Lexmark Optra E Service Manual - Page 42

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