OKI 16n Troubleshooting Manual

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OKIPAGE 16n
LED Page Printer

Troubleshooting Manual
with Component Parts List

Approval

All specifications are subject to change without notice.

CONTENTS

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

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

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

3.1 Outline ...................................................................................................... 2

3.2 CPU and Memory..................................................................................... 4

3.3 Reset Control ........................................................................................... 6

3.4 EEPROM Control ..................................................................................... 7

3.5 Centronics Parallel Interface .................................................................... 9

3.6 Operator Panel Control........................................................................... 10

3.7 LED Head Control .................................................................................. 11

3.8 Motor Control.......................................................................................... 13

3.9 Fuser Temperature Control .................................................................... 15

3.10 Fan Motor Control................................................................................... 18

3.11 Sensor Supervision ................................................................................ 20

3.12 Cover Open ............................................................................................ 21

3.13 Power Supply Interface .......................................................................... 22

3.14 Power Supply Board............................................................................... 23

4. TROUBLESHOOTING ..................................................................................... 25

4.1 Troubleshooting Table............................................................................ 25

4.2 Troubleshooting Flowchart ..................................................................... 29

5. CIRCUIT DIAGRAM ......................................................................................... 43

6. COMPONENT PARTS LIST ............................................................................ 73

APPENDIX A HIGH CAPACITY SECOND PAPER FEEDER (OPTION) ....... A-1

1. CIRCUIT DESCRIPTION................................................................................ A-1

2. TROUBLESHOOTING ................................................................................... A-3

3. CIRCUIT DIAGRAM ....................................................................................... A-8

4. COMPONENT PARTS LIST ........................................................................ A-11

APPENDIX B POWER ENVELOPE FEEDER (OPTION) ............................... B-1

1. CIRCUIT DESCRIPTION................................................................................ B-1

2. TROUBLESHOOTING ................................................................................... B-3

3. CIRCUIT DIAGRAM ....................................................................................... B-7

4. COMPONENT PARTS LIST ........................................................................ B-10

1. OUTLINE

This manual has been written to provide guidance for troubleshooting of the OKIPAGE 16n 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 40029801TH (ODA) and/or P/N
40029803TH (OEL) 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 (MHM2029K) is not recommended. If CPU is 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
Extension kit 4YA4046-1667G1
Connector extractor tool
Oscilloscope
Soldering iron

4PP4076-5395P1
Frequency response 100 MHz or higher
A slender tip type, 15-20 Watt

- 1 -

3. CIRCUIT DESCRIPTION

3.1 Outline

The 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.

(1) Reception control

The OKIPAGE 16n has one centronics parallel I/F port .
When optional PostScript board is installed, the printer is provided with one LocalTalk serial
I/F port. One of the two I/F ports which receives data first can be used automatically.
The other I/F port outputs a busy state.
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 16n has the following emulation mode.
Laser Jet Series IV : Hewlett Packard

Proprinter III XL : IBM
FX : EPSON
PostScript Level 2 : Adobe (Only when the PostScript board is installed additionally.)

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 -

ROM SRAM

CPU

DS8925

LS374

LS374

ROM

PSBA­(Option)

EE
PROM

*: Only when the PostScript
board (PSBA-PCB) is
installed additionally.

LOCAL TALK

*

Interface

Parallel
Interface

OKI HSP
(Option)

COM-

Paper sensor

ROM

D RAM

SIMM

(Option)

7407

+8V

-8V

SW

LSI

CPU

DA

+5V

converter

+38V

0V

Heat on

DRIVER

EE
PROM

AOLC-

SW

LED head
Operator panel

2nd tray

Envelope tray

Home micro switch

Stacker full sensor

Paper end sensor

Hopping motor

M

AOLS-

(Option)

(Option)

Paper size
detection switch

Inlet sensor 1

Inlet sensor 2

Outlet sensor

Paper out sensor

Toner sensor

Filter

circuit

Power Supply board

DRIVER

DRIVER

DRIVER

LSI

Cover
open MS

Low voltage

generation circuit

Heat on

High voltage

generation

circuit

Driver

Figure 3-1 Block Diagram

- 3 -

CH
TR

DB
SB

CB

+5V

TH1

TH2

M
M

FAN

Charge roller
Transfer roller
Developing roller
Toner supply roller
Cleaning roller

Heater

Resist motor

Drum motor

DC FAN

Thermistor

3.2 CPU and Memory

(1) CPU (MHM2029-004K-37)

CPU core : RISC CPU (MIPS R3000 compatible)
CPU clock : 31.9488 MHz
Data bus width: Exterior 32 bits, Interior 32 bits

(2) ROM (HP LaserJet IV emulation)

ROM capacity : 4 Mbytes (16-Mbit mask ROM two pieces)
ROM type : 16 Mbits (1M x 16 bits)
Access time : 100 ns

(3) ROM (Adobe PostScript emulation) (Option)

ROM capacity : 4 Mbytes (16-Mbit mask ROM two pieces)
ROM type : 16 Mbits (1M x 16 bits)
Access time : 100 ns

(4) Resident RAM

RAM capacity : 2 Mbytes (4-Mbit D-RAM four pieces)
RAM type : 4 Mbits (512k x 8 bits)
Access time : 80 ns

(5) SIMM (When the PostScript board is installed, 4 Mbytes SIMM shall be installed at the time

of installation.)
RAM capacity : Max. 32 Mbytes (1 Mbyte, 2 Mbytes, 4 Mbytes, 8 Mbytes, 16 Mbytes,

Access time : 60 ns, 70 ns, 80 ns, 100 ns

32 Mbytes)

The block diagram of CPU and memory circuits is shown in Fig. 3-2.

- 4 -

CPU

CDATA 16

~ CDATA 31

Bus

buffer

245 x 2

D15~D31

RAS0
RAS2

~RAS5

buffer

244

CDATA 0

~ CDATA 15

CADR01 ~ CADR25

CCAS0 ~ CCAS3

CRD CWR

CS0
CS2

RAS00
SIMMRAS 10, 11

SIMMRAS 20, 21

Bus

buffer

245 x 2

Bus

buffer

244 x 4

CAS0~3
RD
WR

D0~D15

A21~A2

A21~A2

A21~A2

A21~A2

HP ROM1

16 M

MASK ROM

CS
RD

HP ROM2

16 M

MASK ROM

CS
RD

PS ROM1

16 M

MASK ROM

CS
RD

PS ROM2

16 M

MASK ROM

CS
RD

*1

*1: PSBA-PCB

(Option)

RAS00

DRAM

4M

DRAM

4M

SIMM1

A10

~A23

A20~A10

RD

WR

CAS0, CAS1

RAS00

A20~A10

RD
WR

CAS2, CAS3

WR CAS0~3

SIMM2

Figure 3-2 Block Diagram of CPU & Memory

- 5 -

D0~D31

3.3 Reset Control

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

+8V

+5V

+5V

R554

4.3K

R527

2.2K

+8V

Ω

Ω

Power ON

D8
(4.3V)

R530
240K

CPU

RESET-N 72

Q25

3

+

D1

2

3 pin

C570

0.22

µ

F

2 pin

Ω

–

UPC393

1

TR2

3

2

1

ETC

Power OFF

Q25 UPC393

INPUT

Q25 UPC393

1 pin

RESET-N

+5V

- 6 -

3.4 EEPROM Control

The 93LC46A 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 (SERIALDATA-P) in serial transmission synchronized with a clock signal from the CPU.

CPU

SERIALDATA-P

154

EEPRMCS0-P

150

EEPRMCS1-P

165

EEPRMCLK-P

151

93LC46A

3

DI DO

1

CS

NM93C66N

3

DI DO

1

CS

SK

2

SK

2

4

Q12
(COM-PCB)

4

06H
(PSBA-PCB)

The EEPROM operates in the following instruction modes

Instruction Start Bit

Operation

Code

Address

93LC46A

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

- 7 -

CS
SK

CS

SK

DI

DO

Write cycle timing (WRITE)

A5/A7

101

A4/A6

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

A5/A7 A4/A6

A1 A0

A5/A7

A4/A6

D1 D00

- 8 -

3.5 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.

87, 88, 91 to 96

CPU

97

85

86

83

81

79

80

82

84

CENTDATA1-P to CENTDATA8-P

STB-N
BUSY-P

ACK-N

PE-P

SEL-P

FAULT-N

IPRIME-N

SELIN-N

AUTOFEED-N

Q26

2 to 9

11

10

12

13

32

31

36

+5V 14

CENT

DATA8-P
DATA1-P
STB-N

1

BUSY-P

ACK-N
PE-P

SEL-P

FAULT-N

IPRIME-N
SELIN-N
AUTOFEED-N

to

CENTDATA
1~8-P

STB-N

BUSY-P

ACK-N

0.5 µs min.

0.5 µs min.

0.5 µs max.

0 min.

10 µs max.

0.5 µs min.

0.5 µs min.

0 min.

FU2

1A

0 min.

18

+5V

0 min.

- 9 -

3.6 Operator Panel Control

The operator panel consists of the following circuits.

COM OLNC-

CPU

SERIALDATA-P
154

PDATAIN-P
158

PSCLK-N
153

PLD-N
152

3
4

6

1

Flexible

Cable

CN1PANEL

4

3

1
6

(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 (SERIALDATA-P) together with the shift
clock signal (PCLK-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.

BU6152S

LSI

DB4~DB7

RS
R/W

E

LED

44780
LCD
Control
Driver

Zebra Rubber

LCD

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.

SERIALDATA-P

PSCLK-N

PDATAIN-P

PLD-N

bit 0 bit 7

Command (first)

bit 0

Command response (first) Command response (second)

bit 7

Command (second)

- 10 -

3.7 LED Head Control

COM-

CPU 31701-040

OSTACK-N

107

137

OSTREQ-N

105

138

FSYNC-N

89

145

LSYNC-N

90

146

12

10

4

3

2

5

9

8

7

6

HDD3-P

HDD2-P

HDD1-P

HDD0-P

HDCLK-P

HDDLD-P

HDSTB4-N

HDSTB3-N

HDSTB2-N

HDSTB1-N

HEAD 1

10

11

7

8

13

5

1

2

3

4

LED Head

EEPROM Driver IC

5

4

8

7

2

10

14

13

12

11

Driver IC

39

Driver IC

38

38

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 HDCLK-P signal as the sync signal.

Driver IC

1

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 HDSTBn-N signal is output. There are
four HDSTBn-N signals (HDSTB1-N, HDSTB2-N, HDSTB3-N, and HDSTB4-N), each of which
controls the corresponding driver for 1248 LEDs (4992/4).

