Ricoh D014 Service Manual page 462

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