Rap 7.36 Black Prints - Xerox DocuPrint N24 Service Manual

RAP 7.36 Black Prints

1 Generate a Printer Engine Controller Test Print (5.4.4). The problem is still present.
Y N
|
Replace the System Controller PWB (REP 4.10.7) or reload the Host Software
2 Install a new EP Cartridge (PL 7.2). The problem is still present.
Y N
|
Problem solved
3 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. The
image on the drum is completely developed; with sharp, black, easily read areas and clear, white
areas.
Y N
|
Go to step 5.
4 Replace the BTR Assembly (REP 4.5.2).
5 Replace the System Controller PWB (REP 4.10.7). Generate a System Controller Test Print. The
problem is still present.
Y N
|
Problem solved.
6 Replace the Printer Engine Controller PWB (REP 4.10.6). Generate a System Controller Test
Print. The problem is still present.
Y N
|
Problem solved.
7 Replace the Laser Assembly (REP 4.6.1). Generate a System Controller Test Print. The problem
is still present.
Y N
|
Problem solved.
8 Replace the LVPS (REP 4.10.2). If the problem is still present, refer to the wiring diagrams
Section (6) and check for a broken wire or loose connection between components in the
Xerographic sections of the printer.
DocuPrint N24, N32, N40, N3225, and N4025
PROBLEM
The entire print is black.
2/2000
7-57 Repair Analysis Procedures (RAP)