Lexmark 5021-0XX manual Board removal

5021-0XX

Step	Questions / actions	Yes	No
8	Disconnect cable from	Replace I/O	Replace cable
	DCN13 on I/O board.	board. See “I/O	that connects
	Check the following on	board removal”	ACN1 on LVPS
	disconnected cable	on page 4-70.	to DCN13 on I/O
	connector:	Go step 10.	board. Remove
	Pin 1 to pin 2— 24VDC		RIP board cage
			to gain access to
	Pin 9 to pin 12— 5VDC		cable. See “RIP
	Are voltages present?		board cage
			removal” on
			page 4-57. Go
			to step 9.
9	Reassemble and retest	Problem solved.	Go to step 10.
	printer. Does error clear?
10	Check cable that connects	Replace engine	Replace cable.
	engine controller board	controller board.
	connector I2CN to I/O	See “Engine
	board connector DCN3 for	controller
	continuity and pin shorts. Is	board removal”
	cable okay?	on page 4-55.

2-50Service Manual