Panasonic WV-CW970 / WV-CW974 Service Manual ▷ View online
4-10
SCHEMATIC DIAGRAM OF POWER BOARD FOR WV-CW974
TO
UPPER BASE
CABLE (E21)
(FOR
POWER
CONNECTOR)
UPPER BASE
CABLE (E21)
(FOR
POWER
CONNECTOR)
TO
COMMUNICATION
BOARD
CN5
COMMUNICATION
BOARD
CN5
P side
S side
TO
FAN B
(MO4)
FAN B
(MO4)
TO
FAN A
(MO3)
FAN A
(MO3)
TO
FAN THERMOSTAT
(E16)
FAN THERMOSTAT
(E16)
TO
SENSOR
(E17)
SENSOR
(E17)
TO
AC HEATER
(E15)
AC HEATER
(E15)
F1
4A
250V
VS1
C8
0.1
D6
R3
560
IC2
1
REF
2
A
3
K
C13
0.1
E4
C12
OPEN
D7
1
2
3
E3
VS2
VS4
VS5
T1
2
3
4
5
1
6
7
8
9
10
11
R20
OPEN
L3
CN1
1
3
CN8
OPEN
1
AC L
3
AC N
AC L
AC N
J3
J4
CN3
1
FAN2
2
GND
R19
0
1/4W
CN2
1
FAN1
2
GND
E6
IC1
1
C
2
L
3
X
4
S
5
F
7
D
R18
C9
1
C11
0.01
C20
1
D3
C7
100/10
C17
330/25
C2
0.01
C3
0.01
C4
0.1
C1
0.33
D4
R5
180
3W
D1
D2
L4
22
Q2
1
2
2
3
3
4
Q1
1
4
D5
13
2
R1
1.1k
1/4W
1/4W
R2
1.1k
R12
2.2k
R10
22k
R6
22
R15
24k
R16
2k
R14
3.3k
R11
330
R13
OPEN
R4
4.7
R7
47
R8
47
R9
47
R17
6.8k
R21
470k
470k
C5
2200/50
C6
2200/50
C14
470/25
C15
470/25
C16
470/25
L1
1
4
3
2
L2
1
4
3
2
C18
0.1
CN4
1
THERMOSTAT1
3
THERMOSTAT2
THERMOSTAT1
THERMOSTAT2
CN5
1
3
CN6
1
HEATER1
3
HEATER2
F2
4A
250V
C19
0.01
C21
OPEN
C10
470p
E5
1
GND1
2
12V
3
LP
4
5
GND2
R22
39k
1/4W
Important safety notice
Components identified by " " mark have special characteristics for safety.
When replacing any of these components, use only manufacture's specified parts.
Components identified by " " mark have special characteristics for safety.
When replacing any of these components, use only manufacture's specified parts.
1
A
B
C
POWER BOARD
POWER BOARD
IC1
C2,C3
IC2
A4
Q1
B3
Q2
A3,B3
<INDEX>
2
3
4
5
D1
C2
D2
B2
D3
C3
D4
C3
D5
B2
D6
B3
D7
C4
CONDUCTOR VIEW OF MAIN BOARD
IC2
A2
IC3
A1,A2,B1
IC4
A2
IC5
A1
IC8
A1,A2
IC200
A1
IC201
A1,B1
IC203
B1,B2
IC204
B1
IC500
B2
IC501
B1
IC700
A2
Q1
A2,B2
Q4
A2
Q200
A1
Q204
OPEN
D200
A1
D300
OPEN
D301
B2
D500
B2
D501
A1,B2
D502
A2,B2
MAIN BOARD
(COMPONENT SIDE)
(COMPONENT SIDE)
<INDEX>
IC1
A2
IC6
A2
IC9
A1
IC10
A1,A2
IC14
A1,B1
IC112
B2
IC202
A2,B2
IC205
A2,B2
IC300
A2
IC301
A1,B1
IC305
A1
IC1501
A1
Q2
A1
Q3
A1
Q6
A2
Q202
B1,B2
Q203
OPEN
D2
A1,A2
D3
A1,A2
D4
A1
MAIN BOARD
(PATTERN SIDE)
(PATTERN SIDE)
<INDEX>
MAIN BOARD
MAIN BOARD
1
A
B
2
(COMPONENT SIDE)
1
A
B
2
(PATTERN SIDE)
5-1
CONDUCTOR VIEW OF AUTO TRACKING BOARD
(COMPONENT SIDE)
I C 1 8
C27
C28
C 3 8
C 4 0
C 4 1
C 4 2
