Samsung ML-1755 Service Manual page 71

T RO U B L E S H O OT I N G
7.3.6 Cover Open
• Description
The ERROR lamp is on even when the print cover is closed.
Check and Cause
1. The Hook Lever in the top cover may be defective.
2. Check the connector (Engine B'd↔HVPS) and circuit of
the cover switch department in the Main Control board.
Perform DCU mode : If Error state '64' occurs, Check the
related codes of the Cover Open Error.
7.3.7 No lamp on when the cover is open
• Description
The ERROR lamp does not come on even when the printer cover is open
Check and Cause
1. Check the connector(CN8) and circuit of the cover switch
department in the Main Control board. Perform DCU
mode : If Error state '64' occurs, Check the related codes
of the Cover Open Error
Training Manual
7-14
Solution
1. Replace the hook lever, if defective.
2. Check the insertion of the Cover Open S/W
Connect.
3. Replace the Main Control board or Cover Open
S/W.
Solution
1. Check the insertion of the Cover Open S/W
Connect.
2. Replace the Main Control board or Cover Open
S/W.
Samsung Electronics