OKI 12i Troubleshooting Manual

OKIP AGE 12i LED Page Printer

T roubleshooting Manual with Component Parts List

ODA/OEL/INT

All specifications are subject to change without notice.

OKIDATA is a registered trademark of Oki America, Inc. OKIDATA est une marque déposée de Oki America, Inc.

CONTENTS

1. OUTLINE.........................................................................................................1

2. TOOLS............................................................................................................1

3. CIRCUIT DESCRIPTION................................................................................2

4. TROUBLESHOOTING..................................................................................36

5. CIRCUIT DIAGRAM......................................................................................67

6. COMPONENT PARTS LIST

1. OUTLINE

This manual has been written to provide guidance for troubleshooting of the OKIPAGE 12i Printer (primarily for its printed circuit boards), based on the assumption that the reader has a thorough knowledge concerning the printer. Read the maintenance manual for this printer, 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. Thus, the objects to be locally repaired as a result of troubleshooting are switches and fuses.

2. Replacement of CPU (MHM2029) is not recommended. If CPU is found 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 Extension cord kit Oscilloscope Soldering iron

P/N: 40581901 Frequency response 100 MHz or higher A slender tip type, 15-20 watts

- 1 -

3. CIRCUIT DESCRIPTION

3.1 Outline

The main control board 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 engine and the operator panel. Its block diagram is shown in Fig. 3-1 and 3-2.

(1) Reception control

OKIPAGE 12i Printer can be equipped with two I/F ports by adding an RS232C I/F or network I/F option board in addition to the Centronics I/F on the main control board. Either of the two I/F ports which receives data first can be used automatically. The other I/F port outputs a busy state signal. The parallel I/F port can specify the following item when set by the control panel:

I-PRIME: Enabled/Disabled

The serial I/F port can specify the following item when set by the control panel:

Flow control : DTRHI/DTR LO/XONXOFF/RBSTXON Baud rate : 300/600/1200/2400/4800/9600/19200 (Baud) Data bit : 7/8 (bits) Minimum busy time : 200/1000 (ms) Parity : NONE/ODD/EVEN

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

(2) Command analysis processing

The OKIPAGE 12i printers support PCL6 (Hewlett Packard LJ6P compatible). 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.

- 2 -

1MB Memory Board

(Option)

RS232C Interface Board

or

(Option)

Network Interface Board

or

(Option)

Main Control Board

Program & Font ROM

16MB Mask ROM

EEPROM

Centronics parallel I/F

7407

+8V -8V 0V +5V+38V

Reset circuit

For optional board

DATA

BUS

(32bit)

1 Chip CPU

Resident RAM

1M x 16 DRAM

(4MB)

Registration motor

HEAT ON

Drum motor &

drive circuit

FAN Driver

Multi-Purpose

Feeder (Option)

High Capacity

Second Paper

Feeder (Option)

Operation Panel

Drum Motor

MMRegistration Motor

FAN

FAN ALM

LED Head

Power Supply Board

Inlet sensor 1

Inlet sensor 2

Paper sensor

Outlet sensor

Paper out sensor

Toner low sensor

Cover

open

switch

Low voltage

generation circuit

LSI

AC

transformer

Charge roller

Transfer roller

High voltage

generation

circuit

Fusing temperature

control circuit

Heater drive

circuit

Filter circuit AC IN

Developping

roller

Toner supply

roller

Cleaning

roller

Thermistor

Heater

Figure 3-1 Block Diagram

- 3 -

A2 to A23

D0 to D31

CAS0 to CAS3

ALS244ALS244ALS244

DRAM

1M Byte

SIMM1

DRAM SIMM

PD2, 3

BSY

SIMM2

Flash SIMM

ALS244

OPTION CONNECTOR

RAS2 to RAS4 ORE, RD, WR

CS3, EEPCS, EECLK EEPDAT IOS1

Figure 3-2 Memory Expansion Board Block Diagram (Option)

RAS2 ORE WR

RAS3, 4 WR

RD WR

- 4 -

A2 to A23

D0 to D31

CAS0 to CAS3

ALS244ALS244

SIMM1

DRAM SIMM

PD2, 3

BSY

SIMM2

Flash SIMM

ALS244

OPTION CONNECTOR

RAS2 to RAS4 ORE, RD, WR

CS3, EEPCS, EEPCLK EEPDAT IOS1

TXD, RST, DTR

ALS244

Figure 3-3 RS-232C Serial Interface Board Block Diagram (Option)

RAS3, 4 WR

RD WR

RXD

RS-232C CONNECTOR

75188

- 5 -

A2 to A23

D0 to D31

ALS244ALS244ALS244

PD2, 3

ALS244

CAS0 to CAS3

OPTION CONNECTOR

RAS2 to RAS4 ORE, RD, WR

CS3, EEPCS, EEPCLK EEPDAT IOS1

CS2 IOS0

INT2, DMARQ

Figure 3-4 Network Interface Board Block Diagram (Option)

SIMM1

DRAM SIMM

RAS3, 4 WR

RD WR

BSY1

SIMM2

Flash SIMM

RD WR

BSY2

CS2

Flash ROM

1M Byte

LZ9FF22

CS 8900

Puls Traus

10 base T CONNECTOR

- 6 -

3.2 CPU and Memory

(1) CPU (MHM2029-004K)

CPU core RISC CPU (MIPS R3000 compatible) CPU clock 20.2752 MHz Internal CPU CLK 40.5504 MHz

(2) Program and Font ROMs

ROM capacity 16M bytes (64M bit mask ROM two pieces) ROM type 64M bits (4M x 16 bits) Access time 100 ns

(3) Resident RAM

RAM capacity 4M bytes (16-Mbit D-RAM two pieces) RAM type 16M bits (1M x 16 bits) Access time 60 ns

(4) Option Board

RAM capacity (chip) 1M byte RAM type (chip) 4M bits D-RAM two pieces Memory Expansion Board only Access time (chip) 60 ns

SIMM 1 socket 2, 4, 8, 16 or 32M bytes, 72 pin DRAM SIMM, 60 to 100 ns SIMM 2 socket Flash SIMM (72 pin)

}

Flash ROM capacity (chip) 4 M byte or 8 M byte Flash ROM type (chip) 8M bits Flash ROM four pieces or 16M bits Flash ROM four

pieces.

Access time (chip) 90 ns The block diagram of CPU and memory circuit is shown in Fig. 3-3. The timing chart of CPU and memory ciucuit is shown in Fig. 3-4.

- 7 -

CPU

CS0 CS2 CS3 CS4

RAS0 RAS1 RAS2 RAS3 RAS4 RAS5

Option board

A00 to A25

D00 to D32

CS0

RD

IC2, IC3

Mask ROM

(4M x 16 bits)

2 pieces

CAS0 CAS1 CAS2 CAS3

RAS0

RD/WR

CAS0, 1, 2, 3

RAS2, 3, 4, 5CAS0, 1, 2, 3 RD/WR

RAS2 WR

CAS0,1,2,3

RAS3, 4 WR

CAS0,1,2,3

CS3, RD/WR

IC4, IC5

DRAM

(1M x 16 bits)

2 pieces

Main control board

Option board

DRAM

1M Byte

(Memory Expansion Board only)

SIMM 1

DRAM SIMM

SIMM 2

Flash SIMM

Flash ROM

CS2, RD/WR

1M byte

(Network Board only)

Figure 3-8 Block Diagram of CPU & Memory Circuit

- 8 -

DATA

VARIDVARID

T2 -7 sysclk

T1 -2.5 sysclk

42.5

T3 -1 sysclk

46.0

T2 -7 sysclk

(DRAS0N~ 5N)

T4 -3.5 sysclk

32.0

T2 -7 sysclk

31.0

T2 -7 sysclk

T3 -1 sysclk

32.0

CPU detects the type of SIMM memory installed on the memory

expansion board, and sets the suitable timing as shown in the left

handside table.

Due to this, T1~T4 values shown above vary depending on the type

of SIMM memory being used.

4 sysclk

3.5 sysclk

1 sysclk

7 sysclk

8 sysclk

3 sysclk

2.5 sysclk

T1 T2 T3 T4

3.5 sysclk

1 sysclk

7 sysclk

2.5 sysclk

0 12.33 24.66 36.99 49.32 61.65 73.98 86.31 98.64 110.97 123.30 (ns)

(40.5504 MHz)

SYSCLK

A00-A25-P

DRAS0~5-N

DCAS0~3-N

RD-N

Figure 3-9 Timing Chart of CPU & Memory Circuit

- 9 -

TIME

SIMM speed

D00~D31-P

60 ns

No SIMM

70 ns

80 ns

100 ns

3.3 Reset Control

When power is turned on, a CLRST-N signal is generated by the rising sequence of +38V and +8V power supply.

D2 (15V)

+38V

+38V +8V

Power ON

+38V

IC10-6

IC10-5

5 6

+8V

+ –

IC10

+5V

172

7

Power OFF

CPU

To Option Board

IC10 Input

CLRST-N

+5V

+8V

- 10 -

3.4 EEPROM Control

The BR93LC66ARF E2 is an electrical erasable/programmable ROM of 256 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 (SSTXD-P) in serial transmission synchronized with a clock signal from the CPU. The EEPROM operates in the following instruction modes

3

DI DO

4

1

CS

CPU

SSTXD-P

154

EEPRMCS0-P

150

SK

EEPRMCLK-P

2

151

The EEPROM operates in the following instruction modes

Instruction Start bit Operation Address Data

code

Read (READ) 1 10 A7 to A0 Write Enabled (WEN) 1 00 11XXXXXX Write (WRITE) 1 1 01 A7 to A0 D15 to D0 Write All Address (WRAL) 1 00 01XXXXXX D15 to D0 Write Disabled (WDS) 1 00 00XXXXXX Erase 1 11 A7 to A0 Chip Erasable (ERAL) 1 00 10XXXXXX

CS

SK

DI

DO

Write cycle timing (WRITE)

CS

SK

DI

DO

12 4 1112 27

10 1

HIGH-Z

Read cycle timing (READ)

12

110

HIGH-Z

A7 A6 A1 A0 D15 D14 D1 D0

4

A7 A6 A1 A0

11 12

D15 D14 D1 D00 D15 D14

- 11 -

Min. 2 µs

STATUS

Max. 500 ns

BUSY READY

Max. 10 ms

27 28

3.5 Centronics Parallel Interface

The CPU sets a BUSY-P signal to ON at the same time when it reads the parallel data (PDATA1P to PDATA 8-P) from the parallel port at the fall of PSTB-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.

