Panasonic KX-T7636RU Service Manual ▷ View online
Ref.
No.
Part No.
Part Name & Description
Remarks
R79
ERJ3GEYJ180
18
R80
ERJ3GEYJ220
22
R81
ERJ3GEYJ220
22
R82
ERJ3GEYJ472
4.7K
R83
ERJ3GEYJ101
100
R84
ERJ3GEYJ101
100
R85
ERJ3GEYJ122
1.2K
R86
ERJ3GEYJ122
1.2K
R87
ERJ3GEYJ271
270
R88
ERJ3GEYJ822
8.2K
R89
ERJ3GEYJ562
5.6K
R90
ERJ3GEYJ272
2.7K
R91
ERJ3GEYJ122
1.2K
R92
ERJ3GEYJ561
560
R93
ERJ3GEYJ331
330
R94
ERJ3GEYJ180
18
R95
ERJ3GEYJ561
560
R96
ERJ3GEYJ331
330
R97
ERJ3GEYJ270
27
R98
ERJ3GEYJ102
1K
R99
ERJ3GEYJ5R6
5.6
R100
ERJ3GEYJ100
10
R101
ERJ3GEYJ100
10
R102
ERJ3GEYJ223
22K
Ref.
No.
Part No.
Part Name & Description
Remarks
R103
ERJ3GEYJ681
680
R104
ERJ3GEYJ270
27
R105
ERJ3GEYJ270
27
R106
ERJ3GEYJ270
27
R107
ERJ3GEY0R00
0
R108
ERJ3GEYJ121
120
R109
ERJ3GEYJ473
47K
R110
ERJ3GEYJ473
47K
R116
ERJ3GEYJ153
15K
R117
ERJ3GEY0R00
0
R118
ERJ3GEYJ105
1M
R119
ERJ3GEYJ224
220K
R120
ERJ3GEYJ103
10K
R121
ERJ3GEYJ102
1K
R124
ERJ3GEYJ105
1M
R125
ERJ3GEYJ274
270K
R126
ERJ3GEYJ682
6.8K
R127
ERJ3GEYJ100
10
R128
ERJ3GEYJ151
150
R129
ERJ3GEYJ473
47K
R130
ERJ3GEYJ221
220
R131
ERJ3GEYJ473
47K
R132
ERJ3GEYJ473
47K
R133
ERJ3GEYJ1R0
1
16 FOR THE SCHEMATIC DIAGRAM
Note:
1. DC voltage measurements are taken with an oscilloscope or a tester with a ground.
2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
33
KX-T7636RU-B
17 SCHEMATIC DIAGRAM
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(1
1) (12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
1/4
2/4
3/4
4/4
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
(k)
(m)
(n)
(p)
(q)
(r)
(s)
(t)
(u)
(v)
(w)
(x)
KX-T7636RU-B MAIN
AND SUB BOARDS (1/4)
CN7
1
2
CN6
1
2
L2
JK1
3
SP
2
1
MIC
4
AG
IC2
1
CD
2
FC2
3
FC1
4
Vi
n
5
VO1
6
VCC
7
GND
8
VO2
C38
0.015
R26
10K
C33
Z0.1
C27
6.3V100
A3.3V
C21
1000P
AG
C41 68P
R32 560K
R33
33K
R34
33K
R30 33K
C40 390P
R29
33K
R31
220K
IC4
GSR1
4
SCLK
13
VREF
24
DR
11
VFR1
5
GST1
3
VFTN1
2
DX
10
BCLK
9
VSS
18
VR1
6
VDD
7
LPC
16
FS
8
D
ATA
14
12
TNOUT
GST0
21
VFTN0
22
VFR0
19
GSR0
20
VR0
17
CSN
15
VFTP0
23
VFTP1
1
