OKI 8c Troubleshooting Manual

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Page 1

OKIP AGE 8c Color LED Page Printer

T roubleshooting Manual with Component Parts List

ODA/OEL/INT

1999. 2. 9 Rev.1

40985501TH Rev.1 1 / 157

Page 2

CONTENTS

1. OUTLINE ............................................................................................................ 3

2. TOOLS................................................................................................................ 3

3. CIRCUIT DESCRIPTION.................................................................................... 4

3.1 CU (controller unit : PCR)......................................................................... 4

3.1.1 Outline ...................................................................................................................... 4

3.1.2 CPU and Memory ..................................................................................................... 7

3.1.3 Reset Control............................................................................................................ 9

3.1.4 EEPROM Control ................................................................................................... 10

3.1.5 Centronics Parallel Interface................................................................................... 12

3.1.6 Operator Panel Control........................................................................................... 13

3.2 PU (Printer Unit : PX4) ........................................................................... 14

3.2.1 Outline ....................................................................................................................14

3.2.2 CPU, Memory and LSI............................................................................................ 16

3.2.3 Reset Control.......................................................................................................... 18

3.2.4 EEPROM Control ................................................................................................... 19

3.2.5 LED Head Control .................................................................................................. 21

3.2.6 Motor Control.......................................................................................................... 24

3.2.7 Fuser Temperature Control..................................................................................... 30

3.2.8 Fan Motor Control................................................................................................... 33

3.2.9 Sensor Supervision ................................................................................................ 34

3.2.10 Cover Open ............................................................................................................ 35

3.2.11 Power Supply Interface........................................................................................... 36

3.2.12 Option (2nd paper feeder) Interface ....................................................................... 37

3.2.13 Power Supply Board ............................................................................................... 38

3.3 PCR-PX4 I/F........................................................................................... 42

3.3.1 Outline ....................................................................................................................42

3.3.2 Video I/F ................................................................................................................. 43

3.3.3 Command Interface ................................................................................................ 45

4. TROUBLESHOOTING...................................................................................... 48

4.1 Troubleshooting Table............................................................................ 48

4.2 Troubleshooting Flowchart ..................................................................... 60

5. CIRCUIT DIAGRAM ......................................................................................... 66

6. COMPONENT PARTS LIST........................................................................... 104

40985501TH Rev.1 2 /

Page 3

1. OUTLINE

This manual has been written to provide guidance for troubleshooting of the OKIPAGE 8c Printer (primarily for its printed circuit boards), on an assumption that the reader is knowledgeable of the printer. Read the maintenance manual for this printer P/N 40029803TH if necessary.

Notes:

1. The power supply board containing a high voltage power supply is dangerous. From the viewpoint of the safety standards, the local repairing of a defective board is not allowed. Also, pay attention to the fact that a function can be rarely recovered by replacing a fuse when it is burnt.

2. Replacement of CPU(NR4700) and LSIs (IMEM & IIF) on the PCR PCB is not recommended. If these chips are founded to be defective, board replacement is suggested.

2. TOOLS

For troubleshooting the printer, the tools listed below may be needed in addition to general maintenance tools.

Tool Remarks Oscilloscope Soldering iron

Extension Cord Used for drawing PCR PCB out for PX4

Frequency response 100 MHz or higher A slender tip type, 15-20 Watt

PCB evaluation

40985501TH Rev.1 3 /

Page 4

3. CIRCUIT DESCRIPTION

3.1 CU (controller unit : PCR)

3.1.1 Outline

The PCR PCB controls the reception of data transferred through a host I/F and processes command analysis, bit image development, raster buffer read. It also controls the operator panel. The block diagram of the entire OKIPAGE 8c including PCR PCB and details of PCR PCB are shown in Figure. 3-1 and 3-2.

(1) Reception control

The OKIPAGE 8c has one centronics parallel I/F. The centronics parallel I/F port can specify the following item when set by the control panel:

PARALLEL SPEED: HIGH/MEDIUM BI-DIRECTION : ENABLE/DISABLE I-PRIME : OFF/ON

An interface task stores all data received from the host into a receive buffer first.

(2) Command analysis processing

The OKIPAGE 8c has the following emulation mode. Color Laser Jet : Hewlett Packard

PostScript Level 3 : Adobe An edit task fetches data from the receive buffer, analizes commands, and reconstructs the

data in such a way that print data are aligned from up to down and from right to left; then it writes the resultant data into a page buffer with such control data as print position coordinate, font type, etc. added.

(3) Font Processing

When one page editing is finished, a developing task makes an engine start and fetches data from the page buffer synchronizing with a printing operation; then it developes the fetched data to a bit map as referring to data from a character generator, and writes the resultant data into the raster buffer (of band buffer structure).

(4) Raster buffer read.

As controlling the engine operation, an engine task sends data from the raster buffer to the LED head.

40985501TH Rev.1 4 /

Page 5

AC-IN AC switch

Crimp-style terminal

PXL board

PXL

Ejection sensor

LED head: Y M C K

Discharging lamp: Y M C K

Heat roller

thermistor

Backup roller

thermistor

Heater unit

SUMi card x 4

PD6 board

Y600 14P

YPOW 12P

M600 14P

MPOW 12P

C600 14P

CPOW 12P

K600 14P

KPOW 12P

HEAD1 13P HEAD2 14P HEADPOW 12P HEAD3 15P

FF form

sensor

Toner sensor x 4

ID sensor x 4

Low-voltage power supply

6P'

JST3P

FAN 1

FAN 2

Oil PAD MSW

motor

Paper supply sensor board

FF Pos MSW

PXM board

40095001YU

REG.POS

sensor

Resist

motor

Y-IDU

motor

M-IDU

motor

C-IDU

motor

K-IDU

motor

Belt

motor

Heat

motor

PXF board

JODEN 8P

FSENS 8P

TONER

14P

PXFIF 30P

OPTION 7P

PENDTNR 6P

PX4 board

2nd tray

(option)

Form end

sensor

Waste toner

sensor

YIDREG

MCKID

12P

HETBELT

HEAD3

15P

HEAD2

14P

HEAD1

13P

HEADPOW

12P

FF 12P

PXFIF 30P

HVOLT 16P COVOPN 2P PSIZE 6P

High-voltage power supply

PXC board

Form size detector

Cover open

MSW

PCR

Operator

panel

PCO

board

PU 40P

72PX2

PS SIMM

72PX2

D-RAM SIMM

64P

OKI HSP

36P

Paralle

CUIF 40P

POWER 30P

THE.RM 6P

RSENS 7P

Interlock switch

UPDOWN

12P

40985501TH Rev.1 5 /

Figure 3-1 Block Diagram

Page 6

MPU Memory controller ROM, PS SIMM

SysAD

SysCmd

Control

9 5

SysAD SysCmd Control

A D

Control

22 64 11

16244

16245

NMI

INTO

NR4700 LMQ-100

ExtReg

INT1 INT2

Reset

ColdReset

VCCOK

ModeIn

ModeClock

MasterClock

(Not installed)

External Agent

SysAD

SysCmd

Control

INT

REQ

ACK AUX

CLK

RST

1 1

9 5 1 1

1 1 1 1

1 1 2

uPD94704

NMI

S1-001-F6

INT

CLK RST

Interface controller

SysAD SysCmd Control ExtReq INT

ColdReset VCCOK ModeIn ModeClk

uPU66044 GN-014-LMU

BusReq BusAck AUX

Reset

A D

Control

WDATA

FSYNC

Control

PU I/F OP I/F

EEPD EEPCLK EEPCS0

EEPCS1

PCO

PCI

D A C

11 64 25

8 4 4

9 4

1 1 1

8 7

16 18 12

16244

D-RAM Max 80M

16245 16244

Engine WDATA ESYNC Control

244

Operator panel

244

EE-PROM #1

DI CLK DO CS

EE-PROM #2

DI CLK DO CS

74ACT1284 Bi-Centro

74ALS244

OKI HSP

Host I/F(Not installed)

PS -SIMM

OSC

Reset circuit

DIP SW

CLK

RSTIN

(TE6135 (6137), 16550, 53C80)

Figure 3-2 Block Diagram

40985501TH Rev.1 6 /

Page 7

3.1.2 CPU and Memory

(1) CPU (NR4700LMQ-100) (MIPS R4700)

CPU core : RISC CPU (MIPS R3000 compatible) CPU clock : 100 MHz Data bus clock : 50 MHz Data bus width: Exterior 64 bits, Interior 64 bits

(2) ROM (HP Color LaserJet emulation)

ROM capacity : 8 Mbytes (16-Mbit mask or OTP ROM four pieces) ROM type : 16 Mbits (1M x 16 bits) Access time : 100 ns

(3) PostScript SIMM (Adobe PostScript emulation)

ROM capacity : 8 Mbytes [(16 Mbit ROM two pieces)x 2SIMMs] ROM type : 16 Mbits (1M x 16 bits) Access time : 100 ns

(4) Resident RAM

RAM capacity : 16 Mbytes (16 Mbit D-RAM eight pieces) RAM type : 16 Mbits (1 M x 16 bits) Access time : 60 ns

(5) Option RAM (SIMM: two slots)

RAM capacity : Max. 32 Mbytes (4 Mbytes, 8 Mbytes, 16 Mbytes, 32 Mbytes) Access time : 60 ns, 70 ns, 80 ns Note that only the product for ODA has been mounted with 16 Mbytes (8 Mbytes x 2) SIMM as a resident.

The block diagram of CPU and memory circuits is shown in Figure 3-3.

40985501TH Rev.1 7 /

Page 8

DRAM01~04 (RAS0, CAS7~0)

Resident RAM

(16M Bytes)

Option SIMM

(Resident SIMM:

Only ODA)

Mask ROM (8M Bytes)

Flash ROM (2M Bytes)

PS SIMM

(8M Bytes)

DRAM11~14 (RAS2, CAS7~0)

SIMM0 H, L (RAS4, 5, CAS7~0)

CAS01~04 (CS0)

PSIMMH, L (CS2)

IFL1~4 (CS3)

(NR4700 LMQ-100)

CPU

(Memory Control LSI)

IMEM

(I/F Control LSI)

IIF

Control signals

AD [63 : 0]

CMD [7 : 0]

16244

16245 x 4

16Mbit DRAM x 4

16MbitMask ROM x 4

16MbitMask ROM x 2 x 2

4Mbit Flash ROM x 4

16Mbit DRAM x 4

Figure 3-3 Block Diagram of CPU & Memory

40985501TH Rev.1 8 /

Page 9

3.1.3 Reset Control

When power is turned on, a RESET-N signal is generated by the reset control IC (7705) which checks +5V power supply.