The four HDSTBn-N 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 HDSTBn-N signal, the transfer of the
data of the next line can be started.

- 11 -

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

HDCLK-P
HDD0-P

HDD1-P
HDD2-P

1

59
2 6 10 4986 4990
3

11 4987 4991

7

4985

4989

✰

The LED lights
when the head
data is HIGH.

HDD3-P

HDCLK-P
HDD0-P

HDD1-P
HDD2-P

HDD3-P

HDDLD-P
HDSTB1-N

HDSTB2-N
HDSTB3-N
HDSTB4-N

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
1-1280 lit

LEDs
1281-2560 lit

Print activation timing
for the 2nd line

Print activation timing
for the final line

- 12 -

3.8 Motor Control

(1) Resist motor and Drum motor

A resist motor and a drum motor are driven by means of control signals from the CPU or the
LSI (31701) and a driver IC.

COM- AOLC-

POWER

CPU A2918

31701
LSI

DMPH1-P 12

132

DMON-N 9

127

DMPH2-P 11

131

RMON-N

128

0STPH1-P 6

25

0STPH2-P 8

20

7

a. Drum motor

CN9

XDMPH1-P 13

12

DMON-N 7,14

9

XDMPH2-P 8

11

RM-PMPHP1-P 13
7

RMON-N 7,14

6

RM-PMPHP2-P 8
8

IC1

IC2

A2918

+38V

+38V

DMPH1-N 1

1

DMPH1-P 2

17

DMPH2-N 3

2

DMPH2-P 4

4

RMT1-P 1

1

RMT2-P 2

17

RMT3-P 3

2

RMT4-P 4

4

CN6

CN7

Drum
Motor

M

Resist

Motor

M

DMON-N

XDMPH1-P

XDMPH2-P

Rotation

T0 T1 T2 T3

Forward rotation

Operation at normal speed: T0 to T3 = 918

Reverse rotationStop

µ

s

- 13 -

RMON-N

RM/PMPH1-P

b. Resist motor

RM/PMPH2-P

T0 T1 T2 T3

Rotation Forward rotation

Stop

Hopping drive

Operation at normal speed: T0 to T3 = 918

c. Drive control

Time T0 to T3 determines the motor speed, while the phase different direction between
phase signals XDMPH1-P and XDMPH2-P (0STPH1-P and 0STPH2-P) determines the
rotation direction. DMON-N and RMON-N signals control a motor coil current.

(2) Hopping motor

The hopping motor is driven by the driver IC according to the control signal from the CPU. The
hopping motor drives either the hopping roller of the 1st tray or the hopping roller of the front
feeder depending on its rotation.

COM-

CPU

RM/PMPH2-P

133

RM/PMPH1-P

134

PMON-N

126

15

14

2

+38V

M54646

4

10

25
19

PMT1-P

PMT2-P

PMT3-P
PMT4-P

FRONT

µ

s

Hopping

Motor

M

PMON-N

RM/PMPH1-P

RM/PMPH2-P

Rotation

T0 T1 T2 T3

Forward rotation

Operation at normal speed: T0 to T3 = 918

- 14 -

Reverse rotationStop

µ

s

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 IC501 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 IC501 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.

Ther-

mistor

Heater

Thermostat

TH1

TH2

CN2

1
2

Power Supply Board

5V

5V OFF

signal

-

+

40

Thermistor
breakdown

detector

circuit

5V

PC1

COM-

IC501 CPU

Power
supply

interface

ACIN

HEATON-N

116

TR503

+5VD

+5V

TR1

- 15 -

The temperature control is described below.

Vt

Temperature

˚C

V2

V1

ON OFF ON OFF ONHEATON-N

V2 194˚C
V1

190˚C

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

(Standard temperature)

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

- 16 -

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 THERMCHK-N signal is turned on to turn transistor Q511 on. As a
result, the thermistor serial resistance is varied to increase the reading resolution.

5V

Ther­mistor

R534

5V

R551

Q511

THERMCHK-NFROM LSI (31701)

IC501

A/D

converter

- 17 -

3.10 Fan Motor Control

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

COM-

CPU

FANON-P
FANALARM-N

Q26

QC

109

FANALARM-N

110

+5VD

FANON-P

AOLC

Power Supply Board

+38V

Q201

Q109

FAN Motor

M

1 sec max

0.7 sec max

FAN MOVE

Lock

- 18 -

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 30 seconds after the occurrence of a paper jam, size error, or
fuse error.

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

Drum motor

Heater control

Fan motor

ON

Heater

hold time

8 min.

or 0 min.

Rotation state

OFF

OFFON

30 sec.

Stop state

- 19 -

3.11 Sensor Supervision

The paper sensor signal (WRSENSE-N) and inlet sensor 1 signal (PSIN1-N) enter the CPU
through their dedicated own lines. When the state of the WRSENSE-N signal or PSIN1-N signal
is changed, the paper sensor state is read into the CPU at the interrupt timing (INT3). The state
of other sensors is read into the CPU through the power supply interface at the CPU sense timing.

COM- AOLC Power Supply Board

Paper End Sensor

CPU 31701

LSI

123
120

164

(PSIN1-N)

Power supply interface

WRSENSE-N

PSIN1-N

To option

Power
supply
control

LSI

Inlet Sensor 2

Toner Sensor

Outlet Sensor

Paper Sensor

Inlet Sensor 1

+5V

PC 504

PC 505

PC 506

PC 501

PC 502

PC 503

- 20 -

3.12 Cover Open

When the cover is opened, a cover open microswitch is opened. This makes a XCOVEROPEN­N signal low, then off the +5VD, thereby the CPU detects the open state. Furthermore, opening
the cover stops applying a +38V power to the high voltage power supply unit, resulting in stopping
all high voltage outputs.

COM-

CPU

+5V

125

+5VD

XCOVEROPEN-N

+5VD

0V

Power Supply Board

+38V

XCOVEROPEN-N

Cover Open
Microswitch

+38V

Cover close Cover open

Low Voltage

Supply Unit

Power

High

Voltage

Power
Supply

Unit

High

voltage

output

- 21 -

3.13 Power Supply Interface

The power supply interface is an 8-bit clock synchronous serial interface between the synchronous
serial I/O ports of LSI (31701) and the power control LSI in the power supply board under the control
of the CPU.

When the control section transmits a command on OSTTXDATA-N signal in synchronization with
the clock (OSTSCLK-N) to the power supply board, this power supply board transmits a response
on OSTRXDATA-N signal in synchronization with the same clock to the control section.

The commands include the control data of the high-voltage power supply, sense command, etc.
The responses include sensor information, fuser unit temperature information, etc.

COM- AOLC Power Supply Board

POWER CN9 CN8 CN3

CPU

Time chart

Control section

DIN

SCLK

DATA-OUT

SQCR

31071

LSI

OSTTXDATA-N

26

OSTSCLK-N

14

OSTRXDATA-N 34

87

OSTTXLD-N

86
15

OSTRXLD

Sequence clear

OSTLD-N

33

33

35

35
34
36

36

3 DATA OUT
2 SCLK

4 DIN
1 SQCR

Data write

LSB

b0 b1 b2 b3 b4 b5 b6 b7

b0 b1 b2 b3 b4 b5 b6 b7

Command

Power
supply
control

LSI

Sequence clear

MSB

LSI internal

Judge of read/write

Serial I/F section clear

command and read

- 22 -

port latch

Command decode

Set high voltage out

port in write command

Serial I/F section clear

3.14 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 +38V 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

SW

F1

Noise

filter

ACIN

circuit

Switching

circuit

Rectifying/

smoothing/

regulating

circuit

+8V
–8V

+5V

POW ON

+ 5V

+ 38V

+ 8V
– 8V

Switching

control

circuit

Overvoltage/

overcurrent

detector

circuit

Rectifying/

smoothing/

regulating

circuit

+38V

- 23 -

(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 (IC501) and outputs high-frequency pulses to the
corresponding high-voltage generating circuits through pins 12, 13, 14, 15 and 16 of LSI
(IC501). It supplies +38V to each high-voltage generating circuit as the source voltage. When
the cover is open, the supply of +38V 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 Board

+38V

CPU LSI

Power supply

interface

IC501

12

13

LSI

14
15

DB+

DB–

CB

TR

SB
DB

CB

TR

High-voltage

outputs

High

-frequency
pulse output pins

12

13

14

15

16

SB

+450V

–360V

16

DB TR CH

+300V

–240V

CB

+220V

+400V

CH

+4.415KV

–1.3KV

-1.3KV

Part with slant line: no output

CH

- 24 -

4. TROUBLESHOOTING

4.1 Troubleshooting Table

(A) Power/sensor board

Note:

The malfunction of the power supply is not repaired by an agency. The abnormality
to be treated here is taht of sensors only.

Failure LCD Message

A paper input jam occurs frequently.

A paper feed jam occurs frequently.

A paper-exit jam occurs frequently.

A paper size error occurs frequently.

The message "PAPER OUT" remains
displayed on the LCD.

The message "COVER OPEN" remains
displayed on the LCD.

PAPER INPUT JAM
CHECK ******

PAPER FEED JAM
CHECK ******

PAPER EXIT JAM
REMOVE THE PAPER

ERROR PAPER SIZE
CHECK ******

PAPER OUT
********* TRAY1

COVER OPEN

Flowchart

No.

A - 1

A - 2

A - 3

A - 4

A - 5

A - 6

The message "TONER LOW" remains
displayed on the LCD.

The message "TONER SENSOR" remains
displayed on the LCD.

A thermistor open error occurs frequently.

A thermistor short error occurs frequently.

TONER LOW

TONER SENSOR

ERROR CONTROLLER
72

ERROR CONTROLLER
73

- 25 -

A - 7

A - 8

A - 9

A - 10

(B) Main control board (COM-) (1/2)

Failure LCD Message

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

Program ROM error

Font ROM error

Resident RAM error

EEPROM error

Option RAM error

ERROR CONTROLLER
10

ERROR CONTROLLER
20

ERROR CONTROLLER
30

ERROR CONTROLLER
40

ERROR CONTROLLER
60

Flowchart

No.

