Streaks Or Lines Down The Print - Xerox Phaser 8400 Service Manual

Streaks or Lines Down the Print

Step Question and Actions
1 Check for media in the exit path.
2 Clean the Wiper Blade of the Maintenance Kit. Inspect the operation of the
Maintenance Kit. If necessary, replace the Maintenance Kit.
3 Inspect the printer for anything touching the drum. For example, check the exit area,
under the exit frame, the preheater, the Maintenance Kit and the printhead, including
the Paper Release Blade. If necessary, clean the Paper Release Blade.
4 If streaks are on the front side of a 2-sided print, the paper Preheater may be scraping
ink off the print. Look for ink shaving alongside the streak. Clean the Preheater using
the front panel initiated cleaning process
5 Possible missing, weak, or contaminated jet. Print the Service Test Print 1: Weak/
Missing Jet to determine if a jet is not performing. See the following procedure
"Missing Ink or Light Colored Ink Band Running Length of Print" on page 5-17.
6 The X-axis Drive is not functioning correctly. If the X-axis Drive does not move the
printhead smoothly and evenly during printing, vertical lines appear in the print. Print
Service Test Print 13-19: Solid Fills to reveal an X-axis problem. Ensure that no wiring
harnesses are interfering with the horizontal movement of the printhead. If indicated,
replace the X-axis Drive.
7 Smears on a duplex print can also be caused by the paper Preheater operating at a
too high temperature. Use the diagnostics to check the paper Preheater's temperature.
Replace, if necessary.
8 Replace the Electronics Module.
Print-Quality Troubleshooting
There are several possible causes of
streaks running down the length of a print.
0388-41
Remove Print Smears.
5-19