JVC AV-21V115/B User manual

SERVICE MANUAL
COPYRIGHT © 2005 Victor Company of Japan, Limited No.YA340
2005/11
COLOUR TELEVISION
YA340200511
AV-21V115/B
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
BASIC CHASSIS
CW
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1-8 (No.YA340)
3.2 REPLACEMENT OF MEMORY IC
3.2.1 MEMORY IC
This TV uses the following memory IC.
Memory IC: IC702 on MAIN PWB
The memory IC memorizes data for correctly operating the video
and deflection circuits. When replacing the memory IC, be sure
to use the same type IC written with the initial values of data. In
other words, use the specific IC listed in "PRINTED WIRING
BOARD PARTS LIST". For its mounting location, refer to
"ADJUSTMENT LOCATIONS".
3.2.2 PROCEDURE FOR REPLACING MEMORY IC
1. Power off
Switch the power off and unplug the power cord from the wall
outlet.
2. Replacing the memory IC
Replace the memory IC with new one. Be sure to use the
memory IC written with the initial data values.
3. Power on
Plug the power cord into the wall outlet and switch the power on.
4. Check and setting of SYSTEM CONSTANT SET:
(1) Press the [DISPLAY] key and the [PICTURE MODE] key
on the remote control unit simultaneously.
The SERVICE MENU screen will be displayed.(See
Fig.1.)
(2) In the SERVICE MENU, press the [DISPLAY] key and
[PICTURE MODE] key simultaneously. Then, the
SYSTEM CONSTANT SET screen will be
displayed.(See Fig.2.)
(3) Check whether the setting values of the SYSTEM
CONSTANT SET are the same as those indicated in
Table 1.
If the value is different, select the setting item with the
MENU [] / [] key, and set the correct value with the
MENU [] / [] key.
(4) Press the [DISPLAY] key twice to return to the normal
screen.
5. Receive channel setting
Refer to the OPERATING INSTRUCTIONS and set the
receive channels (channels preset).
6. User setting
Check the user setting values in Table 2 and Table 3. If setting
value is different, set the correct value.
For setting, refer to the OPERATING INSTRUCTIONS.
7. Setting of SERVICE MENU
Verify the setting for each setting item in the SERVICE
MENU.(See Table 4.) If readjustment is necessary, perform
adjustment referring to "ADJUSTMENTS PROCEDURE".
Fig.1
Fig.2
NAME OF REMOTE CONTROL KEYS
MENU
MENU
MENU
DISPLAY / BACK
PICTURE MODE
MENU
MENU OK
1. IF
3. AUDIO
5. VSM W/B
7. PLUG & PLAY (ON)
2. V/C
4. DEF
6. S TATUS
SERVICE MENU
1-7 : SELECT DISPLAY : EXIT
SERVICE MENU
******* **** ***** *****
**** **** *** ***
SYSTEM CONSTANT-1
 : SEL  : OPE
COMB
TILT
THAI
NO
NO
TEXT NO
SUPER BASS NO
LANGUAGE ET
SYSTEM CONSTANT SET 1
SYSTEM
DISP : EXIT
SYSTEM CONSTANT-2
 : SEL  : OPE
BLUE BACK MUTE
MONO
NO
ECO SENSOR NO
COLOUR AUTO NO
BILINGUAL YES
SYSTEM CONSTANT SET 2
SOUND
DISP : EXIT
SYSTEM CONSTANT-3

: SEL  : OPE
NO
SYSTEM CONSTANT SET 3
SURROUND
NOPICTURE BOOSTER
NOCOMPONENT
NOPIP
NOS INPUT
DISP : EXIT
