Sony KV-21SE43C, KV-20S90 service manual Block Diagram and Schematics, DY Assy

5-3. BLOCK DIAGRAM AND SCHEMATICS

BLOCK DIAGRAM

KV-20S90 / 21SE43C

ANTENNA

BLOCK

REAR A/V

(INPUT)

FRONT A/V

(INPUT)

TU101

ROUT L OUT

VCC 5V

VCC 9V

VCC 30V

MUTE

VIDEO OUT

AFT OUT

DAT

CLOCK

RF AGC

J201

3PV

VIDEO

L

AUDIO

R

J202

3PV

VIDEO

L

AUDIO

R

AUDIO SWITCH

1 7

IC201

2 S1

3 V1-L

4 S2

+5V 5 V2-L

+9V

+30V

AGC

Q252

TO V1-L

TO V1-R

TO V2-L

	7	34	37	39
TO V2-R	O-AGC	I-AFT	IO-SDAT IO-SCLKN
	TO S1 10 O-VO			O-MUTE 5

AUDIO SWITCH

17

IC202

2S1

3V1-R

4S2

5V2-R

VIDEO

BUFFER

Q205

SW

		B OUT
43	TV/C2	G OUT
4	CVBS1/Y1	R OUT

34SCL

Y.CHROMA.JUNGLE

35 SDA IC301

IK IN

41CVBS2/Y2

VD-

VD+

24

23

22

21

14

13

3	13
5	11
AUDIO OUT

IC401

10

1

7

8

BUFFER

Q394

BUFFER

Q393

BUFFER

Q392

+B	BUFFER
	Q303

IK-BUFFER

Q301,302

1DRIVER-

V.OUTOUT

IC541 5

7DRIVER+

V DRIVE

CN402

1

2

CN401 1

2

CN301

B 4

G

3

R 2

IK 1

V OUT CN501

TP5086

V MID

TP5075

SP902

SPEAKER

(L)

J400

HEADPHONE

SP901

SPEAKER

(R)

CN1752

4 B

3 G

2 R

1 IK

V	DY(+)
V	DY(-)

CRT AMP

IC1751

B IN B OUT KB

19

2 G IN	G OUT	KG
		8
R IN	R OUT	KR
3		7
	IK	5
VIP
REFERENCE
		CN1754
{	RGB DRIVE	1
		}
	CRT DRIVE

DY ASSY

20NX

PICTURE TUBE

H G2 FV HV

11	O-V1
TO S2	O-VOL	3
	I-HSYNC	16

PWM-DC/VOLUMEQ203

H.SYNC.BUFFER

SEP.Q390

Q001

REF

3

BOOST

6

+B

D502

H OUT

4

3

2

H DY(-)

NVM 1K BIT	B-DAT	5		I-PROT	17
MEMORY	B-CLK	6
IC003				I-CVIN	22
CN203
B CLK		38 O-BCLKN
B DAT		36 IO-BDAT		O-R	52
B INT		31 I-BINTN		O-G	51
	S005			O-B	50
				O-OSDBLK	49
VOLUME-	S004	33 I-KEY	CLOSED CAPTION
				I-VPN	2
			CONTROL
VOLUME+	S003		TUNING SYSTEM
			IC001
CHANNEL-	S002
CHANNEL+

BUFFER

Q305,391

6MONOUT

		ABL IN
32	R2IN	AFCFIL

31G2IN

30B2IN

29YS2/YM

HD

5VTIM

HP/PROTECT

3

20

19

18

BUFFER

Q556

HDRIVE Q501

+13V

V.BOOST D502

T501

H OUT	H DRIVE
Q502
SWITCH
D581

TP506

1

TP504
	+180V
+180V	RECT
	D552

H DY(+)

1

4

T504 FBT

HV

HV

		S006		I-HP	1
	TV/VIDEO
		S007
	DEMO			I-RESET	30
		S001			19
	POWER		14I-POWERN	I-AVCC
				O-ADJ
					4
STBY	2	DETECTOR	12I-RMCN	I-DSC	24
+5V		1
		IC004
				O-DSC	25
			18 O-LED	O-RELAY
			O-DGC
			13	6

STAND-BY/TIMER

D002

CF001

8MHZQ607

Q608

T604

12

310

411

59

68

D636

7.5V RECT

HP	HP/PROT
Q002,003	Q300

H COMP

Q602

SET 7.5V

	OCP
	Q571
	H-PROT
	TP503
	V.CONTROL HOLD
SWITCH	IC521
D507	5
	7
	6
	HOLD DOWN
	REF.
	D573
	+B

TP501
	-13V
-13V	RECT
H-PROTECT	D561
D574
TP502
	+13V
+13V	RECT
	D562

2

115V

7

8

9

FV

G2

ABL

11

6 HEATER

6

CN502

5

FV

G2

AC IN

DGC

DGC

CN601	T601
F601
2
1
CN602
2
1	DGC RELAY
+12V	Q601
	RY601
+9V	5V REG
	+5V
	Q650

			PIT	T603
AC RECT	D601			2	14
				4	15
	R660			3	13
				5	11
+7.5V	RY602			7	12
RELAY DRIVER
Q606,670				8	10
					9
				4	1
		3	2
	4	IC601	1	3	2
				PH600
				PC123FY2

D615
+B RECT	+B

D616

AUDIO VCC

AUDIO VCC

D617	12V
12V RECT

POWER

CONTROL

IC602

3 1

	6
	STBY +5V		STANDBY
1	REG.	8	+5V
	IC002

9V-REG	SET +9V
Q605

TUNING CONTROL, Y/C/J

POWER SUPPLY,DEFLECTION,

TUNER/IF,AUDIO,MTS

BA4D-905-BD

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