Read Panasonic KX-TCD225UA / KX-TCA122UA / KX-TCA121UA Service Manual online
40 SCHEMATIC DIAGRAM (HANDSET)
Charge Current
EEPROM
IC3
AT24C64-10SJ-1.8
1
A0
2
A1
3
A2
4
VSS
5
SDA
6
SCL
7
WP
8
VCC
+1.8V
IC1
BBIC
INT1n/P1_1
VDDIO
VDD
4
2
3
1
VSS
5
LED1/PWM0/P2_0
6
LED2/PWM1/P2_1
7
LED3
8
9
9
LED_BIAS/P3_6/PD6
SDA1/P2_5
10
SCL1/P2_4
11
INT5n/VDDE/P1_5
12
INT2n/P1_2
13
AVD
14
AVS
15
CAP
16
Xtal
1
17
VSSRF
18
RFCLKp
19
RSSI/RFCLKm
20
VDDRF
21
RFCLKd
22
TDD
23
RDI
24
SK
25
PD1/SIO
26
LE
27
P3_1/PD1
28
P3_2/PD2
29
VSSPA
30
PAOUTm
31
VDDPA
32
PAOUTp
33
VSSPA
34
P3_3/PD3
35
P3_4/PD4
36
TDOD/P3_5/PD5
37
VSS
38
VDDIO
39
VDD
40
40:PCM_FSC/INT0n/P1_0
41
P0_0/UTX
42
P0_1/RTX
43
P0_2/JTIO
44
P0_3/SDA2
45
P0_4/SCL2
46
P0_5/SPICLK/PCM_CLK
47
P0_6/SPIDO/PCM_DOUT
48
P0_7/SPIDI/PCM_DIN
49
VSS
50
VDD
51
P2_3/ADC1
52
P1_7/CHARGE/INT7
53
RSTn
54
DC_stab
55
DC_I
56
DC_CTRL
57
DC_sense
58
VBAT1
59
LDO1_CTRL
60
LDO2_CTRL
61
61:P1_6/PON/INT6
62
62:P2_6/stop_charge
63
63:LDO1_Sense
64
AVS2
65
AVD2
66
LSRn/REF
67
LSRp/REF
68
MICn
69
VREFm
70
VBUF
71
AGND
72
MICp
73
VREFp
74
P3_0
75
P1_4/INT4n
76
P1_3/INT3n
77
P2_2/CLK100
78
78:AVS_sense
79
ADC3
80
ADC0
C7
J15P
R39
10K
(1005)
R40
10K
(1005)
LED1
GREEN
LED4
GREEN
LED5
GREEN
LED6
GREEN
LED7
GREEN
R15
10
DOW
N
RIGHT
5
4
LEFT
8
7
R
TALK
9
SP
6
PUSH
SOFT_B
C27
K1.0
C28
K1.0
C30
K1.0
C33
K1.0
C32
K1.0
C31
K1.0
C34
K1.0
C35
K1.0
+2.5V
K0.1
C20
(1005)
K0.1
C24
(1005)
C52
K0.1
+2.5V
LED9
RED
LED2
GREEN
K0.1
C22
(1005)
K0.1
C72
(1005)
K0.1
C21
(1005)
K0.1
C19
(1005)
C58
K0.1
+2.5V
C18
K1000P
(1005)
J5
1
RS
2
CSB
3
SI
4
SCL
5
VDD
6
V4
7
V3
8
V2
9
V1
10
V0
11
VR
12
VOUT
13
CAP2-
14
CAP2+
15
CAP1-
16
CAP1+
17
VSS
18
RESTEB
R68
6.8K
(1005)
R69
F820K
R70
F430K
LED3
GREEN
Q7
R71
220
Q8
+2.5V
X1
10.368MHz
UP
SOFT_A
INT
1
2
3
#
*
0
+1.8V
R7
220K
VDD3
Q3
J2
1
BATTERY-
C39
K1.0
L4
10uH
VDD1
F1
5.6nH
L5
10uH
R47
5.6K
C5
6.3V10
R1
0.1R/0.1W
(2125)
TP20
J3
1
CHARGE+
Q1
G
S
D
D6
BATTERY
J4
1
CHARGE-
R57
68
R4
3
0.1R/0.1W
(2125)
D7
Q5
2SC4617RTL
TP21
L1
47uH
Q4
C4
D10P
C40
6.3V10
C3
K0.1
+1.8V
D1
SM140A-T
VDD2
C1
4V330
R5
470
R46
5.6K
BAT
C57
6.3V330
Q2
J1
1
BATTERY+
R72
1K
1005
R6
10K
Q9
S1
POWER
POWER
R12
39K
J100P
C93
R63
10K
(1005)
R60
100 (1005)
+2.5V
J100P
C94
R64
10K
(1005)
UTX
URX
JTAG
GND
R61
1K
(1005)
C82
NC
(2125)
C96
NC
(1005)
R65
NC
C41
NC
R73
100K
R81
4.7
R82
100
C97 D10P
R83
0
C100
D10P
CLEAR
MAIL
SOFT_C
R21
1K
(1005)
R20
1K
(1005)
J100P
C107
R89
180
(1005)
D10P
C91
(1005)
R88
180
(1005)
R87
180
(1005)
C71
D10P
(1005)
C101
NC
(1005)
K0.1
C37
(1005)
K0.1
C68
(1005)
C8
K0.22
K0.1
C23
(1005)
J100P
C111
(1005)
J100P
C112
(1005)
C108
D10P
(1005)
R92
0
R93
NC
(1005)
R94
NC
(1005)
C98
K4.7
NC
C102
(1005)
C99
NC
(1005)
Q1 0
R90
680K
R91
100K
(1005)
J100P
C113
C114
D10P
(1005)
C115
D10P
(1005)
C104
K1.0
C117
D10P
(1005)
C116
D10P
(1005)
K0.1
C119
(1005)
K0.1
C120
(1005)
K0.01
C118
L8
0
R95
0
C121
K1000p
Q11
R96
10K
1005
K1.0
C122
NC
D9
C6
D8P
R19
5.6M
RSSI
RDI
LE
TDO
SK
SIO
RESET
RFCLK
ROW2
ROW 1
ROW3
ROW
0
COL3
COL4
COL5
COL2
COL1
COL0
ROW0
COL5
COL4
COL3
COL2
COL1
COL0
ROW
2
ROW3
JTAG
UTX
URX
UTX
URX
JTAG
CD_AMP
SP_LED
LCD_RS
LCD_SCL
LCD_SI
LCD_CSB
STOP_CHARGE
ADC3
DC_I
DC_CTL
LDO1_CTRL
LDO2_CTRL
AVS_sense
KEY_LED
LDO2_CTRL
LDO1_CTRL
DC_CTL
DC_I
CHARGE
LCD_RS
LCD_CSB
LCD_SI
LCD_SCL
KEY_LED
SP_LED
STOP_CHARGE
ROW1
ADC3
LCD_RESET
AVS_sense
CHARGE
LCD_RESET
Lighted Key
LCD Back-Lit
SP-Phone LED
115kHz (TALK mode)
(When on charge)
1S
+3.3V
+2.5V
25mV p-p
0V
0.7V
TX DATA
RX DATA
(5)
(3)
(4)
(2)
(1)
(7)
(8)
(9)
(9)
(10)
(6)
NC : No Components
108
KX-TCD225UA / KX-TCA122UA / KX-TCA121UA
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