Ricoh B291 Service Manual page 226

SERVICE CALL CONDITIONS
144 B SBU communication error
Immediately after power on, the
operation check done by the SIB for the
SBU failed because the SBU was not
operating normally.
165 B Copy Data Security Unit error
An error occurred when the machine
attempted to set the Copy Data
Security Unit SD card.
302 D Charge roller current leak
A charge roller current leak signal was
detected.
304 D Charge roller current correction error
The charge roller bias correction is
performed twice even if the maximum
charge roller bias (-2000V) is applied to
the roller.
321 D F-Gate error: No laser writing signal
The laser writing signal (F-GATE) does
not go to LOW for more than 30
seconds after the copy paper reaches
the registration sensor.
322 D Synchronization error
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.
323 D LD drive current too high
The LD drive board applies more than
100 mA to the LD.
327 D LD unit home position error 1
The LD unit home position sensor does
not detect an on condition when the LD
unit moves to its home position.
328 D LD unit home position error 2
The LD unit home position sensor does
not detect an off condition when the LD
unit moves from its home position.
B291/B295/B296/B297
CÓPIA NÃO CONTROLADA
4-4
CÓPIA NÃO CONTROLADA
• Flat film or harness connectors
between the SBU and SIB are loose,
disconnected, or damaged
• Replace SBU
• Replace BICU
• 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 damaged
• High voltage supply board defective
• PCU harness defective or
disconnected
• ID sensor defective
• BICU board defective
• PCI harness between the controller
board and the BICU defective or
disconnected
• Laser synchronization board
connectors loose, disconnected, or
damaged
• Laser synchronization board
defective
• LD drive board defective
• LD unit defective (not enough power,
due to aging)
• Poor connection between the LD unit
and the BICU board
• BICU defective
• HP sensor/harness defective
• LD unit home position sensor
defective
• LD positioning motor harness
defective
• LD unit movement blocked because
of incorrect connector routing
• HP sensor/harness defective
• LD positioning/harness motor
defective
• LD unit movement blocked because
of incorrect connector routing
SM