTOP Sensor	AC
	AC inlet	AC cord set

MB1500UCB-KX

KX-MB1500UCB

6.3.Main Board Section

6.3.1.Data Flow

[PC Scan]

CIS unit

1. An analog image data is output from CIS unit to IC503.

IC503 decode the analog data to digital data, and output to IC300. Scanner I/F in IC300 process image data and store it in IC400 through SDRAM I/F.

2.If necessary, the data is compressed via DSP.

3.The data is output to PC through the USB I/F.

Main Board			CN510
			AFE	IC503
				IC300	LSU
		CPU	Scanner	Print I/F	CN500
			I/F
					IC400
PC				SDRAM	SDRAM
				I/F
	USB		JBIG	DSP
	I/F
CN300
USB
[PC print]

1. The print data is output from PC through USB and pass the USB I/F in IC300.

then the data is stored in IC400 through SDRAM I/F.

2. Print I/F retrieve the data from IC400 and output it to LSU.

CIS unit

Main Board			CN510
			AFE	IC503
				IC300	LSU
		CPU	Scanner	Print I/F	CN500
			I/F
					IC400
PC				SDRAM	SDRAM
				I/F
	USB		JBIG	DSP
	I/F
CN300
USB
			16

KX-MB1500UCB

[Copy]

1. An analog image data is output from CIS unit to IC503.

IC503 decode the analog data to digital data, and output to IC300. Scanner I/F in IC300 process image data and store it in IC400 through SDRAM I/F.

2. If necessary, the data is compressed via JBIG.

3. Print I/F retrieve the data from IC400 and output it to LSU.

CIS unit

Main Board		CN510
		AFE	IC503
			IC300	LSU
	CPU	Scanner	Print I/F	CN500
		I/F
				IC400
PC			SDRAM	SDRAM
			I/F
	USB	JBIG	DSP
	I/F
CN300
USB

17

KX-MB1500UCB

Description of Pin Distribution (IC300) SOC (System On Chip)

