Flow Chart of Troubleshooting
SIM_RST
SIM_CLK
VREG_USIM_3.0V
C542
C543
C544
C545
R412
C340
R318
U404
R300
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SIM500
6
1
1
6
5 5
2
2
4
3
3
4
G
G
G
G
10
9
8
7
D401
10-10
R529
SIM_IO
C541