Xerox 6250DT - Phaser Color Laser Printer Service Manual page 202

Troubleshooting Procedure
Step Check
Replace the Laser Unit, page 8-68.
7
Does the image quality improve if the
Laser Unit is replaced?
Repalce the Sub-HVPS, page 8-87.
8
Does the image quality improve if the
Sub-HVPS is replaced?
Check J 5011 <=> J13 for continuity.
9
Print-Quality Troubleshooting
Yes
Complete
Complete
Replace the Engine
Control Board,
page 8-107
No
Go to Step 8.
Go to Step 9.
Replace the Front 1A ,
Harness Assembly
PL 13.1.7.
5-21