Print-Quality Troubleshooting 5-21
5
CAUTION: Do not clean the Developer 
Assembly rollers with a 
cloth. Carefully remove 
debris from the rollers using 
tweezers or similar tool.
Remove the Developer Frame 
Assembly (
page 8-78). Using a lint free 
cloth, carefully clean the Laser window 
and between each Developer 
Assembly.
Does the image quality improve?
Complete Go to Step 6.
6
Replace the Developer Frame 
Assembly (
page 8-78).
Does the image quality improve?
Complete Go to Step 7.
7
Replace the Laser Unit (page 8-76). 
Does the image quality improve?
Complete Replace the Engine 
Control Board
 
(page 8-104).
Troubleshooting Procedure Table (Continued)
Step Actions and Questions Yes No