Diagnostic Information 2-19
4022-XXX
3 IMAGE DEVELOPMENT INSPECTION
Remove the Left Cover.
Generate a Test Print and switch off printer power halfway
through the print cycle.
Open the Top 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 developed; with
sharp, black, easily read areas?
Go to step 4 Replace the
HVPS. Go to
“HVPS
Removal” on
page 4-13.
4 IMAGE TRANSFER INSPECTION
Carefully remove the Test Print generated in step 3.
Inspect the print.
Was the toner image on the drum transferred completely
to the paper?
Go to step 5 Replace the
Transfer
Roller. Go to
“Transfer
Roller
Removal” on
page 4-38. If
the problem
persists,
replace the
HVPS. Go to
“HVPS
Removal” on
page 4-13.
5 FUSER INSPECTION
Generate another Test Print and switch off printer power when
the print is halfway through the Fuser.
Open the Top Cover.
Examine the paper areas before the image enters the Fuser
and after the image exits the Fuser.
Is the image normal before it enters the Fuser, but light
when it exits the Fuser?
Replace the
Fuser
Assembly. Go
to “HVPS
Cover
Removal” on
page 4-14.
Go to step 6
6 The following printer FRUs and areas are associated with this
specific problem. One or more of these FRUs or areas may
have failed partially or completely. If you cannot isolate this
problem using the steps in this service check, replace each
FRU or troubleshoot each area listed below until you isolate
and solve the problem.
• Printhead Assembly - Go to “Printhead Assembly
Removal” on page 4-32.
• Engine Card - Go to “Engine Card Removal” on page 4-10.
Step Actions and Questions Yes No
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