Xerox 7142 Service Manual page 306

9 Troubleshooting
Table 9-11 Symptoms, Check Items and Actions for Printing Problems(Continued)
No. Symptom
19
20 Poor accuracy of
segment length in
media feed direction
(sub scan direction)
Check item
4. If the media in
problem is roll media,
does scroller rotate
evenly?
5. Does pressure roller
rotate harder when
pressure arm is raised?
1. Is working
environment
appropriate?
2. Have you performed
distance correction
with media in use?
3. Is PF driving pulley
loose
4. Is PF belt tension
adjusted to
specification?
5. Does pressure roller
rotate harder when
pressure arm is raised?
6. Is rough surface of grid
roller partially worn
out?
7. Is grid roller rotation
heavy? Does rattling
occur when it rotates?
8. If the media in
problem is roll media,
does scroller rotate
evenly?
9-62
RJ-901C/RJ-900C Maintenance Manual
Action
• Adjust roll receiver
assembly position.
• Replace roll receiver
assembly.
If pressure roller collects
media dust on itself, wipe
dust away using a wet soft
cloth.
Use machine under specified
environment.
Perform distance correction.
Replace PF motor assembly.
Adjust PF speed reduction
belt tension.
If pressure roller collects
media dust on itself, wipe
dust away using a wet soft
cloth.
If grid roller is contaminated
with media dust, clean roller
with a nylon brush.
Adjust roll receiver assembly
position.
Replace roll receiver
assembly.
Change media to be used.
Reference
"4.2.8
Removing
Scroller
Receiver (L,
R)" p.4-14
Operation
Manual
"3.5
Choosing a
Place for the
Plotter" p.3-10
"5.5.9
Band Feed
Correction
Menu" p.5-41
"4.4.1
Replacing PF
Motor
Assembly"
p.4-26
"(2)
Confirming
Completion of
Installation to
Plotter" p.7-17
Operation
Manual
Operation
Manual
"4.2.8
Removing
Scroller
Receiver (L,
R)" p.4-14