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(No.YA340)1-9
3.2.3 FACTORY SETTING VALUE
SETTING OF SYSTEM CONSTANT SET
Table 1
SYSTEM
COMB
TILT
SUPER BASS
TEXT
SOUND
BILINGUAL
BLUE BACK MUTE
COLOUR AUTO
ECO SENSOR
SURROUND
PICTURE BOOSTER
COMPONENT
PIP
S INPUT
THAI
NO
NO
NO
MONO
YES
NO
NO
NO
NO
NO
NO
NO
Setting item Setting content Setting value
YES NO
YES NO
YES NO
YES NO
YES NO
YES NO
YES NO
STEREO PB MONO
YES NO
YES NO
YES NO
YES NO
YES NO
SINGLE NO PAT
MULTI TRIPLE PAL THAI
NO
LANGUAGE E/T
NO
E/T
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1-10 (No.YA340)
SETTING OF BASIC FUNCTIONS
Table 2
SETTING OF MENU SCREEN
Table 3
SERVICE MENU SETTING ITEMS
Table 4
Setting item Setting value
POWER Off
SUB POWER On
VOLUME 15
COLOR SYSTEM PAL
SOUND SYSTEM B/G
PICTURE MODE (VSM) BRIGHT
OFF TIMER OFF
CHANNEL POSITION PR1
Setting item Setting value
INPUT TV
VNR AUTO
AUTO SHUTOFF OFF
CHILD LOCK OFF
BLUE BACK ON
AUTO PROGRAM
Refer to OPERATING INSTRUCTIONS
EDIT / MANUAL Refer to OPERATING INSTRUCTIONS
LANGUAGE THAI
TINT Centre
COLOUR Centre
BRIGHT Centre
CONT Maximum
SHARP Centre
WHITE BALANCE COOL
AI VOLUME ON
FAVORITE CH RED PR01
FAVORITE CH GREEN PR02
FAVORITE CH YELLOW PR03
FAVORITE CH BLUE PR04
Setting item Setting value
1. IF 1. VCO
2. DELAY POINT
2. V/C 1. SCREEN DATA
2. CUTOFF(B/G)
3. WDR(R/G/B)
4. BRIGHT(TV/VDO 1/2)
5. CONT(TV/VDO 1/2)
6. COLOUR(TV/VDO1/2)
7. TINT(TV/VDO 1/2)
8. SHARP [Do not adjust]
9. Y DELAY [Do not adjust]
10. TINT DVD [Do not adjust]
11. AMP T. SHARP
3. AUDIO
[Do not adjust]
1. DCXO ADJ
2. NICAM lower ERRLIM
3. NICAM upper ERRLIM
4. A2 ID THR
5. MENU EQUALIZER
4. DEF 1. V-SHIFT
2. V-SLOPE
3. V-SIZE
4. H-CENT
5. H-SIZE
6. TRAPEZ
7. EW-PIN
8. COR-UP
9. COR-LO
10. ANGLE
11. BOW
12. V-S.CR
13. V-LIN
14. V-ZOOM
15. V-SCROLL
5. VSM W/B
(BRIGHT/STANDARD/SOFT)
(COOL/WARM/NORMAL)
1. BRIGHT
2. CONT
3. COLOUR
4. SHARP
5. HUE
1. R DRIVE
2. G DRIVE
3. B DRIVE
6. STATUS
[Display only]
7. PLUG & PLAY(ON)
[Display only]
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2-4(No.YA340)(No.YA340)2-3
J801
VIDEO-1
INPUT
TU001
TUNER
V1
L1
IF
SCL
SDA
J802
OUTPUT L_OUT
V_OUT
SF102
SAW FILTER
IC601
AUDIO AMP
MAIN PWB
5
3
VOL+
REMOCON
RECEIVER
VOL- CH+ CH- MENU
POWER
LED
AC IN
F901
POWER SW
S901
J806,J807
VIDEO-2
INPUT
(FRONT)
V3
L3
VIDEO-1
AUDIO-1
AUDIO_OUT
VIDEO_OUT
VIDEO-2
AUDIO-2
T522
FBT
B1
SCREEN
FOCUS
EHV
D901
RECT
T921
SW
TRANSF.
L951
8V
12V
5V
3.3V_STB
32V
IC921
POWER
REG
IC973
12V REG
IC975
5V REG
IC972
3.3V REG
IC976
1.8V REG
IC974
1.8V REG
15
IC401
V. OUT
Q522
H. OUT
SPEAKER(L)
SPEAKER(R)
J809
HEADPHONE
MAIN PWB
(CRT SOCKET)
R
G
BV01
IC351
RGB OUT
V
H
DY01
DEF YOKE
1.8V
V1.8V
IC702
MAIN MEMORY
VIF IN
SIF DETECT
VIDEO
IDENT.
AUDIO
CONTROL
COMB FILTER
Y DELAY ADJ.
COLOUR
DEMOD
SYNC
SEP.
H. DRIVE
VIF DETECT/AGC/AFT
SOUND TRAP
DIGITAL SIGNAL PROCESS
PEAKING SCAN
VELOCITY MOD.
