Service Call Tables
D014/D015/D078/D079 4-12 SM
Laser Synchronization Detector Error: C Leading Edge (Not LD0)
SC227 D
While the polygon motor is
rotating normally, no
synchronizing detection signal
is output for cyan, leading
edgefor 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
FGATE error: Feedback remains HIGH for K write
SC230 D
After the start of timing to
create the black image, the
PFGATE register of the GAVD
did not assert.
Harness between the VBCU and
LDB unit disconnected, loose, or
defective.
LD unit defective
IPU defective
Controller board disconnected,
defective
HDD defective
FGATE error: Feedback remains LOW for K write
SC231 D
After the start of timing to
create the black image, the
PFGATE register of the
GAVD did not assert.
Harness between the VBCU and LDB
unit disconnected, loose, or defective.
LD unit defective
IPU defective
Controller board disconnected,
defective
HDD defective
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