R28
22K
C37
0.1
R13
47K
DG
D3.3V
D3.3V
AG
Q1
E
C
B
DG
CN2
1
2
R5
3.3
D3.3V
CN1
2
LCD_RES
LCD_CS
1
LCD_A0
3
LCD_SCK
4
LCD_DA
T
A
5
MODELCOAD
22
R21
47K
DG
JK4
1
5
4
3
2
AG
CN5
1
HS2SP
2
GND
3
HS2MIC
4
C19
Z0.01
C20
1000P
1000P
C36
0.1
R27
15K
R19
1K
R20
2.2K
A3.3V
AG
AG
R18
2.2K
A3.3V
R17
1.8K
C43
0.1
A3.3V
AG
CN4
1
2
3
4
R23
33K
R24
56K
C32
1200P
C39
NC
R14
SP1
MIC1
AG1
SP2
AG2
MIC2
MIC3
AG3
SP3+
SP3-
C25
Z0.01
C26
Z0.01
NC
R16
R12
3.3
C28
Z22
C29
Z10
C30
Z4.7
C31
Z10
C23
Z0.1
DG
D3.3V
C18
Z0.1
Z0.1
R10
1K
R1
1
1K
R9 10K
I1
I2
IC9
5
2
1 3 4
IC7
1
6
7
5
IC7
8
4
2
3
C108
1000P
D3.3V
D3.3V
NC
R111
NC
R112
NC
R113
NC
R114
NC
R115
DG
D3.3V
Q16
E
C
B
C1
13
NC
R120 10K
R121
1K
AG
C1
12
0.1
C1
14
R128
150
C1
17
Z0.1
R125
270K
R126
6.8k
R131
47K
D3.3V
C144
1000P
C42 3300P
C129
Z0.1
DG
L3
R130
220
C146
10P
C126
10P
C125
10P
C124
10P
C147
1000P
C120
10P
C35
10P
10P
C142 10P
C121
10P
C123 10P
C122 10P
C148 330P
C149 330P
A3.3V2
SP
MIC
T
O
BACK LIGHT
T
O
HANDSET
(7)
(6)
34
KX-T7636RU-B
KX-T7636RU-B MAIN
AND SUB BOARDS (2/4)
1/4
2/4
3/4
4/4
(y)
(z)
(A)
(B)
(D)
(E)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(1
1)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
SW144
SW145
SW146
SW143
SW137
PA
U
S
E
SW142
1
SW135
CONF
SW138
INTERCOM
SW139
AUT
O/ANSWER
SW136
FWD
SW130
CO4
SW127
CO1
SW126
3
SW131
CO5
SW129
CO3
SW128
CO2
SW123
CO8
SW121
CO10
SW122
CO9
SW1
15
CO17
SW1
14
CO16
SW1
13
CO15
SW134
2
IC3
64 CVcc
63 PB6
62 PB7
61 VTref
60 TONED
59 P87
58 P86
57 P85
56 P84
55 P83
54 P82
53 P81
52 P80
51 P77
50 P76
49 P75
48
P74
47
P73
46
P72
45
P71
44
P70
43
P67
42
P66
41
P65
40
P64
39
P63
38
P62
37
P61
36
P60
35
P57
34
P56
33
P55
17
P17
18
IRQ2
19
P15
20
P14
21
P13
22
P12
23
P11
24
TMOW
25
PA3
26
PA2
27
PA1
28
P50
29
P51
30
P52
31
P53
32
P54
1
X1
2
X2
3
Vss
4
OSC2
5
OSC1
6
TEST
7
Vcc
8
RES
9
P20
10
SCK
11
P22
12
SO1
13
SCK3
14
RxD
15
TxD
16
P27
DG
C24
Z0.1
DG
D3.3V
C17
Z0.01
DG
VDD
6
VDD
7
VSS
8
VSS2
9
VSS2
10
VOUT
11
CAP3-
12
CAP1+
13
CAP1-
14
CAP2-
15
CAP2+
16
V1
17
V2
18
V3
19
V4
20
V5
