Service Call Tables
D014/D015/D078/D079 4-10 SM
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
Laser Synchronization Detector Error: Y Leading Edge (Not LD0)
SC223 D
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
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