Dell 1135N Service Manual page 131

6) Cover Open
Description : The ERROR lamp is on even when the print cover is closed.
1. The hook lever in the front cover.
2. Check the connector
and circuit of the cover switch department
in the Main Control board.
Service Manual
Alignment and Troubleshooting
Replace the front cover,
if defective.
1. Check the insertion of the
2. Replace the Main Control
4-58
Cover Open S/W Connect.
board or HVPS board