AR-M316 (serv.man10). ARM256 316 Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 105

AR-M256/M257/M258/M316/M317/M318/5625/5631  TROUBLE CODE LIST 9 - 6

F1

81

Content

Transport motor trouble (AR-F14N)

Details

Transport motor trouble

Cause

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

Check 
and 
remedy

Use SIM3-3-11 to check the front transport 
motor operation

F2

02

Content

Toner supply failure

Details

The value judged from the actual toner 
supply hysteresis differs greatly from the 
toner sensor value

Cause

Developing unit trouble.

Toner supply abnormality caused by 
installation of unpacked toner cartridge.

Check 
and 
remedy

Replace the developing unit.

Use SIM 25-1 to perform DV stirring.

04

Content

Identification error

Model error
Type error

Destination error

Data abnormality
Misc error

Details

(Identification error)

When the CRUM trademark differs.
When the CRUM company code differs.

(Model error)

When the boot program model code does 
not match with the CRUM model 
information
(Type error)

When the CRUM type is other than 
[Genuine/Conversion/Production rotation]

(Destination error)
The destination of the body differs from 
that of the CRUM

(Data abnormality)

The initial check information includes an 
erroneous value.
When the max. toner supply time is 00.

When the print hard stop is 00.

Cause

CRUM chip failure.
Erroneous developing unit.

Check 
and 
remedy

Replace the CRUM chip.

Replace the developing unit.

58

Content

Temperature humidity sensor abnormality

Details

Temperature humidity sensor abnormality

Cause

Temperature humidity sensor connector 
disconnection.

Short-circuit of the temperature humidity 
sensor was detected.

Check 
and 
remedy

Check the connection of temperature 
humidity sensor.

Replace the temperature humidity sensor.

Trouble 

code

Details of trouble

Main 
code

Sub 

code

F5

02

Content

Copy lamp (xenon lamp) error

Details

The copy lamp does not light up

Cause

Copy lamp abnormality.

Copy lamp harness abnormality.
CCD PWB harness abnormality.

Check 
and 
remedy

Check the copy lamp. (SIM 5-3)

When the lamp lights:
Check the harnesses and connectors 
between the CCD unit and the MCU PWB.
When the lamp does not light:
Check the harness and connector between 
the copy lamp and the MCU PWB.
Replace the copy lamp unit.

Replace the MCU PWB.

F6

00

Content

FAX control PWB communication trouble

Details

Communication trouble between MCU and 
FAX control  PWB

Cause

FAX control PWB connector 
disconnection.

Harness trouble between FAX control 
PWB and MCU PWB.
Motherboard connector pin breakage.

FAX control PWB ROM defect/Data failure.

Check 
and 
remedy

Check the connectors and the harness of 
FAX control PWB and MCU PWB.
Check the grounding of the copier.

Check FAX control PWB ROM.

10

Content

FAX control PWB trouble

Details

FAX control PWB abnormality

Cause

FAX control PWB defect

Check 
and 
remedy

Replate the FAX control PWB

80

Content

FAX control PWB communication trouble 
(Protocol)

Details

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

Cause

FAX control PWB connector disconnection
Harness trouble between FAX control 
PWB and MCU PWB.

Motherboard connector pin breakage.

FAX control PWB ROM defect/Data failure.

Check 
and 
remedy

Check the connectors and the harness of 
FAX control PWB and MCU PWB.

Check the grounding of the copier.

Check FAX control PWB ROM.

81

Content

FAX control PWB communication trouble 
(Parity)

Details

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

Cause

FAX control PWB connector disconnection
Harness trouble between FAX control 
PWB and MCU PWB.

Motherboard connector pin breakage.

FAX control PWB ROM defect/Data failure.

Check 
and 
remedy

Check the connectors and the harness of 
FAX control PWB and MCU PWB.

Check the grounding of the copier.

Check FAX control PWB ROM.

Trouble 

code

Details of trouble

Main 
code

Sub 

code