Scratches In The Transparency Parallel To The Long Axis Of Printing; White Portion Of Print Is Colored; Color Is Uneven; Not Printing - Tektronix Phaser 360 Service Manual

Scratches in the transparency parallel to the long axis of printing

1.
Usually caused by foreign debris in the paper path. Run a
transparency through the manual feed to see if the scratch appears on
the print. If it does not, the scratch occurred in the paper pick and
early transport of the transparency film.
2. A scratch caused by the paper preheater can be caused by debris built
up on the heating surfaces. Run the front panel clean procedure
Clean: Ink smears. Additional, you can manually force a sheet of
thick 65 to 80# paper through the paper preheater to "buff" the paper
preheater heating surfaces. With the leading and trailing ends of the
sheet of paper extending from the entry and exit of paper preheater,
gently pull the sheet of paper back and forth several times and then
remove the sheet of paper. Be careful of the paper sensor flags.

White portion of print is colored

1. Color on a print where no color should be printed is often called a
latent image. A latent image remains on the drum when it should
have been transferred to its sheet of paper. An insufficient amount of
oil on the drum, provided by a dirty or defective or old maintenance
tray may be the problem. Clean the wiper blade and the wick of the
drum maintenance tray. If necessary, replace the maintenance tray.
2. Run diagnostics to ensure that printer temperatures are in tolerance.
3. Replace the power control board.
4.
Non-functioning printhead data cable. Replace the main board.
5. Replace the printhead.

Color is uneven

1. This may be due to poor thermal regulation in the printer, resulting in
uneven heating of the printhead, which in turn results in uneven ink
drop jetting.
2.
Clean the wiper blade and the wick of the drum maintenance tray.
3. Perform the procedure, "Adjustments" on page 9-6.
4. Replace the printhead; this is explained in the Chapter 8 topic,
"Printhead" on page 8-33.

Not printing

The printer processes a sheet of paper, but no image is printed on it.
1. No drive voltages to the printhead. Check for a loose connector
leading to the printhead.
Troubleshooting
Service Manual 6-15
6