Panasonic KX-TCD825RUS / KX-TCD825RUT / KX-TCA181RUS / KX-TCA181RUT Service Manual ▷ View online
32 FOR SCHEMATIC DIAGRAM
32.1. Base Unit (SCHEMATIC DIAGRAM (BASE UNIT))
Notes:
1. DC voltage measurements are taken with voltmeter from the negative voltage line.
2. This schematic diagram may be modified at any time with the development of new technology.
32.2. Handset (SCHEMATIC DIAGRAM (HANDSET))
Notes:
1. DC voltage measurements are taken with an oscilloscope or a tester with a ground.
2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
32.3. Charger Unit (SCHEMATIC DIAGRAM (CHARGER UNIT))
Notes:
1. DC voltage measurements are taken with voltmeter from the negative voltage line.
2. This schematic diagram may be modified at any time with the development of new technology.
89
KX-TCD825RUS / KX-TCD825R UT / KX-TCA181RUS / KX-TCA181RUT
33 SCHEMATIC DIAGRAM (BASE UNIT)
Charge Terminal
+8V
SA1
3000V
+2.5V
+2.5V
+2.5V
+3.3V
C1
NC
( )
C38
K0.1u
(1005)
C180
NC
C181
D10p
C7
K1u
C77
NC
( )
C17
K220p
(1005)
C34
K0.1u
(1005)
C29
NC
( )
C37
K0.1u
(1005)
C101
K1000p
C203
D10p
(1005)
C25
NC
(1005)
( )
C187
NC
( )
K680p
C15
C44
K0.1u
(1005)
K680p
C14
C189
( )
C39
K1u
C173
(1005)
( )
C42
D6p
C22
K220p
(1005)
C65
K0.1u
(1005)
C191
D10p
C198
D10p
K0.1u
C53
(1005)
C205
NC
(1005)
( )
C45 K0.1u
(1005)
C190
NC
( )
C8
NC
( )
C32
K0.022u
(1005)
C18
( )
C170
(1005)
( )
NC
R105
10K
(1005)
R24
100
F0.2K
R9
(1005)
R22
100K
(1005)
10K
R26
R106
180K
R67
NC
( )
R107
180K
R68
NC
( )
F0.12K
R8
(1005)
100K
R23
R56
2.2K
(1005)
100K
R69
R57
2.2K (1608)
100K
R70
2.7K
R25
(2125)
R27
100K
(1005)
1M
R16
1M
R17
2.2K
R28
R40
3.3M
(1608)
L7
L6
C2
16V100u
6.3V330u
C3
16V10u
C4
C102
K1000p
C107
K1000p
C11
K1u
C114
C2p
(1005)
C9
K2.2u (2125)
X1
10.368MHz
( )
J1
NC (2125)
( )
J2
NC (2125)
( )
C19
NC
D6
22V
( )
J11
NC
Q5
C43
J27p
1
VO
2
NC
3
GND
4
CN
5
CONT
6
SUB
7
VIN
1
CD
2
+VREF
3
+VIN
4
-VIN
5
VOUT1
6
V+
7
GND
8
VOUT2
K1.0U
C251
K1.0U
C252
K470p
C250
+4.0V
K1.0U
C254
K1.0U
C255
K0.1U
C256
D19
68K
R145
C261
K2.2U
(2125)
0
R146
DCM
DCP
L2R
LINE_DC
( )
R144
(1005) NC
VDD2
VDD3
( )
Q1
NC
CN1
TP26
TP27
TP28
TP29
1
2
TP15
TP16
D1
( )
D11
( )
D12
( )
D2
NC
TP24
SP-
RINGER-
TP25
SP+
RINGER+
( )
C212
NC
C167
18
(2125)
C75
( )
NC
D10p
C206
NC
