Panasonic KX-T7735RU / KX-T7735RUPP (serv.man3) Service Manual / Supplement ▷ View online
1 CHANGES
1.2. REPLACEMENT PARTS LIST
1.1. SUBJECT 1
Suffix
Reason for suffix change
A to B
PCB change (PSUP1395W to PSUP1395X)
SUFFIX LOCATION
Reason for Change
*The following items (1-8) indicate the reason for change. See the “Notes” column for each part in ORIGINAL AND NEW PARTS
COMPARISON LISTS.
1. Improve performance
*The following items (1-8) indicate the reason for change. See the “Notes” column for each part in ORIGINAL AND NEW PARTS
COMPARISON LISTS.
1. Improve performance
Remarks:
1. Mark *1 has been changed at the same time.
1. Mark *1 has been changed at the same time.
2. Change of material or dimension
3. To meet approved specification
4. Standardization
5. Addition
6. Deletion
7. Correction
8. Other
3. To meet approved specification
4. Standardization
5. Addition
6. Deletion
7. Correction
8. Other
Interchangeability Code (Symbol:B) Following V-Z interchange abilities are indicated on the Notes in the bottom column.
Parts
Set Production
V Original
New
Early (before change)
Late (after change)
Late (after change)
Original or new parts may be used in early or late production sets.
Use original parts until exhausted, then stock new parts.
Use original parts until exhausted, then stock new parts.
W Original
New
Early (before change)
Late (after change)
Late (after change)
Original parts may be used in early production sets only. New parts may be used in early
or late production sets. Use original parts where possible, then stock new parts.
or late production sets. Use original parts where possible, then stock new parts.
X Original
New
Early (before change)
Late (after change)
Late (after change)
New parts only may be used in early or late production sets.
Stock new parts.
Stock new parts.
Y Original
New
Early (before change)
Late (after change)
Late (after change)
Original parts may be used in early production sets only. New parts may be used in late
production sets only. Stock both original and new parts.
production sets only. Stock both original and new parts.
Z Other
Ref. No.
Part No.
Part Name & Description
Pcs
Remarks
Notes
Time of
change (Suffix)
Original (Old)
New
ACCESSORIES AND PACKING MATERIALS
A7
A7
PSQW2283Z
PSQW1794W
QUICK REFERENCE GUIDE
1
8
V
MAIN BOARD PARTS
IC3
IC3
C1CB00001850
C1CB00001673
IC
1
*1
8
Y
B
D7
----------
MA111
TRANSISTOR(SI)
1
*1
5
B
D8
----------
B0BC6R100010
TRANSISTOR(SI)
1
*1
5
B
C9,C56
ECEV0JA101
EEE0JA221WP
CAPACITOR, 220µF
2
*1
8
X
B
C25,C52
PQCUV1A475ZF
F1J0J1060006
CAPACITOR, 10µF
2
*1
8
X
B
C35,C92
PQCUV1C105ZF
ECUV1A105ZFV
CAPACITOR, 1µF
2
*1
8
Y
B
C50,C51,C103,
C112 to C115
C112 to C115
PQCUV1A225ZF
ECUV1A225ZFV
CAPACITOR, 2.2µF
7
*1
8
Y
B
C55
ECUV1A106ZF
F1J0J1060006
CAPACITOR, 10µF
1
*1
8
X
B
PC1
0N3181