21
SW160
HOOKSW
R8
47K
D3.3V
D3.3V
CN8
1
KEYIN3
2
KEYIN4
3
KEYIN5
4
KEYIN6
5
KEYOUT7
6
KEYOUT6
7
KEYOUT5
8
NROW9
9
CLM0
CN9
1
2
3
4
5
6
7
8
9
R15 120
D133
SPPHONE
SW148
FLASH
SW150
REDIAL
SW152
CANSEL(PROG)
SW153
ENTER
SW154
MESSAGE
SW155
HOLD
SW157
DOWN
SW158
LEFT
SW159
RIGHT
C14
Z0.1
DG
C10
Z0.1
D3.3V
DG
C1
Z2.2
C2
Z2.2
C3
Z2.2
C4
Z2.2
C5 Z1
C6 Z1
C7 Z1
C8 Z1
C9
50VZ1
R3
1M
R4
1M
R1
1M
R2
1M
C22
Z0.1
IC8
2
4
DG
D2
D3
SW132
CO6
SW140
AUT
O/ST
ORE
D1
1
D8
AREACOAD3
D10
MODELCOAD2
D6
AREACOAD1
D7
AREACOAD2
SW141
4
SW133
5
SW125
6
SW147
TRANS
E1
E2
E4
E3
E6
E5
E8
E7
F1
F3
F2
F5
F4
F7
F6
F8
-1.2V
DG
C15
Z0.01
IC1
Vo
u
t
1
Vi
n
2
Vss
4
NC
3
DG
C13 Z0.1
R6
0
NC
C16
SW156
UP
SW149
SPPHONE
DG
SW1
17
7
SW109
8
SW101
9
SW1
18
*
SW1
10
0
SW102
#
SW1
19
CO12
S
W
111
CO13
SW103
CO19
SW120
CO1
1
SW1
12
CO14
SW104
CO20
SW105
CO21
SW106
CO22
SW107
CO23
SW108
CO24
SW124
CO7
SW1
16
CO18
F12
F1
1
F10
F9
E9
E10
E11
A1
1
B7
CN3
18
VDD
1
GND
11
GND
13
GND
2
RxRDY
3
BUSY
15
OPDET
4
SCLK
5
RxD
6
TxD
7
TxEN
8
OSX
9
OSR
10
OSYNC
12
OCK2M
14
RESET
OUT1
16
VDD
17
VDD
IC8
5
3
1
D3.3V
G1
G2
G3
G4
G5
G6
G7
H1
H2
H3
H4
H5
R25
47K
D3.3V
SW144_2
S1
SW145_2
S2
SW146_2
S3
SW143_2
S4
VOUT
V5
R7
470
D1
D12
C12
Z0.1
C1
1
Z4.7
D9
AREACOAD3
R107
0
J3
NC
J4
R132
47K
A12
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
KEYIN6
KEYIN5
KEYIN3
KEYIN4
KEYIN2
KEYIN1
KEYIN0
WEN
REN
INTN
RxD
SCLK
TxEN
BUSY
RxRDY
AD2
AD3
AD4
KEYOUT6
KEYOUT7
KEYIN4
KEYIN5
KEYIN6
KEYOUT7
KEYOUT6
KEYOUT5
KEYIN3
KEYIN4
KEYIN5
KEYIN6
KEYOUT4
KEYOUT3
KEYOUT1
KEYOUT0
KEYIN3
KEYOUT5
RxRDY
BUSY
OPDET
SCLK
RxD
TxD
TxEN
OSX
OSR
OSYNC
OCK2M
RESET
OUT1
AD5
AD6
KEYIN7
AD0
AD1
KEYOUT0
KEYOUT1
KEYOUT2
KEYOUT3
KEYOUT4
KEYOUT5
KEYIN1
KEYIN2
KEYOUT7
KEYOUT6
KEYIN0
KEYOUT2
KEYIN7
TxD
TO SIDE OPTION
T
O
LCD
(1)
(3)
35
KX-T7636RU-B
(22)
(23)
(24)
(25)
1/4
2/4
3/4
4/4
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
(k)
(m)
(n)
(p)
(q)
(r)
(s)
(t)
(u)
(v)
(x)
(w)
KX-T7636RU-B MAIN
AND SUB BOARDS (3/4)
C79
Z0.1
DG
C80
Z0.1
C86
Z1
DG
DG
R80
22
L
R63
5.6K
DG
R70
