Media Jams And The Paper Path - Tektronix Phaser 600 Service Manual

6
Troubleshooting

Media jams and the paper path

6-8 Phaser 600 Color Printer
Required tools
Phillips #1 screwdriver
VOM
Jams fall into the following four categories:
Media-based problems
Paper-loading errors
Paper-feeding errors
Paper-ejecting errors
Media-based problems
1.
Check that the correct type of media is being used.
2. Inspect the paper for bent, torn or folded corners as well as damaged
or skewed edges. Ensure the leading edge of the roll is squarely cut
and is not damaged. Check the ends of the roll for dents.
3.
Ensure that the correct media is correctly loaded on the supply roller.
4. Ensure the correct weight and stiffness of paper is being used.
Paper-load errors - entrance jams
Paper-load errors occur when the media is improperly clamped. An entrance
jam is declared if the media input sensor cannot detect the leading edge of the
media. A load error is also declared if the skew sensors detect the leading edge
is skewed more than 5 mm (0.2 in.) from parallel with the X-axis.
1.
Ensure that the media fits properly on the supply roller. Ensure the
leading edge is squarely cut and aligns with the edge guide mark on
the printer.
2. Clean the upper feed rollers. Paper dust can coat the pick roller and
affect its ability to grip the paper and pull it into the printer.
3.
Check that the drum is being rotated. If it is not, go to the topic,
"Testing for a shorted motor" on page 6-6. Otherwise, go to Step 4.
4. Refer to the later topic, "PC-based diagnostics" on page 6-26. Use the
motor and solenoid test to check the operation of the paper load
system.