Ricoh S-C4.5 Field Service Manual page 158

6. Troubleshooting
No.
Definition
401 B
402 B
6
500 B
541 A
542 A
156
Symptom
Transfer roller leak error (positive electrode)
The feedback voltage of the transfer roller
is insufficient.
Transfer roller leak error (negative electrode)
The feedback voltage of the transfer roller
is insufficient.
Main motor error
The main motor does not reach its
operation speed within 0.7 second. Or,
the main motor remains out of its operation
speed for 0.7 second after reaching the
operation speed.
Fusing thermistor open error
The fusing temperature remains lower
than the specified temperature by 20
degrees Celsius.
Fusing temperature warm-up error
The fusing temperature rises 7 degrees or
less in two seconds; and this continues 5
times consecutively. Or, the fusing
temperature is not detected within 25 or
35 seconds.
Possible Cause
• Defective high voltage supply board
• Loose connection of the PCU
• Incorrect installation of the transfer
unit or the separation unit
• Defective transfer roller
• Defective high voltage supply board
• Loose connection of the PCU
• Incorrect installation of the transfer
unit or the separation unit
• Defective transfer roller
• Overload
• Defective main motor
• Defective thermistor
• Incorrect installation of the thermistor
• Defective power supply unit
• Loose connectors
• Defective thermistor
• Incorrect installation of the thermistor
• Defective fusing lamp
• Defective power supply unit