Table 1-90 Horizontal Streaks - Xerox DOCUPRINT N4525 Service Quick Reference Manual

RAP 1-66
Horizontal Streaks
Fig 1-21 Horizontal Streask
.

Table 1-90 Horizontal Streaks

Step Actions and Questions
LASER PRINT (EP) CARTRIDGE
1
REPLACEMENT
Install a new Laser Print (EP) Cartridge.
Are the horizontal streaks gone?
IMAGE DEVELOPMENT INSPECTION
2
1. Remove the Rear Cover (RRP 1-5).
2. Generate a Blank Test Print and switch OFF printer
power halfway through the print cycle.
3. Open the Left Upper Cover.
4. Open the Drum Shutter.
5. Hand rotate (counter clockwise) the Drum Drive Motor
flywheel to advance the Drum far enough so you can
see the developed image area on the Drum before it
reached Transfer.
Is the image on the drum completely white;
without any horizontal streaks visible?
3 IMAGE TRANSFER INSPECTION
Inspect the Blank Test Print you generated in step 2.
Are horizontal streaks visible on the paper
after Transfer?
PROBLEM
There are black lines running horizontally across the paper
perpendicular to the direction of paper movement.
THE PRINTER DISPLAYS NO ERROR CODE.
S4525-12
Volume 1 / Print Engine - Troubleshooting
Yes No
Problem Go to step 2
solved
Go to step 3 Replace the
Laser
Scanner
Assembly
(RRP 1-47)
Replace the Go to step 4
Bias Transfer
Roller
Assembly
1-125