Sony KV-G21L3 service manual Block Diagrams

SECTION 6

KV-G21L3

KV-G21L3

RM-883

RM-883

DIAGRAMS

6-1. BLOCK DIAGRAMS

A

SYS CONTROLLER, TU, MEMORY

Q1207, 1208

J1201 (2/2)

C (RGB OUT)

IF, Y/C JUNGLE, H/V OUT

BUFFER

VIDEO

POWER SUPPLY

MONITOR

AUDIO/VIDEO INPUT

Q1204

OUT

Q712

Q706

Q1201, 1202,

BUFFER

L (MONO)

1203

J1202

R DRIVE

R AMP

VIDEO

VIDEO

BUFFER

IN 1

Q709

RV701

(FRONT)

L (MONO)

G2

IK LIMIT

J701

IC1210

IC1211 L-SW

Q711

Q705

10

VIDEO BUFFER

J1201 (1/2)

6

G DRIVE

G AMP

9

3

7

3 V1

VIDEO

VIDEO

5

J251

8

7

4 VCC 1

L OUT

5

EARPHONE

6

IN 1

Q708

H2

1000V

(REAR)

5

1

L (MONO)

TV

200V

IC203

IK LIMIT

2

H1

AUDIO OUT

4

Q710

Q704

8 VCC 2

CN251

B DRIVE

B AMP

Q210

1

SP L

Q707

2

Q1209

Q207

L SP MUTE

IK LIMIT

AUDIO

STBY-SW2

AMP

R

CN103

CN703

R

6

6

G

G

5

5

B

B

4

4

IK

IK

1

1

IC521

+9V

+9V

D601

S601 POWER

REG

AC-RECT

T605 LFT

1

T601 SRT

TU101

17

2

Q402

+16V

F601

IF

IF BUFFER

SWF401

16

3

2

AGC

TU

U/V

L/H

IC300

15

4

IC601 REG IC

BUS CONTROL

+11V

9

IC001 µ-COM

Q202

TV PROCESSOR

14

5

59 L/H

MUTE 11

MUTE

+7V

R 21

13

8

OVP

60 U/V

17 CVBS IN

G 20

1

Q109

Q303

+B

R 51

55 DEEMP

B 19

11

7

VC AMP

38 VC

G 50

G BUFFER

48 IF IN

IK 18

DRIVE

LATCH

Q110

8

B 49

49 IF IN

VC FILTER

Q108

IC003 MEMORY

54 AGC OUT

Q414

2

OSC

6

AGC MUTE

9

AGC

IICLK1 55

6

CLK

IF OUT 6

B/G SW

IIDAT1 53

5

DAT

7

41 KEY1

Q409

AUTO

40 KEY2

Q406, 408

CT55,CF55

HSYNC 47

41 SSCP/FBT

PROG+

PROGR

IC002 +5V REG

IC603 PHOTO COUPLER

SYNC

SYNC

HSYNC 25

CVES IN 13

+9V

Q208

FILTER

FILTER

S901

OUT

5

+5V

T851 FBT

3

4

IC602 ERROR AMP

MANUAL

1 IN

STBY 30

STBY-SW1

1

5

RESET

4

PROG–

PROGR

36 RESET

SIF IN 1

X358

B-Y 30

4

6

1

2

2

1

+5V

R-Y 29

S902

3.58MHz

11

35 EXTAL

IC004 IR DET

34 3.58

VOL+

TV SYS

2

X101

X443

+135V

200V

SIRCS 26

1

2

4.43MHz

CVBS SW OUT 38

7

2

S903

34 XTAL

35 4.43/3.58

1000V

+5V

–13V

1

D901

HOR OUT 40

H1

TIMER

Q902

9

4

VOL–

SELECT

EAST/WEST 45

LED

+15V

Q030

D802

3

TIMER

VERT POS 46

10

DRIVE

S904

VERT NEG 47

BUFFER

DUMPER

Q903

BLK/STC 39

T801

LED

RESP/

Q801

Q802

TV/VIDEO

COL SYS

6

IC351 1HDL

DRIVE

NICAM

26 BLK

H DRIVE

H OUT

H+

NICAM

1

S905

SYNC

5

H+

ST/BY

2

R-Y 32

11 R-Y R-Y 16

FV

IC801 (2/2)

S801

B-Y 31

12 B-Y B-Y 14

PIN AMP

56 IICLK0

BRT ABL 42

Q821

L804

H CENT

H–

3

54 IIDAT0

VPULSE 17

7

SCL

3

1

PIN OUT

H–

Q1513

13

4

VSYNC 48

8

SDA

ABL 22

D1505

D1504

V–

12 BLK

HDSW 27

EHTX-RAY 50

V SAW

5

D591

Q561

D561

IC801 (1/2)

PIN AMP

X RAY

+135V

5

IC551 V OUT

+

V+

7

4

2

–

6

HV

6

– 25 –

– 26 –

CN701

CN601

CN851

DY1

V901

PICTURE TUBE

AC IN

H+

H–

HDY

VDY

V+

V–

DY ASS'Y

KV-G21L3

RM-883

6-2. CIRCUIT BOARDS LOCATION

C

A

6-3. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS

Note:				Referenceinformation
• All capacitors are in µF unless otherwise noted.				RESISTOR	: RN	METAL FILM
• All electrolytic capacitors are rated at 50V unless otherwise noted.					: RC	SOLID
• All resistors are in ohms.					: FPRD	NONFLAMMABLE CARBON
	k = 1000 , M = 1000k				: FUSE	NONFLAMMABLE FUSIBLE
• Indication of resistance which does not have rating electrical					: RS	NONFLAMMABLE METAL OXIDE
	power is as follows.				: RB	NONFLAMMABLE CEMENT
		Pitch: 5 mm			: RW	NONFLAMMABLE WIREWOUND
		Rating electrical power 1/4W (CHIP: 1/10W)			: ∗	ADJUSTMENT RESISTOR
•			: nonflammable resistor.	COIL	: LF-8L	MICRO INDUCTOR
•		¢	: internal component.	CAPACITOR	: TA	TANTALUM
•			: panel designation or adjustment for repair.		: PS	STYROL
• All variable and adjustable resistors have characteristic curve B					: PP	POLYPROPYLENE
	unless otherwise noted.				: PT	MYLAR
• Readings are taken with a color-bar signal input.					: MPS	METALIZED POLYESTER
	no mark		: PAL		: MPP	METALIZED POLYPROPYLENE
(		)	: SECAM		: ALB	BIPOLAR
[		]	: NTSC 3.58		: ALT	HIGH TEMPERATURE
«		»	: NTSC 4.43		: ALR	HIGH RIPPLE

•Readings are taken with a 10 M digital m ultimeter.

•Voltage is dc with respect to ground unless otherwise noted.

•Voltage variations may be noted due to normal production toler- ances.

•All voltages are in V.

•* : Cannot be measured.

•Circled numbers are waveform reference.

•: B + bus.

•	: B – bus.
•	: signal path.	Note: The component identified by shading and
		mark ! are critical for safety. Replace only
		with part number specified.

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