Samsung SCX-483xFD Service Manual page 144

2) No Power
Description : When system power is turned on, all lamps on the operator panel do not come on.
1. Check if the power input and
SMPS output are normal.
2. Check if the OPE connector is
connected properly. OPE harness or
OPE board is defective.
Service Manual
SCX-483x/5x3x series
4. Alignment and Troubleshooting
4-64
Replace the power supply cord or
SMPS.
1. Reconnect the OPE harness.
2. Replace the OPE harness or
OPE board.
Samsung Electronics