Ricoh S-P2 Service Manual page 58

4. Troubleshooting
The PFGATE ON signal does not assert within
1 second.
The PFGATE ON signal still assert within 7
seconds, after processing the image in a
normal job
Charge roller current leak
The PWM duty output exceeded 60% for
302 B
longer than 200 ms, indicating a leak in the
charge roller current.
4
Polygon motor error
The polygon motor did not enter the lock state
within 10 sec. after it switched on.
-or-
Once the polygon motor was detected in the
320 B
lock state after started to rotate, within 0.2 sec.
it entered the unlock state.
-or-
After the polygon motor switched off, it did not
enter unlock state within 3 sec.
1st beam laser synchronization error
With all doors closed the polygon motor is
322 B
locked and not rotating, or the laser
synchronization detector could not detect 1st
beam laser detection signal within 500 ms.
LD drive current exceeded
323 C
The LD driver detected an error for 50 ms.
56
• Defective controller board
• Disconnect harness
• Cartridge (charge roller) defective
• High voltage supply board
defective
• Defective cartridge connection
• Polygon motor
• Polygon motor cable
• Laser synchronization detector
board out of position
• Laser synchronization detector
board or cable defective
• Laser synchronization mirror out of
position
• LD unit defective
• Engine board defective
• LD unit defective