Panasonic KX-TG4753B Service Manual page 75

VCCA
(1)
(2)
(3)
(4)
+5.5V
*C458
*C457
X501
13.824M
R509NC
(5)
(6) C120
(7)
(8) 1000p
(9)
(10)
(11)
DOUBCAPP1
*IC501
DOUBCAPP
DOUBCAPN
GND
DOUBCAPN1
(12)
C520
0.1u
(13)
(14)
(15)
+3.0V
*IC601
16M FLASH
1 8
*CS VCC
SO/SIO1
2 7
NC/SIO3
*WP/SIO2
3 6
SCLK
4 5
GND SI/SIO0
C601 0.1u
+3.0V
R160
910
Rx
C
E
C165 NC
C173 R177 R164
R172
100k
1k 2.7k
K0.22u
C175 1000p
Q171
C174 NC
C184
NC
K1.0u
NC
R121 390k C121 680p
R122 390k C122 680p
VDDC
*C459
NC
NC
C460
C461
NC
+3.0V
+3.0V
VCCA
R501 10
VREF
C505 10u
22
MIN
VBG
C506
21
VCCA
20
1u
VREF
19
DCIN3/LIN1
18
DCIN2
17
DCIN1
16
DCIN0/LIN0
15
DOUBOUT
14
13
12 C504 1u
11 C521
1u
L501
10
VBAT
9 C501 100n
C502
COREOUT
8 10u 0.1u
VDDC2
7
GPIO[26]
6
GPIO[25]
5
GPIO[24]
4
GPIO[23]
3
GPIO[22]
2
GPIO[21]
1
4 1
GPIO[20]
VDDC
3 2
RA504
68
+3.0V
VDDC
1.2V
+3.0V
0.1u
C611
IC611
64K EEPROM
1 8
A0 VCC
2 7
A1 WP
3
6
A2 SCL
4 5
VSS SDA
Tx
Q141
Q161
B
C163 NC
R161
100k
Q142
R151
C
B
100k
E
Bell
HOOK
+3.0V
BELL
Q111
CHARGE_DET
VBAT
LCD_RST
HOOK
LCD_CD
SPI2_CLK
SPI2_DO
LCD_CS
UTX
URX
10
11
12
GND
1 2 3 4 5
GND
KX-TG4753 SCHEMATIC DIAGRAM (Base Unit_Main)
75
KX-TG4753B/KX-TG470B/KX-TGA405B
REFERENCE
1XX : TEL LINE
3XX : POWER, CHARGE
4XX : MIC, SP
5XX : BBIC
R141
6XX : FLASH, EEPROM, KEY, LCD
7XX : FOR DK/BT
100k
8XX : RF
C101 680p
D101
NC
L101
3 2
4 1
C102 680p
L102 NC
C115
NC
R115
NC
Caller ID
+5.5V
+5.5V
+3.0V
*R703
NC
*R701
NC
*Q701
NC
*Q702
NC
VBAT
IC302
2 OUT1 3
IN
4 OUT2
ADJ
1
ZA1 NC
9 8 7
HAK_CL1
6
NC: No Components
L1T
(YELLOW)
L1R
22
P101
(GREEN)
GAP
!
F301
3.0A DCP
DCM
CHG+
CHARGE+
CHARGE-
+5.5V