AR-203 (serv.man5). AR203 Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 114

AR-203E/5420/M200/M201  SIMULATION, TROUBLE CODES  10 - 41

L3

00

Scanner return trouble

L4

01

Main motor lock detection

32

Exhaust fan motor lock detection trouble

L6

10

Polygon motor lock detection

U1

03

FAX board battery error

U2

04

EEPROM read/write error (Serial communication 
error)

11

Counter check sum error (EEPROM)

40

CRUM chip communication error

Main 
code

Sub 

code

Details of trouble

E1

00

Content IMC communication trouble

Detail

An abnormality occurs in communication 
between the CPU and the IMC.

Cause

IMC abnormality
IMC memory defect/data abnormality

Check 
and 
remedy

Replace the MCU PWB with new one.

10

Content IMC trouble

Detail

An abnormality occurs in the IMC.

Cause

USB chip error/CODEC error on the IMC.

Check 
and 
remedy

Replace the MCU PWB with a new one.

13

Content IMC flash ROM error

Detail

An abnormality occurs in the IMC flash 
ROM.

Cause

IMC abnormality

Check 
and 
remedy

Replace the MCU PWB with a new one.
If downloading of the program is abnormally 
terminated, it may cause an error. Download 
the program again to avoid this.

81

Content IMC communication interface error (Parity)

Detail

A parity error occurs in communication 
between the CPU and the IMC.

Cause

IMC abnormality
IMC memory defect/data abnormality

Check 
and 
remedy

Replace the MCU PWB with new one.

E1

82

Content IMC communication interface error 

(Overrun)

Detail

An overrun error occurs in communication 
between the CPU and the IMC.

Cause

IMC abnormality
IMC memory defect/data abnormality.

Check 
and 
remedy

Replace the MCU PWB with new one.

84

Content IMC communication interface error 

(Framing)

Detail

A framing error occurs in communication 
between the CPU and the IMC.

Cause

IMC abnormality
IMC memory defect/data abnormality.

Check 
and 
remedy

Replace the MCU PWB with new one.

Main 
code

Sub 

code

Details of trouble

E7

01

Content Duplex model memory setup error, memory 

not-detected error

Detail

The memory is not set properly or the 
memory capacity is not set to the duplex 
setup (6M).

Check 
and 
remedy

Set SIM 26-39 code number to 2.

02

Content LSU trouble

Detail

The BD signal from the LSU cannot be 
detected in a certain cycle. (Always OFF or 
always ON)

Cause

LSU connector or LSU harness defect or 
disconnection
Polygon motor rotation abnormality
Laser beams are not generated.
MCU PWB abnormality.

Check 
and 
remedy

Check connection of the LSU connector.
Execute SIM 61-03 to check the LSU 
operations.
Check that the polygon motor rotates 
normally.
Check that the laser emitting diode 
generates laser beams.
Replace the LSU unit.
Replace the MCU PWB.

10

Content Shading trouble (Black correction)

Detail

The CCD black scan level is abnormal when 
the shading.

Cause

Improper connection of the CCD unit flat 
cable
CCD unit abnormality
MCU PWB abnormality

Check 
and 
remedy

Check connection of the CCD unit flat cable.
Check the CCD unit.

11

Content Shading trouble (White correction)

Detail

The CCD white scan level is abnormal when 
the shading.

Cause

Improper connection of the CCD unit flat 
cable
Dirt on the mirror, the lens, and the reference 
white plate
Copy lamp lighting abnormality
CCD unit abnormality
MCU PWB abnormality
(When occurred in the SPF/RSPF scan 
position.)
Improper installation of the mirror unit

Check 
and 
remedy

Clean the mirror, lens, and the reference 
white plate.
Check the light quantity and lighting status of 
the copy lamp (SIM 05-03).
Check the MCU PWB.

16

Content Abnormal laser output

Detail

When the laser output is stopped, HSYNC is 
detected.

Cause

Laser abnormality
MCU PWB abnormality.

Check 
and 
remedy

Check the laser emitting diode operation.
Replace the MCU PWB.

Main 
code

Sub 

code

Details of trouble