Read Panasonic KX-T7740X (serv.man2) Service Manual online
JK1
4
H
2
R
3
T
1
L
220
R1
IC2
5
4
4
6
10K
R3
150P
C2
10K
R4
IC2
1
2
2
3
2.2K
R6
4.7K
R7
IC2 9
10
8
IC2
7
14
C4
Z0.01
T1
5
4
9
10
1
2
6
7
220
R2
D1
4
3
2
1
D5V
1K
R8
100
R5
D5V
IC2
13
12
12
11
D5V
D5V
C1
50V Z0.01
D2
Z2.2
C3
D5V
IC1
64
COMP1
63
COMP0
62
P82
61
P81
60
P80
59
VCC
58
SEL
57
RA1
56
RA0
55
R93
54
R92
53
R91
52
R90
51
R83
50
R82
49
R81
48 R80
47 R73
46 R72
45 R71
44 R70
43 R63
42 R62
41 R61
40 R60
39 R43
38 R42
37 R41
36 R40
35 R31
34 R32
33 R33
17
D11
18
D12
19
D13
20
R00
21
R01
22
R02
23
R03
24
R10
25
R11
26
R12
27
R13
28
R20
29
R21
30
R22
31
R23
32
R30
1
VCref
2
TEST
3
OSC1
4
OSC2
5
RESET
6
X1
7
X2
8
GND
9
D0
10
D1
11
D2
12
D3
13
D4
14
D5
15
D9
16
D10
C11
Z0.01
NC
R13
NC
R14
4MHZ
X1
R12
3.3K
12P
C9
12P
C10
1M
R11
IC4
RESET
1
Vin
2
GND 4
NC 3
D5V
D5V
Z0.1
C13
6.3V220
C12
D5V
390
R9
390
R10
C8
Z0.1
IC3
1
I
3
O
2
B
6.3V1000
C7
Z0.1
C6
GND
D5V
D5V
H
L
T
R
Q1
Q2
25V47
C5
R15
1.5K
D3
K[6]
K[7]
K[8]
K[5]
K[4]
K[3]
K[9]
DIN
C[0]
C[1]
C[2]
C[4]
DOUT
DCLR
K[0]
K[1]
K[2]
DINT
C[3]
L[22]
L[20]
L[18]
L[16]
L[14]
L[12]
L[10]
5.1V
4.8V
0
0
0
0
0
0
0
0
5.1V
2.5V
5.1V
0.8V
5.1V
5.1V
0
5V
0
5V
0
5V
0
0
4MHz
0
0
5.1V
5.1V
22V
13.5V
5.1V
5.1V
(1)
(3)
(2)
(4)
KX-T7740X-B MAIN BOARD NO.2
25
KX-T7740X-B
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