Panasonic KX-TG8021UAC / KX-TG8021UAS / KX-TG8021UAT / KX-TGA800RUC / KX-TGA800RUS / KX-TGA800RUT Service Manual ▷ View online
77
KX-TG8021UA/KX-TGA800RU
12.4. Terminal Guide of the ICs, Transistors and Diodes
12.4.1. Base Unit
12.4.2. Handset
12.4.3. Charger Unit
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KX-TG8021UA/KX-TGA800RU
13 Schematic Diagram
13.1. For Schematic Diagram
13.1.1. 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.
13.1.2. 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.
2. The schematic diagram may be modified at any time with the development of new technology.
13.1.3. 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.
79
KX-TG8021UA/KX-TGA800RU
Memo
80
KX-TG8021UA/KX-TGA800RU
13.2. Schematic Diagram (Base Unit)
3.0V
2.5V
TX _RF
TX _RF
RX _RF
Beep
Bell signal
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
10k
*R135
GND
*Q24
B
C
E
620
*R132
+3.0V
CN5-3
270
R802
15k
*R801
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
ROW1
KEY1
KEY0
KEY0
CHARGE
TAM_WP
SPI_DI
SPI_DO
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)
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