Read Panasonic KX-T7730CA Service Manual Supplement online
7
KX-T7730CA
KX-T7730CA MAIN BOARD (2/2)
(1)
(2)
(3)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(13)
(14)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(22)
(23)
(24)
(25)
(26)
(27)
(28)
(25)
(26)
(27)
(28)
(29)
(30)
(31)
(30)
(31)
(32)
(33)
(33)
(34)
(35)
(11)
(12)
(12)
1.7V
1.5V
1.6V
0
0
0
0
3.3V
3.3V
3.3V
3.3V
3.3V
0
0 0
0
3.3V
3.3V
3.3V
3.3V 3.3V
13.5V
1.8V
0
0
0
0
0
(3.0V)
4.6V
2V
2V
2V
2V
2V
2V
1.6V
3.3V
0
0
3.3V
0
0
3.3V
0
3.3V
5.4V
6.1V
20V
Handset
Recepton Signal
Recepton Signal
1.8V
1.3V
0
2.0MHz
3.3V
0
0
Handset
Transmission
Signal
Transmission
Signal
DTMF
Signal
for Dial
Signal
for Dial
3.3V
0
0
0
3.3V
3.3V
0
K0
K6
K5
K4
K3
K2
K1
C0
C1
C2
C3
C5
C4
L7
L6
L5
L4
L3
L2
L1
L0
L6
L5
L4
L3
L2
L1
L0
D6
Q101
Q109
1
B1
2
E
3
B2
4
C2
5
C1
IC7
3 OUT
2
GND
1
VCC
IC5
1 I/O1
2 O/I1
2 O/I1
12
CONT4
13
CONT1
3 O/I2
14
VDD
4 I/O2
11
I/O4
5 CONT2
10
O/I4
6 CONT3
9
O/I3
7 VSS
8
I/O3
D10
D3
D4
D5
D7
C8
0.22u
C103 2.2u
C113 2.2u
C112 2.2u
C114 2.2u
C115 2.2u
C116
2.2u
C21
0.1u
C26
0.1u
C41
0.1u
C42
0.1u
C81
0.1u
16
C91 0.1u
C14
0.047u
C93 0.047u
C208
1000p
C212
1000p
C6
1000p
C101
0.01u
0.01u
C22
0.01u
C12
0.015u
C23
0.015u
C33
0.015u
C130
330p
330p
C7
820p
C215
220u
6.3
T2
1
2
4
5
6
7
10
9
8
CN1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R106
1k
R108
1k
R81
10k
R91 10k
R93
10k
R97
10k
R99
10k
R1 100k
R289
100k
R96
100k
R23
120
R82
1.5k
R126
15k
R156
15k
R98
15k
R14
18
R42 18k
R92
18k
R9
20k
R101
220
R102
220
R12
2.2k
R123
2.2k
R201
2.2k
R2
22k
R86
220k
R10
2.7k
R103
2.7k
R128
2.7k
R21
2.7k
R7
27k
R24
270k
R234
30k
R22
3.3k
R127
33k
R230
33k
R233
39k
R32
39k
R5
47
R237
470
R107
4.7k
R41
4.7k
R125
470k
R13 470k
R95
470k
R16
56
R105
68
R6
680
R15
6.8k
R4
68k
R77
8.2k
IC1
17
P3_5
18
P3_4
19
P3_3/*INT3
20
P2_7
21
P2_6
22
P2_5
23
P2_4
24
P2_3
25
P2_2
26
P2_1
27
P2_0
28
P3_6
29
P3_1
30
P8_6
31
P8_5
32
P8_4
33
P8_3
34
P8_2
35
P8_1
36
P8_0
37
P6_7
38
P6_6/TXD2
39
P6_5/CLK2
40
P4_5
41
P1_7
42
P1_6
43
P1_5
44
P1_4
45
P1_3
46
P1_2
47
P1_1
48
P1_0
49
P0_7/DA1
50
P0_6/DA0
51
P0_5
52
T_CONT1
53
P0_3
54
P0_2
55
P0_1
56
P0_0
57
P6_4
58
P6_3
59
P6_2
60
P6_1
61
P6_0
62
P5_7
63
P5_6
64
P3_2
1
P3_0
2
P4_2/VREF
3
MODE
4
HS_MUTE
5
P4_4/XCOUT
6
*RESET
7
P4_7/XOUT
8
VSS/AVSS
9
P4_6/XIN
10
VCC/AVCC
11
P5_4
12
P5_3
13
P5_2
14
P5_1
15
P5_0
16
P3_7
AG
AG
AG
AG
AG
R104
NC
DG
D3.3V
D3.3V
D3.3V
A5V
DG
D3.3V
DG
DG
D3.3V
+6V
D5V
D3.3V
DG
DG
D3.3V
DG
D5V
DG
DG
A5V
C5
NC
C13
NC
AG
AG
AG
C10
NC
AG
+6V
AG
AG
AG
AG
AG
C207
NC
AG
C82
NC
AG
D3.3V
DG
D3.3V
R154
NC
R155
NC
DG DG
AG
AG
R124
0
A5V
AG
DG
R8
33
DG
AG
AG
DG
DG2
D3.3V
DG
+6V
D5V
V1
H
T
R
L
T
R
L
B8
AG
SW42
HOLD
SW52
HOOK
J4
J1
AG
AG
JK1
1
2
3
4
5
T1
1
6
3
4
2
IC10
1 AOUT
2 A-IN
3 A+IN
4 GND
2 A-IN
3 A+IN
4 GND
5
B+IN
6
B-IN
7
BOUT
8
V+
IC6
1 AOUT
2 A-IN
3 A+IN
4 GND
2 A-IN
3 A+IN
4 GND
5
B+IN
6
B-IN
7
BOUT
8
V+
IC9
1
NC
2
A
4
Y
5
VCC
3
GND
R300
NC
D3.3V
R301
NC
R302
NC
R303
NC
IC11
1 CE
2 GND
3
VOUT
4
VDD
C205
220u
10
R17
0
C102
NC
Q5
Q3
Q4
Q102
Q20
DG
Q110
NC
C9
220u
10
C206
220u
10
C94
1000p
R94
4.7k
R100
68k
C104
0.01u
C108
0.1u
C110
0.1u
C117
0.01u
C132
1u
C2
10u
16
C204
0.1u
C210
0.01u
C3
22u
16
16
C36
0.1u
C4
2.2u
C85 0.01u
C92
1u
C95
0.1u
C96
0.01u
D1
4
1
3
2
D2
4
1
3
2
PC1
1
2
3
4
Q1
Q2
R3
2.2k
C203
47u
25
D40
(
)
PSUP01
PSUP1382ZD
PCB
Click on the first or last page to see other KX-T7730CA service manuals if exist.