Lexmark 5016-001 manual Cover Interlock Service Check

5016-001

Cover Interlock Service Check

Check that switches S2, S3, and S4 are open. These should be open anytime the cartridge, fuser or front covers are not latched properly.

When a cover is opened, switch S2 opens the +24 V dc supply to the engine board and the AC line from the LVPS to the fuser lamps. Switches S3 and S4 open the +5 V dc supply from the engine board to the printhead.

If Door Open displays, go to A.

If a 922 Fuser Error displays, go to B.

ADoor Open displayed.

	FRU	Action
1	Interlock Switch	Check the interlock switch actuator hardware for
	Mechanism	proper operation and be sure:
		• Actuator 1 activates door switch S2.
		• +5 V dc to interlock switches S3 and S4.
		If the mechanism does not operate properly or
		activate any of the switches, repair as necessary.

Diagnostic Information 2-45