Samsung ML-1665 Service Manual page 77

6) Dark Image or a Black Page
Description : The printed image is dark.
contacts between power supply in the
side of the Developer and charge
Service Manual
Alignment and Troubleshooting
1. No charge voltage
in the engine board.
2. Charge voltage is not
turned on due to the bad
terminal of HVPS.
Clean the high voltage charge
terminal.
1. Check the state of the connector
which connects the engine board
and HVPS.
2. Replace the HVPS if not solved
by the above direction 1 and 2.
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Samsung Electronics