Ricoh A-P4, Service Manual

Page: 153 / 381

more than 4.8V during TD sensor initial set-
ting.
• Toner supply defective (confirm that
the toner seal strip has been removed
from toner cartridge)
395 D
Development output abnormal
• Poor connection at the development
bias terminal
• HVPS connectors or harnesses loose,
broken, defective
• HVPS defective
A development bias leak signal was de-
tected. High voltage output to the develop-
ment unit exceeded the upper limit (65%)
for 60 ms.
401 D
Transfer roller leak detected • HVPS board defective
• Poor cable connection or defective
cable
• Transfer connector defective
A transfer roller current leak signal is de-
tected.
402 D
Transfer roller open error • HVPS defective
• Transfer connector cable defective
• Transfer connector defective
• Poor PCU connection
The transfer roller current feedback signal
is not detected.
403 D
Transfer belt position sensor error • Main motor malfunction
• Transfer belt contact clutch defective
• Transfer belt position sensor harness
or connector loose, broken, defective
• Transfer belt position sensor defective
The transfer belt position sensor did not ac-
tivate after the transfer belt contact clutch
was switched on twice and rotated once.
405 D
Transfer belt error • Main motor malfunction
• Transfer belt contact clutch defective
• Transfer belt position sensor harness
or connector loose, broken, defective
• Transfer belt position sensor defective
The transfer belt did not move away from
the drum during the ID sensor pattern check.
440 D
Main motor error
• Main motor overload
• Main motor drive board defective
A main motor lock signal was not detected
within 2 sec. after the main motor turned on.
4. Troubleshooting
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