Panasonic KX-T7735RU / KX-T7735RUPP Service Manual ▷ View online
NC
C83
C81
0.047
C21
0.1
R22
3.3K
C22
0.01
C23
0.015
R24
270K
R26
4.7K
R28
2.2K
R27
5.6K
T1
1
3
4
5
C3
16V22
C2
16V10
R4
68K
R1
100K
R2
22K
JK1
1
H
2
T
3
R
4
L
C91
0.1
R91
10K
C94
0.001
C93
0.047
R95
470K
IC6
5
6
7
R94
4.7K
R92
18K
A5V
R93
10K
IC6
3
2
1
R97
10K
R98 15K
R96
100K
D3
R99
10K
C95
Z0.1
R100
100K
A5V
C24
0.1
IC1
64
RD1
63
RD0
62
VTref
61
TONR
60
TONC
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
RE0
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
T2
5
4
9
10
1
2
6
7
R101
220
R102
220
IC5
8
9
6
R21
2.7K
R41
4.7K
R81
15K
R25
470K
R8
33
R9 20K
R15
6.8K
R14
18
+6V
R13
470K
C8
0.22
R12
2.2K
R10
2.7K
R34
22K
C9
6.3V100
C92
Z1
D5V
1M
R121
IC2
9
10
8
150P
C102
IC2
5
4
6
10K
R104
1K
R108
4.7K
R107
IC2
13
12
11
100
R105
IC2
1
2
3
10K
R103
D5V
2.2K
R106
D5
V
C106
Z0.01
DG
DG
12P
C108
12P
C109
4MHZ
X1
C107
Z0.1
DG
R23
120
R82
4.7K
R83
0
R122
3.3K
C103
Z2.2
C101
50VZ0.01
D5V
DG
DG
D5V
IC2
7
14
C105
Z0.01
A5V
IC6
4
8
C96
Z0.01
D4
PC1
1
2
3
4
R3
1.8K
R5
47
NC
C1
R7
27K
IC9
RESET 1
Vin
2
GND
4
NC
3
R6
680
C4
2.2
C41
0.1
A5V
C85
Z0.01
IC5
7
14
C25
4.7
R39
47K
R40
47K
DG
DG
DG
AG
AG
AG AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
AG
DG
H
T
R
L
T
R
L
C34
0.1
AG
R123
0
R124
0
D5V
Vref
CC
DET
IC10
1
2
3
4
2
3
4
5
6
7
8
C26
0.1
R32
12K
C32
0.1
R35
56K
C33
0.015
R77
39K
R76
68K
C35
Z1
C6
1000P
NC
C5
Q101
Q3
Q5
Q4
Q102
Q2
Q1
Q10
Q6
Q20
AG
DG
AG
R74
5.6K
D5V
NC
R153
D5V
DG
R17
0
NC
C13
C36 Z0.1
NC
R19
NC
R20
C7
820P
NC
R33
C82
NC
C14
0.047
SW52
HOOK
SW42
HOLD
AG
AG
J1
AG
A5V
D5V
D5
+6V
+6V
DG
C204
Z0.1
6.3V100
C205
DG
25V47
C203
R201
2.2K
6.3V1000
C206
AG
V1
D6
J4
IC7
1
I
3 O
2
B
D5V
NC
C11
NC
C10
NC
J5
B10
D10
NC
R152
D5V
D5V
D5V
NC
R151
DG
DG
Q109
1
4
3
2
5
RA1
47K
DG
Q19
DG
C110
Z0.1
D5V
DG
DG
DG
CN1
13
RS
11
DB7(SI)
12
CSB
10
DB6(SIC)
14
Vss
9
Vdd
3
V0
7
V4
6
V3
5
V2
V1
4
2
ResetB
1
Vss
8
Vss
R156
15K
D2 RE2
3
1
2
4
D1
3
4
1
2
C116
2.2
C117
Z0.01
C112 2.2
C114 2.2
C115 2.2
C115 2.2
C113 2.2
