2-70 Service Manual
4025-XXX
Background
There is a light gray dusting of toner on all or most of the printed page.
THE PRINTER DISPLAYS NO ERROR CODE.
4 FUSER INSPECTION
Generate another Black Test Print and switch OFF printer
power when the print is halfway through the Fuser.
Open the Left Upper Cover.
Examine the paper areas before the image enters the Fuser
and after the image exits the Fuser.
Is the image on the paper normal before it enters the
Fuser, but there are spot deletions visible when it exits the
Fuser?
Replace the
“Fuser
Assembly”
on page 4-65
Replace the
paper with
fresh, dry
paper and
thoroughly
clean the
inside of the
printer.
Step Actions and Questions Yes No
1 EP CARTRIDGE REPLACEMENT
Install a new EP Cartridge.
Is the background gone?
Problem
solved
Go to step 2
2 IMAGE DEVELOPMENT INSPECTION
Remove the Rear Cover.
Generate a Test Print and switch OFF printer power halfway
through the print cycle.
Open the Left Upper Cover.
Open the Drum Shutter.
Hand rotate (counterclockwise) the Main Drive Motor to
advance the Drum far enough so you can see the developed
image area on the Drum before
it reached Transfer.
Is the image on the drum completely clean and without
any noticeable background toner?
Go to step 3 Replace the
“Printhead
Assembly”
on page 4-57
3 IMAGE TRANSFER INSPECTION
Remove the Rear Cover.
Generate a Test Print and switch OFF printer power halfway
through the print cycle.
Open the Left Upper Cover.
Open the Drum Shutter.
Hand rotate (counterclockwise) the Main Drive Motor to
advance the Drum far enough so you can see the developed
image area on the Drum before
it reached Transfer.
Before Transfer was the drum clean and without
noticeable background toner, but there was background
visible on the paper after Transfer?
Replace the
“BTR
Assembly”
on page 4-61
Go to step 4
Step Actions and Questions Yes No
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