B - 1

B - 2

B - 3

B - 4

B - 5

B - 6

Cooling fan error

Thermistor open error

SSIO error

Opepanel I/F time out error

Option tray I/F timeout error

ERROR CONTROLLER
70

ERROR CONTROLLER
72

ERROR CONTROLLER
74

ERROR CONTROLLER
80

ERROR CONTROLLER
81

B - 7

B - 8

B - 9

B - 10

B - 11

- 26 -

(B) Main control board (2/2)

Failure LCD Message

Watchdog timer timeout

Program error

Processor error

Cover open occurs frequently

Receive buffer overflow occurs frequently

Paper input JAM occurs

ERROR CONTROLLER
90

ERROR CONTROLLER
F*

ERROR CONTROLLER
0*

COVER OPEN

ERROR RECEIVE
BUFFER OVERFLOW

PAPER INUT JAM
CHECK ******

Flowchart

No.

B - 12

B - 13

B - 14

B - 15

B - 16

B - 17

Paper size error occurs

The message "STACKER FULL REMOVE
THE PAPER" remains displayed on the LCD

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

ERROR PAPER SIZE
CHECK ******

STACKER FULL
REMOVE THE PAPER

B - 18

B - 19

B - 20

- 27 -

(C) Operator panel board (OLNC-)

Failure LCD Message

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

The key switch operation on the operator
panel is disabled.

(D) Connection/Driver board (AOLC-)

Failure LCD Message

Paper feed JAM occurs

(E) Cassette switch board (AOLS-)

Failure LCD Message

Paper size error occurs

PAPER FEED JAM
CHECK ******

ERROR PAPER SIZE

Flowchart

No.

C - 1

C - 2

Flowchart

No.

D - 1

Flowchart

No.

E - 1

CHECK TRAY1

(F) PostScript board (PSBA-)

Failure LCD Message

Option software ROM error

ERROR CONTROLLER
50

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

Flowchart

No.

F - 1

F - 2

- 28 -

4.2 Troubleshooting Flowchart

A-1 A paper input jam occurs frequently.

• Is PC503 (Inlet Sensor 1) operating normally?

• No Replace PC503.

▼

• Yes Is PC505 (Inlet Sensor 2) operating normally?

• No Replace PC505.

▼

• Yes Replace CN3.

A-2 A paper feed jam occurs frequently.

• Is PC503 (Inlet Sensor 1) operating normally?

• No Replace PC503.

▼

• Yes Is PC505 (Inlet Sensor 2) operating normally?

• No Replace PC505.

▼

• Yes Is PC502 (Paper Sensor) operating normally?

• No Replace PC502.

▼

• Yes Is PC501 (Outlet Sensor) operating normally?

• No Replace PC501.

▼

• Yes Replace CN3.

A-3 A Paper exit jam occurs frequently.

• Is PC501 (Outlet Sensor) operating normally?

• No Replace PC501.

▼

• Yes Replace CN3.

- 29 -

A-4 A paper size error occurs frequently.

• Is PC503 (Inlet Sensor 1) operating normally?

• No Replace PC503.

▼

• Yes Is PC505 (Inlet Sensor 2) operating normally?

• No Replace PC505.

▼

• Yes Replace CN3.

A-5 The message "PAPER OUT" remains displayed on the LCD.

• Is PC504 (Paper End Sensor) operating normally?

• No Replace PC504.

▼

• Yes Replace CN3.

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

• Is Cover Open Switch operating normally?

• No Replace Cover Open Switch.

▼

• Yes Replace CN3.

A-7 The message "TONER LOW" remains displayed on the LCD.

• Is PC506 (Toner Sensor) operating normally?

• No Replace PC506.

▼

• Yes Replace Cn3.

A-8 The message "TONER SENSOR" remains displayed on the LCD.

• Is PC506 (Toner Sensor) operating normally?

• No Replace PC506.

▼

• Yes Replace CN3.

- 30 -

A-9 A thermistor OPEN error occurs frequently.

• Is the heater lamp lit?

• No Failure of PC1 (photocoupler)

▼

• Yes Failure of IC501

A-10 A thermistor short error occurs frequently.

• Failure of IC501

- 31 -

B-1 Abnormal message display on the LCD.

• Replace Q18, Q19

▼

• OK?

▼

• No Is the 8.000 MHz clock signal being put out to pin 1 of OSC1?

• No Replace OSC1.

▼

• Yes Is the output at pin 2 (RESET-N) of TR2
(DTC114EK) normal? (Refer to [3.3 Reset Control] page 7.)

• No Replace TR2 (DTC114EK).

▼

• OK?

▼

• No Replace Q25 (UPC393G2)

▼

• Yes Failure of Q13 (MHM2029K-004K-37)

B-2 Program ROM error (ERROR CONTROLLER 10)

• Replace Q18, Q19

B-3 Font ROM error (ERROR CONTROLLER 20)

• Replace Q18, Q19

B-4 Resident RAM error (ERROR CONTROLLER 30)

• Are negative pulses being put out to Pin 8 (RAS00-N) of Q1, Q2, Q3, Q4?

• No Are negative pulses being put out to Pin 2 (RAS0-N) of Q20 (74LS244)?

• No Failure of Q13 (MHM2029K-004K-37)

▼

• Yes Failure of Q20 (74ALS244)

▼

• Yes Are negative pulses being put out to Pins 23 (CAS0-N, CAS2-N, CAS1-N, CAS3­N) of Q1, Q2, Q3, Q4?

• No Are negative pulses being put out to Pins 71, 70, 69, 68 (CCAS0-N,

CCAS1-N, CCAS2-N, CCAS3-N) of Q13 (MHM2029K-004K-37)?

• No Failure of Q13 (MHM2029K-004K-37)

▼

• YES Replace Q15 (74ALS244): When CCAS0-N, CCAS1-N is no good.

Replace Q11 (74ALS244): When CCAS2-N, CCAS3-N is no good.

▼

• Yes Replace Q1, Q2, Q3, Q4.

- 32 -

B-5 EEPROM error (ERROR CONTROLLER 40)

• Replace Q12 (93LC46A).

▼

• OK?

▼

• No Failure of Q13 (MHM2029K-004K-37)

B-6 Option RAM error (ERROR CONTROLLER 60)

• Are negative pulses being pin out to Pins 33, 34, 44, 45 (SIMMRAS10-N, SIMMRAS11-

N, SIMMRAS20-N, SIMMRAS21-N) of SIMM1, SIMM2?

• No Replace Q20 (74ALS244).

▼

• OK?

▼

• No Failure of Q13 (MHM2029K-004K-37)

▼

• Yes Replace SIMM.

B-7 Cooling fan error (ERROR CONTROLLER 70)

• Is the fan rotating?

• No Is +38V power being supplied to Pin 1 (FAN POW) of Connector (CN5)

▼

• Yes Replace the fan.

in Power/sensor board?

• No Is the output at Pin 17 (FANON) of Connector (Power) being
at high level?

• No Is the output at Pin 109 (FANON-P) of Q13

(MHM2029K-004K-37) being at high level?

• No Failure of Q13 (MHM2029K-004K-37)

▼

• Yes Replace Q26 (7407).

▼

• Yes Replace AOLC board or Power/sensor board.

• Yes Is the output at Pin 18 (FANALARM) of Connector (Power)

▼

being at high level?

• No Failure of Q13 (MHM2029K-004K-37)

▼

• Yes Replace the fan.

- 33 -

B-8 Thermistor OPEN error (ERROR CONTROLLER 72)

• Is the heater lamp lit?

• No Is pin 31 of the connector (power) in the OFF state?

• No Failure of the heater or the power/sensor board

▼

• Yes Is pin 3 of TR1 (transistor) in the OFF state?

• No Replace TR1 (transistor).

▼

• Yes Is pin 3 of TR503 (transistor) in the OFF state?

• No Replace TR503 (transistor).

▼

• Yes Failure of Q13 (MHM2029K-004K-37)

▼

• Yes Failure of the power/sensor board

B-9 SSIO error (ERROR CONTROLLER 74)

• Is the 32.0000 MHz clock signal being put out to pin 3 of OSC2?

• No Replace the OSC2

▼

• Yes Are OSTTXDATA-N (Power connector-33), OSTSCLK-N (Power connector-35)
and OSTLD-N (Power connector-36) operating normally?

• No Replace Q23 (31701-040)

▼

• Yes Failure of the power/sensor board.

B-10 Opepanel I/F Timeout error (ERROR CONTROLLER 80)

• Is the connection of connector (PANEL) properly?

• No Replace connector (PANEL).

▼

• Yes Failure of Q13 (MHM2029K-004K-37)

- 34 -

B-11 Option tray I/F Timeout error (ERROR CONTROLLER 81)

• Is the connection of connector (2nd tray) properly?

• No Replace connector (2nd tray).

▼

• Yes Is the connection of connector (envelope) properly?

• No Replace connector (envelope).

▼

• Yes Failure of Q13 (MHM2029K-004K-37)

B-12 Watchdog timer timeout (ERROR CONTROLLER 90)

• Replace Q18, Q19.

▼

• OK?

▼

• No Failure of Q13 (MHM2029K-004K-37)

B-13 Program error (ERROR CONTROLLER F*)

• Replace Q18, Q19.

▼

• OK?

▼

• No Failure of Q13 (MHM2029K-004K-37)

B-14 Processor error (ERROR CONTROLLER 0*)

• Replace Q18, Q19.

▼

• OK?

▼

• No Failure of Q13 (MHM2029K-004K-37)

- 35 -

B-15 Cover OPEN occurs frequently.

• Is the signal at Pin 125 (+5VD) of Q13 (MHM2029K-004K-37) being at low level?

• Yes Is the signal at Pin 3 of TR4 being at high level?

• No Replace TR4.

▼

• Yes Is the signal at Pin 3 of TR501 being at low level?

• No Replace TR501.

▼

• Yes Is the signal at Pin 30 of Connector (Power) being at high level (30V)?

• Yes Replace Connector (Power).

▼

• No Failure of an element other than COM-PCB

▼

• No Failure of Q13 (MHM2029K-004K-37)

B-16 ERROR RECEIVE BUFFER OVERFLOW occurs frequently.

[Centronics I/F]

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

• No Is the BUSY signal put out to Pin 1 (BUSY-P) of Q26 (7407)?

• Yes Replace Q26 (7407).

▼

• No Failure of Q13 (MHM2029K-004K-37)

▼

• Yes Make sure of setting of a host computer.

- 36 -

B-17 PAPER INPUT JAM occurs.

• Is the hopping motor rotating normally?

• No Are the normal waveforms of the RM/PMPH1-P and RM/PMPH2-P

signals as shown in section 3.9 (2) output to pins 14 and 15 of Q5
(M54646P) respectively?