R127
56K
R128
2.7K
R125
47K
R126
33K
C12
0.015
R16
56
R154
100K
100K
NC
R155
R157
0
T_CONT1
DOUT
DCLR
DIN
DI_INT
DOUT
DI_INT
DIN
DCLR
HS_SP_VOL1
HS_SP_VOL2
SP_VOL4
SP_VOL3
T_CONT1
T_CONT2
T_CONT3
T_CONT4
C[5]
L[0]
L[1]
L[2]
L[3]
L[4]
L[5]
K[5]
K[6]
K[0]
K[4]
K[1]
K[2]
K[3]
RING_OFF
L[7]
HEAD_SET
L[6]
HS_MUTE
C[1]
C[2]
C[3]
K[9]
K[8]
K[7]
C[0]
C[4]
1.7V
1.5V
1.6V
0
0
0
0
0
0
0
5.4V
5.4V
5.4V
5.2V
5.4V
5.2V
5.4V
0.8V
5.4V
5.4V
5.4V
5.4V
5.4V
0
0
0
0
0
0
5.4V
0
0
0
0
0
0
5.4V
5.4V
5.4V
5.4V
5.4V
5.4V
5.4V
13.5V
1.8V
0
0
1.2V
2.0V
1.6V
1.9V
1.9V
5.4V
0
0
5.2V
0
4.0MHz
5.4V
5.4V
0
0
0
5.1V
0
5.4V
5.4V
6.1V
20V
Handset
Recepton Signal
Recepton Signal
Handset
Transmission
Signal
Transmission
Signal
DTMF
Signal
for Dial
Signal
for Dial
1.8V
(1)
(2)
(3)
(4)
(6)
(8)
(9)
(10)
(11)
(12)
(15)
(13)
(13)
(17)
(18)
(19)
(20)
(21)
(14)
(16)
(5)
(7)
KX-T7735RU
MAIN BOARD NO.2
33
KX-T7735RU
18 PRINTED CIRCUIT BOARD (MAIN BOARD)
18.1. COMPONENT VIEW
E1
E2
E3
E4
B1
A1
A2
A7
Q103
Q104
CN1
Q109
A9
K2
B10
B7
B8
R
T
B4
H L
~
~
SP1
SP2
AG1
K1
B5 E5
SPN
G2
M3
AG2
+6V
D5V
E6
Q102
V1
A6
AG
IC7
DG
A5
B8
B3
A8
D31
D33
D32
PSUP1395W -A
PSUP1395W -C
CN2
1
R
R
2
W
W
G1
SP+
M2
M1
B2 A3 A4
B9
64
49
48
33
32
17
16
1
W
W
R
R
2
2
1
1
CN4
CN6
R135 R134
Q108 Q107 Q106 Q105
R136
C113
C115
R125
RA1
RA2
R97
R91
C93
C91
1
3
4
R94
IC6
R95
C92
8
1
4
R151
R128
C95
D3
R99
C116
14
13
1
R137
R141
R140
R139
R138
R133 R132 R131
C110
R127 R126
R152
C114
C112
D10
Q20
C11
JK1
D1
~
~
R1
R2
R5
Q2
C35
R77
C36
C27
C28
C29
R31
1
4
10
1
C31
R3
PC1
C23
C103
C22
C34
R87
R85
R86
R82
R61
C75
C83
C76
R60
R107
C102
7
8
1
1
10
5
6
14
C109
R124
R123
IC1
C106
R201
C64
R63
R62
R62
R64
C71
Q16
Q15
C72
R88
C82
IC5
1
14
8
1
8
5
4
7
R22
R26
C1
T1
R100
R17
C13
C6
C14
R6
R9
C7
R21
C53
C21
R4
C41
R33
IC10
1
4
5
8
R12
C12
C96
C94
C4
R93
R98
Q1
R96
C10
R92
C5
R7
R14
R41
R81
J5
R8 R10
C8
R16
R15
R13
C42
C26
R32
R35
R76
C33
C32
R34
R30
R84
R208
R39
R24
R40
C85
R27
CN7
R25
C24
R28
C25
R89
R78
R58
IC4
C73
R65
C74
R70
C65
R106
R101
C101
R102
R105
