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SGH-S400i Flow Chart of Troubleshooting
2-
3
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C347
VCCD_1.6V
4
NC
5
NC
9
PGND
SW
10
VIN
1
VOUT
6
U312
7
AGND
2 AVIN
EN
3
11
GND
MODE/SYNC
8
L303
VCCD_1.8_PSC
VBAT
R344
TA304
TA305
R337
VCCD_1.8_PSC
C357
8
4
NC
5 NC
9
PGND
SW
10
VIN
1
VOUT 6
U311
7
AGND
2 AVIN
EN
3
11
GND
MODE/SYNC
VCCD_1.8V
VBAT
L302
C139
VRF_2.9V
C140
2
GND
3
OUT
VCC 4
1
VCON
OSC101
R150
R148
R120
R123
C180
AFC
CLK13M_RF