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 Service Manual ▷ View online
77
KX-TG7227UA/KX-TG7228UA/KX-TGA721RU/KX-TGA721UA
R53
NC
BATTERY
+2.5V
+2.5V
UTX
URX
GND
AG
REV_TEST1
REV_TEST2
SP_TEST1
SP_TEST2
ANT1
TP22
TP23
CLK
MIC
1
2
1k
R52
1k
R61
1k
R62
R63
NC
33
R21
1k
R66
ANT
1
A0
2
A1
3
A2
4
GND
5
SDA
6
SCL
7
WP
8
VCC
CLK_G
10k
RA2
1
2
3
45
6
7
8
JTAG
AG
0
R111
+1.8V
C120
NC
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
SYD
A
14
SYCL
15
GND7
16
RXD
A
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
1n
C52
C50
NC
C54
NC
C55
NC
C56
NC
10p
C58
10p
C59
10p
C62
10p
C70
10p
C71
10p
C75
39p
C57
150p
C53
NC
C112
C37
NC
4.7u
C61
NC
C73
NC
C74
R42
NC
R112
NC
R113
NC
R114
NC
R115
NC
C121
NC
C122
NC
330
R107
390p
C51
C125
3p
100p
C111
100p
C99
150
R106
33
R22
C128
NC
NC
C129
NC
NC
RESET
SK
LE
RFCLK
TD0
SIO
RDI
KX-
TGA721
SCHEMATIC DIAGRAM (Handset)
NC: No Components
IC3
EEPROM
IC4
RF unit
(1)
(2)
(3)
(4)
(4)
(5)
(6)
(7)
(7)
(8)
(9)
(10)
(11)
(12)
(11)
(12)
SP-phone RX
Beep
Beep
TX-AF
RX-AF
(Handset)
(Handset)
TX DATA
RX DATA
10.368 MHz
2.5 V
0 V
78
KX-TG7227UA/KX-TG7228UA/KX-TGA721RU/KX-TGA721UA
12.5. Schematic Diagram (Charger Unit)
J1
2
1
TP3
G
TP2
TP1
TP4
R1 10
D1
A
K
F1
SCHEMATIC DIAGRAM (Charger Unit)
79
KX-TG7227UA/KX-TG7228UA/KX-TGA721RU/KX-TGA721UA
13 Printed Circuit Board
13.1. Circuit Board (Base Unit_MAIN)
13.1.1. Component View
A
KX-TG7227/7228 CIRCUIT BOARD (Base Unit (
Component
View))
PbF
IC10
IC11
IC8
IC1
CN5
CN2
CN1
KX-TG7200
KX-TG7220
KX-TG8200
KX-TG8220
KX-TG823
KX-TG7220
KX-TG8200
KX-TG8220
KX-TG823
C9
C3
L2T/TP_RLY3
L1T/TP_RLY2
J2
SA11
SA1
SA2
SA12
C10
C22
E
E
C23
C24
C28
C71
C64
R56
C27
C109
C110
C144
C157
C156
C106
C108
C103
C162
C162
C121
C159
C32
C119
C158
C80
C142
C133
C81
C128
C129
C96
C93
C127
C84
C88
4
1
1
8
9
17
24
32
25
16
1
11
10
26
27
32
16
1
5
8
C83
C89
C90
C90
C161
C126
C147
R116
R21
R14
R123
R124
R18
R22
R122
R101
R120
R126
R55
R128
R79
R77
R78
R77
R78
R80
R129
R130
R130
R97
R111 R110
R112
R142
R115
R99
R82
R98
R119
R134
R118
L5
L4
D23
Q5
Q3
Q9
E
Q21
Q22
Q23
C31
C30
C124
C4
C18
C148
C85
C82
C14
C155
C141
C2
C17
C16
C15
C91
C160
C95
C131
C113
C145
C146
C111
C48
C112
C122
C117
1
3
4
C37
C36
C114
C130
C115
C116
C132
R39
R38
R57
P1
R88
R91
SW1
R92
R28
R31
R30
R29
R2
R19
R20
R24
R23
R27
R13
R12
E
R127
R143
R144
R73
R114
R75
R76
R141
X1
L21
DA
1
1
L7
L1
L2
J1
J11
ANT_1
ANT_2
PCM_FSC
PCM_CLK
PCM_DIN
PCM_DOUT
TP9
TP10
TP23
RA1
D1
F1
3.0A
D15
D16
D3
D13
D14
D22
Q2
Q25
PQUP11527Z
80
KX-TG7227UA/KX-TG7228UA/KX-TGA721RU/KX-TGA721UA
13.1.2. Flow Solder Side View
A
PQUP11527Z
KX-TG7200
KX-TG7220
KX-TG8200
KX-TG8220
KX-TG823
KX-TG7220
KX-TG8200
KX-TG8220
KX-TG823
PbF
IC5
IC7
C75
C104
ANT
C74
C63
C92 C94
C51
1
4
8
5
49
1
64
48
33
32
17
16
C6
L1R/TP_RLY4
C5
C8
C12
C61
C59
C166
C57
C165
C54
C69
C68
C70
C50
C164
C52
C136C53
C55
R7
R10
R131
R106
R125
R103
R132
R34
R140
R36
R62
R63
R63
R15
R32
D26
D25
D5
Q8
C65
C137
C56
C7
C67
C72
C163
C125
C101
C102
R102
Q10
A_1
A_2
C118
CHARGE
CHARGE
SPEAKER
SP+
SP-
J104
J102
J103
J101
C73
C60
C1
C62
C25
R133
R1
E
R3
R4
R5
R6
R8
R74
R9
R72
R33
R35
R81
R109
VDD2
VDD3
VDD1
LO
W_RAD
R117
R71
R148
R16
R17
R139
R138
LINE_DC
L1T
L2R
L1R
L2T
L22
L9
TP_RL
Y5
TP_RL
Y1
TP16-sub
TP15
TP15-sub
CLK
TP16
D2
D6
D12
D4
D21
D24
E
D9
Q24
E
DCM
DCP
US1
Q1
Q4
GND
GND
GND
for JIG
TX
RX
VDD3
(3.3 V)
VDD2
(2.5 V)
VDD1
(1.8 V)
CHARGE+
CHARGE-
CLK
(10.368 MHz)
ANT
DC_IN
RESET
(IC7:
45pin)
LINE_DC
L1R
L1T
KX-TG7227/7228 CIRCUIT BOARD (Base Unit (Flow Solder Side View))
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