LG B2070, Руководство по обслуживанию

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3. TECHNICAL BRIEF
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3.8 Radio Interface
B2070 has a built-in FM Radio.FM Radio Uses Ear Mic as the Antenna.
IC for FM Radio is Niigata NS953. B2070 can produce FM Radio Sound Both through Speakerand
Ear Mic.
Figure 3-23 Radio Circuit
) 8 0 6 1 (
H n 0 7 4
) 8 0 6 1 (
P U L L U P E C N E T S I X E
E C N E T S I X E N O N
O I D A R
) 8 0 6 1 (
) N O I T P O ( O I D A R
N W O D L L U P
H n 0 7 2
2 1 7 C
u 1 . 0
H n 0 0 1
1 0 7 L
R708
0
p 0 0 1 0 0 7 C
T X E V _ 8 V 2
C704
0.1u
u 3 3 0 . 0
M E M V _ 8 V 2
0 2 7 C
u 0 1 3 1 7 C
A N
2 2 4 R
K 7 . 4
0 1 7 R
100K R71
1
u 1
9 0 7 C
C705
0.1u
K 1
2 1 7 R
0 0 1
HVC376B
D700
1 0 7 R
1 1 7 C
u 1
p 8 1
6 2 7 C
HVC376B
D701
5 0 7 R
K 1
n 7 4
5 2 7 C
p 0 0 0 1 6 1 7 C
1 2 7 C
u 1
u 0 1
0 1 7 C
u 1 8 1 7 C
1 2 4 R
K 1 5
T X E V _ 8 V 2
3 0 7 R
K 2 1
u 1 . 0
3 0 7 C
M 0 1
p 0 0 1 8 0 7 C
7 0 7 R
3 2 7 C
u 1
H n 8 1
2 0 7 L
u 0 1 7 1 7 C
u 1 . 0 6 0 7 C
8 2 7 C
u 1
T X E V _ 8 V 2
u 1 9 1 7 C
7 2 7 C
p 8 1
9 0 7 R
K 7 . 4
5 1 7 C
p 1
u 1 7 0 7 C
H n 8 1
3 0 7 L
2 2
6
O D P
3 2
O D R
32
RFIN RFIP
31
4 2
O S S R
11
SCL SDA
13
ST
O
10 14
VDD
2
O L V
F R V
1
S S V
7
9
X1
8
2 X
L F A
R F A
9 1
30
CAGC
15
CDP1
7 1
1 L P F
16
FPL2
O L G
5
GRF
29
0 2
L C C H
1 2
R C C H
27
IF
ADJ
IF
AGC
28
LIM1
25 26
LIM2
1 O L
4
2 O L
3
N I X M
1 2
3
4
3 5 9 S N
0 0 7 U
ADR
12
8 1
F p 5 . 2 1 _ 6 4 1 - C M
z H K 8 6 7 . 2 3
0 0 2 X
2 2 7 C
u 1
10
R713
V $
0 0 1
K 1
4 0 7 R
2 0 7 R
p 5
1 0 7 C
R706
12K
2 0 7 C
p 0 1
D L 1 1 8 4 M L 1 0 7 U
S S A P Y B
3
4
K C O L C
D N G
5
D N G P
1 1
N D H S
7
6
N D _ P U
0 1
D D V
2
1 N I V
8
2 N I V
1 T U O V
1
2 T U O V
9
0 0 7 L
H n 0 0 1
u 7 4 . 0
4 2 7 C
p 0 0 0 1 4 1 7 C
O T S _ O I D A R
T N A _ O I D A R
R _ K P S _ O I D A R
L _ K P S _ O I D A R
L R T C _ L O V _ O I D A R
K L C _ L O V _ O I D A R
N D H S _ P M A _ O I D A R
T C E T E D _ O I D A R
I S S R _ O I D A R
L C S _ O I D A R
A D S _ O I D A R