U/V DELAY
RGB MATRIX
&
GAMMA
AUDIO
SELECT
VIDEO
SELECT
I/O
PORT
AUDIO
SELECT
V1
V3
L1
L3
VOUT
LOUT
24, 25
58
51
49
34
48
36
ROUT 85
GOUT
BOUT
86
87
VDRA+,VDRB-
HOUT
22, 23
67
A_L 62
R
R
G
G
B
B
I2C
BUS
KEY_IN
REMOTE
PW_LED
SCL0, SDA0
SCL1, SDA1
98,99
97
119
127,128
108,109
V. DRIVE
MICRO
COMPUTER
BASE-BAND
DELAY LINE
Y
C
B-Y R-Y
SKIN TONE
U/V TINT
SATURATION
OSD
SELECT
IC701 MAIN MICRO COMPUTER
IF.VIDEO.RGB.SYNC.DEF. PROCESS
BLOCK DIAGRAM
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(No.YA340)2-5 2-6(No.YA340)
!
CS21201
C764
C766
C778
R101
L710
L711
L709
C765
C101
C753
C752
C751
R782
R729
D101
C780
C750
C749
C748
L101
C746
C109
R107
Y004
L716
D601
C721
IC601
SF101L002
NECK
C615
R002
C107
SF102
R001
C004
IC801
C003
R766
R767
C001
C106
VER_PROTECT
R345
R778
C670
Y003
R670
C317
LC801
J801Y802
J802
Y801
R801
Y009
K701
C779
C809 D813
Y981
C760
D603
Q760
R318
Q307
R320
R321
C316
Y713
C315
C313
R783
R779
C312
D706
C311
C310
C309
L303
R728
R726
R727
CN00T
C705
C757
C756
C718
C747
L706
C754
C755
R732
R733
R734 R735
L708
C758
C759
L707
X701
C709
C712
V_SHIFT
Q609
C761
C717
IC701
R005
C706
R731 D708
R701C710
C711
C762
R708
C763
R709
D701
R759
C713
R781
C714
C707
C708
R705
R703
R704
C716
C715
R706
R707
C719
C720
R780
TU001
CF101
C789
Q703
Y604
GND
C656
GND
K107
R604
R974
Y505
R606
R341
R344
R343
D341
STB1
R602
R603
R611
C985
C111
C986
IC976
R978
Q605
Y712
Q602
R610
C609
Q601
R609
R608
C607
C608
R623 R620
Q608
Q607
R621
C613
R624
R622
R616
D342
R810
GND
C802
GND
Y715
D805 R811
Q001
Q803
Q002
Q805
R814
R807
Q801
R808
R809
R802
D001
D343
D344
L301
D345
CF702
R342 C341
Q341 Y303
C314
R319
Y006
Y005
R006
Y716
C302
C303
R309
R312
C305
C785
C304
3.3V_STB
R324
8V
5V
R325
R326
R327
GND
R823
D807
C806
C807
Y603
R790
LC701
Y702 Y703
R328
R322
R323
CN00C
D303
K102
K105
32V
L717
C308
C307
C306
R308
C110
R307
W-A
R310
Q305
Q306
X301
L302
IC301
J808 J807
Y302
L702
L701
L703
C702
C701
Y791
Q791
K301
12V
C777
R760
R761
CP650
Y705
Y706
J806
Q701
GND
Y008
BL_GND
K104
W-A1
Y708
Q704
R737
R738
Q705
Q308
IC302
Y709
Q706
GNDGND
R756
D602
R626 C601
C742
R627
R625
Y701
R769
D801
W-B1
R793
R795 Q707
Q708
R796 D707
A_VCC
A_GND
Y973
R794
C804
R815
C792
Y301
Y711
Y102
VDRA+
VDRB-
Y101
H_DRIVE
P_ON/OFF
HFB
ABL
PROTECT
K106
GNDGND
Y822
R822
Y824
Y103
Y104
Y105
D753
D751
Y718
Y720
D713
D808
R824
D809
R671
Q761
R672
R673
R629
Q762
R628
Y810Y809
C805
Y811
J809
R630
R674
R675
R632
C671
Y760
D815 D814
R792
R821 R820 R819 R818
C793
S801S802S803S804S805
D816
R975
C788
C787
C790 R786
K801
Y106
Y107
C662
R817
R724
R825
R725
R722
IC974
C965
C722
C983
CN00S
R753
Q101
L001
R105
R106
R104
R004
R108
C102
R102
R103
Q102
Q103
R798
C108
C103 C104
R110
C105
C740
C737
C006
C736
R755
R003
R109
C002
K103
R715
C723
R797
C728
L705
Y710
R710
C739
C738
C726
C729
C732
R741
