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Main 
code

Sub

code

Detail of trouble

F2

04

Content

CRUM data read trouble

Detail

Communication error between
CRUM PWB and MCU PWB

Cause

CRUM PWB data error
MCU PWB error
MCU PWB EEPROM error
Disconnection between CRUM
(toner cartridge) and MCU PWB

Check and
remedy

Replace the toner cartridge.
Replace MCU PWB.
Replace MCU PWB EEPROM
Check and fix connection between
CRUM (toner cartridge) and MCU
PWB.

F5

02

Content

Copy lamp error

Detail

Copy lamp voltage detection error

Cause

Power unit trouble
Copy lamp trouble
Inverter trouble
MCU PWB trouble

Check and
remedy

Replace the power unit.
Check the copy lamp ON with SIM
5-3.
Replace the copy lamp.
Replace the inverter.
Replace the MCU PWB.

F6

00

Content

Communication trouble between
MCU and FAX (MCU detection)

Detail

Communication establishment
error, framing error, parity error,
protocol error

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB.
Motherboard connector pin
breakage
FAX control PWB ROM error, data
error

Check and
remedy

Check connector/harness of FAX
control PWB and MCU PWB.
Check grounding of the machine.
Check FAX control PWB ROM.

10

Content

FAX control PWB trouble

Detail

Communication trouble between
MCU and FAX control WPB

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB
Motherboard connector pin
breakage
FAX control PWB ROM error/Data
error

Check and
remedy

Check connector/harness between
FAX control PWB and MCU PWB.
Check grounding of the machine.
Check FAX control PWB ROM.

80

Content

FAX control PWB communication
trouble (Protocol)

Detail

Communication trouble between
MCU and FAX control PWB
(Protocol error)

Main 
code

Sub

code

Detail of trouble

F6

80

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB
Motherboard connector pin
breakage
FAX control PWB ROM error/Data
error

Check and
remedy

Check connector/harness between
FAX control PWB and MCU PWB.
Check grounding of the machine.
Check FAX control PWB ROM.

81

Content

FAX control PWB communication
trouble (Parity)

Detail

Communication trouble between
MCU and FAX control PWB
(Parity error)

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB
Motherboard connector pin
breakage
FAX control PWB ROM error/Data
error

Check and
remedy

Check connector/harness between
FAX control PWB and MCU PWB.
Check grounding of the machine.
Check FAX control PWB ROM.

82

Content

FAX control PWB communication
trouble (Overrun)

Detail

Communication trouble between
MCU and FAX control PWB
(Overrun error)

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB
Motherboard connector pin
breakage
FAX control PWB ROM error/Data
error

Check and
remedy

Check connector/harness between
FAX control PWB and MCU PWB.
Check grounding of the machine.
Check FAX control PWB ROM.

84

Content

FAX control PWB communication
trouble (Framing)

Detail

Communication trouble between
MCU and FAX control PWB
(Framing error)

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB
Motherboard connector pin
breakage
FAX control PWB ROM error/Data
error

Check and
remedy

Check connector/harness between
FAX control PWB and MCU PWB.
Check grounding of the machine.
Check FAX control PWB ROM.

AR-162 TROUBLE CODE LIST – 4

Main 
code

Sub

code

Detail of trouble

F6

88

Content

FAX control PWB communication
trouble (Timeout)

Detail

Communication trouble between
MCU and FAX control PWB
(Timeout error)

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB
Motherboard connector pin
breakage
FAX control PWB ROM error/Data
error

Check and
remedy

Check connector/harness between
FAX control PWB and MCU PWB.
Check grounding of the machine.
Check FAX control PWB ROM.

F9

00

Content

Communication trouble between
MCU and printer PWB (MCU
detection)

Detail

Communication establishment
error, framing error, parity error,
protocol error

Cause

Bad connection of printer PWB
connector
Defective harness between printer
PWB and MCU PWB.
Motherboard connector pin
breakage
Printer PWB ROM error, data error

Check and
remedy

Check connector/harness of printer
PWB and MCU PWB.
Check grounding of the machine.
Check printer PWB ROM.

10

Content

Printer PWB trouble

Detail

Communication trouble between
MCU and printer PWB

Cause

Bad connection of printer PWB
connector
Defective harness between printer
PWB and MCU PWB.
Motherboard connector pin
breakage
Printer PWB ROM error, data error

Check and
remedy

Check connector/harness of printer
PWB and MCU PWB.
Check grounding of the machine.
Check printer PWB ROM.

