1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
A
IN+
AI
N
GSX
(ALA
W)
NC
AG
BCLK
X
SYNC
PCM
OUT
PCM
IN
R
SYNC
PDN
DG
NC
V
DD
A
OUT
SG
SGC
NC
NC
1
2
R3
100K
C4
0.1
R7
22K
R8
100
R12
390
R1
1
10M
C6
1
R4
39K
C2
4V22
C17
4V47
A
B
R87
10K
R26
3.3K
C20
4V22
R91
56K
F
A
R18
68K
CN1
C 6 0
0 . 1
R65
10K
R16
10K
C8
0.1
R64
33K
R2
1K
C50
0.1
C14
0.1
VR1
50K(B)
(VOL)
R89
150K
R13
100K
R17
330K
R15
82K
C10
150P
R10
1K
C5
1
D
C
R6
100K
R5
10K
R66
470
C61
4V10
E
R1
1.5K
R93
10
D1
LNJ210C6RRA
(REC)
R63
330K
C
R27
4.7K
B
D
H
R81
180
R82
390K
R83
10K
C77
1
R84
390K
C69
0.1
R86
270K
R85
270K
D5
MA735TX
C7
0.1
C9
4V10
L1
D2
MA735TX
R20 1K
C19 3300P
C24
4V150
C81
4V150
R67
390K
C13
16V1
BATTERIES,3V
(TWO R03/LR03,
AAA,UM 4)
BACKUP
BATTERY
3V
SPEAKER
2.8cm (1
3 32
")
8ohm
MIC
D
S
G
D
S
G
POWER SUPPLY
CONTROL
POWER SUPPLY
Q10
SWITCHING
(BACK UP)
SWITCHING
DC-DC CONVERTER
POWER SUPPLY
POWER AMP
POWER SUPPLY
AGC
AGC
BUFFER AMP
AGC
MIC AMP
Q1 Q3
MIC AMP
CODEC
C1
0.15
J 1
J 2
5
4
CE
NC Vss
V OUT
EXT
1
2
3
3
2
1
MIC AMP
4
3
2
1
8
7
6
5
3.2V
3.3V
L102
0 ohm
L101
0 ohm
L100
0 ohm
G
R19
220K
C16
10P
JK1
EARPHONE
16ohm( 2.5)
D6
MA729TX
3.2V
3.3V
0V
2.6V
3.3V
3.3V
3.3V
3.3V
3.1V
0V
3V
0V
0V
1.4V
3.3V
0V
3.3V
0V
1.4V
3V 2.8V
1.8V
2.8V
0V 0V
0V 2.1V
1V
3.1V
2.5V
3.2V 3.3V
2.7V
0.6V
0V
3.3V
3.2V
1.6V
1.5V
1.6V
3.2V
3.2V
0V
1.6V
1.6V
0V
3.2V
0V 0V
0V
1.6V
1.6V
1.6V
1.7V
0V
3.1V
2.6V
1.6V
1.1V
1.7V
3.2V
1.1V
1.7V
3.2V
2.7V
3.2V
1.7V
2.6V
:POSITIVE VOLTAGE LINE :VOICE SIGNAL (ANALOG)LINE
:VOICE SIGNAL (DIGITAL)LINE