Lexmark 4069-XXX manual Fuser Solenoid Service Check

4069-XXX

Fuser Solenoid Service Check

Service Tip: Try changing the envelope enhance level setting. A different setting may correct the problem.

Note: Check the fuser envelope conditioner solenoid adjustment as described in the adjustment section “Fuser Solenoid Adjustment” on page 4-3.

	FRU	Action
1	Fuser Envelope Conditioner	The operation of the fuser solenoid
	Solenoid	can be observed by removing the
		redrive assembly. Check for proper
		mechanical operation of the solenoid
		and associated hardware, link and so
		on. If correct, check the resistance of
		the solenoid between J4-1 and J4-2.
		The resistance measures between 5
		ohms and 10 ohms. If incorrect,
		replace the solenoid assembly.
2	Fuser Control Board	The solenoid receives power from the
		engine board. The fuser control board
		receives +42Vdc from the LVPS via
		the interconnect board. Check for
		approximately +42 V dc at the
		+42 V dc test point on the fuser control
		board. If the voltage is correct, replace
		the fuser control board.
3	LVPS	If the +42 V dc test point does not
	Interconnect Board	measure approximately +42 V dc,
		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.

2-50Service Manual