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AR-203E/5420/M200/M201  SIMULATION, TROUBLE CODES  10 - 40

66

38

Time setting/check 
(Executable only when the 
FAX is installed.)

[Function]
Use to check the time setting.

67

50

USB receive speed 
adjustment (USB1.1) 
(AR-203E only)

Used to set the limitation on the print data receive speed of USB2.0 (Full speed) port (USB port
on the machine).
→ When print images from USB2.0 (Full speed) port are disturbed, change the setting and try
again.

When this simulation is executed, the currently set code number is displayed.

Enter the code number corresponding to the adjustment value, and press [START] key to
change the setting.

Main 
code

Sub 

code

Contents

Details of function/operation

1) Initial display

∗ [Clear] key: FAX control is terminated.

2) Select 1

"xxxx.xx.xx(xxx)" is the current value. (No
revision of display)

3)

Select 1

∗ Select 2: Returns to "1) Initial display".
4) Enter the year in 4 digits.

5) Enter the month in 2 digits.

6) Enter the day in 2 digits.

"xxxx.xx.xx(xxx) is the entered value.
∗ Select 2: Returns to "1) Initial display".
7) Select 1

After 2sec, returns to "1) Initial display".

2) Select 2

"xx:xx" is the current value.

3) Select 1

∗ Select 2: Returns to "1) Initial display".
4) Enter o'clock in 2 digits.

5) Enter minute in 2 digits.

"xx:xx" is the current value.
∗ Select 2: Returns to "1) Initial display".
6) Select 1

After 2sec, returns to "1) Initial display".

SELECT TO SET

1:DATE     2:TIME

xxxx.xx.xx(xxx)

CHANGE?   1:YES 2:NO

INPUT YEAR

(4 DIGITS)____.__.__

INPUT MONTH

(1-12)    1998.__.__

INPUT DAY

(1-31)    1998.01.__

xxxx.xx.xx(xxx)

STORED?   1:YES 2:NO

STORED

xx:xx

CHANGE?   1:YES 2:NO

INPUT HOUR

(0-24)         __:__

INPUT MINUTE

(00-59)        01:__

xx:xx

STORED?   1:YES 2:NO

STORED

Code number

Setting

Speed

1

FAST

↑ Fast

2

NORMAL1

3

NORMAL2

4

SLOW

↓ Slow

Main 
code

Sub 

code

Details of trouble

E1

00

IMC communication trouble

10

IMC trouble

13

IMC flash ROM error

81

IMC communication interface error (Parity)

82

IMC communication interface error (Overrun)

84

IMC communication interface error (Framing)

E7

01

Duplex model memory setup error, memory not-
detected error

02

LSU trouble

10

Shading trouble (Black correction)

11

Shading trouble (White correction)

Main 
code

Sub 

code

Details of trouble

E7

16

Abnormal laser output

F2

02

Toner supply abnormality

04

Improper cartridge (Destination error, life cycle error)

F5

02

Copy lamp lighting abnormality

F6

10

FAX board trouble

H2

00

Thermistor open

H3

00

Heat roller high temperature detection

H4

00

Heat roller low temperature detection

L1

00

Feeding is not completed within the specified time 
after starting feeding. (The scan head locking switch 
is locked)

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

AR-203E/5420/M200/M201  SIMULATION, TROUBLE CODES  10 - 42

F2

02

Content Toner supply abnormality

Detail

The maximum toner supply time is greatly 
exceeded.

Cause

CRUM chip trouble

Improper developing unit

Check 
and 
remedy

Replace the CRUM chip.

Replace the developing unit.

04

Content Improper cartridge (Destination error, life 

cycle error)

Detail

The destination of the main unit differs from 
that of the CRUM.

When the life cycle information is other than 
Not Used (FFh).

Cause

CRUM chip trouble
Improper developing unit

Check 
and 
remedy

Replace the CRUM chip.

Replace the developing unit.

F5

02

Content Copy lamp lighting abnormality

Detail

The copy lamp does not turn on.

Cause

Copy lamp abnormality
Copy lamp harness abnormality
CCD PWB harness abnormality.

Check 
and 
remedy

Use SIM 5-3 to check the copy lamp 
operations.
When the copy lamp lights up.
Check the harness and the connector 
between the CCD unit and the MCU PWB.
When the copy lamp does not light up.
Check the harness and the connector 
between the copy lamp unit and the MCU 
PWB.
Replace the copy lamp unit.
Replace the MCU PWB.

F6

10

Content FAX board trouble

Detail

Communication trouble between MCU and 
FAX control PWB

Cause

FAX control PWB connector disconnection
Defective harness between FAX control 
PWB and MCU PWB
Motherboard connector pin breakage
FAX control PWB ROM error/Data error
IC on FAX PWB causes abnormality

Check 
and 
remedy

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

H2

00

Content Thermistor open

Detail

The thermistor is open.
The fusing unit is not installed.

Cause

Thermistor abnormality
Control PWB abnormality
Fusing section connector disconnection
The fusing unit is not installed.

Check 
and 
remedy

Check the harness and the connector 
between the thermistor and the PWB.
Use SIM 14 to clear the self diagnostic 
display.

Main 
code

Sub 

code

Details of trouble

H3

00

Content Heat roller high temperature detection

Detail

The fusing temperature exceeds 240°C.

Cause

Thermistor abnormality
Control PWB abnormality
Fusing section connector disconnection.

Check 
and 
remedy

Use SIM 5-02 to check the heater lamp 
blinking operation.
When the lamp blinks normally.
Check the thermistor and its harness.
Check the thermistor input circuit on the 
control PWB.
When the lamp keeps ON.
Check the power PWB and the lamp control 
circuit on the MCU PWB.
Use SIM 14 to clear the self diagnostic 
display.

