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4.11 SIM Detect Troubleshooting
USIM Initial sequence of KU730 is :
USIM_CLK,USIM_RST,USIM_DATA triggered -> VREG_UIM_2.85V go to 3.0V -> USIM IF work
Start
Re-insert the SIM card
Work well?
VREG_UIM_2.85V is 3.0V?
USIM_P_CLK is run?
Change SIM card
Work well?
Change the Main board
VREG_USIM_2.85V(J500 Pin 1)
USIM_P_RST(J500 Pin 2)
Yes
No
NO
Check J500
YES
Yes
No
- 101 -
4. TROUBLE SHOOTING
End
End
USIM_P_DATA
(J500 Pin 6)
USIM_P_CLK(J500 Pin 3)
J500
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Table of Contents
Troubleshooting
