Scan Direction Dark Streaks - Xerox Phaser 7400 Service Manual

Scan Direction Dark Streaks

There are dark lines running parallel with the leading edge of the print.
Troubleshooting Reference Table
Applicable Parts
Imaging Unit
Transfer Roller
Troubleshooting Procedure Table
Step Actions and Questions
1 Print the Color Test Pages.
Does the problem occur in one
primary color?
2 Perform the Remove Print Smears
routine from the printer's Control
Panel.
Did this fix the problem?
3 Inspect the Fuser rollers for
contamination.
Is the Fuser contaminated?
4 Print a test print
Did the test pattern print correctly?
Print-Quality Troubleshooting
Example Print
Process
Yes
Replace the Imaging
Unit of the defective
color.
Complete.
Replace the Fuser.
Replace the Image
Processor Board
(page 8-113).
s7400-335
No
Go to Step 2.
Go to Step 3.
Go to Step 4.
Replace Engine
Control Board
(page 8-112).
5-37