— 23 —
KV-20S90 / 21SE43C

1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |

A
—
B
—
C
—
D
—
E
—
F
—
G
—
H
—
I
—

J

—

K

—

L

—

M

—

N

—

O

—

P

—

A BOARD SCHEMATIC DIAGRAM

1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
252627282930313233343536373839404142434445464748
1
2
3
4
5
6
1
2
1 2 3 4 5 6 7
123
1
2
1
2
3
1
2
1
2
123456789
1011121314151617181920212223242526
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
1
2
3
4
1
3
2
4
6
1
2
3
4
5678
1 2 3 4 5 6 7 8 9
10 11 12 13
1
2
3
4
5
6
1
23
4
1
2
3
4
5
12345
1
2
3
4
5678
1
2
3
4
5678
1 2 3 4
5678
1
3
4
5
6 8
9
2
10
11
S
2
3
4
5
7
8
9
10
11
12
14
15
13
1
2
4
3
V
L
R
1
2
3
4
5678
V
L
R
C692
CN203
C046
C038
C691
R253
C576
C562
C564
CN402
C531
L591
C004
C629
C218
C221
C306
D541
D552
D561
D562
D574
L504
T601
C150
C200
R544
R546
C509
C151
C376
C653
C375
D201
D611
FB501
D650
D205
C552
C553
D302
CN501
R553
X301
C502
C508
R254
R392
R393
C017
C019
C020
C028
C034
C047
C060
C062
C091C092
C101
C201
C217
C219
C222
C228
C232
C301
C308
C310
C311
C319
R002
R009
R013
R016
R017
R018
R020R021 R022 R023
R030
R031
R038
R043
R046
R048 R049
R085
R087 R088
R089
R101
R150
R151 R201
R239
R240
R251
R255
R257
R290
R306
R312
R313
R315
R316
R319
R324
R549
R650
R383 R384 R385
R321 R322
C651
C160
R065
R066
D571
D581
R641
C050
C039
R252
C303
C574
C215
R008
R054
C316
C317
C318
R256
R025
R026
R040
R280
R311
R329
R580
C077
R586
L001
L150
L151
L160
L302
L301
CN601
R620
D601
R659
FB602
D615
D613
D614
D602
PH600
C632
R623
D632
D631
R616
D634 D635
D637
T604
D636
C654
D653
FB611
D616
C657
FB605
FB606
D617
L200
FB609
C620
R675
R028
D633
T501
C236
R295
R289
C561
C646
D320
RY602
D670
D434
R293
D638
D603
C243
D502
L503
X001
R050
R390
C006
R077
R075
C005 R074
R096
C055
R097
R078
R092
R001
R005
R093
R394

