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Trouble code

Description

Main 
code

Sub

code

C1

00

Content MC trouble
Detail

Main charger output error (output
released)
Trouble signal from high-voltage
transformer

Cause

Main charger improperly installed
Main charger improperly assembled
High-voltage transformer connector
removed
High-voltage harness removed or wire
broken

Check
and
remedy

Check main charger output with SIM8-2.
Check main charger connector for
disconnection.
Replace high-voltage unit.

C2

00

Content TC trouble
Detail

Transfer charger output error (output
short-circuiting)
Trouble signal from high-voltage
transformer

Cause

Transfer charger contaminated with
foreign matter
Transfer charger wire broken
High-voltage transformer connector
disconnected

Check
and
remedy

Check transfer charger output with
SIM8-6.
Replace high-voltage unit.

E7

00

Content E7–

**

: ICU-PCU communication

trouble (ICU detection)

Detail

Communication setup error,
framing/parity/protocol error

Cause

Slave unit PWB connector improper
connection
Slave unit PWB – ICU PWB harness
trouble
Connector pin breakage of the motor
PWB of the slave unit PWB
Slave unit ROM trouble. no ROM, ROM
reverse insertion, ROM pin breakage

Check
and
remedy

Connect the connector of the slave unit
PWB and the ICU PWB.
Check the connection and the harness.
Check the grounding of the copier.
Check the ROM of the slave unit PWB.

01

Content Image data memory trouble
Detail

The ICU image data memory (SIMM) is
detected only as 8MB or less.
The SIMM capacity is insufficient for the
model.

Cause

The ICU PWB SIMM is not installed.
The ICU PWB SIMM does not work
properly.
The ICU PWB SIMM is not installed
properly.
ICU PWB abnormality

Check
and
remedy

Check installation of the ICU PWB SIMM.
Check the SIMM capacity with SIM
22-10.
Replace the ICU PWB SIMM.

Trouble code

Description

Main 
code

Sub

code

E7

02

Content Laser trouble
Detail

BD signal from LSU kept at OFF or ON

Cause

Connector to LSU or harness inside LSU
disconnected or wire broken
Polygon motor improperly rotating
Laser home position sensor improperly
positioned inside LSU
Laser power supply line does not have
proper voltage
Laser LED improperly lighting
ICU PWB error

Check
and
remedy

Check LSU connector for disconnection.
Check LSU operation with SIM61-1.
Check polygon motor for rotation.
Check laser LED for lighting.
Replace LSU unit.
Replace ICU PWB.

03

Content HDD trouble
Detail

HDD is not recognized in the model with
HDD installed.

Cause

The HDD is not installed to the ICU
PWB.
The HDD does not work properly in the
ICU PWB.
The HDD is not installed to the ICU
PWB properly.
ICU PWB abnormality

Check
and
remedy

Check installation of the HDD to the ICU
PWB.
Check connection of the HDD harness
to the ICU.
Replace the HDD.
Replace the ICU PWB.

10

Content Shading trouble (black correction)
Detail

Improper CCD black reading level for
copy lamp going out

Cause

Improper installation of flat cable to CCD
unit
CCD unit error
ICU PWB error

Check
and
remedy

Check flat cable to CCD unit for
installation.
Check CCD unit.
Check ICU PWB.

11

Content Shading trouble (white correction)
Detail

Improper CCD white reference plate
reading level for copy lamp lighting

Cause

Improper installation of flat cable to CCD
unit
Mirror, lens or reference white plate
contaminated
Copy lamp operation error
Improperly installed CCD unit
CCD unit error
ICD PWB error

Check
and
remedy

Clean mirror, lens, or reference white
plate.
Check copy lamp for light amount
(SIM5-3) and lighting.
Check CCD unit.
Check ICU PWB.

