Ricoh B039 - Page 130

SERVICE CALL CONDITIONS
B039/B040/B043 4-4 SM
No.
Definition
Symptom Possible Cause
Laser synchronization error322 B
The main scan synchronization
detector board cannot detect the laser
synchronization signal for more than 5
consecutive 100 ms intervals.
• Poor connection between the LD unit
and the BICU board
• Damaged cable between BiCU and
LD unit
• LD unit out of position
• LD unit defective
• BiCU board defective
TD sensor error390 B
The TD sensor outputs less than 0.2 V
or more than 4.0 V 10 times
consecutively during copying.
• TD sensor abnormal
• Poor connection of the PCU
Development bias leak391 B
A development bias leak signal is
detected.
• Poor connection of the PCU
• High voltage supply board defective
TD sensor initial setting error392 B
TD sensor initial setting is not
performed correctly.
• ID sensor defective
• No developer
• Drum does not turn
• Development roller does not turn
• Poor connection of the PCU
• The voltage is not applied to charge
roller
Transfer roller leak error 1401 B
A current leak signal for the transfer
roller is detected.
A current feedback signal for the
transfer roller is not detected.
• High voltage supply board defective
• Poor connection of the PCU
• Transfer/separation unit set
incorrectly
• Transfer roller damaged
Transfer roller leak error 2402 B
A current leak signal for the transfer
roller is detected.
A current feedback signal for the
transfer roller is not detected.
• High voltage supply board defective
• Poor connection of the PCU
• Transfer/separation unit set
incorrectly
• Transfer roller damaged
Main motor lock500 B
A main motor lock signal is not
detected for more than 7 consecutive
checks (700 ms) after the main motor
starts to rotate, or the lock signal is not
detected for more than 7 consecutive
checks during rotation after the last
signal.
• Too much load on the drive
mechanism
• Main motor defective
Upper paper tray lift motor malfunction (optional paper tray units)503 B
The paper lift sensor fails to activate
twice continuously after the tray lift
motor has been on for 18 seconds.
• Paper lift sensor defective
• Tray lift motor defective
• Too much load on the drive
mechanism
• Poor tray lift motor connection