87, 88, 91 to 96

97

85

86

CPU

83

81

79

80

82

84

PDATA1-P to PDATA8-P

PSTB-N PBUSY-P

IC11

PACK-N

PPE-P

PSEL-P

PERROR-N

PINIT-N

PSELIN-N

PAUTOFD-N

+5V

2 to 9

1

11

10

12

13

32

31

36

14

CENT

DATA8-P

to

DATA1-P STB-N

BUSY-P

ACK-N PE-P

SEL-P

FAULT-N

IPRIME-N SELIN-N AUTOFEED-N

PARALLEL DATA (DATA BITs 1 to 8)

DATA STOROBE

BUSY

ACKNOWLEDGE

0.5 µs min.

0.5 µs max.

5V

0 min.

0.5 µs to 10 µs

3.9k

0

+5V

18

Ω

0.5 µs min.

0 min.

- 12 -

3.6 Operator Panel Control

The operator panel consists of the following circuits.

OLCC-2

Main control board

SSTXD-P 154

SSRXD-P

158

CPU

SSCLK-N

153

SSLD-N

152

PANEL

3 4

6

1

Flexible

Cable

CN1

BU6152S

4

3

1 6

LSI

DB4~DB7 RS

R/W E

44780 LCD Control Driver

Zebra Rubber

LCD

(1) BU6152S (LSI)

This LSI is connected to a clock synchronous serial port of the CPU. It controls switch data

input, LED data output and LCD data input/output according to the commands given by the

CPU. The CPU sends the 2-byte (16-bit) command (SSTXD-P) together with the shift clock

signal (SSCLK-N) to the LSI and then makes a predetermined input/output control if the

command decoded by the LSI is found to be a normal command.

LED

On receiving a command sent from the CPU, the LSI, synchronizing with the serial clock of

the command, returns a 2-byte command response to the CPU.

SSTXD-P

SSCLK-N

SSRXD-P

SSLD-N

bit 0 bit 7

Command (first)

bit 0

Command response (first) Command response (second)

bit 7

Command (second)

- 13 -

3.7 LED Head Control

An LED correcting head, which is capable of correcting the illumination of the LED for each dot, is being used in this printer. LED illumination correction function of 16 steps is carried out by using an EEPROM which is installed in the LSI that maintains the LED illumination correction values, and an LED correction drivers (MSM6731BWAF or MSM6732BWAF) together as a pair.

The LED correcting head consists of the correction control LSI (MSM6730WAF), LED drivers (MSM6731BWAF or MSM6732BWAF), and an LED array.

From

CPU

STRB1-N STRB2-N STRB3-N STRB4-N

LOADI

CLOCKI

DATAI0 DATAI1 DATAI2 DATAI3

MSM6730

WAF

EEPROM

Correction

Values

LED Driver

MSM6732BWAF

LED Array

LED LED LED LED LED LED LED

LED Driver

MSM6731BWAF

Printing and correction data combined signal line Correction data signal line

LED Driver

MSM6731BWAF

LED Driver

MSM6732BWAF

- 14 -

CLOCKI

LOADI

DATAI3~0

STRB1I-N

STRB2I-N

STRB3I-N

STRB4I-N

Normal Mode Printing Timing Chart

First line printing data sent Second line printing data sent

First line printing

The printing operation is carried out in the following sequence. First, the printing data DATAI3 through DATAI0 are stored, sequentially shifted, in the shift registers of the LED drivers, by the printing data synchronous clock, CLOCKI. Then the printing data stored in shift registers are latched by the high level pulse of LOADI. The latched printing data turns the LEDs on by STRB1IN through STRB4I-N and actuates printing.

- 15 -

3.8 Motor Control

(1) Registration and main (drum) motors

A registration motor and a drum motor are driven by means of control signals from the CPU

and a driver IC.

Main Control Board

CPU A2918SW

132

131

127

134

133

RMON-N

3

(2) Drum motor

DMPH1-P

DMPH2-P

DMON1-N

RMPH1-P

RMPH2-P

13

8

7

14

26

MTD2005F

17

27 16

IC9

IC8

+38V

DMPH1-N 1

1

DMPH1-P 2

17

DMPH2-N 3

2

DMPH2-P 4

4

RMPH1-P 1

3

RMPH1-N 2

7

RMPH2-P 4

8

RMPH2-N 3

12

DM

Main (Drum) Motor

M

RM

Registration Motor

M

DMON1-N

DMPH1-P

DMPH2-P

T0

T1 T2 T3

Operation at normal speed: T0 to T3 =0.82 ms

- 16 -

(3) Registration motor

RMON-N

RMPH1-P

RMPH2-P

T0 T1 T2 T3

Rotation

Stop

Forward rotation Hopping drive

Operation at normal speed: T0 to T3 = 0.82 ms

Reverse rotation Registration roller drive

(4) Drive control

Time T0 to T3 determines the motor speed, while the difference of phase direction between

phase signals DMPH1-P and DMPH2-P (RMPH1-P and RMHPH2-P) determines the

rotation direction. DMON1-N and RMON-N signals control a motor coil current. According to

the polarity of the phase signal, the coil current flow as follows:

1) +38V → SW → motor coil → SW → resistor → earth, or,

2) +38V → SW → motor coil → SW → resistor → earth

The voltage drop across the resistor is input to comparator, where it is compared with a

reference voltage. If an overcurrent flow occurs, a limiter operates to maintain it within a

certain fixed amount of current.

- 17 -

3.9 Fuser Temperature Control

For the temperature control by heater control, the variation in the resistance of the thermistor is A/D converted in IC2 and the resultant digital value is read and transferred to the CPU. The CPU turns on or off the HEATON-N signal according to the value of the signal received from IC2 to keep the temperature at a constant level. 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 abnormally 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 when the resistance of the thermistor is detected to be exceeding the predetermined value.

Main Control BoardPower Supply Board

Thermistor

Heater

TH1

TH2

CN2

1 2 PC1

5V

Thermistor

Breakdown

Detector

Circuit

IC2 CPU

Power

27

Abnormally

High

Temperature

Detection

Circuit

Supply

Interface

ACIN

20

HEATON-N

116

5V

IC11

1

0C

2

- 18 -

The temperature control is described below.

Vt

Temperature

˚C

V2

V1

ON OFF ON OFF ONHEATON-N

V2 176˚C V1 175˚C

* The values V1 and V2 vary according to setting mode.

(Standard temperature)

When Vt rises to V2 or more, the heater is turned of (by setting HEATON-N signal to LOW). When Vt drops to V1 or less, the heater is turned on (by setting HEATON-N signal to HIGH). In this way, the temperature can be kept within the predetermined range.

- 19 -

For heater breakdown detection, the heater must first be turned on. When a temperature rise which corresponds to the switching on of the heater does not occur, then a heater breakdown is detected. To shorten the breakdown detection time, the following circuit is used. Immediately after the power is turned on, the thermistor is checked and THERM-CMP signal is turned on to turn the resistor Q6 on. The reading resolution is increased through the variation of the thermistor resistance value.

If, for whatever reason, temperature control fails and the temperature rises abnormally, the abnormal high temperature detection circuit shown below forcibly cuts the power supply to the fuser.

5V

Thermistor

From CPU

Thermistor Breakdown Detection Circuit

R24

1.5k

Q6

THERM-CMP

Abnormal High Temperature Detection Circuit

+5V +5V

R26

1k

Ω

IC4

R28 1k

Ω

R25

Ω

100k

Ω

+

324

R27

1.8k

Ω

–

Q7

IC2 A/D

Converter

HEAT-N0

To PC1

- 20 -

3.10 Fan Motor Control

The stop/rotation of the fan motor is controlled by FANON1-P and FANON2-N signals. When the fan motor rotates normally, FANALM-P signal generated in the hole element built in the fan motor is input to the CPU.

FANON1-P

109

5V

CPU

FANON2-N

126

FANALM-N

110

R550

38V

R556

0V

R2

IC10

TR503

8VR

339/2901

0V

5V

R546

38V

R561

3

0V

TR501

R560

TR504

FAN

1

TR502

3

D1

1

D503

1

2

3

0V

Fan Motor

M

FANON1-P

H H

L

FANON2-N

L H X

Fan motor rotation Normal speed Half speed STOP

FANON1-P

FANALM-P

0.7 sec max

FAN MOVE

Lock

Fan motor start: Initial request, heater on, print start request Fan motor stop: • The motor immediately stops when an engine error or a fan error occurs.

• The motor stops 0 second or 8 minutes after the occurrence of a paper jam, size error, or fuse error.

• The motor stops in the power save mode as below.

Main (drum) motor

ON

Heater control

OFF

OFFON

Fan motor

Heater

hold time

8 min. or

0 sec.

Rotation state

- 21 -

30 sec.

Stop state

3.11 Cover Open

When the cover is opened, a cover open microswitch is opened. This makes a CVOPN-N signal low, thereby the CPU detects the open state. Furthermore, opening the cover stops applying a +5V power to the high voltage power supply unit, resulting in stopping all high voltage outputs.

Main Control Board

CPU

+5V

CVOPN-N

0V

Power Supply Board

+5V

125

Cover close Cover open

CVOPN-N

Cover Open Microswitch

+5V

Low Voltage

Power

Supply Unit

High

Voltage

Power Supply

Unit

High

voltage

output

- 22 -

3.12 Power Supply Board

(1) Low voltage power supply

An AC power from an inlet is input to a transformer via fuses, AC switch and noise filter and then lowered to a 32 VAC power and a 10 VAC power. The 32 VAC power is converted to a +30 VDC output through a rectifying/smoothing circuit. A +5 VDC output is derived from the resultant +38 VDC power through a regulation circuit. The 10 VAC power is converted to a +8 VDC output and a -8 VDC output through a rectifying/smoothing circuit.

