Lexmark 5021-0XX manual Transfer belt cleaning roller clutch service check, Cleaning roller

5021-0XX

992—Transfer belt cleaning roller clutch service check

Step	Questions / actions	Yes	No
1	Turn printer off and remove	Go to step 2.	Replace faulty
	printer right cover. See		cleaning roller
	“Right cover removal” on		clutch. See
	page 4-22. Disconnect		“Cleaning roller
	transfer belt cleaning roller		clutch removal”
	clutch from cable. Measure		on page 4-36.
	resistance between two
	outer pins on cleaning
	roller clutch. Does
	resistance measure
	between 198 and 242
	ohms?
2	Remove I/O board shield.	Replace I/O	Replace cable.
	See “I/O board removal”	board. See “I/O
	on page 4-70for steps to	board removal”
	remove I/O board shield.	on page 4-70. If
	Disconnect cable from	problem
	DCN10 on I/O board.	persists, go to
	Check cable continuity from	step 3.
	DCN10 pins 3 and 4
	(cable) to connector that
	attaches to cleaning roller
	clutch. Ensure that pins are
	not shorted. Is cable okay?
3	Remove engine controller	Replace engine	Replace cable.
	board shield. See “Engine	controller board.
	controller board removal”	See “Engine
	on page 4-55for steps to	controller
	remove shield. Check cable	board removal”
	that connects I2CN on	on page 4-55.
	engine controller board to
	DCN3 on I/O board for
	proper connection,
	damage, pin shorting, and
	continuity. Is cable okay?

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