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Print-eject jams
1.
Inspect the paper eject sensor.
2.
Check to see if the upper eject roller drive belt does not rotate due to a
broken drive gear. In such a case, the upper roller will not rotate when
the lower roller rotates.
3.
Check that the exit roller rotates smoothly.
4.
Check the paper eject path for obstructions.
Checking the paper-feed and drive train
1.
Determine if the timing motors run. If they do not rotate, replace the
print engine.
2.
Inspect the gear train on the inside of the printer frame; look for
stripped gears or belts or broken teeth.
Media skews passing through the paper path
1.
Check to see if the media is excessively curled. Curled media can get
mistracked in the paper path.
2.
Examine the paper path. Is there an obstacle blocking the path?
3.
Check to see if the paper clamp bar operates correctly. Is it clean?
Paper or transparency film can slip in a dirty paper bar clamp. Refer
to the cleaning procedure in Chapter 7 "Cleaning and Maintenance."
4.
Ensure that the pick rollers are clean so that they pick up a sheet of
media evenly.
5.
Determine if the feed roller's pressure rotates smoothly against the
feed roller guide.
Transfer roll jam
1.
Ensure that the transfer roll is not installed incorrectly. It should feed
off the bottom of the supply roll (rear roll) and over the top of the
take-up roll (front roll).
2.
Clean the transfer roll sensors.
3.
Clean the platen roller with isopropyl alcohol. After cleaning, the
platen should be smooth and not sticky.
4.
Ensure that the gears which mesh with the take-up roll rotate
smoothly.
Troubleshooting
Service Manual
6-7
6
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Table of Contents
Troubleshooting
