LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 97 -
Troubleshooting Flow
Start
Check the pin and battery
Connect terminals of I/O
connector
Connection OK?
Change I/O connector
Is the TA voltage
4.6V?
Change TA
Is it charging
properly
After turning on Q400,
Q401?
END
Change the board
NO
Yes
NO
Yes
NO
Yes
Summary of Contents for TU550
Page 1: ...Date May 2007 Issue 1 0 Service Manual Model TU550 Service Manual TU550 Internal Use Only ...
Page 185: ...Note ...
Page 186: ...Note ...