80

Content

Printer PWB communication
trouble (Protocol)

Detail

Communication trouble between
MCU and printer PWB (Protocol
error)

Cause

Bad connection of printer PWB
connector
Defective harness between printer
PWB and MCU PWB.
Motherboard connector pin
breakage
Printer PWB ROM error, data error

Check and
remedy

Check connector/harness of printer
PWB and MCU PWB.
Check grounding of the machine.
Check printer PWB ROM.

Main 
code

Sub

code

Detail of trouble

F9

81

Content

Printer PWB communication
trouble (Parity)

Details

Communication trouble between
MCU and printer PWB(Parity error)

Cause

Printer PWB connector
disconnection
Printer PWB MCU PWB harness
failure
Printer PWB mother board
connector pin breakage.
Printer PWB ROM defect,data
failure

Check and
remedy

Check the connectors and harness
of the printer PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the printer
PWB.

82

Content

Printer PWB communication
trouble (Overrun)

Details

Communication trouble between
MCU and printeu PWB(Overrun
error)

Cause

Printer PWB connector
disconnection
Printer PWB MCU PWB harness
failure
Printer PWB mother board
connector pin breakage.
Printer PWB ROM defect,data
failure

Check and
remedy

Check the connectors and harness
of the printer PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the printer
PWB.

84

Content

Printer PWB communication
trouble (Framing)

Details

Communication trouble between
MCU and printer PWB(Framing
error)

Cause

Printer PWB connector
disconnection
Printer PWB MCU PWB harness
failure
Printer PWB mother board
connector pin breakage.
Printer PWB ROM defect,data
failure

Check and
remedy

Check the connectors and harness
of the printer PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the printer
PWB.

88

Content

Printer PWB communication
trouble (Time-out)

Details

Communication trouble between
MCU and printeu PWB(Time-out
error)

AR-162 TROUBLE CODE LIST – 5

Main 
code

Sub

code

Detail of trouble

F9

88

Cause

Printer PWB connector
disconnection
Printer PWB MCU PWB harness
failure
Printer PWB mother board
connector pin breakage.
Printer PWB ROM defect,data
failure

Check and
remedy

Check the connectors and harness
of the printer PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the printer
PWB.

H2

00

Content

Thermistor open detection

Detail

Fusing thermistor open

Cause

Thermistor defect
MCU PWB defect
Fusing section connector contact
failure
Power supply failure
Fusing unit not installed

Check and
remedy

Check the harness and the
connector of the thermistor and
the MCU.
Clear the self diag display with
SIM 14.

H3

00

Content

Heat roller abnormally high
temperature

Detail

Fusing temperature of 220 

∼

240˚C.

Cause

Thermistor defect
MCU PWB defect
Fusing connector connection failure
Power supply failure

Check and
remedy

Check the heater lamp blinking
with SIM 5-2.
When the lamp blinks normally:
  Check the thermistor and the
  harness. Check the MCU PWB
  thermistor input circuit.
When the lamp lights up instead
 of blinking:
  Check the lamp control circuit of
  the power supply PWB and the
 MCU PWB.
Clear the trouble with SIM 14.

H4

00

Content

Heat roller abnormally low
temperature

Detail

When the temperature does not
reach 155˚C within 55 sec after
turning on the power, or when it
falls under 145˚C during printing,
or when it falls under 100˚C
during pre-heating.

Cause

Thermistor failure
Heater lamp failure
MCU PWB failure
Thermostat failure
Power supply failure
Interlock switch failure

Main 
code

Sub

code

Detail of trouble

H4

00

Check and
remedy

Check blinking of the heater lamp
with SIM 5-2.
When the lamp blinks normally:
  Check the thermistor and the
 harness.
  Check the MCU PWB thermistor
 input circuit.
When the lamp does not light:
  Check for heater lamp
  disconnection or thermostat
 disconnection.
  Check the interlock switch.
  Check the power supply PWB
  and MCU PWB lamp control
 circuit.
Clear the trouble with SIM 14.

L1

00

Content

Mirror base feed trouble

Detail

The mirror home position (MHPS)
does not turn off though the feed
operation is completed during
mirror initial operation after turning
on the power.
The mirror home position (MHPS)
does not turn off during shading
operation.
The mirror home position (MHPS)
does not turn on when the mirror
base is returned for the specified
time after copy feed is started and
SPF scanning position shift is
performed.

Cause

Mirror unit defect
Mirror home position sensor defect
MCU PWB defect
Scanner wire disconnection

Check and
remedy

Check the scanning operation with
SIM 1-1.