PIN NO.	PinName	I/O	POWER SUPPLY VOLTAGE	EXPLANATION
A02	LEDONB	O	3.3V	SCANNER INTERFACE
A03	NCCDON	O	3.3V	SCANNER INTERFACE
A04	AFEMCLK	O	3.3V	SCANNER INTERFACE
A05	NCCDCP	O	3.3V	NOT USED
A06	CCDCLK	O	3.3V	NOT USED
A07	PIO29	O	3.3V	OPERATION PANEL INTERFACE
A08	PIO57	O	3.3V	CARRIAGE MOTOR INTERFACE
A09	PIO53	O	3.3V	CARRIAGE MOTOR INTERFACE
A10	PIO50	O	3.3V	CARRIAGE MOTOR INTERFACE
A11	PIO46	O	3.3V	FAN1 CONTROL
A12	PIO42	O	3.3V	DC MOTOR INTERFACE
A13	NFRCE	O	3.3V	FLASH MEMORY CHIP SELECT
A14	FRMD0	I/O	3.3V	FLASH MEMORY DATA BUS 0
A15	FRMD3	I/O	3.3V	FLASH MEMORY DATA BUS 3
A16	FRMD7	I/O	3.3V	FLASH MEMORY DATA BUS 7
A17	FRMA3	O	3.3V	FLASH MEMORY ADDRESS BUS 3
A18	FRMA6	O	3.3V	FLASH MEMORY ADDRESS BUS 6
A19	FRMA10	O	3.3V	FLASH MEMORY ADDRESS BUS 10
A20	THRMAVDD	-	3.3V	POWER SUPPLY
A21	FRMA11	O	3.3V	FLASH MEMORY ADDRESS BUS 11
A22	FRMA15	O	3.3V	FLASH MEMORY ADDRESS BUS 15
A23	FRMA17	O	3.3V	FLASH MEMORY ADDRESS BUS 17
A24	FRMA20	O	3.3V	FLASH MEMORY ADDRESS BUS 20
A25	FRMA22	O	3.3V	FLASH MEMORY ADDRESS BUS 22
AA01	SDMD8	I/O	3.3V	SDRAM DATA BUS 8
AA02	SDMD9	I/O	3.3V	SDRAM DATA BUS 9
AA03	SDMA7	O	3.3V	SDRAM ADDRESS BUS 7
AA04	SDMA6	O	3.3V	SDRAM ADDRESS BUS 6
AA23	VDD1.2	-	1.2V	POWER SUPPLY
AA24	AFERST	O	3.3V	NCU INTERFACE
AA25	RING	I	3.3V	NCU INTERFACE
AA26	EXTINT	I	3.3V	NCU INTERFACE
AB01	SDMD10	I/O	3.3V	SDRAM DATA BUS 10
AB02	SDMD11	I/O	3.3V	SDRAM DATA BUS 11
AB03	SDMA5	O	3.3V	SDRAM ADDRESS BUS 5
AB04	VDD1.2	-	1.2V	POWER SUPPLY
AB23	VSS	-	GND	GND
AB24	BTXD	O	3.3V	NCU INTERFACE
AB25	BRXD	I	3.3V	NCU INTERFACE
AB26	AFECLK	O	3.3V	NCU INTERFACE
AC01	SDMD12	I/O	3.3V	SDRAM DATA BUS 12
AC02	SDMD13	I/O	3.3V	SDRAM DATA BUS 13
AC03	SDMA4	O	3.3V	SDRAM ADDRESS BUS 4
AC04	VSS	-	GND	GND
AC05	VSS	-	GND	GND
AC06	VDD1.2	-	1.2V	POWER SUPPLY
AC07	TXD0	O	3.3V	ETHERNET INTERFACE
AC08	TX_ER	O	3.3V	ETHERNET INTERFACE
AC09	RXD1	I	3.3V	ETHERNET INTERFACE
AC10	VDD3.3	-	3.3V	POWER SUPPLY
AC11	TEST	I	3.3V	NOT USED
AC12	USBREXT	I	3.3V	USB INTERFACE
AC13	VDD1.2	-	1.2V	POWER SUPPLY
AC14	VDD3.3	-	3.3V	POWER SUPPLY
AC15	USBXIN	I	3.3V	CRYSTAL(12MHz) INPUT
AC16	LSI_SCAN_ENABLE	I	3.3V	NOT USED
AC17	VDD1.2	-	1.2V	POWER SUPPLY
AC18	NWDTRST	O	3.3V	WATCH DOG TIMER RESET OUTPUT
AC19	LSI_TN	I	3.3V	NOT USED
AC20	PSCIO2	I	3.3V	INPUT PORT (FANDET1)
AC21	PSCIO6	O	3.3V	NOT USED
AC22	VDD1.2	-	1.2V	POWER SUPPLY
AC23	VSS	-	GND	GND
AC24	ATXD	O	3.3V	NCU INTERFACE
AC25	BBITCLK	I/O	3.3V	NCU INTERFACE

