Ricoh G035 Service Manual page 273

SC323: LD Drive Current Over
Definition [B]
The LD drive board applies more than 110 mA to the LD.
Possible Causes
• LD unit defective (not enough power, due to aging)
• Poor connection between the LD unit and the BICU board
• BICU defective
SC326: 2nd Laser Synchronization Error
Definition [B]
The 2nd laser synchronization signal cannot be detected by the main scan
synchronization detector board even if the laser diodes are activated.
Possible Causes
• 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
SC327: LD Unit Home Position Error 1
Definition [B]
The LD unit home position sensor does not detect an on condition when the LD
unit moves to its home position.
Possible Causes
• LD unit home position sensor defective
• LD positioning motor defective
• LD unit movement blocked because of incorrect connector routing
SC328: LD Unit Home Position Error 2
Definition [B]
The LD unit home position sensor does not detect an off condition when the LD
unit moves from its home position.
Possible Causes
• LD unit home position sensor defective
• LD positioning motor defective
• LD unit movement blocked because of incorrect connector routing
SM
SERVICE CALL CONDITIONS
7-3 G035