DOWNLOAD Panasonic KX-TG7321CAC / KX-TGA731RUC Service Manual ↓ Size: 2.71 MB | Pages: 102 in PDF or view online for FREE

Model
KX-TG7321CAC KX-TGA731RUC
Pages
102
Size
2.71 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / DIGITAL CORDLESS ANSWERING SYSTEM
File
kx-tg7321cac-kx-tga731ruc.pdf
Date
PREV: Panasonic KX-TG7227UAJ / KX-TG7227UAM / KX-TG7227UAS / KX-TG7227UAT / KX-TG7228UAS / KX-TG7228UAT / KX-TGA721RUM / KX-TGA721RUS / KX-TGA721RUT / KX-TGA721UAJ / KX-TGA721UAM / KX-TGA721UAS / KX-TGA721UAT (serv.man2) Service Manual / Supplement

Panasonic KX-TG7321CAC / KX-TGA731RUC Service Manual ▷ View online

73
KX-TG7321CAC/KX-TGA731RUC
12 Schematic Diagram
12.1. For Schematic Diagram
12.1.1. Base Unit (Schematic Diagram (Base Unit))
Notes:
1. DC voltage measurements are taken with voltmeter from the negative voltage line.
2. The schematic diagrams may be modified at any time with the development of new technology.
12.1.2. Handset (Schematic Diagram (Handset))
Notes:
1. DC voltage measurements are taken with an oscilloscope or a tester with a ground.
2. The schematic diagram may be modified at any time with the development of new technology.
12.1.3. Charger Unit (Schematic Diagram (Charger Unit))
Notes:
1. DC voltage measurements are taken with voltmeter from the negative voltage line.
2. The schematic diagram may be modified at any time with the development of new technology.
74
KX-TG7321CAC/KX-TGA731RUC
12.2. Schematic Diagram (Base Unit)
3.0V
2.5V
TX _RF
TX _RF
RX _RF
Beep
Bell signal
1k
R79
1k
R80
GND
SPm
SPp
GND
GND
GND
NC
*C505
GND
GND
GND
NC
*C502
GND
*SW1
NC
1
2
GND
NC
*C501
GND
R631
NC
+3.0V
100
R75
270k
*R425
UTX
URX
GND
GND
ANT_1
ANT2
NC
C121
NC
C159
ANT1
NC
L4
GND
GND
NC
L5
NC
C119
GND
GND
ANT_2
GND
NC
C158
GND
GND
GND
0
R511
0
*R542
NC
C122
0
*R516
0
*RA501
1
2
3
4
5
6
7
8
1k
R76
0
*R532
ANT1_TP
ANT2_TP
GND
DA1
1
2
3
JTAG
GND
CN5-7
CN5-1
CN5-5
CN5-9
CN5-8
CN5-6
CN5-4
CN5-10
CN5-2
100n
C60
CLK
GND_C
GND
1u
C616
+3.0V
GND
C124
10p
AP1
NC: No Components
*CN5
.
PARALLEL WIRE
10p
C125
10p
C118
100p
C618
GND
100p
C619
NC
C160
GND
4.7u
C620
15n
L7
10k
R78
R77
NC
C117
10p
C123
10p
3.3p
C621
GND
+2.5_CP
1u
C625
NC
*C503
NC
C430
GND
CL1
CL2
D801
GND
GND
10p
C811
22n
L801
GND
100n
C808
2.4p
C802
7p
C812
GND
7p
C832
GND
GND
PON
1k
R804
RF_RXp
1.3p
C803
RF_RXn
GND
GND
7p
C833
GND
TXp
GND
10p
C819
7p
C801
220
R806
4.7n
L803
GND
4.7n
L802
TXn
GND
PSEL
D802
2.4p
C804
3.3n
C814
10p
C825
1p
C834
1.6p
C810
VDD_PADRV
TXON
1k
R803
GND
1
PSET
2
VCCS
3
PI
4
PIX
7
PSEL
8
POX
9
PO
10
VCC
11
GND
5
PRAMP
6
PAON
C837
NC
GND
GND
GND
GND
0.75p
C820
C807
NC
4.7n
L804
100p
C822
RXON
220
R807
1.5p
C826
10p
C809
GND
47
R805
GND
10n
*C421
GND
GND
10k
*R424
VDD4
NC
*C423
GND
NC
*C504
*Q421
1.6p
C813
VDD5
GND
100n
*C422
1
*CE
2
SO
3
*WP
4
VSS
5
SI
6
SCK
7
*HOLD
8
VDD
C149
NC
3.9
*R86
3.9
*R87
560
*R426
560
*R427
560
*R428
3.3k
*R429
GND
NC
*R135
GND
*Q24
B
C
E
NC
*R132
+3.0V
CN5-3
270
R802
680
*R801
1k
NC
*C163
10
R430
10p
*C146
10p
*C145
10p
C827
*C161
2p
SDA2
SCL2
TAM_CSn
SPI_CLK
TAM_WP
KEY0
KEY1
ROW1
ROW2
KEY2
KEY2
ROW0
ROW0
LED1
LED2
RO
W
0
ROW2
ROW1
KEY1
KEY0
CHARGE
TAM_WP
SPI_DI
SPI_DO
SPI_DO
TAM_CSn
SPI_DI
SPI_CLK
Low_Rad
for TG7320/8320
for TG7300/8300
To RF output
CP_OUT1=3.0V
To ANT
Pow_Adj
IC801
*IC421
(1)
(2)
(3)
(4)
(5)
(7)
(6)
(8)
(9)
75
KX-TG7321CAC/KX-TGA731RUC
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
NC
*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
0.047
*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
D5
A
K
D6
AK
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
NC
NC
10
(3216)
*R124
2.2k
*R20
470
*R30
68k
*R36
10p
C137
GND
C166
NC
Q3
100u
16
C32
50
10u
C27
*C49
NC
NC
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
ARADET/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
A1/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
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-TG7321CA SCHEMATIC DIAGRAM (Base Unit)
NC: No Components
76
KX-TG7321CAC/KX-TGA731RUC
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)
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