18

KX-MB1500UCB

PIN NO.	PinName	I/O	POWER SUPPLY VOLTAGE	EXPLANATION
AC26	BSPCLK	I/O	3.3V	NCU INTERFACE
AD01	SDMD14	I/O	3.3V	SDRAM DATA BUS 14
AD02	SDMD15	I/O	3.3V	SDRAM DATA BUS 15
AD03	VSS	-	GND	GND
AD04	NBATRST	I	3.3V	BATTERY RESET INPUT
AD05	VDD2RTC	-	1.2V	POWER SUPPLY
AD06	CRS	I	3.3V	ETHERNET INTERFACE
AD07	TXD1	O	3.3V	ETHERNET INTERFACE
AD08	RX_DV	I	3.3V	ETHERNET INTERFACE
AD09	RXD2	I	3.3V	ETHERNET INTERFACE
AD10	RX_ER	I	3.3V	ETHERNET INTERFACE
AD11	CLKSEL	I	3.3V	NOT USED
AD12	USBVSSA33_BIAS	-	GND	GND
AD13	USBVSSA33	-	GND	GND
AD14	USBVDDA12_SQ	-	1.2V	POWER SUPPLY
AD15	USBVSSA12	-	GND	GND
AD16	LSI_TRSTN	I	3.3V	NOT USED
AD17	LSI_TDO	O	3.3V	NOT USED
AD18	NRST	I	3.3V	SYSTEM RESET INPUT
AD19	HTRCTL	O	3.3V	HEATER CONTROL
AD20	PSCIO3	I	3.3V	INPUT PORT (POUT)
AD21	PSCIO7	O	3.3V	NOT USED
AD22	PSCIO15	I	3.3V	INPUT PORT (RPS)
AD23	NC	-	-	NOT USED
AD24	VSS	-	GND	GND
AD25	ASPCLK	I/O	3.3V	NCU INTERFACE
AD26	ARXD	I	3.3V	NCU INTERFACE
AE01	SDLDM1	O	3.3V	SDRAM DQML1
AE02	VSS	-	GND	GND
AE03	SYSPLLVSS1	-	GND	GND
AE04	RTCCLKOUT	O	3.3V	CRYSTAL(32.768KHz) OUTPUT
AE05	RTCPWRDWN	I	3.3V	RTC POWER DOWN
AE06	TX_CLKI	I	3.3V	ETHERNET INTERFACE
AE07	TXD2	O	3.3V	ETHERNET INTERFACE
AE08	RX_CLKI	I	3.3V	ETHERNET INTERFACE
AE09	RXD3	I	3.3V	ETHERNET INTERFACE
AE10	MDC	O	3.3V	ETHERNET INTERFACE
AE11	NC	-	-	NOT USED
AE12	USBID	O	3.3V	NOT USED
AE13	USBDM	I/O	3.3V	USB INTERFACE
AE14	USBVSSA12_SQ	-	GND	GND
AE15	USBVDDA12PLL	-	1.2V	POWER SUPPLY
AE16	USBVDDA12	-	1.2V	POWER SUPPLY
AE17	LSI_TDI	I	3.3V	NOT USED
AE18	LSI_PROCMON	O	3.3V	NOT USED
AE19	LSI_IDDT	I	3.3V	NOT USED
AE20	PSCIO1	I	3.3V	INPUT PORT (PICK)
AE21	PSCIO5	O	3.3V	NOT USED
AE22	PSCIO13	I	3.3V	INPUT PORT (TNR)
AE23	MDMCLKOUT	O	3.3V	CRYSTAL(24.576MHz) OUTPUT
AE24	MDMPLLVDD	-	3.3V	POWER SUPPLY
AE25	VSS	-	GND	GND
AE26	ABITCLK	I/O	3.3V	NCU INTERFACE
AF02	SYSPLLVDD1	-	3.3V	POWER SUPPLY
AF03	VDD3.3OSC	-	3.3V	POWER SUPPLY
AF04	RTCCLKIN	I	3.3V	CRYSTAL(32.768KHz) INPUT
AF05	COL	I	3.3V	ETHERNET INTERFACE
AF06	TX_EN	O	3.3V	ETHERNET INTERFACE
AF07	TXD3	O	3.3V	ETHERNET INTERFACE
AF08	RXD0	I	3.3V	ETHERNET INTERFACE
AF09	MDIO	I/O	3.3V	ETHERNET INTERFACE
AF10	MGTINT	I	3.3V	ETHERNET INTERFACE
AF11	USBVBUS	O	3.3V	USB INTERFACE
AF12	USBVDDA33_BIAS	-	3.3V	POWER SUPPLY
AF13	USBDP	I/O	3.3V	USB INTERFACE
AF14	USBVDDA33	-	3.3V	POWER SUPPLY
AF15	USBVSSA12PLL	-	GND	GND