R104
R122
R121
R153
D2
C105
IC2
R108
C108
R155
C107
R154
C117
X1
R103
Q101
T2
Q19
IC9
C204
C205
C206
C203
R71
R206
C43
R54
C46
R57 C60
R55
C58
R72
R58
C47
C44
R47
R48
R51
R52
C52
R44
C61
R59
R80
R67
R68
R66
C59
R53
C55
C51
C50
R49
C45
R50
C49
R79
16
30
15
1
IC3
C67
C66
C62
R45
A
C48 R46
R69
R42
R43
R207
C81
R83
R36
R19
R20
R74
R73
JK2
J3
J2
R23
C84
R38
R37
R29
Q11
R156 R157
Q12
Q3
Q8
Q10
Q18
Q5
Q6
Q7
Q13
W
R
R
1
2
CN5
Q14
Q4
C9
C2
C30
C3
C56
20
C63
C57
C54
W
R
2
1
CN3
30
35
50
D34
D5
D4
D6
2
3
1
JK3
4
5
PSUP1395W -B
N2
N1
N5
N6
N4
N7
N3
KX-T7735RU: MAIN BOARD COMPONENT VIEW
34
KX-T7735RU
18.2. BOTTOM VIEW
R90
SW1
HIGH-LOW-OFF
CN8
1
10
4
3
3
2
1
1
SW2
21
0
R141
4
3
3
2
1
1
KX-T7735RU: MAIN BOARD BOTTOM VIEW
D12
SW52
D14
D15
SW44
SW29
HOOK SW
INTERCOM
CONF
SW30
FWD/DND
SW36
PAUSE
SW51
PROGRAM
SW35
MESSAGE
D16
D17
SW37
SW31
SW32
SW16
SW22
SW40
SW34
SW28
SW38
REDIAL
AUTO DIAL
AUTO ANS
MUTE
STORE
FLASH
1
R158
4
5
6
SW46
2
3
SW15
SW33
SW41
7
SW21
SW39
SW42
SW45
8
SW27
9
#
0
HOLD
TRANSFER
SP-PHONE
SW43
SW50
SW48
D13
SW12
SW11
SW64
SW13
SW14
SW17
SW18
SW19
SW20
SW23
SW24
SW25
SW26
SW63
SW62
SW61
SW60
SW59
SW58
SW57
SW56
SW55
SW54
SW53
SW47
SW49
D29
CO12
CO11
CO10
CO9
CO8
CO7
CO6
CO5
CO4
CO3
CO2
CO1
D28
D27
D26
D25
D24
D23
D22
D21
D20
D19
D18
D11
35
KX-T7735RU
NT1
KXT7735RU
KXT7735RU
18.2. BOTTOM VIEW
R90
SW1
HIGH-LOW-OFF
CN8
1
10
4
3
3
2
1
1
SW2
21
0
R141
4
3
3
2
1
1
KX-T7735RU: MAIN BOARD BOTTOM VIEW
D12
SW52
D14
D15
SW44
SW29
HOOK SW
INTERCOM
CONF
SW30
FWD/DND
SW36
PAUSE
SW51
PROGRAM
SW35
MESSAGE
D16
D17
SW37
SW31
SW32
SW16
SW22
SW40
SW34
SW28
SW38
REDIAL
AUTO DIAL
AUTO ANS
MUTE
STORE
FLASH
1
R158
4
5
6
SW46
2
3
SW15
SW33
SW41
7
SW21
SW39
SW42
SW45
8
SW27
9
#
0
HOLD
TRANSFER
SP-PHONE
SW43
SW50
SW48
D13
SW12
SW11
SW64
SW13
SW14
SW17
SW18
SW19
SW20
SW23
SW24
SW25
SW26
SW63
SW62
SW61
SW60
SW59
SW58
SW57
SW56
SW55
SW54
SW53
SW47
SW49
D29
CO12
CO11
CO10
CO9
CO8
CO7
CO6
CO5
CO4
CO3
CO2
CO1
D28
D27
D26
D25
D24
D23
D22
D21
D20
D19
D18
D11
35
KX-T7735RU
NT1
KXT7735RU
KXT7735RU
