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AR-M350 TROUBLE CODES 11-5

F1

02

Content

Mail-bin stacker (AR-MS1) 
transport motor abnormality

Detail

Transport motor trouble

Cause

Motor lock
Motor rpm abnormality
Overcurrent to the motor
Mail-bin stacker control PWB trouble

Check and 
remedy

Use DIAG (SIM3-21) to check the transport 
motor operation.

12

Content

Mail-bin stacker (AR-MS1) gate trouble

Detail

Gate operation abnormality

Cause

Gate lock
Mail-bin stacker control PWB trouble

Check and 
remedy

Use DIAG (SIM3-21) to check the transport 
gate operation. 

80

Content

Mail-bin stacker (AR-MS1) 
power abnormality

Detail

The 24V power is not supplied to the Mail-bin 
stacker PWB.

Cause

Improper connection or disconnection of 
connector and harness
Mail-bin stacker control PWB trouble
Power unit (AR-DC1) trouble

Check and 
remedy

Use DIAG (SIM3-20) to check the sensor 
operation.

F1

03

Content

Console finisher (AR-FN7) 
paddle motor trouble

Detail

Paddle motor operation abnormality

Cause

Motor lock
Motor rpm abnormality
Overcurrent to the motor
Console finisher control PWB trouble

Check and 
remedy

Use DIAG (SIM3-3) to check the motor 
operation. 

06

Content

Console finisher (AR-FN7) 
slide motor trouble

Detail

Slide motor operation abnormality

Cause

Motor lock
Motor rpm abnormality
Overcurrent to the motor
Console finisher control PWB trouble

Check and 
remedy

Use DIAG (SIM3-3) to check the motor 
operation. 

10

Content

Console finisher (AR-FN7) 
stapler motor trouble

Detail

Stapler motor operation abnormality

Cause

Motor lock
Motor rpm abnormality
Overcurrent to the motor
Console finisher control PWB trouble

Check and 
remedy

Use DIAG (SIM3-3) to check the motor 
operation. 

11

Content

Console finisher (AR-FN7) 
bundle exit motor trouble

Detail

Bundle exit motor operation abnormality

Cause

Motor lock
Motor rpm abnormality
Overcurrent to the motor
Console finisher control PWB trouble

Check and 
remedy

Use DIAG (SIM3-3) to check the motor 
operation. 

MAIN

SUB

F1

15

Content

Console finisher (AR-FN7) lift motor trouble

Detail

Lift motor operation abnormality

Cause

Motor lock
Motor rpm abnormality
Overcurrent to the motor
Console finisher control PWB trouble

Check and 
remedy

Use DIAG (SIM3-3) to check the motor 
operation. 

19

Content

Console finisher (AR-FN7) 
front alignment motor trouble

Detail

Front alignment motor operation abnormality

Cause

Motor lock
Motor rpm abnormality
Overcurrent to the motor
Console finisher control PWB trouble

Check and 
remedy

Use DIAG (SIM3-3) to check the motor 
operation. 

20

Content

Console finisher (AR-FN7) 
rear alignment motor trouble

Detail

Rear alignment motor operation abnormality

Cause

Motor lock
Motor rpm abnormality
Overcurrent to the motor
Console finisher control PWB trouble

Check and 
remedy

Use DIAG (SIM3-3) to check the motor 
operation. 

30

Content

Console finisher (AR-FN7) 
communication trouble

Detail

Communication cable test error after turning 
on the power or exiting from DIAG.
Communication error with the console 
finisher

Cause

Improper connection or disconnection of 
connector and harness between the machine 
and the console finisher.
Console finisher control PWB trouble
Control PWB (PCU) trouble
Malfunction by noises

Check and 
remedy

Canceled by turning OFF/ON the power.
Check connectors and harness in the 
communication line. 
Replace the console finisher control PWB or 
PCU PWB. 

31

Content

Console finisher (AR-FN7) 
fold sensor trouble

Detail

Sensor input value abnormality

Cause

Sensor breakage
harness breakage
Console finisher control PWB trouble

Check and 
remedy

Use DIAG (SIM3-2) to check the sensor 
operation.

32

Content

Communication trouble between the console 
finisher (AR-FN7) 
and the punch unit (AR-PN1). 

Detail

Communication err between the console 
finisher and the punch unit. 

Cause

Improper connection or disconnection of 
connector and harness between the console 
finisher and the punch unit. 
Console finisher control PWB trouble
Control PWB (PCU) trouble
Malfunction by noise

Check and 
remedy

Canceled by turning OFF/ON the power.
Check connectors and harness in the 
communication line. 
Replace the console finisher control PWB. 

