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(20)
(19)
Handset
Reception Signal
R34
22K
(18)
(17)
(16)
C25
Z10
(15)
(14)
(13)
(12)
Q10
C
B
E
AG
(11)
(10)
(9)
D5V
D5V
R154
C107
NC
Z0.1
DG
R155
100K
4.0MHz
DG
5.2V
0
C108
12P
5.4V
D5V
X1
3.3K
IC9
4MHZ
R122
R121
3
2
NC
Vin
1M
1
C109
12P
4
GND
RESET
DG
5.4V
D5V
C106
Z0.01
DG
0.8V
R153
NC
DG
(8)
(7)
5.4V
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
6.3V220
R15
1.7V
6.8K
AG
TP43
R13 470K
Q4
C8
R12
C14
C212
2.2K
0.22
0.047
C12
1000P
0.015
R16
56
R10
2.7K
AG
C26
0.1
R32
12K
C36
R33
Z0.1
NC
IC10
AG
0
1
8
Vref
R35
1.2V
2
7
R77
C33
1.9V
2.0V
39K
0.015
3
6
56K
CC DET
AG
0
4
4
TP211
1.9V
C32
0.1
C35
R76
68K
Z1
AG AG
C23
R22
R27
0.015
3.3K
5.6K
R24
R19
270K
NC
R28
C207
2.2K
NC
C34
C24
R26
C
B
AG
0.1
4.7K
0.1
Q5
E
R74
R25
C22
5.6K
470K
R20
R23
0.01
NC
120
AG
Q6
C
R39
R40
B
47K
47K
E
AG
R123
R124
0
0
0
1 RE0
2 TEST
3 OSC1
4 OSC2
0
5 RESET
6 X1
7 X2
IC1
0
8 GND
0
9 D0
10 D1
11 D2
12 D3
0
13 D4
14 D5
15 D9
16 D10
5.4V
0
1
R6
680
AG
C13
R17
R9 20K
0
NC
C4
TP34
C7
TP33
820P
2.2
R7
C5
1.5V
27K
NC
C
B
E
Q3
C6
TP38
TP35
1000P
R8
33
AG
C41
R41
0.1
4.7K
A5V
C21
R21
R100
0.1
2.7K
100K
R81
Q20
15K
10K
C95
C81
Z0.1
0.047
AG
AG
Handset
Transmission
Signal
IC5
C82
NC
DOUT
1.6V
AG
R82
4.7K
C208
1000P
C83
NC
AG
R83
0
DI_INT
DIN
DCLR
+6V
+6V
D5V
DTMF
D5V
Signal
J4
A5V
for Dial
C206
6.3V1000
J1
AG
5.4V
0
48
AG
R80
L[7]
47
R73
L[6]
R72
46
L[5]
45
R71
L[4]
R70
44
5.4V
L[3]
43
R63
L[2]
R62
42
L[1]
41
R61
L[0]
R60
40
0
39
R43
5.4V
R42
38
5.4V
37
R41
R40
36
RA1
47K
R31
35
5.4V
R32
34
0
R33
33
5.4V
0
25
C3
16V22
Q1
T1
5
3
4
R1
R5
C2
47
16V10
100K
R2
C1
22K
NC
Q2
4
1
R4
PC1
68K
3
2
AG
R3
1.8K
R91
C91
0.1
10K
C94
C93
1.8V
0.001
0.047
R95
470K
R97
6
10K
2
7
R99
D3
1.8V
1
5
3
IC6
IC6
R98
15K
R96
1.6V
100K
D5V
Q101
R103
IC2
IC2
5
R104
10K
1
6
3
4
2
10K
C102
150P
D5V
DG
C103
5
Z2.2
4
D5V
R105
100
R108
1K
1
DG
2
Q102
IC2
C
13
R106
B
11
2.2K
12
E
R107
IC2
D4
4.7K
9
8
10
DG
5.4V
6.1V
20V
IC7
V1
D5
3 O
1
I
B
2
C204
C203
Z0.1
C205
25V47
6.3V100
DG
DG
C[3]
C[2]
C[1]
D5V
C[0]
R151
NC
D5V
D5V
R128
C110
10K
Z0.1
TP195
DG
R127
R126
2.2K
R125
560
2.2K
TP197
5
4
TP196
D5V
DG
DG
Q109
R152
1
2
3
NC
DG
KX-T7730CA MAIN BOARD NO.2
KX-T7730CA
JK1
H
H
1
D1
T
T
3
4
2
R
R
12
2
3
L
L
4
C11
C10
NC
NC
A5V
R92
R94
4.7K
18K
C92
R93
Z1
10K
AG
D2
T2
3
4
10
R101
9
220
C101
50VZ0.01
7
R102
1
2
6
220
R201
2.2K
13.5V
TP26
D6
A5V
IC5
14
7
CN1
C85
10
Z0.01
DB7
9
DB6
AG
AG
8
DB5
7
DB4
D5V
6
DATA/RW
IC2
4
STB/RS
14
7
5
SCK/E
C105
Z0.01
2
Vdd
DG
DG
3
Vo
A5V
1
Vss
IC6
8
4
C96
Z0.01
AG
AG
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