R742 R744
R746
R747
R749
R751
R754
R771
R757
C703
C704
R736
C767 L712
C775
L715
C005
L704
C731
C734
C730
C733
L713
C769 C768
R745 R743
R758
L714
C773
C774
D714
C771
C772
D709
C776
R750
C770
C602
R785
C603C604
D604
R614
C784
C610
R007
R008
Y007
R711
C781
C782
R762
R763 R764 R765
R712
C735
R752
D703
D702
D704
L003
C982
K101
R311
R314
R313
R315
R316 R317
R772
R777
IC702
R748
R784
R739
C743
W-B
CF701
D711 D712
C744 C745
R740
R776
C783
C791
R768
Y707
R773
C741
LC805
C727
Q702
R723
.1
.22
47/16
10
*4
*4
*4
100/16
.0047
.1
.1
.1
1.2K
X
X
.1
.1
.1
.1
.1
0
X
X
*4
*3
47/16
X
220
X
220
470/16
.1
0
1K
.01
18p
0
X
1
X
27K
X
X
BW
BW
75
X
10/50
X*8
X
.22
*3
*2
X
X
XX
X
X
X
X
10K
10K
X
X
X
X
X
100
27K
560
7p
560p
.1
10/50
*4
.1
10/50
1k
100
100 100
*4
.22
100/16
*4
.01
.22
*5
.1
.047
75
7p
3.3K *3
12k6800p
2.2/50
100/16
10k
.22
1M
*3
3.3K
10/50
4.7K
.022
.1
100/16
39k
100
100
.001
.001
220
22k
.01
.001
100K
X
47/50
*2
X
100/50
10K
1K
X
X
0
0
0
*3
12K
0
10K
10/50
470/16
.1
3.3K
X
*2
100K
33/16
*2
27K
X
100/16
BW
33K 10K
*1
*1
2.2K
10/50
68K
10K
X
*3
390
10/50
*8 82K
X
X
*2
100K
100
X
220
0
X
*3
X
X
*3
X
220/16
*2
X
X
0
0
X
X
X
X
X
X
X
X
X
X
X
X
X
47
X
100/16
.1
BW
1K
X
XX
X
1.2K
0
X
*4
X
X
X
X
.1
X
X
X
X
X
X
X
X
X
*4
*4
X
.22
.22
X
X
.1
100
100
BW
X
X
*2
0
0
*1
3.3K
10K
X
X
BW
10K
4.7K 3.3/50
10/50
56K
220
X
X
100
100K *1
*2
0*3
BW
2.2K
470/16
75
.1
X
X
1K
X
X
X
X
X
X
470
X
12K
*1
15K
8.2K
0
*2
X
0
0
X
BW
270
1K
10K
270
X
X
*8
X
470 330 220 180
X
*8
X
X
10/50
X
100
X
X
X
75
X
X
X
X
.1
.001
10/16
1.2K
X
22
100
180
27K
X
.0047
6.8K
2.7K
X
X
10K
X
.0047 10/50
X
X
.1
.1
33/16
.01
1.2K
3.9K
X
10/50
390
1
1K
.1
*4
X
470
.1
.1
10/50
2.2/50
2.2/50
220100
100
10k
100
1K
1K
220
1K
4.7k
X
X
100
.22
*4
.22
*4
.0022
*4
.1
.1
10/50
10/50
*4
.1 .22
3.3k 3.3k
3.3k
0
2.2/50
.1
22/50
.22
*3
.1
X
.1
10/50
10K
X
X
X
100K
X
10/50
X
X
X
2.2K
1/16
.1
220
220 220 220
4.7K
.1
100
X
*8
*8
4.7/50
X
X
X
0 0
0
2.2K
100
2.7K
10K
X
X
*3 *3
.001
.1
1.2K
100
X
X
0
0
4.7K
.1
X
.0033
X
X
SDA1
SCL1
5V
P_ON/OFF
VDRA+
VDRB-
5V
SCL0
PROTECT
1.8V
SDA0
L_OUT
PW
NECK
5V
V_OUT
CONT
3.58/OTHER
CONT
OFF_MUTE
L1
CVBS1
CVBS1_GND
PROT
CVBSO/PIP_GND
5V
5V
SDA1
CVBSO/PIP
VER_PROTECT
CVBS1_GND
STB1
5V
12V
STB1
V1.8A
A_VCC
NECK
SDA1
SCL1
SCL1
P_ON/OFF
4.5/OTHER
8V
A_GND
12V
STB1
V_SHIFT
VDRB-
VDRA+
1.8V
NECK
SCL0
SDA0
5V
H_DRIVE
ABL
HFB
L_AOUT
L_OUT
A_L
A_L
A_MUTE
PW_LED
REMOTE
8V
REMOTE
TIMER
Y_GND
A_MUTE
3.58/OTHER
SDA1 SCL1
V3
PW
H_DRIVE
HFB
12V
PROTECT
STB_IN
CVBS1 V_OUT
L3
P_ON/OFF
ECO_IN
ABL
V_SHIFT
ECO_IN
PROT
A_VCC
CVBSO/PIP
CVBSO/PIP_GND
OFF_MUTE
PW_LED KEYIN
VER_PROTECT
5V
1.8V
ABL
5V
V1.8A
1.8V 1.8V
L1
4.5/OTHER
5V
L3
KEYIN
5V
8V
8V
GND
5V
A_GND
L_AOUT
TIMER Y_GND V3
SVM
MAIN PWB ASS'Y (1/3)
SCW-1171A-H2
NOTE) 1.Refer to the part list for the part number of IC701 and IC702.
