Lexmark 5021-0XX manual Erase lamp service check, Erase lamp Removal on

5021-0XX

915—Erase lamp service check

Step	Questions / actions	Yes	No
1	Turn printer off and remove	Go to step 2.	Properly connect
	toner cartridges and		erase lamp.
	photodeveloper cartridge.		Retest printer. If
	Check erase lamp cable for		error clears,
	proper connection. Is erase		problem solved,
	lamp cable properly		otherwise go to
	connected?		step 2.
2	Check erase lamp for any	Replace erase	Go to step 3.
	visible damage. Is erase	lamp. See
	lamp damaged?	“Erase lamp
		removal” on
		page 4-27.
		Retest printer. If
		error clears,
		problem solved,
		otherwise
		remove toner
		cartridges and
		photodeveloper
		cartridge and go
		to step 3.
3	Set multimeter to check	Replace erase	Go to step 4.
	diodes. Looking at erase	lamp. See
	lamp through front cover,	“Erase lamp
	touch meter positive lead to	removal” on
	left LED connection and	page 4-27.
	meter negative lead to right	Retest printer. If
	LED connection. LED	error clears,
	should illuminate. Check all	problem solved,
	LEDs on erase lamp board.	otherwise go to
	Do any LEDs fail to	step 4.
	illuminate?
4	Remove I/O board shield.	Go to step 5.	Properly connect
	See “I/O board removal”		cable. Retest
	on page 4-70for steps to		printer. If error
	remove I/O board shield. Is		clears, problem
	cable properly connected		solved,
	to I/O board connector		otherwise go to
	DCN15?		step 5.

2-54Service Manual