B3PBB0000040
PHOTO COUPLER
1
*1
8
Y
B
R209 to R212
----------
ERJ3GEYJ472
RESISTOR, 4.7k
Ω
4
*1
5
B
R213 to R215
----------
ERJ3GEYJ473
RESISTOR, 47k
Ω
3
*1
5
B
RA1
D1H84734A024
----------
RESISTOR ARRAY, 47k
Ω
0
*1
6
B
RA2
D1H84724A024
----------
RESISTOR ARRAY, 47k
Ω
0
*1
6
B
2
KX-T7735RU
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
KX-T7735RU : MAIN BOARD NO.2
C83
C81
C21
R22
C22
C23
R24
R26
R28
R27
T1
1
3
3
4
5
C3
C2
R4
R1
R2
JK1
1
H
2
T
3
R
4
L
C91
R91
C94
C93
R95
IC6
5
6
7
R94 R92
A5V
R93
IC6
3
2
1
R97
R98
R96
D3
R99
C95
R100
A5V
C24
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
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
11 D2
12 D3
13 D4
14 D5
15 D9
16 D10
T2
5
4
4
9
10
1
2
2
6
7
R101
R102
D2
1
3
4
2
D1
1
3
4
2
2
IC5
8
9
6
R21
R41
R81
R25
R8
R9
R15
R16
R14
+6V
R13
C8
R12
R10
R34
C9
C92
D5V
R121
IC2
9
10
8
C102
IC2
5
4
6
R104
R108
R107
IC2
13
12
11
R105
IC2
1
2
3
R103
D5V
R106
D5V
C106
DG
DG
C108
C109
X1
C107
DG
R23
R82
R83
C110
R122
C103
C101
D5V
DG
DG
DG
D5V
IC2
7
14
C105
A5V
IC6
4
8
C96
D4
PC1
1
2
3
4
R3
R5
R7
D5V
DG
D5V
DG
R126
Q109
1
4
3
2
5
R127
DG
R125
R128
IC9
RESET 1
Vin
2
GND
4
NC
3
R6
C4
C41
A5V
C85
IC5
7
14
C25
R39
R40
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
AG
R123
R124
D5V
Vref
CC
DET
IC10
1
2
3
4
5
6
7
8
C26
R32
C32
R35
C33
R77
R76
C35
C6
C5
Q101
Q3
Q5
Q4
Q102
Q2
Q1
Q10
Q6
Q20
AG
DG
AG
R74
D5V
R152
D5V
R151
D5V
R153
D5V
DG
R17
C13
0.1
0.1
C36
R19
C12
C7
C82
C14
SW52
HOOK
SW42
HOLD
AG
AG
J1
AG
A5V
D5V
D5
+6V
+6V
DG
C204
C205
DG
C203
R201
C206
AG
V1
D6
J4
IC7
1
I
3 O
2
B
D5V
C11
C10
NC
J5
B10
CN1
4
V1
5
V2
6
V3
11
DB7(SI)
12
CSB
10
DB6(SIC)
1
VSS
9
Vdd
14
VSS
3
V0
7
V4
8
VSS
13
RS
2
ReSetB
C112
C113 C114
DG
C116
C117
R156
DG
Q19
DG
C115
D10
R157
R155
R154
R33
R213
R214 R215
R20
C1
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]
NC
0.1
0.047
6.8K
0.022
0.022
270K
3.9K
3.9K
5.6K
16V22
50V0.33
27K
100K
22K
0.1
10K
1000p
0.047
470K
4.7K 18K
10K
10K
15K
100K
10K
Z0.1
100K
0.1
220
220
6.8K
8.2K
33K
470K
33
18K
6.8K
56
18
470K
0.22
2.2K
2.7K
22K
6.3V220
1
1M
150P
10K
1K
4.7K
100
10K
2.2K
Z0.01
12P
12P
4MHZ
Z0.1
47
1.5K
0
Z0.1
3.3K
2.2
50VZ0.01
Z0.01
Z0.01
1.8K
47
82K
33K
56K
470K
2.7K
0
10
0.1
Z0.01
10
47K
47K
0.1
220
0
0.1
6.8K
0.1
56K
0.015
39K
68K
1
1000P
NC
5.6K
NC
NC
NC
470
Z0.1
NC
2200P
1200P
NC
0
Z0.1
6.3V100
25V47
2.2K
6.3V1000
NC
NC
2.2
2.2
2.2
2.2
Z0.01
15K
2.2
0
NC
100K
NC
47K
47K
47K
0.015
NC
C214
1000pF
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
Reception Signal
Reception Signal
Handset
Transmission
Signal
Transmission
Signal
DTMF
Signal
for Dial
Signal
for Dial
1.8V
(21)
(20)
(19)
(18)
(16)
(14)
(13)
(12)
(11)
(9)
(10)
(7)
(5)
(4)
(3)
(2)
(1)
(8)
(6)
(17)
(15)
D7
4
KX-T7735RU
1.4. PRINTD CIRCUIT BOARD (MAIN BOARD)
Correction from the Original Service Manual Section 18.1.
