Tektronix 560 user manual Fuser is worn out

Troubleshooting 7

Troubleshooting and print quality quick reference (cont'd.)

Symptom	Possible Causes	Solution
Front panel reports:	The Fuser is wearing out.	Replace the Fuser soon.
Fuser:replace

Front panel reports: The Fuser is worn out.

Fuser expired

Replace the Fuser now; although it continues to function, the print quality is affected.

A piece of the printed image	The Fuser’s internal roller is not being	■ Print 5-10 pages of blank pages to clean
is missing and reappears out	consistently oiled.	the roller.
of place, approximately	or	If you still see the problem:
129 mm (5 in.) down the		■ Replace the Fuser Roll.
page.	The Fuser’s internal roller is
		If you still see the problem:
	contaminated with toner particles.	■ Replace the Fuser.
The surface of the printed	The Fuser is wearing out.	Replace the Fuser (depending on your
image appears to have		quality needs, you can continue to print
vertical scratches (visible by		until the dark vertical lines appear).
holding the print at an angle
and observing the “shine” of
the image).
At first, the scratches appear
only on the printed image;
eventually, dark vertical
scratches appear on the
unprinted portion of the page.
A piece of the printed image	The Fuser’s internal roller is not being	■ Print 5-10 pages of blank pages to clean
is missing and reappears out	consistently oiled.	the roller.
of place, approximately	or	If you still see the problem:
129 mm (5 in.) down on the		■ Replace the Fuser Roll.
page.	The Fuser’s internal roller is
		If you still see the problem:
	contaminated with toner particles.	■ Replace the Fuser.
Media frequently wraps	The Fuser Roll is worn out.	■ Replace the Fuser Roll.
around the Fuser.

Light vertical streaks appear The Main Charge Grid is dirty. in all colors (most easily

visible in yellow).

Replace the Main Charge Grid. Complete instructions are packaged with the Main Charge Grid. Refer to “Supplies and accessories” on page 9-2 for ordering information.

User Manual 7-13