Xerox 7142 Service Manual page 301

RJ-901C/RJ-900C Maintenance Manual
Table 9-11 Symptoms, Check Items and Actions for Printing Problems(Continued)
No. Symptom
12 Printout borders blur.
13 Many satellites
(unnecessary dots)
14 Shaggy plotout
15 Uneven lines (plotted
with stains)
Check item
1. Does purge correct
symptom?
2. Is media in use a
recommended one?
3. CR cable assembly
may be damaged.
4. Is print head damaged? Replace damaged print head.
5. CR board assembly
may be
malfunctioning.
6. Main board assembly
may be damaged.
1. Is working
environment
appropriate?
2. Is the ink level
remained sufficient?
3. Perform purge three
times consecutively.
4. Perform test printing.
5. Have you started
plottout immediately
after initial charge?
6. Is CR belt tension
adjusted to
specification?
9-57
Action
Perform purge twice
consecutively.
Set recommended media and
check printout again. With
non-authorized media, media
sensor may fail to detect
media correctly.
Replace CR cable assembly
wire.
Replace CR board assembly.
Replace main board
assembly.
Use machine under specified
environment.
Replace ink cartridge with
new one.
Plot out drawing again.
If nozzle check patterns are
plotted correctly, refer to step
(6)
Be sure to wait 6 hours or
more after initial ink charge.
Plotout before ink charge
stabilization will not provide
adequate plottting quality.
Adjust CR belt tension.
9 Troubleshooting
Reference
Operation
Manual
Operation
Manual
"4.10.3
Replacing CR
Tape Wire"
p.4-68
"4.6.1
Replacing
Print Head"
p.4-37
"4.10.1
Replacing CR
Board
Assembly"
p.4-64
"4.3.3
Replacing
Main Board
Assembly"
p.4-21
"3.5
Choosing a
Place for the
Plotter" p.3-10
Operation
Manual
Operation
Manual
Operation
Manual
"7.6 CR
Belt Tension
Adjustment"
p.7-25