Xerox 4400DT - Phaser B/W Laser Printer Service Manual page 157

Vertical Deletions Troubleshooting Procedure (cont'd.)
Step Actions and Questions
4 Inspect the paper path, between feed and exit, for
contamination or obstructions.
Is the paper path free of obstructions?
5 Inspect the Transfer Roller Assembly for contamination
and wear.
Is the Transfer Roller free of contamination and
wear?
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?
7 Replace in order until the problem is solved:
Transfer Roller Assembly (RRP 7.1 on
I
Laser Assembly (RRP 7.4 on
I
Fuser Assembly (RRP 6.2 on
I
Engine Logic Board (RRP 9.3 on
I
3-60
If the printer has been switched on,
the Fuser will be hot.
page
page
page 6-79)
6-82)
6-66)
page 6-89)
Phaser 4400 Laser Printer Service Manual
Yes No
Go to step 5. Remove
obstructions
or
contamination
from the
paper path.
Go to step 6. Replace the
Transfer
Roller
Assembly
(RRP 7.1 on
page
Go to step 7. Replace the
Fuser
Assembly
(RRP 6.2 on
page
6-79).
6-66).