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Circuit Diagrams - JVC AV-21B116 Service Manual

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CIRCUIT DIAGRAMS

MAIN PWB CIRCUIT DIAGRAM [AV-21B116/B](1/4)(2/4)SHEET1
POWER LED(GREEN)
ON TIMER LED(RED)
C738
X
R796
10k
R740
3.9k
C712
.01
C725
C720
X
R746
.01
10k
C723
J006
X
FRONT
J004
IN
J003
C841
J002
1500p
VIDEO
REAR
R802
1
IN
75
REAR
AUDIO
OUT
R810
56
C842
X
C805
Q803
220/16
R811
220
C806
R807
470/16
68
LINE_V
R806
270
R815
C811
180
1
10/50
R816
R817
680
LINE_A
Q804
4.7k
*1
A_MUTE
C812
X
NOTE) 1.Refer to the parts list for the part number of IC702.
MAIN PWB ASS'Y(2/4) (FRONT LED)
SCG-1550A-BK
D704
R772
IC704
390
S702
S704
S701
S703
Q708
*3
R727
R771
R726
15k
0
Q710
4.7k
*3
C721
.033
CN10A
R728
R737
1k
100k
CN00A
K703
R741
C730
560
C744
.01
.01
K704
C729
180p
IC701
C709
*
.01
R738
10k
C722
100p
X701
Q702
*1
C711
C710
R714
.01
100/16
4.7k
K701
R720
X
R718
4.7k
R734
560
X
R713
R716
R715
4.7k
R706
R707
680
680
560
560
R712
4.7k
PIC_MUTE
SCL1
SDA1
MAIN PWB ASS'Y(1/4)
SCG-1550A-BK [AV-21B116/B]
Y161
Y975
Y001
Y002
R374
6.8K
S705
SPEAKER
R731
R730
4.7k
10K
R736
CN0S3
CN0S4
82k
X
X
J005
Y655
X
Y654
X
IC702
Y653
X
IC703
IC651
R662
R661
270
270
D655
*4
R739
R667
C664
10k
C706
100
100/16
.01
Q703
C663
*1
C705
C707
.001
D654
470/16
.01
*7
C655
10/50
R742
C656
LB
56k
1/50
R665
C724
R797
Q653
10k
15k
D656
150p
*2
*4
R656
8.2k
C657
100/25
C665
R655
.01
47k
R658
R657
D657
2.2k
2.2k
*4
LINE_V
Q302
Y976
*1
X
D305
C321
12p
D731
*4
D501
X302
*6
C504
X
D306
V_SYNC
V_OUT
R503
FBP
C308
C309
6.8k
100/16
.01
R401
C402
10K
C503
C502
X
R307
10/50
.01
1.2k
R306
C401
C437
SDA1
0
.47
.1
C316
10/50
R308
1.8k
IC301
SCL1
R301
0
C303
C304
10p
.47/50
C301
C341
680P
10/50
X301
C302
D341
*4
4.7/50
C113
R302
.0047
4.7k
C112
47/25
C365
C366
C367
1/50
1/50
1/50
2
R341
3.3K
2
C306
C307
.01
470/16
CN00T
SF102
MAIN PWB ASS'Y
(4/4)(CRT SOCKET)
C109
X
CN10T SHEET 2
MAIN PWB(3/4) SHEET2
(No.YA417)2-5
2-6(No.YA417)
CN0S5
Y658
X
Y657
Y656
H006
R668
5.6
D652
D651
*7
*4
R666
100
R664
C659
6.8k
4.7/50
C658
220/25
R660
C654
15k
470/16
D653
*4
R659
R653
R652
R654
4.7
330
1k
22k
C653
10/50
Q652
R651
C652
*1
4.7k
.047
Q651
C651
*1
AUDIO
VIDEO
C314
R321
LINE_A
.01
1.5k
Q301
C315
100/16
*2
R323
R324
10k
1k
R327
Y301
4.7M
x
C324
C313
Y302
R163
33/50
C164
3.3/50
0
*
C166
D301
*
*
C162
*5
R325
Y160
C322
X
C161
C317
1500p
X
.027/25
C323
*
Q161
.047/25
0.47/50
*
R322
2.7k
R161
*
R165
*
R166
CF161
*
*
CF162
*
AFT
C119
.47/50
C120
120p
C117
C305
.22
.47/50
R159
D302
R326
C325
L104
X
L001
180k
*5
100
10/50
R160
C003
X
R158
X
SF101
X
SF122
C121
R001
.01
L101
X
C114
R111
R114
R109
C103
*
C009
180
X
6
.8k
47/25
X
C104
C106
R103
.0047
C110
D102
C107
.0047
10
0
.0047
C111
Q102
X
*10
R112
R118
R115
R116
R117
10
X
X
X
X
R110
2.7k
CF103
CF102
Q103
R113
C105
X
X
C108
X
100
.0047
X
3.58/OTH
*
IC701
CF161
X
X
X
X
CF162
X
X
X
X
Q161
X
X
X
X
R161
X
1K
X
X
X
R162
X
1.2K
X
X
X
R163
X
2.2K
X
X
X
R164
X
220
X
X
X
R165
X
22
X
X
X
R166
X
820
X
X
X
C114
.01
X
0.1
0.1
0.1
C161
X
.01
X
X
X
C164
X
.01
X
X
X
C165
X
.01
X
X
X
C166
X
.1
X
X
X
TU001
TU001
*
R102
8.2
75
K001
C001
10/50
x
C004
470/16
D001
C002
.01
L002
X
C005
C006
.1
X
IC001
X
R002
220
R003
220
R004
C007
C008
56k
X
4.7/50
c21251001a.001_1/2

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