Lexmark 4044-XXX, E310 manual Service Manual, Action

4044-XXX

FRU	Action
Model E312	Turn the printer off and disconnect
Fuser Lamp	the fuser lamp wires from the fuser.
Lamp Cable	Check for continuity across the fuser
Thermistor	lamp wire contacts. If there is
LVPS	continuity, go to step 1: Continuity.
	If there is no continuity, go to
	step 2: No Continuity.
	Step 1: Continuity
	Measure the voltage at connector
	CN502 on the LVPS. It should match
	the line voltage. If it does not,
	replace the LVPS. If line voltage is
	present, check the fuser lamp cable
	for continuity. Replace if
	defective.Make sure the fuser
	thermistor is correctly connected to
	CN10 on the engine board. If the
	problem persists, disconnect the
	thermistor cable from CN1o on the
	engine board and measure the
	voltage between CN10-1 and
	ground. The voltage measures
	approximately 3.9 V dc. If the voltage
	is incorrect, replace the engine
	board. If correct, replace the
	thermistor.
	Step 2: No Continuity
	Check the thermal fuse for continuity.
	If incorrect, replace the thermal fuse.
	If correct, replace the lamp.

2-20Service Manual