MAIN

SUB

 &     !"#$%

AR-M350 TROUBLE CODES 11-6

F1

33

Content

Console finisher (AR-FN7) 
punch (AR-PN1) side registration motor 
trouble

Detail

Punch side registration motor operation 
abnormality

Cause

Motor lock
Motor rpm abnormality
Overcurrent to the motor
Console finisher control PWB trouble

Check and 
remedy

Use DIAG (SIM3-3) to check the motor 
operation. 

34

Content

Console finisher (AR-FN7) 
punch (AR-PN1) motor trouble

Detail

Punch motor operation abnormality

Cause

Motor lock
Motor rpm abnormality
Overcurrent to the motor
Console finisher control PWB trouble

Check and 
remedy

Use DIAG (SIM3-3) to check the motor 
operation. 

35

Content

Console finisher (AR-FN7) 
punch (AR-PN1) side registration sensor 
trouble

Detail

Sensor input value abnormality

Cause

Sensor breakage
Harness disconnection
Console finisher control PWB trouble

Check and 
remedy

Use DIAG (SIM3-2) to check the sensor 
operation.

36

Content

Console finisher (AR-FN7) 
punch (AR-PN1) timing sensor trouble

Detail

Sensor input value abnormality

Cause

Sensor breakage
Harness disconnection
Console finisher control PWB trouble

Check and 
remedy

Use DIAG (SIM3-2) to check the sensor 
operation.

37

Content

Console finisher (AR-FN7) 
backup RAM trouble

Detail

Backup RAM contents are disturbed.

Cause

Console finisher control PWB trouble
Malfunction by noise

Check and 
remedy

Replace the console finisher control PWB.

38

Content

Console finisher (AR-FN7) 
punch (AR-PN1) backup RAM trouble

Detail

Punch unit backup RAM contents are 
disturbed.

Cause

Punch control PWB trouble
Malfunction by noise

Check and 
remedy

Replace the punch control PWB.

81

Content

Console finisher transport motor abnormality

Detail

Transport motor trouble

Cause

Motor lock
Motor rpm abnormality
Overcurrent to the motor
Console finisher control PWB trouble

Check and 
remedy

Use DIAG (SIM3-3) to check the motor 
operation. 

MAIN

SUB

F2

00

Content

Toner control sensor abnormality

Detail

Toner control sensor output open

Cause

Connector harness trouble
Connector disconnection

Check and 
remedy

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

02

Content

Toner supply abnormality

Detail

Toner control sensor output value becomes 
under-toner too earlier.

Cause

Connector harness trouble
Toner control sensor trouble
The toner cartridge seal is not removed

Check and 
remedy

Check connection of the connector in the 
toner motor section.
Check connection of connector and harness 
to the main PWB. 
Check for disconnection of harness.
Toner control sensor output check DIAG 
(SIM25-1)
Remove the toner cartridge seal.

04

Content

Improper cartridge (life cycle error, etc.)

Detail

An improper process cartridge is inserted.

Cause

IC chip trouble
Improper cartridge

Check and 
remedy

Insert a proper cartridge.

05

Content

CRUM error

Detail

Communication with IC chip cannot be 
made.

Cause

IC chip trouble
Improper cartridge

Check and 
remedy

Insert a proper cartridge.

39

Content

Process thermistor trouble

Detail

Process thermistor open

Cause

Process thermistor trouble
Process thermistor harness disconnection
PCU PWB trouble

Check and 
remedy

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

F3

12

Content

Machine no. 1 tray lift-up trouble

Detail

PED does not turn ON in the specified time.
LUD does not turn ON in the specified time.

Cause

PED/LUD trouble
No. 1 tray lift-up trouble
Check connection of harness between the 
PCVU PWB, lift-up unit, and paper feed unit.

Check and 
remedy

Check PED, LUD, and their harness and 
connectors.
Check the lift-up unit. 

22

Content

Multi purpose tray lift-up trouble

Detail

MCPED does not turn ON in the specified 
time.
MCLUD does not turn ON in the specified 
time.

Cause

MCPED/MCLUD trouble
Multi purpose tray lift-up motor trouble
Harness disconnection f the PCU PWB, the 
lift-up unit, and the paper feed unit.

Check and 
remedy

Check MCPED, PCLUD, and their harness 
and connectors. 
Check the lift-up unit. 