2.Refer to page 2-11 for voltages of this circuit diagram.
3.Refer to page 2-12 for waveforms of this circuit diagram.
MAIN MICRO COMPUTER
IF VIDEO RGB SYNC DEF. PROCESS
POWER LED
(RED)
SPEAKER
AUDIO AMP
MAIN PWB ASS'Y(3/3)
(CRT SOCKET)
CN10T
VIDEO-2
INPUT
VIDEO-1
INPUT
OUTPUT
CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM (1/3)
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2-8(No.YA340)(No.YA340)2-7
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CS21201
L951
R903
IC921
R474
C915
R902
R473
L551
Q592
C953
C426
D423
D971
C952
IC972
C581
C428
C979
IC975
R582
C924
C423
R402
R554
C403
C555
R405
K922
Q521
K957
C402
C401
C978
D422
L975
C421
L530
C521
C951
C522
R425 R424
CN0HV
R433 C425
R422
R421
D551
C980
L421
C981 CN00U
L973
LF902
L972
C989
D973
C430
C926
C963
R591
R440
R439
C435
R448
C928
C436
R434
R427
C901
Q471
R583
CP953
K953
D974
R965
R581
LF901
Y965
IC973
R412
R555
R411
D977
C902
R529
T522
R923
IC401
R981
D523
R527
C961
R976
R972
CN00X
R962
D962
C359
CN10U
C922
D927
D593
C593
R594
R921
R924
R595
D928
Q591
D922
R934
R596
C350
D554
Y972
R970
C931
D571
R932
R791
R901
R597
C903
C905
D791
C529
Y977
D594
R977
C573
C949
Y950
T921
Y913
D582
C572
R576
C984
Y581
Y582
C975 C977
C976
Y502
C910
D592
C591
VA901
S901
F901
CNDEG
Q571
R584
L525
R904
Y910
Y909
R991
R585
D583
R426
SG351 SG353
SG352
SG354
IC351
C358
SK351
SK351
D935 D934
R358
R360
R359
C993
D530
R573
T521
R471
D921
C471
D471
R428
C925
R430
C592
R593
D581
D591
L954
R592
C420
R429
Q402
C352
CN10T
R369 R370
K955
D955
R371
R372
R373
R377
R375
R431
D372
Q374
R376
Q522
C955
CP955
C960
C371
D371
C962
K355
D472
Y570
Y571
GND GND
Y914
R522
Q982
R528
C940
D520
Q981
R984
R982
C580
R986
Y915
R980
D933
D932
Y501
R571
Q572
R985
R983
C909
C988
C987
D981
R475
Y916
Y917
D420
GNDGND
TH901
Y971
R575
R530
C520
C964
R524
C523
R930
C904
K954
Y401
C906
C992
D421
R435
C956
D953
D926
R533
C958
D555
C582
R572
D901
C530
C556
R551
R574
C532
C571
C551
D975
D951
C527
R521
R520
C929
D952
CP952
C968
C957
C991
C967
K921
CN0PW
L522
R931
C427
NECK
C429
R523
R423
R432
Y908
Y905 Y906
R973
Y907
C526
HFB ABL
C524
R472
H_DRIVE
Y904 Y902
R922
R929
D929
Y901
STB1
CN0E1 CN0E2
BL_GND
L952
12V
Y903
D970
R355 R356 R357
R351
R354 R353
P_ON/OFF
R352
R381
R933
R380
R420
V_SHIFT
C351
C353
D370
L351
D354 D355 D356