R138
( )
NC
C171
D16
( )
( )
NC
C172
( )
( )
NC
C262
Q15
NC
R139
NC
R141
( )
( )
( )
( )
NC
R147
( )
( )
NC
R140
+2.5V
0
R148
( )
( )
Q16
CN2
1
2
3
4
5
6
7
8
9
10
NC
R142
( )
NC
C174
C27
D10p
(1005)
Q90
VDD4
1 INT1n/P1[1]
2 VDDIO2
3 VDD3
4 VSS4
5 SDA1/P2[5]
6 SCL1/P2[4]
7 INT5n/VDDE/P1[5]
8 INT2n/P1[2]
9 AVD
2 VDDIO2
3 VDD3
4 VSS4
5 SDA1/P2[5]
6 SCL1/P2[4]
7 INT5n/VDDE/P1[5]
8 INT2n/P1[2]
9 AVD
10 AVS
11 CAP
12 Xtal1
13 VSSRF
14 RFCLKp
15 RSSI/RFCLKm
16 VDDRF
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
P3[1]/PD1
24
P3[2]/PD2
25
P3[3]/PD3
26
P3[4]/PD4
27
TDOD/P3[5]/PD5
28
P3[6]/PD6
29
VSS29
30
VDDIO30
31
VDD31
32
PCM_FSC/INT
0n/P1[0]
0n/P1[0]
33
P0[0]/UTX
34
P0[1]/URX
35
P0[2]/JTIO
36
P0[3]/SDA2
37
P0[4]/SCL2
38
P0[5]/SPICLK/PCM_CLK
39
P0[6]/SPIDO/PCM_DOUT
40
P0[7]/SPIDI/PCM_DIN
41
VSS41
42
VDD42
43
P2[3]/ADC1
44
P1[7]/CHARGE/INT7
45
RSTn
46
VBAT1
47
LDO1_CTRL
48
LDO2_CTRL
49
LDO1_Sense
50
A
VS2
51
A
VD2
52
CIDINn
53
LSRn/REF
54
LSRp/REF
55
RINGING
56
MICn/CIDOUT
57
VREFm
58
A
GND
59
MICp
60
CIDINp
61
P1[4]/INT4n
62
P1[3]/INT3n
63
ADC2
64
ADC0
K1500p
C12
K1500p
C13
RE1
1
2
3
VSS
4
5
VDD
RE1
1
2
3
VSS
4
5
VDD
L8
1
Adj/GND
2
VOUT
3
VIN
+3.3V
C26
K1000p
( )
NC
C55
( )
NC
C263
D10p
C264
( )
C74
NC
D100
D101
10K
R150
10K
R151
10K
R152
1K
R154
K1000p
C300
47
R153
K1000p
C305
K1000p
C306
K1000p
C303
K1000p
C304
K1000p
C302
1K
R155
1K
R156
1K
R157
1K
R158
1K
R159
K0.068
C258
+2.5V
R90
3.9K
R91
6.8K
(1005)
R92
2.2K
(1005)
R94
22K
(1005)
R93
(1005)
1K
R37
0
(2125)
L14
120
L15
L16
D10p
C311
R32
100
D10p
C314
D10p
C315
C184
D10p
D10p
C213
K1000p
C301
C36
J220p
Q4
15K
R149
100p
C259
Q100
D3
1
2
3
4
18 (6332)
R4
18 (6332)
R5
D10p
C312
D10p
C313
J10
0
R80
(3216)
10
R79
680
R78
10K
D15
0
D14
0
R81
(3216)
12K
R38
150K
(1005)
1
A0
2
A1
3
A2
4
GND
5
SDA
6
SCL
7
WP
8
VCC
C80
(5750)
250V K0.47u
Q12
RE1
C30 K0.1u
K0.01u
C90
(1005)
100
R160
10K
R162
( )
NC
C318
K470p
C319
TP_RLY1
L1T/TP_RLY2
L2T/TP_RLY3
L1R/TP_RLY4
TP_RLY5
RSSI
TDO RDI SK SIO LE RESET
RD
Y
RFCLK
Charge +
Charge -
For NL
For JT
IC9
IC10
IC8
BBIC
IC11
IC12
IC1
IC3
EEPROM
NC : No Components
(1)
(2)
(3)
(5)
(4)
(6)
(7)
(8)
(9)
(10)
(11)
(11)
(12)
(13)
7.8V
2.1V
3.3V
4.0V
SP OUT
ON: 2.5V
OFF: 0V
ON: 2.5V
OFF: 0V
TAM Play/Ringer
Signal.
Signal.