OKI HSP

IMEM

PD94704)

(

RT1

CT1

+5V

R620

25V

1.5

4.7K

+5V

16V

CP13

C583

Power ON

25V

0.1

7 2 3

8 4

SEN IN CT

V+ GND

IRST1

7705

WRST

RST

VREF

6 5 1

+5V

R590

25V

C586

0.1

(

PD66044)

4.7K

C50

100p 50V

IIF

HWRESET-N

Power OFF

RESET-N

COLDRST-N

Flash ROMs

CPU

(NR4700)

+5V

HWRESET-N

COLDRST-N

RESET-N

+3V

40985501TH Rev.1 9 /

Page 10

3.1.4 EEPROM Control

The NM93C46LN is an electrical erasable/programmable ROM of 64-bit x 16-bit configuration and the NM93C66N is an electrical erasable/programmable ROM of 256-bit x 16-bit configuration. Data input to and output from the ROM are bidirectionally transferred in units of 16 bits through a serial I/O port (EEPDAT-P) in serial transmission synchronized with a clock signal from the I/F control LSI(IIF).

IIF

(

PD66044)

EEPDAT-P

154

EEPCS0-P

150

EEPCS1-P

165

EEPCLK-P

151

NM93C46LN

DI DO

NM93C66N

DI DO

E2ROM1 (PCR-PCB)

PSIMMH (PS SIMM)

The EEPROM operates in the following instruction modes

Instruction Start Bit

Operation

Code

NM93C46LN

Address

NM93C66N

: Option

Data

Read (READ) Write Enabled (WEN) Write (WRITE) Write All Address (WRAL) Write Disabled (WDS) Erase Chip Erasable (ERAL)

1 1 1 1 1 1 1

10 00 01 00 00 11 00

A5 to A0

11XXXX 11XXXXXX

A5 to A0 A7 to A0

01XXXX 01XXXXXX 00XXXX 00XXXXXX

A5 to A0 A7 to A0

10XXXX 10XXXXXX

A7 to A0

D15 to D0 D15 to D0

40985501TH Rev.1 10 /

Page 11

CS SK

Write cycle timing (WRITE)

101

HIGH-Z

A5/A7

Read cycle timing (READ)

A4/A6

A1 A0 D15

D14

Min. 450 ns

STATUS

D1 D0

Max. 500 ns

BUSY READY

Max. 10 ms

DI DO

HIGH-Z

11 0

A5/A7 A4/A6

A1 A0

A5/A7

A4/A6

D1 D00

40985501TH Rev.1 11 /

Page 12

3.1.5 Centronics Parallel Interface

The CPU sets a BUSY-P signal to ON at the same time when it reads the parallel data (CENTDATA1-P to CENTDATA8-P) from the parallel port at the fall of STB-N signal. Furthermore, it makes the store processing of received data into a receive buffer terminate within a certain fixed time and outputs an ACK-N signal, setting the BUSY-P signal to OFF.

IIF

(

PD66044)

87, 88, 91 to 96

PDATA [7 : 0]

STB-N BSY-P

ACK-N

SEL

FAULT

INIT-N

SELIN-N

AUTOFEED

IC16, 17

IC17

IC16

2 to 9

+5V 14

FU2

CENT

DATA8-P DATA1-P STB-N

BUSY-P

ACK-N PE-P

SEL-P

FAULT-N

IPRIME-N SELIN-N AUTOFEED-N

+5V

PARALLEL DATA (DATA BITs 1 to 8)

0.5 µs min.

nStrobe

0.5 µs min.

0.5 µs max.

Busy

0 min.

nAck

0.5 µs to 10 µs 0 min.

40985501TH Rev.1 12 /

Page 13

3.1.6 Operator Panel Control

The operator panel consists of the following circuits.

PCR- PCO-

IIF

(µPD66044)

I/F Control LSI

OPCMD-P 146

OPSTS-P 147

OPSCLK-P 149

OPLOAD-N 150

IC19

3 4

CN1PANEL

1 6

Flexible

Cable

(1) BU6152S (LSI)

This LSI is connected to a clock synchronous serial port of the I/F Control LSI (IIF). It controls switch data input, LED data output and LCD data input/output according to the commands given by the I/F Control LSI. The I/F Control LSI sends the 2-byte (16-bit) command (OPCMDP) together with the shift clock signal (OPSCLK-N) to the Operator Panel Control LSI and then makes a predetermined input/output control if the command decoded by the Operator Panel Control LSI is found to be a normal command.

BU6152S

Operator Panel

Control LSI

DB4~DB7

RS R/W

LED

44780 LCD Control Driver

Zebra Rubber

LCD

On receiving a command sent from the I/F Control LSI, the Operator Panel Control LSI, synchronizing with the serial clock of the command, returns a 2-byte command response to the I/F Control LSI.

OPCMD-P

OPSCLK-N

OPSTS-P

OPLOAD-N

bit 0 bit 15

Command

bit 0

bit 15

Command response

40985501TH Rev.1 13 /

Page 14

3.2 PU (Printer Unit : PX4)

3.2.1 Outline

PU section executes controls such as LED head control, stepping motor control, high-voltage control, video I/F control, command I/F control and fusing control, and performs color image printing. The block diagram is shown in Fig3-4.

(1) The print data stored in the video memory is loaded to the LED head control and transferred

through each line to the LED head to light LEDs. This causes a static latent image to form on the photoconductive drum I.

(2) Stepping motor control: executes ID up/down control for the supply, carriage and ejection of

print media

(3) High-voltage power supply control: executes ON/OFF control for various kinds of power supply

units through serial interface. (4) Fusing control: executes the control of fusing temperature according to the type of media. (5) Video I/F control: receives the print data from the controller section (CU) and stores it to the

video memory. (6) Command I/F control: executes the receiving control of commands from the controller section

(CU) and sending control of status signals.

40985501TH Rev.1 14 /

Page 15

PD6-PCB

Low Voltage

Power Supply

High Voltage

Power Supply

Belt Unit

Y-ID Unit

M-ID Unit

C-ID Unit B-ID Unit

Second Tray

(option)

Fuser Unit

LED Head Eraser Lamp

M M M

M M

Y-ID M-ID C-ID B-ID BELT HEATER REGIST FRONT

Stepping Motor

PX4-PCB

PXF-PCB

VIDEO I/F

COMMAND I/F

AC 120V/230V

• Outlet sensor

• Inlet sensor1

• Inlet sensor2

• Write sensor

• Paper width sensor

• Humidity sensor

• Temperature sensor

• Paper end sensor

• Toner sensors (Y.M.C.K)

• ID Up/Down sensors (Y.M.C.K)

• Waste toner full sensor

• Waste box sensor

• Paper size sensor

• Oil roller sensor

• FF home sensor

• FF Paper end sensor

• Pinch roller up/down sensor

From CU

40985501TH Rev.1 15 /

Figure 3-4 Block Diagram

Page 16

3.2.2 CPU, Memory and LSI

(1) CPU (MSM65524)

CPU core : nX8 (Oki original)

CPU clock : 10 MHz

Data bus clock : 50 MHz

Data bus width: 8 bits (2) ROM (27512)

ROM capacity : 64K bytes

ROM type : 512K bits, 8 bits

Access time : 150 ns (3) Resident RAM (62256)

RAM capacity : 32K bytes (Static RAM)

Access time : 70 ns (4) VIDEO RAM (658512)

RAM capacity : 512K bytes (Pseudo Static RAM)

Access time : 70 ns

The block diagram of CPU, memory and LSI circuits is shown in Figure 3-5.

40985501TH Rev.1 16 /

Page 17

Analogy input (Temperature, Humidity, etc)

CPU BUS

VIDEO I/F

EEPROM

NM93C66N

VIDEO MEM

HM658512

CPU

MSM65524

(include AD Converter)

ROM

27512

Y HEAD I/F (3.3V)

M HEAD I/F (3.3V)

C HEAD I/F (3.3V)

B HEAD I/F (3.3V)

RAM

62296

MT DRIVER

MTD2005F

MT DRIVER

MTD2005F

LSI

(MB87D113)

MT DRIVER

MTD2005F

RESET

CLOCK

High voltage Power Supply Serial I/F (2CH)

Input Port Output Port

Stepping Motor x 8

Figure 3-5 Block Diagram of CPU, Memory & LSI

40985501TH Rev.1 17 /

Page 18

3.2.3 Reset Control

When power is turned on, a RST-N signal is generated by the rising sequence of +5V power supply.

+5V

C21

25V 0.1

0VL

PST592

VCC GND

IC3

OUT

R61

0.1W 3.3K 2

IC12

LS07

+5V

R63

0.1W 1K 21

Ω

22K

Q11

+5VD

Q12

IC12

+5V

0.1W 3.3K

R60

RST-N

+5V

RST-N

+5VD

LS07

Power OFF

Power ON

Approx. 110ms Approx. 20ms

40985501TH Rev.1 18 /

Page 19

3.2.4 EEPROM Control

The NM93C66N is an electrical erasable/programmable ROM of 256-bit x 16-bit configuration. Data input to and output from the ROM are bidirectionally transferred in units of 16 bits through a serial I/O port (out DATA-P and IN DATA-P) in serial transmission synchronized with a clock signal from the CPU(IC10).

IC10

(MSM65524)

OUT DATA-P

EEPRMCS0-P

INDATA-P

EEPRMCLK-P

NM93C66N

DI DO

The EEPROM operates in the following instruction modes

Instruction Start Bit

Read (READ) Write Enabled (WEN) Write (WRITE) Write All Address (WRAL) Write Disabled (WDS)

Operation

Code

1 1 1 1 1

10 00 01 00 00

Address

NM93C66N

11XXXXXX

01XXXXXX 00XXXXXX

A7 to A0

IC2 (PX4-PCB)

Data

D15 to D0 D15 to D0

Erase Chip Erasable (ERAL)

1 1

11 00

A7 to A0

10XXXXXX

40985501TH Rev.1 19 /

Page 20

CS SK

Write cycle timing (WRITE)

101

HIGH-Z

Read cycle timing (READ)

A1 A0 D15

D14

Min. 450 ns

STATUS

D1 D0

Max. 500 ns

BUSY READY

Max. 10 ms

DI DO

HIGH-Z

11 0

A7 A6

A1 A0

D1D14D15 D00

40985501TH Rev.1 20 /

Page 21

3.2.5 LED Head Control

LSI PIN

LSI IC1

(MB87D113)

PX4-PCB

Signal HDDTY3 HDDTY2 HDDTY1 HDDTY0 STBY3 STBY2 STBY1 STBY0 HDCK0 HDLD0 HDDTM3 HDDTM2 HDDTM1 HDDTM0 STBM3 STBM2 STBM1 STBM0 HDCK1 HDLD1 HDDTC3 HDDTC2 HDDTC1 HDDTC0 STBC3 STBC2 STBC1 STBC0 HDCK2 HDLD2 HDDTK3 HDDTK2 HDDTK1 HDDTK0 STBK3 STBK2 STBK1 STBK0 HDCK3 HDLD3

Lsi Pin IC1-136 IC1-135 IC1-134 IC1-133 IC1-144 IC1-143 IC1-142 IC1-141 IC1-137 IC1-140 IC1-149 IC1-148 IC1-147 IC1-146 IC1-157 IC1-155 IC1-154 IC1-153 IC1-151 IC1-152 IC1-161 IC1-160 IC1-159 IC1-158 IC1-169 IC1-168 IC1-167 IC1-166 IC1-164 IC1-165 IC1-173 IC1-172 IC1-171 IC1-170 IC1-181 IC1-180 IC1-179 IC1-178 IC1-176 IC1-177