Q373
Q372
Q371
Q401
C422
FR901
PROTECT
D351
Y912
Y975
Y974
Y911
3.3V_STB
TP-E
A_GND
TP-47B TP-47G TP-47R
A_VCC
D931
D980
Q980
R350
D350
8V 5V 32V
R569
L357
L356
L355
VER_PROTECT
VDRB- VDRA+ STB_IN
K952
R570
K951
220K
X
100K
X
X
*3
.1
100/35
100/25
27K
4.7/50
10K
1.8K
.1/50
3.3K
X
X
470/16
47/16
X
4.7/50
.0033
8200p
15K
15K
3.3 2200/25
X
X
*6
100/16
BW
100/16
.1
*3
.001
X
470X
1
220p
6.8K
X
X
33K
X
X
1.8K
3.9K
X
3.9K
*3
X
1.8
10K
X
390
X
.1
X
X
X
220
68K
X
X
5.6K
X
X
820
X
BW
X
X
47/25
1000/10
X
BW
100/10
10K
47/25
X
470/16 47/16
4700p
X
X
X
X
X
BW
X
X
8.2M
0
X
1K
XX
X
X
X
X
.001
*6
X
1M
4.7/50
X
X
22/50
56K
X
X
*6
XX
1/50
10K
*1
4.7/250
100K X
*6
33K
33K
33K
12K
X
1K
*3
5.6K
2200/35
220/16
*3
.1
*3
56
*1
470
*3
*1
15k
1k
X
10k
4.7K
X
*1
18k
0
X
22/50
22/50
X
BW
3.9K
.1
100/35
47/35
.001
X
*3
1K
330/35
X
X
X
22K
10/250
*3
1K
100
47/16
1000/16
47/16
150K
1000/35
.001/50
12K
3.9
X X X
10K
X
X
82K
X X
X
X X
100
150
150
150
X
1M
X
10K
1000p
X
*6 *6 *6
X
X
X
X
x
BW
BW
BW
8V
A_VCC
5V
VDRB-
NECK
VDRB-
H_DRIVE
VDRA+
HFB
P_ON/OFF
32V
12V
STB
VDRA+
ABL
PROTECT
3.3V_STB
32V
STB1
HFB
12V
8V
STB1
STB
ABL
12V
5V
V_SHIFT
V_SHIFT
PROTECT
HFB
3.3V_STB
NECK
H_DRIVE
VER_PROTECT
3.3V_STB
VER_PROTECT
P_ON/OFF
PROTECT
PROTECT
PROTECT
MAIN PWB ASS'Y (2/3)
SCW-1171A-H2
MAIN PWB ASS'Y(3/3)
(CRT SOCKET)
SCW-1171A-H2
NOTE) 1.Refer to page 2-11 for voltages of this circuit diagram.
2.Refer to page 2-12 for waveforms of this circuit diagram.
AC110V-AC240V
50Hz/60Hz
DEG COIL
V.OUT
DEF YOKE
ADJUSTMENT
CONNECTOR
MAIN PWB ASS'Y(1/3) CN00T
MAIN PWB CIRCUIT DIAGRAM (2/3), (3/3)
All manuals and user guides at all-guides.com

2-12(No.YA340)
WAVEFORMS
-MAIN PWB-
-CRT SOCKET PWB-
IC401-1
0.5Vp-p
[V]
IC401-3
28Vp-p
[V]
IC401-5
54Vp-p
[V]
IC401-6
30Vp-p
[V]
IC701-10
2.8Vp-p
IC701-11
3.4Vp-p
IC701-22
2.0Vp-p
IC701-23
2.8Vp-p
[V][V]
IC701-67
3.6Vp-p
[H]
IC701-74
1.3Vp-p
[H]
IC701-66
5.4Vp-p
[H]
[H]
IC701-87
2.4Vp-p
[H]
IC701-48
2.0Vp-p
[H]
T522-2
240Vp-p
T522-3
32Vp-p
[H] [H]
240Vp-p
[H]
T522-5 T522-7
55Vp-p
[H]
T522-9
3.0Vp-p
[H]
Q522-C
960Vp-p
[H]
Q521-B
2.0Vp-p
Q521-C
34Vp-p
[H]
Q522-B
100Vp-p
[H][H]
IC351-7
100Vp-p
IC351-8
130Vp-p
IC351-9
150Vp-p
[H]
IC701-85
2.2Vp-p
IC701-86
1.8Vp-p
[H] [H]
[0.2us/div] [0.2us/div]
[H]
All manuals and user guides at all-guides.com