CN502

R660
CN602
R679
R073
L002
C013
C014
D003
C037
C048
C074
C203
C205
C204
C216
C220
C226
C234
C305
C309
C312
C314
C320
C321
C374
C418
C504
C505
C507
C511
C541
C571
C591
C601
C602 C603
C618
C628
C631
C634
C641
C645
D001
D002
D209
D210
D301
D310
D311
D403
D501
CN401
L003
PS201
R003
R007
R027
R044
R032
R033
R058
R057
R072
R086
R090
R099
R204
R205
R237
R238
R242
R243
R284
R301
R304
R307
R308
R309
R314
R317
R323
R325
R331
R508
R533
R534
R561
R562
R571
R577
R578
R582
R585
R636
R638
R655
R661
R663
R672
R688
RY601
S001
S007S006S002S005 S004 S003
T504
JW203
JW510 JW511
JW690
JW691
R060
R504
R235
R231
C027
D004
R004
R045
R047
R091
C373
R330
FB604
R591
R400
R432
R433
R502
R056
D038
C604 C605
C613
C617
C616
D609
R658
C638
F601
R268
R269
R651
R652
R664
R698
T603
THP601
VDR601
C233
R206
C206
D204
D203
J202
C202
R202
D202
IC200
J201
R294
R288
R234
C214
R230
R297
C611
R683
R643
R682
R671
R670
R617
R612 R614 R611
R610
R603
R602
R552
R574 R575 R572
R573
R565
R567
R576
R566
R568
R583
R584
R532
R579
R541
R542
R548
R543
R547
R649
R633
R632
R637
R639
R662
R634
R648
R647
R657
R656
C621
R501 R535
R626
R625
R630
R631
R391
R298
R347
C330
C390
R356
R076
C007
C078
C001
R055
R310
R318
C313
R560
R559
C556
R635
R640
C630
C626
C633
C690
C693
C543
C542
C650
C656
C614
C573
C577 C575
C623
C622
CN301
IC001
IC301
J400
D208
R019
C011 R010
R070
R051
R011
C072 R241
R291
R353
Q252
Q205
Q390
Q203
Q302
Q301
Q650
Q001
Q002
Q394
Q393
Q392
Q300
Q003
Q391
Q305
Q303
Q670
Q556
Q607
Q502
Q606
Q501
Q608
Q571
Q602
Q605
Q601
R644
IC401
IC201
IC002
IC004
IC601
IC521
IC602
D572
D573
R071
C643
C644
R061
IC003
IC541
C065
C563
C647
C648
R608
R609
R674
FB600 FB601
15k
2W
:RS
47
25V
:CI
470
25V
:CI
47
25V
:CI
470
16V
:CI
47
25V
:CI
470
25V
:CI
470
25V
:CI
0.1
25V
B:CC-CP
0.1
25V
F:CC-CP
47
25V
:CI
0.015
200V
:CA
0.015
200V
:CA
330p
2kV
:CC
0.068
200V
:CA
220p
500V
B:CC
10
250V
:CI
470
25V
:CI
470
25V
:CI
33
160V
:CI
100
25V
:CI
47
25V
:CI
470
25V
:CI
47
25V
:CI
MTZJ-T-77-5.1C
:40
4.7
2W
:RS
470
2W
:RS
47
1/2W
:RD
1
:CI
560p CH:CC-CP
0.1
:CQ
470p B:CC-CP
0.022
B:CC-CP
220p
CH:CC-CP
470p B:CC-CP
0.0022 B:CC-CP
4.7
:CI
1
:CI
0.47
:CI
0.1
:CQ
10
:CI
10
:CI
1
:CI
18p
CH:CC-CP
10
:CI
1
:CI
0.01
B:CC-CP
4.7
:CI
10k
:RD
220 :RD
22k :RD
470 :RD
1k :RD
6.8k
:RD
680
:RD 820
:RD 2.2k
:RD
10k
:RD
1k
:RD
220
:RD
1k
:RD
10k
:RN-CP
220
:RD
220 :RD
4.7k
:RD
680
:RD
:SV
100
16V
:CI
100
16V
:CI
0.45UH
:E
:F
:F
:LFT
MTZJ-T-77-30D
:40
GP08DPKG23
:4A
RGP10GPKG23
:4G
RGP15GPKG23
:4G
RGP15GPKG23
:4G
100p
CH:CC-CP
470k
:ZZ-CP
680
:ZZ-CP
1k :ZZ-CP
220 :ZZ-CP
100 :ZZ-CP 47k :ZZ-CP
220
:ZZ-CP
220
:ZZ-CP
10k
:ZZ-CP
680
:ZZ-CP
680
:ZZ-CP
680
:ZZ-CP
10k
:ZZ-CP
100
:ZZ-CP
100
:ZZ-CP
470k
:ZZ-CP
470
:ZZ-CP
100
:ZZ-CP
100 :ZZ-CP
10k
:ZZ-CP
100
:ZZ-CP
220
:ZZ-CP
100
:ZZ-CP
10k
:ZZ-CP
6.8k
:ZZ-CP
10k
:ZZ-CP
2.2k
:ZZ-CP 2.2k
:ZZ-CP 2.2k
:ZZ-CP
100
:ZZ-CP
1k
:ZZ-CP
10k :ZZ-CP
4.7
3W
:RS
4.7
160V
:CI
10
:CI
15pF
CH:CC-CP
15pF
CH:CC-CP
10
25V
:CG
0.22
:CI
10
:CI
4P
:ZZZ
2P
:ZZZ
470
:ZZ-CP
220
:ZZ-CP
10k :ZZ-CP
0.01B:CC-CP
0.01B:CC-CP
0.01B:CC-CP
4.7k
:RD
5.6k :RD
5.6k :RD
470 :RD
75
:ZZ-CP
100
0
100p
CH:CC-CP
6.8k
CHIP
10k
330
JW(5mm)
470p
JW (5MM)
1k CHIP
0.01
CHIP
0
CHIP
0
CHIP
MTZJ-T-77-10B
:40
1SS133T-77
:4A
1SS133T-77
:4A
1SS133T
MTZJ-T-77-10B
:40
220p 500V B:CC
10k
1000
25V
10
450V
680p
500V
B
S3L20UF4
S2L20UF
ERC04-06S
ERC04-06S
ERA22-08TP3
1SS133T-77 1SS133T-77
MTZJ-T-77-6.2C
RU4AM-T3
1.1UH
1.1UH
1.1UH
0UH
1.1UH
PC123FY2
6.8
1/2W
D1N20R-TA
1SS133
MTZJ-T-77-5.6C
:40
1SS133T-77
:HDT
0.0047
CHIP
:CHIP
:CHIP
:CHIP
:CHIP
:CHIP
2P
UDZ-TE-17-5.1B
D3SB60F
2.2M
1/2W
1.8
10W
RGP10GPKG23
3.3mH
10k :RD
100
CHIP
0.047
100k
CHIP
10k
CHIP
110k
CHIP
2.2k
CHIP
100p CHIP
10k
1k
CHIP
1k
CHIP
10k
CHIP
220 CHIP
4.7k
100

