Panasonic KX-TG8205RUB / KX-TG8205RUJ / KX-TG8205RUM / KX-TG8205RUW / KX-TG8206RUB / KX-TG8206RUM / KX-TG8206RUW / KX-TGA820RUB / KX-TGA820RUJ / KX-TGA820RUM / KX-TGA820RUW Service Manual ▷ View online
69
KX-TG8205RUB/KX-TG8205RUJ/KX-TG8205RUM/KX-TG8205RUW/KX-TG8206RUB/KX-TG8206RUM/KX-TG8206RUW/KX-TGA820RUB/KX-TGA820RUJ/KX-TGA820RUM/KX-TGA820RUW
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.
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.
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KX-TG8205RUB/KX-TG8205RUJ/KX-TG8205RUM/KX-TG8205RUW/KX-TG8206RUB/KX-TG8206RUM/KX-TG8206RUW/KX-TGA820RUB/KX-TGA820RUJ/KX-TGA820RUM/KX-TGA820RUW
12.2. Schematic Diagram (Base Unit)
TX_AF
TX DATA
RX DATA
0 V
2.5 V
10.368 MHz
3.3 V
Beep/Bell signal
Q5
3
2
1
+2.5V
+3.3V
C101
NC
R102
NC
R103
NC
R110
NC
R112
1k
+2.5V
10p
C118
C122
NC
DA1
1
2
3
L5
NC
ANT_1
ANT_2
R109
180
C125
10p
R98
NC
R99
N
C
R63
2.2k
+2.5V
C50
10n
+2.5V
+1.8V
+2.5V
SP+
SP-
+3.3V
R91
NC
R88
NC
2.2k
R62
C84
NC
R92
NC
TP10
ANT
A_1
A_2
CN5-1
CN5-6
CN5-3
CN5-4
CN5-5
CN5-10
CN5-9
CN5-8
CN5-7
CN5-2
12
R21
27
R22
1u
C22
C102
NC
*C16
C17
100n
*C28
L4
NC
CN5
NC
NC
1
GPIO4/
PCM_DI
2
GPIO5/PCM_DO
9
SPI_DI
3
GPIO6/PCM_CLK
4
GPIO7/PCM_FSC
5
VDD1
6
VDDIO1
7
CLK
8
*PF
10
SPI_DO
11
SPI_CLK
12
SPI_EN
13
AVD1
14
GPO9/PAOUTp
15
VDDPA
16
GPO8/PAOUTm
17
GPIO0
18
GPIO1
19
VDD2
20
VDDIO2
21
GPIO2
22
GPIO3
23
*RST
24
AVD2
25
*LSR
26
LSRp
27
MICh
28
*MIC
29
VREFm
30
VBUF
31
MICp
32
VREFp
33
Fin
R120
NC
R101
NC
R115
NC
R114
NC
+3.3V
Q21
NC
1
E1
2
B1
3
C2
4
E2
5
B2
6
C1
+3.3V
R122
NC
D14
NC
A
K
D13
NC
A
K
D9
A K
Q24
NC
B
C
E
NC
R132
R118
NC
180
R106
C158
NC
SP-
SP+
10u
C27
100k
R23
+2.5V
*C25
10n
Q25
NC
NC
390k
R141
47k
R134
27k
R18
8.2k
R19
100k
R27
470k
R28
C24
NC
R82
NC
C14
RA1
NC
1
2
3
4
5
6
7
8
C159
NC
+1.8V
1
GND1
2
ANT2
3
VCCPA
4
GND2
5
GND3
6
VDD_ANA
7
VDD_DIG
8
GND4
9
SYRI
10
GND5
11
GND6
12
SYEN
13
SYDA
14
SYCL
15
GND7
16
RXDA
17
GND8
18
TXDA
19
GND9
20
*RESET
21
ANT1
22
GND10
23
GND13
24
GND12
25
TXPO-SET
26
GND14
27
GND15
28
GND16
29
GND17
30
GND18
31
A_1
32
GND11
R142
NC
R143
NC
R144
NC
+2.5V
+2.5V
C23
220n
C51
C80
NC
C81
NC
C82
N
C
C83
NC
C85
NC
C89
NC
NC
C88
NC
C90
C111
NC
C114
NC
C116
NC
C129
NC
C132
NC
C144
NC
NC
C155
C113
NC
C115
NC
C131
NC
C119
NC
C121
NC
C130
NC
150p
C126
1n
