Sony SLV-GA30, SLV-GA50, SLV-GA66 Service Manual

SLV-GA30/GA50/GA66/GA70K/GA77K/ GF80/GF90K/GF99K/P66/PH99

RMT-V254/V254A

SERVICE MANUAL

East European Model

SLV-P66/PH99

Ver 1.0 1998.10	ME Model
	SLV-GA30/GA50/GA66/GF99K
	Philippine Model
	SLV-GA77K/GF99K
	E Model
	SLV-GA30/GA50/GA70K/
	GA77K/GF80/GF90K/GF99K
Photo: SLV-GF99K	Thai Model
RMT-V254
	SLV-GA30/GA50/GA70K/
	GA77K/GF80/GF90K/GF99K

S MECHANISM

Refer to the SERVICE MANUAL of VHS

MECHANICAL ADJUSTMENT for

MECHANICAL ADJUSTMENTS. (9-921-647-11)

SPECIFICATIONS

VIDEO CASSETTE PLAYER

MICROFILM

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK !OR DOTTED LINE WITH

MARK !ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS

LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE

COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS

APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS

PUBLISHED BY SONY.

SAFETY CHECK-OUT

After correcting the original service problem, perform the following

safety checks before releasing the set to the customer.

1.Check the area of your repair for unsoldered or poorly-soldered connections. Check the entire board surface for solder splashes and bridges.

2.Check the interboard wiring to ensure that no wires are "pinched" or contact high-wattage resistors.

3.Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair. Point them out to the customer and recommend their replacement.

4.Look for parts which, through functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement.

5.Check the B+ voltage to see it is at the values specified.

6.Flexible Circuit Board Repairing

•Keep the temperature of the soldering iron around 270˚C during repairing.

•Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

•Be careful not to apply force on the conductor when soldering or unsoldering.

— 2 —

— 3 —

MODEL (SLV-)

GA30

GA50

P66

GA66

GA70K

FEATURES

ME

SG

PS

TK

ME

SG

PS

TK

EE

ME

PS

TK

NTSC 3.58 REC/PB

X/X

O/O

O/O

O/O

O/O

NTSC 4.43 REC/PB

X/O

O/O

O/O

O/O

O/O

PAL REC/PB

X/O

O/O

O/O

O/O

O/O

MESECAM REC/PB

X/O

O/O

O/O

O/O

O/O

NTSC PB ON PAL TV

O

O

O

O

O

REC MODE

NTSC

X

SP/EP

SP

SP

SP/EP

SP

PAL

X

SP/LP

SP

SP

SP/LP

SP

PLAY MODE

NTSC

SP/LP/EP

SP

SP/LP/EP

SP

SP

SP/LP/EP

SP

PAL

SP/LP

SP

SP/LP

SP

SP

SP/LP

SP

AUDIO SYSTEM

MONO

MONO

MONO

MONO

MONO

KARAOKE

X

X

X

X

O

KARAOKE PON

X

X

X

X

X

SOUNDS IN STEREO

X

X

X

X

X

SURROUND

X

X

X

O

X

TAPE SPEED

O

X

O

X

X

O

X

LINE IN (RCA PINS)

FRONT

X

X

X

3

X

REAR

X

2

2

3

2

LINE OUT(RCA PINS)

FRONT

X

X

X

3

X

REAR

2

2

2

3

2

RF IN/OUT

GK

GK

GK

GK

GK

REMOTE COMMANDER

RMT-V254A

RMT-V254

RMT-V254 RMT-V254

RMT-V254

MODEL (SLV-)

GA77K

GF80

PH99

GF90K

GF99K

FEATURES

PS

TK

PL

PS

TK

EE

PS

TK

ME

PS

TK

PL

NTSC 3.58 REC/PB

O/O

O/O

O/O

O/O

O/O

NTSC 4.43 REC/PB

O/O

X/X

O/O

O/O

O/O

O/O

X/X

PAL REC/PB

O/O

X/X

O/O

O/O

O/O

O/O

X/X

MESECAM REC/PB

O/O

X/X

O/O

O/O

O/O

O/O

X/X

NTSC PB ON PAL TV

O

X

O

O

O

O

X

REC MODE

NTSC

SP

SP

SP

SP

SP

SP/EP

PAL

SP

X

SP

SP

SP

SP

X

PLAY MODE

NTSC

SP

SP

SP

SP

SP

SP/LP/EP

PAL

SP

X

SP

SP

SP

SP

X

AUDIO SYSTEM

MONO

Hi-Fi

Hi-Fi

Hi-Fi

Hi-Fi

KARAOKE

O

X

X

O

O

KARAOKE PON

O

X

X

O

O

SOUNDS IN STEREO

X

X

X

X

O

SURROUND

O

X

X

X

O

TAPE SPEED

X

O

X

X

X

X

O

LINE IN (RCA PINS)

