Xerox Phaser 8500, Service Manual

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4-70 Phaser 8400/8500/8550/8560 Color Printer Service Manual
General Troubleshooting
9. Inspect the gears and mating cam gears for stripped or damaged gear
teeth.
10. Replace the Process Drive Gearbox.
11. Replace the media path drive gearbox.
Media Skews Passing Through the Paper Path
1. Ensure the media is supported.
2. Ensure that the side guides are properly adjusted.
3. Do not overfill the tray, especially with envelopes.
4. Check to see if the media is excessively curled. Curled media can get
mistracked in the paper path.
5. Examine the paper path; ensure it is clear of obstructions.
6. Ensure that the pick roller is not visibly dirty so that it picks up a sheet of
media smoothly and evenly.
7. Check and clean or replace, as required, the preheater and/or take away
rollers. Also make sure that the front door is properly closed.
8. The printer should be installed on a flat, level surface.
9. Ensure the paper preheater assembly is clean and properly seated into
the printer frame.