Copy Quality Troubleshooting; Received Copies; Copies Made In Copy Mode - Ricoh FACSIMILE FAX77 Field Service Manual

5-2. Copy Quality Troubleshooting

1. Received Copies

If there is no fault in the transmitting terminal or on the line, but the copy quality is bad, either:
• Check that the printer cover is closed properly.
• Check the thermal head pulse width.
• Clean the thermal head (soft cloth, do not use water)
• Replace the thermal head or FCU.
If the output is always stretched: Check the printer mechanism and timing belts.

2. Copies made in Copy Mode

The following faults must be considered in addition to the printer faults mentioned above.
Symptom
Blank or black
copies
Vertical lines
Causes
Scanner or PCB failure
Dirty mirror, lens, ex-
posure glass, or xenon
lamp
Error bit in CCD
5-4
Remedies
Replace FCU or SBU.
Clean with a soft cloth
Replace SBU.