C127
C133
NC
C141 220n
C161
NC
4.7u
C109
C92
NC
C93
NC
C94
NC
C95
NC
C103
10p
C142
NC
C160
100p
C106
10p
C91
NC
NC
C104
NC
C148
NC
C147
L21 22p
1.5n
L7
C162
1
R125
C124
7p
7p
C117
C163
NC
100
R116
330
R111
Q10 NC
B
E
C
LOW_RAD
R119
NC
C112
22p
10p
C110
NC
1
SI
2
SCK
3
*RESET
4
*CS
5
*WP
6
VCC
7
GND
8
SO
390p
C128
C108
*C15
1
u
470
*R30
2.2k
*R20
*C18
5.6k
820
*R31
1
A0
2
A1
3
A2
4
VSS
5
SDA
6
SCL
7
WP
8
VCC
120
R29
47k
*R24
C145
NC
C146
NC
100
R131
SK
TDO
RESET
LE
TAMIC_CSn
SPICLK
SPIDI
SPIDO
MESSAGE
TAM_RSTn
SPICLK
SPIDO
SPIDO
TAM_CSn
SPIDI
KEY0
KEY1
TAM_RSTn
ROW2
ROW1
ROW1
TAM_CLK
RDI
SIO
ANSWER_ON
WP
TAM_RSTn
WP
ROW0
RFCLK
LOW_RAD
for TG7220/8220
Flat-cable
for TG7200/8200
C96 : 10p
NC
IC8
RF UNIT
IC10
IC11
Flash memory
EEPROM
*IC5
(1)
(2)
(3)
(4)
(5)
(8)
(9)
(11)
(10)
(6)
(7)
NC: No Components
71
KX-TG8205RUB/KX-TG8205RUJ/KX-TG8205RUM/KX-TG8205RUW/KX-TG8206RUB/KX-TG8206RUM/KX-TG8206RUW/KX-TGA820RUB/KX-TGA820RUJ/KX-TGA820RUM/KX-TGA820RUW
Charge Current
Bell signal
RX_AF
TX_AF
Caller ID,
Bell Signal
Bell Signal
Loop Current
0 V
0.7 V
TX DATA
RX DATA
25 mV p-p
1.8 V
2.5 V
3.3 V
L2R
J1
NC
J2
NC
L1
33u
L2
33u
680p
C9
680p
C10
D3
4
1
3
2
*R123
100k
R14
2.7k
R15
LINE_DC
SA1
D15
NC
1 2
D16
NC
1
2
CLK
R1
10k
1.5n
C3
1M
R4
C5
1n
1.5n
C4
1M
R6
R5
180k
C6
1n
*R7
5.6M
100k
R8
+2.5V
*R9
5.6M
100k
R10
J101
J104
J103
J102
R76
1
k
R81
3.3k
100n
C56
+1.8V
D12
15
R72
VDD1
+2.5V
VDD2
VDD3
+3.3V
120
R38
200
R39
4
Fin
1
ADJ/GND
3
Input
2
Output
+8.0V
DCM
1k
R79
1k
R80
L2T
L1T
L1R
CN2
2
1
NC
C30
CN1
1
2
3
4
2
3
4
5
6
1u
C70
SA2
NC
D1
1
2
470n
C2
100
R75
TP23
10k
R74
TP9
TP_RLY1
L1T/TP_RLY2
L2T/TP_RLY3
L2T/TP_RLY3
L1R/TP_RLY4
TP_RLY5
*D4
20V
1 2
10k
R77
10k
R78
C37
NC
3.3k
R71
3.3k
R117
1k
R33
0
R97
R3
180k
C31
Q4
1
3
2
Q3
B
C E
J11
NC
NC
SA12
2
12
1
NC
D2
A K
*D5
A
K
*D6
D21
N
C
A K
Q1
NC
B
C
E
D22
22V
D23
R126
NC
Q22
NC
R127
NC
Q23
NC
NC
R128
+2.5V
10k
R129
1k
R130
TP16
TP15
330u
C36
6.3
C32
100u
16
16
10u
C71
10u
C64
16
SW1
1 2
R140
NC
NC
D24
NC
D25
A K
A K
A K
C7
NC
C8
NC
R139
NC
PCM_FSC
PCM_CLK
PCM_DOUT
PCM_DIN
DCP
10k
R16
100k
R32
100k
R34
1k
R35
220p
C52
220p
C53
0
L22
C1
10p
C48
NC
C54
10n
C55
0.082u
C57
NC
C59
C60
C61
C65
C73
C74
C75
C68
1u
C69
NC
10p
C136
10p
C137
220n
C72
C156
NC
1n
C157
L9
390
C67
TP16-sub
TP15-sub
3.9
R55
3.9
R56
3.3