FRONT

3

3

3

3

3

REAR

3

3

3

3

3

LINE OUT(RCA PINS)

FRONT

3

X

X

X

3

REAR

3

3

3

3

3

RF IN/OUT

GK

USA

GK

GK

GK

GK

USA

REMOTE COMMANDER

RMT-V254

RMT-V254

RMT-V254

RMT-V254

RMT-V254

Model Asia Pan PS: Model Thai TK:	Model Gulf SG:	Abbreviation
Model Philippine PL:	Model European East EE:

	TABLE OF CONTENTS
1. GENERAL	5-2. System Control — Servo Peripheral Circuit Interface

Step 1 Unpacking ······································(MA-336 Board IC201) ························

Step 2 Setting up the remote commander ··································5-3. System Control — Mechanism Interface1-1

Step 3 Connecting the unit ··································(MA-336 Board IC201) ························1-1 Step 4 Tuning your TV to the unit ·············································5-4. System Control — Audio Block Interface 1-2

Playing a tape ································································(MA-336 Board IC201)

Playing/searching at various speeds ··········································5-6. Servo/System Control Microprocessor Pin Functions1-3 Karaoke sing-along ······························································(MA-336 Board IC201)

Enjoying the surround sound (Virtual Surround)

(SLV-GF-99KME/PS only) ·············································6. ADJUSTMENTS 1-5 Adjusting the picture (Resolution Control) ·······························6-1 Mechanical Adjustments ························1-5

Editing with another VCR ··································6-2. Electrical Adjustments ·························1-6 Synchronised recording ····························································2-1. Preparation before Adjustment

Troubleshooting ·······························································2-1-1. Equipment Required

Index to parts and controls ··································2-1-2. Equipment Connection ·························1-7

		2-1-3. Set-up of Adjustment ··························
2.	DISASSEMBLY	2-1-4. Alignment Tape ····························
		2-1-5. Input/Output Levels and Impedance ···················
2-1. Upper Case, Panel Block Assembly ································ 2-1
		2-1-6. Adjustment Sequence ·························
2-2. FR-140, 141, 142, JK-166, MJ-91 Boards ······················ 2-1
2-3.		2-2. POwer Supply Check
	Rear Panel ·······························································
2-4.		2-2-1. Output Voltage Check (MA-336 Board)
	MA-336 Board ·····························································
2-5.		2-3. Servo System Check ··························
	Mechanism Deck ··································
2-6.		2-3-1. RF Switching Position Adjustment (MA-336 Board)		6-3
	Internal Views ·····························································
2-7.		2-4.	Audio System Adjustment ·······················
	Circuit Boards Location ·················································· 2-5
		2-4-1. Hi-Fi Audio System Adjustment (Hi-Fi model only) ······ 6-3
3.	BLOCK DIAGRAMS	1.	AF Switching Position Adjustment (MA-336 Board) ····· 6-4
3-1.		2-4-2. Normal Audio System Adjustment ····················
	Overall Block Diagram ··················································· 3-1
		1.	ACE Head Adjustment ·························
3-2. Video Block Diagram ······················································ 3-3
		2.	E-E Output Level Check ························
3-3. Servo/System Control Block Diagram ···························· 3-5
3-4.		3.	Recording Bias Check ·························
	Audio Block Diagram ····················································· 3-7
3-5.		2-5. Adjusting Parts Location Diagram ····················
	Karaoke Block Diagram ·················································· 3-9

3-6. Power Supply Block Diagram ······································· 3-11

7.REPAIR PARTS LIST

4. PRINTED WIRING BOARDS AND	7-1. Exploded Views ····························
SCHEMATIC DIAGRAMS	7-1-1. Front Panel and Upper Case Section ···················

		7-1-2. Chassis Section ····························
	4-1. Frame Schematic Diagram ·············································· 4-3
		7-1-3. Mechanism Deck Section-1 ·······················
	4-2. Printed Wiring Boards and Schematic Diagrams ············ 4-5
		7-1-4. Mechanism Deck Section-2 ·······················
	• MA-336 (Video, Audio)(1/4) Schematic Diagram ······· 4-5
	• MA-336 (Servo/System Control)(2/4)	7-1-5. Mechanism Deck Section-3 ·······················
		7-2. Electrical Parts List ··························
	Schematic Diagram ········································· 4-7

•MA-336 (HiFi, Tuner)(3/4) Schematic Diagram ·········· 4-9

•MA-336 (Karaoke, Power Supply)(4/4)

