Rap 7.35 Blank Prints - Xerox DocuPrint N24 Service Manual

RAP 7.35 Blank Prints

1 Remove the EP Cartridge. Inspect the Laser Window for a sheet of paper that may have lodged
in front of it and could be blocking the laser beam from reaching the Drum. The Laser Window is
free of paper.
Y N
|
Remove the paper.
2 Generate a Printer Engine Controller Test Print (5.4.4). The problem is still present.
Y N
|
Troubleshoot or replace the System Controller PWB (REP 4.10.7) or reload the Host Driver
Software.
3 Install a new EP Cartridge (PL 7.2). The problem is still present.
Y N
|
Problem solved.
4 Replace the Laser Assembly (REP 4.6.1). The problem is still present.
Y N
|
Problem solved.
5 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 completely developed; with sharp, black, easily read areas.
Y N
|
Replace the HVPS Assembly (REP 4.10.4).
6 Carefully remove the Test Print generated in step 5. Inspect the print. The toner image on the
drum transferred completely to the paper. And the grid lines are black and unbroken.
Y N
|
Replace the BTR Assembly (REP 4.5.2). If the problem persists, replace the HVPS
Assembly (REP 4.10.4), Printer Engine Controller PWB (REP 4.10.6). Check the EP
Cartridge Connector and Contact Springs (PL 7.2).
7 Problem Solved.
Repair Analysis Procedures (RAP)
PROBLEM
The entire print is blank.
2/2000
7-56 DocuPrint N24, N32, N40, N3225, and N4025