Ricoh D069 Field Service Manual page 246

3. Appendix: Service Call Conditions
No.
Definition
Transfer roller leak error (positive electrode)
401 B
The feedback voltage of the transfer roller
is insufficient.
3
Transfer roller leak error (negative electrode)
402 B
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
500 B
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
541 A
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
542 A
times consecutively. Or, the fusing
temperature is not detected within 25 or 35
seconds.
54
Symptom 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