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(20)
(19)
Handset
Recepton Signal
(18)
(17)
(16)
(15)
(14)
(13)
(12)
AG
(11)
(10)
(9)
D5V
R154
C107
NC
Z0.1
DG
R155
100K
DG
4.0MHz
5.2V
0
C108
12P
D5V
R121
IC9
X1
4MHZ
1M
R122
NC
Vin
3
2
3.3K
DG
C109
12P
GND
RESET
4
1
C106
D5V
Z0.01
DG
R153
NC
(8)
DG
5.4V
(7)
5.4V
(6)
5.2V
(5)
(4)
5.4V
SW42
HOLD
AG
5.1V
0
(3)
5.4V
0
(2)
(1)
+6V
R14
18
C9
6.3V100
R15
1.7V
AG
6.8K
R13
470K
R12
C8
Q4
2.2K
0.22
C12
2200P
R16
56
AG
C26
0.1
R32
12K
R33
C36
NC
Z0.1
AG
IC10
0
1
8
Vref
R35 56K
1.2V
2
7
1.9V
2.0V
R77
3
6
CC
DET
AG
J5
R34
0
39K
4
5
1.9V
22K
C32 0.1
R76
68K
AG
AG
R27
C23
0.033
5.6K
R19
NC
C25
R28
R24
2.2K
270K
4.7
C24
R26
C34
AG
0.1
0.1
4.7K
C22
R74
R25
0.01
5.6K
470K
R20
NC
Q10
Q6
R39
R40
47K
47K
AG
R123
R124
0
0
D5V
0
1 RE0
5.4V
2 TEST
3 OSC1
4 OSC2
0
5 RESET
5.4V
6 X1
0.8V
7 X2
0
IC1
8 GND
0
9 D0
10 D1
11 D2
12 D3
0
13 D4
14 D5
15 D9
16 D10
5.4V
0
R6
680
AG
R17
C13
R9 20K
0
NC
C14
C4
C7
0.047
820P
2.2
C5
R7
1.5V
27K
NC
Q3
R10
C6
2.7K
1000P
R8
33
AG
C41
0.1
R41
4.7K
A5V
C21
R21
0.1
2.7K
R81
15K
C81
C33
0.047
0.015
AG
Handset
C35
Z1
Transmission
Signal
IC5
R22
3.3K
C82
NC
1.6V
AG
R82
4.7K
Q5
C83
R23
NC
120
AG
R83
0
AG
DTMF
Signal
for Dial
5.4V
0
R80
48
L[7]
R73
47
L[6]
46
R72
L[5]
R71
45
L[4]
R70
44
5.4V
L[3]
R63
43
L[2]
42
R62
L[1]
R61
41
L[0]
R60
40
0
R43
39
5.4V
38
R42
5.4V
R41
37
R40
36
35
R31
5.4V
R32
34
0
R33
33
5.4V
0
C3
16V22
Q1
T1
1
6
3
4
R1
R5
C2
16V10
47
100K
R2
22K
Q2
4
1
R4
PC1
68K
3
2
DG
C91
R91
0.1
10K
1.8V
C94
0.001
R95
R100
100K
470K
R97 10K
Q20
2
7
R99
D3
1
R98
3
IC6
10K
IC6
15K
C95
Z0.1
R96
1.6V
100K
AG
Q101
IC2
5
IC2
R104
R103
1
6
3
4
DOUT
2
10K
10K
C102
150P
D5V
DG
C103
Z2.2
D5V
R105
100
R108
1K
DG
IC2
Q102
R106
13
11
12
2.2K
DI_INT
R107
D4
IC2 9
4.7K
DIN
8
10
DCLR
5.4V
6.1V
20V
+6V
+6V
J6
0
D5V
IC7
V1
D5
R203
D5V
3
1
O
I
B
NC
2
J4
A5V
Q201
NC
C204
C206
C205
C203
6.3V1000
6.3V100
Z0.1
25V47
R205
NC
J1
DG
AG
DG
AG
C[3]
C[2]
C[1]
D5V
C[0]
R151
NC
D5V
RA1
47K
DG
R127
R126
2.2K
560
5
4
D5V
DG
Q109
R152
1
2
3
NC
DG
KX-T7730X MAIN BOARD NO.2
H
H
D1
T
3
1
T
R
4
2
R
L
L
C11
C10
NC
NC
C1
NC
R3
1.8K
C93
0.047
A5V
R94
R92
6
4.7K
18K
1.8V
5
C92
R93
Z1
10K
AG
D5V
D2
T2
3
1
5
10
R101
220
4
9
C101
50VZ0.01
1
7
R102
220
2
6
4
2
DG
V2
R201
13.5V
2.2K
R204
R202
NC
C201
NC
50V10
Q202
NC
D6
A5V
IC5
14
C85
CN1
10
Z0.01
DB7
9
DB6
AG
8
DB5
7
DB4
D5V
6
DATA/RW
IC2
4
STB/RS
14
5
SCK/E
C105
D5V
Z0.01
2
Vdd
R128
DG
10K
C110
Z0.1
3
Vo
A5V
R125
1
Vss
2.2K
IC6
8
DG
C96
Z0.01
AG
JK1
1
2
3
4
7
AG
7
DG
4
AG
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