Panasonic KX-TG5776S Service Manual page 93

4.0V
(1)
IC331
(2)
VOUT
5
NC2
6
GND
7
CD
8
(3)
RX
125mVp-p
(4)
C173
R172
C172
K2700P(50V)
3
2
Q171
C174
(5)
(6)
(7)
(8)
(9)
C185
R183 2.2k
(10)
C183 NC K0.018
(11)
(12)
(13)
(14)
4.0V CONVERTOR
Q300
L300 22uH
VIN
4
VDET
3
*RESET
2
NC1
1
IC300
1 5
ON/*OFF
VIN
2
VSS
3 4
VOUT
EXT
DCDC_IC
RX TX
11mVp-p 800mVp-p
NC
100k
2
1
1 3
Q161
C163
R162
C167 R167 R164 K4700P(50V)
39k
NC K0.22 1k 47
R185 33k
TX
82mVp-p
R365 1k
Q361
R361
2
1
R364 10k
3 3.3k
R362
3 47k
1
Q362
2
Q143
NC
Q141
C141 NC
R141 100k
Q156
NC
2
1
3
2
1
3
Q142
R121 390k C121 K680P(50V)
R122 390k
C122 K680P(50V)
KX-TG5776/5777 SCHEMATIC DIAGRAM (Base Unit_Main)
93
KX-TG5776S/KX-TG5777S/KX-TGA571S
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)
CHARGE PAD
6~10V
CHARGE+
L361
DCP
6.8u
D301 NC
CHARGE-
L371 2 1
NC
DCM
R342 47k
3
1
2
Q340
C101
680p(3216)
L101 33u
3 2
4 1
D101 L102 33u
C102 680p(3216)
P101 22
TEST SIGNAL
FREQUENCY
1kHz
RX
(MIC Mute: ON)
-25dBm/600Ω
Q111
3
1
2
TX
-10dBm/600Ω
OUT
700mVp-p
NC: No Components
DCP2
1
2
CN301
DCM2
L1T
CN101
1
2
TEL JACK
L1R
IN 100mVp-p