Xerox 4400DT - Phaser B/W Laser Printer, Service Manual, Page: 177 / 503

3-80 Phaser 4400 Laser Printer Service Manual
Skewed Image Troubleshooting Procedure
Step Actions and
Questions
Yes No
1 Run 5 Test Prints, single
sided, from each paper
tray. If the printer has a
Duplex Unit, run five
duplexed prints from each
tray.
Does the skewed
image appear only on
duplexed prints?
■
Check the Fuser Assembly.
Check for worn parts or rolls.
Check for obstructions or
contamination. Clean or replace
as necessary.
■
Check all rolls and drives in the
Exit Assembly. Check for
obstructions or contamination.
Clean or replace as necessary.
■
Check the Duplex Unit. Check
for worn parts or rolls. Check for
obstructions or contamination.
Clean or replace as necessary.
■
Check the chute between the
Duplex Unit and the Registration
Rolls. Check for worn parts or
rolls. Check for obstructions or
contamination. Clean or replace
as necessary.
Go to step 2.
2
The skewed image
occurs on prints fed
from all trays.
■
Check the Registration Sensor.
Check actuation and for
obstructions or contamination.
Clean or replace as necessary.
■
Check the Registration Rolls.
Clean or replace if necessary.
■
Check the Transfer Roller
Roller and bearings. Clean or
replace if necessary.
■
Check the Print Cartridge.
Replace if necessary.
■
Check the Chute Transport
Assembly. Check for obstructions
or contamination. Clean or
replace as necessary.
Go to step 3.
3 The skewed image
occurs on prints fed
from the MPT Tray.
■
Check the MPT Feed Rolls.
Clean or replace if necessary.
■
Check the MPT Retard Pad.
Clean or replace if necessary.
■
Check the MPT Guide. Check
for obstructions or contamination.
Clean or replace as necessary.
■
Check the Registration Sensor.
Check actuation and for
obstructions or contamination.
Clean or replace as necessary.
Go to step 4.
4 The skewed image
occurs on prints fed
from Tray 1.
■
Check the Tray 1 Feed Rolls.
Clean or replace if necessary.
■
Check the Tray 1 Nudger Roller.
Clean or replace if necessary.
■
Check the Tray 1 Retard Roller.
Clean or replace if necessary.
Check the feed chute between
Tray 1 and the Registration Rolls.
Check for obstructions or
contamination. Clean as
necessary.
Go to step 5.