Print quality residual image service check
Service tip: The primary cause of random marks is due to loose material moving around inside the printer and attaching
to the photoconductor unit, developer roll, or transfer belt.
Check Yes No
Step 1
Check the condition of the imaging unit using the customer menus
(administration menus):
a At the Ready prompt, press Menu.
b Select Supplies Menu, and press Select.
c Select Imaging Kit, and press Select.
Does the display indicate OK?
Go to step 2. Replace the imaging
unit or the
photoconductor unit.
See “Imaging unit (IU)
removal” on page
266.
Step 2
Measure the distance from the original image to the same point on the
residual image.
Is the distance 43.9 mm?
Replace the developer
corresponding to the
color of the image. See
“Developer unit
removal” on page
240.
Replace the imaging
unit or the
photoconductor unit.
See “Imaging unit (IU)
removal” on page
266.
Step 3
Is the distance between the original image and the residual image 94.2
mm?
Replace the
photoconductor. See
“Developer unit
removal” on
page 240l.
Go to step 4.
Step 4
Run the Menu Setting Page twice to clear any debris.
a Press Menu on the operator panel.
b Select Reports from the Admin Menu, and press Select
.
c Select Imaging Kit, and press Select
.
Is there still any toner contamination on the fuser assembly?
Replace the fuser. See
“Fuser assembly
removal” on page
257.
Contact your next level
of support.
7527
Diagnostic information
35
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