Table 3-49Image defects table (continued)

Problem

Sample

Cause

Solution

Vertical white lines appear in a particular color.

The laser beam window is

Clean the window and remove any

dirty.

foreign substances.

Scratches are present on the circumference of the developing cylinder or photosensitive drum.

White scratch down the page could mean the scanner glass needs to be cleaned.

Remove the affected print cartridge and re-install. The PGCs will clean the glass.

If the problem persists, replace the affected print cartridge.

 

 

 

 

The laser/scanner-unit mirror

Replace the laser/scanner assembly.

 

 

 

 

is dirty.

 

 

 

 

 

 

Vertical white lines appear in all

 

 

Horizontal scratches on the

Replace the fuser.

 

colors.

 

 

fuser roller.

 

 

 

 

 

 

 

 

 

 

 

Scratches are present on the

Remove the affected print cartridge

 

 

 

 

 

 

 

circumference of the ITB.

and re-install. The PGCs will clean

 

 

 

 

White scratch down the page

the glass.

 

 

 

 

 

 

 

 

 

could mean the scanner glass

Replace the ITB.

 

 

 

 

 

 

 

needs to be cleaned.

 

 

 

 

 

 

 

Horizontal lines appear on the

 

 

 

Repetitive horizontal lines

Use the repetitive defects ruler to

 

 

page.

 

 

 

appear.

identify the dirty roller. Clean the

 

 

 

 

 

roller. If the roller cannot be

 

 

 

 

 

cleaned, replace the fuser.

 

 

 

 

 

 

 

 

 

 

Horizontal scratches are

Replace the print cartridge of the

 

 

 

 

present on the photosensitive

color that matches the defect.

 

 

 

 

drum.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Horizontal scratches are

Replace the fuser.

 

 

 

 

present on the fuser roller.

 

 

 

 

 

 

A horizontal white line appears

 

 

Repetitive horizontal white

Use the repetitive defects ruler to

 

on the page.

 

 

lines appear.

identify the dirty roller. Clean the

 

 

 

 

 

roller. If the roller cannot be

 

 

 

 

 

cleaned, replace the roller.

 

 

 

 

 

 

 

 

 

 

Horizontal scratches are

Replace the print cartridge of the

 

 

 

 

present on the photosensitive

color that matches the defect.

 

 

 

 

drum.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Scratches are present on the

Replace the ITB.

 

 

 

 

circumference of the ITB.

 

 

 

 

 

 

 

ENWW

Solve image quality problems 499