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LGE Internal Use Only
START
Connect to your PC
Check the
soldering of SIM
L/T
Yes
Check TP1. Can
you see the level
of 2.85V?
of 2 85V?
Yes
Check TP2(SIM I
/O) . Is it looks li
ke fig4.2?
Yes
Check TP3. Can y
ou see the Clock si
gnal(fig.4.1)?
Yes
Check TP4. Is it hi
g
gh level?
Yes
Replace main PCB
- 40 -
4. TROUBLE SHOOTING
4. TROUBLE SHOOTING
Resolder U600
No
(SIM L/T)
No
Resolder U600
Resolder U600
No
No
Resolder U600
No
Resolder U600
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Table of Contents
Troubleshooting
