Xerox 7142 Service Manual

9 Troubleshooting RJ-901C/RJ-900C Maintenance Manual
9-52
7 Machine outputs all
black printing.
1. Check connection of
head cable connectors
on CR board assembly
side and print head
side.
• Is head cable inserted
obliquely?
• Is it locked securely?
Reconnect head cable. "4.6.1
Replacing
Print Head"
p.4-37
"4.10.1
Replacing CR
Board
Assembly"
p.4-64
2. Is CR cable inserted
obliquely?
Reconnect main board
assembly connectors J110 -
J114 and CR board assembly
connectors J201 - J205.
"4.3.3
Replacing
Main Board
Assembly"
p.4-21
"4.10.1
Replacing CR
Board
Assembly"
p.4-64
3. CR cable assembly
may be damaged.
Replace CR cable assembly. "4.10.3
Replacing CR
Tape Wire"
p.4-68
4. Is print head damaged? Replace damaged print head
assembly.
"4.6.1
Replacing
Print Head"
p.4-37
5. CR board assembly
may be
malfunctioning.
Replace CR board assembly. "4.10.1
Replacing CR
Board
Assembly"
p.4-64
6. Main board assembly
may be damaged.
Replace main board
assembly.
"4.3.3
Replacing
Main Board
Assembly"
p.4-21
8
9
10
11
Blocky printing
quality.
Blocky image printing.
CR line seems dotted.
White or black lines
appear. (No missing or
ink crooking in step
patters in location 1G -
7G in "Test Print")
1. Is working
environment
appropriate?
Use machine under specified
environment.
"3.5
Choosing a
Place for the
Plotter" p.3-10
Table 9-11 Symptoms, Check Items and Actions for Printing Problems(Continued)
No. Symptom Check item Action Reference

Xerox 7142 Specifications

General

Brand	Xerox
Model	7142
Category	Printer
Language	English