Schematic Diagram ······································· 4-11

• MA-336 (Video, Audio, Servo/System Control, Tuner,

Karaoke, Power Supply) Printed Wiring Board ·········· 4-13

•SR-35 (Surround) Printed Wiring Board ···················· 4-16

•SR-35 (Surround) Schematic Diagram ······················· 4-17

•FR-142 (Mode Control) Printed Wiring Board ··········· 4-19

•FR-142 (Mode Control) Schematic Diagram ············· 4-21

•FR-140 (Power, Eject Switches)

Printed Wiring Board and

Schematic Diagram ······································· 4-23

• FR-141 (Tape Operation)

Printed Wiring Board and

Schematic Diagram ······································· 4-24

• MJ-91 (MIC Jack, Amp)

Printed Wiring Board and

Schematic Diagram ······································· 4-25

• JK-166 (Line In/Out)

Printed Wiring Board and

Schematic Diagram ······································· 4-26

5.INTERFACE, IC PIN FUNCTION

DESCRIPTION

5-1. System Control — Video Block Interface

(MA-336 Board IC201) ··················································· 5-1

— 4 —

SLV-GA30/GA50/GA66/GA70K/GA77K/GF80/GF90K/GF99K/P66/PH99

SECTION 1 GENERAL

This section is extracted from instruction manual.(SLV-GF90K/GF99K model)

1-1

1-2

1-3

1-4

1-5

1-6

1-7

1-8E

SLV-GA30/GA50/GA66/GA70K/GA77K/GF80/GF90K/GF99K/P66/PH99 SECTION 2

DISASSEMBLY

NOTE: Follow the disassembly procedure in the numerical order given.

2-1. UPPER CASE, PANEL BLOCK ASSEMBLY

1 Tapping screw

3 Upper case

7 Flat cable (From CN206 on MA-335 board)

8 Flat cable (From CN201 on MA-335 board)

9 Connector (From CN207 on MA-336 board)

Hooks

!º Panel block assembly (Engaged by the hook.)

Hooks

Hooks

Hooks

2 Tapping screw

4 Flat cable (From CN206 on MA-336 board)

5 Connector (From CN209 on MA-336 board)

6 Connector (From CN208 on MA-336 board)

2-2. FR-140, 141, 142, JK-166, MJ-91 BOARDS

	!™ BV sumitite (B3)
!£ MJ-91 board
!¡ MIC jack holder	9
2 FR-140 board	5 B2.6 × 8
	!º B2.6 × 8
1 B2.6 × 8

6 FR-142 board

7 B2.6 × 8

8 JK-166 board

3 B2.6 × 8

Front panel assembly

4 FR-141 board

2-1

2-3. REAR PANEL

3 Rear panel

(Engaged by the hook.)

Hooks

1 BVTP 3 × 12

Hooks

Hooks

2 POWER code stopper

2-4. MA-336 BOARD

1 Sumitite (B3) +BV

2 MA-336 board with mechanism deck

2-2

2-5. MECHANISM DECK

2 Three connectors

5 BVTP 3 × 12

3 BVTP 3 × 12

9 Mechanism deck

1

8 MA-336 board

4 MD base (R)

7 MD base (M)

6 MD base (R)

2-3

2-6. INTERNAL VIEWS	Abbreviation
	SG: Gulf Model	EE: East European Model
— Top View —	PS: Pan Asia Model	PL: Philippine Model
	TK: Thai Model
M901
Drum Assembly
DZH-78A-R 1-759-183-11
(GA30:PS,TK/GA50:PS,TK/GA70K:PS,TK/GA77K:PS,TK/P66)
DZH-91A-R 1-759-449-11
(GF80:PS,TK/GF90K:PS,TK/GF99K:ME,PS,TK/PH99)
DZH-90A-R 1-759-451-11
(GF99K:PL)
DZH-89A-R 1-759-453-11
(GA30:SG,ME/GA50:SG,ME/GA66:ME)
DZH-71D-R 1-759-455-11	ACE head block assembly
(GA77K:PL)
	A-6759-620-A
FE head
1-500-144-11
	Pinch press block assembly
	A-6759-615-A
	Reel (T) table
Reel (S) table	3-977-508-01
3-977-507-01

FL complete assembly

A-6759-619-B

— Bottom View —

M902

DC motor (capstan) 1-698-971-11

Rubber belt

3-977-510-01

M903

Cam motor assembly

X-3947-577-1

2-4

2-7. CIRCUIT BOARDS LOCATION

MJ-91	MA-336
(MIC JACK, AMP)	VIDEO, AUDIO,
[GA70K/GA77K/GF90K/GF99K]	SERVO/SYSTEM CONTROL,
FR-140	TUNER, POWER SUPPLY
(POWER,
EJECT SWITCHES)

