Ricoh A-C4, Service Manual

Page: 205 / 497

SERVICE CALL CONDITIONS 20 June 2005
4-4
SBU communication error 144 B
Immediately after power on, the
operation check done by the SIB for the
SBU failed because the SBU was not
operating normally.
•
Flat film or harness connectors
between the SBU and SIB are loose,
disconnected, or damaged
•
Replace SBU
•
Replace BICU
Copy Data Security Unit error 165 B
An error occurred when the machine
attempted to set the Copy Data
Security Unit SD card.
•
The Copy Data Security Unit card not
installed
•
The Copy Data Security Unit card is
installed, but it is not the correct type
for the machine.
Charge roller current leak 302 D
A charge roller current leak signal was
detected.
•
Charge roller damaged
•
High voltage supply board defective
•
PCU harness defective or
disconnected
Charge roller current correction error 304 D
The charge roller bias correction is
performed twice even if the maximum
charge roller bias (-2000V) is applied to
the roller.
•
ID sensor defective
F-Gate error: No laser writing signal 321 D
The laser writing signal (F-GATE) does
not go to LOW for more than 30
seconds after the copy paper reaches
the registration sensor.
•
BICU board defective
•
PCI harness between the controller
board and the BICU defective or
disconnected
Synchronization error 322 D
The synchronization signal was not
issued within 500 ms after the LD fired
while the polygon motor was turning at
the prescribed number of revolutions.
•
Laser synchronization board
connectors loose, disconnected, or
damaged
•
Laser synchronization board
defective
•
LD drive board defective
LD drive current too high 323 D
The LD drive board applies more than
100 mA to the LD.
•
LD unit defective (not enough power,
due to aging)
•
Poor connection between the LD unit
and the BICU board
•
BICU defective
LD unit home position error 1 327 D
The LD unit home position sensor does
not detect an on condition when the LD
unit moves to its home position.
•
HP sensor/harness defective
•
LD unit home position sensor
defective
•
LD positioning motor harness
defective
•
LD unit movement blocked because
of incorrect connector routing
LD unit home position error 2 328 D
The LD unit home position sensor does
not detect an off condition when the LD
unit moves from its home position.
•
HP sensor/harness defective
•
LD positioning/harness motor
defective
•
LD unit movement blocked because
of incorrect connector routing