Panasonic KX-TG7225RUJ / KX-TG7225RUM / KX-TG7225RUS / KX-TG7225RUT / KX-TG7226RUS / KX-TG7226RUT / KX-TGA721RUJ / KX-TGA721RUM / KX-TGA721RUS / KX-TGA721RUT Service Manual ▷ View online
73
KX-TG7225RU/KX-TG7226RU/KX-TGA721RU
Memo
74
KX-TG7225RU/KX-TG7226RU/KX-TGA721RU
12.4. Schematic Diagram (Handset)
J1
J2
5.6n
F1
4.0V
330u
C1
47u
L1
6.3V
330u
C2
100m R45
100m
R1
BATTERY
+3.3V
VDD3
+2.5V
+1.8V
VDD2
VDD1
10u
L4
10u
L5
+2.5V
+1.8V
1u
C40
1u
C42
+2.5V
820k
R95
430k
R94
+2.5V
POWER
1u
C39
TP20
TP21
BAT
CN3
1
CN3
2
CN3
3
CN3
4
CN3
5
CN3
6
CN3
7
CN3
8
CN3
9
CN3
10
CN3
11
CN3
12
CN3
13
CN3
14
CN3
15
CN3
16
CN3
17
CN3
18
AST
1
2
SHARP
1
2
0
1
2
TALK
12
1u
C41
68
R2
470
R5
10k
R6
39k
R11
100
R13
S1
1
2
J3
5
1
2
3
1
2
4
12
9
1
2
2
1
2
7
12
8
1
2
6
12
1
12
59
LDO1_CTRL
61
P16/PON/
INT6
63
LDO1_sense
65
A
VD2
67
LSRp/REF
69
VREFm
71
A
GND
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
P
A
OUTm
32
P
A
OUTp
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/ST
OP_CHARGE
64
A
VS2
66
*LSR/REF
68
*MIC
70
VB
UF
72
MICp
1
*INT1/P11
3
VDD1
74
P30
5
LED1/PWM0/P20
76
P13/*INT3
7
LED3
78
A
VS_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
VSSP
A1
31
VDDP
A
33
VSSP
A2
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
J4
100n
C26
C4
NC
C9
NC
220k
R7
BATTERY
D8
2
1
1u
C15
3.3k
R15
C5
2.2u
C10
2.2u
INT
12
R
12
SOFT_A
12
SOFT_B
12
SOFT_C
12
UP
12
DO
WN
12
RIGHT
12
LEFT
12
10
RA3
1
2
3
45
6
7
8
R19
NC
AG
2.2k
R25
3.3k
R24
470
R23
5.6k
R46
5.6k
R47
SP
12
CANCEL
12
C119
NC
C118
NC
*RA1
1
2
3
45
6
7
8
10k
R14
0
R93
100n
C43
100n
C44
100n
C45
100n
C46
100n
C47
C3
100n
C24 100n
C19 100n
C20 100n
C21
100n
C22
100n
C30
100n
C48
100n
C11
10n
1n
C18
C23
NC
C98
NC
NC
C27
C101
100n
C113
100n
C114
NC
C6
8p
C7 15p
C8
220n
C34
1u
C36
NC
C49
NC
C12
10u
X1
1
3
2
100p
C35
C38
10n
390
L6
C25
100n
4.7
R12
Q3
Q2
10k
R121
+2.5V
100k
R122
100k
R123
100k
R124
+2.5V
10k
R120
*RA5
1
23
4
10p
C130
10p
C131
L8
D7
A
K
D1
A
K
Q1
G
D
S
LED3
A
K
LED2
A
K
LED1
A
K
*LED9
A
K
*LED8
A
K
*LED7
A
K
*LED4
A
K
*LED6
A
K
*LED5
A
K
B
E
C
Q5
B
C
E
*Q7
B
C
E
Q4
Q9
B
C
E
C133
NC
DC_I
LDO1_CTRL
LDO2_CTRL
UTX
URX
JTAG
RO
W
0
COL5
COL4
COL3
COL2
COL1
LE
SIO
SK
RDI
TD0
LCD_RESET
ST
OP_CHARGE
CHARGE
DC_CTL
DC_I
LDO2_CTRL
LDO1_CTRL
LDO1_CTRL
ROW2
LCD_RS
LCD_CSB
ROW1
COL0
COL1
COL2
COL3
COL5
RO
W
0
RO
W
1
RO
W
3
LCD_RESET
RO
W
2
COL4
CHARGE
DC_CTL
COL0
ST
OP_CHARGE
JTAG
J2
URX
UTX
J2
KEY_LED
LCD_SCL
LCD_SI
RFCLK
LCD_SCL
KEY_LED
RO
W
3
LCD_SI
LCD_RS
LCD_CSB
RESET
*IC1
NC: No Components
BBIC
(1)
(2)
(3)
(4)
(4)
(5)
(6)
(7)
(7)
(8)
(9)
(10)
(11)
(12)
(11)
(12)
1 s
(When on charge)
Charge Current
3.3 V
2.5 V
1.8 V
115 kHz
(Talk Mode)
0.7 V
0 V
25 mVp-p
TX DATA
RX DATA
75
KX-TG7225RU/KX-TG7226RU/KX-TGA721RU
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
76
KX-TG7225RU/KX-TG7226RU/KX-TGA721RU
12.5. Schematic Diagram (Charger Unit)
J1
2
1
TP3
G
TP2
TP1
TP4
R1 10
D1
A
K
F1
SCHEMATIC DIAGRAM (Charger Unit)
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