6-6
Phaser 440 Color Printer
6
Troubleshooting
5.
Check that the pick roller is being rotated. If it is not, go to the topic
“Checking the paper-feed and drive train” on page 6-7. Otherwise, go
to Step 5. In their starting position, the pick rollers' flat side should
face down.
6.
Clean the pick rollers. Paper dust can coat the pick roller and affect its
ability to grip the paper and pull it out of the tray.
7.
If the printer picks the paper but it stops feeding while the paper is in
the feed unit, check for media remaining in the paper path or a
defective sensor.
8.
Inspect the wiring harness leading to the feed module for nicks, cuts
or crimped wiring.
9.
Inspect the paper path for obstructions.
Paper-clamping errors
1.
Paper-clamping failures can be caused by faulty sensors, improper
media size, roller failure or poor media clamping. Also check for
foreign objects in the paper path.
2.
Ensure that the paper clamp bar operates correctly. The paper clamp
bar’s clamps should be opened when a clamp actuator roller rotates
and forces the clamps open.
3.
If the clamps are not opening correctly because the clamp actuator is
not rotating against the paper clamp bar, then replace the print engine.
4.
Clean the clamps with alcohol and a lint-free cloth to ensure that they
are fully gripping the sheet of paper.
5.
If clamping does not improve, inspect and clean the lenses of the
paper clamp sensor.
6.
If the paper reaches the paper clamps but fails to be clamped, replace
the print engine. Clean the feed roller to make sure it is pushing the
paper completely into the paper clamp.
7.
If clamping still does not improve, replace the print engine.