CN2CN1 CN3 HEAD CN

PD6-PCB

CN1 HEAD1-4 HEAD1-3 HEAD1-2 HEAD1-1 HEAD1-10 HEAD1-9 HEAD1-8 HEAD1-7 HEAD1-5 HEAD1-6 HEAD2-1 HEAD1-13 HEAD1-12 HEAD1-11 HEAD2-7 HEAD2-6 HEAD2-5 HEAD2-4 HEAD2-2 HEAD2-3 HEAD2-11 HEAD2-10 HEAD2-9 HEAD2-8 HEAD3-3 HEAD3-2 HEAD3-1 HEAD2-14 HEAD2-12 HEAD2-13 HEAD3-9 HEAD3-8 HEAD3-7 HEAD3-6 HEAD3-15 HEAD3-14 HEAD3-13 HEAD3-12 HEAD3-10 HEAD3-11

CN2 HEAD1-4 HEAD1-3 HEAD1-2 HEAD1-1 HEAD1-10 HEAD1-9 HEAD1-8 HEAD1-7 HEAD1-5 HEAD1-6 HEAD2-1 HEAD1-13 HEAD1-12 HEAD1-11 HEAD2-7 HEAD2-6 HEAD2-5 HEAD2-4 HEAD2-2 HEAD2-3 HEAD2-11 HEAD2-10 HEAD2-9 HEAD2-8 HEAD3-3 HEAD3-2 HEAD3-1 HEAD2-14 HEAD2-12 HEAD2-13 HEAD3-9 HEAD3-8 HEAD3-7 HEAD3-6 HEAD3-15 HEAD3-14 HEAD3-13 HEAD3-12 HEAD3-10 HEAD3-11

Y HEAD

M HEAD

C HEAD

K HEAD

CN3 Y600-5 Y600-4 Y600-8 Y600-7 Y600-14 Y600-13 Y600-12 Y600-11 Y600-2 Y600-10 M600-5 M600-4 M600-8 M600-7 M600-14 M600-13 M600-12 M600-11 M600-2 M600-10 C600-5 C600-4 C600-8 C600-7 C600-14 C600-13 C600-12 C600-11 C600-2 C600-10 K600-5 K600-4 K600-8 K600-7 K600-14 K600-13 K600-12 K600-11 K600-2 K600-10

HEAD CN Y-5 Y-4 Y-8 Y-7 Y-14 Y-13 Y-12 Y-11 Y-2 Y-10 M-5 M-4 M-8 M-7 M-14 M-13 M-12 M-11 M-2 M-10 C-5 C-4 C-8 C-7 C-14 C-13 C-12 C-11 C-2 C-10 K-5 K-4 K-8 K-7 K-14 K-13 K-12 K-11 K-2 K-10

40985501TH Rev.1 21 /

Page 22

PX4-PCB

LED Head

IC1

(MB87D113)

HDDTX0

HDDTX1

HDDTX2

HDDTX3

HDCLKX

HDLDX

STBX0

STBX1

STBX2

STBX3

Head Lsi

with EEPROM

Driver IC

Driver IC Driver IC

Driver IC

X=Y, M, C or B

Data is transferred to the head unit starting with the data at the left end of the paper in the synchronous serial transfer mode using the HDCKX signal as the sync signal.

The total number of LEDs in the head unit is 4992. The data for the driver latches causes the corresponding LEDs to light only during the time when the STBXn signal is output. There are four STBXn signals (STBX0, STBX1, STBX2 and STBX3), each of which controls the corresponding driver for 1248 LEDs (4992/4).

The four STBXn signals must be output within the time when the LEDs for one line continue to emit light. After the data is moved to the latches by the STBXn signal, the transfer of the data of the next line can be started.

40985501TH Rev.1 22 /

Page 23

The timing chart for the outline of this operation is shown below.

HDCKX HDDTX0 HDDTX1 HDDTX2

59 2 6 10 4986 4990 3

11 4987 4991

4985

4989

✰

The LED lights when the head data is HIGH.

HDDTX3

HDCKX HDDTX0 HDDTX1 HDDTX2 HDDTX3

HDLDX STBX0 STBX1 STBX2 STBX3

4 8 12 4988 4992

Each figure denotes the dot position taking the left end bit position as "1".

Print activation timing for the 1st line

LEDs

1-1248

lit

LEDs

1249-2496

lit

LEDs

2497-3744

lit

Print activation timing for the 2nd line

LEDs

3745-4992

lit

Print activation timing for the final line

40985501TH Rev.1 23 /

Page 24

3.2.6 Motor Control

OKIPAGE 8c controls the paper flow by eight motors (Four ID Motors, Hopping Motor, Front feed Motor, Belt Motor).

(1) ID motor

The four ID motors for rotate four color IDs are driven by the driver IC according to the control signal from the IC1 (MB87D113). The IC8 (62354) is a Digital to Analogy Converter controlled by CPU (IC10 : MSM65524) and its output voltage controls several ID motor current.

40985501TH Rev.1 24 /

Page 25

IC1 (MB87D113)

189 188

111

YIDON

190

192 191

MIDON

193

195 194

CIDON

196

200 199

KIDON

201

YIDPHA YIDPHB

IDMOTON-N

MIDPHA MIDPHB

CIDPHA CIDPHB

KIDPHA KIDPHB

26 17

27 16

23 20

26 17

27 16

23 20

26 17

27 16

23 20

26 17

27 16

23 20

IC15

MTD2005F

IC16

MTD2005F

IC17

MTD2005F

IC18

MTD2005F

Y-ID REG 3 7

8 12

3 7

8 12

3 7

8 12

3 7

8 12

1 3

2 4

9 11

10 12

5 7

6 8

1 3

2 4

Y-ID motor

M-ID motor

C-ID motor

K-ID motor

IDREF IDMOTON-N

XIDON

XIDPHA

XIDPHB

Rotation

IC8

(62354)

Power ON

IDREF

Initial process

Stop

T0 T1 T2

T4 T5 T6

Reverse rotation

Forward rotation speed : T0 to T3= (Print operation) Reverse rotation speed : T4 to T7= (ID up operation)

40985501TH Rev.1 25 /

Page 26

(2) Regist motor

The Regist motor is driven by the driver IC14 according to the control signal from the LSI (IC1: MB87D113). The Regist motor current is controlled by the DAC (IC8 : 62354).

REGON

REGPHA

REGPHB

PX4-PCB

IC1

(MB87D113)

IC8

(62354)

T0 T1 T2 T3

REGPHA

203

REGPHB

202

REGON

204

REGREF

27, 16

23, 20

IC14

(MTD2005F)

YIDREG

T4 T5 T6 T7

Regist

Motor

Rotation

Stop

Forward rotation

Reverse rotation

(Hopping operation) (Regist operation)

Hopping Operation speed: T0 to T3 = Regist Operation speed: T4 to T7 =

40985501TH Rev.1 26 /

Page 27

(3) Front feed motor

The Front feed motor is driven by the driver IC13 according to the controll signal from the LSI (IC1 : MB87D113). The Regist motor current is controlled by the DAC (IC8 : 62354)

FFON

FFPHA

FFPHB

PX4-PCB

IC1

(MB87D113)

IC8

(62354)

T0 T1 T2 T3

211

208

212

FFPHA

FFPHB

FFON

FFREF

27, 16

23, 20

IC13

(MTD2005F)

Front Feed

Motor

T4 T5 T6 T7

Rotation

Stop

Forward rotation

Reverse rotation

(Paper feed operation) (Pinch roller up/down operation)

Paper feed operation speed: T0 to T3 = Pinch roller up/down operation speed: T4 to T7 =

40985501TH Rev.1 27 /

Page 28

(4) Belt motor

The Belt motor is driven by the driver IC19 according to the control signal from the LSI (IC1 : MB87D113). The Belt motor current is controlled by the DAC (IC8 : 62354).

BELTON

BELTPHA

BELTPHB

PX4-PCB

IC1

(MB87D113)

IC8

(62354)

T0 T1 T2 T3

BELTPHA

BELTPHB

BELTON

BELTREF

27, 16

23, 20

IC19

(MTD2005F)

HETBELT

Belt Motor

Rotation

Forward rotation

(Belt feed operation)

Belt feed speed: T0 to T3 = µs

Reverse rotationStop

40985501TH Rev.1 28 /

Page 29

(5) Heat motor

The Heat motor is driven by the driver IC20 according to the control signal from the LSI (IC1 : MB87D113). The Heat motor is controlled by the DAC (IC8 : 62354).

HETON

HETPHA

HETPHB

PX4-PCB

IC1

(MB87D113)

IC8

(62354)

T0 T1 T2 T3

HEATPHA

206

HEATPHB

205

HEATON

207

HEATREF

27, 16

23, 20

IC20

(MTD2005F)

HETBELT

Heat Motor

T4 T5 T6 T7

Rotation

Stop

Forward rotation

(Heating operation)

Heating speed: T0 to T3 = µs

Reverse rotation

40985501TH Rev.1 29 /

Page 30

3.2.7 Fuser Temperature Control

For the temperature control by heater control, the variation in the resistance of the thermistor is A/ D converted in and the resultant digital value is read and transferred to the CPU. The CPU turns on or off the HEATON-N signal according the value of the signal received from to keep the temperature constant.

Immediately after the power is turned on, the thermistor is checked for shortcircuit and breakdown. If the thermistor is shorted, the A/D converted value shows an extremely high temperature, so that the shortcircuit can be detected. If the breakdown of the thermistor occurs, the A/D converted value shows the normal temperature. In this case, the thermistor breakdown can be detected by the sequence shown at the end of this section. If the heater is overheated, 5V supply is turned off by detecting that the resistance of the thermistor exceeds the predetermined value.

PX4-PCB

Heat roller Thermistor

: TH

Back-up roller

thermistor

: TB

Thermostat

Heater

THERM

+5V

Interlock SW

Thermistor

Thermistor breakdown

detect

circuit

Thermistor breakdown

detect

circuit

IC10

(MSM65524)

AD7

AD6

Low Voltage Power Supply

Bus

IC1

(MB87D113)

+5V

HEATON-N

237

Q13

+5VD

Q10

AC120V/230V

Power SW

40985501TH Rev.1 30 /

Page 31

The temperature control is described below.

T : Heat roller temperature

Temperature

˚C

T = 150˚C

T= + 1/2

C Hopping C Hopping

T : Back-up roller temperature

T : Printing temperature

ON OFF OFFHEATON-N

Heater is controlled by CPU (IC10 : MSM65524) as followings.

Temperature

T<150˚C

150˚C<T<T

T <T

Relationship of the printing temperature (T ) and speed against media type as follows.

