Printing And Print Quality Problems; Streaks Or Lines Across The Print; Streaks Or Lines Down The Print - Tektronix Phaser 360 Service Manual

6
Troubleshooting

Printing and print quality problems

6-14 Phaser 360 Color Printer
Generally, print problems fall into the following five categories:
Streaks or lines in the prints
No printing
Printing too light or too dark
Image is offset or cut off
Wrinkling

Streaks or lines across the print

1. Check the y-axis belt tension. If the y-axis drive is not smoothly and
consistently rotating the drum, horizontal bands or lines appear in the
print.
2. Replace the Y-axis motor.
3. Replace the power control board.

Streaks or lines down the print

1.
Clean the blade and the wick of the drum maintenance tray.
2. Possible missing weak jet. Print the Service Test Print 2 "Weak Jet" to
determine if a jet is not performing. Perform a printhead cleaning
cycle to try to clean a clogged jet.
3. Scroll to the hidden service menu item Service Support - Head
Adjust. Raise the head voltage value displayed to between 160 and
180. Never raise the voltage setting above 200. Set the head voltage value
to the minimum setting that assures proper print quality.
4. If necessary, turn off the printer and allow the printhead to cool for 6
hours.
5. Ensure that no wiring harness are interfering with the horizontal
slewing of the printhead. In such a case, the streaks or lines should be
parallel and evenly spaced.
6. The x-axis drive is not functioning correctly. If the x-axis drive does
not slew the printhead smoothly and evenly during printing, vertical
lines appear in the print. Print Service Test Print 1 "X-axis" to reveal
an x-axis problem. Replace the x-axis drive, if indicated.
7.
Replace the x-axis drive assembly.
8. Replace the power control board.