Ricoh Aficio 2035e Service Manual page 189

Code No.
304 C Charge roller current correction error
The charge roller bias correction is
performed twice even if the maximum
charge roller bias (-2000V) is applied to
the roller.
321 C F-Gate error: No laser writing signal
The laser writing signal (F-GATE) does
not go to LOW for more than 30
seconds after the copy paper reaches
the registration sensor.
322 C 1st laser synchronization error
The 1st laser synchronization signal
cannot be detected by the main scan
synchronization detector board even if
the laser diodes are activated.
323 C LD drive current over
The LD drive board applies more than
100 mA to the LD.
326 C 2nd laser synchronization error
The 2nd laser synchronization signal
cannot be detected by the main scan
synchronization detector board even if
the laser diodes are activated.
327 B LD unit home position error 1
The LD unit home position sensor does
not detect an on condition when the LD
unit moves to its home position.
328 B LD unit home position error 2
The LD unit home position sensor does
not detect an off condition when the LD
unit moves from its home position.
SM
Symptom
4-3
SERVICE CALL CONDITIONS
Possible Cause
• ID sensor defective
• BICU board defective
• PCI harness between the controller
board and the BICU defective or
disconnected
• Poor I/F harness connection between
the laser synchronization detector
board and the LD unit.
• Laser synchronization detector board
out of position and angle of reflection
not correct
• Laser synchronization detector board
defective
• LD unit defective
• LD unit defective (not enough power,
due to aging)
• Poor connection between the LD unit
and the BICU board
• BICU defective
• Poor connection between the laser
synchronization detector board and
the LD unit.
• Laser synchronization detector board
out of position
• Laser synchronization detector board
defective
• LD unit defective
• HP sensor/harness defective
• LD unit home position sensor
defective
• LD positioning motor harness
defective
• LD unit movement blocked because
of incorrect connector routing
• HP sensor/harness defective
• LD positioning/harness motor
defective
• LD unit movement blocked because
of incorrect connector routing
B135/B138