Rap 7.37 Vertical Band Deletions - Xerox DocuPrint N24 Service Manual

RAP 7.37 Vertical Band Deletions

1 Remove the EP Cartridge. Inspect the Laser Window for a scrap of paper or other contamination
that may have lodged in front of it and could be blocking part of the laser beam from reaching the
Drum. The Laser Window free of paper or other contamination.
Y N
|
Remove the paper scrap or clean the Laser window.
2 Inspect the paper loaded into the trays. The paper is smooth (not wrinkled) and undamaged.
Y N
|
Load fresh, dry paper.
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 band deletions.
Y N
|
Look for something blocking the Laser beam or replace the Laser Assembly (REP 4.6.1).
5 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. The image on the paper is normal before it enters the Fuser (no vertical
band deletions).
Y N
|
Replace the BTR assembly (REP 4.5.2).
Repair Analysis Procedures (RAP)
PROBLEM
There are areas of the image that are extremely light or missing entirely.
These missing areas form wide bands that run vertically along the page, in
the direction of paper travel.
2/2000
7-58 DocuPrint N24, N32, N40, N3225, and N4025