AR-405

1/21/1999

11 – 2

Trouble code

Description

Main 
code

Sub

code

E7

13

Content CCD light amount check error
Detail

Copy lamp light amount adjustment in
shading cannot be made

Cause

Copy lamp does not light (broken wire,
improper installation)
Improper installation of flat cable to CCD
unit
Improper connection of copy lamp CL
lead wire
Mirror, lens, or reference white plate
Dirt or dew
Improper output of copy lamp power
supply
Improper installation of CCD unit
CCD unit error
ICU PWB error

Check
and
remedy

Clean mirror, lens, reference white plate.
Check copy lamp for light amount
(SIM5-3) and lighting.
Check CCD unit.
Check ICU PWB.

90

Content E7–

**

: ICU-PCU communication

trouble (PCU detection)

Detail

Communication setup
error/framing/parity/protocol error

Cause

Slave unit PWB connector improper
connection
Slave unit PWB – ICU PWB harness
trouble
Slave unit PWB mother board connector
pin breakage

Check
and
remedy

Check the slave unit PWB and the ICU
PWB connector connection.
Check the copier earth.

F1

00

Content Finisher communication trouble
Detail

Communication line test error occurs
when power is turned on or after the exit
of a simulation mode.
Improper communication with sorter

Cause

Improper connection or broken wire of
connector or harness between copier
and sorter
Finisher control PWB defective
Control PWB (PCU) defective
Malfunction due to noise

Check
and
remedy

Clear by turning the power supply
OFF/ON.
Check communication line connector
and harness.
Replace Finisher control PWB or PCU
PWB.

01

Content Finisher1 jogger shift trouble / Finisher 2

alignment section abnormality

Detail

Jogger shift trouble / Alignment plate
shift trouble

Cause

Motor lock
Motor rpm abnormality
Motor overcurrent
Finisher control PWB trouble

Check
and
remedy

Check the jogger motor operation with
SIM 3-3.

Trouble code

Description

Main 
code

Sub

code

F1

02

Content Finisher transport motor error
Detail

Transport motor drive trouble

Cause

Motor lock

Check
and
remedy

Check transport motor operation with
SIM3-3.

04

Content Finisher elevator lower limit detection
Detail

When the bin is shifted, the upper limit
or the lower limit sensor is detected. /
The elevator exceeds the lower limit. 

Cause

Sensor defective
Sorter/finisher control PWB abnormality

Check
and
remedy

Check sensor with SIM3-2.

05

Content Finisher 1 elevator motor trouble /

Finisher 2 stack tray sensor abnormality

Detail

The elevator does not detect the home
position. / Stack tray sensors are turned
on in the abnormal combination. 

Cause

Sensor defective
Sorter/finisher control PWB abnormality

Check
and
remedy

Check sensor with SIM3-2.

06

Content Finisher bin shift motor error
Detail

1) Bin shift is not completed within 2.5
seconds after bin shift request

Cause

Motor lock
Improper motor speed
Overcurrent to motor
Finisher control PWB defective

Check
and
remedy

Check bin shift motor operation with
SIM3-4.

08

Content Finisher staple shift motor trouble
Detail

Staple motor drive trouble

Cause

Motor lock
Motor rpm abnormality
Overcurrent to motor
Finisher control PWB trouble

Check
and
remedy

Check the operation of the staple motor
with SIM 3-3.

10

Content Staple unit operation trouble
Detail

Staple operation trouble

Cause

Motor lock
Motor rpm abnormality
Motor overcurrent
Finisher control PWB trouble

Check
and
remedy

Check the staple motor operation with
SIM 3-3.

11

Content Pusher motor trouble / Boomerang

rotation abnormality

Detail

Pusher motor trouble / Paddle solenoid
abnormality

Cause

Motor lock / paddle solenoid operation
abnormality / boomerang rotation sensor
abnormality
Motor rpm abnormality
Motor overcurrent
Finisher control PWB abnormality

Check
and
remedy

Check the finisher motor operation, the
paddle solenoid operation with SIM 3-3
or check the boomerang rotation sensor
with SIM 3-2.

