Read Panasonic KX-TCD435RU / KX-TCD437RU / KX-A143RU Service Manual online
IC2
1
VDD
2
VSS
3
DRON
4
RXDSG
5
RXDA
6
SYEN
7
SYDA
8
SYCL
9
TXDA
10
PAON
11
SYRI
12
VDD
13
VSS
14
RESETQ
15
VDDPM
16
VSSO
17
LOAD
18
XTAL
19
VDDLR
20
LRB
21
VDDA
22
VSSA
23
AON
24
AOP
25
BREF
26
DLP
27
DLN
28
AIN
29
ADREF
30
ADRSSI
31
AD2(MPCINP)
32
AD3
33 PX.0
34 PX.1
35 PX.2
36 PX.3
37 VDD
38 VSS
39 SUPEEP
40 I2DAT
41 I2CLK
42 MODE
43 R2
44 R1
45
34 PX.1
35 PX.2
36 PX.3
37 VDD
38 VSS
39 SUPEEP
40 I2DAT
41 I2CLK
42 MODE
43 R2
44 R1
45
45:VBACK/P1.5
46
46:VSS(DSPCLK)
47
47:P1.4(TONE)
48 VDD
49
DSPIN/P1.0
50
DSPOUT/P1.1
51
DSPCLK/P1.2
52
DSPFRM/P1.3
53
VSS
54
VDD
55
P0.0
56
P0.1
57
P0.2
58
P0.3
59
P0.4
60
P0.5
61
P0.6
62
P0.7
63
ANT1
64
ANT2
Q8
C32
J27P
C33
C1P
C25
6.3V10
C24
K0.1
C23
K0.1
C37
K0.1 C36
K0.1
C34
K0.1
C30
K1800P
C29
K0.068
C28
K0.068
C26
K0.1
C38
K0.1
C35
K0.033
C43
D10P
K0.47
C12
3.9K
R18
50V10
C15
D10P
C21
100
R31
K0.1
C20
D3
22
R19
TP97
390
R25
470
R28
33K
R22
K0.22
C14
K0.022
C11
56
R20
TP50
Q6
13K
R16
100K
R21
R12
0
56
R23
K1.0
C13
K0.22
C16
56
R32
K0.22
C22
R38
33
+2.65V
IC3
5 RSSI
6 VCC_OC
7 GND
8 SYCL
9 SYDA
6 VCC_OC
7 GND
8 SYCL
9 SYDA
10 SYEN
11 GND
12
RXDSG
13
SYRI
14
GND
15
GND
16
GND
17
GND
18
GND
19
GND
20
RXDA
21
GND
22
GND
23
24
PSEL
25
PAON
26
GND
27
VCC_PA
28
GND
29
GND
30
GND
31
GND
32
GND
33
RF1
34
GND
GND
1
GND
2
GND
3
TXDA
4
VBACK
+2.65V
R57
10K
L1
4.7uH
C48
J33P
R58
10K
+2.65V
R66
39
C57
C3P
R67
39
C55
D10P
A201
1
DA1
C58
C2P
C54
C6P
A202
1
C56
D10P
TP187
TP188
X1
10.368MHz
TP82
TP1
L3
33nH
C69
C2P
C72
C2P
R78
180
R79
180
ANT
C66
C2P C67
K4.7
C73
D10P
D5
C78
D10P
0
C80
R86
0
R88
0
R87
0
C86
0
S1
3
4
2
1
C76
C6P
C27
K0.1
D10P
C50
C82
NC
C70
NC
C71
NC
C79
NC
C83
NC
C84
NC
C85
NC
C87
NC
NC
C9
C51
NC
C81
NC
C10
NC
C17
NC
C8
NC
NC
D6
NC
R13
NC
R17
R35
NC
NC
R15
NC
R14
NC
R11
R36
NC
R55
NC
R56
NC
Q5
NC
Q4
NC
C93
NC
L4
2.7nH
C88
NC
10
R24
2.2K
R27
10K
R26
Q7
BC847B
R33
NC
R52
0
C97
D10P
C94
C0.5P
C68
NC
C98
C0.5P
R90
0
C53
D10P
(13)
(12)
(11)
(10)
(6)
(5)
(4)
(3)
(2)
(1)
(9)
(8)
(7)
GND
KX-TCD435RUB/RUC/RUW& 437RUB/RUC/RUW SCHEMATIC DIAGRAM (BASE UNIT)
: No Components
0V ON-HOOK
DC OFF-HOOK
+9.8V
DC OFF-HOOK
+9.8V
0V ON-HOOK
DC OFF-HOOK
+3.9V
DC OFF-HOOK
+3.9V
RX-AF
TX-AF
+2.65V DC
1V
FREQ 10.368MHZ
TX-DATA
RX-DATA
10.368MHZ burst
peak
+3.1V
+3.1V
89
KX-TCD435RU / KX-TCD437R U / KX-A143RU
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