Xerox 7142 Service Manual - page 282

9 Troubleshooting

RJ-901C/RJ-900C 　 Maintenance Manual

9-38

6

9.  Is head cable 

broken?

Replace head cable.

"4.6.1 

Replacing 

Print Head" 

p.4-37

"4.10.1 

Replacing 

CR Board 

Assembly" 

p.4-64

10. Is print head 

assembly damaged?

Replace print head 

assembly.

"4.6.1 

Replacing 

Print Head" 

p.4-37

11.  Is CR board 

assembly damaged?

Replace CR board 

assembly.

"4.10.1 

Replacing 

CR Board 

Assembly" 

p.4-64

12. Check connection of 

CR cable connectors 

on CR board 

assembly side and 

main board assembly 

side. 

•

Is head cable inserted 

obliquely?

•

Is it locked securely?

Reconnect following 

connectors.

•

CR board assembly 

connector: J201 - J205

•

Main board assembly 

connector: J110 - J114

"4.10.1 

Replacing 

CR Board 

Assembly" 

p.4-64

"4.3.3 

Replacing 

Main Board 

Assembly" 

p.4-21

13.  Is CR cable broken?

Replace CR cable.

"4.10.3 

Replacing 

CR Tape 

Wire" p.4-68

14. Main board assembly 

may be defective.

Replace main board 

assembly.

"4.3.3 

Replacing 

Main Board 

Assembly" 

p.4-21

Table 9-9  Symptoms, Check Items and Actions for Initial Operation Problems (Continued)

No.

Symptom

Check item

Action

Reference