4026-0XX
2-20
Hot Fuser Service Check
Note: If you replace the fuser assembly for overheating, also
replace the engine board.
CAUTION: FUSER PARTS MAY BE HOT.
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
Fuser Assem-
bly
Check for melted or damaged hot roll bearings,
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.
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
being used)
Be sure no more than 10 envelopes are stacked
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.