• No Failure of Q13 (MHM2029K-004K-37)

▼

• Yes When the motor is rotating, does the output to pin 2 and 27 of Q5
(M54646P) go HIGH?

• No Is the normal waveform of the PMON-N signal as shown in

▼

• Yes Replace TR502 (DTA114K).

▼

• Yes Is the voltage at pin 3, 11, 18 and 26 of 02D (M54646P) +38V?

• No Replace AOLC board or Power/sensor board.

▼

• Yes Replace Q5 (M54646P).

section 3.9.2 output to pin 3 of TR502 (DTA114K)?

• No Failure of Q13 (MHM2029K-004K-37)

▼

• Yes Replace Q13 (MHM2029K-004K-37).

▼

• OK?

▼

• No Failure of the power/sensor board.

B-18 PAPER SIZE ERROR occurs.

• Do the output signals (PAPER SIZE 0 to 3 signals) at pins 97, 96, 95, and 94 of Q23
(31701-040) comply with the following table?

Paper size Pin 97 Pin 96 Pin 95 Pin 94
Letter L H H H
Executive L H L H
A4 L L H H
Legal 14 H H H L
Legal 13 H L H H
B5 H H L H
A5 H H L L
A6 H L L H

• No Check to see if the paper size SW of the paper tray is set properly.

▼

• Yes Replace Q23 (31701-040).

- 37 -

B-19 The message "STACKER FULL REMOVE THE PAPER" remains displayed on the LCD.

• Is the output signal (STKFULL-P signal) at pin 119 of Q13 (MHM2029K-004K-37) being
at low level?

• No Check the stacker full sensor.

▼

• Yes Failure of Q13 (MHM2029K-004K-37)

B-20 Data sent through the centronics I/F cannot be received.

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

• No Is the signal at Pin 1 (BUSY-P) of Q26 (7407) changed as shown
below, at data reception?

ON-LINE OFF-LINE

BUSY-P Low High

• No Failure of Q13 (MHM2029K-004K-37)

▼

• Yes Replace Q26 (7407).

▼

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

• No Make sure of the connection of I/F cable or the operation of the host
computer.

▼

• Yes Are the signals at Pin 3 (ACK-N), Pin 11 (FAULT-N) of Q26 (7407) being
respectively at low level and high level in on-line mode?

• Yes Replace Q26 (7407).

• OK?

▼

▼

• No Failure of Q13 (MHM2029K-004K-37)

• No

- 38 -

C-1 Abnormal message display on the LCD (no display, display some dot lit, etc.).

• Replace IC2 (HD44780).

▼

• OK?

▼

• No Replace IC3 (5259).

▼

• OK?

▼

• Replace IC1 (BU6152S).

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

• Are the level of the signal at Pins, 3, 7, 10, 18, 23, 31 of IC1 (BU6152S) changed from
the high level to the low one by the key switch pushing?

• No Replace SW1 to SW8.

▼

• Yes Is the connection of CN1 correct?

• No Connect it correctly.

▼

• Yes Replace IC1 (BU6152S).

- 39 -

D-1 PAPER FEED JAM occurs.

• Is the drum motor rotating normally?

• No Are the normal waveforms of XDMPM1-P and XDMPM2-P as shown
in section 3.9. (1) output to pins 13 and 8 of IC1 (A2918) respectively?

• No Failure of Main control board (COM-PCB)

▼

• Yes When the drum motor is rotating, is the DMON-N signal at pin 7 of IC1
(A2918) LOW?

• No Failure of Main control board (COM-PCB)

▼

• Yes Replace IC1 (A2918).

▼

• Yes Is the resist motor rotating normally?

• No Are the normal waveforms of RM/PMPH1-P and RM/PMPH2-P
signals as shown in section 3.9. (1) output to pins 13 and 8 of IC2
(A2918) respectively?

• No Failure of Main control board (COM-PCB)

▼

• Yes When the resist motor is rotating, is the RMON-N signal at pin 7 of IC2
(A2918) LOW?

• No Failure of Main control board (COM-PCB)

▼

• Yes Replace IC2 (A2918).

▼

• Yes Failure of an element other than AOLC board

- 40 -

E-1 PAPER SIZE ERROR occurs.

• Does the PAPER SIZE 0 signal at pin 4 of CN11 go LOW when SW1 is depressed and
does the same signal go HIGH when SW1 is not depressed?

• No Replace SW1.

▼

• Yes Does the PAPER SIZE 1 signal at pin 3 of CN11 go LOW when SW2 is

depressed and does the same signal go HIGH when SW2 is not depressed?

• No Replace SW2.

▼

• Yes Does the PAPER SIZE 2 signal at pin 2 of CN11 go LOW when SW3 is

depressed and does the same signal go HIGH when SW3 is not depressed?

• No Replace SW3.

▼

• Yes Does the PAPER SIZE 3 signal at pin 1 of CN11 go LOW when SW4 is

depressed and does the same signal go HIGH when SW4 is not depressed?

• No Replace SW4.

▼

• Yes Failure of an element other than AOLS board

- 41 -

F-1 Option software ROM error (ERROR CONTROLLER 50)

• Replace 02C, 02D.

F-2 Data sent through the LOCALTALK I/F cannot be received.

• Replace 02E.

▼

• OK?

▼

• No Is the 14.7456 MHz clock signal being put out to pin 1 of OSC1?
Is the 3.6864 MHz clock signal being put out to pin 2 of OSC1?

• No Replace OSC1.

▼

• Yes Are negative pulses being put out to pins 22, 24 of 02E and pins 20, 22, 27 of
02G?

• No Replace 05G.

▼

• Yes Replace 02G.

▼

• OK?

▼

• No Replace 01B or 01D.

- 42 -

5. CIRCUIT DIAGRAM

Figure 5 - 1 Main Controller PCB (COM-1/18) (Rev. 4)
Figure 5 - 2 Main Controller PCB (COM-2/18) (Rev. 4)
Figure 5 - 3 Main Controller PCB (COM-3/18) (Rev. 4)
Figure 5 - 4 Main Controller PCB (COM-4/18) (Rev. 4)
Figure 5 - 5 Main Controller PCB (COM-5/18) (Rev. 4)
Figure 5 - 6 Main Controller PCB (COM-6/18) (Rev. 4)
Figure 5 - 7 Main Controller PCB (COM-7/18) (Rev. 4)
Figure 5 - 8 Main Controller PCB (COM-8/18) (Rev. 4)
Figure 5 - 9 Main Controller PCB (COM-9/18) (Rev. 4)
Figure 5 - 10 Main Controller PCB (COM-10/18) (Rev. 4)
Figure 5 - 11 Main Controller PCB (COM-11/18) (Rev. 4)
Figure 5 - 12 Main Controller PCB (COM-12/18) (Rev. 4)
Figure 5 - 13 Main Controller PCB (COM-13/18) (Rev. 4)
Figure 5 - 14 Main Controller PCB (COM-14/18) (Rev. 4)
Figure 5 - 15 Main Controller PCB (COM-15/18) (Rev. 4)
Figure 5 - 16 Main Controller PCB (COM-16/18) (Rev. 4)
Figure 5 - 17 Main Controller PCB (COM-17/18) (Rev. 4)
Figure 5 - 18 Main Controller PCB (COM-18/18) (Rev. 4)
Figure 5 - 22 Connection/Driver PCB (AOLC-1/2) (Rev. 6)
Figure 5 - 23 Connection/Driver PCB (AOLC-2/2) (Rev. 6)
Figure 5 - 24 Operation Panel PCB (OLNC-1/3) (Rev. 3)
Figure 5 - 25 Operation Panel PCB (OLNC-2/3) (Rev. 3)
Figure 5 - 26 Operation Panel PCB (OLNC-3/3) (Rev. 3)
Figure 5 - 27 Cassette Switch PCB (AOLS-1/1) (Rev. 6)
Figure 5 - 28 PostScript PCB (PSBA-1/4) (Rev. 3)
Figure 5 - 29 PostScript PCB (PSBA-2/4) (Rev. 3)

- 43 -

Figure 5 - 30 PostScript PCB (PSBA-3/4) (Rev. 3)
Figure 5 - 31 PostScript PCB (PSBA-4/4) (Rev. 3)

- 44 -

6. COMPONENT PARTS LIST

Main Controller PCB (COM-PCB) (Rev. 4)
Connection/Driver PCB (AOLC-PCB) (Rev. 6)
Operation Panel PCB (OLNC-PCB) (Rev. 3)
Cassette Switch PCB (AOLS-PCB) (Rev. 6)
PostScript PCB (PSBA-PCB) (Rev. 3)

- 74 -

1
5

PANEL

ENVELOPE

17

C8

2NDTRAY

17

R75

2

R74

6

BF7

FRONT

C7

72 38

71 37

72 38

71 37

FU5

C18

Q2 Q4

C17

Q1 Q3

R28

R19

R27

R18

R26

R17

R25

R16

R24

R15

R23

R14

R22

R13

R21

R12

R1

C12

R20

R4

BF10

15

BF16

1

51

PS

C14

50

100

Q14 Q15

IC1

R63

C21

R62

TR3

EM33

R64 R65

OSC1

BF6

Q12

19

C4

Q5

36 2

36 2

C20

C19

35 1

35 1

R35
R34

C5

Q7

Q9 Q11

Q6 Q8 Q10

SIMM2

SIMM1

R61

R60

BF15

A1(1)

C1(2)

MUPIS

Q19

Q18

A32(B3)

C32(B4)