L3

00

Content

Mirror base return trouble

Detail

The mirror home position (MHPS)
does not turn on though the mirror
base returning is completed during
mirror initial operation after turning
on the power.
The mirror home position does not
turn on when the mirror is
returned to the home position
during shading.
The mirror home position (MHPS)
does not turn on when the mirror
base returning is completed for
the specified time (about 6 sec)
after copy return start.

Cause

Mirror unit
Mirror home position sensor defect
MCU PWB defect
Scanner wire disconnection

Check and
remedy

Check the scanning operation with
SIM 1-1.

L4

01

Content

Main motor lock

Detail

The main motor encoder pulse is
not detected for 400msec.

Cause

Main motor defect
Harness disconnection between
the MCU PWB and the main
motor.
Control circuit failure

AR-162 TROUBLE CODE LIST – 6

Main 
code

Sub

code

Detail of trouble

L4

01

Check and
remedy

Check the main motor operation
with SIM 25-1.
Check the harness and the
connector between the MCU PWB
and the main motor.

10

Content

Job separator motor trouble

Details

When the home is not detected
within 2.5 sec after the job
separator tray starts to move
upwards.

Cause

The job separator upper limit
detection sensor is defective.
The job separator motor is
defective.
The job separator motor periphery
circuit is defective.
The condition of the MCU PWB
JP5 is wrong.

Check and
countermeas
ure

Check the job separator operation
by means of SIM3-2 and 4.
Check the harnesses and
connectors.
Check whether the condition of
the MCU PWB JP5 is correct.

L6

10

Content

Polygon motor lock

Detail

The lock signal (the specified
rotation speed signal) is not
supplied within the specified time
(about 6 sec)after starting the
polygon motor rotation.

Cause

LSU connector disconnection or
harness disconnection in the LSU.

Check and
remedy

Check the operation of the
polygon motor with SIM 25-10.
Check the harness and the
connector connection.
LSU replacement

L8

01

Content

Zero cross pulse (FW) trouble

Detail

Zero cross pulse width is shifted
by 55Hz 

±

 10% or more.

Cause

MCU PWB defect
Power supply unit breakdown

Check and
remedy

Check the harness and the
connector.
MCU PWB replacement
Power supply unit replacement

U2

04

Content

EEPROM serial communication
error

Detail

Error in communication with
EEPROM

Cause

EEPROM failure
Installation of uninitialized EEPROM
MCU PWB EERPOM access
circuit failure

Check and
remedy

Check that the EEPROM is
properly set.
To prevent against loss of
counter/adjustment values, record
the values with simulation.
U2 trouble cancel with SIM 16
MCU PWB replacement

Main 
code

Sub

code

Detail of trouble

U2

11

Content

Counter check sum error

Detail

Counter check sum value stored
in the EEPROM is abnormal.

Cause

EEPROM failure
Control circuit hung up by noises
MCU PWB EEPROM access
circuit defect

Check and
remedy

Check that the EEPROM is
properly set. 
To prevent against loss of
counter/adjustment values, record
the values with simulation.
U2 trouble cancel with SIM 16
MCU PWB replacement

12

Content

Adjustment value check sum error
(EEPROM)

Detail

Adjustment value data area check
sum error

Cause

EEPROM failure
Control circuit hung up by noises
MCU PWB EEPROM access
circuit failure

Check and
remedy

Check that the EEPROM is
properly set.
To prevent against loss of
counter/adjustment values, record
the values with simulation.
U2 trouble cancel with SIM 16
MCU PWB replacement

40

Content

CRUM communication error

Detail

Toner cartridge CRUM data read
error

Cause

A toner cartridge of a different
destination is installed.
EEPROM trouble
Check the destination setup.
Toner cartridge CRUM PWB trouble
MCU PWB trouble
CRUM connector disconnection

Check and
remedy

Install a specified toner cartridge.
Check the SIM 26-6 setup.
Replace the EEPROM.
Replace the toner cartridge.
Replace the MCU PWB.
Check connection of the CRUM
connector.
Execute SIM 16.

U3

29

Content

Mirror base home position error

Detail

Home position is not detected
when starting mirror base shift.

Cause

Mirror unit defect
Mirror home position sensor defect
MCU PWB decfect
Scanner wire disconnection

Check and
remedy

Check the scanning operation with
SIM 1-1.

U9

00

Content

Communication trouble between
MCU and OPE (OPE detection)

Detail

Communication setup error,
framing, parity, protocol error

AR-162 TROUBLE CODE LIST – 7