Rap 7.40 Horizontal Streaks - Xerox DocuPrint N24 Service Manual

RAP 7.40 Horizontal Streaks

1 Install a new EP Cartridge (PL 7.2). The problem is still present.
Y N
|
Problem solved.
2 Remove the Upper Rear Cover (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. The image on
the drum is completely white; without any horizontal streaks visible.
Y N
|
Replace the Laser Assembly (REP 4.6.1).
3 Inspect the System Controller Test Print you generated in step 2 after transfer. The paper is blank
(no horizontal streaks are visible).
Y N
|
Replace the BTR Assembly (REP 4.5.2).
4 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 after the image
exits the Fuser. The paper is blank (no horizontal streaks are visible).
Y N
|
Replace the Fuser Assembly (REP 4.7.1).
5 Replace the System Controller PWB (REP 4.10.7). The problem is still present.
Y N
|
Problem solved.
6 Replace the HVPS Assembly (REP 4.10.4). The problem is still present.
Y N
|
Problem solved.
7 Replace each component listed below, one at a time, until the problem disappears.
Printer Engine Controller PWB (REP 4.10.6)
EP Cartridge Connector and Contact Springs (PL 7.2)
Repair Analysis Procedures (RAP)
PROBLEM
There are black lines running perpendicular to paper travel.
2/2000
7-62 DocuPrint N24, N32, N40, N3225, and N4025