Panasonic KX-TG2344B Service Manual page 109

(1)
(2)
D305
NC
(3)
VOUT VIN
D301 5
NC VDET
6
NC
GND RESET
7
Cd
8
IC300
(4)
(5)
D304 NC
(6)
C447
K0.022
(7) RA401
2.2K
C448
2 1
4 3
K0.022
(8)
R170
C154
220
R152
82K
R127 C151
C155
(9)
1K K0.047 2700P
Q150 C158 R155
K0.22 1K
C156
(10)
(11)
DA101
1 3
(12)
R123
2
(13)
C144
(14)
33K
K0.1
(15) L401
6.8µ
(16)
L402
(17)
6.8µ
(18)
(19)
(20)
(21)
(22)
4.0V
4.0V CONVERTOR
300kHz (or 500kHz)
4.0V output
Q301
S
G
L302 D
22uH
4
3
2
NC
1
MIP
R350
NC
MIN
INTERCOM TX
-50dBm IN
Q161
C171
R162
R163 NC
C163
39K
47 K4700p
INTERCOM RX
-10dBm OUT
SPN
SPP
SP
L301
NC
D381
R381
3.3K
R382
Q381
Q382
4.7K
C353
K0.01
Q350
R354
100
Q351
Q353
Q104
Q114
Q103
R139
4.7K
Q107
C120 NC
C121 NC
Q106
KX-TG2344B SCHEMATIC DIAGRAM (BASE UNIT)
109
KX-TG2344B / KX-TGA234B
CHARGE PAD
L377
CP
6.8u
L376
CM
6.8u
RX T/R
-20dBm IN
TX T/R
DGND AGND
-16.5dBm OUT
DCP1 DCP2 DCM1
AG PAG DG
Q570 RFG
R571
12K
D306
L101
680p (3216)
C101
33u
D101
3 2
4 1
C102 L102 P101
33u
680p(3216)
22
R114 C111
390K K680P
R115 C112
390K
K680P
C116 R130
K0.15
100K
C117 R131
K0.15
100K
DCM2
CN101
1 +9v
2 GND
3 T
4 R
L1R
L1T