Ricoh D146 Service Manual page 512

Service Call 441-498
SC No. Level
SC492-00 C
D146/D147/D148/D149/D150
Error Name/Error Condition/Major Cause/Solution
High voltage power source: image transfer/paper transfer:
output error
SC detection signal (transfer) is L (abnormal) for 200 ms
consecutively during high voltage (transfer) output.
H/W error
§
Output power connector setting fault
§
Controller connector setting fault
§
Output high voltage Harness disconnection
§
Controller harness disconnection, short-circuit
§
Transfer unit setting fault
§
Control board_ IOB error (related signal error)
§
HVP_TTS error
Load error
§
Increase in paper transfer roller impedance (low
temperature environment/impedance rise/impedance rise
due to dirt)
§
Operation fault of paper transfer contact mechanism
§
Increase in image transfer belt impedance
§
Opening in load power supply path
§
Reset or replacement the harness of high voltage power
supply feed path
§
Reset or replace the harness between IOB-HVP_TTS
§
Reset or replace the transfer unit
§
Check operation of the contact mechanism
§
Replace the HVP_TTS
§
Replace the IOB
5-38 SM