W R
2
1
CN4
W R
2
1
CN6
E2
E1
E3
E4
B8
KX-T7735RU : COMPONENT VIEW
A1
A7
A9
A3 A4
A2
B1
B9
B6
B4
N2
N3
N5
N1
N4
N7
N10
N11
N9
N8
E5
B5
N6
E6
B7
B2
A5
B3
A6
A8
SP+
SPN
JK3
5
4
1
3
2
PSUP1395X -C
PbF
C
W
R
CN5
2
1
PbF
D31
D33
D32
D
D34
W
R
CN2
2
1
C65
M3
R60
C64
R206
Q14
R72
R58
R54
C46
C60
R57
R67
R68
R69
R70
R42
R43
C43
R71
C50
R49
C45
C59
C51
C55
R50
C47
R45
C48
C44
R47
R46
R48
R51
R52
IC3
1
28
15
14
G2
G1
C49
C52
R44
C53
C56
C54
C63
C57
W
R
CN3
2
1
CN7
10
1
JK2
1
4
C30
1
8
5
4
IC10
C9
Q2
C2
C3
Q4
Q3
3
4
6
1
T1
Q1
PC1
D1
~
~
IC6
1
4
5
8
Q20
CN1
1
13
14
Q109
Q104
Q108
Q107
Q106
Q105
Q103
X1
C206
C205
IC7
C203
IC2
7
1
14
8
Q101
Q102
T2
10
1
5
6
7
8
14
1
IC5
Q18
Q6
Q5
Q7
Q12
Q8
Q10
Q11
8
1
4
5
IC4
Q16
Q15
Q13
L
H
D2
~
~
JK1
IC1
48
49
64
33
32
17
16
1
IC9
R156 R157
C115
R131
R214
R215
R132
R133
R134
R135
R136
C110
C114
C112
C113
R152
R127
R126
K2
D10
R128
R125
R213
R151 C116
C96
C94
R100
R209
R210
R212
R211
R97
R99 D3
R91
C93
R
95 R94
C92
C91
R93
C4
R92
R98
R96
C95
C1
R
C10
T
C11
R3
R1
R2
R5
R7
C5
C8
C12
C42
C33
C32
C84
C215
C214
C26
R17
R9
R6
C13
C7
R81
R8 R10
R32
J5
R34
R38
R37
R39
R24
R40
R25
R27
R36
R83
R65
R207
R201
R106
R105
C204
R89
R28
C211
C25
C85
C81
C73
R19
R74
R20
R23
R78
C61
R56
R80
R55
R59
C74
R73
J3
J2
C208
C212
C213
C24
R84
R29
R30
R208
R35
R76
R16
R15
R13
R41
C14
R4
R12
C21
C41
C6
R21
R33
R14
C35
R77
C36
C207
C29
R31
C27
C28
C31
SP1
C23
R22
R26
C22
C34
M2
SP2
M1
D8
R87
AG1
C82
C83
R82
R86
R88
R85
K1
C75
R61
C76
D6
C72
R64
R63
R62
R53
R79
C67
C62
C66
C58
C71
R66
AG2
AG
DG
V1
D4
D7
R107
+6V
C103
C102
R104
C117
R103
D5
D5V
Q19
R108
R122
R121
C108
C107
R155
R154
R153
C105
R101
C101
R102
C109
R123
R124
R137
R140
R139
R138
C106
B10
PSUP1395X -A
5
KX-T7735RU
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