6P

:S-MICRO

0.47
1/2W
470
3.3
:CHIP
EGP20DPKG23
:4G
6P
:ZZZ
2P
221W
220p CH
0.1 25V B:CC-CP
1SS133T-77 :4A
0.0022 B:CC-CP
0.001 B:CC-CP
100p CH:CC-CP
0.001
B:CC-CP
1
10
25V
0.47
470
25V
4.7
160V
:CI
10
0.1
25V
B:CC-CP
0.01
CHIP
1000
25V
0.001
CHIP
0.47
470pF
470
16V
:CI
10
470p
500V
B:CC
2000pF
1.2kV
3900pF
1.2kV
0.33
250V
220
:CI
22 :CI
0.01 100V
0.47 125V
4700pF
250V 4700pF
250V
680p
1.5kV
100
25V
2200
16V
100
160V
680p
500V
0.01
250V
MTZJ-T-77-5.1C
:40
LED UNIT
STAND-BY/TIMER
MTZJ-T-77-10B
:40
MTZJ-T-77-10B
MTZJ-T-77-8.2B
MA111-TX
MA111-TX
1SS133 :4A
ERC06-15S
2P
:CHIP 220 :ZZ-CP
100 :ZZ-CP
5.6k :RD
220 :ZZ-CP
220 :ZZ-CP
220 :RD
4.7k :ZZ-CP
4.7k :ZZ-CP
220
10k
:ZZ-CP
10k
:RD
4.7k :RD
75
:CHIP
470k
220
1k
22k
33k
0
0 :RT
10k :ZZ-CP
4.7k
:CHIP
220k
22k
220 :RD
2.2k
680
100k
100:ZZ-CP
150
1W
47k
22k
1
1W
1
1W
1 2W :RS
18k
56k
2W
68k
:CHIP
33k
4.7k
22k
0.22
2W
5.6k
3W
1
2W
5.6k
3W
5.6k
3W
POWER
PU-Z
DEMO
PU-Z
TV/V
:PU-Z
CH+:
PU-Z
VOL-
:PU-Z VOL+:
PU-Z CH-
:PU-Z
(7.5MM)
(12.5MM) (12.5MM)
(5.0MM)
(5.0MM)
JW
(5.0MM)
JW
(7.5MM)
3.3k
:CHIP
10k :CHIP
220p
CH:CC-CP
1SS133T-77
10k
4.7k
4.7k
10k
0.1 25V
100:ZZ-CP
1.1UH
10
2W
22k
12k
12k
4.7k
3W
4.7k :RD
MTZJ-T-77-5.6C
:40
1
470k
1
MTZJ-T-77-10B
ESD
MTZJ-T-77-10B
:40
3P
FRONT A/V
1
470k
:CHIP
MTZJ-T-77-10B
ESD
NJM2521M-TE1
R-SWITCH
3P
REAR A/V
0
CHIP
0
CHIP
3.3k
:CHIP
0.22
10k
:CHIP
100
0.001
2kV
2.2k
4.7k
4.7k
1k
2.2k
680
680 10k 47k
1k
470k
4.7
220k
:RD
1k 330k
:RD 2.2k
470k
:RD
22k
4.7k
100k
:RD
15k
1M
100k
:ZZ-CP
10k
:ZZ-CP 4.7k
:RN
620
:ZZ-CP
4.7k
:ZZ-CP
10k
:RD
4.7k
:RD
10k
:RD
2.2
:RD
470
:RD
33k
:RN
10k
10k
47k
0.47
1k
2.2k
33
1/2W3.3k
1.5k
470p
2.2k
:RD 100k
:RD
100k
:RN
2.2k
:RN
2.2k :RD
10k :RD