Power supply board

ACIN

FG N

Filter

Circuit

Fuse Ratings

AC Input

Fuse

F1 F2 F3

120 V 230 V

125 V 6.3 A 125 V 1.6 A 125 V 3.15 A

250 V 5 A – 250 V 2.5 A

(2) High voltage power supply

The +5 VDC power supplied to the high voltage power supply unit via the cover open microswitch as source voltage. The high voltage power supply unit supplies necessary voltage for electro-photography print to output terminals CH, DB, SB, TR, and CB according to a control signal from the CPU. The table on the next page shows the relationship between control signals and high voltage outputs.

CN1 CN2

Thermal Fuse1

2

AC Transformer

1, 2

3, 4

6

5

F3F2F1L

+5V

Smoothing

Stabilizing

±

8V

Rectifying/

Smoothing

Circuit

+38V

Circuit

+5V

Circuit

+8 V 24

-8 V 22

+3.3 V

Generating

Circuit

CN3

+38 V 17, 18

+5 V 11, 12 0 V 9, 15, 16

13, 14 +3.3 V

CPU

SCLK SQCR DATA IN DATA OUT

TRSEL 3 TRSEL 4 TRSEL 5

- 23 -

Cover Open Switch

High Voltage

Power Supply

Unit

CH DB SB TR CB

(3) Sensor control

Main Control Board

7

6

8

IC2

4

3

5

PSOUT-N

WRSNS-N

PAPER-N

PSIN1-N

TNRSNS-N

PSIN2-N

Power Supply Board

+5V

PS1

PS2

PS4

PS3

PS6

PS5

Sensor signal

OFF

ON

TransparentShield

- 24 -

(4) 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 (IC2) and outputs high-frequency pulses to the corresponding high-voltage generating circuits through pins 11, 12, 13, 14 and 15 of LSI (IC2). It supplies +5V to each high-voltage generating circuit as the source voltage. When the cover is open, the supply of +5V is interrupted to interrupt all the high-voltage outputs. The relationship between the high-frequency pulse output pins and the high-voltage outputs is shown in the following table.

Power Supply CircuitMain Control Board

CPU

Power supply interface

IC2

LSI

13

15 11

14

+5V

DB

CB

TR

SB

SB DB

CB

TR

High-voltage

outputs

High

-frequency pulse output pins

11

12

13

14

15

SB

0V

DB

+300V

-500V -265V

CB

+400V

-1.35kV

TR

+1.2kV

-1.1kV

12

CH

-1.3kV

CH

Remarks

TRSEL 3: Hi-Z TRSEL 5: L

TRSEL 3: L TRSEL 5: Hi-Z

Part with slant line: no output

- 25 -

3.13 Option Tray Control

The kinds of option trays, High capacity Second Paper Feeder and Multi purpose Feeder can be connected to the printer. The trays are distinguished by two digit ID numbers.

The option trays and the printer communicate with each other through bi-directional clock synchoronized serial interface. The printer always sends a command first, then each option tray interpret it. Because the command contains an ID, the selectes option tray takes approriate actions, then sends back a reply. The command and reply are transmitted back and forth on OPTSD-P signal line by synchronizing OPTSCLK-N clock signal which is sent by the printer. The printer knows the timing when it outputs the clock for the reply by sensing OPTSDR-N signal which is turned to zero by the option tray when it is ready for the reply.

The option tray’s paper feeding action is triggered by a command sent by the printer. When the tray delects a signal on OPTPSIN-N signal line, which indicates the paper reaches a input sensor in the printer, the tray stops the paper feeding after carrying out the paper feeding according to the predetermined steps which have been downloaded from the printer at power-up time.

Status of the option trays such as no paper cassette, paper out and cover open, are infoemed to the printer though a reply in response to a status inquiry command.

- 26 -

Main Control board

CPU

3 2 4 1

PU2ND TRAY

OPTSD-P

OPTSCLK-N

OPTSDR-N

OPTSIN-N

TQSB-2 (Option)

6

3 2

8

4 1

High capacity Second

Paper Feeder

0C

4 5

10

9

5V

3

3 5 9

28

IC1

1

0C

2

IC2

65-43

F0

G0

F2

F1 G2 E0 C2

C1

C0

D0

E1

22 21

20

24 29

5V

7

TR2

1

30V

CN2

6

4

MS4646

MA1

VR1

MA2

VR2

MB1

PH1

MB2

PH2

D1 D2

25 10 19

M

4

5V

3

A B

C D

270

560

2

Ω

0V

IC3

2

27

14

A

15

B

5V

ENVELOPE

OPTSD-P

3

OPTSCLK-N

2

OPTSDR-N

4

OPTPSIN-N

1

OLEV-(Option)

CN2

3 2 4 1

SEN1

3

SEN2

1

3

1

(Paper)

5V

42

IC1

12

0C

11

0C

9

13

8

C

0V

D

(Cover Open)

2

4

0V

10

IC2

65-43

3

F0

G0

5

F2

0C

1 2

28

9

G2 E0 C2

3

F1

C1 C0

D0

A0

7 4

3

22

A

21

B

20

C

24

1, 2 3, 4

11

SW1

TR1

5V

1

30V

CN2

D1 D2

2

IC3

MS4646

VR1 VR2 PH1

PH2

MA1 MA2

MB1 MB2

25 10 19

4

M

0V

2

27

14

A

15

B

0V

5V

SEN2

3

1

(Paper)

42

Multi purpose Feeder

C

Option Tray Connection and Block Diagram

- 27 -

0V

Option Tray Control Serial Interface Time Chart

- 28 -

OPTSD-P

OPTSCLK-N

OPTSDR-N

Next Command (CPU

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

µ

1.5µS40

Min. 1300

Max. 3000

S

µ

S

µ

S21

µ

S

Min. 3000

µ

S

→

Tray)Reply (Tray→CPU)Command (CPU→Tray)

Option Tray Serial Interface Time Chart

- 29 -

Motor Control Time Chart

Motor on (C2)

Phase change (C1, C0)

Paper sensor (OPTPSIN-N)

# of Phase changes after paper sensor detection is downloaded by CPU

Triggered by CPU

Option Tray Motor Control Time Chart

Automatically stops

3.14 Memory Expansion Option Board

A2 to A23

ALS244ALS244ALS244

D0 to D31

DRAM

CAS0 to CAS3

1M Byte

SIMM1

DRAM SIMM

PD2, 3

BSY

SIMM2

Flash SIMM

ALS244

OPTION CONNECTOR

RAS2 to RAS4 ORE, RD,

WR CS3, EEPCS, EEPCLK EEPDAT

IOS1

RAS2 ORE WR

RAS3, 4 WR

RD WR

Memory Expansion Board Block Diagram (Option)

The Memory Expansion Option Board is provided with two DRAM chips and two SIMM slots. The SIMM1 slot is used for installation of a DRAM SIMM. The SIMM2 slot is used for installation of a Flash SIMM. With the Board, a printer will have 5M bytes of Memory even without any additional DRAM SIMM memory on the SIMM1 slot because 1M DRAM is mounted on the board.

(1) DRAM

Two 4M bits DRAMs are installed. Memory capacity totals 1M byte.

(2) SIMM Memory Module

The board is provided with two Slots for a 72-pin DRAM SIMM Memory Module and Flash SIMM.

The SIMM1 slot is used for installation of a 72-pin DRAM SIMM Memory Module. Up to 6 types of SIMM Memory Module can be installed. 1M byte, 2M bytes, 4M bytes, 8M bytes, 16M bytes and 32M bytes. 4 types of access speed can be used. 60, 70, 80 and 100n sec.

The SIMM2 slot is used for installation of a Flash SIMM. The Flash SIMM is a Flash ROM Memory Module.

- 30 -

3.15 RS-232C Serial Interface Option Board

A2 to A23

ALS244ALS244

D0 to D31

PD2, 3

SIMM1

CAS0 to CAS3

DRAM SIMM

SIMM2

Flash SIMM

ALS244

BSY

OPTION CONNECTOR

RAS2 to RAS4 ORE, RD,

WR CS3, EEPCS, EEPCLK EEPDAT

IOS1

TXD, RST, DTR

ALS244

RAS3, 4 WR

RD WR

RXD

RS-232C CONNECTOR

75188

RS-232C Serial Interface Board Block Diagram (Option)

The RS-232C Serial Interface Option Board is provided with a RS-232C I/F and two SIMM slots. The SIMM1 slot is used for installation of a DRAM SIMM. The SIMM2 slot is used for installation of a Flash SIMM.

- 31 -

(1) RS-232C Interface

The serial data RXD from the host system, whose line voltage is clamped at the TTL level by D4/D512, are received by the CPU built-in serial controller.

DSR and CTS signals are terminated through 5.6kΩ resistors. Send signals TXD, RTS and DTR are put out from the CPU and are sent to lines through a line driver IC (75188).

CPU

RSRXDO-N

101

RSTXDO-P

108

RSRTDO-N

102

RSDTDO-N

103

Option connector

D2

+5V

75188

+8V -8V

D1

560pF

3.3K

5.6K

Idle

SERIAL

RXD

3

DSR

6

CTS

5

CD

8

TXD

2

RTS

4

DTR

20

SSD

11

Input 0V

Output 0V

(a) Send signal level (b)Receive signal level

TTL level

Input 0V

+8V

-8V Output 0V

- 32 -

+8V

-8V

TTL level

(2) SIMM Memory Module

The board is provided with two Slots for a 72-pin DRAM SIMM Memory Module and Flash SIMM.

The SIMM1 slot is used for installation of a 72-pin DRAM SIMM Memory Module. Up to 6 types of SIMM Memory Module can be installed. 1M byte, 2M bytes, 4M bytes, 8M bytes, 16M bytes and 32M bytes. 4 types of access speed can be used; 60, 70, 80 and 100n sec.

