SAMSUNG Proprietary-Contents may change without notice
SGH-Z320i Flow Chart of Troubleshooting and Circuit Diagrams
2-
33
This Document can not be used without Samsung's authorization
R601
R611
C615
00
6
R
RFTX_2.85V
C607
C634
C625
C619
C631
C630
C623
L600
C616
C614
C635
C613
C638
C626
C622
L606
C617
C632
L604
L602
C604
L607
SYNT_2.85V
R614
RFTX_2.85V
26
VDDA7
27
VDDA8
31
9
A
D
D
V
43
M
D
D
V
8
F
E
R_
E
N
U
T
V
52 VDDA15
54
VDDA16
56
VDDA17
5
2
A
D
D
V
7
3
A
D
D
V
10
4
A
D
D
V
15
5
A
D
D
V
23
VDDA6
49
VCONTROL
9
E
N
U
T_
O
C
V
4
1
A
D
D
V
36
01
A
D
D
V
39
11
A
D
D
V
41
21
A
D
D
V
48 VDDA13
50
VDDA14
18
TX_IP
40
P
C_
D
O
M_
X
T
17
TX_QN
16
TX_QP
42
B
F_
O
C
V_
X
T
53 UMTS1900_OUT
51
UMTS2100_OUT
55
UMTS800_OUT
11
P
Q
_
X
R
32
NI
_
O
C
V
_
X
R
33
S
AI
B
_
R
44
SBCK
45
SBDT
46
SBST
6
O
X
C
T
19
TX_IN
38
N
NI
_0
09
M
S
G
37
P
NI
_0
09
M
S
G
58
NC1
59
NC2
47 RF_ON
14
NI
_
X
R
13
PI
_
X
R
12
N
Q
_
X
R
28
FAQ2
57 GND
34
N
NI
_0
08
1
M
S
G
35
P
NI
_0
08
1
M
S
G
24
GSM1900_INN
25
GSM1900_INP
21
GSM850_INN
22
GSM850_INP
U600
2
1
P
C
30
2
P
C
1
1
D
L
O
H
_
P
C
29
2
D
L
O
H_
P
C
20
DAC_REF
3
1
Q
A
F
R603
L605
C606
L603
C624
MSMP_2.6V
C618
RFTX_2.85V
SYNT_2.85V
RFTX_2.85V
O
X
C
T
TX_AGC_ADJ
UMTS_TXRF
TX_IM
TX_IP
TX_QM
TX_QP
N
X
R
_
S
C
D
P
X
R
_
S
C
D
N
X
R
_
M
S
G
P
X
R
_
M
S
G
PCS_RXP
PCS_RXN
P
C_
D
O
M
O
C
V
X
T
DAC_REF
E
N
U
T_
O
C
V
SBCK
SBDT
SBST
RF_ON_TX_ON
MI
_
X
R
PI
_
X
R
M
Q
_
X
R
P
Q
_
X
R
VCO_TUNE