Ricoh D146 Service Manual page 511

SC No. Level
SC491-00 D
SM
Error Name/Error Condition/Major Cause/Solution
High voltage power source: charge/development: output error
SC detection signal (charge/development) is L (abnormal) for
200 ms consecutively during high voltage (charge/development)
output.
H/W error
§
Output contact setting fault
§
Controller connector set fault
§
Ground fault of output high voltage path
§
Surface/air clearance insufficient (arc discharge)
§
Controller harness disconnection, short-circuit
§
PCU setting fault
§
Control board _IOB error (related signal error)
§
HVP_CB error
Load error
§
Grounding fault of charging output, short-circuit with other
outputs
§
Surface/air clearance insufficient in charging output path
(including distance from other outputs)
§
Abnormal deterioration of drum, and over current due to
pinholes
§
Drum vs charge roller gap error (PCU error).
§
Over current due to drum surface condensation
§
Grounding fault of developing output, short-circuit with other
outputs
§
Surface/air clearance insufficient in developing output path
(including distance from other outputs)
§
Other
§
Cycle the main power off/on
§
Reset or replace the harness of high voltage power supply
feed path
§
Reset or replace the harness between IOB-HVP_CB
§
Reset or replace the PCU
§
Check the operation of the contact mechanism
§
Replace the HVP_CB
§
Replace the IOB
5-37
Service Call 441-498
D146/D147/D148/D149/D150