MAIN

SUB

 (     !"#

AR-M350 TROUBLE CODES 11-7

F6

00

Content

Communication trouble (ICU detection) 
between ICU and FAX

Details

Communication establishment error/Fleming/
Parity/Protocol error

Cause

Slave unit PWB connector disconnection
Harness abnormality between slave unit 
PWB and ICU PWB.
Slave unit PWB mother board connector pin 
breakage
Slave unit ROM abnormality/No ROM/
Reverse insertion of ROM/ROM pin 
breakable

Check & 
Remedy

Check connector harness between slave unit 
PWB and ICU PWB.
Check grounding of machine.
Check slave unit PWB ROM.

01

Content

FAX expansion flash memory abnormality 
(ICU detection)

Details

Expansion flash memory with SRAM backup 
data is installed. 

Cause

SRAM backup data is detected in expansion 
flash memory.
Expansion flash memory in which SRAM 
data are backed up with SIM 66-19 is 
installed.

Check & 
Remedy

Restore backup data to SRAM with SIM 66-
20, and clear expansion flash memory with 
SIM 66-10. If data are unnecessary, 
clear expansion flash memory with SIM 66-
10.

04

Content

FAX modem operation abnormality

Details

FAX PWB modem chip operation 
abnormality

Cause

The boot test pin in the FAX PWB is shorted 
and normal operation is tried.
Modem chip operation abnormality in FAX 
PWB

Check & 
Remedy

Turn on the power again without shorting the 
boot test pin in the FAX PWB.
Replace FAX PWB.

F7

01

Content

FAX board EEPROM read/write error

Details

EEPROM access error (read/write)

Cause

EEPROM trouble
FAX PWB EEPROM access circuit trouble

Check & 
Remedy

Replace FAX PWB.

H2

00···

HL1

(RT
H1)

01···

HL2

(RT
H2)

Content

thermistor open
Fusing unit not installed

Detail

Thermistor is open. 
(An input voltage of 2.92V or above is 
detected.)
Fusing unit not installed

Cause

Thermistor trouble
Control PWB trouble
Fusing section connector disconnection
AC power trouble
Fusing unit not installed

Check and 
remedy

Check harnesses and connectors from the 
thermistor to the control PWB.
Use DIAG (SIM14) to clear the self diag 
display.

MAIN

SUB

H3

00···

HL1

(RT
H1)

01···

HL2

(RT
H2)

Content

Fusing section high temperature trouble

Detail

The fusing temperature exceeds 242°C. 
(An input voltage of 0.27V or above is 
detected.)

Cause

thermistor trouble
Control PWB trouble
Fusing section connector disconnection
AC power trouble

Check and 
remedy

Use DIAG (SIM5-2) to check the heater lamp
Blinking operation.

If the heater lamp blinks normally:
Check the thermistor and its harness.
Check the thermistor input circuit in the 
control PWB.

Check the AC PWB and the lamp control 
circuit in the control PWB.
Use DIAG (SIM14) to cancel the trouble

H4

00···

HL1

(RT
H1)

01···

HL2

(RT
H2)

Content

Fusing section low temperature trouble

Detail

•The set temperature is not reached within

the specified time (normally 3 min) when
warming up or resetting from pre-heating.

•Under the ready state. 

(An input voltage of 1.21V or below is
detected 5 times continuously.)

Cause

thermistor trouble
Heater lamp trouble
Control PWB trouble
Thermostat trouble
AC power trouble
Interlock switch trouble

Check and 
remedy

Use DIAG (SIM5-2) to check the heater lamp
Blinking operation.

If the heater lamp blinks normally:
Check the thermistor and its harness.
Check the thermistor input circuit in the 
control PWB.

Check for heater lamp disconnection and 
thermostat disconnection.
Check the interlock switch.
Check the AC PWB and the lamp control 
circuit in the control PWB.  
Use DIAG (SIM14) to cancel the trouble.

H5

01

Content

5-time continuous POD1 not-reaching jam 
detection

Detail

5-time continuous POD1 not-reaching jam 
detection

Cause

A fusing section jam is not properly removed. 
(Jam paper remains.)
POD1 sensor trouble, or harness 
disconnection
Improper installation of fusing unit

Check and 
remedy

Check jam paper in the fusing section. 
(winding, etc.)
Check POD1 sensor harness, and check  the 
fusing unit installation.
Use DIAG (SIM14) to cancel the trouble.

L1

00

Content

Scanner feed trouble

Details

Scanner feed is not completed within the 
specified time. 