C15

Q13

R49

R51

STKFULL

R36

R50

R54

R52

R53

C6

C2

Q23

11 1

HEAD2

12 2

214

HEAD1

113

EM12
EM11

OSC2

EM10

EM9
EM8

R69

R80

R66

D1 TR4
D8

TR1

R82

R33

POWER

Q21

Q20

C10

R77

Q22

R73

R81

R58

R57

BF2

1

19

BF8

C11

CENT

Q26

18

36

R72

R71

FU2

R68

C16

Q25

TR2

C3

EM1
EM2
EM5
EM3
EM4

1253

4786

APTK

R524
R526

D501

R544

C563

R541

R523
R525

R508
R543

R545

R542
R507

R546

R537
R549

R548

R503

C503

R720

R716

C509

R547

R710

R709

R719

R721

TR501

R511

R717

R554

R775

R718

D507

R527

C571

R763

R504

R724

R540

C537

C548

R539

C549

TR503

C559

R659

R530

R813

R553

R808

R653

R561

C577 C538

R519

R711

R780 R521

R713

C536

R660

C578

C570

R766

C619

R827

R826

R825

R634

R556

C501

R560

R637

R638

R627

R816

R832

R520

R518

R714

R715

R662

R538

C583

C535 C502 C575

C582

C581

R765

R764

R767

C589

C588

C587

C586

R533

R534

R768

R820

R824

R823

R822

R821

R682
R628
R635

R683

R639

R772

R819

R735
R640
R558

C576R661

R773

R769

R818

R736

R557

R817

C539

R771

R613

C601

C527

R774

R804

R737C526

R612

R614

R513

R636

R654

R517R515

R655
R535

R652

C602

R562

R643

R615

R656

R651

C534

R644

R616

R516

R646

R647

R803R723

R770

R514

R645

R681

C573

R621

R624

R802

R744

R680

R622

R631

R745

R679

R623

R625

R678

R630

R632

C542

C572

R626

C511

C531

R633

R685

R688

R684

R691

C605

C504

C512

R690

R686

C517

R689

R687

C518

C604

C13R8R9

R734

R672

R673

C567

C608

R733

R668

R671

R674

R667

R669

R675

R665

R670

R10

R11R5R7R3R2R6R32

C562

R666

R664

R585

R586

R584

R577

C541

R676

R677

R578

R583

R575

R576

R581

R573

R574

R508

C507

R571

R572

R579

R580

R502R501

R570

R568

C547

R569

R593

R594

R566R582

C558

R567

R591

R592

R565

R589

R590

C505

R563

R587

R588

R618

R619

R564

C545

C506

TR502

R708

R522

C606

R512

R506

R595

R779

R555

R536

R761

C599

C598

R762

R778

C597

C596

C615
C614

C613

R722

R777

C595
R528
C611
C610

R505
C609

R776

C612
R801

R529C514C607

COM-Printed Circuit Board Rev. 4

(40030302 - 1/2)

- 75 -

COM-Printed Circuit Board Rev. 4

(40030302 - 2/2 - 1/7)

REF.

NO.

1

2

3

4

5

6

7

8

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

D507

D1, D501

D8

R65

R62

R61

R20

R1-R4, R36, R501­R506, R537, R542,
R764-R767, R802,
R803

SS100MA80VACP
Signal DI (CP)

SS100MA80VKCP
Signal DI (CP)

RD4.3M-B3
Zenor DI (CP)

RM73B2A105F
RN Resistor (CP)

RM73B2A181F
RN Resistor (CP)

RM73B2A471F
RN Resistor (CP)

RM73B2A101J
RN Resistor (CP)

RM73B2A102J
RN Resistor (CP)

611A0000N0001

611A0000N0002

613A0233M0092C

323A5003F0105

323A5003F0181

323A5003F0471

323A5003J0101

323A5003J0102

1

2

1

1

1

1

1

19

9

R5, R8-R11, R80,
R507, R508, R724

10

R74, R75

11

R511, R512, R723

12

R709

13

R513

14

R514-R517, R522

15

R12-R19, R523­R526, R664-R674,
R676-R691

16

R527

RM73B2A103J
RN Resistor (CP)

RM73B2A122J
RN Resistor (CP)

RM73B2A153J
RN Resistor (CP)

RM73B2A182J
RN Resistor (CP)

RM73B2A201J
RN Resistor (CP)

RM73B2A202J
RN Resistor (CP)

RM73B2A220J
RN Resistor (CP)

RM73B2A222J
RN Resistor (CP)

323A5003J0103

323A5003J0122

323A5003J0153

323A5003J0182

323A5003J0201

323A5003J0202

323A5003J0220

323A5003J0222

9

2

3

1

1

5

39

1

- 76 -

COM-Printed Circuit Board Rev. 4

(40030302 - 2/2 - 2/7)

REF.

NO.

17

18

19

20

21

22

23

24

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

R528, R529, R801

R773, R774

R530

R63

R533-R536, R653

R737

R21-R28, R64, R539­R541, R543-R549

R553, R761, R762

RM73B2A241J
RN Resistor (CP)

RM73B2A242J
RN Resistor (CP)

RM73B2A244J
RN Resistor (CP)

RM73B2A270J
RN Resistor (CP)

RM73B2A272J
RN Resistor (CP)

RM73B2A331J
RN Resistor (CP)

RM73B2A332J
RN Resistor (CP)

RM73B2A431J
RN Resistor (CP)

323A5003J0241

323A5003J0242

323A5003J0244

323A5003J0272

323A5003J0272

323A5003J0331

323A5003J0332

323A5003J0431

3

2

1

1

5

1

19

3

25

R554

26

R72, R555

27

R618, R619

28

R49-R54, R58, R73,
R81, R621-R628,
R630-R640, R643­R647, R651, R652,
R654-R656, R659­R662, R675, R733­R736, R816, R818,
R820, R822-R824,
R826, R827, R832

29

R708

30

R32, R33, R68, R71,
R556-R558, R560­R595, R612-R616,
R710, R722, R744,

RM73B2A432J
RN Resistor (CP)

RM73B2A471J
RN Resistor (CP)

RM73B2A473J
RN Resistor (CP)

RM73B2A510J
RN Resistor (CP)

RM73B2A511J
RN Resistor (CP)

RM73B2A512J
RN Resistor (CP)

323A5003J0432

323A5003J0471

323A5003J0473

323A5003J0510

323A5003J0511

323A5003J0512

1

2

2

56

1

64

- 77 -

COM-Printed Circuit Board Rev. 4

(40030302 - 2/2 - 3/7)

REF.

NO.

31

32

33

34

35

36

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

R745, R768, R770­R772, R775-R779,
R817, R819, R821

R538, R711, R713­R720, R763, R780

R518-R521, R804

R825

R721

R57

R769

RM73B2A560J
RN Resistor (CP)

RM73B2A561J
RN Resistor (CP)

RM73B2A680J
RN Resistor (CP)

RM73B2A683J
RN Resistor (CP)

RM73B2A750J
RN Resistor (CP)

RM73B2A821J
RN Resistor (CP)

323A5003J0560

323A5003J0561

323A5003J0680

323A5003J0683

323A5003J0750

323A5003J0821

12

5

1

1

1

1

37

R66, R69, R77, R82,
R808, R813

38

R60

39

R34, R35

40

C14, C501-C504,
C581-C583

41

C599, C609, C611­C613

42

C596-C598, C610,
C614

43

C21, C505-C509

44

C12, C586-C589

45

C11

2125JPW
Tip Jumper (CP)

ERJ-12YJ750
RN Resistor (CP)

MSF1/2B0.51ΩJ
RS Resistor

CC2012CH1H101J 50V
CC Capacitor (CP)

CC2012CH1H330J 50V
CC Capacitor (CP)

CC2012CH1H680J 50V
CC Capacitor (CP)

CC2012SL1H102J 50V
CC Capacitor (CP)

CC2012SL1H561J 50V
CC Capacitor (CP)

CK92F1E155ZS 25V
CK Capacitor 1.5uF

323A5003P0001

323A5019J0750

324A1001J0518

303A3007C0101

303A3007C0330

303A3007C0680

303A3007K0102

303A3007K0561

303A4117Z2155

6

1

2

8

5

5

6

5

1

- 78 -

COM-Printed Circuit Board Rev. 4

(40030302 - 2/2 - 4/7)

REF.

NO.

46

47

48

49

50

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

C531, C534, C573,
C601

C511, C512, C571,
C602, C604, C605

C13, C15-C20, C514,
C517, C518, C526,
C527, C535-C539,
C541, C542, C545,
C547-C549, C558,
C559, C562-C563,
C567, C572, C575­C578, C595, C606­C608, C615, C619

C570

C2

CK2012B1H102K 50V
CK Capacitor (CP)

CK2012F1C105Z 16V
CK Capacitor (CP) 1uF

CK2012F1E104Z 25V
CK Capacitor (CP)

CK2012F1E224Z 25V
CK Capacitor (CP)

SXE10VB-1800-12.5D
CE Capacitor 1800uF

303A6008K3102

303A6008Z1105

303A6008Z2104

303A6008Z2224

304A1034A1182

4

6

39

1

1

C3

51

C4

52

C7

53

C6, C10

54

C5

55

C8

56

Q26

57

Q10, Q11, Q14, Q15,

58

Q20
Q6-Q9

59

SXE10VB-470 10V
CE Capacitor 470uF

SXE50VB-100 50V
CE Capacitor 100uF

10MS5-68M 10V
CE Capacitor 68uF

16MS5-10M 16V
CE Capacitor 10uF

SME10VB-100-0A 10V
CE Capacitor 100uF

KMG50VB-10M-FC 50V
CE Capacitor 10uF

7407FP
BIP Digital IC (SO)

74ALS244AFP
BIP Digital IC (SO)

74ALS245AFP
BIP Digital IC (SO)

304A1034A1471

304A1034H1101

304A1046A1680

304A1046C1100

304A1123A1101

304A1180H1100

700A0003N0007

700A2503N0244

700A2503N0245

1

1

1

2

1

1

1

5

4

- 79 -

COM-Printed Circuit Board Rev. 4

(40030302 - 2/2 - 5/7)

REF.

NO.

60

61

62

63

64

65

66

67

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

Q22

Q23

Q25

IC1

Q5

Q21

Q1-Q4

Q12

SN74AS08NS
BIP Digital IC (SO)

MBCE31701-040PF-BND
MOS Digital IC (FP)

UPC393G2
BIP Linear IC (SO)

TL431CLP/NJM431L
Analog IC-BIP Linear

M54646AP
BIP Linear IC

M62354FP
BIP Data IC (SO)

MSM514807A-80JS
MOS-D-RAM (SO)

93LC46A-NW
MOS-EEPROM

700A3050N0008

702A4720N0002

720A0523N0011

7200903M9001

720A1822M0002

722A0022N3001

802A0024N2625

816A0303M0000

1

1

1

1

1

1

4

1

68

Q13

69

EM1-EM5

70

EM8-EM12, EM33

71

TR502, TR503

72

TR4

73

TR1, TR2, TR501

74

TR3

75

CENT

76

APTK

MHM2029-004K-37
Micro Computer-MOS F

DST306-55B271M
EMI Filter

ZJSC-R47-181
EMI Filter

A1344/UN2111/DTA114K
PNP-HF-TR (CP)

2SB740
PNP-LF-TR

DTC114EKA
NPN-HF-TR (CP)

2SD1623S
NPN-LF-TR (CP)

57RE-40360-830B-D29
Rectangular Connector

TCS7187-01-201
Round Shaped Connector

851044N0002

342A1004P1271

342A1012P1181

600A1003N0003

601A1121M0004

602A1035N0005

603A1132N0001S

2201001P0360

221A1780P0080

1

5

6

2

1

3

1

1

1

- 80 -

COM-Printed Circuit Board Rev. 4

(40030302 - 2/2 - 6/7)

REF.

