Schematic Diagram (Handset_Main) - Panasonic KX-TG4753B Service Manual

KX-TG4753B/KX-TG470B/KX-TGA405B

14.4. Schematic Diagram (Handset_Main)

!
F1
BAT+
2.5A
GND GND
BAT-
Battery
GND
CHG+
R8
CHG+
3.3
CHARGE
Terminal
CHG-
GND GND GND
GND
GND
GND
CP3V
UTX
URX
GND
GND
GND
RIGHT DOWN UP
TALK
FLASH AST 7 4
0 8 5
SP
9 6
LEFT SHARP
SOFT_B SOFT_C SOFT_A
VOL_DW
CP4V
CP3V
LCD_BACKLIGHT
[White]
BELL LED
(AMBER)
GND GND GND GND
*Q5
GND GND
NC: No Components
Charge Current
VBAT VBAT
GND GND
CHG_CUR
When on Charge
Q2
C27
1s
1000p
R2
30k
Q3
Q4
Q9
CHG_CTRL
CHG_CTRL
CHG_DET
CHG_DET
VBAT
CP4V
*IC4
6
1
VOUT CP
2 5
GND VCC
4
3
SHD CN
4.0V
CP_OFF
OFF
KIN_5
1
KIN_4
2
KIN_3
3
KIN_2
VOL_UP
RE1
RE1
KIN_1
CP3V
LCD BACKLIGHT KEY BACKLIGHT
(AMBER) (AMBER)
+
WLED
-
Q6
GND GND
GND GND GND GND
CP3V
C69
0.1u
RA5
3.3k 8
VCC A0
EEP_WP EEP_WP E_WP
7
WP A1
32K
EEP_SCL EEP_SCL E_SCL
6
SCL A2
EEP_SDA EEP_SDA E_SDA
5
SDA VSS
*IC3
* Start Monitor
* When "SFR" command
is executed, 13.824 MHz
frequency will be output.
CP3V
GND
TDI
TMS
TCK
TDO
GND_J
CP3V
RTCK
GND
EEP_SCL
67
GPIO[0]/SCL_IIC
EEP_SDA
68
GPIO[1]/SDA_IIC
UTX
EEP_WP
69
GPIO[2]
URX
HEADSET_DET
70
GPIO[3]
STB_D
71
GPIO[4]
LCD_RESET
72
GPIO[5]
73
GPIO[6]
LCD_SID
74
GPIO[7]
LCD_SCL
75
GPIO[8]
C40
76
VDDIO1
LCD_CS
k0.1u 77
GPIO[9]
GND
LCD_CD
78
GPIO[10]
KIN_1
79
GPIO[11]
KIN_2
80
GPIO[12]
KIN_3
81
GPIO[13]
KIN_4
82
GPIO[14]
KIN_5
83
GPIO[15]
84
GPIO[16]
STB_A GND
85
GPIO[17]
86
VDDIO2
STB_B
87
GPIO[18]
URX
88
GPIO[19]
89
GND
UTX
STB_C
STB_E
CP_OFF
BELL_LED
KEY_LED
VDDC
VDDC
FLASH:1.8V / ROM:1.2V
1.2V
3.0V
CP3V
B/W LCD Unit
78
1
2
3
4
GND
TO RF BLOCK
TXON
TXn
TXp
RXp
RXn
RXON
VDDC VBAT
C46 10p
C45 C43
K0.1u K0.1u
RSTN
GND
VBAT
44
TXn
43
TRSW_n
42
ANT
C22
41
VCC_FE
k0.1u
40
VDD_IF
C23
39
VCC_IF
0.1u
38
VDD_APU
C24
37
VBAT_APU
1u
36
XIN
35
XOUT
IC1
34
DCINS
VBAT
33
PWM0
32
PWM1
31
SPOUTP
30
VCCPA
29
SPOUTN
28
LOUT
(1608)
27
HSSPOUTP
26
MPWR
GND
25
HSMIP
24
HSMIN
23
MIP
R24
10
C29
GNDA
1u
GND (1608)
GNDA
CP3V
3.0V
VBAT
CHG_CUR
GND
C25 K2.2u
C26 10u
(1608)
(1)
(2)
CHG_DET
CHG_CTRL
(3)
C68 (4)
1u
(5)
(6)
(7)
(8)
GNDA
(9)
(10)
GNDA
GND
(11)
(12)