Read Panasonic KX-TCD825RUS / KX-TCD825RUT / KX-TCA181RUS / KX-TCA181RUT Service Manual online
35 SCHEMATIC DIAGRAM (HANDSET)
AG
+3.3V
+1.8V
+4.0V
+4.0V
+3.3V
+1.8V
+1.8V
+3.3V
+3.3V
C16 K0.1u
C56
D10p
C7
D10p
C38
K470p
D10p
C14
C6
( )
NC
K0.1u
C20
C4
D10p
K0.1u
C21
K0.1u
C24
D10p
C92
C3
K0.1u
C76
(
)
NC
C12
K1u
C78
(
)
NC
J100p
C93
C79
(
)
NC
J100p
C94
C95
(2125)
(
)
NC
C13
K0.1u
D10p
C77
C18
K1000p
D10p
C75
C109
K0.1u
R9
5.6K
R37
33
R38
33
R21
1K
R20
1K
R72
1K
R25
330
R4
15K
R29
2.2K
R60
1K
10
R80
R61
10K
R5
470
R35
27K
R57
68
R6
10K
R7
220K
L4
L5
D1
C40
6.3V10u
C57
6.3V330u
C5
6.3V10u
Q3
Q10
F1
Q1
S
G
D
Q2
D8
IC2
1
CD
2
+VREF
3
+VIN
4
-VIN
5
VOUT1
6
V+
7
GND
8
VOUT2
D5
Q4
D7
D6
Q5
TP10
TP11
TP16
TP12
D4
+1.8V
BATTERY+
BATTERY-
CHARGE+
CHARGE-
R47
5.6K
R46
5.6K
Q18
C108 K1u
C107
K1u
R90 0
+4.0V
+3.3V
+3.3V
Q19
R153
10K
C1
4V330u
R43
0.1 1/8W
C80 K2.2u
21-25
R74
1
C86
K1u
C15
K1u
J33p
C17
R36
47K
C11
(
)
NC
C27
(
)
NC
C28 (
)
NC
( )
C127 NC
( )
C128 NC
SW1
1
2
3
4
5
6
R1
47m
K0.1u
C29
+4.0V
BAT
+3.3V
R18
100K
(
)
R93
+BAT
CN9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
10K
R95
IC1
BBIC
1
VDDIO-1
2
VSS-2
3
AD8
4
AD9
5
AD10
6
AD11
7
AD12
8
AD13
9
AD14
10
P3[7]/PD7
11
P3[1]/PD1
12
P3[5]/PD5
13
P3[4]/PD4
14
P3[3]/PD3
15
P3[2]/PD2
16
VDD-16
17
VSS-17
18
RFCLK
19
VDDRF
20
VSSRF
21
XTAL1
22
CAP
23
AVS
24
AVD
25
RSSI
26
RDI
27
CMPREF
28
TDO
29
AD15
30
AD16
31
AD17
32
AD18
33
AD19
34
AD20
35
AD21
36
AD22
37
AD23
38
LE
39 SO
40 SK
41 DAC/ADC2
42 P3[6]/PD6
43 RDN
44 WRN
45 MI/READY
46 SCLK
47 UTX/P0[0]
48 URX/P0[1]
49 JTIO/P0[2]
50 PCM_FSC1/P0[3]
51 PCM_FSC0/P0[4]
52 PCM_CLK/P0[5]
53 PCM_DOUT/P0[6]
54 PCM_DIN/P0[7]
55 VDDIO-55
56 VSS-56
57 DREQ0n/INT0n/P1[0]
58 DACK0n/INT1n/P1[1]
59 ACS1/DREQ1n/INT2n/P1[2]
60 ACS0
61 ACS2/DACK1n/INT3n/P1[3]
62 HOLDn/INT4n/P1[4]
63 VDDE/HOLDACKn/INT5n/P1[5]
64 BE1n
40 SK
41 DAC/ADC2
42 P3[6]/PD6
43 RDN
44 WRN
45 MI/READY
46 SCLK
47 UTX/P0[0]
48 URX/P0[1]
49 JTIO/P0[2]
50 PCM_FSC1/P0[3]
51 PCM_FSC0/P0[4]
52 PCM_CLK/P0[5]
53 PCM_DOUT/P0[6]
54 PCM_DIN/P0[7]
55 VDDIO-55
56 VSS-56
57 DREQ0n/INT0n/P1[0]
58 DACK0n/INT1n/P1[1]
59 ACS1/DREQ1n/INT2n/P1[2]
60 ACS0
61 ACS2/DACK1n/INT3n/P1[3]
62 HOLDn/INT4n/P1[4]
63 VDDE/HOLDACKn/INT5n/P1[5]
64 BE1n
65
BE0n
66
SCL2/P3[0]
67
SDA2
68
DAB0
69
DAB8
70
DAB1
71
DAB9
72
DAB2
73
DAB10
74
DAB3
75
DAB11
76
VSS-76
77
VDD-77
78
VDDIO-78
79
P2[0]/PWM0/SPIDI
80
P2[1]/PWM1/SPICLK
81
P2[2]/ADC0/CLK100
82
P2[3]/ADC1
83
P2[4]/SCL1
84
P2[5]/SDA1
85
DAB4
