Read Panasonic KX-TCD225UA / KX-TCA122UA / KX-TCA121UA Service Manual online
39 SCHEMATIC DIAGRAM (BASE UNIT)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(13)
(14)
(15)
(16)
25mV p-p
0V
0.7V
C_ID, Bell Signal
7.8V
2.1V
0.3V
3.3V
0.35V
0.97V
3.3V
(When no Beep)
Beep Signal
Charge Terminal
K1500P
C12
1M
R17
32K
1
A0
2
A1
3
A2
4
VSS
5
SDA
6
SCL
7
WP
8
VCC
CN1
DC/TEL_JACK
1
2
3
4
5
6
F200
R9
(1005)
6.3V330
C3
F120
R8
(1005)
K1500P
C13
C2
16V100
3
ADJ
2
VOUT
1
VIN
4
VOUT
1M
R16
22 (6332)
R3
22 (6332)
R5
RLY1
NC
1
2
3
4
7
8
9
10
R56
2.2K
(1005)
R57
2.2K (1608)
+8V
D1
K0.1
C53
(1005)
D3
R105
10K
(1005)
R106
180K
R107
180K
C101
K1000P
C102
K1000P
SA1
C1
D10P
C114
C2P
(1005)
C107
K1000P
C119
K2.2 (2125)
D6
22V
1
IN/OUT1
2
OUT/IN1
3
CONT2
4
GND
5
IN/OUT2
6
OUT/IN2
7
CONT1
8
Vcc
C43
J27P
(1005)
C42
D6P
X1
10.368MHz
C167
18
(2125)
C171
K1000P
R138
27
(3216)
C172
J100P
(1005)
CN14
Q15
R139
470
(1005)
+2.5V
+2.5V
VDD3
TP15
TP16
D16
+2.5V
+3.3V
L2R
L2T
L1R
L1T
DCM
DCP
Q16
1.2K
R142
(1005)
15K
R141
(1005)
R140
1K
(1005)
C174
K0.1
(1005)
180
R143
C29
D10P
C25
D10P
(1005)
C26
J22P
(1005)
C8
D10P
R37
18
(2125)
BUZ
C170
NC
(1005)
NC
D2
J2
NC (2125)
NC (2125)
J7
NC (2125)
J3
NC (2125)
J1
NC (2125)
J5
Q1
NC
680P
C15
680P
C14
L7
33 H
L6
33 H
C180
10P
C181
10P
NC
R144
(1005)
C206
10P
(1608)
R40
(1608)
3.3M
C187
NC
C189
NC
C182
10P
R67
NC
R68
NC
C74
NC
D11
NC
D12
NC
100K
R69
100K
R70
SA2
C212
NC
C200
NC
C213
D10P
(1608)
C75
10P
C205
(1005)
NC
NC (6332)
R4
R81
12K
(3216)
C80
250V0.47
(5750)
D14
0
D15
0
Charge +
Charge -
IC1
IC7
IC3
EEPROM
NC : No Components
106
KX-TCD225UA / KX-TCA122UA / KX-TCA121UA
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