Read Panasonic KX-TG7321CAC / KX-TGA731RUC Service Manual online
79
KX-TG7321CAC/KX-TGA731RUC
+1.8V
1.8V
MIC-
MIC+
RECEIVER
+
-
SP-PHONE_SPEAKER
+
-
C70
NC
C71
NC
10p
C72
10p
C73
C113
NC
C152
NC
C140
NC
10k
R40
10k
R41
100p
C104
100p
C105
C106
NC
100p
C103
C107
NC
GND
GND GND GND
GND
GND
BATTERY
0
R152
GND
GND
10k
R42
GND
16V
K0.47
C181
R253
NC
R255
NC
R157
NC
D3
2
1
D4
2
1
C75
NC
C74
NC
VREFm
VREFm
CN5
CS
1
CN5
CAP1-
10
CN5
RS
3
CN5
VSS
7
CN5
SDA(SI)
5
CN5
VDD
6
CN5
CAP1+
11
CN5
V4
17
CN5
SCL
4
CN5
V2
15
CN5
V3
16
CN5
CAP2+
12
CN5
CAP3+
9
CN5
V1
14
CN5
CAP2-
13
CN5
RESET
2
CN5
V0
18
CN5
VOUT
8
GND
GND
MIC
PB1
1
2
C10
NC
RG+3.1V
R256
NC
470
R51
470
R52
C76
NC
C77
NC
VREFm
VREFm
64K
1
A0
2
A1
3
A2
4
GND
5
SDA
6
SCL
7
WP
8
VCC
3.3k
R53
3.3k
R50
RG+3.1V
0.1u
C172
1u
C80
C174
1u
16v
C173
1u
16v
1u
C176
1u
C175
C180
K0.47
16V
C178
K0.47
16V
C179
K0.47
16V
C177
K0.47
16V
D19
D20
+1.8V
R271
NC
GND_0
GND_0
GND_0
GND_0
D13
D14
+3.0V
R254
NC
0
R55
10k
R54
GND
GND
GND
GND_0
GND_0
CP+2.5V
CP+2.5V
100p
C842
10p
C118
10p
C125
GND
220
R108
220
R107
10p
C117
GND
GND
ANT_TP
10p
C124
ANT1
ANT2
100p
C841
GND
GND
GND
1p
C834
7p
C832
GND
GND
10p
C811
10p
C809
GND
100n
C808
7p
C833
100p
C822
50
1.5p
C826
220
R807
1.3p
C803
1k
R803
220
R806
47
R805
D801
1.6p
C813
GND
GND
2.4p
C802
7p
C801
BATTERY
GND
GND
2.4p
C804
GND
D802
4.7n
L804
0.75p
C820
4.7n
L802
10p
C819
GND
1.6p
C810
7p
C812
3.3n
C814
0.5p
C837
GND
GND
GND
GND
1k
R804
1
PSET
2
VCCS
3
PI
4
PIX
7
PSEL
8
POX
9
PO
10
VCC
11
GND
5
PRAMP
6
PAON
GND
GND
GND
4.7n
L803
GND
C807
NC
GND
10p
C825
DA1
1
2
3
RF_RXn
TXON
RXON
VDD_PADRV
Txn
Txp
PSEL
PON
RF_RXp
0
R56
0
R58
0
R57
GND
270
R802
2p
C184
2p
C185
L10
33
L11
33
620
R801
LCD_CSB
LCD_CD
LCD_SCL
LCD_RESET
LCD_SDA
LSRp
LSRn
MICp
MICn
(MAX500mA)
to LCD UNIT
IC3
IC801
(1)
(2)
(3)
(4)
(3)
(4)
(5)
(7)
(6)
(9)
(10)
(11)
(12)
(8)
KX-TGA731 SCHEMATIC DIAGRAM (Handset_Main)
NC: No Components
1.8V
RX_RF
TX_RF
TX_RF
TX _AF
RX-AF
(Handset)
Sp-phone RX
Beep
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