Xerox 7142 Service Manual page 278

9 Troubleshooting
Table 9-9 Symptoms, Check Items and Actions for Initial Operation Problems (Continued)
No. Symptom
2
Initial ink charge not
3
available
Check item
4. Check panel cable for
proper connection at
operation panel unit
assembly side and
main board assembly
side.
• Is the panel cable
inserted obliquely?
• Is the connector
securely locked?
5. Panel cable may be
damaged.
6. Is operation panel
unit assembly LCD
damaged?
7. Main board assembly
may be damaged.
1. Is "Sen: Cover open"
displayed on LCD
with front cover
closed?
9-34
RJ-901C/RJ-900C Maintenance Manual
Action
Reconnect following
connectors.
• Main board: J125
• Operation panel unit
assembly
Replace panel cable.
Replace panel board
assembly.
Replace main board
assembly.
• Check connection of
cover sensor assembly
connector.
• Replace cover sensor
assembly.
Reference
"4.3.3
Replacing
Main Board
Assembly"
p.4-21
"4.2.2
Removing
Operation
Panel Unit"
p.4-8
"4.2.2
Removing
Operation
Panel Unit"
p.4-8
"4.3.3
Replacing
Main Board
Assembly"
p.4-21
"4.8.3
Replacing
Cover Sensor
Assembly"
p.4-60