The SIMM2 slot is used for installation of a Flash SIMM. The Flash SIMM is a Flash ROM Memory Module.

- 33 -

3.16 Network Interface Option Board

A2 to A23

ALS244ALS244ALS244

D0 to D31

PD2, 3

ALS244

RD WR

BSY2

CS2

Flash ROM

1M Byte

LZ9FF22

CS 8900

Puls Traus

10BASE-T CONNECTOR

CAS0 to CAS3

OPTION CONNECTOR

RAS2 to RAS4 ORE, RD,

WR CS3, EEPCS, EEPCLK EEPDAT

IOS1 CS2

IOS0

INT2, DMARQ

SIMM1

DRAM SIMM

RAS3, 4 WR

RD WR

BSY1

SIMM2

Flash SIMM

Network Interface Board Block Diagram (Option)

The Network Interface Option Board is provided with a Network I/F, one Flash ROM chip and two SIMM slots. The SIMM1 slot is used for installation of a DRAM SIMM. The SIMM2 slot is used for installation of a Flash SIMM.

(1) Network Interface

It is an interface to communicate with 10BASE-T cable. The physical specification is according to IEEE802.3.

(2) Flash ROM

One 8M bits Flash ROM are installed. Program totals 1M bytes.

(3) SIMM Memory Module

The board is provided with two Slot for a 72-pin DRAM SIMM Memory Module and Flash SIMM.

The SIMM1 slot is used for installation of a 72-pin DRAM SIMM Memory Module. Up to 6 types of SIMM Memory Module can be installed. 1M byte, 2M bytes, 4M bytes, 8M bytes, 16M bytes and 32M bytes. 4 types of access speed can be used; 60, 70, 80 and 100n sec.

The SIMM2 slot is used for installation of a Flash SIMM. The Flash SIMM is a Flash ROM Memory Module.

- 34 -

3.17 Flash-SIMM Option (for Font Datas)

A0 to A20 D0 to D31

WR, RD, CE0~ 3

BSY0~ 3

Flash ROM

EEPDAT EEPCS

EEPCLK

EEPROM

Flash · SIMM Block Diagram (Option)

The Flash-SIMM Option (Flash-SIMM Option is provided with four font ROMs and one EEPROM.) The Flash-SIMM is installed to SIMM slot on the Memory Extension Option Board, RS-232C Serial Interface Option Borad or Network Interface Option Board.

(1) Font ROMs

Four 8M bits Flash ROMs or Four 4M bits Flash ROMs are Installed.

(2) EEPROM

Electrical Erassable PROM of 4096 bits. It stores information necessary for PCL & PostScript program.

- 35 -

4. TROUBLESHOOTING

4.1 Troubleshooting Table

(A) Power Supply Board (OL1- or OL2-PCB)

Note:

treated here is that of sensors only.

Paper input jam occurs frequently. #: TRAY1, TRAY2, FEEDER, MANUAL

The malfunction of the power supply is not repaired by an agency. The abnormality to be

Failure LCD Message

# INPUTJAM

Flowchart

No.

A - 1

Paper feed jam occurs frequently. #: TRAY1, TRAY2, FEEDER

Paper-exit jam occurs frequently. #: TRAY1, TRAY2, FEEDER, MANUAL

Paper size error occurs frequently. #: TRAY1, TRAY2, FEEDER, MANUAL

The message "TRAY PAPEROUT" remains displayed on the LCD.

#: TRAY1, TRAY2, FEEDER The message "COVER OPEN" remains

displayed on the LCD.

The message "TONERLOW" remains displayed on the LCD.

# FEED JAM

# EXIT JAM

# SIZE ERR

# PAPEROUT

COVER OPEN

TONERLOW ERROR 77

A - 2

A - 3

A - 4

A - 5

A - 6

A - 7

or

The message "TONERSNS" remains displayed on the LCD.

The printer does not function at all, and the LCD does not display any messages.

Thermistor open error.

Thermistor short error.

Serial interface does not connect to the host device.

TONERSNS

ERROR 72

ERROR 73

- 36 -

A - 8

A - 9

A - 10

A - 11

(B) Main Control Board (1/2)

Failure LCD Message

Abnormal message display on the LCD (no display, unclear display, display with some dot not lit).

Program ROM error.

ERROR 10

or

Flowchart

No.

B - 1

B - 2

ERROR 50

Font ROM error.

Resident RAM error. B - 4

EEPROM error. B - 5

ERROR 20

ERROR 30

ERROR 40

B - 3

Option RAM error.

Cooling fan error. B - 7

SSIO error. B - 8

Operator panel I/F error.

Option tray I/F timeout error

Watchdog timer timeout occurs frequently, or illegal CPU version.

Program error.

ERROR 60

ERROR 70

ERROR 74

ERROR 80

ERROR 81

ERROR 9*

ERROR F*

B - 6

B - 9

B - 10

B - 11

B - 12

- 37 -

(B) Main Control Board (2/2)

Failure LCD Message

Processor error.

Print overrun occurs frequently.

Error host I/F occurs frequently.

Error receive buffer overflow occurs frequently.

Paper input jan occurs frequently. #: TRAY1, TRAY2, FEEDER, MANUAL

Paper input jam occurs frequently. #: TRAY1, TRAY2, FEEDER, MANUAL

ERROR 0*

PRINT OVERRUN

HOST I/F ERROR

REC BUF OVERRUN

# INPUTJAM

# FEED JAM

Flowchart

No.

B - 13

B - 14

B - 15

B - 16

B - 17

B - 18

The key switch operation on the operator panel is disabled frequently.

Data sent through the Centronics I/F cannot be received.

Cover open occurs frequently.

COVER OPEN

B - 19

B - 21

B - 22

- 38 -

(C) Operator Panel Board (OLCC-2-PCB)

Failure LCD Message

Abnormal message display on the LCD (no display, unclear display, display with some dot not lit, etc.)

The key switch operation on the operator panel is disabled.

The LCD does not display any message. C - 3

Display on the LCD with some dot not lit. C - 4

Unclear display on the LCD. C - 5

Flowchart

No.

C - 1

C - 2

- 39 -

(D) High capacity second paper feeder board (TQSB-2)

Failure LCD Message

Paper input jams occur frequently.

TRAY 2 INPUTJAM

Paper out occurs even if the papersare in cassette or a tray.

TRAY 2 PAPEROUT

Second tray cover open errors occur even if the cover is closed.

COVER T2 OPEN

The printer does not recognize an option tray. D - 4

(E) Multi purpose feeder (OLEV)

Failure LCD Message

Paper input jams occur frequently.

FEEDER

Flowchart

No.

D - 1

D - 2

D - 3

Flowchart

No.

E - 1

Paper out occurs even if the papers are in cassette or a tray.

INPUTJAM

FEEDER PAPEROUT

E - 2

E - 3The printer does not recognize an option tray.

- 40 -

(F) Memory Expansion Option Board (MM6)

Failure

Option RAM error.

Option SIMM error. I - 1

ERROR 60

ROM-SIMM

LCD Message

Flowchart

No.

F - 1

ERROR

- 41 -

(G) Network Interface option board (MN6)

Failure

Error Host I/F occurs frequently. G - 1

HOST I/F

LCD Message

Flowchart

No.

ERROR

Option SIMM error.

ROM-SIMM

I - 1

ERROR

- 42 -

(H) RS-232C interface option board (SMIF)

Failure

LCD Message

HOST I/F ERROR

Loop test error occurs during loop test. H - 2

ROM-SIMM ERROR

(I) Flash-SIMM (Font SIMM option)

LCD Message

Option SIMM error.

Failure

ROM-SIMM ERROR

Flowchart

No.

H - 1Error host I/F occurs frequently.

I - 1Option SIMM error.

Flowchart

No.

I - 1

- 43 -

4.2 Troubleshooting Flowchart

A-1 Paper input jam occurs frequently.

• Is PS3 (Inlet Sensor 1) operating normally?

• No Replace PS3.

▼

• Yes Is PS5 (Inlet Sensor 2) operating normally?

• No Replace PS5.

▼

• Yes Replace IC2 (LC26023A).

A-2 Paper feed jam occurs frequently.

• Is PS3 (Inlet Sensor 1) operating normally?

• No Replace PS3.

▼

• Yes Is PS5 (Inlet Sensor 2) operating normally?

• No Replace PS5.

▼

• Yes Is PS2 (Paper Sensor) operating normally?

• No Replace PS2.

▼

• Yes Is PS1 (Outlet Sensor) operating normally?

• No Replace PS1.

▼

• Yes Replace IC2 (LC26023A).

A-3 Paper exit jam occurs frequently.

• Is PS1 (Outlet Sensor) operating normally?

• No Replace PS1.

▼

• Yes Replace IC2 (LC26023A).

- 44 -

A-4 Paper size error occurs frequently.

• Is PS3 (Inlet Sensor 1) operating normally?

• No Replace PS3.

▼

• Yes Is PS5 (Inlet Sensor 2) operating normally?

• No Replace PS5.

▼

• Yes Replace IC2 (LC26023A).

A-5 The message “TRAY PAPEROUT” remains displayed on the LCD

• Is PS4 (Paper End Sensor) operating normally?

• No Replace PS4.

▼

• Yes Replace IC2 (LC26023A).

A-6 The message “COVER OPEN” remains displayed on the LCD.

• Is SW2 (Cover Open Switch) operating normally?

• No Replace SW2.

▼

• Yes Is the CVOPN-N signal low at SW2?

• No Replace SW2.

▼

• Yes Is CVOPN-N signal low at Pin-2 of R600?

• No Replace the power supply board.

▼

• Yes Replace R564.

A-7 The message “TONERLOW” remains displayed on the LCD, or ERROR 77.

• Is PS6 (Toner Sensor) operating normally?

• No Replace PS6 or check Main Motor/ Main control board.

