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SGH-P400 Flow Chart of Troubleshooting
3-
23
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VBAT
M1
NEG
2
POS
1
1UF
C109
C108
1UF
1UF
C117
C116
1UF
10V
10UF
C119
1.2K,1%
R103
R102
330K
3
3
4
4
5 5
6
6
7
G
G
8
9
G
G
10
VRTC
CN100
1
1
22
C113
100PF
VCCD
C102
2.2UF
R111
10K,1%
C115
10NF
NC
R110
100NF
C100
VRTC
NC
R101
C101
33PF
C103
33PF
C104
33PF
3
1
2
5
6
4
Q101
1UF
VRF
VPAC
C111
C112
470NF
C110
1UF
10UF
C118
6.3V
0
R108
10K,1%
R112
3K
R109
33
42
VLDO_6
40
VLDO_7
VREF
30
VRTC
12
VSI
M
48
36
VL4S_A
VL4S_B
35
32
VL5S_A
VL5S_B
31
VLDO_1
9
VLDO_2
11
39
VLDO_3
VLDO_4
37
VLDO_5
3
VBAT
2
10
VDD12
VDD34 38
VDD5
34
VDD67 41
1
VEXT
VIB_DRV
4
15
SDO
16
SIM_CL
K
50
51
SIM_IO
49
SIM_RST
53 UP_CLK
UP_IO
52
UP_RST
54
VACC
PWR_KEEP
PWR_SW1N
46
47
PWR_SW2
RESETN
19
5
RING_DRV
RING_PWM
55
13 RTC_ALMN
SCLK
17
SDI
59
60
GNDG
GNDD1
6
28
GNDQ
14
INTRQ
7
LED1_DRV
LED2_DRV
8
PSW1_BUF
20
21
22
EN_3
EN_4[0]
23
24
EN_4[1]
EN_5
25
26
EN_5A
EN_5B
27
GND
57
58
GND
GND
ADC_AUX1
44
45 ADC_AUX2
56 ADC_TRIG
BTEMP
43
29
CREF
18
CSN
R105
10
U100
R1130
C105
VCCA
2
VCCD
1UF
Q102
1
3
VCCB
C106
100NF
C114
VCC
3
VSENSE
5
VCC_1.8A
2.2UF
U101
6
DRIVE
2
GND
ISENSE
1
4
PROG
2
VOSC
VBAT
VBAT
Q100
1
3
U102
2
5
6
3
1
4
R107
VBAT
TA_VEXT
CHG_DET
BACKLIGHT_2
47K,1%
UP_SCLK
UP_CS
RST
KEY_ROW(0)
KEY_COL(2)
EN_VRF
EN_VPAC
JIG_ON
SIMCLK
SIMRST
CHG_ON
ICHRG
TA_VEXT
XOENA
BACKLIGHT_1
PWR_KEEP
PWR_ON
RTCALARM
UP_SDI
SIMDATA
VREF
TA_VEXT