Read Panasonic KX-T7735RU / KX-T7735RUPP (serv.man3) Service Manual Supplement online
1.3. SCHEMATIC DIAGRAM
Correction from the Original Service Manual Section 17
(21)
(20)
(19)
(18)
(16)
(14)
(13)
(12)
(11)
(9)
(10)
(7)
(5)
(4)
(3)
(2)
(1)
(8)
(6)
(17)
(15)
KX-T7735RU : MAIN BOARD NO.1
R31
R49
R50
R50
R48
R46
R47
R51
C44
C45
C61
C57
C63
R56
+6V
R54
R55
R57
C46
R42
C42
R58
C65
C59
C64
C58
C55
C52
C51
C50
C27
R61
C62
R29
C60
R70
R67
R68
AG
Q15
1
4
3
2
5
Q16
1
4
3
2
5
R69
C48
C47
R45
C53
R52
C56
C54
R36
A5V
C30
R38
Q11
1
4
3 2
5
R134
D22
CO5
D26
CO9
D28
CO11
Q106
1
4
3
2
2
5
R131
D27
CO10
R132
R133
D23
CO6
D24
CO7
R135
R136
D20
CO3
D18
CO1
D19
CO2
D5V
SW26
CO1
SW46
6
SW40
5
SW22
2
SW34
4
SW23
CO4
SW12
CO11
SW14
CO9
SW33
*
SW27
9
SW25
CO2
SW15
7
SW28
3
SW21
8
SW18
CO7
SW11
CO12
SW17
CO8
SW45
#
SW24
CO3
SW20
CO5
SW19
CO6
SW39
0
SW16
1
D29
CO12
3
4
1
2
D25
CO8
D21
CO4
R138
R137
Q108
1
4
3
2
2
5
C72
IC4
1
CD
2
FC2
3
FC1
4
Vin
5
VO1
6
VCC
7
GND
8
VO2
R62
R65
C71
R64
R43
C73
IC5
11
10
12
IC5
2
1
13
C74
C75
R66
R60
R59
R30
C28
R37
R53
R63
C31
CN2
1
+
2
-
CN3
1
+
2
-
R72
R71
D12
ICM
R139
DG
AG
AG
AG
AG
AG
AG
AG
AG
AG AG
AG
IC5
3
4
5
JK3
1
2
3
4
5
AG
AG
D16
MUTE
D17
STORE
D14
CONF
D15
FWD/DND
D13
SP-PHONE
SW31
MUTE
SW30
FWD/DND
SW35
M.W
SW32
STORE
SW29
CONF
SW37
FLASH
SW36
PAUSE
SW47
SW48
SW44
ICM
SW41
REDIAL
SW38
TRANSFER
SW43
SP-PHONE
SW49
SW50
JK2
HANDSET JACK
3
SP
1
MIC
2
4
4
A1
A2
A3
A4
A5
A6
A7
A8
A9
B1
B2
B3
B4
B5
B6
B7
B8
E4
E3
E2
E1
E5
E6
G2
G1
AG1
M3
AG2
SP- SP+
SW51
PROGRAM
TP199
TP200
TP201
TP202
SW1
3
4
2
1
2
1
SW13
CO10
CN6
1
2
2
CN4
1
2
CN5
1
2
2
R140
D11
M.W
AG
A5V
Q8
Q13
Q14
Q7
Q18
Q104
1
6
2
Q104
4
3
5
Q103
1
6
2
Q103
4
3
5
C84
R84
R44
C49
AG
R89
Q12
1
4
3
2
5
A5V
R73
Q105
1
4
3
2
2
5
Q107
1
4
3
2
2
5
CN8
8
7
5
4
9
6
7
5
4
9
6
CN7
2
3
5
6
1
4
3
5
6
1
4
CN8
2
1
3
1
3
CN7
8
9
7
9
7
AG
K2
K1
M1
SP1
M2
SP2
N3
N2
N4
N1
AG
C76
R90
D31
D32
D33
D34
R206
R207
C29
R208
R78
R79
AG
R86
R85
R88
R87
