Read Panasonic KX-TG6451CAT / KX-TGA641RUT Service Manual online
74
KX-TG6451CAT/KX-TGA641RUT
13.5. Schematic Diagram (Cordless Handset)
BATT+
BATT-
0.1
R45
BATTERY
+1.8V
GND
R65
NC
1k
R66
5.6n
F1
D8
C36
NC
C45
K0.1u
C121
NC
C35
NC
+1.8V
GND
1u
C47
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
C44
K0.1u
GND
1.2k
R7
100
R8
CP+4.0V [RU]
+1.8V
k0.1u
C40
RF_RXp
ANT2
PON
PSEL
VDD_PADRV
TXp
TXn
TXn
TXON
RXON
ANT1
RF_RXn
CP+3.0V
0
R215
Q7
Q2
Q4
C41 NC
BATTERY
NC
*R252
0
*R251
1u
C50
1u
C49
Q10
GND
CP+4.0V
CP+4.0V
DOWN
1 2
UP
1 2
SOFT_C
1 2
SOFT_B
1 2
SOFT_A
1 2
SHARP
1 2
AST
1
2
GND
8
1 2
TALK
1
2
R
1
2
4
1 2
7
1 2
3
1 2
9
1 2
SP
1 2
1
1 2
6
1 2
2
1 2
0
1 2
5
1 2
S1
1 2
100
R63
F56k
R203
10k
R64
BATTERY
NC
L8
GND
C147
1u
R4
NC
3.9k
R2
GND_0
C43
10p
C46
10p
150
*R310
150
*R309
150
*R308
C39
NC
GND
CP+3.0V
CP+3.0V [EX]
Q9
NC
*R249
10
R20
D7
1k
R6
NC
R31
*LED4
*LED9
*LED8
*LED6
*LED7
*LED5
*LED3
*LED2
*LED1
NC
R12
LED12
D1
1M
R330
1u
C332
Q11
Q12
GND
GND
27k
R332
BATTERY
27k
R331
GND
GND
1k
RA1
1
2
3
45
6
7
8
GND
K10u
C53
K10u
C52
D10p
C54
GND
D10p
C55
K1u
C51
820
R27
K10u
C12
NC
*C17
K0.1u
C11
K0.1u
C13
NC
*R22
3.3k
RA4
1
2
3
4
VREFm
NC
*C18
D10p
C96
NC
*C16
820
R28
NC
*C14
NC
C7
D10p
C97
NC
*C184
NC
C48
1k
RA2
1
23
4
NC
*R25
NC
R225
K2.2u
C10
27k
R30
560
*R300
560
*R301
560
*R302
560
*R303
560
*R304
560
*R305
6.3V
330u
CP2
C2
GND
NC
C4
GND
VREFm
RE2
RF-SHIELD
12
3
4
5
6
GND
UTX
URX
GND
JTAG
BAT
CP4.0V
CP3.0V
POWER
X_CLK
1.8V
CHG(+)
CHG(-)
K1u
C15
NC
C6
NC
L4
NC
L5
TEST
K0.1u
C5
NC
( )
C3
NC
( )
C150
220
RA61
1
2
4
3
6.3
330u
C1
CP1
1u
C331
C182
3p
X1
10.368M
1
3
2
10p
C138
0
*R248
1
VSS_LNA1
2
RF_RXp
21
CIDINp/
VREFp
3
RF_RXn
4
VSS_LNA2
5
RFP1
6
RFP0
7
REF_RES
8
AVS_XTAL
22
RINGp/P3_7
23
RINGn/P3_6
24
RINGOUT/RINGING/P3_5
25
PARADET/P3_4
26
ADC0/P3_3
27
ADC1/INT0/P1_0
28
NTC/ADC2
41
CP_C2y
42
CP_VOUT1/LED1
43
CP_VOUT2/LED2
44
PON/P1_6
45
VDD1
46
P2_7/BXTAL
81
GND
9
XTAL2
10
XTAL1
11
AVD_XTAL
12
RF_SUPPLY1
13
LDO_CTRL
14
AVD
15
LSRn
16
LSRp
17
VREFm
18
MICh
19
CIDOUT/MICn
20
CIDINn/MICp
29
SOCp
30
SOCn
31
CHARGE_CTRL
32
P1_7/CHARGE
33
PAOUTp/P3_1
34
VDDPA
35
PAOUTn/P3_0
36
VBAT1
37
CP_C1x
38
CP_C2x
39
CP_C1y
40
VBAT2
47
P1_5/INT5/RDI/VDDE
48
P1_4/INT4/TDOD
49
P1_3/INT3/SIO
50
P1_2/INT2/SK
51
P1_1/INT1/LE
52
P2_6/WTF_IN
53
P0_7/SPI_DI
54
P0_6/SPI_DO
55
P0_5/SPI_CLK
56
P0_4/SPI_EN
57
P0_3/SCL2
58
P0_2/SDA2
59
P0_1/URX
60
P0_0/UTX
61
RSTn
62
JTAG
63
P2_5/PCM_FSC/SF
64
P2_4/SCL1/PCM_DO/DP3
65
P2_3/SDA1/PCM_DI/DP2
66
P2_2/PCM_CLK/CLK100
67
P2_1/ECZ2/PWM1/LED4
68
P2_0/ECZ1/PWM0/LED3
69
VDD2
70
LDORF_CTRL
71
RF_SUPPLY2
72
RFP0n
73
RFP4
76
VSS_PADR1
79
VSS_PADR2
77
RF_TXp
80
RFP2
75
VDD_PADR
78
RF_TXn
74
RFP3
GND
10p
C139
10p
*C38
LDO_CTRL
COL0
CHARGE_CTRL
SOCp
CHARGE
UTX
COL0
COL1
COL2
COL3
COL4
COL1
COL2
COL3
COL4
ROW2
ROW3
ROW2
ROW1
CHARGE
CHARGE_CTRL
COL1
COL2
COL4
KEY_LED
KEY_LED
ROW0
BELL_LED_A
URX
SOCn
LDO_CTRL
LCD_RESET
LCD_CD
LCD_SCL
LCD_SDA
JTAG
SOCp
LCD_CSB
ROW0
ROW3
COL3
ROW1
SOCn
BELL_LED_A
CHARGE
Terminal
Terminal
BATTERY
KEY BACKLIT
BELL LED
TO RF BLOCK
LCD BACKLIT
[EX]
[RU]
LCD BACKLIT
(Amber)
(Amber)
(Amber)
To PA
(MAX500mA)
KEY BACKLIT CP+3.0V (Amber)
KEY BACKLIT CP+4.0V (Blue)
LCD BACKLIT CP+3.0V (Amber)
LCD BACKLIT CP+4.0V (Blue)
study to
Study LCD
driver
driver
*IC1
(1)
(2)
(3)
(2)
(3)
(4)
(6)
(5)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(7)
NC: No Components
Charge Current
0.75V
0V
250mVp-p
3.0V 4.0V
TX _RF
RX _RF
1.8V
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