Read Panasonic KX-TCD755RUS Service Manual online
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C6
470pF
R13
56R
D9
4V7
4V7
C19
10p
+3.3V
R15
390R
ANT202
Antenna
1
2
2
TP103
C122
N.M.
TP3
TP105
TP75
J103
TP4
+2.65V
R25
1K
R44
10K
TP6
C10
10p
TP104
TP202
B0
J100
ANT201
Antenna
C49
10p
TP206
TP101
R64
10K
R29
100R
TP93
C11
10p
TP57
C66
33nF
C8
10pF
TP8
TP205
C38
68pF
D7
4V7
B1
C58
100nF
C56
100nF
C55
100nF
R45
10K
K1
+2.65v
TP107
C7
N.M.
C79
100n
C84
10pF
R2
390R
B2
R61
10K
C51
3p9
R42
100R
C13
10p
C62
100nF
R46
1K8
C63
10pF
TP97
TP82
C43
10p
C53
12pF
+2.65V
R8
2K2
IC5
39VF020-70
10
A16
11
A15
12
A12
13
A7
14
A6
15
A5
16
A4
17
A3
18
A2
19
A1
20
A0
21
D0
22
D1
23
D2
25
D3
26
D4
27
D5
28
D6
29
D7
30
CE
31
A10
32
OE
1
A11
2
A9
3
A8
4
A13
5
A14
6
A17
7
WR
24
GND
8
VCC
9
A18
C64
68n
IC9
8
VCC
1
A0
3
A2
4
GND
6
SCL
5
SDA
7
WP
2
A1
C39
10p
R47
N.M.
C3
470p
R53
100R
C2
10pF
C20
10p
TP117
J104
TP1
J102
C54
10OnF
IC6
I2CLK
64
I2DAT
63
RESETQ
23
MODE
67
VDDA
33
VDD
1
VDD
21
VDD
59
VDD
85
VSSA
34
VSS
2
VSS
22
VSS(T_DSPCLK)
73
VSS
84
PO.0
87
PO.1
88
PO.2
90
PO.3
91
PO.4/TXD
93
PO.5/RXD
94
PO.6
95
PO.7
97
D0
3
D1
9
D2
7
D3
5
D4
92
D5
98
D6
96
D7
11
OERAQ
83
WRRAQ
68
CSRAQ
89
A0
18
A1
16
A2
86
A3
19
A4
70
A5
61
A6
74
A7
66
A8
77
A9
54
A10
14
A11
81
A12
56
A13
75
A14
79
A15
65
PX.2
55
PX.1
53
PX.0
51
PX.3
57
ADRSSI
46
TXDA
15
RXDA
8
DRON
4
RXDSG
6
SYDA
12
SYCL
13
SYEN
10
SYRI
20
ANT1
99
ANT2
100
R2/P1.7
69
R1/P1.6
71
DLN
42
DLP
40
AOP
37
AON
36
LOAD
27
VSSO
25
XTAL
28
PADN(TXSWON)
17
AIN
43
VSS
60
A18
62
A16
52
A17
58
VBACK/P1.5
72
DSPIN/P1.0
76
DSPOUT/P1.1
78
DSPCLK/P1.2
80
DSPFRM/P1.3
82
ADREF
45
AD3
49
AD2/(MPCINP)
48
VDDPM
24
VDDLR
30
LRB
31
BREF
39
NC
26
NC
29
NC
32
NC
35
NC
38
NC
41
NC
44
NC
47
NC
50
TP7
+2.65V
IC1
RFMODULE
25
SYRI
34
PAON
24
DRON
21
RXDSG
20
RXDA
13
TXDA
18
TXDA
37
RF2
44
RF1
11
RSSI
6
3.3V
7
3.3V
2
GND
12
SYRI
17
SYEN
14
SYCL
15
SYDA
1
ANT1
35
ANT2
TP109
J101
R4
100R
+3.3V
C60
10pF
TP108
C9
N.M.
C4
100n
X1
10.368MHz
TP201
TP119
R62
18K
R16
1K0
C57
100nF
TP98
D16
BUZ1
2
1
C80
100pF
T6
E
C
B
A[6]
A[18]
A[6]
RXAF
A[17]
A[3]
A[1]
A[14]
A[5]
A[00-17]
A[18]
PULSE_DIAL
MODE_SEL
MODE_SEL
MODE_SEL
A[9]
A[0]
A[7]
A[11]
A[17]
A[13]
A[0]
A[15]
A[13]
DTXAF
DTXAF
A[7]
SDA
A[16]
A[2]
A[10]
A[5]
A[15]
TXAF
SCL
A[11]
A[1]
A[2]
A[3]
A[2]
A[3]
A[17]
A[12]
A[8]
A[4]
VUNREG
A[8]
A[12]
DTXAF
DTXAF
A[10]
A[14]
A[4]
A[9]
GND
H2
Z3
H3
PAGE
Z2
Z1
H1
Hardware Version Resistor
Z4
FREQ 10.368MHz
1V
KX-TCD755RUS SCHEMATIC DIAGRAM (BASE UNIT)
RXAF
DTXAF
LINE_C
CHARGE_PULSE
DTXAF
LRB
LRB
RX-DATA
TX-DATA
10.368MHz burst
+2.5V peak
70ns 700ms
RING
82
KX-TCD755RUS
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