Lexmark 4059-XXX manual

4059-XXX

	FRU	Action
4	LVPS Interconnect Board	Check the +42 V dc test point on the
	Envelope Conditioner Cable	fuser control board. If the voltage is
		incorrect, check the continuity of the
		envelope conditioner cable. If the
		cable does not measure continuity,
		replace the cable. If the cable
		measures continuity, check the
		voltage at J1-2 on the interconnect
		board. The voltage measures
		approximately +42 V dc. If incorrect,
		check the voltage at CN3-18 on the
		LVPS. It measures approximately
		+42 V dc. If incorrect, replace the
		LVPS. If correct, replace the
		interconnect board assembly.
5	Fuser DC Cable (Engine	Check for continuity of the DC fuser
	board to Fuser Board cable)	cable that is attached between J2 on
	Engine Board	the engine board and J1 on the fuser
		control board. If the cable does not
		measure continuity, replace the cable.
		If the cable measures continuity,
		replace the engine board.

2-554059 Service Manual