NO.

77

78

79

80

81

82

83

84

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

PS

POWER

STKFULL

HEAD2

HEAD1

PANEL

MUPIS

2NDTRAY, ENVE­LOPE

DHB-PB100-S131NA
PC Connector

00-9072-240-901-883
PC Connector

B5B-PH-K-S-GW
PC Connector

ZC-012
PC Connector

ZC-014
PC Connector

ZC-106
PC Connector

00-8345-396-949-014
PC Connector

175487-7
PC Connector

224A3219P1000

224A3377P0400

224A3538P0050

224A3590P0120

224A3590P0140

224A3591P0060

224A3618P0640

224A4322P0070

1

1

1

1

1

1

1

2

85

FRONT

86

OSC1

87

OSC2

88

BF2, BF6-BF8, BF10,
BF15, BF16

89

FU2, FU5

90

2

91

3

92

4

93

5

175487-9
PC Connector

EFO-EC8004A4
Ceramic Oscillator

SG-531PTJ-32MHz
Crystal Oscillator

ZBF253D-01
Beads Filter

251-001
Fuse

2-176438-7
IC Socket

DICF-8CS-E
IC Socket

DICF-42CS-E
IC Socket

Plate Panel

224A4322P0090

381A1033B0004

3842143C0001

377A1115P1309

540A2208S1102

245A1372P0720

245A1221P0080

245A1221P0420

40036401

1

1

1

7

2

2

1

2

1

- 81 -

COM-Printed Circuit Board Rev. 4

(40030302 - 2/2 - 7/7)

REF.

NO.

94

95

96

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

6

7

8

Earth Plate (A)

Screw

MPS-04-0
Card Spacer

PP4128-1131P001

P3-6G

143A1047P0001

1

2

2

- 82 -

CN9

1

21

S9

R12

C8

R21

R20

IC2

R15

R14

R18

R16

R17

R19

S10

C10 C11

C9

C7

IC1

R9
S4

R6

C5

R8

14

CN6

R7

C6

C4

R11

S5

5

1

CN7

S8

S6

S7

R13

S3

R3

R2

R1

C2

R5

R4

C1

S2
S1

C3

S13

S14

S11

S12

F1

C12

24
23

S15

S19

S20

S21

CN8

20
40

S16

S18

S22

S23

S17

S24

CN10

C13

2
1

AOLC-Printed Circuit Board Rev. 6

(4YA4046-1620G011 - 1/2)

- 83 -

AOLC-Printed Circuit Board Rev. 6

(4YA4046-1620G011 - 2/2 - 1/3)

REF.

NO.

1

2

3

4

5

6

7

8

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

R9, 12

R2, R8, R14, R20

R18, R19

R3

R5, R7, R15, R17

RD1/6-100ΩJ
RD Resistor

RD1/6-1KΩJ
RD Resistor

RD1/6-1.5KΩJ
RD Resistor

RD1/6-2.7KΩJ
RD Resistor

RD1/6-33KΩJ
RD Resistor

3213420J0101

3213420J0102

3213420J0152

3213420J0272

3213420J0333

2

4

2

1

4

R4

9

R6

10

11

R1, R11, R13, R21

12

13

R16

14

15

C4, C9, C13

16

C7

17

RD1/6-750ΩJ
RD Resistor

RD1/6-5.1KΩJ
RD Resistor

MSF1/2B0.51ΩJ
RS Resistor

RD1/4Y5.1KΩJ
RD Resistor

CK92F1H104ZY 50V
CK Capacitor 0.1UF

KMG50VB-47M 50V
CE Capacitor 47UF

3213420J0751

3213420J0512

324A1001J0518

321A1421J0512

303A0420Z3104

304A1164H1470

1

1

4

1

3

1

- 84 -

AOLC-Printed Circuit Board Rev. 6

(4YA4046-1620G011 - 2/2 - 2/3)

REF.

NO.

18

19

20

21

22

23

24

25

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

C1-C3, C5, C6, C8,
C10, C11

C12

IC1, IC2

CN8

TCK45B1H102KYA 50V
CK Capacitor 1000PF

SME50VB-220-CC 50V
CE Capacitor 220UF

A2918SWV
BIP Linear IC

00-8272-224-501-112
PC Connector

302A4027K3102

304A1165H1221

720A1826M0004

224A3368P0241

8

1

2

1

26

27

28

29

30

31

32

33

34

CN6

CN7

CN10

CN9

00-8263-0412-00-000
PC Connector

00-8263-0512-00-000
PC Connector

ZC-106
PC Connector

PR40BOMA
PC Connector

224A3357P0040

224A3357P0050

224A3591P0060

224A4360P0400

1

1

1

1

- 85 -

AOLC-Printed Circuit Board Rev. 6

(4YA4046-1620G011 - 2/2 - 3/3)

REF.

NO.

35

36

37

38

39

40

41

42

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

F1

S8, S11, S14, S24

S5, S6, S10, S13,
S19, S20, S21, S22,
S23

251-002
Fuse

JPW02
Jumper Wire

Short Wire (U-type) 0.65
P = 5.0

540A2208S1202

321A1520P0001

5KH-31036-50

1

4

9

43

S4, S15

44

S7, S12, S16, S17

45

S1, S2, S3, S9, S18

46

47

48

49

50

51

Short Wire (U-type) 0.65
P = 7.5

Short Wire (U-type) 0.65
P = 10

Short Wire (U-type) 0.65
P = 15

5KH-31036-75

5KH-31036-100

5KH-31036-150

2

4

5

- 86 -

IC3

R1

D1

R2

D2

R3

D3

R4

D4

IC2

SW1 SW2

R13
R14
R15
R16

C7

R17

R12

R18

SW5 SW6 SW7 SW8

R5
R6
R7
R8
R9
R10
R11

R20

R19

C4
C3

R21

SW3 SW4

C5

IC1

C2
C6

C8

1

2

CN1

5

6

C1

OLNC-Printed Circuit Board Rev. 3

(2YU5005-2235G001 - 1/2)

- 87 -

OLNC-Printed Circuit Board Rev. 3

(2YU5005-2235G001 - 2/2 - 1/2)

REF.

NO.

1

2

3

4

5

6

7

8

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

D1, D4

D2, D3

R1-R4, R19-R21

R5-R11

R12

SEL3910D-YZ
LED

SEL3210R-YZ
LED

RM73B2A201J
RN Resistor (CP)

RM73B2A103J
RN Resistor (CP)

RM73B2A913F
RN Resistor (CP)

650A0229M0018

650A0129M0016

323A5003J0201

323A5003J0103

323A5003F0913

2

2

7

7

1

9

10

11

12

13

14

15

16

17

R13-R17

R18

C1

C2, C7, C8

C3-C6

IC1

IC2

RM73B2A752J
RN Resistor (CP)

RM73B2A512J
RN Resistor (CP)

KME10VB-100 10V
CE Capacitor 100UF

CK2012F1E104Z 25V
CK Capacitor (CP)

CC2012CH1H101J 50V
CC Capacitor (CP)

BU6152S
MOS Digital IC

HD44780UB01FS
CPU-INF-IC (FP)

323A5003J0752

323A5003J0512

304A1115A1101

303A6008Z2104

303A3007C0101

702A4733M0002

855A0421N0002

5

1

1

3

4

1

1

- 88 -

OLNC-Printed Circuit Board Rev. 3

(2YU5005-2235G001 - 2/2 - 2/2)

REF.

NO.

18

19

20

21

22

23

24

25

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

IC3

SW1-SW8

CN1

MSM5259GS-VK
CPU-INF-IC (FP)

SOR-113HS
Push Button Switch

ZC-106
PC Connector

855A0024N0001

205A1165P1000

224A3591P0060

1

8

1

26

27

28

29

30

31

32

33

34

- 89 -

SW4

SW3

SW2

SW1

R22
R23
R24
R25

CN11

AOLS-Printed Circuit Board Rev. 6

(4YA4046-1621G011 - 1/2)

- 90 -

AOLS-Printed Circuit Board Rev. 6

(4YA4046-1621G011 - 2/2 - 1/1)

REF.

NO.

1

2

3

4

5

6

7

8

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

R22-R25

CN11

SW1-SW4

RD1/4Y10KΩJ
RD Resistor

00-5062-301-006-000
PC Connector

SOR-113HS
Push-button Switch

321A1421J0103

224A5114P0060

205A1165P1000

4

1

4

10

11

12

13

14

15

16

17

9

2

SUMI Card Assy.

4YX4046-1668G001

1

- 91 -

R49

SH7
R41
C18

C24

51

1

C19

01B 01D

C23

R42
R43

R44
R45

C22

C12

06F

C9 C11

04F

C29

R40
C30

R39

OSC1

02F

01F

C6

R37
C28
R51
R50
R36
C1
R34

C14

R38

05G

R48

R46

R35

R12R8R13R9R5
R10R6R11R7R20

R47

02G

R18
R16

C25

R14
R19

R17

R15

C7

01H

R21

R25R4R24
R23R2R22

06H

C8
C27

C17

05H

03H

C26

R3
R1

C20C21

C10

C2
C3

C13

C15

C16

PS

100

50

PSBA-Printed Circuit Board Rev. 3

(4YA4046-1632G011 - 1/2)

- 92 -

PSBA-Printed Circuit Board Rev. 3

(4YA4046-1632G011 - 2/2 - 1/3)

REF.

NO.

1

2

3

4

5

6

7

8

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

C1-C3

C6, C7

C8-C12, C18-C30

C13

C14

CC2012CH1H101J 50V
CC Capacitor (CP)

CK2012F1C105Z 16V
CK Capacitor (CP) 1UF

CK2012F1E104Z 25V
CK Capacitor (CP)

KME50VB-1R0-OA 50V
CE Capacitor 1.0UF

10MS5-68M 10V
CE Capacitor 68UF

303A3007C0101

303A6008Z1105

303A6008Z2104

304A1039H1109

304A1046A1680

3

2

18

1

1

9

10

11

12

13

14

15

16

17

C15

C16, C17

R1-R25

R34-R41

R42-R49

R50, R51

04F

SME10VB-100-OA 10V
CE Capacitor 100UF

SME16VB-47-OA 16V
CE Capacitor 47UF

RM73B2A101J
RN Resistor (CP)

RM73B2A472J
RN Resistor (CP)

RM73B2A512J
RN Resistor (CP)

RM73B2A680J
RN Resistor (CP)

SN74LS74ANS
BIP Digital IC (SO)

304A1123A1101

304A1123C1470

323A5003J0101

323A5003J0472

323A5003J0512

323A5003J0680

700A0550N0074A

1

2

25

8

8

2

1

- 93 -

PSBA-Printed Circuit Board Rev. 3

(4YA4046-1632G011 - 2/2 - 2/3)

REF.

