Samsung SGH-E340 - Page 22

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Flow Chart of Troubleshooting
7-2
1.8V
4V
VDD_VIB_2. 9
SIM_IO
AVDD
SIM_VCC
VDD_4V
1.8V
VDD_IMAGE
VDD_IO_HIGH
2.9V
2.9V
VDD_CORE_BT
1.8V
1.9V
VDD_VI B
AVDD_HFA
SIM_RST
2.9V
VDD_GSM_CORE
SIM_CLK
VCC_RX_TX
2.6V
VCC_SYN
2.6V
2.8V
VDD_IO_LOW
2.8V
C413
C405
C426
R406
C417
C412
C416
OSC400
CC7V-T1A
C419
R40 7
R401
NEG
POS
C423
BAT401
_SIMRSCD
_SIMRSHC
7
R403
32
VINT
29
VSAVE
30
_IRQ
10
_ONKEY
27
_REC1
1
_REC2
13
_RSTHC
11
44
43
SIMCKHC
8
SIMD3VBAT
40
SIME N
45
SIMIOCD
42
SIMIOHC
9
SIMVCC
41
VBAT
31
VCHG
28
RF12VBAT
23
22
RF1VDD
RF2VDD
24
SCL
2
SC N
38
SCP
37
SDA
3
SIMCKCD
MICBIAS
12
NC
53
54
NC
OSCI
26
OSCO
25
PWREN1
6
PWREN2
5
REFC
48
GPO2
47
46
GPO3
18
HCVBAT
HCVDD
17
IOD2VBAT
15
14
IOVDD
20
LPD1VBAT
LPVDD
19
D1VDD
21
16
D2VDD
D3VDD
39
GND
49
50
GND
GND
51
52
GND
GPO1
U403
CHGCUR/BATMAX
34
CHGDRV
33
CLK32K
4
CPVBAT
36
CPVDD
35
+VDD_IO_LOW
C40 6
C422
22UF
+VDD_IO_HIGH
C424
C40 7
C415
C421
C40 9
C410
+VDD_IO_HIGH
C404
R408
C411
3
4
5
6
G
7 8
G G
9 10
G
2-292292- 9
SIM400
1
2
U404
C425
C418
C414
TP401
V400
0
R40 2
C420
R404
R409
+VDD_IO_LOW
VDD_SLEEP
32KHz_DIGI T
+VDD_IMAGE
IT_PM U
BACKLIGHT
LCD_BL_ON
BU_RST
MIC_BIAS
TP402
+VDD_RX_T X
+VCC_SYN
+AVDD
+VDD_IO_HIGH
SIMRST
RSTON
AUX_ON
ONKEYN
SIMI O
SIMCLK
SDA
SCL
PON_TX
REF_ON
+VDD_IO_LOW
+AVDD_HF A
VBAT