Tektronix Phaser 750 User Manual page 51

Solution:
1.
The choice of media; check the following:
a.
Use Tektronix media.
b.
Use the correct media tray for the media you are using.
c.
When using the Multi-Purpose Tray, select the correct media
in the front panel.
2.
Run Clean for Smudges. Press Help, scroll to Print Quality. Press
Menu, scroll to Clean for Smudges. Press Ok and press Confirm.
3. Print about 25 blank pages until the problem disappears.
4.
Replace Imaging Unit, or Fuser, or Fuser Roll.
User Guide
51