19

KX-MB1500UCB

PIN NO.	PinName	I/O	POWER SUPPLY VOLTAGE	EXPLANATION
AF16	USBXOUT	I	3.3V	CRYSTAL(12MHz) OUTPUT
AF17	LSI_TMS	I	3.3V	NOT USED
AF18	LSI_TCK	I	3.3V	NOT USED
AF19	LSI_CW_TAP	I	3.3V	NOT USED
AF20	PSCIO0	I	3.3V	INPUT PORT (REGIST)
AF21	PSCIO4	O	3.3V	NOT USED
AF22	PSCIO12	I	3.3V	INPUT PORT (POUT)
AF23	PSCIO14	I	3.3V	INPUT PORT (DOCU)
AF24	MDMCLKIN	I	3.3V	CRYSTAL(24.576MHz) INPUT
AF25	MDMPLLVSS	-	GND	GND
B01	AFEADC0	I	3.3V	NOT USED
B02	VSS	-	GND	GND
B03	LEDONG	O	3.3V	SCANNER INTERFACE
B04	AFERSMP	O	3.3V	NOT USED
B05	AFEVSMP	O	3.3V	SCANNER INTERFACE
B06	NCCDRS	O	3.3V	SCANNER INTERFACE
B07	PIO30	I/O	3.3V	OPERATION PANEL INTERFACE
B08	MMPWR	O	3.3V	NOT USED
B09	PIO54	O	3.3V	CARRIAGE MOTOR INTERFACE
B10	PIO51	O	3.3V	CARRIAGE MOTOR INTERFACE
B11	PIO47	O	3.3V	NOT USED
B12	PIO43	O	3.3V	DC MOTOR INTERFACE
B13	NFROE	O	3.3V	FLASH MEMORY CHIP OUTPUT ENABLE
B14	FRMD1	I/O	3.3V	FLASH MEMORY DATA BUS 1
B15	FRMD4	I/O	3.3V	FLASH MEMORY DATA BUS 4
B16	FRMA0	O	3.3V	FLASH MEMORY ADDRESS BUS 0
B17	FRMA4	O	3.3V	FLASH MEMORY ADDRESS BUS 4
B18	FRMA7	O	3.3V	FLASH MEMORY ADDRESS BUS 7
B19	THRMAVSS	-	GND	GND
B20	TONE	O	3.3V	ANALOG(TONE) OUTPUT
B21	FRMA12	O	3.3V	FLASH MEMORY ADDRESS BUS 12
B22	FRMA16	O	3.3V	FLASH MEMORY ADDRESS BUS 16
B23	FRMA19	O	3.3V	FLASH MEMORY ADDRESS BUS 19
B24	FRMA21	O	3.3V	FLASH MEMORY ADDRESS BUS 21
B25	VSS	-	GND	GND
B26	DOTPLLVSS	-	GND	GND
C01	AFEADC3	I	3.3V	NOT USED
C02	AFEADC1	I	3.3V	NOT USED
C03	VSS	-	GND	GND
C04	LEDONR	O	3.3V	SCANNER INTERFACE
C05	OEB	O	3.3V	NOT USED
C06	CCDSH	O	3.3V	SCANNER INTERFACE
C07	PIO31	O	3.3V	OPERATION PANEL INTERFACE
C08	OPMPWR	O	3.3V	NOT USED
C09	PIO55	O	3.3V	CARRIAGE MOTOR INTERFACE
C10	PIO52	O	3.3V	CARRIAGE MOTOR INTERFACE
C11	PIO49	O	3.3V	OUTPUT PORT(HSSPMUTE)
C12	PIO45	O	3.3V	DC MOTOR INTERFACE
C13	NFRWE	O	3.3V	FLASH MEMORY CHIP WRITE ENABLE
C14	FRMD2	I/O	3.3V	FLASH MEMORY DATA BUS 2
C15	FRMD6	I/O	3.3V	FLASH MEMORY DATA BUS 6
C16	FRMA2	O	3.3V	FLASH MEMORY ADDRESS BUS 2
C17	FRMA5	O	3.3V	FLASH MEMORY ADDRESS BUS 5
C18	FRMA9	O	3.3V	FLASH MEMORY ADDRESS BUS 9
C19	THRMSTR0	I	3.3V	ANALOG INPUT(THERMISTOR)
C20	TONEAVDD	-	3.3V	POWER SUPPLY
C21	FRMA14	O	3.3V	FLASH MEMORY ADDRESS BUS 14
C22	FRMA18	O	3.3V	FLASH MEMORY ADDRESS BUS 18
C23	FRMA23	O	3.3V	FLASH MEMORY ADDRESS BUS 23
C24	VSS	-	GND	GND
C25	DOTPLLVDD	-	3.3V	POWER SUPPLY
C26	DOTCLKIN	I	3.3V	CRYSTAL(20MHz) INPUT
D01	AFEADC5	I	3.3V	SCANNER INTERFACE
D02	AFEADC4	I	3.3V	SCANNER INTERFACE
D03	AFEADC2	I	3.3V	NOT USED
D04	VSS	-	GND	GND
D05	VSS	-	GND	GND

