2-9
Confidential
3. ERROR INDICATIONS
This machine includes a self-diagnosis function. If the machine does not work normally it 
judges that an error has occurred, and indicates the corresponding error message on the 
LCD, which in turn helps the service personnel to quickly find out the problem.
3.1 Error Codes
Errors in shaded column do not usually occur during normal use. The possible causes are 
noise around the installation site, fluctuation of the power supply voltage, and failures in the 
software.
Error 
codes
Description
Refer 
to:
Error 
codes
Description
Refer 
to:
0100 ― 0504
After the heat unit was heated normally, the 
center thermistor of the fuser unit detected a 
temperature lower than the specified value.
2-28
0201
Cannot detect the synchronized signal 
of the main motor.
The speed of the main motor does not 
stabilize within the specified time.
2-26 0505
The center thermistor of the fuser unit 
detected a temperature rise greater 
than the specified value within the 
specified time.
2-28
0202 ― 0506
The center thermistor of the fuser unit 
detected a temperature fall greater than the 
specified value within the specified time.
2-29
0203 ― 050A
The hardware detected a temperature 
error through the center thermistor or 
the side thermistor of the fuser unit.
2-30
0204 ― 050B
When the center thermistor of the fuser unit 
was lower than the idle temperature, the side 
thermistor detected a temperature higher 
than the specified temperature.
2-30
0205 ― 050C
When the center thermistor of the fuser unit 
was higher than the idle temperature, the 
side thermistor detected a temperature lower 
than the specified temperature.
2-30
0206 ― 050D ―
0207 ― 050F An error occurred in the fuser unit. 2-30
0208 ― 0600
A communication error occurred 
between the ASIC controlled by 
engine and the motor driver.
2-31
0209 ― 0700 ―
0300
Cannot detect the lock signal of the polygon 
motor for the laser unit (second time).
2-27 0800 ―
0305
Cannot detect the lock signal of the polygon 
motor for the laser unit (first time).
2-27 0900
Detected irregular power supply for 
more than 100 times.
2-31
0401
Cannot detect the synchronized signal 
of the polygon motor for the laser unit 
(second time).
2-27
0A01 ―
0402 ― 0A02 Detected a fan failure. 2-32
0405
Cannot detect the synchronized signal of the 
polygon motor for the laser unit (first time).
2-27 0B01
An error occurred in the high-voltage 
power supply PCB ASSY while operating.
2-32
0501
The center thermistor of the fuser unit 
has not reached the specified 
temperature within the specified time.
2-28 0B02
An error occurred in the high-voltage 
power supply PCB ASSY when the 
machine was in the ready state.
2-32
0502
The center thermistor of the fuser unit has 
not reached the specified temperature 
within the specified time after it was 
heated normally to the certain level.
2-28 0C00 ―
0503
The center thermistor of the fuser unit 
detected a temperature higher than 
the specified value.
2-28 0D01 ―