Cause

Scanner unit abnormality
Scanner wire disconnection

Check & 
Remedy

Check scanning with SIM 1-1.

MAIN

SUB

 )     !"#

AR-M350 TROUBLE CODES 11-8

L3

00

Content

Scanner return trouble

Details

Scanner return is not completed within the 
specified time.

Cause

Scanner unit abnormality
Scanner wire disconnection

Check & 
Remedy

Check scanning with SIM 1-1.

L4

01

Content

Main motor lock detection

Detail

The motor lock signal is detected for 1.5sec 
during rotation of the main motor.

Cause

main motor trouble
Check connection of harness between the 
PCU PWB and the main motor. 
Control circuit trouble

Check and 
remedy

Use DIAG (SIM25-1) to check the main 
motor operation.
Check harness and connector between the 
PCU PWB and the main motor.

02

Content

Drum motor lock detection

Detail

The motor lock signal is detected for 1.5sec 
during rotation of the drum motor.

Cause

Drum motor trouble
Improper connection of harness between the 
PCU PWB and the drum motor.
Control circuit trouble

Check and 
remedy

Use DIAG (SIM25-1) to check the drum 
motor operation.
Check harness and connector between the 
PCU PWB and the drum motor.

L6

10

Content

Polygon motor lock detection

Detail

It is judged that the polygon motor lock signal 
is not outputted.
Lock signal is checked in the interval of 
10sec after starting the polygon motor, and it 
is judged that the polygon motor does not 
rotate normally.

Cause

The LSU connector or harness in the LSU is 
disconnected or broken.
Polygon motor trouble

Check and 
remedy

Use DIAG (SIM61-1) to check the polygon 
motor operation.
Check connector and harness connection.
Replace LSU.

L8

01

Content

No fullwave signal

Detail

Full wave signal is not detected.

Cause

The PCU PWB connector or the power unit 
harness is disconnected or broken.
PCU PWB trouble
Power unit trouble

Check and 
remedy

Check connection of the harness and 
connector.
Replace PCU PWB.
Replace the power unit. 

02

Content

Full wave signal width abnormality

Detail

It is judged as full wave signal frequency 
abnormality. 
(When the detection cycle is judged as 69Hz 
or above or 42.5Hz or below)

Cause

The connector or harness of the PCU PWB 
and the power PWB is disconnected.
PCU PWB trouble
Power unit trouble

Check and 
remedy

Check connection of the harness and 
connector.
Replace the PCU PWB.
Replace the power unit. 

MAIN

SUB

U6

00

Content

Desk/LCC communication trouble

Detail

Desk/LCC communication error
Communication cable test error after turning 
on the power or exiting DIAG.

Cause

Improper connection or disconnection of 
connector and harness
Desk control PWB trouble
Control PWB (PCU) trouble
Noise or interference

Check and 
remedy

Canceled by turning OFF/ON the power. 
Check connection of the harness and 
connector in the communication line.

01

Content

Desk/LCC No. 1 tray lift-up trouble

Detail

Desk/LCC No. 1 tray lift-up trouble

Cause

Sensor trouble
Desk control PWB trouble
Gear breakage
Lift-up motor trouble

Check and 
remedy

Use DIAG (SIM4-2) to check the lift-up 
sensor detection.
Use DIAG (SIM4-3) to check the lift-up motor 
operation.

02

Content

Desk No. 2 tray/LCC1 lift-up trouble

Detail

Desk No. 2 tray/LCC lift-up trouble

Cause

Sensor trouble
Desk control PWB trouble
Gear breakage
Lift-up motor trouble

Check and 
remedy

Use DIAG (SIM4-2) to check the lift-up 
sensor detection.
Use DIAG (SIM4-3) to check the lift-up motor 
operation.

03

Content

Desk No. 3 tray/LCC2 lift-up trouble

Detail

Desk no. 3 tray lift-up trouble

Cause

Sensor trouble
Desk control PWB trouble
Gear breakage
Lift-up motor trouble

Check and 
remedy

Use DIAG (SIM4-2) to check the lift-up 
sensor detection.
Use DIAG (SIM4-3) to check the lift-up motor 
operation.

10

Content

Desk/LCC transport motor trouble

Detail

Desk/LCC transport motor operation trouble

Cause

Motor lock
Motor rpm abnormality
Overcurrent to the motor
Desk control PWB trouble

Check and 
remedy

Use DIAG (SIM4-3) to check the transport 
motor operation.

MAIN

SUB

 *     !"#