20

KX-MB1500UCB

PIN NO.	PinName	I/O	POWER SUPPLY VOLTAGE	EXPLANATION
D06	VDD1.2	-	1.2V	POWER SUPPLY
D07	PIO32	O	3.3V	OPERATION PANEL INTERFACE
D08	CRMPWR	O	3.3V	MOTOR CURRENT CONTROL
D09	PIO56	O	3.3V	NOT USED
D10	VDD1.2	-	1.2V	POWER SUPPLY
D11	PIO48	O	3.3V	NOT USED
D12	PIO44	O	3.3V	DC MOTOR INTERFACE
D13	VDD3.3	-	3.3V	POWER SUPPLY
D14	VDD1.2	-	1.2V	POWER SUPPLY
D15	FRMD5	I/O	3.3V	FLASH MEMORY DATA BUS 5
D16	FRMA1	O	3.3V	FLASH MEMORY ADDRESS BUS 1
D17	VDD3.3	-	3.3V	POWER SUPPLY
D18	FRMA8	O	3.3V	FLASH MEMORY ADDRESS BUS 8
D19	THRMSTR1	I	3.3V	ANALOG INPUT(THERMISTOR)
D20	TONEAVSS	-	GND	GND
D21	FRMA13	O	3.3V	FLASH MEMORY ADDRESS BUS 13
D22	VDD1.2	-	1.2V	POWER SUPPLY
D23	VSS	-	GND	GND
D24	NC	-	-	NOT USED
D25	DOTCLKOUT	O	3.3V	CRYSTAL(20MHz) OUTPUT
D26	PIO66	O	3.3V	NOT USED
E01	SDUDM0	O	3.3V	SDRAM DQMU0
E02	AFEADC7	I	3.3V	SCANNER INTERFACE
E03	AFEADC6	I	3.3V	SCANNER INTERFACE
E04	VSS	-	GND	GND
E23	VDD1.2	-	1.2V	POWER SUPPLY
E24	FRMA24	O	3.3V	FLASH MEMORY ADDRESS BUS 24
E25	PIO65	O	3.3V	NOT USED
E26	PIO64	O	3.3V	NOT USED
F01	SDMD16	I/O	3.3V	SDRAM DATA BUS 16
F02	SDMD17	I/O	3.3V	SDRAM DATA BUS 17
F03	AFESIFCLK	O	3.3V	SCANNER INTERFACE
F04	VDD1.2	-	1.2V	POWER SUPPLY
F23	PIO24	I	3.3V	LSU INTERFACE
F24	PIO61	O	3.3V	OUTPUT PORT(SPMUTE)
F25	PIO60	O	3.3V	NOT USED
F26	PIO3	O	3.3V	LSU INTERFACE
G01	SDMD18	I/O	3.3V	SDRAM DATA BUS 18
G02	SDMD19	I/O	3.3V	SDRAM DATA BUS 19
G03	AFESIFDIN	I	3.3V	SCANNER INTERFACE
G04	AFESIFEN	O	3.3V	SCANNER INTERFACE
G23	PSCIO24	I	3.3V	LSU INTERFACE
G24	PIO2	O	3.3V	LSU INTERFACE
G26	PIO58	O	3.3V	OUTPUT PORT(CIDRLY)
H01	SDMD20	I/O	3.3V	SDRAM DATA BUS 20
H02	SDMD21	I/O	3.3V	SDRAM DATA BUS 21
H03	NSDCS2	O	3.3V	SDRAM CHIP SELECT 2
H04	AFESIFDOUT	O	3.3V	SCANNER INTERFACE
H23	PIO63	O	3.3V	LSU INTERFACE
H24	PIO62	O	3.3V	LSU INTERFACE
H25	PIO28	O	3.3V	NOT USED
H26	PIO21	O	3.3V	LSU INTERFACE
J01	SDMD22	I/O	3.3V	SDRAM DATA BUS 22
J02	SDMD23	I/O	3.3V	SDRAM DATA BUS 23
J03	SDMA3	O	3.3V	SDRAM ADDRESS BUS 3
J04	SDMA2	O	3.3V	SDRAM ADDRESS BUS 2
J23	PIO6	O	3.3V	HIGH VOLTAGE UNIT INTERFACE
J24	PIO27	O	3.3V	NOT USED
J25	PIO5	O	3.3V	HIGH VOLTAGE UNIT INTERFACE
J26	PIO4	O	3.3V	HIGH VOLTAGE UNIT INTERFACE
K01	VSS	-	GND	GND
K02	SDCLK2	O	3.3V	SDRAM CLOCK 2
K03	VSS	-	GND	GND
K04	VDD3.3	-	3.3V	POWER SUPPLY
K23	VDD1.2	-	1.2V	POWER SUPPLY
K24	PIO41	O	3.3V	NOT USED
K25	PIO40	O	3.3V	NOT USED

