Panasonic KX-TG2338BXS Service Manual page 93

D351
(1)
NC
D305
(2)
NC
VCC
VCC 3.3V
D301
(3)
NC
VCCPA 3.3V
D302
(4)
NC
(5)
(6)
(7) CHG_DET
(8) AC_DOWN
CHG_CNT2
CHG_CNT1
R170 C154 NC
220
R152 82K
C155 C158
K2700P
K0.22
Q150
C156 NC
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
4.0V CONVERTOR
300kHz (or 500kHz)
4.0V
L302
22uH
5 VOUT VIN
4
6 NC VDET
3
7 GND
RESET
2
8 Cd NC
1
IC300
Q354
Q161
C171
NC
R162
R155 R157 0 R163
C163
47 39K
4700P
1K
C160 NC
DCIN0
BELL
4.0Voutput
Q301
L301
NC
Q570
R571
12K
Q381
1K
Q382
R387
R382
4.7K
Q351
Q104
Q105
NC
Q103
C120 NC
R114 390K
C121 NC
R115 390K
KX-TG2338 SCHEMATIC DIAGRAM (BASE UNIT)
93
KX-TG2338BXS / KX-TGA236BXS
9~11V
REFERENCE
D381
CHARGE PAD
3.3K L377
CP2 CHARGE+
6.8uH
R381
L376
CM2 CHRGE-
6.8uH
C353
K0.01
Q350
R354
100
D306
C101
DG RFG PAG AG
680p(3216)
D101
L101
3 2
33u
4 1
C102 L102 P101
33u
680p(3216) 22
C111 K680P
C112 K680P
Q106
1XX : LINE
3XX : POWER, CHARGE,
RESET, PDWN DET
X01- :POWER SUPPLY
X21- :CHARGE
X41- :RESET,POW DOWN
4XX : MIC, SP
5XX : DSP, E2PROM
6XX : RF I/F
7XX : FLASH, LCD (TAM)
DCP DCP2
CN101
1 9V
DCM
DCM2
2 GND
3 T
L1T
4 R
L1R
RX T/R
-20dBm IN
TX T/R
-16.5dBm OUT