Vertical colored lines or banding check
 
Leading edge
 
Diagnostics and troubleshooting
 
53
 
Step 1 
a
 
Enter the Diagnostics menu, and then navigate to: 
Advanced Print Quality Samples 
> 
Advanced Print Quality 
Samples
 
b
 
Check the test page.
 
Is only one color producing the defect?
 
Step 2
 
•
If the affected color is cyan, magenta, or yellow, then replace
the developer unit of the affected  color.
•
If the affected color is black, then replace the imaging unit.
Does the problem remain?
 
Step 3
 
Replace the photoconductor unit.
 
Does the problem remain?
 
Step 4
 
Replace the transfer module. See 
“Transfer module removal” on 
page 371
.
 
Does the problem remain?
 
Step 5
 
Replace the fuser. See 
“Fuser removal” on page 370
.
 
Does the problem remain?
 
Contact the next 
level of support.