Samsung ML-1665 Service Manual page 68

Alignment and Troubleshooting
2) No lamp on when the cover is open
Description : The ERROR lamp does not come on even when the printer cover is open
1. Check the insertion of the Cover
1. Check the connector
Open S/W Connect.
and circuit of the cover switch
2. Replace the SMPS/HVPS board.
department in the SMPS board.
4-20
Service Manual
Samsung Electronics