▼

• Yes Replace IC2 (LC26023A).

A-8 The message “TONERSNS” remains displayed on the LCD.

• Is PS6 (Toner Sensor) operating normally?

• No Replace PS6.

▼

• Yes Replace IC2 (LC26023A).

- 45 -

A-9 The printer does not function at all, and the LCD does not display any messages.

• Is fuse F1 open?

• Yes Replace F1.

▼

• No Is the voltage waveform between Pins 1 and 3 of the connector (CN2) same as the waveform shown below?

T

CH1 + CH1

CH1: DC 20V/div. Normal 5ms/div.

• No Replace the transformer T1.

▼

• Has the problem been solved?

• Yes End.

▼

• No Is the voltage output between Pins 2 and 3 of the filter L101 100 VAC?

• No Replace the filter L101.

▼

• Yes Replace the filter L1.

▼

• Has the problem been solved?

• Yes End.

▼

• No Replace the capacitors C1, C2 and C3.

▼

• Yes Is the fuse F3 open?

• Yes Replace F3.

▼

• No Is the voltage output of Pin 17 of the connector (CN3) about 30 VDC?

• No Replace the diode bridge DS1.

▼

• Yes Is the voltage output of Pin 11 of the connector (CN3) about 5 VDC?

- 46 -

• No Replace the transistor Q1.

▼

• Has the problem been solved?

• Yes End.

▼

• No Replace the transistor Q2.

▼

• Has the problem been solved?

▼

• No Replace IC1 (FA7617P-1).

▼

• Yes Check the connection between the power supply board and main control board.

A-10 Thermistor open error (ERROR 72), Thermistor short error (ERROR 73).

• Is the voltage output between (L) and (N) of the connector ACOUT correct (240V or

120V)?

• Yes Replace IC2 (LC26023A).

▼

• Has the problem been solved?

• Yes End.

▼

• No Thermistor of fuser failure.

▼

• No Is Pin 2 (HEAT-N signal) of PC1 (S21ME4) low?

• No Check the connection between the power supply board and main

control board

• Yes Is Pin 1 (HEAT-NO signal) of PC1 (S21ME4) low?

• No Replace the photo coupler PC1 (S21ME4).

▼

• Has the problem been solved?

• Yes End.

▼

• No Replace the thyristor D1 (TM1241/TM1261).

▼

• Yes Is Pin 10 of IC4 (324P) low?

• No Replace Q7 (2SC3400).

▼

• Yes Replace IC4 (324P).

- 47 -

A-11 Serial interface does not connect to the host device.

• Is the voltage waveform between Pins 5 and 6 of the connector (CN2) same as the waveform shown below?

T

CH1 + CH1

CH1: DC 5V/div. Normal 5ms/div.

• No Replace the transformer T1.

▼

• Has the problem been solved?

• Yes End.

▼

• No Replace the diode D10.

▼

• Yes Is the voltage output at Pin 24 of the connector CN3 +8 VDC?

• Yes Check the connector to the power supply board and main control board.

▼

• No Replace the diode D9.

▼

• Has the problem been solved?

• Yes End.

▼

• No Replace the capacitors C17 and C18.

- 48 -

B-1 Abnormal message display on the LCD.

• Replace IC2, IC3.

▼

• Has the problem been solbed?

• Yes End.

▼

• No Is the 20.2752-MHz clock signal being sent to Pin 3 of OSC1?

• No Replace OSC1 (CST 20.27MXW).

▼

• Yes Is the output at Pin 7 (RESET-N) of IC10 (µPC393G2) normal (see Section 3.3 Reset Control on page 7)?

• No Replace IC10 (µPC393G2).

▼

• Yes Failure of IC1 (MHM2029-005K).

B-2 Program ROM error (ERROR 10 or ERROR 50).

• Replace IC2 and IC3.

B-3 Font ROM error (ERROR 20).

• Replace IC2 and IC3.

B-4 Resident RAM error (ERROR 30).

• Are negative pulses being put out to Pin 14 (DRAS0-N) of IC4, IC5(5118160JP-60)?

• No Failure of IC1 (MHM2029-005K).

▼

• Yes Are negative pulses being sent to Pin 31, 30 (DCAS0-N, DCAS1-N, DCAS2N, DCS3-N) of IC4, IC5 (5118160JP-60)?

• No Failure of IC1 (MHM2029-005K).

▼

• Yes Replace IC4, IC5 (5118160JP-60).

B-5 EEPROM error (ERROR 40).

• Replace IC12 (93LC66).

▼

• Has the problem been solved?

• Yes End.

▼

• No Failure of IC1 (MNM2029-005K).

- 49 -

B-6 Option RAM error (ERROR 60).

• Remove the DRAM SIMM. Has the problem solved.

• Yes Failure of DRAM SIMM.

▼

• Are negative pulses being sent to Pin 83 (DRAS2-N), Pin 84 (DRAS3-N), Pin 85

(DRAS4-N), Pin 86 (DRAS5-N) of the connector (OPTION)?

• No Failure of IC1 (MHM2029-005K).

▼

• Yes Failure of Option PCB. Go to flowchart F-1 , G-1 or H-1 .

B-7 Cooling fan error (ERROR 70).

• Is the fan rotating?

• No Is +38V power being supplied to Pin 1 (FAN POW) of the connector

(FAN)?

• No Is the output at Pin 109 (FANON1-P) of IC1 (MHM2029K005K) at high level?

• No Failure of IC1 (MHM2029K-005K).

▼

• Yes Is +38V power being supplied to Pin 3 of TR501?

• No Replace TR502, TR503 and TR504.

▼

• Yes Replace TR501 and IC10 (PC393G2)

▼

• Yes Are negative pulses being sent to Pin 3 (FANALM-N) of the connector (FAN)?

• No Replace the fan.

▼

• Failure of IC1 (MHM2029K-005K).

B-8 SSIO error (ERROR 74).

• Is the connection at the connector (POWER) properly engaged?

• No Replace the connector (POWER).

▼

• Yes Failure of IC1 (MHM2029-005K).

B-9 Operator panel I/F timeout error (ERROR 80).

• Is the connection at the connector (PANEL) properly engaged?

• No Replace the connector (PANEL).

▼

• Yes Failure of IC1 (MHM2029-005K).

- 50 -

B-10 Option tray I/F timeout error (ERROR 81).

• Is the connection at the connector (2NDTRAY) properly engaged?

• No Replace the connector (2NDTRAY).

▼

• Yes Is the connection at the connector (ENVELOPE) properly engaged?

• No Replace the connector (ENVELOPE).

B-11 Watchdod timer timeout error occurs frequently (ERROR 90), or illegal CPU version

(ERROR 91).

• Failure at IC1 (MHM2029-005K).

B-12 Program error (ERROR F*).

• Replace IC2 and IC3.

▼

• Has the problem been solved?

• Yes End.

▼

• No Failure of IC1 (MHM2029-005K).

B-13 Processor error (ERROR 0*).

• Replace IC2, IC3.

▼

• Has the problem been solved?

• Yes End.

▼

• No Failure of IC1 (MHM2029K-005K).

- 51 -

B-14 Print overrun occurs frequently.

• Is an option board mounted?

• Yes Go to the flowchart B-6.

▼

• No Set DRAM SIMM Memory Module on an option board, then mount it to the printer.

• Has the problem been solved?

• Yes Print Data is too complex to print out, so it is necessary to mount an option board with DRAM (SIMM Memory Module) to the printer.

▼

• No Go to the flowchart B-6.

B-15 Error host I/F occurs frequently.

• Remove the option PCB (RS-232C or Network). Has the Problem been solved?

• Yes Failure of option PCB. Go to flowchart of each option PCB

▼

• No Failure of IC1 (MHM2029-005K)

B-16 Error receive buffer overflow occurs frequently.

[Centronics I/F]

• Is the BUSY signal being sent to Pin 11 (BUSY-P) of the connector (CENT)?

• No Is the BUSY signal being sent to Pin 3 (BUSY-P) of IC11 (74LS07)?

• Yes Replace IC11 (74LS07).

▼

• No Failure of IC1 (MHM2029-005K).

▼

• Yes Verify the host settings. [Serial I/F]

• Is the DTR signal being sent to Pin 4 (DTR) of the connector (CN2 on the RS-232C option PCB)?

• No Is the DTR signal being set to Pin 9 (DTR-N) of Q11 (75188 on the RS-232C option PCB)?

• Yes Replace Q11 (75188 on the RS-232C option PCB).

▼

• No Failure of IC1 (MHM2029-005K).

▼

• Yes Verify the operation of the host.

- 52 -

B-17 Paper input jam.

• Is the hopping motor rotating normally?

• No Are the waveforms of RMPH1-P and RMPH2-P signals as shown in

▼

• Yes When the motor is rotating, does the output to Pin 20 and Pin 23 of

▼

• Yes Is the voltage at Pin 1 of IC8 (MTD2005F) +38V?

▼

• Yes Replace IC8 (MTD2005F).

▼

• No Failure of the power supply board or mechanical parts.

Section 3.9 (2) being sent to Pins 26 and 17 of IC8 (MTD2005F) respectively?

• No Failure of IC1 (MHM2029-005K).

IC8 (MTD2005F) go high?

• No Failure of IC1 (MHM2029-005K).

• No Is the voltage at Pin 2 of FU1 +38V?

• No Replace FU1 (fuse).

- 53 -

B-18 Paper feed jam occurs frequently.

• Is the main (drum) motor rotaing normally?

• No Are the waveforms of DMPH1-P and DMPH2-P as shown in Section

3.9 (1) being sent to Pins 13 and 8 of IC9 (A2918SW) respectively?

• No Failure of IC1 (MHM2029-005K).

▼

• Yes When the main (drum) motor is rotating, is DMON1-N at Pin 7 and 14 of IC9 (A2918SW) low?

• No Failure of IC1 (MHM2029-005K).

▼

• Yes Is the voltage at Pin 5 of IC9 (A2918SW) +38V?

• No Replace FU1 (FUSE).