AR-405

11 – 3

1/21/1999

Trouble code

Description

Main 
code

Sub

code

F1

14

Content Stack tray abnormality
Detail

Stack tray control sensor abnormality

Cause

The paper surface sensor and the full
stack sensor do not turn on even when a
certain time is passed after starting the
tray.

Check
and
remedy

Check the sensor operation with SIM 3-2.

15

Content Finisher elevator motor trouble / Stack

tray motor lock

Detail

Elevator motor trouble

Cause

Motor lock
Motor rpm abnormality
Motor overcurrent
Finisher control PWB trouble

Check
and
remedy

Check the elevator motor operation with
SIM 3-3.

50

Content Non-support trouble in automatic

detection of option connection (Finisher /
sorter)

Detail

In automatic detection of option
connection, a non-support finisher or a
sorter is detected. 

Cause

A non-support finisher or a sorter is
connected to the copier. 

Check
and
remedy

Check the finisher or the sorter. 

80

Content Finisher power trouble
Detail

24V power is not supplied to the finisher
PWB.

Cause

Connector harness improper connection
or disconnection
Finisher control PWB trouble
Power unit trouble

Check
and
remedy

Check the sensor operation with SIM 3-2.

F2

00

Content Toner control sensor open
Detail

Toner control sensor output open

Cause

Connector harness trouble
Connector unconnected.

Check
and
remedy

Check connection of the toner control
sensor.
Check connection of the connector
harness with the main PWB.
Check for disconnection of the harness.

02

Content Toner motor connector disconnected
Detail

Connection detection signal with toner
motor is OFF

Cause

Connector harness defective
Connector disconnected

Check
and
remedy

Check toner motor connector for
connection.
Check connector harness to main PWB
for connection.
Check harness for broken wire.

Trouble code

Description

Main 
code

Sub

code

F2

31

Content Process control trouble (OPC base

surface reflection factor is improper)

Detail

Usually the sensor gain is adjusted so
that the output is a certain value, by
reading the drum base surface with the
image density sensor before starting
process control.
However, a certain output is not
obtained by adjusting the sensor gain.

Cause

Image density sensor defective

Check
and
remedy

Check process control sensor output
with SIM44-2. (Do not adjust)
If the result is far different from the
specified value, it suggests the sensor is
defective. Check the sensor and
harness.
If the deviation is relatively small, check
the sensor and drum surface for
contamination.

32

Content Process control trouble (drum marking

sensor defective)

Detail

Usually the sensor gain is adjusted so
that the output is a certain value, by
reading the drum base surface with the
drum marking sensor before starting
process control.
However, a certain output is not
obtained by adjusting the sensor gain.

Cause

Drum marking sensor defective
Improper connection of harness
between PCU PWB and drum marking
sensor
Drum marking sensor contaminated
OPC drum cleaning improper
Charging voltage improper

Check
and
remedy

Check process control output with
SIM44-02. (Do not adjust.)
If the result is far different from the
specified value, it suggests the sensor is
defective. Check the sensor and
harness.
If the deviation is relatively small, check
the sensor and drum surface for
contamination.

37

Content Drum marking sensor gain adjustment

error

Detail

When the drum marking area surface is
scanned with the drum marking sensor
before starting process control and the
sensor gain is adjusted until a constant
output is provided, the output is not
constant though the sensor gain is
changed.

Cause

Drum marking sensor trouble
Improper connection between PCU
PWB and drum marking sensor
Drum marking sensor is dirty
OPC drum cleaning trouble

Check
and
remedy

Perform the gain adjustment of process
control sensor with SIM 44-2.
If ERROR is displayed, it may be a
breakdown. Check the sensor and the
harness.
When the adjustment is completed,
check the drum surface conditions.

AR-405

1/21/1999

11 – 4

Trouble code

Description

Main 
code

Sub

code

F2

39

Content Process thermistor breakdown
Detail

The process thermistor is open.

