Read Panasonic KX-TCD225UA / KX-TCA122UA / KX-TCA121UA Service Manual online
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(14)
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RX_AF
Loop Current
Bell signal
TX_AF
TX DATA
RX DATA
2.5V
+1.8V
+2.5V
2.5Vp-p
10.368MHz
Q4
10P
C36
(1608)
100K
R23
50V10
C49
K0.1
C50
820
R54
(1005)
Q8
27K
R42
2.2K
R28
Q5
470
R52
(1005)
10K
R26
2.7K
R25
(2125)
30V
D4
K0.1
C24
(1608)
8.2K
R43
(1005)
2.2K
R44
100K
R47
47K
R48
K1.0
C46
(2125)
K0.056
C47
(1608)
56
R49
12
R45
(4532)
K2.2
C40
(2125)
27
R46
(4532)
18
R39
K0.056
C41
(1608)
+8V
C109
K1.0
(1608)
100K
R71
470K
R72
R84
100
R64
1K
R55
1K
(1005)
C76
K0.047
R22
100K
(1005)
C17
K220P
(1005)
1 INT1n/P1[1]
2 VDDIO
3 VDD
4 VSS
5 SDA1/P2[5]
6 SCL1/P2[4]
7 INT5n/VDDE/P1[5]
8 INT2n/P1[2]
9 AVD
2 VDDIO
3 VDD
4 VSS
5 SDA1/P2[5]
6 SCL1/P2[4]
7 INT5n/VDDE/P1[5]
8 INT2n/P1[2]
9 AVD
10 AVS
11 CAP
12 Xtal1
13 VSSRF
14 RFCLKp
15 RSSI/RFCLKm
16
11 CAP
12 Xtal1
13 VSSRF
14 RFCLKp
15 RSSI/RFCLKm
16
VDDRF
17
RFCLKd
18
TDO
19
RDI
20
SK
21
PD1/SIO
22
LE
23
P3[1]/PD1
24
P3[2]/PD2
25
P3[3]/PD3
26
P3[4]/PD4
27
TDOD/P3[5]/PD5
28
P3[6]/PD6
29
VSS
30
VDDIO
31
VDD
32
32:PCM_FSC/INT0n/P1[0]
33
P0[0]/UTX
34
P0[1]/URX
35
P0[2]/JTIO
36
P0[3]/SDA2
37
P0[4]/SCL2
38
P0[5]/SPICLK/PCM_CLK
39
P0[6]/SPIDO/PCM_DOUT
40
P0[7]/SPIDI/PCM_DIN
41
VSS
42
VDD
43
P2[3]/ADC1
44
P1[7]/CHARGE/INT7
45
RSTn
46
VBAT1
47
LDO1_CTRL
48
LDO2_CTRL
49
49:LDO1_Sense
50
AVS2
51
AVD2
52
CIDINn
53
LSRn/REF
54
LSRp/REF
55
RINGING
56
MICn/CIDOUT
57
VREFm
58
AGND
59
MICp
60
CIDINp
61
P1[4]/INT4n
62
P1[3]/INT3n
63
ADC2
64
ADC0
C30
K0.1
R27
100K
(1005)
C22
K220P
(1005)
R38
150K
(1005)
C32
K0.022
(1005)
C38
K0.1
(1005)
Q2
Q3
R85
3.3K
(1005)
C28
K0.22
C11
K1.0
C7
K1.0
SW1 LOCATOR
C34
K0.1
(1005)
C37
K0.1
(1005)
C44
K0.1
(1005)
C39
K1.0
C65
K0.1
(1005)
C45 K0.1
(1005)
C48
K0.1 (1005)
K0.1 (1005)
R32
100
C27
D10P
(1005)
R24
100
C21
D10P
(1005)
R88
10K (1005)
R86
1K (1005)
R87
10K (1005)
C122
J100P (1608)
C123
J100P (1005)
D13
R132
10K
(1608)
R134
1K
(1608)
R135
10K
(1005)
R137
10K
(1005)
R136
10K
(1005)
C140
10P