1k
100
680
:ZZ-CP
680p
B:CC-CP
0.1
:CQ
2.2k
:ZZ-CP
1M
220p
CH
470p
B
220p
CH:CC-CP
220
1k
:ZZ-CP
10k
0.01
B:CC-CP
68k
150k
0.0022
B
10k
47k
0.01
B
0.47
:CI
47
0.47
:CI 0.47
:CQ
0.22
:CQ
47
:CI
0.001
22
0.001
4.7
:CI
0.47
:CI
0.01
B:CC-CP
0.01
0.001
5P
:S-MICRO
M37273MF-255SP
CXA2133BS
Y.CHROMA.JUNGLE
HEADPHONE JACK
:HJP-S
MTZJ-T-77-10B
:40
4.7k
:RD
0.001
B:CHIP 220
4.7k
220 :CHIP
220 :CHIP
220p
CH:CC-CP
4.7k
4.7k
0
:CHIP
2SD601A
AGC
2SB709A
BUFFER
:0B
2SD601A-QRS-TX
BUFFER
2SB709A
MUTE
:0B
2SB709A
IK BUFFER
:0B
2SB709A
IK BUFFER
:0B
2SD1292-T103
5V REG
2SB709A-QRS-TX
H SYNCH SEP
2SD601A
HP
2SB709A
BUFFER
:0B
2SB709A
BUFFER
:0B
2SB709A
BUFFER
:0B
2SD601A-QRS-TX
HP PROTECT
:1B
2SD601A
HP
2SD601A
BUFFER
:1B
2SB709A
BUFFER
:0B
2SC3311A
BUFFER
2SD774-T-34
RELAY DRIVER
2SD601A-QRS-TX
BUFFER
2SK2845-LB102
CONVERTER 2SD2624
H OUT
2SD1292-T103
PROTECT
2SC3209LK-TP
H DRIVE
:1B
2SC3311A-QRSTA
SW
2SA1091O-TPE2
OCP
:0B
2SD601A
BUFFER
2SD2137-OP-TA
9V REG
:1D
2SC3311A
SW
:1B
1.2k
TDA7057AQ/N2
AUDIO AMP
NJM2521M-TE1
L-SWITCH
:HT
NJM78LR05BM-TE2
STBY 5V
SBX3081-71
SIRCS
NJM4558M-TE2
V HOLD OUT
:HA
ERROR AMP
:HD
1SS133T-77
TEMP CORR
:4A
MTZJ-T-77-8.2B
HOLD DOWN
:40
4.7k
0.0047 250V E
0.0047
250V
E
JW(5.0MM)
M24C08-MN6T(A)
MEMORY
AN5522 V OUT :HN
1000p B:CC-CP
0.0047 200V
470p
0.001
500V
B
22M
1/2W
2.2k
680
1.1UH 1.1UH
9V
SET-5V
SET 9V
HP VP
VOL 5V
9V
SDA
HP
VIDEOVIDEO
VO
V1
R
G
B
+B
AUDIO VCC
AUDIO VCC
VP
+B
9V
TV
V2
TV
AUDIO VCC
R
B
G
9V
HP
VOL 5V
+B
12V
12V
SYBY+5
TV R
MAIN
*
250V *
250V
*
*
*
*
** 125V
*
*
:CHIP
*
:CHIP
*
*
*
*
*
*
*
*
CONVERTER
H DY +
H DY -
V DY -
V DY +
H DY -
H DY +
OUT
SP L +
SP L -
FV
HV
V OUT
V MID
FBT
RF-AGC
SP901
(R)
1510 15
SP902

