Lexmark 5021-0XX On page 4-70. If Paper guide, See Paper guide C, Assembly removal on Paper guide

5021-0XX

Step	Questions / actions	Yes	No
6	Remove paper tray, fill with	Replace I/O	Replace paper
	paper and reinsert. Check	board. See “I/O	guide (C)
	voltage level on DCN16 pin	board removal”	assembly . See
	8. Is 0 VDC present?	on page 4-70. If	“Paper guide
		problem	(C) assembly
		persists, replace	removal” on
		engine controller	page 4-47.
		board. See
		“Engine
		controller
		board removal”
		on page 4-55.
7	Turn printer off. Remove	Replace paper	Replace cable.
	paper guide (C) assembly.	guide (C)
	See “Paper guide (C)	assembly . See
	assembly removal” on	“Paper guide
	page 4-47. Check cable for	(C) assembly
	continuity that connects	removal” on
	DCN16 pins 7, 8, and 9 to	page 4-47.
	paper empty sensor. Also
	check for shorted pins. Is
	cable okay?
8	Touch positive lead to	Replace I/O	Go to step 9.
	DCN13 pin 9 and pin 11 to	board. See “I/O
	ensure 5 VDC is being	board removal”
	supplied to I/O board. Is 5	on page 4-70.
	VDC present?
9	Check cable continuity	Replace LVPS.	Replace cable.
	between LVPS ACN1 and I/	See “Low
	O board DCN13. Also	voltage power
	check for shorted pins. Is	supply (LVPS)
	cable okay?	with cage
		removal” on
		page 4-60.

2-96Service Manual