Media type

Light

Medium Light

Medium

Medium Heavy

Heavy

Special

Transparency

HEATON-N

C Hopping

OFF

200˚C 200˚C 215˚C 215˚C 220˚C 225˚C 220˚C

Print Speed

8ppm 8ppm 8ppm 8ppm 8ppm 6ppm 6ppm

40985501TH Rev.1 31 /

Page 32

To detect the breakdown of the heater, the heater is turned on. If the corresponding temperature rise is not detected, it is judged that heater breakdown occurs. To shorten the breakdown detecting time, the following circuit is used. When the thermistor is checked for breakdown immediately after the power is turned on, the THCHK-N signal is turned on to turn transistors Q1 and Q506 off. As a result, the thermistor serial resistance is varied to increase the reading resolution.

IC10

Heat roller

Thermistor

(MSM65524)

Back-up roller

Thermistor

IC1

(MB87D113)

230

Q506

40985501TH Rev.1 32 /

Page 33

3.2.8 Fan Motor Control

OKIPAGE 8c has two cooling fans. The stop/rotation of the fan motor is controlled by a FANON0-P and FANON1-P signals. When the fan motor rotates normally, a FANERR0-P and FANERR1-P signals generated in the hole element built in the fan motor is input to the IC1 (MB87D113).

PX4-PCB

IC1

(MB87D113)

+32V

FAN1

FANON0-P

233

FANERR0-P

239

FANON1-P

232

FANERR1-P

238

FAN Motor1

+5V

2 3

+32V

POWER

FAN Motor2

+5V

Low Voltage Power Supply

FANON -P FANALARM -N

1 sec max

0.7 sec max

FAN MOVE

Lockn=0, 1

Fan motor start:Power on Fan motor stop: • The motor immediately stops when a fan error occurs.

• The motor stops in the cover open state (fan1 only).

40985501TH Rev.1 33 /

Page 34

3.2.9 Sensor Supervision

OKIPAGE8c unit is provided with 23 sensors. The sensor signals are read directly from the input ports of CPU (IC10: MSM65524) and LSI (IC1: MB87D113).

Front Feeder Unit

Pinch roller

up/down sensor

Front feeder

paper end sensor

Front feeder

Home position sensor

PD6-PCB

PENDF-N

EFPOS-N

PX4-PCB

IC10

(MSM65524)

IC1

(MB87D113)

10 217, 218

219,220 213, 214

215, 216

HEATR-N

HOP-N

PAPIN-N

PAPW1D-N

PSWR-N

HUM-P

TEMP-P

PEND-N

TNRY.M.C.K

IDPOSY.M.C.K

TNRFUL-N

PXF-PCB

PXM-PCB

Inlet sensor1

Inlet sensor2

Write sensor

Paper width sensor

Humidity sensor

Temperature sensor

Paper end sensor

Toner sensor(Y.M.C.K)

ID up/down sensor(Y.M.C.K)

Wast toner full sensor

OILPAD

Oil roller

sensor

TNRBOX-N

4, 5, 8, 9 4

PAPSIZE0~3

Toner box sensor

PXC-PCB

1st Tray Paper size sensor board

40985501TH Rev.1 34 /

Page 35

3.2.10 Cover Open

When the cover (upper cover, side cover, front cover) is opened, a cover open microswitch opened. This makes a CPUCVOPN signal low, then off the +5VD, thereby the CPU detects the open state. Furthermore, opening the cover stops applying a +32V power to the high voltage power supply unit and stepping motor drivers, and stops applying a AC120V/230V power to the fuser unit, resulting in stopping all high voltage outputs, motor driver outputs and heater output.

High Voltage

Power Supply

High Voltage

output

Low Voltage

Power Supply

AC120V/

230V

+32V

HTDV HTDV HTDV

stepping motor drivers

5VD+5V

IC10

(MSM65524)

PX4-PCB

MSW x 3

(Upper cover, side cover and Front cover)

Fuser Unit

Interlock SW

(Upper cover)

CPUCVOPN

+5VD

Cover close Cover open

40985501TH Rev.1 35 /

Heater

Page 36

3.2.11 Power Supply Interface

The power supply interface is a 16 bit clock synchronous serial interface between the synchronous serial I/O ports of CPU (IC1: MB87D113) and the power control LSI in the power supply board (High voltage) under the control of the CPU (IC10: MSM65524).

When the control section transmits a command on POWDOUTn-P signal in synchronization with the clock (POWSCLKn-N) to the power supply board, this power supply board transmits a response on POWDINn-N signal in synchronization with the same clock to the control section.

The commands include the control data of the high-voltage power supply, etc. The responses include high voltage output value, etc.

PX4-PCB

(MB87D113)

IC10

(MSM65524)

IC1

225 224 226

HVOLT

POWDOUT1-P POWSCLK1-N POWDIN1-P

High Voltage Power Supply Board

LSI

POWDOUTn-P

POWSCLKn-N

POWDINn-P

POWSQCR-N

223

228 227 229

LSB

b0 b1 b2 b3 b4 b5 b6 b7 b8 b9 b10 b11 b12 b13 b14 b15

POWSQCR-N

POWDOUT2-P POWSCLK2-N POWDIN2-P

Command

MSB

Response

b0 b1 b2 b3 b4 b5 b6 b7 b8 b9 b10 b11 b12 b13 b14 b15

LSI

n=1, 2

40985501TH Rev.1 36 /

Page 37

3.2.12 Option (2nd paper feeder) Interface

The option interface is a 8 bit clock synchronous serial interface between the synchronous serial I/O ports of CPU (IC10: MSM65524) and 4 bit micro-controllers in the option control boards under the control of the CPU (IC10: MSM65524). First the control section transmits a command on OPTSD-P signal in synchronization with the clock (OPTSCLK-N) to the option. The option which receives the command will analyze it and assert OPTSDR-N signal after becoming a ready state for returning a response. When the control section recognizes the OPTSDR signal asserted, it will output a clock signal only at this time. The option will output a response on the OPTSD-P signal line in synchronization with this clock signal (OPTSCLK-N). The commands include the control data, etc. The responses include sensor information, etc.

OPTSD-P

OPTSCLK-N

OPTSDR-N

Jackln connector

PX4-PCB PXF-PCB

PXFIF

IC10

(MSM65524)

b0 b1 b2 b3 b4 b5 b6 b7 b0 b1 b2 b3 b4 b5 b6 b7

OPTSD-P

OPTSCLK-N

OPTSDR-N

COMMAND RESPONSE

PXFIF OPTION

(14P)

Jackln connector (14P)

AOLO-PCB (2nd paper feeder)

Control circuit

40985501TH Rev.1 37 /

Page 38

3.2.13 Power Supply Board

The power supply circuit consists of the low-voltage power supply circuit and the high-voltage power supply circuit. The low-voltage power supply circuit adopts a switching power supply system and provides DC voltages required for the control of the equipment. The high-voltage power supply circuit receives low-voltage power from the low-voltage power supply circuit and provides various high voltages required for the electrophotographic process according to the control signals from the control section.

(1) Low-voltage power supply circuit

F1 F52

ACIN

Noise

filter

circuit

Switching

circuit/

Resonation

Rectifying/ smoothing

circuit

+8V –8V

ACON-N

POW ON

Heater control

circuit

ACOUT (CN1)

Switching / resonance

control

circuit

Rectifying/ smoothing

circuit

Rectifying/ smoothing

circuit

over voltage/

over current

detector

circuit

F51

regulating

circuit

Voltage detector

circuit

+32V +3.3V

over voltage/

over current

detector

+5V

+12V

-12V +32V +5V

+ 5V + 32V

+ 3.3V

+ 12V – 12V

40985501TH Rev.1 38 /

Page 39

(2) High-voltage power supply circuit

This high-voltage power supply circuit receives the high-voltage generation timing control command that is transmitted in serial through the power supply interface from the control section. It decodes this command by LSI (IC102, 201) and outputs high-frequency pulses (PWM) to the corresponding high-voltage generating circuits through pins 11, 12, 13, 14, 15, 16, 17 and 18 of LSI (IC102, 201). It supplies +38V to each high-voltage generating circuit as the source voltage. When the cover is open, the supply of +32V is interrupted to interrupt all the high-voltage outputs. The relationship between the PWM output pins and the highvoltage outputs is shown in the following table.

Power Supply Board (High voltage)

Control section

G/A

+5V

+32V

+5V

+32V

LSI

(IC102)

LSI

(IC201)

11 12

+5V

DB2(-)

(common)

+5V

DB1(+)

+5V/+12V

Reference generation

+5V

TR-Y

DB2(-)

(common)

DB2(-)

(common)

DB2(-)

(common)

DB2(-)

(common)

SB1(+)

SB2(-)

FIX

+32V

TR-Y

DB-Y

DB-M

DB-C

DB-B

FIX

TR-Y

+12V

40985501TH Rev.1 39 /

+12V

Reset circuit

Output inhibit circuit

LSI Reset

Reference generation

TR-M

TR-C

TR-B

TR-M

TR-C

TR-B

TR-M

TR-C

TR-B

Page 40

[IC102]

PWM output pins

High-voltage

outputs

DB-Y DB-M DB-B SB

DB-C

11 11, 12 11, 13 11, 14 11, 15

—

-275V

+300V

—

-275V

+300V

—

-275V

+300V

-290V

+300V

+450V

-450V

Note 1) No output for 11 only. When DB2(-) is outputted, pulse is outputted simultaneously. Note 2) -255V only for the first page printing

[IC201]

High-voltage

PWM output pins

outputs

FIX CH TR-M TR-C

TR-Y

0.5~2.5KV

TR-B

1.35KV

0.5~4KV

40985501TH Rev.1 40 /

Page 41

Interface command

A.Output ON/OFF

b13

DB1

Higher 8 bits b120b11

DB2-Y, M, C, B

BCMY

b10

SB2

DB2

common

DB1/SB1

common

FIX

CHAN1

CHAN2

Lower 8 bits

22 30H 10H 30H

b14

b15

SB1

SB2

TR-Y, M, C, B

BCMY

Note 1) With the bit corresponding to each output, if it is 0, OFF and 1, ON. Note 2) The output which has plural bit control is outputted by AND condition (where

both bits are 1(ON)). Also, the combination of bits such as reverses output polarity is prohibited.

B. Output voltage settings

CHAN1

Lower 8 bits

34H 44H 54H 64H

Pertinent

output

DB-Y DB-M DB-C

DB-B

Higher 8 bits

DB2 Output voltage setting value

74H 84H 94H

CHAN2

24H 44H 64H 74H 84H 94H

C. Output current measurement

Read command

(Lower 8 bits)

CHAN2

17H

DB1

SB1 SB2

FIX CH

TR-Y TR-M

TR-C

TR-B

DB1 Output voltage setting value SB1 Output voltage setting value SB2 Output voltage setting value

FIX Output voltage setting value CH Output voltage setting value

TR Output voltage setting value

Read data

(Higher 8 bits reply)

Measured current value of FIX output

Note 1)

40985501TH Rev.1 41 /

Page 42

3.3 PCR-PX4 I/F

3.3.1 Outline

PCR-PX4 I/F sends video data, which received, edited, extracted and produced, to PX4, the printer engine control section, and allows inter-transmission of commands and status. Also, the power for PCR is supplied through this I/F connector.

