LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
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4.9 SIM Detect Troubleshooting
USIM Initial sequence of L704i is :
USIM_CLK,USIM_RST,USIM_DATA triggered
→
VREG_USIM_2.85V go to 2.85V
→
USIM IF work
Start
Work well?
VREG_USIM_2.85V is 2.85V?
USIM_P_CLK is run?
Change the Main board
End
Check J1
Yes
No
YES
NO
Re-insert the SIM card
Change SIM card
Work well?
End
Yes
No
Содержание L704I
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