25mV p-p
0V
0.7V
C_ID, Bell Signal
Bell signal
90
KX-TCD825RUS / KX-TCD825R UT / KX-TCA181RUS / KX-TCA181RUT
+8V
+1.8V
+2.5V
+2.5V
+2.5V
+2.5V
+2.5V
+3.3V
+3.3V
C48
K0.1u (1005)
K0.1u (1005)
C192
( )
J150p
C164
(1005)
C143
D10p
C149
D10p
C194
( )
K1000p
C136
(1005)
C138
( )
NC
C162
D10p
(1005)
C195
NC
( )
K4700p
C215
C141
C3p
C168
NC
( )
C142
D10p
C28
K0.22u
K0.22u
K1u
C46
(2125)
C197
D10p
D10p
C154
(1005)
C144
D10p
C151
K4.7u
K0.056u
C47
(1608)
C159
C2p
(1005)
D10p
C156
(1005)
D10p
C158
(1005)
K0.1u
C50
C2p
C155
(1005)
C199
( )
C161
C2p
(1005)
C122
J100p
(1005)
C163
D10p
(1005)
K2.2u
C40
(2125)
C160
D10p
(1005)
K0.1u
C24
(1608)
C123
J100p
(1005)
C145
D10p
C166
(1005)
( )
NC
C165
(1005)
( )
NC
C121
(1005)
( )
NC
C150
( )
NC
C137
( )
NC
C146
( )
NC
C52
( )
NC
C169
(1005)
K0.1
27 1/2W
R46
(4532)
R64
1K
470
R116
(2125)
R55
1K
(1005)
R124
0
(1005)
18
R39
2.2K
R115
R125
0
(1005)
R119
270
8.2K
R43
R118
180
100K
R71
470K
R72
100K
R47
R85
3.3K
(1005)
47K
R48
R88
10K
(1005)
R86
1K
(1005)
56
R49
R87
10K
(1005)
12 1/2W
R45
(4532)
27K
R42
R84
100
R117
1K
(1005)
R121
( )
NC
R120
( )
NC
R130
(1005)
10K
R59
( )
NC
R58
( )
NC
R126
(1005)
( )
NC
L4
0
L3
50V10u
C49
C109
K1u
(2125)
Q8
16V10u
C5
30V
D4
Q2
Q6
DA
1
RE1
1
2
3
J22p
C153
D7p
C157
( )
D10
ANT_2
ANT_1
ANT
A_2
A_1
CLK
J101
J104
TP23
J103
J102
TP9
TP10
VDD1
Q3
( )
D18
NC
( )
D5
RE1
D13
( )
SW1
C130
( )
C214
( )
R127
100
(1005)
C217
( )
NC
C183
NC
( )
( )
R135
NC
R132
10K
(1005)
1 GND1
2 ANT2
3 VCCPA
4 GND2
5 GND3
6 VCC_OC
7 GND4
8 RSSI
9 SYRI
2 ANT2
3 VCCPA
4 GND2
5 GND3
6 VCC_OC
7 GND4
8 RSSI
9 SYRI
10 GND5
11
GND6
12
SYEN
13
SYD
A
14
SYCL
15
GND7
16
RX_D
A
TA
17
GND8
18
TXDA
19
GND9
20
RESET
21
ANT1
22
GND10
23
GND11
24
GND12
25
GND13
26
GND14
27
GND15
28
GND16
29
GND17
30
GND18
31
A_1
32
GND19
K1u
C135
(2125)
C140
C2p
D10p
C57
C134
D10p
L10
L11
D10p
C265
( )
NC
C266
16M
1
RDY/BUSY
2
RESET
3
WP
4
NC4
5
NC5
6
NC6
7
VCC
8
GND
9
NC9
10
NC10
11
NC11
12
NC12
13
CS
14
SCK
15
SI
16
SO
17
NC17
18
NC18
19
NC19
20
NC20
21
NC21
22
NC22
23
NC23
24
NC24
25
NC25
26
NC26
27
NC27
28
NC28
29
NC29
30
NC30
31
NC31
32
NC32
L12
( )
L13
NC
R134
1K
(1005)
K0.01u
C41
(1608)
R51
0
R50
D10p
( )
C196
NC
D10p C310
D10p
C316
R133
(1005)
330
C147
Z0.1u
D10p
C317
2.2K
R44
470
R52
820
R54
( )
C108
(2125)
NC
C201
D10p
15
R161 D20
C76
Z0.1u
TDO
RFCLK
LE
RSSI
RESET
RDI
SK
SIO
RESET
RDY
RF Module
DC_IN
GND
JTAG
RX
TX
KX-TCD825 SCHEMATIC DIAGRAM (BASE UNIT)
NC : No Components
IC2
RF
Module
IC5
FLASH MEMORY
(1)
(2)
(3)
(5)
(4)
(6)
(7)
(8)
(9)
10)
11)
12)
13)
2.5Vp-p
10.368MHz
Loop Current
TX_AF
RX_AF
RX DATA
TX DATA
3.3V
91
KX-TCD825RUS / KX-TCD825R UT / KX-TCA181RUS / KX-TCA181RUT
34 SCHEMATIC DIAGRAM (BASE UNIT_OPERATION)
SW5
ERASE
SW4
ANS_ON/OFF
SW8
PLAY/STOP
SW1
SKIP
SW7
LOCATOR
SW3
VOL_UP
SW6
VOL_DOWN
CN10
1
2
3
4
5
6
7
8
9
10
SW2
REPEAT
KX-TCD825 SCHEMATIC DIAGRAM (BASE UNIT_Operation)
92
KX-TCD825RUS / KX-TCD825R UT / KX-TCA181RUS / KX-TCA181RUT
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