Samsung SGH-E360 Service Manual page 28

Flow Chart of Troubleshooting
ONKEYN
C406
R402
C408
Typical 3.7V
VBAT
TA401
VR400 C412
R403
+VDD_RX_TX
C413
R401
+VCC_SYN
C415
+VDD_IMAGE
C416
+AVDD
C417
+AVDD_HFA
C422
+VDD_IO_HIGH
C424
+VDD_IO_LOW
C425
R405
MIC_BIAS
RSTON
IT_PMU
SIMIO
OSC400
25 26 27 28 29 30
24
RF2VDD
23
RF12VBAT
22
RF1VDD
21
D1VDD
20
LPD1VBAT
19
LPVDD
18
HCVBAT
17
HCVDD
16
D2VDD
15
IOD2VBAT
14
IOVDD
13
_REC2
12 11 10 9 8
C423
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C407
C409
BU_RST
R716
C410
BAT400
31 32 33 34 35 36 C414
37
SCP
38
SCN
R404
D3VDD 39
SIMD3VBAT 40
41
SIMVCC
42
SIMIOCD
43
SIMCKCD
U400
44
_SIMRSCD
45
SIMEN
46
GPO3
47
GPO2
48
GPO1
GND 49
50
GND
GND 51
52
GND
NC 53
54
NC
7 6 5 4 3 2 1
TP401
+VDD_IO_HIGH +VDD_IO_HIGH
C304 C304
R302 R302
26M_CLK 26M_CLK
R304 R304
7-2
+VDD_SLEEP
+VDD_IO_LOW
SIM_VCC
SIM400
SIM_IO
SIM_CLK 1
6
2 5
3
SIM_RST 4
G G G G
10 9 8 7
C418
C421 C419 C420
VR401
+VDD_IO_HIGH +VDD_IO_HIGH
U302 U302
1 NC 1 NC VCC 5 VCC 5
2 2
INA INA
R303 R303
3 3 4 4
GND GND OUTY OUTY
AUX_ON
SCL
SDA
32KHz_DIGIT
PON_TX
REF_ON
SIMRST
SIMCLK
26M_DIGIT 26M_DIGIT