Lexmark 5021-0XX manual Black developer clutch service check

5021-0XX

904—Black developer clutch service check

Step	Questions / actions	Yes	No
1	Turn printer off and remove	Go to step 2.	Properly connect
	right cover. See “Right		cable. Go to step
	cover removal” on		5.
	page 4-22. Is developer
	clutch cable properly
	connected?
2	Is developer clutch cable	Replace	Go to step 3.
	damaged?	developer drive
		assembly. See
		“Developer
		drive assembly
		removal” on
		page 4-32.
3	Disconnect clutch cable.	Go to step 4.	Replace
	On clutch side, measure		developer drive
	resistance between two		assembly. See
	outer pins. Is resistance		“Developer
	between 139 and 171		drive assembly
	ohms?		removal” on
			page 4-32.
4	Remove I/O board shield.	Replace I/O	Replace cable.
	See “I/O board removal”	board. See“I/O	Go to step 5.
	on page 4-70for steps to	board removal”
	remove I/O board shield.	on page 4-70.
	Disconnect cable from	Go to step 5.
	DCN10 on I/O board.
	Check cable continuity from
	DCN10 pins 23 and 24 to
	connector that attaches to
	black developer clutch
	cable. Ensure that pins are
	not shorted. Is cable okay?

Diagnostic information 2-35