1.8K
C87
Z1
L7
R68 1.2K
R62
8.2K
T1
4
59
10
1
26
7
H
L6
R64
12K
Q2
3
5
1
2
4
R87 270
C74
1000P
R60
1.8K
R61
1.8K
C75
1000P
C85 Z0.1
R85
1.2K
R86
1.2K
DG
R65 5.6K
C83 Z0.1
D3.3V
R67
10K
C84
Z0.1
DG
R66 6.8K
DG
R69 4.7K
R82
4.7K
DG
R92 560
R93 330
D3.3V
DG
C99
50V Z1
D3.3V
D3.3V
D3.3V
DG
R83
100
C98
50V Z1
R96
330
R95
560
DG
D3.3V
Q10
E
C
B
R98
1K
C104
Z1
DG
R
T
JK3
1
H
2
R
3
T
4
L
DG
6.3V100u
C93
50V Z0.1
C106
D3.3V
D3.3V
2.7K
R90
22K
R102
50V100u
C107
Z0.1
C94
1.2K
R91
Z0.22
C102
Z0.01
C105
Z0.1
C101
330u
L5
D5
1
3
2
4
DG
IC6
1
Vcc
2
FB
3
IN
4
GND
5
GND
6
REF
7
CS
8
OUT
L8
L9
C97
Z0.1
DG
C91
1000P
C92
1000P
C58
Z0.1
A3.3V
D3.3V
Q8
1
4
3
5
2
AG
C44
Z0.22
A3.3V
DG
C54
Z0.01
L4
3.3
6.3V100u
C88
A3.3V2
JK2
A
H
T
R
L
B
R81
22
R84
100
R100
10
R101 10
C100
Z1
DG
C103
50V Z1
R88
8.2K
R41
47K
R45
47K
R40
47K
R42
39K
R36
33K
C48
Z0.1
C47
Z0.1
C66 Z0.1
C73
Z0.1
DG
Q14
1
4
3
2
5
6
R97
27
R99
5.6
R89
5.6K
DG
D3.3V
R47
10K
R46
220
C56
0.1
C53
0.1
R43
5.6K
DG
C68
B
A
C51
0.1
A3.3V
GND
R49
1K
R50
1K
R35
1K
R51
1K
AG
NC
C60
NC
C61
NC
C45
NC
C62
DG
DG
DG
R48
180
C46
Z10
D4
Q15
E
C
B
AG
CN13
1
A(UK)
2T
3R
4
Q9
1
2
3
4
5
6
C50
Z10
C49
Z10
R38
47K
D3.3V
PN9CLK
R108 120
A3.3V
AG
IC5
OEP/PN9CLK
30
PVSS
5
PVDD
6
CK8M
77
RIN
7
PLLO
9
RSTN
100
PVRH
69
PDX1
71
PDX0
70
DVRL
60
OP7
58
OP6
57
PEP/SCLK
54
PCM2M
53
PSR
52
PSX
50
DDX0
63
DDX1
64
DVRH
62
DDR
61
SPOP
44
SPON
45
SPI
46
PDRL
67
PDR
68
AD0
88
AD1
87
AD2
86
AD3
85
AD4
84
AD5
83
AD6
82
PLLI
8
GND
10
VREF0
43
AV
D
D
47
AG
42
PSYNC
51
CK16M
76
VDD
17
VDD
29
VDD
41
VDD
59
VDD
66
VDD
81
VDD
89
GND
18
GND
40
GND
48
GND
65
GND
78
GND
90
C72
Z0.1
C76
Z0.1
C81
Z0.1
C110 Z0.1
C71
Z0.1
R1
16
15K
R1
17
0
DG
6.3V100u
C59
C
111
4V330u
NC
C89
NC
C90
IC10
Vo
u
t
1
Vi
n
2
Vss
4
NC
3
R1
18
1M
R119
220K
C96
100P
C95
100P
C63
12P
DG
C1
18
Z0.1
R124
1M
R127
10
NC
C52
1
R133
A3.3V
DG
AG
AD0
AD1
AD2
AD3
AD4
AD5
AD6
CLK
D
ATA
CS
CS
OPDET
T
O
PBX
T
O
DPT/SL
T
T
O
XDP
for KX-T7636E
NC
(4)
(9)
(1)
(8)
(5)
36
KX-T7636RU-B
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