NO.

18

19

20

21

22

23

24

25

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

06F

01F, 02F

03H

05G

02G

06H

SN74LS00NS
BIP Digital IC (SO)

SN74LS374NS
BIP Digital IC (SO)

74HC14FP
MOS Digital IC (SO)

Z8018110FEC
CPU-INF-IC (FP)

62256LFP-7LL
MOS-S-RAM (SO)

NM93C66N-NW
MOS-EEPROM

700A0550N0000

700A0550N0374

702A1703N0014

855A0462N0001

804A0003N8302

816A2323M0000

1

2

1

1

1

1

26

27

28

29

30

31

32

33

34

01D

01B

01H

05H

2

TIBPAL16L8-25CN-0242
PLA Memory IC

PALCE22V10H-15PC0003
PLA Memory IC

79L05P
BIP Linear IC

DS8925M
BIP-INF-IC (SO)

DICF-8CS-E
IC Socket

818A7091M0242

818A1239M0003

720A1000M5005

710A2053N0002

245A1221P0080

1

1

1

1

1

- 94 -

PSBA-Printed Circuit Board Rev. 3

(4YA4046-1632G011 - 2/2 - 3/3)

REF.

NO.

35

36

37

38

39

40

41

42

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

5

6

PS

OSC1

DICF-32CS-E
IC Socket

DICF-42CS-E
IC Socket

DHB-RD100-S131N-4.9
PC Connector

EXO-3-14.7456MHZ
Crystal Oscillator

245A1221P0320

245A1221P0420

224A3220P1000

384A2067B0012

1

2

1

1

43

44

45

46

47

48

49

50

51

SH7

7

02C

02D

02E

Short Wire (U-type) 0.65
P=2.5

MPS-16-0
Card Spacer

LH537U03

LH537U04

ROM IC
Writing Specification

5KH-31036-25

143A1047P0007

8174624M0003

8174624M0004

40203401

1

1

1

1

1

- 95 -

APPENDIX A HIGH CAPACITY SECOND PAPER FEEDER (OPTION)

1. CIRCUIT DESCRIPTION

1.1 Interface

IC2 (LC6543N) uses a single line for transferring data to and from the CPU on the main unit side
by performing the switchover between sending and receiving. To receive data from the CPU on
the main unit side, IC2 (LC6543N) causes the send/receive select signal at pin 7 of IC2 to be LOW
in order to drive the open collector output (pin 8 of IC1) to the high impedance state. As a result,
the line in the send direction is open and the receive data ready state is established. To send data
to the CPU on the main unit side, IC2 causes the send/receive select signal (pin 7 of IC2) to be
HIGH, so that the send data ready state can be established. Under this condition, IC2 can send
out data through pin 4. When finishing data transmission, IC2 causes the send/receive select
signal (pin 7 of IC2) to be LOW to open the send direction of the line.

AOLT- COM-

IC2

LC6543N

Send/receive
select signal

Receive data

Send data

4
7

3

5

IC2-7

IC2-3

IC2-4

Send data

12

IC1

OC

13

11

Receive data

5V

9

10

DATA

5V

CN22 2ND TRAY

IC1

OC

8

3

3

2

6

DATA

CPU

154

158

Clock

Clock

IC2-5

Ready for receiving Ready for sending Open

- A - 1 -

1.2 Motor Control

The hopping motor is driven by the driver IC according to the control signal from IC2 (LC6543N).
The hopping motor will drive either the hopping roller or the feed roller depending on the rotation
direction of the motor.

IC2-22

IC2-21

IC2

LC6543N TEA3717

20
21

22

8

7

TEA3717

8

7

15

15

1

CN24

1

OP-H1A

2

3

4

OP-H1B

OP-M2A

OP-M2B

1

Hopping

Motor

M

IC2-20

Rotation Stop Forward rotation Reverse rotation

T0 T1 T2 T3

- A - 2 -

2. TROUBLESHOOTING

2.1 Troubleshooting Table

(A) Interface/motor control board (AOLT)

Failure LCD Message

Paper input JAM occurs.

Paper size ERROR occurs.

The message "PAPER OUT"
remains displayed on the LCD.

• Option Tray I/F timeout error occurs.

(B) Cassette switch board (AOLD)

Failure LCD Message

Paper size ERROR occurs.

PAPER INPUT JAM
CHECK TRAY2

ERROR PAPER SIZE
CHECK TRAY2

PAPER OUT
********* TRAY2

ERROR CONTROLLER
81

ERROR PAPER SIZE

Flowchart

No.

A - 1

A - 2

A - 3

A - 4

Flowchart

No.

B - 1

CHECK TRAY2

- A - 3 -

2.2 Troubleshooting Flowchart

A-1 Paper input JAM occurs.

• Is the hopping motor rotating normally?

• No Are the normal waveforms as shown in section 1.2 output to pins 20,
21 and 22 of IC2 (LC6543N)?

• No Replace IC2 (LC6543N).

▼

• Yes Is +38V output to pin 3 of IC3 (TEA3717)?

• No Replace F1 (fuse).

▼

• Yes Replace IC3 (TEA3717).

▼

• OK?

▼

• No Replace IC4 (TEA3717).

▼

• Yes Failure of an element other than AOLT board

A-2 Paper size ERROR occurs.

• Do the output signals at pins 11, 12, 13 and 14 of IC2 (LC6543N) comply with the
following table?

Paper size Pin 11 Pin 12 Pin 13 Pin 14
Letter L H H H
Executive L H L H
A4 L L H H
Legal 14 H H H L
Legal 13 H L H H
B5 H H L H
A5 H H L L
A6 H L L H

• No Check to see if the SW1 to SW4 on AOLD board are set properly?

▼

• Yes Replace IC2 (LC6543N).

- A - 4 -

A-3 The message "PAPER OUT" remains displayed on the LCD.

• Is SEN1 (Paper END Sensor) operating normally?

• No Replace SEN1.

▼

• Yes Replace IC2 (LC6543N).

A-4 Option Tray I/F timeout error.

• Is the normal clock as shown in section 1.1 output to pin 5 of IC2 (LC6543N)?

• No Failure of COM board on the main unit side.

• Yes Is the normal receive data as shown in section 1.1 output to pin 3 of IC2

(LC6543N)?

• No Is the level on pin 9 or 10 of IC1 (LS38) HIGH at all time?

• No Replace IC1 (LS38).

▼

• OK?

▼

• No Failure of COM board on the main unit side or envelope
feeder AOLE board.

▼

• Yes Replace IC2 (LC6543N).

▼

• Yes Is the normal send data as shown in section 1.1 output to pin 3 of IC2
(LC6543N)?

• No Is the normal send data as shown in section 1.1 output to pin 4 of IC2

(LC6543N)?

• Yes Replace IC1 (LS38).

▼

• No Is an oscillation waveform output to pin 15 of IC2 (LC6543N)?

• No Replace OSC1 (oscillator).

▼

• OK?

▼

• No Replace IC2 (LC6543N).

▼▼

- A - 5 -

▼

• Yes Is the following reset waveform output to pin 18 of IC2 (LC6543N)?

+5V

IC2-pin 18

POW ON

• No Replace TR1 (DTA114S).

▼

• OK?

▼

• No Replace D2 (diode).

▼

• OK?

▼

• No Replace D3 (RD3.9E-B).

▼

• Yes Replace IC2 (LC6543N).

▼

• Yes Failure of COM board on the main unit side or envelope feeder AOLE board.

- A - 6 -

B-1 PAPER SIZE ERROR occurs.

• Does the PAPER SIZE 1 signal at pin 1 of CN25 go LOW when SW1 is depressed and

does the same signal go HIGH when SW1 is not depressed?

• No Replace SW1.

▼

• Yes Does the PAPER SIZE 2 signal at pin 2 of CN25 go LOW when SW2 is
depressed and does the same signal go HIGH when SW2 is not depressed?

• No Replace SW2.

▼

• Yes Does the PAPER SIZE 3 signal at pin 3 of CN25 go LOW when SW3 is
depressed and does the same signal go HIGH when SW3 is not depressed?

• No Replace SW3.

▼

• Yes Does not PAPER SIZE 4 signal at pin 4 of CN25 go LOW when SW4 is
depressed and does the same signal go HIGH when SW4 is not depressed?

• No Replace SW4.

▼

• Yes Failure of an element other than AOLD board

- A - 7 -

3. CIRCUIT DIAGRAM

Figure 3 - 1 AOLT-PCB (AOLT-1/1) (Rev. 4)
Figure 3 - 2 AOLD-PCB (AOLD-1/1) (Rev. 4)

- A - 8 -

APPENDIX B POWER ENVELOPE FEEDER (OPTION)

1. CIRCUIT DESCRIPTION

1.1 Interface

IC2 (LC6543N) uses a single line for transferring data to and from the CPU on the main unit side
by performing the switchover between sending and receiving. To receive data from the CPU on
the main unit side, IC2 (LC6543N) causes the send/receive select signal at pin 7 of IC2 to be LOW
in order to drive the open collector output (pin 8 of IC1) to the high impedance state. As a result,
the line in the send direction is open and the receive data ready state is established. To send data
to the CPU on the main unit side, IC2 causes the send/receive select signal (pin 7 of IC2) to be
HIGH, so that the send data ready state can be established. Under this condition, IC2 can send
out data through pin 4. When finishing data transmission, IC2 causes the send/receive select
signal (pin 7 of IC2) to be LOW to open the send direction of the line.

AOLE- COM-

IC2

LC6543N

Send/receive
select signal

Receive data

4
7

3

5

IC2-7

IC2-3

Send data

12

OC

13

Receive data

IC1
11

DATA

5V

9

10

5V

CN1 ENVELOPE

IC1

OC

8

5

3

8

6

CPU

154

158

Clock

Send data

Clock

IC2-4

IC2-5

DATA

Ready for receiving Ready for sending Open

- B - 1 -

1.2 Motor Control

The hopping motor is driven by the driver IC according to the control signal from IC2 (LC6543N).
The hopping motor will drive either the hopping roller or the feed roller depending on the rotation
direction of the motor.

