Horizontal Streaks - Xerox 4400DT - Phaser B/W Laser Printer Service Manual

Vertical Streaks Troubleshooting Procedure (cont'd.)
Step Actions and Questions
6 Warning:
1. Open the Rear Cover and remove the Fuser
Assembly.
2. Rotate the fuser idler gear manually and inspect the
Heat Roller.
3. Open the fuser jam access cover.
4. Rotate the fuser idler gear manually and inspect the
Pressure Roller.
Are the Heat Roller and the Pressure Roller free
of surface defects and contamination?

Horizontal Streaks

There are black lines running horizontally across the page in the scan direction (at a
right angle to the direction of paper travel).
Initial Actions
Check that the paper supply is dry and fresh.
I
Inspect the printer paper path for items such as staples, paper clips and paper
I
scraps.
Check installation of the Print Cartridge.
I
Check that the Print Cartridge ground contacts (on the right side of the Print
I
Cartridge and in the Print Cartridge Side Guide in the printer) are clean.
Phaser 4400 Laser Printer Service Manual
If the printer has been switched on,
the Fuser will be hot.
Yes No
Go to Replace the
Electrical Fuser
Noise on Assembly
page 3-33 (RRP 6.2 on
page 6-66).
3-65