Rap 7.39 Vertical Streaks - Xerox DocuPrint N24 Service Manual

RAP 7.39 Vertical Streaks

1 Inspect the paper path, between feed and exit, for contamination or obstructions. The paper path
is free of contamination and obstructions.
Y N
|
Remove contamination and obstructions from the paper path.
2 Remove the EP Cartridge. Inspect the Laser Window for contamination that could be blocking
part of the laser beam from reach the Drum. The Laser Window is clean.
Y N
|
Clean Laser window.
3 Install a new EP Cartridge (PL 7.2). The problem is still present.
Y N
|
Problem solved.
4 Remove the Upper Rear Cover Assembly (REP 4.1.3). Generate a System Controller Test Print
(5.5.2.2.2) for Version 1.7X and below, (5.6.2.2.2) for Version 1.8X, or (5.7.2.12.2) for Version 2.0
and switch OFF printer power halfway through the print cycle. Open the Left Upper Cover. Open
the Drum Shutter. Hand rotate (counterclockwise) the Main Drive Motor to advance the Drum far
enough so you can see the developed image area on the Drum before it reached Transfer.
Before Transfer, the toner image on the drum was normal and without vertical streaks, but there
are vertical streaks on the paper after Transfer.
Y N
|
Go to step 6.
5 Replace the BTR Assembly (REP 4.5.2).
6 Generate another System Controller Test Print and switch OFF printer power when the print is
halfway through the Fuser. Open the Left Upper Cover. Examine the paper areas before the
image enters the Fuser and after the image exits the Fuser. The image on the paper normal
before it enters the Fuser, but there are vertical streaks visible when it exits the Fuser.
Y N
|
Inspect the paper path, between feed and exit, for contamination or obstructions.
7 Replace the Fuser Assembly (REP 4.7.1).
DocuPrint N24, N32, N40, N3225, and N4025
PROBLEM
There are black lines running in the direction of paper travel.
2/2000
7-61 Repair Analysis Procedures (RAP)