Video

Interface

CU PU

WDATA0~7 COL0, COL1

WCLK, LSYNC FSYNCY, FSYNCM, FSYNCC, FSYNCK

LED head

write circuit

timing circuit

Command

Interface

Division

Video

interface

Command

Signal name WDATA0~7 COL0 COL1 WCLK LSYNC FSYNCY FSYNCM FSYNCC FSYNCK PPRDY

PPRDY, PRDY, ERR, SCLK, SBSY

CPRDY, PRINT, CBSY

Polarity

Neg. Neg. Neg. Neg. Neg. Neg. Neg. Neg. Neg. Pos.

CU•CP

.

,

Print data (8 bit parallel) Color designating signal Color designating signal Serial image signal clock Synchronizing signal of line scan Yellow page synchronizing signal Magenta page synchronizing signal Cyan page synchronizing signal Black page synchronizing signal Printer Power-on/ready

Transmit-receive

control

Functions

interface

40985501TH Rev.1 42 /

PPDY ERR SCLK SBSY CPRDY PRINT CBSY SC

Neg. Neg. Neg. Neg. Pos. Neg. Neg. Neg.

,

.

↔

Printer Ready Changed status notifying signal Clock for SC PU occupies SC and SCLK Controller Power-on/ready Print start CU occupies SC and SCLK Status/command signal

Page 43

3.3.2 Video I/F

Video data is sent from PCR in synchronization with WCLK sent from PX 4 When PX4 is in ready status (PRDY = Low), PCR gives a printing start instruction to PX4 by PRINT Low Plus or command to send an extracted video data. When receiving the printing start instruction, PX4 becomes BUSY status (PRDY=High) and starts a paper hopping. After the paper reached the specified position, PX4 sends each FSYNC of WCLK, LSYNC and YMCK.

FSYNC becomes enabled due to its tandem structure, synchronizing with the pass of a paper through each ID. If PX 4 becomes enabled to receive next page video data during printing the first page, it sets PRDY to Low and returns to Ready status.

For 4-color video data, 4 colors are sent through 1 line in 8 bit width in synchronization with LSYNC. 4 patterns of status of COL1,_ indicate which YMCK the currently sent data is. The color data is sent in accordance with each status by changing COL1,_ 4 times at one LSYNC. Even when FSYNC is disabled, the sending mode of each color exists only for the specified WCLK, but the sending of video data won’t be executed.

IMEM

PD94704

WDATA7-N

WDATA0-N

COL1-N COL0-N

WCLK-N

LSYNC-N

FSYNCY-N

FSYNCM-N

FSYNCC-N

FSYNCK-N

PX4-PCBPCR-PCB

+5V

IC13

16244

IC13

EM1

+5V

x 8

IC1

MB87D113PFV

(LSI)

WDATA7

WDATA0

COL1 COL0

WCLK

LSYNC

FSYNCY FSYNCM FSYNCC FSYNCK

IIF

PD66044

PRINT-N

PRDY-N

40985501TH Rev.1 43 /

IC20

IC10

M65524

(CPU)

PRDY

Page 44

PRDY

FSYNCY

FSYNCM

FSYNCC FSYNCK

LSYNC

COL1 COL2

WDATA0~7

WCLK

Print interval for one page

Drum one sycle or more, including heater warm up time (MAX. 60min.)

Under 4-color printin

LSYNC

COL0 COL1

WDATA0~7

WCLK

LSYNC

WDATA0~7

Enlarged chart for 4-color printing

Y=00 M=01 C=10 K=11

YDATA MDATA CDATA KDATA YDATA MDATA CDATA KDATA

1 line 4-color data

40985501TH Rev.1 44 /

Page 45

3.3.3 Command Interface

(1) Command Interface Time Chart

Power on

Communication enabled status

PPRDY

CPRDY

CBSY

Command

SBSY

MSB LSB MSB LSB

SCLK

Status

*1 For timing to set PPRDY and CPRDY to on, which of them is earlier is not specified.

After powering on, they are set to on when the initial process is completed and they are changed to the communication enabled status. Therefore, at the point when PPRDY and CPRDY are set to on, the communications are to become the enabled status.

*2 SCLK should be 50% DUTY.

40985501TH Rev.1 45 /

Page 46

(2) Controlling Command Interface

a) Under regular operation

CU sets CBSY to ON and sends a command to PU. At this time, PU section sends clock signals and CU recognizes the completion of command sending by receiving 8 clock signals. And CU returns CBSY to OFF. Next, PU sets SBSY to ON and sends a reply for the command it receives. At this time, PU sends clock signals and returns SBSY to OFF in the same way. CU recognizes the completion of the reply receiving by receiving 8 clock signals. If the completion of sending or receiving cannot be recognized for a fixed time, a command is retransmitted. Therefore, a timer is provided for monitoring the completion of communication, and started when a command is sent and stopped when the receiving is completed. The value for timer should be determined from higher values than T max. value in the following figure.

timer timer stop timer

CBSY

Sending completed

SBSY

Receiving completed

T max.

T max= 19ms

40985501TH Rev.1 46 /

Page 47

b) Under irregular operation-1 (when a command sending is not normally performed)

When CU sends a command to PU and a noise or hardware malfunction causes to skip clock sending, CU cannot recognize the completion of sending, so CBSY is left ON. Therefore, return CBSY to OFF once by the time-out of timer described in (1), and after time compensation for T min., retry the sending and receiving sequence by retransmitting the command. When the communication cannot be succeeded by the first retry, execute the second retry. When the second retry cannot succeed, some message is indicated to the operator and the system is to be shut down.

Note: Since the PU section cannot recognize the skip of the clock, an irregular

command from CU is processed as it is, and when CBSY is set to OFF, a reply for the command is returned. Thus, for CU section, a reply is returned even though the sending cannot be completed, so it must receive and flush the reply.

timer

CBSY

Sending completed

SBSY

Receiving completed

c) Under irregular operation -2 (When a reply receiving is not normally performed)

When PU returns a reply to CU and a noise or hardware malfunction causes to skip clock sending, CU cannot recognize the completion of receiving. Therefore, retransmit the command by the time-out described in (1) and retry the sending and receiving sequence. When the communication cannot be succeeded by the first retry, execute the second retry. When the second retry cannot succeed, some message is indicated to the operator and the system is to be shut down.

timer timer

CBSY

time-out

retry

T min

time-out

retry

timer

Sending completed

SBSY

Receiving completed

40985501TH Rev.1 47 /

Page 48

4. TROUBLESHOOTING

4.1 Troubleshooting Table

Normal operation

When powered on, the page printer

turns on LEDs for about one sec-

ond to check whether the LEDs and

the LCD are normal.

Normal operation

To clear this message, press the

RESET switch.

To clear this message, press the

RESET switch.

Normal operation

When “CLEARABLE WARNINGS”

on the menu is set to “ON”, press

the RECOVER switch to clear the

message.

Normal operation

Displayed when the page printer is powered on.

Table 4.1 Status and alarm indication list

Undefined Undefined Undefined Undefined ON OFF

Displayed while the controller is initializing (after the

page printer is powered on).

The printer is in the on-line mode.

The printer is in the off-line mode.

Undefined Undefined Undefined Undefined OFF OFF

Undefined Undefined Undefined Undefined ON Undefined

Undefined Undefined Undefined Undefined OFF Undefined

Displayed while the page printer is printing.

Displayed while the page printer is receiving data

or performing the output processing.

Indicates that the data remains unprinted in the

buffer.

This message is displayed data remain unprinted

in the buffer (offline). This message prompts the

user to press the RESET switch, if cancel the data.

This message prompts the user need to press the

RESET switch before writing the new menu setting

in EEPROM.

This message is displayed when the printer cannot

reset automatically as there remain data and tem-

porary attributes (DLL, macro, user patter, or user

symbol set) .

Indicates that the data (to the end of processing) is

Undefined Undefined Undefined Undefined Undefined Undefined

Undefined Undefined Undefined Undefined Blink Undefined

Undefined Undefined Undefined Undefined Undefined Undefined

Undefined Undefined Undefined Undefined ON Undefined

Undefined Undefined Undefined Undefined OFF OFF

Undefined Undefined Undefined Undefined Blink OFF

being canceled.

Indicates that a printer language which is not avail-

able has been specified by the PJL command.

Undefined Undefined Undefined Undefined Undefined Undefined

Displays the number of a copies being printed out

when the number of copies being printed is two or

more.

Undefined Undefined Undefined Undefined Undefined Undefined

ttttt

Message K C M Y READY ATTENTION Trouble or Status Remedy

INITIALIZING

ON-LINE . xxx

OFF-LINE . xxx

PRINTING

PROCESSING . xxx

DATA PRESENT. xxx

RESET TO FLUSH

Category LCD Status LED

Daily status

40985501TH Rev.1 48 /

RESET TO SAVE

FLUSHING JOB

PS NOT AVAILABLE

COPY nnn/mmm

Page 49

This massage is cleared when the

drum is properly positioned or

sensor lever which is exchanged

correspond to the LED color lights.

Normal operation

This message is cleared when the

toner cartridge is replaced.

Normal operation

This message is cleared when the

specified drum is replaced.

Indicates that Toner sensor is abnormal when page

counter is above thirty . (The LED of the color lights)

Indicates that the page printer enters the Power

Save mode (in which the heater is powered off).

Indicator that the toner of the specified color is

running out. However, when “LOW TONER” is set

to “OFF,” the ATTENTION indicator blinks.

Indicates that the life of a specified color drum has

come.

(The LED of the color lights.)

After the drum is replaced, its drum

counter must be reset. (See the us-

er’s manual.)

Normal operation

This message is cleared when the

Heat unit Assy is replaced. After the

Heat unit Assy is replaced, its

counter must be reset. (See the

user’s manual.)

Normal operation

This message is cleared when the

Indicates that the life of the Heat unit Assy has come.

Indicates that the life of the belt cassette Assy has

come.

belt cassette assembly is replaced.

After the belt cassette assembly is

replaced, its counter must be reset.

(See the user’s manual.)

Normal operation

Cleans the data left unprinted in the buffer and ini-

tializes the printer to the user default status. The

Normal operation

temporary DLL, macro, and user patterns are de-

leted.

Prints out a demo page.

This operation is started by a command when the

READY LED is on or by a switch when the READY

LED is blinking.

ON ON ON ON Undefined ON

Message K C M Y READY ATTENTION Trouble or Status Remedy

TNR SNS *******

Category LCD Status LED

Daily status

40985501TH Rev.1 49 /

ON ON ON ON Undefined ON or Blink

Undefined Undefined Undefined Undefined Undefined Undefined

POWER SAVING

TNR LOW *******

ON ON ON ON Undefined ON

CNG DRUM *******

Undefined Undefined Undefined Undefined Undefined ON

FUSER LIFE

Undefined Undefined Undefined Undefined Undefined ON

BELT LIFE

OFF OFF OFF OFF OFF OFF

RESET

Undefined Undefined Undefined Undefined Blink or ON Undefined

PRINT DEMO PAGE

Page 50

Normal operation

Prints out a menu setting.

