Xerox Phaser 4500, Service Manual

Page: 242 / 537

Print-Quality Troubleshooting 5-19
3 1. Install a new Print Cartridge.
2. Print a test print as in Step 1.
Is there a normal image on the
paper?
Problem solved. Go to step 4.
4 1. Remove the Print Cartridge.
2. Inspect the Metal Grounding
Contact on the Print Cartridge
Right Side Guide.
Is the Metal Grounding Contact
intact and free of contamination?
Go to step 5. Reform or clean the
Metal Grounding
Contact, so they make
better contact with the
drum shaft, or replace
the Print Cartridge
Right Guide
(page 8-58).
5 Check for continuity between the
Metal Grounding Contact and the
printer frame.
Is there continuity between the
Grounding Contact and the printer
frame? Go to step 6. Replace the Print
Cartridge Right Guide
(page 8-58).
6 Is the Transfer Roller intact and
free of contamination? Go to step 7. Replace the Transfer
Roller Assembly
(page 8-55).
7 1. Generate a test print as in Step 1
and switch the printer power OFF
halfway through the print cycle.
2. Carefully remove the Print
Cartridge and inspect the toner
image on the drum just before the
transfer area (Transfer Roller).
Is the image on the drum
completely developed with sharp,
black, easy-to-read areas?
Go to step 8. Go to “HVPS/Engine
Logic Board” on
page 4-35.
8 Replace in order until the problem is
solved:
■
HVPS/Engine Logic PWB
(page 8-89))
■
Laser Assembly (page 8-46)
■
Transfer Roller Assembly
(page 8-55)
■
LVPS PWB (page 8-78)
■
Print Cartridge Right Side Guide
(page 8-58)
Blank Prints Troubleshooting Procedure (Continued)
Step Actions and Questions Yes No