DOWNLOAD Panasonic KX-TG7321UAC / KX-TG7321UAS / KX-TGA731RUC / KX-TGA731RUS Service Manual ↓ Size: 2.09 MB | Pages: 104 in PDF or view online for FREE

Model
KX-TG7321UAC KX-TG7321UAS KX-TGA731RUC KX-TGA731RUS
Pages
104
Size
2.09 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / DIGITAL CORDLESS ANSWERING SYSTEM
File
kx-tg7321uac-kx-tg7321uas-kx-tga731ruc-kx-tga731ru.pdf
Date
PREV: Panasonic KX-TG7321RUC / KX-TG7321RUS / KX-TGA731RUC / KX-TGA731RUS (serv.man4) Service Manual / Supplement

Panasonic KX-TG7321UAC / KX-TG7321UAS / KX-TGA731RUC / KX-TGA731RUS Service Manual ▷ View online

77
KX-TG7321UAC/KX-TG7321UAS/KX-TGA731RUC/KX-TGA731RUS
2.8V
1.8V
3.0V
TX _RF
RX _RF
TX _AF
Bell signal
Caller ID
0.75V
0V
250mVp-p
Loop Current
Charge Current
RX_AF
GND
GND
Q8
1u
C614
GND
+1.8V
GND
GND
GND
GND
56k F
R615
GND
GND
GND
SA1
L1
L2
GND
GND
J101
GND
GND
+8.0V
K2.2u
C31
GND
4
Fin
1
ADJ/GND
3
Input
2
Output
VDD3
GND
GND
GND
(1005)
NC
C144
10k
R16
GND
GND
GND
GND
NC
(3216)
R123
100k
R14
2.7k
R15
D3
4
1
3
2
LINE_DC
GND
GND
*R13
680
*R12
10k
2.2k
R17
GND
K2.2u
*C16
27k
R18
GND
K2.2u
C17
GND
0.1u
C28
100k
R27
K1u
C15
GND
TP10
100
R116
4700p
C14
8.2k
R19
100k
R23
820
*R31
27
R22
+1.8V
NC
C18
GND
GND
GND
GND
GND
NC
C24
0.0047
*C25
NC
C57
47k
R24
GND
GND
12
R21
GND
TP9
K0.22u
C23
470k
R28
K0.1u
C56
K0.22u
C141
GND
GND
1u
C22
(1005)
NC
C155
1k
R33
1k
R35
220p
C52
68k
R32
220p
C53
68k
R34
GND
1M
R4
K1000p
C6
180k
R5
1M
R6
GND
10p
C136
180k
R3
K1000p
C5
GND
100k
R10
NC
R9
GND
+1.8V
GND
GND
100k
R8
NC
R7
100n
C72
100n
C61
GND
3.3k
R81
3.3k
R117
+1.8V
1n
C157
TP16
TP15
NC
*C48
3.3
(6332)
R57
NC
*C156
GND
3.9
(6332)
R56
NC
*R126
GND
GND
3.9
(6332)
R55
GND
GND
100n
C51
GND
GND
GND
100n
C75
NC
*D16
A
K
D1
A
K
D12
NC
Q4
*Q2
Q5
D23
NC
*D15
AK
+3.0V
2.2u
C84
C306
NC
VDD1
1u
C305
GND
0
*R82
*R83
NC
GND
GND
R621
NC
1k
R130
10k
R129
3A
F1
*R2
NC
D21
10k
RA402
1
2
3
4
*Q23
NC
D5
A
K NC
D6
A NC
K
D9
AK
1.5n
C3
1.5n
C4
680p
C10
680p
C9
1u
C615
Q9
+2.4V
+2.4V
GND
C617
1u
F 140
R39
F 100
R38
220
R106
220
R109
NC
C2
GND
C167
NC
VDD2
1k
R650
1k
R652
1k
R651
100n
C7
100n
C8
10p
C65
10p
C74
1
A0
2
A1
3
A2
4
VSS
5
SDA
6
SCL
7
WP
8
VCC
D22
R654
NC
+2.5_CP
+3.0V
6.8n
*C622
6.8n
C623
1k
R656
C624
NC
L2T
L1T
L1R
DCM
DCP
L2R
C12
N
C
10
(3216)
*R124
2.2k
*R20
470
*R30
68k
*R36
10p
C137
GND
C166
NC
Q3
100u
16
C32
50
10u
C27
*C49
NC
GND
10.368M
X1
1
3
2
22n
C54
0.1
C55
120
R29
NC
D26
R653
NC
ANT1
RF_RXn
RXON
TXON
TXn
TXp
VDD_PADRV
PSEL
PON
ANT2
RF_RXp
C37
3p
GND
3p
C29
C626
NC
NC
C30
10
330u
C36
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
P
A
RADET/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
P
A
OUTp/P3_1
34
VDDP
A
35
P
A
OUTn/P3_0
36
VBA
T1
37
CP_C1x
38
CP_C2x
39
CP_C1y
40
VBA
T2
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
JT
A
G
63
P2_5/PCM_FSC/SF
64
P2_4/SCL1/PCM_DO/DP3
65
P2_3/SD
A
1/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_SUPPL
Y2
72
RFP0n
73
RFP4
76
VSS_P
ADR1
79
VSS_P
ADR2
77
RF_TXp
80
RFP2
75
VDD_P
ADR
78
RF_TXn
74
RFP3
10k
R657
10p
C168
GND
C1
NC
GND
GND
0
R100
10p
*C147
10p
*C148
GND
*Q22
NC
CHARGE
SCL2
SD
A2
EEP_WP
Lo
w_Rad
LED2
LED1
EEP_WP
DC_IN
Charge -
Charge +
TO RF BLOCK
IC1
*IC401
*IC7
(1)
(2)
(3)
(4)
(5)
(7)
(6)
(8)
(9)
KX-TG7321UA SCHEMATIC DIAGRAM (Base Unit)
NC: No Components
78
KX-TG7321UAC/KX-TG7321UAS/KX-TGA731RUC/KX-TGA731RUS
12.3. Schematic Diagram (Base Unit_Operation)
PLAY
1
2
CN10-10
CN10-2
CN10-3
PLAY2
1
2
CN10-4
CN10-1
C
CN10-9
CN10-5
CN10-7
CN10-6
CN10-8
LED2
LED1
LOCATOR
1
2
STOP
1
2
ERASE
1
2
ANS_ON
1
2
VOL_UP
1
2
REPEAT
1
2
VOL_DOWN
1
2
SKIP
1
2
PLAY
ANSWER ON
KX-TG7321 SCHEMATIC DIAGRAM (Base Unit_Operation)
79
KX-TG7321UAC/KX-TG7321UAS/KX-TGA731RUC/KX-TGA731RUS
Memo
80
KX-TG7321UAC/KX-TG7321UAS/KX-TGA731RUC/KX-TGA731RUS
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
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
Y
1
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
A2
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
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
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)
(5)
(7)
(6)
(9)
(10)
(11)
(12)
(8)
Charge Current
0.75V
0V
250mVp-p
2.5V 4.0V
TX _RF
RX _RF
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