Panasonic KX-TG7321CAC / KX-TGA731RUC Service Manual ▷ View online
77
KX-TG7321CAC/KX-TGA731RUC
Memo
78
KX-TG7321CAC/KX-TGA731RUC
12.4. Schematic Diagram (Handset)
BATT+
BATT-
0.1
R45
C34
NC
BATTERY
GND
UTX
URX
GND
POWER
CHG(+)
CHG(-)
BAT
R65
NC
1k
R66
5.6n
F1
D8
C149
NC
C36
NC
C45
K0.1u
C121
NC
C35
NC
C12
10uF
1u
C15
+1.8V
GND
1u
C47
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
C138
NC
GND
C44
K0.1u
0
R11
2.2u
C48
C150
NC
GND
GND
1.2k
R7
100
R8
CP+4.0V
+1.8V
k0.1u
C40
RF_RXp
ANT2
PON
PSEL
VDD_PADRV
TXp
TXn
TXn
TXON
RXON
ANT1
RF_RXn
CP+2.5V
CP2.5V
0
R215
Q7
Q2
Q4
C41
NC
BATTERY
K0.1u
C13
K0.1u
C11
R46
NC
R47
NC
R237
NC
R244
NC
0
*R252
NC
*R248
NC
*R251
3.3k
RA4
1
2
3
4
1u
C50
1u
C49
GND
Q12
GND
VREFm
820
R28
820
R27
GND
GND
VREFm
CP4.0V
CP+4.0V
CP+4.0V
DO
WN
12
UP
12
RIGHT
12
LEFT
1
2
INT
12
SOFT_C
12
R.
12
SOFT_B
12
SOFT_A
12
SHARP
12
AST
1
2
1u
C51
GND
RG+3.1V
RG+3.1V
DD+4.0V
NC
R247
R250
NC
R260
NC
NC
R257
DD+4.0V
X_CLK
GND
RG+3.1V
GND
R1
NC
3.1V REG
NC
1
VIN
2
VSS
3
CE
5
VOUT
4
NC
GND
NC
1
CE
2
VOUT
3
NC
5
EXT
4
GND
NC
C6
GND
L1
NC
C101
NC
C4
NC
DD+4.0V
GND
GND
C3
1u
1k
R233
1k
R238
1k
R235
1k
R234
8
12
TA
L
K
1
2
CANCEL
1
2
4
12
7
12
3
12
9
12
SP
12
1
12
6
12
2
12
0
12
5
12
S1
1
2
R258
NC
100
R63
1k
RA61
1
2
3
4
C38
NC
56k
R203
F
10k
R64
R16 NC
0
R18
0
R19
0
R17
BATTERY
10u
L4
10u
L5
L8
C7
NC
C8
NC
C9
NC
GND GND
GND
GND
4.7u
C183
FET/DIODE
NC
1
G
2
S
3
K
4
A
5
NC
6
D
470
R23
C147
1u
R4
NC
3.9k
R2
0
R270
JTAG
560
*R304
560
*R302
GND_0
C43
10p
C46
10p
0
R10
R9
NC
C20
NC
GND
+3.0V
GND
1k
R15
C22
NC
C21 NC
NC
1
VIN
2
C+
3
C-
4
ON/*OFF
5
GND
6
VOUT
GND
150
*R310
150
*R309
150
*R308
C39
NC
GND
CP+2.5V
CP+2.5V
3.3p
C182
Q9
6.3
330u
C2
CR2
0
R5
C5
NC
X1
1
3
2
560
*R300
560
*R301
560
*R303
560
*R305
0
*R249
10
R20
D7
27k
R30
1
VSS_LNA1
2
RF_RXp
21
CIDINp/VREFp
3
RF_RXn
4
VSS_LNA2
5
RFP1
6
RFP0
7
REF_RES
8
A
VS_XT
AL
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_V
OUT1/LED1
43
CP_V
OUT2/LED2
44
PON/P1_6
45
VDD1
46
P2_7/BXT
AL
81
GND
9
XT
AL2
10
XT
AL1
11
A
VD_XT
AL
12
RF_SUPPL
Y1
13
LDO_CTRL
14
AV
D
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/SD
A
2
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
1k
R6
0
R31
100p
C96
100p
C97
*LED4
*LED9
*LED8
*LED6
*LED7
*LED5
*LED3
*LED2
*LED1
0
R12
LED12
C52
10uF
C53
10uF
D1
6.3
100u
C1
CR1
LDO_CTRL
COL0
SOCn
CHARGE_CTRL
SOCp
CHARGE
LCD_RESET
UTX
COL0
COL1
COL2
COL3
COL4
COL1
COL2
COL3
COL4
RO
W
3
RO
W
2
RO
W
1
RO
W
3
RO
W
2
RO
W
1
ROW0
CHARGE
CHARGE_CTRL
COL1
COL2
COL3
COL4
COL5
RO
W
0
BELL_LED_A
KEY_LED
LCD_SCL
LCD_CD
LCD_SD
A
JTAG
URX
KEY_LED
BELL_LED_A
COL5
SOCn
SOCp
LCD_CSB
LDO_CTRL
CHARGE
Terminal
Terminal
BATTERY
BBIC
KEY BACKLIT
BELL LED
NC: No Components
TO RF BLOCK
LCD BACKLIT
[EX]
[RU]
[RU]
[EX]
LCD BACKLIT
DCDC_REG_CS
To PA
IC13
IC10
IC11
IC20
*IC1
(1)
(2)
(3)
(4)
(3)
(4)
(5)
(7)
(6)
(9)
(10)
(11)
(12)
(8)
Charge Current
0.75V
0V
250mVp-p
2.5V 4.0V
TX _RF
RX _RF
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
80
KX-TG7321CAC/KX-TGA731RUC
12.5. Schematic Diagram (Charger Unit)
J1
2
1
TP3
G
TP2
TP1
TP4
R1 10
D1
A
K
F1
SCHEMATIC DIAGRAM (Charger Unit)
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