Lexmark 4069-XXX manual Cover Open Switch/Cable Service Check

4069-XXX

Cover Open Switch/Cable Service Check

	FRU	Action
1	Toner Cartridge	Check the toner cartridge to make
		sure it is correctly installed and that
		the right and left cartridge tracks are
		not loose or broken. Check to make
		sure the cover open switch activation
		tab on the toner cartridge is not
		broken and that the tab correctly
		activates the cover open switch
		spring.
2	Cover Open Switch/Cable	Check the cover open switch for
	Assembly	proper mechanical operation. If
		incorrect, repair as necessary.
		Disconnect the cover open switch
		cable from J4 at the engine board
		and measure the voltage at J4-3. It
		measures approximately +5 V dc. If
		the voltage is incorrect, replace the
		engine board. If the voltage is
		correct, check the voltage at J4-1. If
		the voltage measures greater than
		+1.0 V dc, replace the engine board.
		If the voltage is correct, check the
		continuity between J4-1 and J4-3 on
		the cable. If no change in continuity
		occurs as the switch is activated,
		replace the cover open switch/cable
		assembly. If the continuity changes
		as the switch is activated, replace
		the engine board.
		Note: It is easier to check the
		voltages on J4 with the controller
		board removed.

Diagnostic Information 2-31