Offsetting And Residual Image Isolation Rap - Xerox 3001 Service Manual

CQ 28 Offsetting and Residual lmage
Isolation RAP
This RAP is used t o isolate between an
offsetting and residual image copy quality
problem. It may be necessary t o make
several copies t o see if the problem can be
repeated.
Ask the customer for the document that
is causing the problem.
Select a sheet of media, and draw a short
line 4 114 inches (1 08 mm) from the lead
edge and parallel t o that edge.
Put the number
0
by one end of the line
drawn in step 2. Use this prepared sheet
as the media for the next copy.
Select the normal contrast mode (middle
LED lit).
Insert the lead edge of the prepared
media with the marked side facing
down.
Start t o make a copy, then press STOP
when the line marked on the copy media
is even with the outside edge of the
latching cover.
The mark will move about 112 inch
Q (1.27cm) beyond the front cover
before the main drive stops.
7. Open the transport latching cover and
remove the partially made copy. Ensure
that the copy is not dragged against the
photoreceptor or fuser roll.
8. Examine the new copy 10 318 inches
(264mm) (circumference
of
the drum) away
from the lead edge.
Q
Locate the exact end o f the fused area
o f the image by wiping the image
with a finger.
9. If there is a reprint of the lead edge
information in the unfused area of the
image, then the problem is residual
image. This is caused by either a cleaning
problem, a dirty cleaning blade, or an
incorrect electrostatic value. Go t o the
CQ-15 Residual lmage RAP.
10. Examine the images within the unfused
area. If the reprint i s not in the unfused
area, then remove the oil dispense
assembly and check the fuser roll for a
toner image. If there is a toner image on
the roll, then go t o the CQ-13 Offsetting
RAP.
Q
If you need to repeat this procedure,
remove toner from the fuser roll by
making a blank copy in between
attempts and discard the copy.
J
LEAD EDGE
4 114 INCHES
(1
08 mm)
THE PREPARED MEDIA
LEAD EDGE
IMAGE
\
I
EXAMINE
I
I
THIS AREA
FUSED
AREA
UNFUSED
AREA
A CHECK FOR RESIDUAL IMAGES
1 2/98
3001 3-71
CQ 28
Offsetting1 Residual Image Isolation RAP