Lexmark 5021-0XX manual Output tray full service check, Board removal See Paper exit

			5021-0XX
Output tray full service check
Step	Questions / actions	Yes	No
1	Ensure output tray full	Go to step 2.	Replace paper
	sensor flag swings with		exit assembly.
	ease and is not broken or		See “Paper exit
	damaged. Is flag working		assembly
	properly?		removal” on
			page 4-49.
2	Turn printer off and remove	Go to step 3.	Properly connect
	I/O board shield. See “I/O		cable.
	board removal” on
	page 4-70for steps to
	remove I/O board shield. Is
	cable properly connected
	to I/O board connector
	DCN7?
3	Reconnect operator panel.	Go to step 4.	Go to step 7.
	Turn printer on. Touch
	negative lead of voltmeter
	to metal bracket that holds
	I/O board to obtain ground.
	Touch positive lead to
	DCN7 pin 7 to ensure 5
	VDC is being supplied to
	output tray full sensor. Is 5
	VDC present?
4	Check voltage level on	Go to step 5.	Go to step 6.
	DCN7 pin 8. Is 5 VDC
	present?
5	Activate output tray full	Replace I/O	Replace paper
	sensor flag. Check voltage	board. See “I/O	exit assembly.
	level on DCN7 pin 8. Is 0	board removal”	See “Paper exit
	VDC present?	on page 4-70. If	assembly
		problem	removal” on
		persists, replace	page 4-49.
		engine controller
		board. See
		“Engine
		controller
		board removal”
		on page 4-55.

Diagnostic information 2-85