MX-B201D (serv.man9). Service Manual (October 2011). - Sharp Copying Equipment Service Manual (repair manual). Page 119

MX-B201/B201D  SIMULATION, TROUBLE CODES  10 - 44

：'11/Oct/17

F2

74

Content Toner cartridge CRUM error
Detail

MCU

Cause

Toner cartridge (CRUM) trouble.
MCU PWB trouble.
Connector/harness trouble.

Check 
and 
remedy

Replace the toner cartridge.
Replace the MCU PWB.
Connector and harness check.

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

60

Content AFAX plug detect error
Detail

For USB connection with AFAX, ANB cannot 
detect the connection with AFAX.

Cause

USB connected error between ANB and 
AFAX

Check 
and 
remedy

Replace the ANB PWB or AFAX PWB.

90

Content AFAX USB communicate error
Detail

For interface, ANB cannot be communicated 
with AFAX.

Cause

Interface error between ANB and AFAX

Check 
and 
remedy

Check the connection between ANB and 
AFAX. 
Replace the ANB PWB or AFAX PWB.

92

Content ANB flash error

Detail

Can not read /write to Flash ROM on the 
ANB PWB.

Cause

Access error to Flash ROM.

Check 
and 
remedy

Replace the ANB PWB.

94

Content AFAX register error

Detail

Can not access to MODEM on the AFAX 
PWB.

Cause

Access error to MODEM

Check 
and 
remedy

Replace AFAX 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