MUTOH ValueJet 1304 Service Manual page 369

VJ-1304 Maintenance Manual
Table 9-7 Symptoms, Check Items and Actions for Initial Operation Problems (Continued)
No. Symptom
2 Abnormal LCD
operation (no
displays/garbled
characters)
CS9050, CS9150
Check item
1. 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?
2. Panel cable may be
damaged.
3. Is operation panel
unit assembly LCD
damaged?
4. Main board assembly
may be damaged.
5. Power board
assembly may be
damaged.
9-31
Action
Reconnect following
connectors.
• Main board: J5
• Operation panel unit
assembly
Replace panel cable.
Replace panel board
assembly.
Replace main board
assembly.
Replace power board
assembly.
9 Troubleshooting
Reference
"4.3.3
Replacing
Main Board
Assembly"
p.4-26
"4.2.2
Removing
Operation
Panel Unit"
p.4-9
"4.2.2
Removing
Operation
Panel Unit"
p.4-9
"4.3.3
Replacing
Main Board
Assembly"
p.4-26
"4.3.6
Replacing
Power Board
Assembly"
p.4-31
Rev.-01