▼

• Yes Replace IC9 (A2918SW).

▼

• No Failure of the power supply board or mechanical parts.

B-19 The key switch operation on the operator panel is disabled frequently.

• Is the clock signal (285kHz) being sent to Pin 6 of PANEL during key operations?

• No Failure of IC1 (MHM2029-005K).

▼

• Yes Is the data signal being sent to Pin 3 (PDATAOUT-P) of PANEL during key operations?

• No Failure of IC1 (MHM2029-005K).

▼

• Yes Verify the connection of PANEL.

- 54 -

B-21 Data sent through the centronics I/F cannot be received.

• Is the signal at Pin 11 (BUSY-P) of the connector (CENT) low?

• No Is the signal at Pin 3 (PBUSY-P) of IC11 (74LS07) change at data

reception as shown below?

ON-LINE OFF-LINE

PBUSY-P Low High

• No Failure of IC1 (MHM2029-005K).

▼

• Yes Replace IC11 (74LS07).

▼

• Yes Is the level of the signal at Pin 1 (PSTB-N) of the connector (CENT) change at data reception?

• No Verify the connection of I/F cable or the operation of the host

computer.

▼

• Yes Are the signals at Pin 5 (PACK-N), Pin 13 (PERROR-N) of IC11 (74LS07) respectively low and high in on-line mode?

• No Replace IC11 (74LS07).

▼

• Has the problem been solved?

• Yes End.

▼

• Yes Failure of IC1 (MHM2029-005K).

▼

• No

B-22 Cover open occurs frequently.

• Are Pins 2 and 3 of the diode D501 open?

• Yes Replace D501.

▼

• No Is the connection of the connector (POWER), correct?

• No Replace the connector (POWER).

▼

• Yes Failure of IC1 (MHM2029-005K).

- 55 -

C-1 Abnormal message display on the LCD (no display, unclear display, display with some

dot not lit, etc.)

• Is +5V power being supplied to Pin 8 of IC1 (BU6152S)?

• No Replace CN1.

▼

• Yes Is the CLOCK signal being sent to Pin 26 (OP-CLOCK-N) of IC1 (BU6152S)?

• No Replace CN1.

▼

• Yes Is the DATA signal being sent to Pin 2 (OP-DATA-IN) of IC1 (BU6152S)?

• No Replace CN1.

▼

• Yes Is the LOAD signal being sent to Pin 11 (OP-LOAD-N) of IC1 (BU6152S)?

• No Replace CN1.

▼

• Yes Is the DATA signal being sent to Pin 24 (OP-DATA-OUT) of IC1 (BU6152S)?

• No Replace IC1 (BU6152S).

▼

• Yes Is +5V power being supplied to Pin 2 of CN1? (OLCC-PCB)

• No Replace CN1. (OLCC-PCB)

▼

• Yes Is the DB signal being sent to Pins, 19, 20, 29, 30 (DB4 to DB7) of IC1 (BU6152S)?

• No Replace IC1 (BU6152S).

▼

• Yes Is the RS signal being sent to Pin 22 of IC1 (BU6152S)?

• No Replace IC1 (BU6152S).

▼

• Yes Is the R/W signal being sent to Pin 27 of IC1 (BU6152S)?

• No Replace IC1 (BU6152S).

▼

• Yes Is the E signal being sent to Pin 9 of IC1 (BU6152S)?

• No Replace IC1 (BU6152S).

▼

• Yes Replace CN2.

- 56 -

C-2 The key switch operation on the operator panel is disabled.

• Do the signals at Pins, 3, 7, 10, 18, 23, 31 of IC1 (BU6152S) change from high to low

level by key switch pushing?

• No Replace SW1 to SW8.

▼

• Yes Is the connection of CN1 correct? (OLCC-PCB)

• No Connect the connector correctly.

▼

• Yes Replace IC1 (BU6152S).

C-3 The LCD does not display any message.

• Is +5V power being supplied to Pin 33 of IC2 (HD44780)?

• No Replace CN1. (OLCC-PCB)

▼

• Yes Are 4.15V, 3.3V, 2.46V, 1.61V, and 0.77V powers being supplied respectively to Pins 26,27, 28, 29 and 30 of IC2 (HD44780)?

• No Are the resistance values of R5 through R10 correct? (OLCC-PCB)

• No Replace R5 through R10. (OLCC-PCB)

▼

• Yes Replace IC2 (HD44780).

▼

• Has the problem been solved?

▼

• Yes

• Yes End.

▼

• No Replace CN1. (OLCC-PCB)

▼

• Has the problem been solved?

• Yes End.

▼

• No Is the contact surface of the zebra rubber dirty?

• No Clean the dirt.

▼

• Yes Replace the zebra rubber.

▼

• Has the problem been solved?

• Yes End.

▼

• No Replace the LCD.

- 57 -

C-4 Display on the LCD with some dot not lit.

• Are 4.15V, 3.3V, 2.46V, 1.61V, and 0.77V powers being supplied respectively to Pins

26, 27, 28, 29 and 30 of IC2 (HD44780)?

• No Replace R5 through R10. (OLCC-PCB)

▼

• Yes Is the COM signal being sent to Pins 47 through 62 (COM01 to COM16) of IC2 (HD44780)?

• No Replace IC2 (HD44780).

▼

• Yes Is the SEG signal being sent to Pins 1 through 22 (SEG 19 to SEG40), Pins, 63 through 80 (SEG01 to SEG18) of IC2 (HD44780)?

• No Replace IC2 (HD44780).

▼

• Yes Is the contact surface of the zebra rubber dirty?

• No Clear the dirt.

▼

• Yes Replace the zebra rubber.

▼

• Has the problem been solved?

• Yes End.

▼

• No Replace the LCD.

C-5 Unclear display on the LCD.

• Is +5V power being supplied to Pin 33 of IC2 (HD44780)?

• No Replace CN1. (OLCC-PCB)

▼

• Yes Are 4.15V, 3.3V, 2.46V, 1.61V, and 0.77V power being supplied respectively to Pins 26, 27, 28, 29 and 30 of IC2 (HD44780)?

• No Replace R5 through R10. (OLCC-PCB)

▼

• Yes Is the contact surface of a zebra rubbber dirty?

• No Clear the dirt.

▼

• Yes Replace the zebra rubber.

▼

• Has the problem been solved?

• Yes End.

▼

• No Replace the LCD.

- 58 -

D-1 Paper input jams occur frequently.

• Has the fuse F1 opened?

• No Is the high voltage (around 30V being sent to Pin 2 of D1 and Pin 2

of D2?

• No Replace D1 or D2.

▼

• Yes Is the signal level at Pin 22 of IC2 at low level?

• No Replace IC2.

▼

• Yes Are the signals at Pins 20 and 21 of IC2 being altered?

• No Replace IC2.

▼

• Yes Is the signal level at Pin 2 of TR2 around 5V?

• No Replace TR2.

▼

• Yes Are the signal levels at Pin 20 and 27 of IC3 around 3.4V?

• No Replace R6 and R17.

▼

• Yes Are the signals at Pins 1 to 4 of connector (MOTOR) being altered?

• No Replace IC3.

▼

• Yes Replace motor.

▼

• Yes Replace the Fuse F1.

D-2 Paper out occurs even if the papers are in a cassette.

• Is paper sensor (SEN1) operating normally?

• No Replace the paper sensor.

▼

• Yes Replace IC2.

D-3 High capacity Second Paper Feeder cover open errors occur even if the cover is closed.

• Is cover open sensor (SEN2) operatingnormally?

• No Replace SEN2.

▼

• Yes Replace IC2.

- 59 -

D-4 The printer does not recognize High capacity Second Paper Feeder.

• Do signal levels at Pin 2 (OPTSCLK-N) and 3 (OPTSD-P) PU alter at power-up time?

• No Replace Cable.

• No Replace D1 or D2.

▼

• Yes Do signal levels at Pin 4, 7, and 9 of IC2 alter at power-up time?

• No Is signal level at Pin 2 of D5 at 3.9V?

• No Replace D5.

▼

• Yes Is signal level at Pin 2 of TR1 around 5V?

• No Replace TR1.

▼

• Yes Is signal level at Pin 2 of C3 high?

• No Replace C3.

▼

• OK?

▼

• No Is OSC1 being oscillated at 4MHz?

• No Replace OSC1.

▼

• Yes Replace IC2.

▼

• Yes Do signal levels at Pin 3 and 8 of IC1 alter at power-up time?

• No Replace IC1.

▼

• Yes Does signal level at Pin 6 of IC1 alter at power-up time when Pin 8 of IC1 is at low level?

• No Replace IC1.

- 60 -

E-1 Paper input jams occur frequently.

• Is the motor rotating?

• No Has the fuse F1 opened?

• No Is the high voltage (around 30V) being sent to Pin 2 of D1 and Pin 2 of D2?

• No Replace D1 or D2.

▼

• Yes Is the signal level at Pin 22 of IC2 at low level?

• No Replace IC2.

▼

• Yes Are the signals at Pins 20 and 21 of IC2 being altered?

• No Replace IC2.

▼

• Yes Is the signal level at Pin 2 of TR1 around 5V?

• No Replace TR1.

▼

• Yes Is the signal level at Pin 2 and 27 of IC3 around 1.8V?

• No Replace R6 and R17.

▼

• Yes Are the signals at Pins 1 to 4 of CN3 being altered?

• No Replace IC3.

▼

• Yes Replace motor.

▼

• Yes Replace the Fuse F1.

E-2 Paper out occurs even if the papers are in a cassette or a tray.

• Is paper sensor (SEN1 in Second Tray and SEN2 in Multi-purpose Feeder) operating normally?

• No Replace the paper sensor.

▼

• Yes Replace IC2.

- 61 -

E-3 The printer does not recognize Multi Purpose Feeder.

• Do signal levels at Pin 2 (OPTSCLK-N) and 3 (OPTSD-P) CN1 alter at power-up time?

• No Replace Option Tray Cable.

▼

• Yes Do signal levels at Pin 4, 7, and 9 of IC2 alter at power-up time?

