KX-TCD500RUN, KX-TCA150RUN - Panasonic Telephone Service Manual (repair manual). Page 73

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4700p
C36
10
/50V
C49
IC3
1 A0
2 A1
3 A2
4 VSS
5
SDA
6
SCL
7
WP
8
VCC
820
R54
Q8
27K
R42
0R
R52
0.1u
C24
C35
N
.M.
8.2K
R43
1.8k
R44
100K
R47
47K
R48
1 /10V
C46
C52
NC
0.22u
C47
56R
R49
12R
R45
2.2
/10V
C40
27R
R46
CN6
DC_IN
1
CN7
TX
1
CN8
GND
1
56R
R39
0.22u
C41
TP26
TP31
R34
0R
C43
12p
R56
10K
R57
10K
C42
30p
C30
0.068u
0.1u
C37
1u
C39
0.1u
C44
1u
C33
0.1u
C45
CN4
DB111G
+5.5V
R59 10k
Q6
N.M.
N.M.
R31
N.M.
R35
TP29
N.M.
C31
N.M.
R37
N.M.
R36
C25
N.M.
0.1u
C48
1u
C34
C28
0.22u
C51
100p
SW1
R40
N.M.
0.1u
C53
L1
4.7u
C63
33p
Q10
R62
1K
D5
C60
100p
R65
3
9R
DA1
1
3
2
C64
1p
C59
3p
C62
3
p
R60
22R
R61
22R
C57
10p
C58
10p
ANT1
1
ANT2
1
IC2
1
VDDIO
2
VSS
3
AD8
4
AD9
5
AD10
6
AD11
7
AD12
8
AD13
9
AD14
10
P3[7]/PD7
11
P3[1]/PD1
12
P3[5]/PD5
13
P3[4]/PD4
14
P3[3]/PD3
15
P3[2]/PD2
16
VDD
17
VSS
18
RFCLK
19
VDDRF
20
VSSRF
21
Xtal1
22
CAP
23
AVS
24
AVD
25
RSSI
26
RDI
27
CMPREF
28
TDO
29
AD15
30
AD16
39
SO
40
SK
41
DAC/ADC2
42
P3[6]/PD6
43
RDN
44
WRN
45
MI/READY
46
SCLK
47
UTX/P0[0]
48
URX/P0[1]
49
JTIO/P0[2]
50
PCM_FSC1/P0[3]
51
PCM_FSC0/P0[4]
52
PCM_CLK/P0[5]
53
PCM_DOUT/P0[6]
54
PCM_DIN/P0[7]
55
VDDIO
56
VSS
57
DREQ0n/INT0n/P1[0]
58
DACK0n/INT1n/P1[1]
73
DAB10
74
DAB3
75
DAB11
76
VSS
77
VDD
78
VDDIO
79
P2[0]/PWM0
80
P2[1]/PWM1
81
P2[2]/ADC0
82
P2[3]/ADC1
83
P2[4]/SCL1
84
P2[5]/SDA1
85
DAB4
86
DAB12
87
DAB5
88
DAB13
89
DAB6
90
DAB14
91
DAB7
92
DAB15
93
P2[7]/DC_CTL
94
DC_I
95
P1[6]/PON/INT6n
96
P1[7]/CHARGE/INT7n
97
P2[6]/stop_charge
98
VBAT3/RINGING
99
DC_stab
100
DC_sense
101
AVS_sense
102
ADC3
109
AVD2
110
LSR+/REF
111
LSR-/REF
112
LSR_HS/CIDIN-
113
VREF_HS/CIDOUT
114
MIC-
115
VREF-
116
VBUF
117
AGND
118
MIC+
119
VREF+/CIDIN+
120
RSTn
121
AD0
122
AD1
123
AD2
124
AD3
125
AD4
126
AD5
127
AD6
128
AD7
72
DAB2
71
DAB9
70
DAB1
69
DAB8
68
DAB0
67
SDA2
66
66:SCL2/P3[0]
65
65:BE0n
63
VDDE/HOLDACKn/INT5n/P1[5]
62
HOLDn/INT4n/P1[4]
61
ACS2/DACK1n/INT3n/P1[3]
60
ACS0
59
ACS1/DREQ1n/INT2n/P1[2]
104
104:LDO1_CTRL
106
VBAT2
107
VBAT1
108
AVS2
38
LE
37
AD23
36
AD22
35
AD21
33
AD19
105
105:LDO2_CTRL
31
AD17
32
AD18
34
AD20
64
BE1n
103
103:LDO1_sense
C65
0.1u
C71
2p
IC4
5 RSSI
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
GND
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
X1
10.368MHz
CN9
JTAG
1
CN10
RX
1
R87 10K
L3
33N
NC
C85
NC
C86
NC
C83
C84
2p
R86 10K
R88 10K
R85
0
R91
180
R92
180
C72 5600P
C82
2p
TP18
TP16
Q7
N.M
.
R101
10K
C100
10p
0.082u
C38
R100 10K
C73
4.7u
C104 6P
100k
R38
R111
10k
TP40
TP41
TP42
TP43
TP44
TP45
TP46
TP47
TP48
C108
2.2u/10V
C109
1u/10V
TP17
0.022u
C32
R33
N.M.
NC
C111
NC
C112
R112 0
D7
4.7V
D8
4.7V
D9
4.7V
C105
10P
NC
C115
NC
D10
470k
R72
D11
D12
D13
+3.0V
+3.0V
C113
1000p
R113
22k
C55
22p
2.2K
R53
10k
R51
R84 1k
R64
1k
R55
1k
C121
100p
C122
100p
C123
100p
C54
4.7u
C128
100p
C120 1000p
10p
C131
C129
10p
C130
10p
Q9
10R
R50
NC
C50
100K
R71
0.1
C76
D4
MA1Z300TX
RFCLK
RSSI
RDI TDO
LE
SO
SK
DAB7
DAB6
DAB5
DAB4
DAB3
DAB2
DAB1
DAB0
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7 AD8 AD9 AD10 AD11 AD12 AD13
AD14
RE
WE
ACS0
ALE
CLE
ACS1
RXDSG
PAON
ANT2
ANT1
RFCLK
AD17
DAB8
DAB9
DAB10
DAB11
DAB12
DAB13
DAB14
DAB15
P3[6]
ANT2
PAON
RDI
RXDSG
LE
SO
SK
ANT1
TDO
R/B
RSSI
AD16
AD15
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
: No Components
KX-TCD500RUN:  SCHEMATIC DIAGRAM (BASE UNIT)
RX_AF (When OFF-HOOK)
   Caller waiting
   Audio
   SMS (RX)
Loop Current
TX_AF 
   Audio
   SMS (TX)
Beep signal
7V  (When No Beep)
3.0V
0V
RX-DATA
10.368MHz burst
TX-DATA
4.2V
3.0V
0V
1.9V 0V
1.9V 0V
0V 1.8V
0V
1.8V
3.0V
3.0V
0.9V
3.9V
3.5V
4.1V
0V
0V
1.8V
0.9V
3.0V
0V
840mV p-p
10.368MHz
73
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