Lexmark 4026-0XX manual Hot Fuser Service Check, Input Sensor Service Check, 2-20

4026-0XX

Hot Fuser Service Check

Note: If you replace the fuser assembly for overheating, also replace the engine board.

CAUTION: FUSER PARTS MAY BE HOT.

	FRU	Action
1	Fuser Assem-	Check for melted or damaged hot roll bearings,
	bly	drive gear, paper separators, thermistor, hot roll,
		backup roll or frame parts. If the fuser assembly
		shows evidence of overheating or thermal dam-
		age, repair as necessary.
		Note: If the lower fuser frame is damaged,
		replace the complete assembly.
2	Engine Board	Replace the engine board if the fuser continues
		to operate erratic or overheats.

Input Sensor Service Check

If the paper never leaves the tray or fails to be picked from the tray, go to the “Paper Feed Service Check” on page 2-34 .

	FRU	Action
1	Paper	Check the paper for rough edges, creases,
		tears, or folds.
		Be sure the paper leaves the paper tray as soon
		as it is picked by the D-Roll. If it does not, go to
		the “Paper Feed Service Check” on page 2-34 .
2	Envelopes (if	Be sure no more than 10 envelopes are stacked
	being used)	in the input paper tray. They may not pick or may
		jam at the input sensor or paper separator.
		Note: Coated papers, synthetic papers, multi-sheet
		forms, thermal papers, envelopes with windows,
		holes, cutouts, perforations, string-ties, metal
		fasteners, exposed flap adhesive, excessive curl, bent
		corners and some labels cause problems.

2-20