Lcd No Display Or Display Abnormal - NEC Barracuda Service Manual

8.2 LCD No Display Or Display Abnormal

Symptom:
The LCD shows nothing or abnormal picture.
LCD No Display LCD No Display
Try another known good LCD
Module & Memory Board.
Yes
Display
OK?
No
Remove all external I/O device
(SD Card,Cradle Device...) from
MB except LCD.
Yes
Display
OK?
No
Barracuda PDA Maintenance
END
1. Replace faulty part.
2. Connect the I/O device to the
M/B one at a time to find out
which part is causing the problem.
Troubleshooting
Reset System then Power on.Plug
debug board and re-flash image
Replace
again.
Motherboard
Check system clock and
reset circuit.
To be continued & checking
System Clock and reset
Board-level
System
Check if any cold
Yes
Display
solder might cause
Ok?
this problem.
No
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