Cause

Process thermistor abnormality
Improper connection of the process
thermistor bar
PCU PWB abnormality

Check
and
remedy

Check connection of the process
thermistor harness and connector.
Check the PCU PWB.

F3

12

Content Upper cassette lift-up trouble
Detail

UPED does not turn on within the
specified time.
ULUD does not turn on within the
specified time.

Cause

UPED or ULUD defective
Upper cassette lift-up motor defective
Improper connection of harness
between PCU PWB, lift-up unit, and
paper feed unit.

Check
and
remedy

Check UPED, ULUD and their harness
and connector.
Check lift-up unit.

22

Content Lower cassette lift-up trouble
Detail

LPED does not turn on within the
specified time.
LLUD does not turn on within the
specified time.

Cause

LPED or LLUD defective
Lower cassette lift-up motor defective
Improper connection of harness
between PCU PWB, lift-up unit, and
paper feed unit.

Check
and
remedy

Check LPED, LLUD, their harnesses
and connectors.
Check lift-up unit.

F9

00

Content F9–

**

: ICU-PRT communication

trouble (ICU detection)

Detail

Communication setup error,
framing/parity/protocol error

Cause

Slave unit PWB connector improper
connection
Slave unit PWB – ICU PWB harness
trouble
Connector pin breakage of the motor
PWB of the slave unit PWB
Slave unit ROM trouble. no ROM, ROM
reverse insertion, ROM pin breakage

Check
and
remedy

Connect the connector of the slave unit
PWB and the ICU PWB.
Check the connection and the harness.
Check the grounding of the copier.
Check the ROM of the slave unit PWB.

01

Content PRT DRAM trouble
Detail

Option printer PWB DRAM trouble
(Check when turning on the power.)

Cause

DRAM module is broken and access
cannot be made.
DRAM module improper installation

Check
and
remedy

Check with SIM 67-1.

Trouble code

Description

Main 
code

Sub

code

F9

03

Content Network card trouble.
Detail

Network card self test trouble.

Cause

Network card defecft.
Printer PWB defect.
Network card connector connection
defect.

Check
and
remedy

Check the Network card connector.
Replace the printer PWB.
Replace the Network card.

04

Content Printer program error.
Detail

Program data trouble in the option
printer board.

Cause

Flash memory data is destroied.

Check
and
remedy

Replace or rewrite the Flash memory.
Replace the printer PWB.

05

Content Short of memory capacity on the ICU

PWB

Detail

Total memory is less than 16MB on the
ICU PWB.

Cause

Memory defect
SIMM memory connector connection
defect
ICU PWB defect
Wrong type SIMM memory is installed

Check
and
remedy

Replace the ICU PWB
Replace the memory
Check the memory connector

10

Content PRT SCSI LSI abnormality
Detail

An error occurred in SCSI
communication with the option printer
board.

Cause

SCSI LSI abnormality
ISU PWB abnormality
SCSI connector improper connection

Check
and
remedy

Replace the printer PWB.
Check the SCSI connector. 
Replace the ISU PWB.

90

Content F9–

**

: ICU-PRT communication

trouble (PRT detection)

Detail

Communication setup
error/framing/parity/protocol error

Cause

Slave unit PWB connector improper
connection
Slave unit PWB – ICU PWB harness
trouble
Slave unit PWB mother board connector
pin breakage

Check
and
remedy

Check the slave unit PWB and the ICU
PWB connector connection.
Check the copier earth.

H2

00…HL1
01…HL2

Content Thermister open

Fusing unit not installed

Detail

Thermister is open (more than 4.6-V
input voltage is detected).
Fusing unit not installed

Cause

Thermister defective
Control PWB defective
Improper connection of fusing connector
AC power supply defective
Fusing unit not installed

Check
and
remedy

Check harness and connector between
thermister and control PWB.
Clear the display of self-diagnostics with
SIM14.

AR-405

11 – 5

1/21/1999