R57
CHARGE
US1
*D26
N
C
A K
Q8
Q9
B
E
C
R148 NC
1n
C96
12
R133
1
*INT1/P11
2
VDDIO1
3
VDD1
4
VSS1
5
SDA1/P25
6
SCL1/P24
7
*INT5/VDDE/P15
8
*INT2/P12
9
AVD
10
AVS
11
CAP
12
Xtal1
13
VSSRF
14
RFCLKp
15
RSSI/RFCLKm
16
VDDRF
17
RFCLKd
18
TDO
19
RDI
20
SK
21
PD1/SIO
22
LE
23
P31/PD1
24
P32/PD2
25
P33/PD3
26
P34/PD4
27
TDOD/P35/PD5
28
P36/PD6
29
VSS2
30
VDDIO2
31
VDD2
32
PCM_FSC/*INT0/P10
33
P00/UTX
34
P01/URX
35
P02/JTIO
36
P03/SDA2
37
P04/SCL2
38
P05/SPICLK/PCM_CLK
39
P06/SPIDO/PCM_DOUT
40
P07/SPIDI/PCM_DIN
41
VSS3
42
VDD3
43
P23/ADC1
44
P17/CHARGE/INT7
45
*RST
46
VBAT1
47
LDO1_CTRL
48
LDO2_CTRL
49
LDO1_
Sense
50
AVS2
51
AVD2
52
*CIDIN
53
*LSR/REF
54
LSRp/REF
55
RINGING
56
*MIC/CIDOUT
57
VREFm
58
AGND
59
MICp
60
CIDINp
61
P14/*INT4
62
P13/*INT3
63
ADC2
64
ADC0
*R36
150k
SA11
NC
*Q2
B
C
E
*R13
680
*R12
10k
*C12
NC
10
*R124
2.2k
*R17
3
F1
RH1
P1
0
R2
NC
10p
C164
10p
C165
1u
*C166
R138
NC
TAM_CSn
TAMIC_CSn
SPIDI
SPIDO
SPICLK
TAMIC_CSn
ROW0
RESET
LE
SIO
SK
RDI
TDO
RFCLK
LOW_RAD
TAM_CLK
ROW1
ROW2
KEY0
KEY1
WP
ROW0
Charge +
Charge -
DC_IN
GND
JTAG
RX
TX
for NL
for JT
for TG7200/8200
for BR
for BR
3.3M
R73
X1
1
3
2
C62
22p
C63
NC
IC1
*IC7
BBIC
(1)
(2)
(3)
(4)
(5)
(8)
(9)
(11)
(10)
(6)
(7)
NC: No Components
KX-TG8205/8206RU
SCHEMATIC DIAGRAM (Base Unit)
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KX-TG8205RUB/KX-TG8205RUJ/KX-TG8205RUM/KX-TG8205RUW/KX-TG8206RUB/KX-TG8206RUM/KX-TG8206RUW/KX-TGA820RUB/KX-TGA820RUJ/KX-TGA820RUM/KX-TGA820RUW
12.3. Schematic Diagram (Handset)
J1
J2
5.6n
F1
4
330u
C1
47u
L1
D1
1 2
6.3
330u
C2
100m
R45
Q1
1
3
2
100m
R1
68
R2
Q3
1
3
2
Q2
1
3
2
BATTERY
+4.2V
VDD3
+2.5V
+1.8V
VDD2
VDD1
L4
NC
D7
1 2
10k
R6
220k
R7
+2.5V
+1.8V
UTX
URX
GND
+2.5V
+4.2V
POWER
TP20
TP21
BAT
47
R71
1u
C29
+4.2V
BATTERY
+1.8V
C9
NC
LED1
LED-
J3
J4
VDD4
470
R5
100
R13
10k
R65
3.3k
R15
D8
2
1
Q7
B
C
E
1u
C15
C4
NC
+2.5V
100
R103
R96
N
C
100
R104
R104
C28
NC
100
R105
R97
NC
100
R106
R98
NC
R99
NC
100
R107
L7
Q12
B
C
E
Q5
B
C
E
59
LDO1_CTRL
61
P16/PON/
INT6
63
LDO1_sense
65
AVD2
67
LSRp/REF
69
VREFm
71
AGND
73
VREFp
4
VSS1
75
P14/*INT4
6
LED2/PWM1/P21
77
P22/CLK100
8
LED_BIAS/P36/PD6
79
ADC3
10
SCL1/P24
12
*INT2/P12
14
AVS
16
Xtal1
18
RFCLKp
20
VDDRF
22
TDO
24
SK
26
LE
28
P32/PD2
30
PAOUTm
32
PAOUTp
34
P33/PD3
36
TDOD/P35/PD5
38
VDDIO2
40
