Ricoh S-C4.5 Field Service Manual page 156

6. Troubleshooting
No.
Definition
193 B
198 B
302 B
6
320 B
321 B
154
Symptom
Image transfer error
Scanned images are not transferred to the
controller memory within one minute.
Memory address error
The BICU does not receive the memory
address report from the controller within
one minute.
Charge roller current leak
The polling module detects a current leak
of the charge roller.
Polygonal mirror motor error
The polygon mirror motor does not reach
the operating speed within 10 seconds.
Or, the polygon mirror motor remains out
of the operating speed for 0.2 second
after reaching the operating speed.
No laser writing signal (F-GATE) error
The polling module does not detect the
laser writing signal (F-GATE) asserting
after the laser crosses 5 mm from the start
point on the drum surface.
Possible Cause
• Defective BICU board
• Defective controller board
• Inconsistency between the BICU
firmware and the controller firmware
• Defective BICU
• Defective controller
• Defective charge roller
• Defective high voltage supply board
• Loose connection of the PCU
• Defective polygon mirror motor
• Loose connection between the
polygonal mirror motor and the BICU
• Defective cable between the BICU
and the polygon mirror motor
• Defective BICU
• Defective BICU
• Loose connection on the fax controller
or the printer controller
• Defective fax controller or printer
controller