Other Errors - Samsung SCX-472 series Service Manual

4.2.4. Other errors

1) Multi-feeding
•
Description : Multiple sheet of paper are fed at once.
Check and cause
Pick clutch or Regi clutch does not work properly.
Pick up/ Forward / Retard roller is worn out or contaminated.
2) No-Power
•
Description : When system power is turned on, LED and LCD on the operator panel do not come on.
Check and cause
The connection between main board and OPE board is bad.
HVPS/SMPS output is abnormal.
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Solution
Replace the defective clutch if necessary.
Clean or replace the defective roller.
Solution
Reconnect or replace the harness.
Replace the HVPS/SMPS board.
4. Alignment and Troubleshooting
4-48