J22P
C153
(1005)
C144
D10P
D10P
C156
(1005)
C2P
C155
(1005)
C163
D10P
(1005)
DA1
1
3
2
C143
D10P
ANT_1
1
RF_UNIT
1 GND
2 ANT2
3 VCCPA
4 GND
5 GND
6 VCC_OC
7 GND
8 RSSI
2 ANT2
3 VCCPA
4 GND
5 GND
6 VCC_OC
7 GND
8 RSSI
9
SYRI
10
GND
11
GND
12
SYEN
13
SYDA
14
SYCL
15
GND
16
RX_DATA
17
GND
18
TXDA
19
GND
20
RESET
21
ANT1
22
GND
23
GND
24
GND
25
GND
26
GND
27
GND
28
GND
29
GND
30
GND
31
A_1
32
GND
D7P
C157
(1005)
C162
D10P
(1005)
C141
C3P
ANT_2
1
D10P
C154
(1005)
C159
C2P
(1005)
D10P
C158
(1005)
C161
C2P
(1005)
C160
D10P
(1005)
16V10
C5
R124
0
(1005)
R125
0
(1005)
R123
0
(1005)
R127
100
(1005)
C142
D10P
C151
K4.7
C173
D10P
(1005)
+2.5V
+2.5V
+2.5V
+2.5V
TP21
TP22
TP19
TP20
TP9
TP10
VDD1
VDD2
J101
J104
TP23
J103
J102
CLK
+3.3V
+3.3V
R119
270
R118
270
ANT
LINE_DC
L3
33nH
R117
1K
(1005)
J150P
C164
(1005)
K1000P
C136
(1005)
C138
NC
L4
0
Q6
K1.0
C135
(2125)
C6
D10P
J9
NC (2125)
NC
C166
(1005)
NC
C165
(1005)
C150
NC
C19
NC
C137
NC
C35
NC
C52
NC
C18
NC
C121
NC
(1005)
D10
NC
D5
NC
D18
NC
J11
NC
470
R116
(2125)
2.2K
R115
R122
NC
(1005)
R120
NC
R126
NC
(1005)
R121
NC
NC
R59
NC
R58
A_1
A_2
16V10
C4
+3.3V
C184
10P
C191
10P
C192
10P
C194
10P
C195
10P
NC
R50
L8
100nH
C199
10P
C145
10P
C134
NC
C149
10P
C203
10P
(1005)
C204
NC
(1005)
C130
10P
C208
10P
C207
10P
L9
C201
10P
(1005)
C198
10P
(1608)
C190
NC
C168
NC
C209
NC
C139
5.6nH
C133
8.2nH
K4700P
C215
C214
10P
(1005)
C193
10P
(1005)
1
RDY/BUSY
2
RESET
3
WP
4
NC
5
NC
6
NC
7
VCC
8
GND
9
NC
10
NC
11
NC
12
NC
13
CS
14
SCK
15
SI
16
SO
17
NC
18
NC
19
NC
20
NC
21
NC
22
NC
23
NC
24
NC
25
NC
26
NC
27
NC
28
NC
29
NC
30
NC
31
NC
32
NC
R130
10K
(1608)
R133
330
(1608)
C197
10P
C196
10P
Q14
L10
100nH
R129
680
D17
C183
C7P
(1608)
C169
K0.1
Q12
R80
10
(3216)
R78
10K
R79
680
J10
0
C147
NC
C146
K0.1
C108
NC
(2125)
RSSI
TDO
RDI
SK
SIO
LE RESET
RDY
RDI
SIO
TDO
RFCLK
LE
SK
RSSI
RFCLK
RESET
RDY
RESET
RF Module
For TCD220/320
DC_IN
GND
JTAG
RX
TX
IC8
BBIC
IC2
IC5
FLASH
KX-TCD225 SCHEMATIC DIAGRAM (Base Unit)
NC : No Components
107
KX-TCD225UA / KX-TCA122UA / KX-TCA121UA
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