• No Is signal level at Pin 2 of D4 at 3.9V?

• No Replace D5.

▼

• Yes Is signal level at Pin 2 of TR4 around 5V?

• No Replace TR4.

▼

• Yes Is signal level at Pin 2 of C2 high?

• No Replace C2.

▼

• OK?

▼

• No Is OSC1 being oscillated at 4MHz?

• No Replace OSC1.

▼

• Yes Replace IC2.

▼

• Yes Do signal levels at Pin 3 and 11 of IC1 alter at power-up time?

• No Replace IC1.

▼

• Yes Does signal level at Pin 8 of IC1 alter at power-up time when Pin 3 of IC1 is

at low level?

• No Replace IC1.

- 62 -

F-1 Option RAM error (ERROR 60)

• Remove the DRAM SIMM. Has the problem been solved?

• Yes Failure of DRAM SIMM.

▼

• Are negative pulses being sent to Pin 83 (DRAS2-N), Pin 84 (DRAS3-N), Pin 85 (DRAS4-N), PIn 86 (DRAS5-N) of the connector (CN1)?

• No Failure of IC1 (MHM2029-005K) or Main Control PCB (M5E).

▼

• Yes Replace D1, D2 (514260).

- 63 -

G-1 Error host I/F occurs frequently.

• Is the connection at the connector (CN2) properly engaged?

• No Replace the connector (CN2).

▼

• Yes Replace the T1 (TD43-2006k)

▼

• Is the 20.000 MHz clock signal being sent to Pin 3 of OSC1?

• No Replace OSC1 (CX0-049 20.000 MHz)

▼

• Replace the IC1 (CS8900)

▼

• Replace the IC2 (LZ9FF22).

▼

• Replace the IC3 (29F800TA).

- 64 -

H-1 Error host I/F occurs frequently.

• Is the connection at the connector (CN2) properly engaged?

• No Replace the connector (CN2).

▼

• Yes Is the voltage at Pin 14 of Q11 (75188) about +8V and the voltage at Pin 1 of

Q11 (75188) about -8V?

• No Check the connection of the connector (CN1).

▼

• Yes Replace Q11 (75188).

▼

• Has the problem been solved?

• Yes End.

▼

• No Replace BF1 (ZBF253D-01).

▼

• Has the problem been solved?

• Yes End.

▼

• No Failure of IC1 (MHM2029-005K) on the Main Control PCB (M5E).

H-2 Loop test error occurs during loop test.

• Does the state of RXD-N signal vary?

• No Does the state of TXD signal at Pin 3 of Q11 (75188) vary?

• No Check the loop connector.

▼

• Yes Does the state of TXD signal at Pin 2 of Q11 (75188) vary?

• No Failure of IC1 (MHM2029-005K) on the Main Control PCB (M5E).

▼

• Yes Replace Q11 (75188).

▼

• Yes Failure of IC1 (MHM2029-005K) on the Main Control PCB (M5E).

- 65 -

I-1 Option SIMM error (ROM-SIMM ERROR)

• Is the connection of SIMM2 slot correct?

• No Replace the SIMM2 slot.

▼

• Yes Remove the Flash-SIMM. Has the problem been sloved?

• Yes Failure of Flash-SIMM.

▼

• No Failure of IC1 (MHM2029-005K) or Main Control PCB (M5E).

- 66 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

5. CIRCUIT DIAGRAM

- 67 -

5. CIRCUIT DIAGRAM

Figure 5-1(1/11~11/11)Main Control Board (M5E-PCB, Rev.3) (40750002) Figure 5-2(1/1) Operator Panel Board (OLCC-2-PCB, Rev.4) (4YA4130-1001G2) Figure 5-3(1/4~4/4) Power Supply Board (OL1-PCB, Rev.6) (40217701) Figure 5-4(1/4~4/4) Power Supply Board (OL2-PCB, Rev.6) (40217702) Figure 5-5(1/1) High Capacity Second (TQSB-2-PCB, Rev.1) (4YA4046-1651G2)

Figure 5-6(1/2~2/2) Multi Purpose Feeder (OLEV-PCB, Rev.4) (4YA4121-1014G11)

Figure 5-7(1/5~5/5) Memory Expansion (MM6-PCB, Rev.4) (40369105)

Figure 5-8(1/6~6/6) Network interface (MN6-PCB, Rev.1) (40755404)

Figure 5-9(1/5~5/5) RS-232C interface (SMIF-PCB, Rev.5) (00025304)

Paper Feeder Board

Board

Board Figure 5-10(1/1) Flash SIMM(4MB) (FSL-PCB, Rev.1) (40405419) Figure 5-11(1/1) Flash SIMM(8MB) (FSL-2-PCB, Rev.1) (40405420)

- 68 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-1 Main Control Board (M5E-PCB, Rev.3) (1/11)

- 69 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-1 Main Control Board (M5E-PCB, Rev.3) (2/11)

- 70 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-1 Main Control Board (M5E-PCB, Rev.3) (3/11)

- 71 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-1 Main Control Board (M5E-PCB, Rev.3) (4/11)

- 72 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-1 Main Control Board (M5E-PCB, Rev.3) (5/11)

- 73 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-1 Main Control Board (M5E-PCB, Rev.3) (6/11)

- 74 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-1 Main Control Board (M5E-PCB, Rev.3) (7/11)

- 75 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-1 Main Control Board (M5E-PCB, Rev.3) (8/11)

- 76 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-1 Main Control Board (M5E-PCB, Rev.3) (9/11)

- 77 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-1 Main Control Board (M5E-PCB, Rev.3) (10/11)

- 78 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-1 Main Control Board (M5E-PCB, Rev.3) (11/11)

- 79 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

CN1

ZC-106

2

1

C2

100pF 50V

2

1

C4

100pF 50V

2

1

C3

100pF 50V

2

1

C5

100pF 50V

C1

2+

1

100

µ

F 10V

2

1

C5

0.1µF 25V

2

1

C7

0.1µF 25V

R1

1

180

Ω

J 1/10W

200

Ω

J 1/10W

200

Ω

J 1/10W

2

R2

1

2

R4

1

2

R11

1

2

10K

Ω

J 1/10W

7.5K

Ω

J 1/10W

R12

1

2

10K

Ω

J 1/10W

R13

1

2

10K

Ω

J 1/10W

R14

1

2

10K

Ω

J 1/10W

R15

1

2

10K

Ω

J 1/10W

R16

1

2

10K

Ω

J 1/10W

R17

1

2

10K

Ω

J 1/10W

R18

1

91K

Ω

F 1/10W

2

R10

1

2

7.5K

Ω

J 1/10W

R9

1

2

7.5K

Ω

J 1/10W

R8

1

2

7.5KΩJ 1/10W

R7

1

2

7.5KΩJ 1/10W

R6

1

2

6.8K

Ω

J 1/10W

R5

1

2

1

2NL

SW1

1

2NL

SW5

1

2NL

SW2

1

2NL

SW6

1

2NL

SW3

1

2NL

SW7

1

2NL

SW4

1

2NL

SW8

D1

1

2

SEL3410G-YG

+5V

0V

+5V

0V

+5V

0V

OP-DATA-IN

OP-LDAD-N

OP-DATA-OUT

OP-CLOCK-N

+5V

0V

463

1

2

5

IC1

5148

IC2

44780

2

112426

12

8

172532

16

142128

13

561

4

2030291922

279317151823

10

3

LED1

LED2

LED3

LED4

LED5

LED6

LED7

LED8

DT04

DT15

DT26

DT37

DRIR

RWSG

ESOP

SWC1

SWC2

SWC3

SWI1

SWI2

SWI3

SWI4

PSIN

SGCR-N

SOUT

SCLK-N

P60S

VDD1

VDD2

VDD3

VDD4

GND

3637383940414243444546

4748495051525354555657585960616222212019181716151413121110

987654321

807978777675747372717069686866656463353231

34

COM1

COM2

COM3

COM4

COM5

COM6

COM7

COM8

COM9

COM10

COM11

COM12

COM13

COM14

COM15

COM16

SEG1

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG10

SEG11

SEG12

SEG13

SEG14

SEG15

SEG16

SEG17

SEG18

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

SEG31

SEG32

SEG33

SEG34

SEG35

SEG36

SEG37

SEG38

SEG39

SEG40

D0

CP

L

DF

24

25

2627282930

33

23

RS

R/WEDB0

DB1

DB2

DB3

DB4

DB5

DB6

DB7

OSC1

OSC2

V1V2V3V4V5

VCC

GND

<L049>COM01

<L050>COM02

<L051>COM03

<L052>COM04

<L053>COM05

<L054>COM06

<L055>COM07

<L056>COM08

<L008>COM09

<L007>COM10

<L006>COM11

<L005>COM12

<L004>COM13

<L003>COM14

<L002>COM15

<L001>COM16

<L009>SEG40

<L010>SEG39

<L011>SEG38

<L012>SEG37

<L013>SEG36

<L014>SEG35

<L015>SEG34

<L016>SEG33

<L017>SEG32

<L018>SEG31

<L019>SEG30

<L020>SEG29

<L021>SEG28

<L022>SEG27

<L023>SEG26

<L024>SEG25

<L025>SEG24

<L026>SEG23

<L027>SEG22

<L028>SEG21

<L029>SEG20

<L030>SEG19

<L031>SEG18

<L032>SEG17

<L033>SEG16

<L034>SEG15

<L035>SEG14

<L036>SEG13

<L037>SEG12

<L038>SEG11

<L039>SEG10

<L040>SEG09

<L041>SEG08

<L042>SEG07

<L043>SEG06

<L044>SEG05

<L045>SEG04

<L046>SEG03

<L047>SEG02

<L048>SEG01

Figure 5-2 Operator Panel Board (OLCC-2-PCB, Rev.4) (1/1)

- 80 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-3 Power Supply Board (OL1-PCB, Rev.6) (1/4)

- 81 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-3 Power Supply Board (OL1-PCB, Rev.6) (2/4)

