Panasonic KX-TCD235RUS / KX-TCD235RUT / KX-TCA121RUS / KX-TCA121RUT Service Manual ▷ View online
37 CIRCUIT BOARD (BASE UNIT_MAIN)
37.1. Component View
L10
L9
L7
L11
39
38
64
65
103
X1
32
27
1
26
17
17
16
16
1
32
11
10
L8
L3
L12
L14
L13
L5
L6
L4
C206
C170
C203
C102
C50
C193
C52
C75
C19
C35
C199
C199
C92
C119
C194
C55
C307
C306
C40
C108
C109
1
20
10
11
1
10
20
11
C76
C47
C45
C107
C41
C74
C207
C101
C24
C8
C114
C3
ANT_1
ANT_2
C29
C58
C304
C71
1
1
4
5
102
8
128
C25
C10
C11
C301
C69
C70
C27
C54
SDA2
C173
C51
C38
C372
C370
C21
C68
C48
C106
C42
C84
C53
C57
C87
C4
C157
C181
C153
C165
C180
C161
C155
C160
C166
C156
C164
C136
C159
C154C162
C163
C317
C316
C365
C364
C311
8
5
1
4
C140
C141
C143
C137
C138
C26
C30
C18
CN2
CN1
C15
C13
C91
C6
1
1
24
C14
C12
C80
C49
C22
C130
C36
C192
C2
C1
C9
C368
C56
C16
C20
C23
C103
C104
C302
C303
C305
C32
C17
C43
C81
C82
C79
C77
C322
C182
C361
C315
C86
C7
C318
C362
C319
C313
C312
C133
C168
C169
C171
C142
C145
C146
C147
C139
C28
C151
C150
C149
C158
C144
C167
D2
Q1
1
1
1
2
2
5
6
4
5
7
Q4
Q5
Q8
Q2
Q3
Q6
Q7
Q362
Q12
Q361
D311
R52
R54
R54
R26
R68
R17
R70
R107
R105
R155
R84
R154
R25
R23
R78
R51
R306
R45
R46
R71
R49
R39
R47
C46
R72
R99
R28
TP9
TP10
R61
R18
R19
R53
R162
R16
R106
R67
R69
R69
R158
R157
R156
R156
R145
RA4
RA5
R141
R140
R142
R140
R142
R150
R149
R148
R148
R159
R94
R95
A
R143
R153
R152
R151
MIC
R307
R302
R160
R96
R97
R55
R376
R40
R56
R57
R64
R65
R164
R163
R365
R374
R90
P2_4
P3_6
P1_0
P2_7
P3_0
R89
R88
R98
R76
R77
R82
R92
R91
R74
R73
P2_0
P2_6
P2_1
P3_7
P3_5
P3_1
P3_2
P3_4
48
25
P3_3
P1_5
P1_3
A
CSO
P1_4
P1_2
P1_1
P0_3
P0_4
P0_5
P0_6
P0_7
R366
R123
R122
R122
R3
R4
R2
R137
R125
R136
R130
R135
R128
R129
C314
C321
C367
C320
C363
R311
R313
R314
R308
R134
R131
R132
R133
R312
R362
R93
R372
R371
R373
R146
R126
R127
R127
R375
R11
R10
R121
RL
Y8
Y8
RL
Y9
Y9
RL
Y7
Y7
RL
Y10
Y10
RL
Y1
Y1
R32
R43
R86
R81
R80
R79
R44
R50
R42
R58
R85
R83
R48
R59
RA2
R27
R6
R5
R87
R147
R144
R301
RA7
RA6
RA1
R305
R303
R304
R62
R41
R24
R60
R38
R22
R63
R35
RA3
R369
R368
R75
R367
R370
R33
R363
R34
R361
R117
R120
R119
R161
R118
D3
D5
D17
D15
D4
E
E
J11
J10
J10
E
J1
J3
J6
J4
SA1
J2
J5
J8
J7
D11
D14
D7
IC3
IC8
IC9
IC10
IC4
IC2
IC1
IC11
D6
D361
DA1
SA2
D1
D10
D16
30
D12
CN6
D8
D9
D301
C90
C89
C88
TP6
D18
IC6
IC7
PbF
PQ
UP11280Z
KX-TCD235 CIRCUIT BOARD (Base Unit_Main (Component View))
IC11
(8V) IN
IC11
(2.5V) OUT
IC2
(RF Module)
IC1
(4.0V) OUT
IC1
(8V) IN
Bell Sound
(BBIC: 110)
BBIC: 21
(10.368MHz)
IC4
(BBIC)
RESET
(BBIC: 120)
Q3 Collector
(1.8V)
Q2 Collector
(3.0V)
KX
-T
CD2
35RUS
/
K
X
-T
C
D235R
UT
/
K
X
-T
C
A121R
US
/
K
X
-T
CA1
21RUT
93
37.2. Flow Solder Side View
LINE_DC
VDD1
L2R
DCP
2
1
DCM
VDD2
VDD3
VDD5
A_1
ANT
A_2
CLK
CN3
YELLOW
SP
CN4
A
BLACK
RED
CHARGE
VDD4
GND
PbF
PQUP11280Z
TP3
TX
TP4
RX
TP5
TP2
TP1
MIC
DCMW
BLUE
L2T
L1T
L1R
KX-TCD235 CIRCUIT BOARD (Base Unit_Main (Flow Solder Side View))
CLK
(10.368MHz)
VDD4
(2.5V)
(2.5V)
VDD2
(4.0V)
(4.0V)
VDD5
(1.8V)
(1.8V)
VDD3
(3.0V)
(3.0V)
KX
-T
CD2
35RUS
/
K
X
-T
C
D235R
UT
/
K
X
-T
C
A121R
US
/
K
X
-T
CA1
21RUT
94
38 CIRCUIT BOARD (BASE UNIT_OPERATION)
38.1. Component View
PbF
LCD
GREETING
ERASE
LEFT
UP
RIGHT
PLAYBACK
ANSWER
PAGE
3
2
12
6
5
9
8
0
1
1
30
1
CN901
4
7
#
MUTE
REDIAL
RECALL
DOWN
LED903
LED902
LED901
A
SP_PHONE
R901
Q901
R902
Q902
R903
Q903
PQUP11334Z
KX-TCD235 CIRCUIT BOARD (Base Unit_Operation (Component View))
KX
-T
CD2
35RUS
/
K
X
-T
C
D235R
UT
/
K
X
-T
C
A121R
US
/
K
X
-T
CA1
21RUT
95
38.2. Flow Solder Side View
KX-TCD235 CIRCUIT BOARD (Base Unit_Operation (Flow Solder Side View))
A
PbF
W1
PQUP11334Z
KX
-T
CD2
35RUS
/
K
X
-T
C
D235R
UT
/
K
X
-T
C
A121R
US
/
K
X
-T
CA1
21RUT
96
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