Service Call 441-498
SM 5-37 D146/D147/D148/D149/D150
SC No. Level Error Name/Error Condition/Major Cause/Solution
SC491-00 D 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
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