Lexmark W812 - Background Service Check

2-28 Service Manual
4022-XXX
Background Service Check
There is a light gray dusting of toner on all or most of the printed page.
THE PRINTER DISPLAYS NO ERROR CODE.
3 IMAGE TRANSFER INSPECTION
Generate a Black Test Print and switch off printer power
halfway through the print cycle.
Open the Top Cover and remove the Toner Cartridge.
Open the Drum Shutter.
Hand rotate (counterclockwise) the Drum 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 toner image on the drum normal
and without spot deletions, but there are spot deletions on
the paper after Transfer?
Replace the
Transfer
Roller. Go to
“Transfer
Roller
Removal” on
page 4-38.
Go to step 4
4 FUSER INSPECTION
Generate another Black Test Print and switch off printer power
when the print is halfway through the Fuser.
Open the Top Cover and remove the Toner Cartridge.
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. Go
to “HVPS
Cover
Removal” on
page 4-14.
Replace the
paper with
fresh, dry
paper and
thoroughly
clean the
inside of the
printer
Step Actions and Questions Yes No
1 TONER CARTRIDGE REPLACEMENT
Install a new Toner Cartridge.
Is the background gone?
Problem
solved
Go to step 2
2 IMAGE DEVELOPMENT INSPECTION
Generate a Test Print and switch off printer power halfway
through the print cycle.
Open the Top Cover and remove the Toner Cartridge.
Open the Drum Shutter.
Hand rotate (counterclockwise) the Drum 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. Go
to “Printhead
Assembly
Removal” on
page 4-32.
Step Actions and Questions Yes No