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MAIN PWB CIRCUIT DIAGRAM [AV-21YMG4/G,AV-21YMG4/S] (2/3),(3/3)
!
F901
CN0PW
!
R910
!
!
VA901
C910
!
X
S901
AC110V-AC240V
!
50Hz/60Hz
LF901
!
TH901
CNDEG
Y909
BW
!
DEG COIL
Y910
!
BW
C901
R904
X
C909
!
X
LF902
!
C902
R901
D901
!
C904
!
.001
C903
R930
!
C906
C905
D926
R902
R903
K921
K922
C931
C924
4.7/50
R923
C926
1.8
C928
220p
R921
D927
R934
220
5.6K
C922
D935
D934
.1
X
R924
68K
D928
IC921
!
D932
C925
D933
22/50
*
Note: 1. Refer to part list for the part number of IC701 and IC702.
2. Refer to page 2-15 for voltages of this circuit diagram.
3. Refer to page 2-16 for waveforms of this circuit diagram.
IC972
!
R972
D974
X
C992
X
Y972
!
C976
C975
C991
4700p
470/16
IC973
Y965
R965
X
C929
C955
!
K955
CP955
!
D955
T921
C979
C960
100/25
2200/35
C915
R970
X
820
C962
C963
C953
.1
.001
!
C984
CP953
47/25
K953
D953
C958
330/35
IC975
R977
X
L954
Y977
K957
BW
X
C952
!
CP952
R986
C989
10k
.1
R932
D952
C957
1000/16
C964
C949
100/35
1000/10
D922
C940
Y950
X
L951
D951
D921
*6
C951
C956
R980
R982
4.7K
1k
R983
0
Q981
Q982
*1
*1
C987
22/50
Y913
BW
Y914
Y915
Y916
BW
Y917
!
R991
Y918
8.2M
Y971
BW
GND
GND
!
C993
.001
MAIN PWB ASS'Y (1/3)
SCW-1312A-H2 [AV-21YMG4/G]
SCW-1313A-H2 [AV-21YMG4/S]
ABL
VER_PROTECT
PROTECT
STB1
STB
ABL
HFB
HFB
V_SHIFT
VDRB-
12V
VDRA+
NECK
NECK
P_ON/OFF
PROTECT
V_SHIFT
3.3V_STB
P_ON/OFF
R475
H_DRIVE
X
32V
VER_PROTECT
12V
D472
5V
*3
PROTECT
Q471
X
8V
IC401
R471
3.3V_STB
1M
C471
R791
4.7/50
STB1
A_VCC
D471
R473
L972
68K
3.3V_STB
R474
C428
D791
220K
100/35
C977
C978
47/16
47/16
C426
D422
X
D423
12V
C423
C401
18p
R401
R402
470/16
X
10K
R422
R425
R424
15K
X
R403
15K
R428
12V
C421
0
X
4.7/50
D401
D971
D973
X
L973
*3
Q401
*3
R404
R429
R426
X
PROTECT
0
C425
X
X
2200/25
C402
R405
C980
C981
X
3.3K
100/16
100/16
C430
C420
R976
R434
390
P_ON/OFF
X
6.8K
VDRB-
L421
R431
BW
8V
VDRA+
R427
X
X
R439
R440
R412
R411
X
470
C435
4.7K
4.7K
C961
X
R448
C436
1
PROTECT
D977
*3
D975
*3
L975
5V
R981
10K
C967
C968
47/16
47/16
R962
32V
!
Q522
D962
R524
T521
STB
R522
C523
56
47/35
D981
R984
15k
Q521
HFB
R520
C520
C521
100
.1
.0033
R985
C988
H_DRIVE
18k
47/16
R521
C522
D520
1K
8200p
*3
(No.YA126)2-7
2-8(No.YA126)
IC351
C351
100p
C356
R354
.0056
150
C355
.0056
C354
.0056
C380
R597
X
X
C352
4.7/250
D594
R596
X
X
C381
Q592
X
X
R595
D593
X
X
Q591
X
R594
C593
X
X
Q371
X
Q372
D591
D592
X
R592
X
X
X
R593
C591
X
C592
X
X
Q373
X
R591
D371
X
X
CN10T
R430
X
Q402
X
L551
!
T522
C556
X
L525
C555
BW
R554
!
R555
1.8K
D555
D554
X
R533
X
C551
R551
C553
D551
X
*6
C527
X
C582
D523
R572
X
C529
X
C572
100/10
R527
X
R571
C571
Y570
Y571
GND
GND
Y501
BW
Y502
BW
L522
*
R528
C530
X
X
Y581
Y582
X
CN0HV
!
DEF YOKE
HS351
!
!
SK351
R358
R359
R360
SG351
SG353
X
X
SG352
X
!
R371
X
SG354
X
R372
C358
X
C359
X
R373
X
R377
X
R375
C371
X
X
Q374
X
MAIN PWB ASS'Y (3/3)
R376
X
D372
(CRT SOCKET)
X
K355
SCW-1312A-H2 [AV-21YMT4/G]
SCW-1313A-H2 [AV-21YMG4/S]
R369
120K
R370
390K
C350
X
CN10U
CN00U
R585
0
D583
R581
X
R582
1.8K
27K
D581
*6
R583
39K
D582
C581
R584
L530
.1
X
!
R530
D530
X
*6
C532
10/250
C580
X
ADJUSTMENT
CONNECTOR
R573
X
Q571
R574
22K
Q572
D571
*1
R575
3.9K
C573
R576
47/25
10K
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