21

KX-MB1500UCB

PIN NO.	PinName	I/O	POWER SUPPLY VOLTAGE	EXPLANATION
K26	PIO39	O	3.3V	NOT USED
L01	SDMD24	I/O	3.3V	SDRAM DATA BUS 24
L02	SDMD25	I/O	3.3V	SDRAM DATA BUS 25
L03	SDMA1	O	3.3V	SDRAM ADDRESS BUS 1
L04	SDMAÇO	O	3.3V	SDRAM ADDRESS BUS 0
L11	VSS	-	GND	GND
L12	VSS	-	GND	GND
L13	VSS	-	GND	GND
L14	VSS	-	GND	GND
L15	VSS	-	GND	GND
L16	VSS	-	GND	GND
L23	PIO37	I	3.3V	INPUT PORT (RING)
L24	PIO38	O	3.3V	NOT USED
L25	PIO36	O	3.3V	NOT USED
L26	PIO35	O	3.3V	NOT USED
M01	SDMD26	I/O	3.3V	SDRAM DATA BUS 26
M02	SDMD27	I/O	3.3V	SDRAM DATA BUS 27
M03	SDMA10	O	3.3V	SDRAM ADDRESS BUS 10
M04	SDBA1	O	3.3V	SDRAM BANK ADDRESS 1
M11	VSS	-	GND	GND
M12	VSS	-	GND	GND
M13	VSS	-	GND	GND
M14	VSS	-	GND	GND
M15	VSS	-	GND	GND
M16	VSS	-	GND	GND
M23	PIO33	O	3.3V	NOT USED
M24	PIO34	O	3.3V	NOT USED
M25	PIO26	O	3.3V	NOT USED
M26	PIO25	O	3.3V	OUTPUT PORT(CNGMUTE)
N01	SDMD28	I/O	3.3V	SDRAM DATA BUS 28
N02	SDMD29	I/O	3.3V	SDRAM DATA BUS 29
N03	SDBA0	O	3.3V	SDRAM BANK ADDRESS 0
N04	VDD1.2	-	1.2V	POWER SUPPLY
N11	VSS	-	GND	GND
N12	VSS	-	GND	GND
N13	VSS	-	GND	GND
N14	VSS	-	GND	GND
N15	VSS	-	GND	GND
N16	VSS	-	GND	GND
N23	VDD3.3	-	3.3V	POWER SUPPLY
N24	PIO23	O	3.3V	NOT USED
N25	PIO22	O	3.3V	NOT USED
N26	PIO20	O	3.3V	NOT USED
P01	SDMD30	I/O	3.3V	SDRAM DATA BUS 30
P02	SDMD31	I/O	3.3V	SDRAM DATA BUS 31
P03	NSDCS	O	3.3V	SDRAM CHIP SELECT 1
P04	VDD3.3	-	3.3V	POWER SUPPLY
P11	VSS	-	GND	GND
P12	VSS	-	GND	GND
P13	VSS	-	GND	GND
P14	VSS	-	GND	GND
P15	VSS	-	GND	GND
P16	VSS	-	GND	GND
P23	VDD1.2	-	1.2V	POWER SUPPLY
P24	PIO16	I	3.3V	INPUT PORT
P25	PIO17	I	3.3V	INPUT PORT
P26	PIO18	I	3.3V	HIGH VOLTAGE UNIT INTERFACE
R01	SDUDM1	O	3.3V	SDRAM DQMU1
R02	SDLDM0	O	3.3V	SDRAM DQML0
R03	BZVDD33	-	3.3V	POWER SUPPLY
R04	BZRST33	-	3.3V	POWER SUPPLY
R11	VSS	-	GND	GND
R12	VSS	-	GND	GND
R13	VSS	-	GND	GND
R14	VSS	-	GND	GND
R15	VSS	-	GND	GND
R16	VSS	-	GND	GND