- 82 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-3 Power Supply Board (OL1-PCB, Rev.6) (3/4)

- 83 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-3 Power Supply Board (OL1-PCB, Rev.6) (4/4)

- 84 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-4 Power Supply Board (OL2-PCB, Rev.6) (1/4)

- 85 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-4 Power Supply Board (OL2-PCB, Rev.6) (2/4)

- 86 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-4 Power Supply Board (OL2-PCB, Rev.6) (3/4)

- 87 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-4 Power Supply Board (OL2-PCB, Rev.6) (4/4)

- 88 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

123

4

FG

FG1

PU

OPTSIN-N

OPTSCLK-N

OPTSD-P

OPTSDR-N

0VP

+30V

0VL

+5V

1

2

3

4

5

6

7

8

MOTOR

00-8263-0412-00-000

SIZE

ZC-105

R3

1

180

Ω

J 1/4W

180

Ω

J 1/4W

10K

Ω

J 1/10W

10K

Ω

J 1/10W

10K

Ω

J 1/10W

10K

Ω

J 1/10W

10K

Ω

J 1/10W

10K

Ω

J 1/10W

0.51

Ω

J 1/2W

0.51

Ω

J 1/2W

2

R4

1

2

R510

1

2

1

2

15K

Ω

J 1/10W

1K

Ω

J 1/10W

R508

1

2

R503

1

2

R515

1

2

R516

1

2

R517

1

2

R518

1

2

R512

1

2

R511

1

2

R514

1

2

R513

1

2

R504

1

2

R506

12K

Ω

J 1/10W

560

Ω

J 1/10W

1

2

R505

1

2

R2

1

2

R1

2

R502

1

2

R501

1

2

R509

10K

Ω

J 1/10W

10K

Ω

J 1/10W

1

2

SEN1

SG-205

1

2

3

4

SEN2

SG-205

1

2

3

4

2

1

C508

2

1

C507

2

1

C505

2

1 C504

1000pF 50V

0.1

µ

F 25V

1000pF 50V

2

1 C503

2

1 C3

C1

10

µ

F 50V

1

+2

2

1 C506

+5V

0VL

+28V 0VP

2

1

C502

470pF 50V

R507

2

0.1

µ

F 25V

33

µ

F 10V

0.33

µ

F 50V

0.1

µ

F 25V

1

2+

1

C501

C2

D5

1

2

RD3.9E-B

D4

1S953/1S2075K/1S247

1

2

D1

1

2

1

D3

D2

1

2

S1

1

2

S2

1

2

S3

1

2

IC1

LS38

8

2

OC

IC1

LS38

6

4

OC

IC1

LS38

3

1

10

1

3

2

5

2

OC

+30V

0VL

+5V

0VL

+5V

0VP

0VL

+28V

+5V

0VL

BF

BF501

BF502

BF

1

2

1

2

RM1

5.1K

Ω

J

1/8W

1

2345

10K

Ω

J 1/10W

2

1

3

OSC1

FAR

TR1

F1

1

2

1A

Not mounted

1000pF 50V

47K

Ω

J 1/10W

1K

Ω

J 1/10W

1K

Ω

J 1/10W

47K

Ω

J 1/10W

3

1

2

TR2

270

Ω

J 1/10W

1000pF 50V

M-T3

M-T4

M-T1

M-T2

214

3

SIZE3

SIZE2

SIZE1

SIZE0

123

40V5

IC2

6543

F0/SI

F1/SD

F2/CK

F3/INT

ID/OS2

A0A1A2

A3

C0C1C2C3D0D1D2

D3

E0E1E2

E3

G0G1G2

G3

111213142021222324252627282930

178

9

10

OSI

RES

TEST

VCC

GND

345

6

15

16

19

17218

IC3

M54646P

PH1 MA1

MB1

C1

E1

E2

MA2

MB2

C2

4101

5

24

251928

VR1

T1

PH2

VR2

T2

VMM1

VMM2

VMM3

VMM4

VCC1

VCC2

GND1

GND2

GND3

GND4

GND5

GND6

GND7

GND8

142131527

1631118261217

678

9

202122

23

EM01Z/SM1XN02/ . .

Figure 5-5 High Capacity Second Paper Feeder Board (TQSB-2-PCB, Rev.1) (1/1)

- 89 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

TR2

CN1

TCS7698-01-201

CN2

TCS7698-01-201

CN3

00-8263-0412-00-000

S3

1

2

3

L2

1

2

L3

1

2

L4

1

2

S1

1

2

S4

1

2

S2

1

2

D4

1

2

RD3.9E-B

R9

2

1

R11

1

4

5

6

IC1

10K

Ω

J 0.1W

2

R10

2

1

R14

2

1

R5

1

1K

Ω

J 0.1W

2

R13

2

15K

Ω

J 0.1W

180

Ω

J 1/4W

560

Ω

J 0.1W

12K

Ω

J 0.1W

180

Ω

J 1/4W

10K

Ω

J 0.1W

10K

Ω

J 0.1W

1

R2

1

2

R1

1

2

R8

1

2

R7

1

2

R16

1

47K

Ω

J 0.1W

47K

Ω

J 0.1W

1K

Ω

J 0.1W

1K

Ω

J 0.1W

1K

Ω

J 0.1W

2

R15

1

2

R6

1

2

R4

1

2

R3

1

2

R19

1

0.51

Ω

J 1/2W

0.51

Ω

J 1/2W

2

R18

1

2

R17

1

2

R12

1

2

SEN2

SG-205

1

2

3

4

SEN1

SG-205

1

2

3

4

2

1 C9

2

1 C2

0.3µF 50V

2

1

C7

C10

10

µ

F 50V

1+

2

C11

33

µ

F 10V

0.1

µ

F 25V

1 +

2

0.1µF 25V

1

2

C1

470pF 50V

2

1

C12

100pF 50V

2

1

C4

1000pF 50V

2

1

C6

1

2 C8

0.1µF 25V

2

1

C5

1000pF 50V

1

2

C3

D1

1

2

D3

1

2

1S953/1S2075K/1S247

D5

2

1

2

F1

1A

EM01Z/SM1XN02/..

EM01Z/SM1XN02/.. EM01Z/SM1XN02/..

D2

1

ZA1

ZA2

2

+5V

+28V

+5V

0VL

0VP

+5V

0VL

-28V

0VL+5V

0VP

+30V

0V

0VL

+5V

0VL

OPTPSIN-N

OPTSCLK-N

OPTSD-P

OPTSDR-N

0VP

+30V

0VL

+5VFGFG

1

2

3

4

5

6

7

8

9

10

OPTPSIN-N

OPTSCLK-N

OPTSD-P

OPTSDR-N

0VP

+30V

0VL

+5VFGFG

1

2

3

4

5

6

7

8

9

10

DC

LS38

1

2

3

IC1

OC

LS38

9

10

8

IC1

OC

LS38

12

13

11

IC1

OC

LS38

DTA114K

2

3

1

TR1

DTA114K

2

3

1

4523

RM1

5.1K

Ω

J 1/8W

10K

Ω

J 0.1W

10K

Ω

J 0.1W

10K

Ω

J 0.1W

2

1

FAR

3

OSC1

1

2

3

4

SW1

B3F-1000

M-T3

M-T4

M-T1

M-T2

214

3

142131527

1631118261217

678

9

202122

23

PH1

VR1

T1

PH2

VR2

T2

MA1

MB1

C1

E1

MA2

MB2

C2

E2

4101

5

251928

24

VMM1

VMM2

VMM3

VMM4

VCC1

VCC2

GND1

GND2

GND3

GND4

GND5

GND6

GND7

GND8

IC3

M54646P

IC2

B543

345

6

15

16

19

17218

111213142021222324252627282930

178

9

10

A0A1A2

A3

C0C1C2C3D0D1D2

D3

E0E1E2

E3

G0G1G2

G3

F0/SI

F1/SO

F2/CK

F3/INT

IO/OS2

OS1

RES

TEST

VCC

GND

- 90 -

Figure 5-6 Multi Purpose Feeder Board (OLEV-PCB, Rev.4) (1/2)

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Connector Name :00-8263-0412-00-00

Parts Number :224A3357P0040

Ports Symbol :CN3

Pin No.

123

4

Signal Name

M-T4

M-T3

M-T2

M-T1

Location

01YB

01YC

01YB

Connector Name : TCS7698-01-201

Parts Number : 221A1622P0082

Ports Symbol : CN1

Pin No.

123456789

10

Signal Name

OPTPSIN-N

OPTSCLK-N

OPTSD-P

OPTSDR-N

0VP

+30V

0VL

+5VFGFG

Location

012B

012C

Connector Name : TCS7698-01-201

Parts Number : 221A1622P0082

Ports Symbol : CN2

Pin No.

123456789

10

Signal Name

OPTPSIN-N

OPTSCLK-N

OPTSD-P

OPTSDR-N

0VP

+30V

0VL

+5VFGFG

Location

012D

012E

012F

Figure 5-6 Multi Purpose Feeder Board (OLEV-PCB, Rev.4) (2/2)

- 91 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-7 Memory Expansion Bord (MM6-PCB, Rev.4) (1/5)

- 92 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

4.7K 1/10W

4.7K

Figure 5-7 Memory Expansion Bord (MM6-PCB, Rev.4) (2/5)

- 93 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-7 Memory Expansion Bord (MM6-PCB, Rev.4) (3/5)

- 94 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

Figure 5-7 Memory Expansion Bord (MM6-PCB, Rev.4) (4/5)

- 95 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

4.7K

Figure 5-7 Memory Expansion Bord (MM6-PCB, Rev.4) (5/5)

- 96 -

123456789XY

1

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

234 5 67 89 XY

NOMOUNT

Figure 5-8 Network interface Board (MN6-PCB, Rev.1) (1/6)

- 97 -

OKI 12i Troubleshooting Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1. OUTLINE

2. TOOLS

3. CIRCUIT DESCRIPTION

4. TROUBLESHOOTING

5. CIRCUIT DIAGRAM