IC2-22

IC2-21

IC2

LC6543N M54646

20
21
22

IC3

15
14

2

4

10

25

19

CN3

2

1

4

3

M-T3

M-T4

M-T1

M-T2

Hopping

Motor

M

IC2-20

Rotation stop Forward rotation Reverse rotation

T0 T1 T2 T3

- B - 2 -

2. TROUBLESHOOTING

2.1 Troubleshooting Table

(A) Interface/motor control board (AOLE)

Failure LCD Message

Paper input JAM occurs.

The message "PAPER OUT"
remains displayed on the LCD.

PAPER INPUT JAM
CHECK FEEDER

PAPER OUT
********* FEEDER

ERROR CONTROLLER
81

Flowchart

No.

A - 1

A - 2

A - 3• Option Tray I/F timeout error occurs.

- B - 3 -

2.2 Troubleshooting Flowchart

A-1 Paper input JAM occurs.

• Is the hopping motor rotating normally?

• No Are the normal waveforms as shown in section 1.2 output to pins 20

and 21 of IC2 (LC6543N)?

• No Replace IC2 (LC6543N).

▼

• Yes Does the output at pin 2 of IC3 (M54646) go HIGH when the motor is

rotating?

• No Is the normal waveform as shown in section 1.1 output to

▼

• Yes Replace TR1 (DTA114).

▼

• Yes Is +38V output to pin 3 of IC3 (M54646)?

• No Replace F1 (fuse).

pin 22 of IC2 (LC6543N)?

• No Replace IC2 (LC6543N).

▼

• OK?

▼

• No Replace D1 (diode).

▼

• OK?

▼

• No Replace D2 (diode).

▼

• Yes Replace IC3 (M54646).

A-2 The message "PAPER OUT" remains displayed on the LCD.

• Is SEN2 (Paper END Sensor) operating normally?

• No Replace SEN2.

▼

• Yes Replace IC2 (LC6543N).

- B - 4 -

A-3 Option Tray I/F timeout error.

• Is the normal clock as shown in section 1.1 output to pin 5 of IC2 (LC6543N)?

• No Failure of COM board on the main unit side

• Yes Is the normal receive data as shown in section 1.1 output to pin 3 of IC2
(LC6543N)?

• No Is the level on pin 9 or 10 of IC1 (LS38) HIGH at all time?

• No Replace IC1 (LS38).

▼

• OK?

▼

• No Failure of COM board on the main unit side or second TRAY

▼

• Yes Replace IC2 (LC6543N).

▼

• Yes Is the normal send data as shown in section 1.1 output to pin 3 of IC2
(LC6543N)?

• No Is the normal send data as shown in section 1.1 output to pin 4 of IC2

(LC6543N)?

AOLT board

• Yes Replace IC1 (LS38).

▼

• No Is an oscillation waveform output to pin 15 of IC2 (LC6543N)?

• No Replace OSC1 (oscillator).

▼

• OK?

▼

• No Replace IC2 (LC6543N).

▼▼

- B - 5 -

▼

• Yes Is the following reset waveform output at pin 18 of IC2 (LC6543N)?

+5V

IC2-pin 18

POW ON

• No Replace TR2 (DTA114K).

▼

• OK?

▼

• No Replace D3 (diode).

▼

• OK?

▼

• No Replace D4 (RD3.9E-B).

▼

• Yes Replace IC2 (LC6543N)

▼

• Yes Failure of COM board on the main unit side or second TRAY AOLT board.

- B - 6 -

3. CIRCUIT DIAGRAM

Figure 3 - 1 AOLE-PCB (AOLE-1/2) (Rev. 1)
Figure 3 - 2 AOLE-PCB (AOLE-2/2) (Rev. 1)

- B - 7 -

4. COMPONENT PARTS LIST

AOLE-PCB (Controller) Rev. 1 4YA4046-1647G1

- B - 10 -

CN1

C11

R2

IC1

L3

D5

TR2

L4

L2

RM1

CN3

C4

R16

14

C10

R18

C3

S4

R4

R17C8

F1

D1

D2

OSC1

R5

R6

R12

TR1

D3

D4

S1

IC2 IC3

R15 C6

R19

R3

C1 C5

C2

SEN2

R7 R8

R9

R13

C7

R10

C9

S3

R14

AOLE-Printed Circuit Board

(4YA4046-1647G001 - 1/2)

- B - 11 -

AOLE-Printed Circuit Board

(4YA4046-1647G001 - 2/2 - 1/3)

REF.

NO.

1

2

3

4

5

6

7

8

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

D1, D2, D5

D4

D3

R15, R16

R18, R19

EM01Z/SM1XN02/DSM1D2
Rectifier DI

RD3.9E-B
Zenor DI

1S953/1S2075K/1S2473
Signal DI

RM73B2A473J
RN Resistor (CP)

MSF1/2B0.51ΩJ
RS Resistor

610A0003M0001

613A1231L0082

611A0003L0001

323A5003J0473

324A1001J0518

3

1

1

2

2

9

10

11

12

13

14

15

16

17

R3-R6

R2

R7-R10, R14

R12

R17

R13

RM1

C10

RM73B2A102J
RN Resistor (CP)

RD1/4Y180ΩJ
RD Resistor

RM73B2A103J
RN Resistor (CP)

RM73B2A363J
RN Resistor (CP)

RM73B2A182J
RN Resistor (CP)

RM73B2A153J
RN Resistor (CP)

MRM-4-512JA
Block Resistor

KMG50VB-10M 50V
CE Capacitor 10UF

323A5003J0102

321A1421J0181

323A5003J0103

323A5003J0363

323A5003J0182

323A5003J0153

334A3266J0512

304A1164H1100

4

1

5

1

1

1

1

1

- B - 12 -

AOLE-Printed Circuit Board

(4YA4046-1647G001 - 2/2 - 2/3)

REF.

NO.

18

19

20

21

22

23

24

25

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

C11

C2

C1

C3-C6

C7-C9

IC3

IC1

10MS5-33M 10V
CE Capacitor 33UF

RPE122-127E334M50
CK Capacitor 0.33UF

CC2012SL1H471J 50V
CC Capacitor (CP)

CK2012B1H102K 50V
CK Capacitor (CP)

CK2012F1E104Z 25V
CK Capacitor (CP)

M54646AP
BIP Linear IC

74LS38P
BIP Digital IC

304A1046A1330

303A4116M3334

303A3007K0471

303A6008K3102

303A6008Z2104

720A1822M0002

700A0503M0038

1

1

1

4

3

1

1

26

IC2

27

28

SEN2

29

TR1, TR2

30

OSC1

31

32

S1, S3, S4, L2-L4

33

F1

34

LC6543N-4B52
MOS-CPU (ROM)

SG-205-B
Photocoupler

A1344/UN2111/DTA114K
PNP-HF-TR (CP)

CST4.000MGW
Ceramic Oscillator

Short Wire (U-type) 0.65
P = 2.5

251-001
Fuse

853A0036M0002

652A0114M0001

600A1003N0003

381A1025B0002

5KH-31036-26

540A2208S1102

1

1

2

1

6

1

- B - 13 -

AOLE-Printed Circuit Board

(4YA4046-1647G001 - 2/2 - 3/3)

REF.

NO.

35

36

37

38

39

40

41

42

SYMBOL TYPE/NAME PART NO. Q'TY REMARKS

CN3

CN1

00-8263-0412-00-000
PC Connector

175487-7
PC Connector

224A3357P0040

224A4322P0070

1

1

43

44

45

46

47

48

49

50

51

- B - 14 -

Oki Systems (Danmark) a.s.

Park Alle 382
DK-2625 Vallensbaek
Denmark
Tel : [phone]
Fax : [phone]

Oki Systems (Deutschland) GmbH

Hansaallee 187
40549 Dusseldorf
Germany
Tel : [phone]
Fax : [phone]

Oki Systems (España) S.A.

C/Goya 9
28001 Madrid
Spain
Tel : [phone]
Fax : [phone]

Oki Systems (France) S.A.

44-50 Avenue du General de Gaulle
94240 L'Hay les Roses
France
Tel : [phone]
Fax : [phone]

Oki Systems (Italia) S.p.A.

Centro Commerciale "II Girasole"
PAT. Cellini-Lotto 3. 05/B
20084 Lacchiarella (Milano)
Italy
Tel : [phone]
Fax : [phone]

Oki Systems (UK) Ltd

550 Dundee Road
Slough
Berkshire SL1 4JY
United Kingdom
Tel : [phone]
Fax : [phone]

Oki Europe Ltd

Branch Office
ul Grzybowska 80-82
PL-00840 Warsaw
Poland
Tel : [phone]
Fax : [phone]

Oki Systems (Holland) b.v.

Kruisweg 765
Postbus 690
NL-2132 NG (2130AR)
Hoofddorp
The Netherlands
Tel : [phone]
Fax : [phone]

Oki Systems (Norway) A/S

Hvamsvingen 9
P O Box 174
N-2013 Skjetten
Norway
Tel : [phone]
Fax : [phone]

Oki Europe Ltd

Branch Office
International Bussiness Centre
Pobrezni 3
186 00 Praha 8
The Czech Republic
Tel : [phone]
Fax : [phone]

Oki (Europe) Ltd

Central House
Balfour Road
Hounslow
Middlesex TW3 1HY
United Kingdom
Tel : [phone]
Fax : [phone]

Oki Systems (Ireland) Ltd

The Square Industrial Complex
Tallaght
Dublin 24
Ireland
Tel : [phone]
Fax : [phone]

Oki Systems (Sweden) AB

Box 131
S-163 55 Spanga
Stormbyväegen 2-4
Sweden
Tel : [phone]
Fax : [phone]

Oki Europe Képviselet

International Trade Center
H-1075 Budapest
Bajcsy-Zsilinsszky út 12. 11. em. 204
Hungary
Tel : [phone]
Fax : [phone]

Oki (UK) Ltd

3 Castkecary Road
Wardpark North
Cumbemauld G68 0DA
Scotland
Tel : [phone]
Fax : [phone]

¡

People to People Technology

Oki Data Corporation

4-11-22, Shibaura, Minato-ku,
Tokyo 108, Japan
Tel: [phone] Fax: [phone]

1-97 Printed in Japan