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KX-MB1500UCB

PIN NO.	PinName	I/O	POWER SUPPLY VOLTAGE	EXPLANATION
R23	PIO13	O	3.3V	NOT USED
R24	PIO12	O	3.3V	NOT USED
R25	PIO14	O	3.3V	NOT USED
R26	PIO15	I	3.3V	INPUT PORT
T01	SDMD0	I/O	3.3V	SDRAM DATA BUS 0
T02	SDMD1	I/O	3.3V	SDRAM DATA BUS 1
T03	NSDCAS	O	3.3V	SDRAM CAS
T04	NSDRAS	O	3.3V	SDRAM RAS
T11	VSS	-	GND	GND
T12	VSS	-	GND	GND
T13	VSS	-	GND	GND
T14	VSS	-	GND	GND
T15	VSS	-	GND	GND
T16	VSS	-	GND	GND
T23	PIO9	O	3.3V	OUTPUT PORT(SNPICK)
T24	PIO8	O	3.3V	NOT USED
T25	PIO10	O	3.3V	NOT USED
T26	PIO11	O	3.3V	OUTPUT PORT(SNREG)
U01	SDMD2	I/O	3.3V	SDRAM DATA BUS 2
U02	SDMD3	I/O	3.3V	SDRAM DATA BUS 3
U03	NSDWE	O	3.3V	SDRAM WRITE ENABLE
U04	VDD1.2	-	1.2V	POWER SUPPLY
U23	VDD3.3	-	3.3V	POWER SUPPLY
U24	PIO0	I	3.3V	INPUT PORT (HOOK)
U25	PIO1	O	3.3V	OUTPUT PORT(EXTRLY)
U26	PIO7	O	3.3V	NOT USED
V01	SDMD4	I/O	3.3V	SDRAM DATA BUS 4
V02	SDMD5	I/O	3.3V	SDRAM DATA BUS 5
V03	SDCKE	O	3.3V	SDRAM CLOCK ENABLE
V04	SDMA12	O	3.3V	SDRAM ADDRESS BUS 12
V23	PSCIO20	I	3.3V	INPUT PORT (CIS HOME)
V24	PSCIO21	O	3.3V	NOT USED
V25	PSCIO22	O	3.3V	NOT USED
V26	PSCIO23	O	3.3V	NOT USED
W01	SDMD6	I/O	3.3V	SDRAM DATA BUS 6
W02	SDMD7	I/O	3.3V	SDRAM DATA BUS 7
W03	SDMA11	O	3.3V	SDRAM ADDRESS BUS 11
W04	SDMA9	O	3.3V	SDRAM ADDRESS BUS 9
W23	PSCIO16	O	3.3V	NOT USED
W24	PSCIO17	I	3.3V	INPUT PORT (FANDET2)
W25	PSCIO18	I	3.3V	INPUT PORT (TOPCVR)
W26	PSCIO19	I	3.3V	INPUT PORT (PSTART)
Y01	VSS	-	GND	GND
Y02	SDCLK	O	3.3V	SDRAM CLOCK 1
Y03	SDMA8	O	3.3V	SDRAM ADDRESS BUS 8
Y04	VSS	-	GND	GND
Y23	AFESEL0	I	3.3V	NCU INTERFACE
Y24	AFESEL1	I	3.3V	NCU INTERFACE
Y25	EXMDMCS	O	3.3V	NOT USED
Y26	DP	O	3.3V	NCU INTERFACE

23

KX-MB1500UCB

6.4.CIS Control Section

The scanning block of this device consists of a control circuit and a CIS (contact image sensor), and AFE(Analog Front End) include A/D Converter.

When an original document is inserted and the start button pressed, pin A3 of IC300 goes to a low level and the transistor Q518 turns on.

This applies voltage to the CIS. The CIS is driven by each of the signals (CCDSH, CCDCLK, Resolution) output from IC300. The original image illuminated by the LED to output an analog image signal.

The analog image signal is input to the AFE on VINP(20pin of IC503) and converted into 16-bit data by the A/D converter inside IC503. Then this signal undergoes digital processing in order to obtain a high-quality image.

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KX-MB1500UCB

Resolution

The CIS can change the resolution, 300 dpi mode or 600 dpi mode. If RESOLUTION signal is High level, CIS operates 600 dpi mode.

The other case is 300 dpi mode.

Operation	CIS Resolution
	300dpi	600dpi
COPY	Photo/Text, Text	Photo
PC SCAN	~300 X 300	400 X 400~

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KX-MB1500UCB

6.5.Motor Drive Section

6.5.1.Engine Motor Control Circuit

1. Functions

All driving forces of printer engine part are supplied by tis engine motor.

Engine motor is controlled so as to rotate at constant speed during printing and copying.

2.Block Diagram of Main motor Drive circuit

Main motor drive circuit consists of motor driver IC and Current control circuit. In order to start the motor rotation, following 3 signals are supplied from IC300.

3.Explanation of each circuit

1.Motor driver

IC600 is the constant current, Bi-polar stepping motor drive IC.

This IC can drive up to 2A/phase and support up to 2W1-2 phase excitation.

When "enable" signal (IC600_pin2) becomes "L", motor driver is activated, and motor current are supplied from IC600_pin1, pin18, pin21 and pin22 to drive the motor coil.