This operation is started by a command when the

This massage is cleared when the oil

roller assy is replaced. After the oil roller

assy is replaced, its counter must be

reset. (See the user’s manual)

Normal operation

READY LED is on or by a switch when the READY

LED is blinking.

Indicates that the life of the Oil roller assy has come.

(Warning)

Indicates that the life of the Oil roller assy has come.

(Alarm)

Prints out all character sets (fonts) that the page

printer contains.

This operation is started by a command when the

This message temporarily disap-

pears when a cover of the page

printer is opened but will be dis-

READY LED is on or by a switch when the READY

LED is blinking.

Displayed when 50 pages are printed after “Toner

Low” was detected to prompt the user to replace

the toner cartridge.

played every 20 pages unless the

cartridge is replaced.

This error is reset when the box

toner Assy is replaced. Printing is

suppressed until it is replaced.

The front feeder becomes not avail-

able when the RECOVER switch is

pressed. The other tray is available.

This message is cleared when the

front feeder assembly is replaced.

This error is reset when the cover is

closed. If this error occurs fre-

quently, go to 6.5.2.

This error is recovered when the belt

Displayed when 100 pages are printed after “Box

toner Assy Full” was detected to prompt the user to

replace the box toner Assy.

Indicates that the front feeder has caused a home

position error.

Indicates that the printer covers is open.

Indicates that the belt cassette Assy has not been

cassette Assy is installed. Printing

is suppressed until the belt cassette

assembly is installed.

installed.

Undefined Undefined Undefined Undefined Blink or ON Undefined

Message K C M Y READY ATTENTION Trouble or Status Remedy

PRINT MENU

Category LCD Status LED

Daily status

40985501TH Rev.1 50 /

Undefined Undefined Undefined Undefined Undefined ON

Undefined Undefined Undefined Undefined OFF Blink

Undefined Undefined Undefined Undefined Blink or ON Undefined

OIL ROLLER LIFE

PRINT FONTS

Blink Blink Blink Blink OFF Blink

*******

TONER EMPTY

Undefined Undefined Undefined Undefined OFF Blink

WASTE TONER FULL

Undefined Undefined Undefined Undefined OFF Blink

FRONT TRAY ERROR

PRESS

RECOVERKEY

Undefined Undefined Undefined Undefined OFF Blink

COVER OPEN

Undefined Undefined Undefined Undefined OFF Blink

BELT NOT

INSTALLED

Page 51

This error is recovered when the box

toner Assy is installed. Printing is

suppressed until the box toner

assembly is installed.

Nothing

Please install the Oil pad Assy.

This error is recovered when the

RECOVER switch is pressed.

Expand RAM or reduce data.

Indicates that the box toner Assy has not been

installed.

Indicates that the Box toner Assy is near full.

Indicates that the Oil pad Assy has not been

installed.

Indicates that data overflowed the memory space.

- Too much print data in one page

- Too much macro data

- Too much DLL data

This error is recovered when the

RECOVER switch is pressed.

Change the setting of Receive

Buffer Size in the User Maintenance

more bigger then send the data from

the host or expand RAM.

This message is cleared when pa-

per is set in the tray or the cassette

assembly is mounted.

- Data overflow after compression of frame data

Indicates that the receive buffer was overflowed.

Indicates that the tray is empty or the cassette as-

sembly has not been installed.

mm...m: paper size (Letter, Executive, Legal 14,

The second tray (optional) cannot

use A6-size paper. The A6-size

paper is available to the first tray or

to the front feeder.

Legal 13, A4, A5, A6, or B5 size)

tttttt: Tray type (Tray 1, Tray 2, or Front)

Displayed when the second tray (optional) contains

A6-size paper.

This message is cleared when the

first tray is remounted correctly.

Normal operation

This message is cleared when the

specified paper is loaded from

manual feeder.

Indicates that the first tray is pulled out also when

the second tray (optional) is used.

Requests the user to load the specified paper by

message from manual feeder.

mm...m: paper size (Letter, Executive, Legal 14,

Legal 13, A4, A5, A6, or B5 size)

Undefined Undefined Undefined Undefined OFF Blink

Message K C M Y READY ATTENTION Trouble or Status Remedy

WASTE TONER BOX

NOT INSTALLED

Category LCD Status LED

Daily status

40985501TH Rev.1 51 /

Undefined Undefined Undefined Undefined Undefined ON

Undefined Undefined Undefined Undefined OFF Blink

WASTE TNR NRFULL

OIL P AD NOT

Undefined Undefined Undefined Undefined OFF Blink

INSTALLED

ERROR MEMORY

OVERFLOW

Buffer

Overflow

Undefined Undefined Undefined Undefined OFF Blink

ERROR RECEIVE

BUFFER OVERFLOW

Undefined Undefined Undefined Undefined OFF Blink

PAPER OUT

mmmmmmmmm tttttt

Tray Paper

Out

Undefined Undefined Undefined Undefined OFF Blink

CANNOT USE A6

Undefined Undefined Undefined Undefined OFF Blink

Undefined Undefined Undefined Undefined ON OFF

PAPER ON TRAY 2

TRAY 1 INSTALL

mmmmmmm MANUAL

P APER REQUEST

Paper

Request

Page 52

Normal operation

This message is cleared when pa-

per is set in the specified tray.

Requests the user to load the specified paper in the

tray .

mm...m: paper size (Letter, Executive, Legal 14,

Check the size of paper in the tray

or whether two or more paper

sheets are fed at a time.

When the cover is opened and

closed, this error is reset and print-

ing resumes. If this error occurs fre-

quently, go to 6.5.2.

Check the size of paper in the tray

or whether two or more paper

sheets were fed at a time. When

the cover is opened and closed, this

error is reset and printing resumes.

Legal 13, A4, A5, A6, or B5 size)

tttttt: Tray type (Tray 1, Tray 2, or Front)

Indicates that paper of the illegal size was fed from

the specified tray.

tttttt: Tray type (Tray 1, Tray 2, or Front)

Indicates that a paper jam occurred on the paper

feeding from the specified tray.

tttttt: Tray type (Tray 1, Tray 2, or Front)

If this error occurs frequently, go to

6.5.2.

Check the size of paper in the tray

or whether two or more paper

sheets were fed at a time. When

the cover is opened and closed, this

error is reset and printing resumes.

If this error occurs frequently, go to

6.5.2.

Open the cover and remove a pa-

per jam from the inside of the page

printer. When the cover is opened

and closed, this error is reset and

printing resumes. If this error oc-

curs frequently, go to 6.5.2.

The page printer recovers automati-

cally when resetting is complete.

Indicates that a paper coming out of the tray jammed

on the paper traveling printer.

tttttt: Tray type (Tray 1, Tray 2, or Front)

Indicates that a paper jammed on the way to the

exit.

Indicates that the OKI HSP interface card is being

reset.

Undefined Undefined Undefined Undefined OFF Blink

Message K C M Y READY ATTENTION Trouble or Status Remedy

mmmmmmmmm tttttt

PAPER REQUEST

Category LCD Status LED

Paper

Request

40985501TH Rev.1 52 /

Undefined Undefined Undefined Undefined OFF Blink

ERROR P APER SIZE

CHECK tttttt

Paper Size

Error

Undefined Undefined Undefined Undefined OFF Blink

PAPER INPUT JAM

CHECK tttttt

Paper Jam

Error

Undefined Undefined Undefined Undefined OFF Blink

PAPER FEED JAM

CHECK tttttt

Undefined Undefined Undefined Undefined OFF Blink

PAPER EXIT JAM

REMOVE THE PA-

PER

Undefined Undefined Undefined Undefined OFF Blink

OKI HSP I/F CARD

RESETTING

Interface

Error

Page 53

Notifies that the power supply LSI

has been reset due to noise, etc.

(process error)

Open cover and remove the paper.

Close cover to recover and proceed.

The page printer recovers from the

error when the RECOVER switch is

pressed. If this error occurs fre-

quently, replace the OKI HSP inter-

face card or the main board (PCR

PCB).

printer is powered on.

mode starts or the page printer received a

Indicates that Process error occurred.

Indicates that a fatal OKI HSP interface error has

occurred.

xx=10: Interface timeout

xx=20: Initialization failed 10 seconds after the page

xx=21: It takes 3 seconds or more before the RUN

Sets the default values in EEPROM

and it’ll be recovered automatically.

Simplify the pages.

Run Mode command in the power-on mode.

xx=22: HSP-PC communication error

Indicates that the ID number of EEPROM is invalid.

Indicates that the interpreter detected one of the

errors given below . The data coming after this error

is recovered until the end of the command. When

the reception of the command is completed, this

message is reset automatically.

is full.

- Invalid PostScript command

- The page is complicated and the vertical memory

Undefined Undefined Undefined Undefined OFF Blink

Message K C M Y READY ATTENTION Trouble or Status Remedy

Jam 001

Error

Category LCD Status LED

Interface

Error

40985501TH Rev.1 53 /

Undefined Undefined Undefined Undefined OFF Blink

ERROR HOST I/F

OKI HSP xx

Undefined Undefined Undefined Undefined OFF Blink

Undefined Undefined Undefined Undefined Blink OFF

EEPROM

RESETTING

ERROR POSTSCRIPT

Controller

Error

Page 54

Remedy

Turn on the power of the page printer again.

If this error still occurs, replace the program

ROM on the main board (PCR PCB) or the

main board itself.

When replacing the main board (PCR PCB),

demount the EEPROM chip from the old main

board and remount it on the new main board.

Turn on the power of the page printer again.

If this error still occurs, replace the main board

(PCR PCB).

When replacing the main board (PCR PCB),

demount the EEPROM chip from the old main

Indicates that an error was found

in the program ROM by the pro-

gram ROM check.

Indicates that an error was found

in the resident RAM by the resi-

dent RAM check.

board and remount it on the new main board.

Turn on the power of the page printer again.

If this error still occurs, replace the program

ROM on the main board (PCR PCB) or the

main board itself.

When replacing the main board (PCR PCB),

demount the EEPROM chip from the old main

board and remount it on the new main board.

Turn on the power of the page printer again.

If this error still occurs, replace the optional

ROM on the main board (PCR PCB) or the

main board itself.

When replacing the main board (PCR PCB),

demount the EEPROM chip from the old main

board and remount it on the new main board.

Check the connection of the option RAM. Turn

Indicates that an error was found

in the EEPROM by the EEPROM

check.

Indicates that an error was found

in the optional ROM by the optional

ROM check.

Indicates that an error was found

on the power of the page printer again. If this

error still occurs, replace the main board (PCR

PCB) or the option RAM.

When replacing the main board (PCR PCB),

demount the EEPROM chip from the old main

board and remount it on the new main board.

Do not use this SIMM because it is

incompatible with the machine.

in the optional RAM by the optional

RAM check.