86
DAB12
87
DAB5
88
DAB13
89
DAB6
90
DAB14
91
DAB7
92
DAB15
93
P2[7]/DC_CTRL/SPIDO
94
DC_I
95
P1[6]/PON/INT6n
96
P1[7]/CHARGE/INT7n
97
P2[6]/stop_charge
98
VBAT3/RINGING
99
DC_stab
10
0
100: DC_Sense
10
1
101: AVS_sense
102
102: ADC3
103
LDO1_Sense
104
LDO1_CTRL
105
LDO2_CTRL
106
VBAT2
107
VBAT1
108
AVS2
109
AVD2
110
LSR+/REF
111
LSR-/REF
112
LSR_HS/CIDIN-
113
VREF_HS/CIDOUT
114
MIC-
115
VREF-
116
VBUF
117
AGND
118
MIC+
119
VREF+/CIDIN+
120
RSTn
121
AD0
122
AD1
123
AD2
124
AD3
125
AD4
126
AD5
127
AD6
128
AD7
D9
D10
D11
D10p
C60
K1000p
C35
D10p
C90
D10p
C89
D10p
C91
R26
100
10K
R50
100K
R71
C8
K0.22u
D10p
C87
J47u
C36
IC21
1
GND
2
NC
3
VCC
4
AGND
5
SD
6
RXD
7
TXD
8
VLED
R15
27
IC3
1
1A
2
1B
3
2Y
4
GND
5
2A
6
2B
7
1Y
8
VCC
R81
1K
C67
J100p
C66
J22p
C65
J22p
C64
J22p
R12
39K
C58
K1u
R82
1K
R83
1K
100
R58
0
R62
( )
C72
+3.3V1
( )
C130
+3.3V1
+3.3V1
( )
C132
(
)
C133
NC
R201 0
R202
0
39
R56
39
R55
L6
22nH
K0.1u
C10
K0.1u
C19
C22
K0.1u
K0.1u
C23
K0.1u
C34
C61
K0.1u
5.6
R8
1000
RA2
1
2
3
4
5
6
7
8
1000
RA1
1
2
3
4
5
6
7
8
K0.068u
C37
K0.068u
C68
TP18
TP17
UTX
URX
GND
JTAG
22nH
L7
C136
K0.1u
(
)
R59
NC
C129D5p
D5p
C135
0
R65
K1u
C39
R64
10K
R63
10K
L1
MIC
1
HSMIC(+)
2
HSMIC(-)
R10
F39K
R11
F15K
R41
27K
R40
27K
R39
27K
R19 3.3M
100
R179
(
)
R79
NC
LED8
X1
10.368MHz
R3
F150K
R2
F56K
R152
K270K
D14
SP_TEST1
SP_TEST2
D15
Q9
R17
560
REV_TEST2
REV_TEST1
TP19
TP20
TDO
P3[6]
P3[4]
SK
SIO
P3[6]
WR
MI/READY
COL4
COL3
COL2
COL3
COL2
COL0
CE_FLASH
ACS2
UB
LE
A20 A19 A18 A17 A16 A15
RDI
RSSI
RFCLK
A11 A10 A9 A8
LB
DQ0
A7
A6
A5
A4
A3
A2
A1
A22
COL5
COL6
COL7
COL3
COL4
A12
A13
A14
ROW0
P3[4]
RD
COL1
CE_SRAM
DQ8 DQ1 DQ9 DQ2 DQ10 DQ3 DQ11
COL7
DQ4 DQ12 DQ5 DQ13 DQ6 DQ14 DQ7 DQ15
ROW0
COL5
COL6
COL7
COL0
COL2
COL4
COL3
COL1
1ROW2
1ROW1
1ROW0
ROW2
ROW1
COL5 COL6
PUSH
kEY_BL
Key-BL
SEIWA
LED
22uH
NC : No Components
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(14)
(15)
(16)
(17)
(18)
(19)
(19)
(20)
(21)
(22)
(22)
(23)
(24)
(25)
(25)
(26)
(27)
(27)
(28)
(29)
(30)
(3)
(4)
(4)
(2)
(1)
TALK (Back light OFF) : 3.65V
SP-Phone
ON: 3.3V
OFF: 0V
ON: 3.3V
OFF: 0V
.SP-Phone
RX_AF
.Beep/Ringer
RX_AF
.Beep/Ringer
TX_AF
1.5V DC Suply
to MIC
to MIC
115kHz (TALK mode)
25mV p-p
0V
0.7V
When on charge
1sec
USB
Use: 0V
No-use: 3.3V
Use: 0V
No-use: 3.3V
94
KX-TCD825RUS / KX-TCD825R UT / KX-TCA181RUS / KX-TCA181RUT
Click on the first or last page to see other KX-TCD825RUS / KX-TCD825RUT / KX-TCA181RUS / KX-TCA181RUT service manuals if exist.