PCM_FSC/*INT0/P10
42
P01/URX
44
P03/SDA2
46
P05/SPICLK/PCM_CLK
48
P07/SPIDI/PCM_DIN
50
VDD3
52
P17/CHARGE/INT7
54
DC_STAB
56
DC_CTRL
58
VBAT1
60
LDO2_CTRL
62
P26/STOP_CHARGE
64
AVS2
66
*LSR/REF
68
*MIC
70
VBUF
72
MICp
1
*INT1/P11
3
VDD1
74
P30
5
LED1/PWM0/P20
76
P13/*INT3
7
LED3
78
AVS_sense
9
SDA1/P25
80
ADC0
11
*INT5/VDDE/P15
13
AVD
15
CAP
17
VSSRF
19
RSSI/RFCLKm
21
RFCLKd
2
VDDIO1
23
RDI
25
PD1/SIO
27
P31/PD1
29
VSSPA1
31
VDDPA
33
VSSPA2
35
P34/PD4
37
VSS2
39
VDD2
41
P00/UTX
43
P02/JTIO
45
P04/SCL2
47
P06/SPIDO/PCM_DOUT
49
VSS3
51
P23/ADC1
53
*RST
55
DC_I
57
DC_Sense
Q9
B
C
E
0
R152
NC
R153
+3.3V
D2
1 2
+3.3V
R167
NC
0
R168
SW1
1
2
36
5
4
7
8
INT
1 2
R
1 2
SHARP
1
2
0
1 2
AST
1 2
9
1
2
8
1
2
7
1
2
6
1
2
5
1
2
4
1
2
3
1
2
2
1
2
1
1
2
CANCEL
1 2
SP
1 2
S1
1 2
TALK
1 2
SOFT_C
1 2
SOFT_A
1 2
CN3
1
CN3
2
CN3
3
CN3
4
CN3
5
CN3
11
CN3
10
CN3
9
CN3
8
CN3
7
CN3
6
CN3
12
CN3
13
Q4
B
C
E
5.6k
R46
5.6k
R47
0
R
175
0
R
176
100
R95
NC
1k
R66
2.2u
C5
2.2u
C10
JTAG
CL1
CL2
R19
NC
+2.5V
39k
R11
1k
R62
0
R182
1k
R61
10k
R64
C161
NC
100n
C26
10k
R183
C3
C6
C8
220n
C23
NC
NC
C36
1n
C18
C96
NC
C97
NC
C19
C20
C21
0.1u
C22
C24
C25
C30
C84
0.1u
C119
C121
100p
C35
100p
C103
100p
C104
100p
C105
100p
C106
100p
C107
C38
C27
C34
C39
C120
100
R63
560
RA3
1
23
3
3
3
4
560
RA4
1
2
4
560
RA5
1
2
4
560
RA6
1
2
4
C7 12p
X1
1
3
2
LED11
A
K
LED10
A
K
LED8
A
K
LED6
A
K
LED7
A
K
LED5
A
K
LED9
A
K
LED4
A
K
L24
NC
4.7
R12
0
R195
1n
C168
0
R196
DC_I
AVS_sense
ADC3
URX
JTAG
ROW0
COL5
COL4
COL3
COL2
COL1
LE
SIO
SK
RDI
TD0
ADC3
AVS_sense
ROW3
ROW2
ROW1
KEY_LED
ROW1
ROW3
CHARGE
ROW2
RESET
RFCLK
LDO1_CTRL
LDO2_CTRL
URX
DC_CTRL
LCD_BACK
STOP_CHARGE
MIDI_SDA
MIDI_SCL
MIDI_SCL
COL0
KEY_LED
MIDI_IRQ
UTX
JTAG
LCD_BACK
LCD_CD
LCD_CSB
COL0
COL5
COL4
COL3
COL2
ROW0
COL1
LCD_CSB
LCD_SCL
LCD_CD
LCD_SDA
LCD_RESET
STOP_CHARGE
HEADSET_DET
UTX
MIDI_CS
LCD_RESET
LCD_SCL
LCD_SDA
R168 : NC
except RU/UA
R167 : NC
R168 :
R168 :
0
R167 :
0
for RU/UA
right
Left
Push
up
down
IC1
BBIC
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(16)
(10)
(11)
(12)
(13)
(14)
(15)
NC: No Components
1s
(When on charge)
Charge Current
TX DATA
RX DATA
384kHz
(Talk Mode)
3.3V
Backlight On 4.0V
Backlight Off 3.5V
Backlight Off 3.5V
2.5V
1.8V
0.65V
0V
300mVp-p
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