Xerox Phaser 8400 Service Manual page 240

Step Questions and Actions
3
1. Using transparency media, print from Tray 1
to see if the scratch appears.
2. Is there a visible scratch?
NOTE: To determine where the scratch is
originating, place a small drop of water on
the scratch on the transparency. If the
scratch disappears, the scratch is on that
side.
If the scratch does not disappear, follow
these steps on the other side. This can
help to determine where the problem is
originating.
4 1. If there is no visible scratch on the
transparency the defect occurred during
paper pick or early transport from Tray 2, 3,
or 4.
2. Change the paper pick guide, front door, or
maintenance kit.
3. Did this correct the problem?
5
A scratch or smear can be caused by debris
build-up on the paper preheater's heating
surface. Try the following:
1. Run the cleaning procedure
Smears
2. Did this correct the problem?
6 1. Force a sheet of thick 65- to 80-lb. paper
through the paper preheater to "buff" the
paper preheater heating surfaces.
2. With the leading and trailing ends of the
sheet of paper extending from the entry and
exit of the paper preheater, gently pull the
sheet of paper back and forth several times
and then remove the paper. Be careful of the
paper-sensor flags.
3. Did this correct the problem?
7 1. Inspect all paper guides inside the printer for
nicks, cuts, or debris.
5-14
from the printer's Control Panel.
Go to Step 5.
Complete.
Complete.
Remove Print
Complete.
Clean or replace any defective
paper guide(s).
Phaser 8400/8500/8550 Color Printer
Yes No
Go to Step 4.
Go to Step 5.
Go to Step 6.
Go to Step 7.