Ricoh V-C3 D081 Field Service Manual page 656

3. Appendix: Service Call Conditions
SC223 D
3
SC224 D
SC225 D
78
Laser synchronization detector error: Y leading edge (not LD0)
While the polygon motor is rotating normally, no synchronizing detection signal is
output for yellow, leading edge for any LD other than LD0.
• Harness between the laser synchronizing detector and I/F unit is disconnected,
defective
• Check all connections between LD unit, LDB, IPU
• LD unit
• LDB defective
• IPU defective
Laser synchronization detector error: M leading edge: LD0
While the polygon motor is rotating normally, no synchronizing detection signal is
output for LD0 magenta, leading edge.
• Harness between the laser synchronizing detector and I/F unit is disconnected,
defective
• Check all connections between LD unit, LDB, IPU
• LD unit
• LDB defective
• IPU defective
Laser synchronization detector error: M leading edge (not LD0)
While the polygon motor is rotating normally, no synchronizing detection signal is
output for magenta, leading edge for any LD other than LD0.
• Harness between the laser synchronizing detector and I/F unit is disconnected,
defective
• Check all connections between LD unit, LDB, IPU
• LD unit
• LDB defective
• IPU defective