<TUNING CONTROL>

E
AC
AC
DGC
DGC
20V ONLY
I-HP
I-CVIN
I-CNVSS
I-DSC
O-OSC
Vss
O-R
O-G
O-B
O-OSDBLK
IO-BDAT
I-RESET
Vcc
B INT
B DAT
B CLK
(L/MONO)
G2
H.DY H.DY V.DY V.DY
200V
115V
115V
ABL
H
H
<FOR JIG>
FOCUS
HV
(20V ONLY)
G2 (20V ONLY)
Y/C/J
POWER SUPPLY
TUNER/IF
AUDIO
MTS
CONTROL
TUNING SYSTEM
IO-SDAT
I-VHOLD
TO AC
CONNECTOR TO
DGC
AO
A1
A2
VSS
VDD
B-CLK
B-DAT
O-V1
V
5
6
9
8
7
2
4
1
0
0
V
11
S1
S2
GND
L-OUT
V+
TV-L
V1-L
V2-L
SET+9V
H.DRIVE
DET OUT
180V
BLUE OUT
H OUT
DEFLECTION
DRIVE+
BOOST
DRIVE-
VCC+
VCC-
OUT1
IN-1
IN+1
-VCC
+VCC
OUT2
IN-2
IN+2
APED
EW
SCL
SDA
EYIN
ABLFIL
VC1
NC
VI 1
VCC
VI 2
S GND
VC 2
OUT 2+
PGND 2
OUT 2-
OUT 1-
PGND 1
OUT 1+
SP R +
SP R -
SCP
+B
AUDIO VCC
-13V
+13V
H.PROT
REF
E
HEATER
I-VPN
O-VOL
O-ADJ
O-MUTE
I-RMCN
I-HSYNC
I-PROT
I-POWERN
I-HLF
O-LED
I-AVCC
I-KEY
O-DGC
I-AFT
O-YM
O-SAP
O-V0
O-CHBLK1
I-BINTN
I-STEREN
0-MONO
IO-BCLKN
IO-SCLKN
NC
TP100
TP101
TP102
TP602
TP001
TP300
TP507
TP506
TP504
TP501
TP502
TP503
TP601
TP500
TP400
C1
ABLIN
CVBS1/Y1
VTIM
MONOUT
COMB C
YCLAMP
COMB Y
GND1
IREF
VD+
VD-
VM
REG
HP/PROTECT
HD
AFCFIL
IKIN
ROUT
GOUT
BOUT
XTAL1
XTAL2
XTAL3
APCFIL
VCC2
TV/C2
CVBS2/Y2
GND2
EB-YIN
ER-YIN
YUVSW
VCC1
R2IN
G2IN
B2IN
YS2/YM
R1IN
G1IN
B1IN
YS1
O-RELAY
0-SPSW
O-SRS1
0-SRS2
I-AFT2
I-SSW
0-BBE/MB
0-ANTSW
INPUT
N/C
CD
N/CGND
RESET
N/C
OUTPUT
E
B
G
R
1K
NC
200V
NC
0-AGCMUTE
O-VMLV
0-HSYNCSW
0-MARKER
A
TP508
DGC
DGC
AC
IN
TO C BOARD
CN1751
TO C BOARD
CN1752
BA4D-905-A
GND
R-OUT
V+
S1
S2
TV-R
V1-R
V2-R
CLOCK
DATA
ENABLE
IF OUT
VCC 9V
AFT OUT
NC
NC
RF AGC
OUT
DET OUT2
DET OUT
ST LED
SAP LED
MODE
F MONO
SMD
MUTE
R OUT
L OUT
VCC 30V
VCC 5V
S OUT
VCC 9V
STEREO
L
TU101
FSS BTF-WA412
20 25
9V
12V
12V
9V
9V
9V
9V
30V
+B
7.5V
VIDEO
AUDIO
AUDIO AUDIO
AUDIO
AUDIO AUDIO
AUDIO
VIDEO
VIDEO
VIDEO
AUDIO
B
G
R
R
G
B
RGB
B
G
R
VIDEO
VIDEO
VIDEO
12V
AUDIO VCC
STBY+5V
7.5V
+13V
+B
+B
+B
12V
+B
SET-5V
+B
STBY+5V
SET-5V
+5V
9V
9V
9V
+B
1
2
3
4
5
67
8
9
10 11 12
13
14
16
15
17 18 19
20
21
AUDIO VCC
STBY+5V
12V
9V
9V
WHEN REPLACING T504 BE SURE TO CHECK THE VOLTAGE VALUE
AT (TP503). REFER TO THE SAFETY ADJUSTMENT SECTION.
AUDIO
AUDIO
AUDIO
R582 SEE PAGES 14 AND 15