Indicates that an error in the allocation

to CAS and data bus, which is detected

from the results of 1byte write/ 8bytes

read check on the optional RAM.

(nn)

Code

Undefined Undefined Undefined Undefined OFF Blink Details of error

Message K C M Y READY ATTENTION Trouble or Status Remedy

ERROR

Category LCD Status LED

Controller

Error

40985501TH Rev.1 54 /

Page 55

Remedy

This massage is cleared when the drum is

properly positioned or sensor lever which is

exchanged correspond to the LED color lights.

Check the connection between the main

board and the operation panel. Turn on the

power of the page printer again. If this error

still occurs, replace the cable, the main board

(PCR PCB) or the cover assembly operation

panel.

When replacing the main board (PCR PCB),

demount the EEPROM chip from the old main

Details of error

Indicates that Toner sensor is

abnormal when page counter is

below thirty.(alarm)

Indicates that a timeout occurred

on interface between the page

printer and the operator panel.

Check the connection between the main

board and the engine board. Turn on the

power of the page printer again. If this error

still occurs, replace the program ROM of the

main board (PCR PCB) or the engine board

(PX4 PCB), or the board itself.

When replacing the main board (PCR PCB),

demount the EEPROM chip from the old main

board and remount it on the new main board.

See Chapter 6.5.2

board and remount it on the new main board.

Indicates that a timeout occurred

on CU-PU interface.

Indicates that the printer overruns.

See Chapter 6.5.2

Yellow Image drum unit up/down

error

Magenta Image drum unit up/down

error

C. If this condition is not

See Chapter 6.5.2

Cyan Image drum unit up/down

error

Black Image drum unit up/down

error

satisfied, adjust the surrounding temperature,

otherwise satisfied, replace the sensor board

(RXM-PCB), junction board (PXF-PCB) or

Make sure that the surrounding temperature

stays -10 < t< 50

Environment temperature sensor

error

engine board (PX4-PCB).

(nn)

Code

Blink Blink Blink Blink OFF Blink

Undefined Undefined Undefined Undefined OFF Blink

Blink Blink Blink Blink OFF Blink

Undefined Undefined Undefined Undefined OFF Blink

Message K C M Y READY ATTENTION Trouble or Status Remedy

ERROR

Category LCD Status LED

Controller

Error

40985501TH Rev.1 55 /

Page 56

Remedy

Make sure that the relative humidity stays 0%

< h < 95%. (the subsequent contents are the

same as those of [DA])

Re-mount the waste toner box and re-power

on to ensure whether the alarm goes off or

not. If the alarm stays on, exchange waste

toner sensor, or replace the junction board

(PXF-PCB) or engine board (PX4-PCB).

Turn on the power of the page printer again.

If this error still occurs, replace the engine

board (PX4 PCB) or the front feed assembly.

See Chapter 6.5.2

Check the connection between the engine

board and the second tray board. Turn on

the power of the page printer again. If this

error still occurs, replace the program ROM

of the engine board (PX4 PCB), the junction

board (PXF PCB), the second tray board

(AOLT PCB).

When replacing the main board, demount the

EEPROM chip from the old main board and

remount it on the new main board.

Turn on the power of the page printer again.

If this error still occurs, replace the program

ROM of the engine board (PX4 PCB) or the

engine board.

When replacing the main board, demount the

EEPROM chip from the old main board and

remount it on the new main board.

Turn on the power of the page printer again.

If this error still occurs, replace the power

supply board (power-supply PCB).

Humidity sensor error DB

(nn)

Code

Waste-toner sensor error DC

Pinch roller up/down error DE

Fusing Unit Error

Fan Motor Error

Option status error 2 (Error on in-

terface between the engine board

and the second tray)

E0E1E8

SRAM error E9

PW-LSI error EA

Undefined Undefined Undefined Undefined OFF Blink Details of error

Message K C M Y READY ATTENTION Trouble or Status Remedy

ERROR

Category LCD Status LED

Controller

Error

40985501TH Rev.1 56 /

Page 57

Remedy

Turn on the power of the page printer again.

If this error still occurs, replace the program

ROM of the engine board (PX4 PCB) or the

engine board.

When replacing the main board, demount the

EEPROM chip from the old main board and

remount it on the new main board.

Turn on the power of the page printer again.

If this error still occurs, replace the EEPROM

of the engine board (PX4 PCB) or the engine

board.

When replacing the main board, demount the

EEPROM chip from the old main board and

remount it on the new main board.

Turn on the power of the page printer again.

If this error still occurs, replace the EEPROM

of the engine board (PX4 PCB) or the engine

board.

When replacing the main board, demount the

EEPROM chip from the old main board and

remount it on the new main board.

Turn on the power of the page printer again.

If this error still occurs, replace the program

ROM of the engine board (PX4 PCB) or the

engine board.

When replacing the main board, demount the

EEPROM chip from the old main board and

remount it on the new main board.

Turn on the power of the page printer again.

If this error still occurs, replace the program

ROM of the main board (PCR PCB) or the

main board.

When replacing the main board, demount the

EEPROM chip from the old main board and

remount it on the new main board.

Engine firmware lost control

(nn)

Code

EEPROM error (Timeout)

EEPROM error (Not Exist)

Engine ROM/RAM error EF

Monitor error (Double wait) F0

Undefined Undefined Undefined Undefined OFF Blink Details of error

Message K C M Y READY ATTENTION Trouble or Status Remedy

ERROR

Category LCD Status LED

Controller

Error

40985501TH Rev.1 57 /

Page 58

Remedy

Turn on the power of the page printer again.

If this error still occurs, replace the program

ROM of the main board (PCR PCB) or the

main board.

When replacing the main board, demount the

EEPROM chip from the old main board and

remount it on the new main board.

Turn on the power of the page printer again.

If this error still occurs, replace the program

ROM of the engine board (PX4-PCB) or the

engine board.

Monitor error (Argument error) F1

(nn)

Code

Engine background error F4

Undefined Undefined Undefined Undefined OFF Blink Details of error

Message K C M Y READY ATTENTION Trouble or Status Remedy

ERROR

Category LCD Status LED

Controller

Error

40985501TH Rev.1 58 /

Page 59

Remedy

If the error still occurs, replace the

main board (PCR PCB).

When replacing the main board,

demount the EEPROM chip from

the old main board and remount it

Turn on the power of the page printer

again. The error will be reset.

Details of error

TLB (Translation Lookaside Buffer) correc-

tion exception

TLB exception (Load or Instruction Fetch)

(nn)

Code

Indicates that the controller error has occurred.

020304

on the new main board.

TLB exception (Store)

Address error exception (Load or Instruc-

tion Fetch)

Address error exception (Store)

Bus error exception (Instruction Fetch)

Bus error exception (Data Load or Store)

System call exception

Break point exception

Reserved instruction exception

0506070809

0A0B0C0D0FB0B1

Co-processor disabled exception

Operation overflow exception

Trap exception

Floating-point exception

NMI: Hardware breakpoint

NMI: Write protect

Cache error C0

Undefined Undefined Undefined Undefined OFF Blink

Message K C M Y READY ATTENTION Trouble or Status Remedy

ERROR

CONTROLLER

nn-aaaaaaaa

Category LCD Status LED

Controller

Error

40985501TH Rev.1 59 /

Page 60

4.2 Troubleshooting Flowchart

A-1 PS NOT AVAILABLE.

• Is the PS-SIMM properly installed?

• No Exchange the PSIMMH with the PSIMML of SIMMs.

▼

• Yes See the items of ERROR 50?

A-2 ERROR POSTSCRIPT.

• See the items of ERROR 50?

A-3 ERROR MEMORY OVERFLOW.

• Dose the capacity of the installed memory correspond with that shown in the Menu Print page?

• Yes Replace the memory with a larger one than it.

▼

• No See the items of ERROR 50.

A-4 ERROR RECEIVE BUFFER OVERFLOW.

• See the items of ERROR.

A-5 OKI HSP I/F CARD RESETTING.

• Can the machine return to On-line mode in a few minutes?

• Yes No abnormality.

▼

• No Replace the HSP I/F CARD.

▼

• Can the machine recover to a normal state?.

▼

• No Replace the PCR board.

40985501TH Rev.1 60 /

Page 61

A-6 ERROR HOST I/F OKI HSP xx.

• Is the FU1 burnt?

• Yes Replace the FU1.

▼

• No Replace the R550 to R555.

▼

• Can the machine recover to a normal state?

• No Replace the MUPIS connector.

▼

• Can the machine recover to a normal state?

• No Replace the IC21 to IC26.

▼

• Can the machine recover to a normal state?

• No Replace the IIF

▼

• Can the machine recover to a normal state?

▼

• No Replace the PCR board.

B-1 ERROR 10

• Is the ROM inserted into its specified position?

• No Reinstall the ROM in place.

▼

• Yes Replace the ROM.

▼

• Can the machine recover to a normal state?

▼

• No Replace the PCR board.

B-2 ERROR 30.

• Replace R501 and / or R502.

▼

• Can the machine recover to a normal state?

• No Replace DRAM01 to DRAM04 and DRRAM11 to DRAM14.

▼

• Can the machine recover to a normal state?

• No Replace the IC5 to IC8, IC11 and IC12.

▼

• Can the machine recover to a normal state?

▼

• No Replace the PCR board.

40985501TH Rev.1 61 /

Page 62

B-3 ERROR 40.

• Replace the E2ROM1.

▼

• Can the machine recover to a normal state?

• No Replace the R566.

▼

• Can the machine recover to a normal state?

• No Replace the SIMM socket of the PSIMMH.

▼

• Can the machine recover to a normal state?

▼

• No Replace the PCR board.

B-4 ERROR 50.

• Is the PSIMM properly inserted in its specified position?

• No Reinstall the SIMM accurately.

▼

• Yes Replace the SIMM.

▼

• Can the machine recover to a normal state?

• No Replace the IC1 to IC4, IC9 and IC10.

▼

• Can the machine recover to a normal state?

▼

• No Replace the PCR board.

B-5 ERROR 60.

• Is the capacity/ access speed of the two SIMMs the same?

• No Install a SIMM for one of the pair with the same capacity/ access speed

▼

• Yes Are the SIMMs installed properly?

• No Reinstall the SIMM(s) in place.

▼

• Yes Replace the SIMM(s).

▼

• Can the machine recover to a normal state?

• No Replace the IC5 to IC8, IC11 and IC12.

▼

• Can the machine recover to a normal state?

as the othe one.

▼

• No Replace the PCR board.

40985501TH Rev.1 62 /

Page 63

B-6 ERROR 80.

• Replace the IC9.

▼

• Can the machine recover to a normal state?

• No Replace the IIF.

▼

• Can the machine recover to a normal state?

• No Replace the PANEL connector.

▼

• Can the machine recover to a normal state?

• No Replace the PCR board.

▼

• Can the machine recover to a normal state?

• No Replace the cable Assy of the Operator Panel.

▼

• Can the machine recover to a normal state?

▼

• No Replace the Operator Panel Assy.

B-7 ERROR 82.

• Replace the IC8 and/ or IC20.

