Panasonic KX-TCD220SLT Service Manual page 103

LINE_DC
Q4
(1)
R23
100K
R79
Q12
Q5
R28
NC
NC
2.2K
(2)
(3)
(4)
(5)
(6)
(1005)
C22
K220P
R27
100K
(1005)
(1005)
C17
K220P
R22
100K
(1005)
(7)
(8)
(9)
VDD2
(1005)
C34
K0.1
(10)
1 INT1n/P1[1]
2 VDDIO
C37
3 VDD
(11) (1005) K0.1
4 VSS
5 SDA1/P2[5]
IC8
(12)
6 SCL1/P2[4]
7 INT5n/VDDE/P1[5]
BBIC
(13)
8 INT2n/P1[2]
C44
9 AVD
(14) K0.1
(1005) 10 AVS
49:LDO1_Sense
11 CAP
(15)
32:PCM_FSC/INT0n/P1[0]
12 Xtal1
(16) 13 VSSRF
14 RFCLKp
15 RSSI/RFCLKm
16 VDDRF
SW1 LOCATOR
Loop Current
TP9
RX_AF
+3.3V
Bell signal
(1005)
C32
K0.022
R38
100K
(1005)
+1.8V
VDD1
Q3
+2.5V
Q2
LDO2_CTRL 48
LDO1_CTRL 47 (1005)
VBAT1 46
R85 3.3K
RSTn 45 C28 K0.22
P1[7]/CHARGE/INT7 44
P2[3]/ADC1 43
C48
VDD 42
VSS 41 K0.1 (1005)
P0[7]/SPIDI/PCM_DIN 40
P0[6]/SPIDO/PCM_DOUT 39
P0[5]/SPICLK/PCM_CLK 38
P0[4]/SCL2 37
P0[3]/SDA2 36
P0[2]/JTIO 35
P0[1]/URX 34
P0[0]/UTX 33
+3.3V
Q14
R52
390
(1005)
Q8
C130
R50
NC 10P
R49
R44 R47 C46
K1.0
100K
1.8K 56
(2125)
R71
100K
TX_AF
+2.5V
R39
TP10
18
J9
3.3V
NC
(2125)
Q6
+2.5V
R123
RSSI
0
(1005)
R124
RFCLK
0
(1005)
LE
SK
RDY
RESET
+2.5V
TP19
TP21
TP20
TP22
KX-TCD220 SCHEMATIC DIAGRAM (BASE UNIT)
103
KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT
ANT_2
ANT_1
DA1
1 3
2
R121
R120
NC
NC
L3
33nH
C138
NC
A_1
A_2
C137
ANT
NC
GND
1 GND 24
GND
2 ANT2 23
GND
3 VCCPA IC2 22
ANT1
4 GND 21
RESET
5 GND 20
RF_UNIT
GND
6 VCC_OC 19
TXDA 18
7 GND
8 RSSI GND 17
CLK
R125
0
(1005)
10.368MHz
RX DATA
+2.5V
+3.3V
+8V
J101
R133
J104
330
(1005)
R84
TP23
100
R64
J103
1K
R55
J102
1K
(1005)
NC : No Components
R117
1K
(1005)
RESET
TX DATA
R127
TDO
100
(1005)
SIO
2.5Vp-p
IC5
1 32
RDY/BUSY NC
2 31
RESET NC
3 30
WP NC
4 29
NC NC
5 28
NC NC
6 27
NC NC
7 26
VCC NC
8 25
GND NC
9 24
NC NC
10 23
NC NC
11 22
NC NC
12 21
NC NC
13 20
CS NC
14 19
SCK NC
15 18
SI NC
16 17
SO NC
FLASH