Lexmark 4059-XXX manual If the +42 V dc test point does not

4059-XXX

	FRU	Action
3	LVPS	If the +42 V dc test point does not
	Interconnect Board	measure approximately +42 V dc,
		check the continuity of the cable
		connected between J3 on the fuser
		control and J1 on the interconnect
		board. If the cable does not measure
		continuity, replace the cable. If the
		cable measures continuity, check the
		voltage at CN3-18 on the LVPS. The
		voltage measures approximately
		+42 V dc. If the voltage is correct,
		replace the interconnect board
		assembly. If the voltage is incorrect,
		replace the LVPS.
4	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.

2-534059 Service Manual