Excitation type is selected by the logic level of "MS1"(IC600_pin8) and S2"(IC600_pin9).

The operation of IC600 is shown in below table corresponding to each logic level of enable, MS1, and MS2.

Enable	MS1	MS2	Excitation type	Motor Operation
(IC600_pin2)	(IC600_pin8)	(IC600_pin9)
H	-	-	Disable	Motor stop
L	L	L	2 Phase Excitation	Full speed operation
L	H	L	F1-2 Excitation	Half speed operation
L	L	H	W1-2 Excitation	Not used
L	H	H	2W1-2 Excitation	Not used

After setting the above signals, clock signal is supplied from IC300_pinA12 to IC600_pin14.

Whenever clock signal is supplied, current value and direction supplied to Main motor change according to the excitation type which is determined by above signal levels.

The clock frequency also determines the motor speed.

2.Motor current control circuit

According to the rotation speed, motor current is controlled for appropriate value. In order to control the motor current, Ref voltage of IC600 is controlled.

When Ref voltage is high, motor current is increased, and the voltage is low, motor current is decreased.

For the control of Ref voltage, PWM pulse is supplied from IC300_pinB8. PWM pulse is integrated by R615 and C610.

Consequently PWM pulse is converted to DC voltage.

When duty of PWM pulse is high, Ref voltage is increased and when duty is low, Ref voltage is decreased.

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KX-MB1500UCB

4. Explanation of each circuit

5.Timing chart and wave form of Main motors

1.2-2 phase excitation (Full speed)

(1) Timing chart

(2) Wave form

27

KX-MB1500UCB

2. Flat torque 1-2 phase excitation (Half speed)

(1) Timing chart

(2) Wave form

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KX-MB1500UCB

6.5.2.FB (Flat bed) motor drive circuit

1.General

FB motor drive circuit consists of "Motor driver", "Motor current control circuit" and "O.C.P(Over Current Protection) circuit" FB motor feeds CIS unit in FB scan, FB copy.

A one step rotation of this motor feeds CIS unit 0.021mm.

2.Block Diagram of Scanner motor Drive circuit

6.5.2.1.Motor driver

Motor driver IC502 can drive motors up to 0.8A/phase and support up to W1-2 phase excitation. When "Power save" signal (IC502_pin20) becomes "H", motor driver is activated.

Stepping pulses are output from IC300 pins A9, B9, C9, A10, B10, and C10.

Frequency and pattern of these pulses determine the motor rotation speed and excitation mode respectively. Corresponding to these pulses, current are supplied from IC502_pin4, pin6, pin7 and pin9 to each motor coil.

6.5.2.2.Motor current control circuit

1.Function

According to the scan speed, motor current is controlled for appropriate value. For example, when scan speed is low, motor has enough driving force.

So to prevent the vibration and noise during motor rotation, motor drive current should be reduced. When scan speed is high, motor needs much driving force. so much current should be supplied. In order to control the motor current, Vref voltage of IC502 is controlled.

When Vref voltage is high, motor current is increased, and the voltage is low, motor current is reduced.

2.Circuit Diagram

Please refer to the circuit diagram shown in the block diagram of FB (Flat bed) motor drive circuit (P.29).

3.Circuit explanation

For the sake of Vref voltage control, PWM pulse is supplied from IC300_pinD8. PWM pulse is integrated by R538, R539 and C764, then converted to DC voltage. This DC voltage is supplied to Vref pin of IC502.

When duty of PWM pulse is high, Vref voltage is increased and when duty is low, Vref voltage is decreased.

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KX-MB1500UCB

4.Timing chart of current control

Following timing charts are the example of Vref voltage corresponding to PWM pulse duty.

6.5.2.3.O.C.P (Over Current Protection) circuit

1.Function

If motor driver can supply more than 15 watts, FB motors may become fire hazards. To prevent the risk of fire, this circuit is provided.

2.Circuit Diagram

3.Circuit explanation

When the current supplied from 24V exceeds 0.44A, the voltage between two registers R575 and R578 becomes more than 0.6V (=0.44A*2.7ohm/2), consequently both Q515 and Q522 turn on.

If Q522 turns on, IC502_pin20 becomes "Low" level.

As a result IC502 is deactivated and motor currents are cut off.

So the current which IC502 can supply is limited to less than 0.44A and the wattage is also limited to less than 10.7W (=0.44A*24V).

By limiting the wattage less than 15W, risk of fire hazard is eliminated.

30