Tektronix Phaser 540 Plus User Manual page 127

Troubleshooting and print quality quick reference (cont'd.)
Symptom
Large, uneven and repeating
streaks appear on the page.
Print Quality Test Page
Cyan
Magenta
Yellow
Black
Count
Image Unit 1505
Corona 487
Transfer Kit 484
Fuser 0
One vertical, dark and even
fine line appears on the print
through all colors.
Print Quality Test Page
Cyan
Magenta
Yellow
Black
Count
Image Unit 1505
Corona 487
Transfer Kit 484
Fuser 0
Front panel reports:
Fuser:replace
A piece of the printed image
is missing and reappears out
of place, approximately
100 mm (4 in.) down on the
page.
Possible Causes
An internal belt on the imaging unit is
slipping.
Either the imaging unit or the fuser is
scratched.
The fuser is worn out.
The fuser is worn out.
Troubleshooting
Solution
Replace the imaging unit.
Replace the imaging unit; make sure that
the old imaging unit is not exposed to light
for more than 45 seconds.
If a new imaging unit does not correct the
problem:
Put the old imaging unit back into the
printer.
Repack the new imaging unit.
Replace the fuser.
Replace the fuser.
Replace the fuser.
User Manual
6
6-13