C 4 6
C 6 9
C 2 2 4
C 2 2 5
C 2 2 6
C227
C229
C231
C232
C 2 3 6
C 9 7
C 9 8
D 5
D 6
L 5
L 6
L 7
L 9
L 1 1
L 1 4
L 1 5
L 1 6
L17
C116
C 1 1 8
25
24
48
1
I C 8
C 1 2 8
C136
C 1 5 7
C170 C 1 8 1
C 1 8 7
33
1
CN1
13
14
2
1
C N 2
X2
X 3
4
5
8
1
IC13
I C 1 4
I C 1 5
I C 1 6
4
5
8
1
I C 1 7
VCW970RY8A
PbF
C78
C105
C137
C91
C145
C146
C132
C139
C149
C159
C50
R372
C230
C131
C44
R353
C45
R354
R379
C183
C198
C201
C196
C173
C216
C166
C178
C190
C218
C167
C179
C142
R366
R367/
L100
C233
R368
C109
C96
C134
C188
C172
C200
C171
C202
C213
C155
C143
C88
C93
C86
C209
C123
C126
C140
C203
R371
C75
C72
C48
C53
C228
R227
R352
C43
R356
R355
C161
C197
C168
C176
C160
C122
C175
C217
C223
C154
C169
C151
C185
R175
C49
R174
R380
R186
R185
R324
C66
R189
R191
R328
R323
R326
R6
R7
R333
R335
R337
R339
R341
R343
R345
R347
R351
R349
R135
C47
R375
R329
R192
C62
R187
R190
C63
C65
R327
R325
C64
R188
C51
R134
R334
R336
R338
R340
R342
R344
R346
R348
R350
C180
C117
C113
C206
C193
C211
C192
C191
C208
C184
R370
C114
C119
C81
C84
C85
C95
C150
C111
C101
C67
C89
C103
C135
R226
C94
C90
C120
C76
AUTO TRACKING BOARD
AUTO TRACKING
BOARD
(COMPONENT SIDE)
BOARD
(COMPONENT SIDE)
IC8 A1,A2
IC13 C2
IC14 C2
IC15 B2,C2
IC16 OPEN
IC17 OPEN
IC18 OPEN
IC13 C2
IC14 C2
IC15 B2,C2
IC16 OPEN
IC17 OPEN
IC18 OPEN
D5 A1,B1
D6 B1
D6 B1
<INDEX>
(COMPONENT SIDE)
1
A
B
C
2
5-2
CONDUCTOR VIEW OF AUTO TRACKING BOARD
(PATTERN SIDE)
I C 1 9
R 2 1 0
C 3 3
C34
C 3 5
C 3 6
C68
C3
D9
R103
R104
R105
R107
R108
R109
L1
C 1 0 8
28
27
54
1
IC3
28
27
54
1
I C 4
IC5
IC6
Z 1 0
Z 1 1
Z12
Z13
R 6 4
R 6 5
C 1 8 6
Z1
Z2
Z3
IC10
Z4
Z 5
Z 6
Z 7
Z 8
Z 9
VCW970RY8A
PbF
R378
R243
C24
R48
R47
R46
R45
R44
C23
C22
C21
R238
R241
C20
R244
R376
R363
R288
R289
R364
R275
R283
R263
R264
R265
R268
R284
R285
R255
R374
R373
R362
R365
R377
TD77
TD80
TD79
TD81
R253
R215
R214
C182
R287
R360
R361
R358
R359
C19
R77
R76
R75
C30
C29
R28
R27
R26
R25
R24
C18
C17
C16
C15
C32
C31
R94
R93
R 92
C6
TD14
R222
R240
TD99
TD98
R254
R224
R225
R369
C87
R211
R357
R330
TD91
TD87
TD84
TD86
TD83
TD89
TD90
TD82
TD85
TD92
TD76
TD97
R331
TD93
AUTO TRACKING BOARD
AUTO TRACKING
BOARD
(PATTERN SIDE)
BOARD
(PATTERN SIDE)
IC3 A1,A2
IC4 A1,A2,
B1,B2
IC5 A2,B2
IC6 B2
IC10 B1,B2,
C1,C2
IC19 C1
IC4 A1,A2,
B1,B2
IC5 A2,B2
IC6 B2
IC10 B1,B2,
C1,C2
IC19 C1
D9 B1,C1
<INDEX>
(PATTERN SIDE)
1
A
B
C
2
5-3
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