C66
C67
R80
B9
SW53
F1
SW54
F2
SW55
F3
SW56
F4
SW57
F5
SW58
F6
SW59
F7
SW60
F8
SW61
F9
SW62
F10
SW63
F11
SW64
F12
AG
C43
J2
J3
J3
D5V
SW2
3
4
2
1
2
1
R141
N6
N5
R158
AG
CN8
10
3
CN7
10
7
C207
R210
R211
R212
R209
IC3
28 RRX
27 RXI
26 RXO
25 ACF
24 VLC
23 XDC
22 GWD
21 VB
20 Vcc
19 SKI
18 CS
17 AGC
16 +V
15 SKO
27 RXI
26 RXO
25 ACF
24 VLC
23 XDC
22 GWD
21 VB
20 Vcc
19 SKI
18 CS
17 AGC
16 +V
15 SKO
14
SKG
13
XDI
12
CP2
11
CP1
10
MC0
9
MCI
8
RLO
7
RLI
6
TL0
5
TLI
4
TX0
3
TXI
2
RTX
1
RR
C208
C209
C210
SP_RX_MUTE
SP_TX_MUTE
SP_TX_MUTE
HS_POWER
SP_POWER
SP_POWER
HS_SP_VOL1
HS_SP_VOL2
SP_VOL3
SP_VOL4
HS_SP_VOL2
HS_SP_VOL1
C[1]
C[0]
C[3]
C[2]
T_CONT3
T_CONT4
L[0]
L[1]
L[2]
L[3]
L[4]
L[5]
L[6]
L[7]
SP_TX_MUTE
SP_RX_MUTE
T_CONT2
HS_POWER
K[0]
K[1]
K[2]
K[3]
K[4]
K[5]
HEAD_SET
K[6]
HS_MUTE
RING_OFF
C[4]
C[5]
K[8]
K[9]
SP_POWER
1K
30K
68K
68K
2.2M
5.6K
5.6K
2.7M
0.033
0.022
0.1
6.3V1000
6.3V100
3.3
18K
150K
1K
0.047
15K
0.1
100K
0.01
0.1
0.1
Z4.7
10
Z10
2.2
2.2
0.1
0
0.022
470K
0.022
27K
220K
120K
56K
0.1
0.033
3.3K
6.3V47
100K
6.3V220 6.3V100
150
6.3V220
6.8K
39
270
39
270
270
39
220
270
NC
NC
NC
NC
NC
NC
470K
NC
NC
NC
NC
1.5K
12K
100K
2200P
27K
47K
NC
22
47K
47K
39
56
0.01
680K
4.7K
0.033
100K
100K
NC
470
1K
NC
2200P
22K
47K
39K
270K
NC
5.6K
39K
0.01
3300P
39K
NC
NC
NC
NC
820 1%
2K 1%
1000p
4.7K
4.7K
4.7K
4.7K
0.01
1000p
0.01
R
R
R
G
R
G
R
G
R
G
G
G
R
R
R
G
G
G
R
G
R
G
G
R
PSUP1395XA-B
PSUP1395XA-C
PSUP1395XA-B
N/C
Backlight ASSy
C215
1000p
NC
NC
C212
1000p
1000p
NC
NC
2.4V
2.8V
1.5V
2.7V
2.8V
5.4V
5.3V
2.0V
0
0
2.8V
2.7V
2.5V
2.9V
2.8V
2.7V
2.8V
2.8V
2.8V
2.2V
1.5V
2.1V
2.1V
2.1V
0
0
0
2.8V
6.1V
2.9V
2.8V
4.6V
SP-Phone
Reception Signal
Reception Signal
SP-Phone
Transmission Signal
Transmission Signal
Ringer
Signal
Signal
5.4V :
0V :
The handset is in use
The speakerphone is in use
The speakerphone is in use
On using the speakerphone
AG
D8
3
KX-T7735RU
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