Service Call Tables
SM 4-11 D014/D015/D078/D079
Trouble-
shooting
Laser Synchronization Detector Error: M Leading Edge: LD0
SC224 D
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)
SC225 D
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
Laser Synchronization Detector Error: C Leading Edge: LD0
SC226 D
While the polygon motor is
rotating normally, no
synchronizing detection signal
is output for LD0 cyan, 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
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