Adjustment and Troubleshooting
7) No error message when the cover is open
Description: The Cover Open message does not appears on the LCD even when the print cover is open.
1.The ‘Open Cover’ microswitch may be stuck or faulty.
Use TECH mode(“cover sensor test”) to check cover switch operation. Check and replace switch if necessary.
2.Check the connector and cables between Switch and main PBA.
Replace the Main Control board or Cover Open S/W as necessary.
Service Manual
