Ricoh V-C3 D081 Field Service Manual page 655

Laser synchronization detector error: K leading edge: LD0
While the polygon motor is rotating normally, no synchronizing detection signal is
SC220 D
output for LD0 black, or leading edge, even after the laser diode has been firing for
2 sec.
• 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: K leading edge (not LD0)
SC221 D
While the polygon motor is rotating normally, no synchronizing detection signal is
output for black, 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: Y leading edge: LD0
SC222 D
While the polygon motor is rotating normally, no synchronizing detection signal is
output for LD0 yellow, 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
Service Call Tables
3
77