Samsung SGH-E770 - Page 23

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SGH-E770 Flow Chart of Troubleshooting
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2-19
35
T
A
B
V
47
VCCA
1
B
C
C
V
C
P
V
41
23
V_IF1
2
F
I
_
V
29
V_RF
21
32
-
N
I
_
F
I
24
IF_OUT+
25
IF_OUT-
27
LE
22
LO_IN
33
C
N
PAC_EN
45
30
C
P
A
V
6
5
D
N
G
7
6
D
N
G
8
7
D
N
G
9
8
D
N
G
10
9
D
N
G
53
GSM_IN
15
T
U
O
_
M
S
G
31
+
N
I
_
F
I
GND29
50
4
3
D
N
G
GND30
52
GND31
54
55
GND32
GND33
56
57
GND
4
D
N
G
5
38
1
2
D
N
G
39
2
2
D
N
G
40
3
2
D
N
G
42
4
2
D
N
G
43
5
2
D
N
G
44
GND26
48
GND27
49
GND28
GND14
16
17
GND15
18
GND16
20
GND17
34
8
1
D
N
G
36
9
1
D
N
G
3
2
D
N
G
37
0
2
D
N
G
26
DATA
51
DCS_IN
19
DCS_OUT
1
D
N
G
211
0
1
D
N
G
12
1
1
D
N
G
13
2
1
D
N
G
14
3
1
D
N
G
PAM101
46
BANDSEL
28
CLK
C136C135
C138
L107
VBAT
C117
VRF_2.9V
C121
VRF_2.9V
C118
R114
C137
R111
9
2
1
C
C128C127
R115
C100
BAND_SEL
LO
SERLE
SERDAT
IF_OUT+
IF_OUT-
GSM_OUT
SERCLK
DCS74945_OUT
DPCS_OUT
GSM74945_OUT
+
F
E
R
_
F
I
-
F
E
R
_
F
I
PAC_EN
VAPC