Estudiante

KV-20S90 / 21SE43C

A BOARD SCHEMATIC DIAGRAM 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
CN203 4P :ZZZ

|

11

|

12

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13

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14

|

15

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16

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17

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18

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19

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20

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21

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22

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B CLK

B DAT

A
V
AFT OUT DET OUT VCC 30V SAP LED ENABLE VCC 9V RF AGC OUT IF OUT VCC 9V DET OUT2 ST LED VCC 5V F MONO CLOCK DATA

B INT

E

V AL

3

MODE

SMD

NC

NC

STEREO

MUTE

— B — C

V

R

L

V

L

R

J202 3P FRONT A/V

4

2

1

J201 3P REAR A/V

S OUT

R OUT

L OUT

OUT 2+

PGND 2

OUT 2-

OUT 1-

PGND 1
12

VI 1

VI 2

TP100

RF-AGC
C222 10 :CI C151 47 25V :CI

AUDIO

FSS BTF-WA412
R101 10k :ZZ-CP R204 75 :CHIP

R205 470k

C150 470 16V :CI L150

R150100 :ZZ-CP

C205 1

C206 1

R206 470k

1
R202 470k :CHIP R294 0 CHIP

NC

TU101

2

3

4

5

6

VC 2

5

S GND

1

10

15

20

25

VC1

VCC

IC401 TDA7057AQ/N2 AUDIO AMP

7

8

9

10

11

TP102 DET OUT

C101 4.7 :CI MAIN R252 470 :ZZ-CP
VIDEO

C204 10 25V

R291 4.7k Q252 2SD601A AGC

:CHIP

TP101

R151 100 :ZZ-CP

L151
VIDEO:CHIP

R293 10k
Q390 2SD601A-QRS-TX BUFFER

9V
Q205 2SB709A BUFFER :0B
R254 100 :ZZ-CP

R251 470 :ZZ-CP

D209 MTZJ-T-77-10B :40
C228 10 :CI

D203 MTZJ-T-77-10B :40

D204 MTZJ-T-77-10B ESD

D201 MTZJ-T-77-10B :40
C201 1 :CI

C202 1 R201 470k :ZZ-CP

AUDIO

AUDIO

OUT 1+
13
C221 470 25V :CI R239 220 :RD R240 1k :RD

D202 MTZJ-T-77-10B ESD
R230 10k :CHIP PS201 C2160.47 R234 3.3k :CHIP C214 0.22 R268 * :CHIP

TP400
AUDIO VCC

C220 470 25V R237 220

C203 0.001 B:CC-CP

R295 0 CHIP R289 0 CHIP C236 0.01 CHIP
GND L-OUT V+ V2-L

R288 0 CHIP

IC200 NJM2521M-TE1 R-SWITCH
TV-R S1 V1-R S2 GND R-OUT V+ V2-R

AUDIO

R238 1k C218 470 25V :CI

C160 100 16V :CI

—
30V

L160 :CHIP

1

8

4

5

R390 100 CHIP R391 1k R096 2.2k CHIPC232 1 :CI

IC201 NJM2521M-TE1 L-SWITCH :HT

R297 100
AUDIO

CN402 2P :ZZZ
1
JW203 (7.5MM)

1

8

AUDIO

SP L + SP L SP902
(L/MONO)

2

7

2

3

TV-L S1 V1-L S2

6

2

SET-5V

7

AUDIO

C219 0.1 :CQ R231 10k :CHIP
AUDIO

R298 100

3

6

AUDIO

4

5

D
SET-5V

AUDIO

C234 10

R235 3.3k :CHIP C215 0.22 :CI

R269 * :CHIP

C217 0.47 :CIHEADPHONE JACK :HJP-S

J400

D205 MTZJ-T-77-30D :40

9V

R242 22k

C233 V1

1

TV R

— E —

C226 4.7 160V :CI

R243 33k VO
VIDEO

R290 100 :ZZ-CP D208 MTZJ-T-77-10B :40

AUDIO

1

SP R + SP R CN401 2P
SP901 (R)

V2 TV TV 12V

SET 9V R253 15k 2W :RS C653 47 25V :CI R086 10k :ZZ-CP

12V

R256 4.7k :RD

R257 10k :ZZ-CP

Q203 2SB709A MUTE :0B

2

9VC243 0.0047

VOL 5V

2SD1292-T103 5V REG
C651 100 16V :CI

9V Q650

R085 10k :ZZ-CP

AUDIO VCC

VOL 5V R329 100

HP

VP

HP 9V

HP

Q301 2SB709A IK BUFFER :0B
R356 2.2k :ZZ-CP R347 680 :ZZ-CP C390 0.1 :CQ C330 680p B:CC-CP

Q302 2SB709A IK BUFFER :0B
R322 10k :ZZ-CP

R650 680 :RD

R321 6.8k :ZZ-CP

+B

+5V

Q001 2SB709A-QRS-TX H SYNCH SEP C006 0.047 R077 100kCHIP

F
D650 MTZJ-T-77-5.6C :40

R400 22k D403 1SS133 C418 10 :4A R433 12k L302 :CHIP R432 12k D434 1SS133 C312 1000 25V C311 0.01 B:CC-CP C376 47 25V :CI

C320 0.47 R319 10k :ZZ-CP

D302 MTZJ-T-77-5.1C :40

C007 220p CH

R076 1M

— G

TP602 SET-5V

R075 10k CHIP R092 1k CHIP R078 1k CHIP Q002 2SD601A HP R008 220 :ZZ-CP R099 4.7k :RD C001 220p CH:CC-CP

IC001 M37273MF-255SPR055 220

R030 10k :RD

C077 100p CH:CC-CP

C321 470pF

9V

CONTROL TUNING SYSTEM I-HP I-VPN O-VOL O-ADJ O-MUTE O-RELAY 0-AGCMUTE 0-SPSW O-CHBLK1 O-V0 O-V1 I-RMCN O-DGC I-POWERN O-VMLV I-HSYNC I-PROT O-LED I-AVCC I-HLF I-VHOLD I-CVIN I-CNVSS I-DSC O-OSC Vss 2 O-R O-G O-B O-OSDBLK NC 0-ANTSW 0-BBE/MB I-SSW 0-MONO I-STEREN O-SAP O-YM 0-HSYNCSW IO-SCLKN IO-BCLKN 1 IO-SDAT IO-BDAT 0-MARKER...