H4

00

Content Heat roller low temperature detection

Detail

1) When the target temperature (165°C) is 

not reached in 55 sec after starting 
warming-up.

2) When the temperature below 100°C is 

detected for 300ms under the ready print 
state.

∗ "Starting warming-up" means not only that 

in power supply but also reset that in reset 
from shut-off and in side door close. (The 
timing of generating H4 is not limited to 
that in power supply.)

Cause

Thermistor abnormality
Heater lamp abnormality
Thermostat abnormality
Control PWB abnormality

Check 
and 
remedy

Use SIM 5-02 to check the heater lamp 
blinking operation.
When the lamp blinks normally.
Check the thermistor and its harness.
Check the thermistor input circuit on the 
control PWB.
When the lamp does not light up.
Check for disconnection of the heater lamp 
and the thermostat. Check the interlock 
switch.
Check the power PWB and the lamp control 
circuit on the MCU PWB.
Use SIM 14 to clear the self diagnostic 
display.

Main 
code

Sub 

code

Details of trouble

AR-203E/5420/M200/M201  SIMULATION, TROUBLE CODES  10 - 43

L1

00

Content Feeding is not completed within the 

specified time after starting feeding. (The 
scan head locking switch is locked)

Detail

The white area and the black marking on the 
shading plate are used to obtain the 
difference in the CCD level values for 
judgment of lock. When the difference in the 
levels of which and black is small, it is judged 
that the black mark could not be scanned by 
lock and the trouble code "L1" is displayed.

Cause

The scan head is locked by the lock switch.
Mirror unit abnormality
The scanner wire is disconnected.
The origin detection sensor abnormality
Mirror motor harness abnormality

Check 
and 
remedy

Check to confirm that the scan head lock 
switch is released.
Use SIM 1-1 to check the mirror 
reciprocating operations.
When the mirror does not feed.
Check for disconnection of the scanner wire.
Check the harness and the connector 
between the mirror motor and the MCU 
PWB.
Replace the mirror unit.
Replace the MCU PWB.
When the mirror does feed.
Use SIM 1-2 to check the mirror home 
position sensor.

L3

00

Content Scanner return trouble

Detail

When the mirror base is returned for the 
specified time (6 sec) in mirror initializing 
after turning on the power, the mirror home 
position sensor (MHPS) does not turn ON. 
Or when the mirror base is returned for the 
specified time (about 6 sec) after start of 
copy return, the mirror home position sensor 
(MHPS) does not turn ON.

Cause

Mirror unit abnormality
Scanner wire disconnection
Origin detection sensor abnormality
Mirror motor harness abnormality

Check 
and 
remedy

Use SIM 1-1 to check the mirror 
reciprocating operations.
When the mirror does not return.
Check for disconnection of the scanner wire.
Check the harness and the connector 
between the mirror motor and the MCU 
PWB.
Replace the mirror unit.
Replace the MCU PWB.
When the mirror does feed.
Use SIM 1-2 to check the mirror home 
position sensor.

L4

01

Content Main motor lock detection

Detail

When the main motor encoder pulse is not 
detected for 100 msec.

Cause

Main motor unit abnormality
Improper connection or disconnection the 
main motor and the harness.
MCU PWB abnormality

Check 
and 
remedy

Use SIM 25-01 to check the main motor 
operations.
Check connection of the main motor 
harness/connector.
Replace the main motor.
Replace the MCU PWB.

Main 
code

Sub 

code

Details of trouble

L4

32

Content Exhaust fan motor lock detection trouble

Detail

The error detection is started after 2 sec 
from starting rotation of the exhaust fan 
motor.
1) The continuous rotation state of 250ms is 

not detected for 1 sec after starting 
detection.

2) When the lock sensor (in the exhaust fan) 

detects the HIGH level (unstable) after 
detection the lock state (stable state).

Cause

Exhaust fan motor connector connection 
trouble
Exhaust fan motor trouble
MCU PWB trouble

Check 
and 
remedy

Exhaust fan motor connector connection 
check
Exhaust fan motor replacement
Replace the MCU PWB.

L6

10

Content Polygon motor lock detection
Detail

The lock signal (specified rpm signal) does 
not return within a certain time (about 20 
sec) from starting the polygon motor 
rotation.

Cause

Polygon motor unit abnormality
Improper connection or disconnection of the 
polygon motor and the harness.
MCU PWB abnormality

Check 
and 
remedy

Use SIM 61-1 to check the polygon motor 
operations.
Check connection of the polygon motor 
harness/connector.
Replace the polygon motor.
Replace the MCU PWB.

U1

03

Content FAX board battery error

Details

The SRAM backup battery voltage on FAX 
PWB falls.

Cause

The SRAM backup battery voltage on FAX 
PWB falls.

Check 
and 
remedy

Check voltage of the SRAM back up battery.
Replace the battery.

U2

04

Content EEPROM read/write error (Serial 

communication error)

Detail

EEPROM access process error

Cause

EEPROM abnormality

Check 
and 
remedy

Check that the EEPROM is properly set.
Use SIM 16 to cancel the trouble.
Replace the MCU PWB.

11

Content Counter check sum error (EEPROM)
Detail

Check sum error of the counter area in the 
EEPROM

Cause

EEPROM abnormality

Check 
and 
remedy

Check that the EEPROM is properly set.
Use SIM 16 to cancel the trouble.
Replace the MCU PWB.

40

Content CRUM chip communication error

Detail

An error occurs in MCU-CRUM chip 
communication.

Cause

CRUM chip trouble

Defective contact of developing unit
MCU PWB trouble

Check 
and 
remedy

Replace the CRUM chip.

Check installation of the developing unit.
Cancel by turning OFF/ON the power.

Replace the MCU PWB.

Main 
code

Sub 

code

Details of trouble