Panasonic KX-TG3531BXS Service Manual page 85

(1)
3.3 V
IC331
(2)
VOUT VIN
5 4
NC2 VDET
6 3
GND *RESET
7 2
CD NC1
8 1
(3)
(4)
(5)
(6)
(7)
RX
120 mVp-p
R172 100k
C172
K2700P(50V)
(8)
E
B
C
Q171
C174
C167 R167
NC K0.22 1k
(9)
(10)
(11)
(12)
R183 C185 R185
(13)
2.2k K0.018 33k
(14)
(15)
(16)
4.0 V
4.0V CONVERTOR
Q300
L300 22uH
IC300
1 ON/*OFF 5
VIN
2
VSS
3 4
VOUT
EXT
DCDC_IC
RF_GND DIGITAL_GND
TX
800 mVp-p
C
B
E
Q161
*Q156
NC
*R162
C
R164 C163 B
39k
E
47 K4700P(50V)
TX
80 mVp-p
KX-TG3531/3532BX SCHEMATIC DIAGRAM (Base Unit_Main)
KX-TG3531BXS/KX-TG3531BXB/KX-TG3532BXS/TG3532BXB/KX-TGA351S/KX-TGA351B
CHARGE+(2)
CHARGE PAD
L371
NC
CHARGE-(2)
R342 NC
Power failure detection
Q143
NC
Q141
C141 NC
R141 100k
C101
680p(3216)
C
B
3
E
Q142
4
D101
C102 680p(3216)
R115
C115
NC
R121 390k C121 K680P(50V)
R122 390k
C122 K680P(50V)
CID
Q111
E
B
C
Bell detection
85
REFERENCE
1XX : TEL LINE
3XX : POWER, CHARGE
4XX : RESET, MIC, SP
5XX : DSP, RF I/F
6XX : FLASH, KEY, LCD
7XX : RF(2.4G)
8XX : RF(5.8G)
11~13 V
CHARGE+
DCP DCP2
1
CHARGE-
2
CN301
DCM DCM2
E
B
C
Q340
NC
L1T
RX
L101
CN101
2 33u
1
2
1
L102
TEL JACK
33u
P101 22
L1R
NC
TX
Test Signal
Frequency: 1 kHz
Rx
(MIC Mute: ON)
-25 dBm/600
100 mVp-p
Tx
-10 dBm/600
700 mVp-p
NC: No Components
IN