▼

• Can the machine recover to a normal state?

• No Replace the IIF.

▼

• Can the machine recover to a normal state?

• No Replace the PU connector.

▼

• Can the machine recover to a normal state?

• No Replace the PCR board.

▼

• Can the machine recover to a normal state?

▼

• No Replace the PX4.

B-8 ERROR 92.

• Replace the PCR board.

B-9 ERROR F4.

• See the items of ERROR 60.

B-10 ERROR COTROLLER xx.

• Replace the PCR board.

40985501TH Rev.1 63 /

Page 64

C-1 The Operator Panel displays nothing with the upper line blackened.

• Replace the IRST.

▼

• Can the machine recover to a normal state?

• No Replace the PANEL connector.

▼

• Can the machine recover to a normal state?

• No Replace the cable Assy of the Operator Panel.

▼

• Can the machine recover to a normal state?

• No Replace the Operator Panel Assy.

▼

• Can the machine recover to a normal state?

• No Replace the PCR board.

▼

• Can the machine recover to a normal state?

• No Replace the PX4 board.

▼

• Can the machine recover to a normal state?

▼

• No Replace the power supply.

C-2 The Operator Panel displays an abnormal message.

• See the items of ERROR 80.

C-3 The machine refuses the operations to switching on the Operator Panel.

• Replace the R587.

▼

• Can the machine recover to a normal state?

▼

• See items of ERROR 80.

40985501TH Rev.1 64 /

Page 65

D-1 No receiving trough the centronics I/F.

• Replace the R595, R664, R594, R597, R663, R596, R648 and R55.

▼

• Can the machine recover to a normal state?

• No Replace the C3 and/ or C52.

▼

• Can the machine recover to a normal state?

• No Replace the IC16 and IC17.

▼

• Can the machine recover to a normal state?

• No Replace the CENT connector.

▼

• Can the machine recover to a normal state?

• No Replace the IIF.

▼

• Can the machine recover to a normal state?

• No Replace the PCR board.

40985501TH Rev.1 65 /

Page 66

5. CIRCUIT DIAGRAM

Figure 5-1(1/15~15/15) Main Controller PCB (PCR-PCB, Rev.2, 3) Figure 5-2(1/3~3/3) Operation Panel PCB (PCO-PCB, Rev.2) Figure 5-3(1/1) PostScript SIMM PCB (Used Flash ROM) (FSL-PCB, Rev.1) Figure 5-4(1/1) PostScript SIMM PCB (Used OTP or Mask ROM) (MSM-PCB, Rev.1) Figure 5-5(1/9~9/9) Engine Controller-PCB (PX4-PCB, Rev.2) Figure 5-6(1/2~2/2) I/F-PCB (PXF-PCB, Rev.4) Figure 5-7(1/1) Head I/F-PCB (PD6-PCB, Rev.3) Figure 5-8(1/2~2/2) Front Sensor-PCB (PXM-PCB, Rev.3) Figure 5-9(1/2~2/2) Rear Sensor-PCB (PXL-PCB, Rev.3) Figure 5-10(1/1) Cassette Switch-PCB (PXC-PCB, Rev.3)

40985501TH Rev.1 66 /

Page 67

123 45678 9XY

(PCR-1/15) Rev. 2, 3

Figure 5-1 Main Control PCB

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Page 68

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(PCR-2/15) Rev. 2, 3

Figure 5-1 Main Control PCB

40985501TH Rev.1 68 /

Page 69

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(PCR-3/15) Rev. 2, 3

Figure 5-1 Main Control PCB

40985501TH Rev.1 69 /

Page 70

123 45678 9XY

(PCR-4/15) Rev. 2, 3

Figure 5-1 Main Control PCB

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Page 71

123 45678 9XY

(PCR-5/15) Rev. 2, 3

Figure 5-1 Main Control PCB

40985501TH Rev.1 71 /

Page 72

123 45678 9XY

(PCR-6/15) Rev. 2, 3

Figure 5-1 Main Control PCB

40985501TH Rev.1 72 /

Page 73

123 45678 9XY

(PCR-7/15) Rev. 2, 3

Figure 5-1 Main Control PCB

40985501TH Rev.1 73 /

Page 74

123 45678 9XY

(PCR-8/15) Rev. 2, 3

Figure 5-1 Main Control PCB

40985501TH Rev.1 74 /

Page 75

123 45678 9XY

(PCR-9/15) Rev. 2, 3

Figure 5-1 Main Control PCB

40985501TH Rev.1 75 /

Page 76

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(PCR-10/15) Rev. 2, 3

Figure 5-1 Main Control PCB

40985501TH Rev.1 76 /

Page 77

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(PCR-11/15) Rev. 2, 3

Figure 5-1 Main Control PCB

40985501TH Rev.1 77 /

Page 78

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(PCR-12/15) Rev. 2, 3

Figure 5-1 Main Control PCB

40985501TH Rev.1 78 /

Page 79

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(PCR-13/15) Rev. 2, 3

Figure 5-1 Main Control PCB

40985501TH Rev.1 79 /

Page 80

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(PCR-14/15) Rev. 2, 3

Figure 5-1 Main Control PCB

40985501TH Rev.1 80 /

Page 81

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(PCR-15/15) Rev. 2, 3

Figure 5-1 Main Control PCB

40985501TH Rev.1 81 /

Page 82

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0.1u 25

200 1/10W

(PCO-1/3) Rev. 2

Figure 5-2 Operation Panel PCB

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0.1u 25

7.5K 7.5K 7.5K 7.5K 7.5K 7.5K

91K

10K

LCD

(PCO-2/3) Rev. 2

Figure 5-2 Operation Panel PCB

40985501TH Rev.1 83 /

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0.1u 25

LCD

1234567891011121314151617181920222324252627282930313233343536373839404142

(PCO-3/3) Rev.2

Figure 5-2 Operation Panel PCB

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(FSL-1/1) Rev. 1

Figure 5-3 PostScript SIMM PCB

40985501TH Rev.1 85 /

Page 86

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4443233435363738394041424567891011121433231332

20191817161514131211109876543210

D15-P (01XD)

D14-P (01XD)

D13-P (01XD)

D12-P (01XD)

D11-P (01XD)

D10-P (01XE)

D9-P (01XE)

D8-P (01XE)

D7-P (01XE)

D6-P (01XE)

D5-P (01XE)

D4-P (01XE)

D3-P (01XE)

D2-P (01XE)

D1-P (01XE)

D0-P (01XE)

A19

A18

A17

A16

A15

A14

A13

A12

A11

A10A9A8A7A6A5A4A3A2A1A0CEOE

BYTE

VCC

VSS1

VSS2

Q15/A1

Q14

Q13

Q12

Q11

Q10

Q9Q8Q7Q6Q5Q4Q3Q2Q1

312927252220181630282624211917

ROM0

23C1610SOP

4443233435363738394041424567891011121433231332

D31-P (01XC)

D30-P (01XC)

D29-P (01XC)

D28-P (01XC)

D27-P (01XC)

D26-P (01XC)

D25-P (01XC)

D24-P (01XC)

D23-P (01XC)

D22-P (01XD)

D21-P (01XD)

D20-P (01XD)

D19-P (01XD)

D18-P (01XD)

D17-P (01XD)

D16-P (01XD)

A19

A18

A17

A16

A15

A14

A13

A12

A11

A10A9A8A7A6A5A4A3A2A1A0CEOE

BYTE

VCC

VSS1

VSS2

Q15/A1

Q14

Q13

Q12

Q11

Q10

Q9Q8Q7Q6Q5Q4Q3Q2Q1

312927252220181630282624211917

20191817161514131211109876543210

TER1

A20

A19

A18

A17

A16

A15

A14

A13

A12

A11

A10A9A8A7A6A5A4A3A2A1A0

DQ31

DQ30

DQ29

DQ28

DQ27

DQ26

DQ25

DQ24

DQ23

DQ22

DQ21

DQ20

DQ19

DQ18

DQ17

DQ16

DQ15

DQ14

DQ13

DQ12

DQ11

DQ10

DQ9

DQ8

DQ7

DQ6

DQ5

DQ4

DQ3

DQ2

DQ1

DQ0

BSY3

BSY2

BSY1

BSY0

CE3

CE2

CE1

CE0OEWE

EEPDAT

EEPCS

EEPCLK

VCC1

VCC2

VCC3

VSS1

VSS2

VSS3

TER1

(017A) D31-P

(017A) D30-P

(017A) D29-P

(017A) D28-P

(017B) D27-P

(017B) D26-P

(017B) D25-P

(017B) D24-P

(017B) D23-P

(017B) D22-P

(017B) D21-P

(017B) D20-P

(017B) D19-P

(017B) D18-P

(017B) D17-P

(017B) D16-P

(013A) D15-P

(013A) D14-P

(013A) D13-P

(013A) D12-P

(013B) D11-P

(013B) D10-P

(013B) D9-P

(013B) D8-P

(013B) D7-P

(013B) D6-P

(013B) D5-P

(013B) D4-P

(013B) D3-P

(013B) D2-P

(013B) D1-P

(013B) D0-P

193234314028181716151413124142434445476671864226242220

TER1

55535149656361

TER1

9753272523

TER1

56545250646260

TER1

706968

TER1

383736

TER1

291133

TER1

103059

TER1

13972

NC1CSVCC

GND1

NC2

36185

ROM1

23C1610SOP

E2ROM

93C66

(MSM-1/1) Rev. 1

Figure 5-4 PostScript SIMM PCB

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(PX4-1/9) Rev. 2

Figure 5-5 Engine Controller PCB

40985501TH Rev.1 87 /

Page 88

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(PX4-2/9) Rev. 2

Figure 5-5 Engine Controller PCB

40985501TH Rev.1 88 /

Page 89

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(PX4-3/9) Rev. 2

Figure 5-5 Engine Controller PCB

40985501TH Rev.1 89 /

Page 90

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(PX4-4/9) Rev. 2

Figure 5-5 Engine Controller PCB

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Page 91

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(PX4-5/9) Rev. 2

Figure 5-5 Engine Controller PCB

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Page 92

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(PX4-6/9) Rev. 2

Figure 5-5 Engine Controller PCB

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Page 93

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(PX4-7/9) Rev. 2

Figure 5-5 Engine Controller PCB

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Page 94

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(PX4-8/9) Rev. 2

Figure 5-5 Engine Controller PCB

40985501TH Rev.1 94 /

Page 95

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(PX4-9/9) Rev. 2

Figure 5-5 Engine Controller PCB

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Page 96

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(PXF-1/2) Rev. 4

Figure 5-6 I/F PCB

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Page 97

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(PXF-2/2) Rev. 4

Figure 5-6 I/F PCB

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Page 98

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(PD6-1/1) Rev. 3

Figure 5-7 Head I/F PCB

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Page 99

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(PXM-1/2) Rev. 3

Figure 5-8 Front Sensor PCB

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Page 100

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(PXM-2/2) Rev. 3

Figure 5-8 Front Sensor PCB

40985501TH Rev.1 100 /