Panasonic KX-TG7841S Service Manual page 75

KX-TG7841/KX-TG7842/KX-TG7843/KX-TG7844/KX-TG7845/KX-TG365SK/KX-TG7871/KX-TG7872/KX-TG7873/KX-TG7874/KX-TG7875/KX-TG385SK/KX-TGA680
R160
820
TP9
C173
0.1u
Rx
TP10
Tx
(1)
C174 2200p
C172 NC
R125 270
CIDOUT/MICn
24
RA101 1k
CIDINn/MICp
23
4
VREFp
22
CIDINp/P3_2
21 3
RINGp/P3_7
20
RINGn/P3_6
19
RINGOUT/RINGING/P3_5
R121 1k
18
PARADET/P3_4
17
P4_4
16
P4_1/SPI2_CLK
15
P4_0/SPI2_EN
C504
IC501 14
VDD1
13 C503
RF_SUPPLY1
C502
12
AVD_XTAL
11
XTAL1
10
XTAL2
9
AVS_XTAL
R501
8
REF_RES
R891
7
RFP0
6
RFP1
5
VSS_LNA2
4
RF_RXp
3
RF_RXn
2
VSS_LNA1
1
(2)
R892
C514 NC
+2.4V
VDD2
C515 NC
Q302
+3.0V
(3)
+3.0_CP
D610
(4)
RA611
3.3k
C610
1u
EEP_WP
(5)
SCL2
(6)
SDA2
(7)
KX-TG7841/7842/7843/7844/7845/365/7871/7872/7873/7874/7875/385 SCHEMATIC DIAGRAM (Base Unit_Main)
Q161
C
B
E
C163 NC
R164 R161
2.7k 100k
R151
100k
C184
1u
+1.8V
VDD1: 1.8V
+3.0V
VDD1
Q301
C109
820p
R109
BELL
82k
R111 3.9k
C113
0.082u
1
2
0.1u
10p
1u
C520 NC
56k
3 1
220
10.368M
X501
2
VSS/GNDplane16
132
VSS/GNDplane15
131
VSS/GNDplane14
128
VSS/GNDplane13
127
VSS/GNDplane12
124
VSS/GNDplane11
114
VSS/GNDplane10
113
ANT1
VSS/GNDplane9
112
VSS/GNDplane8
106
RF_RXp
VSS/GNDplane7
105
RF_RXn
VSS/GNDplane6
104
VSS/GNDplane5
103
VSS/GNDplane4
102
RF_TXp
VSS/GNDplane3
99
RF_TXn
VSS/GNDplane2
220 98
ANT2
VSS/GNDplane1
97
VDD2: 2.5V
VDDIO
122
+3.0_CP
QSPI_CS
QSPI_IO1
QSPI_IO2
Q141
R141
100k
Q155 Q142
NC
C
B
E
C107 C103
R103 R101
4.7M
0.01u 180k 0.01u
R105 1M C105 680p
C108 C104
R104 R102
180k 4.7M
0.01u 0.01u
R106 1M
C106 680p
+3.0V
CHARGE_DET
Q702
Caller ID
LCD_CS
SPI2_CLK
EEP_WP
+3.0V
IC501
VBAT
110
ULP_XTAL
117
ULP_VBAT
116
ULP_PORT
118
ULP_MAIN_CTRL
115
QSPI_SCK
QSPI_SCK
QSPI_IO3
120
QSPI_IO3
QSPI_IO2
119
QSPI_IO2
QSPI_IO1
123
QSPI_IO1
QSPI_IO0
126
QSPI_IO0
QSPI_CS
121
QSPI_CS
125
LCD_CD
P5_7
LCD_RST
130
P5_6
PDN_DET
129
P4_3/SPI_DI
SPI2_DO
101
P4_2/SPI2_DO
100
DC_SENSE
107
DC_I
108
DC_CTRLN
111
DC_CTRL
109
PDN_DET
IC502
16M FLASH
1 8
*CS VCC
QSPI_IO3
SO/SIO1
2 7
NC/SIO3
QSPI_SCK
3 6
*WP/SIO2 SCLK
QSPI_IO0
4 5
GND SI/SIO0
75
REFERENCE
1XX : TEL LINE
3XX : POWER, CHARGE
4XX : MIC, SP
5XX : BBIC
6XX : FLASH, EEPROM, KEY, LCD
7XX : FOR DK/BT
8XX : RF
C101 680p
D101
1 2
4 3
C102 680p
P101
C115
1
NC
@GAP-1
R115
2
NC
5.5V
!
+5.5V
+5.5V
F301
3.0A
Q701
CHG+
R701
3.3k
VDD3: 3.0V
VDD3
+3.0V
IC302
2 3
OUT1 IN
4
OUT2
ADJ
1
Power Supply
from Hnadset
CHG+
Q351
+5.5V
+1.8V
Q352
Q353
Q354
HAK_CL1
PNLB2156ZA-GW
GND
NC: No Components
L1T
(YELLOW)
L1R
(GREEN)
22
DCP
DCM
CHARGE+
CHARGE-
+5.5V
PCB
RE1