JK-166

(LINE IN/OUT) [GA66/GA77K/GF80/ GF90K/GF99K/PH99]

FR-142

(MODE CONTROL)

	SR-35
FR-141	(SURROUND)
(TAPE OPERATION)	[GA66/GA77K/GF99K]

2-5E

SLV-GA30/GA50/GA66/GA70K/GA77K/GF80/GF90K/GF99K/P66/PH99

SECTION 3

BLOCK DIAGRAMS

3-1. OVERALL BLOCK DIAGRAM

MA-336 BOARD (SEE PAGE 4-5, 7, 9, 11)

VIDEO

IC101

(1/2)

IC201

(1/2)

HEAD

Q801

CNJ801

SP

REC/PB (RF)

OSD

BUFF

VIDEO

CH1

LINE OUT1

VIDEO

REC/PB AMP

Q224,225

SP

REC/PB (RF)

Y/C PROC.

CH1

(SEE PAGE 4-26)

CNJ801

EXCEPT

JK-166

CNJ651

BOARD

VIDEO

V1

GA77K:PL/GF99K:PL

VIDEO

LINE IN 1

MESECAM

LINE OUT2

GF90K/GF99K

GA66/GA77K

JS931

L

GF80/GF90K/GF99K/PH99 MODEL

JS932

AUDIO

(SEE PAGE 4-26)

LINE OUT2

JK-166

V DATA / V CLK

R

QVD

BOARD

CNJ651

V ENV

GA66/GA77K/GF99K MODEL

VIDEO

V2

CSYNC

LINE IN 2

GF80/GF90K/GF99K/PH99 MODEL

GA30/GA50/

EXCEPT GF80/GF90K/

AUDIO

IC302

IC301

GF80/GF90K/PH99

GA66/GF80/

P66/PH99

GF99K/PH99

HEAD

PB RF

L1

JS904

JS908

JS927

CNJ801

CH1

JS929

GA66/

L

REC RF

AUDIO

AFM

R1

GA77K

JS905

JS909

JS928

LINE OUT1

AUDIO

REC/PB

R

AMP

AF SWP

PROCESSOR

RF

GF80/PH99

JS903

GA66/GF80/PH99

GA66/GA77K

CH2

REC P

(HIFI)

JS930

GA30/GA50/GA66/P66

JS902

EXCEPT

RFU801

NA IN

JS910

JS906

JS907

GA30 MODEL

NA OUT

GA30/GA50/

VIDEO

IN

IC101

(2/2)

GA70K/P66

GA66/GF90K

TV/VTR

GA30/GA66/

AUDIO

OUT

L1

R1

L2

R2

AF ENV

SDA/SCL

GF90K

AUDIO

IC752

GF90K/P66

AFM

PROCESSOR

AMS

/GF99K

(NORMAL)

REC/PB

MESECAM

HEAD

GA40K/GA70K/GA77K

V DATA / V CLK

EXCEPT

GF90K/GF99K MODEL

ERASE

GA30

JS901

QVD

HEAD

T401

Q401-404 Q405,406

GA50/GA70K/P66

V ENV

FULL

BIAS

BIAS

CSYNC

MODEL

ERASE

OSC

OSC

HEAD

IC751

IC752

CNJ801

L

JS921

GA66/GA77K/GF99K MODEL

AUDIO

INPUT

SR-35 BOARD

LINE IN 1

JS922

GA66 MODEL

R

SELECTOR

GA70K/GA77K

EXCEPT

JS701

(SEE PAGE 4-17)

GA66/GA77K

GF90K/GF99K MODEL

GA30

JS702

(SEE PAGE 4-26)

IC502

GA66/GA77K MODEL

JK-166

IC701

IC702

IC703

IC503

BOARD

GA66/GA77K

VOCAL

SS/

SURR(B)

KARAOKE

SIGNAL

GF90K/GF99K MODEL

CANCEL

SURR(A)

PROC.

CONTROL

CNJ651

L2

/SRAM

L

AUDIO

GA77K/GF99K MODEL

LINE IN 1

R

R2

AMS

GA66/GA70K/GA77K

GF90K/GF99K

SDA / SCL

GF80/GF90K/GF99K/PH99

JS925

AF ENV

JS926

AF SWP

REC P

PH202

T REEL

T REEL

MJ-91 BOARD (SEE PAGE 4-25)

FG

PH201

S REEL

S REEL

FG

MCJ501

Q201

1

IC501

T

T SENS

IC501

MIC 1

MIC

SENS

MIC IN

Q202

MCJ502

S

S SENS

2

SENS

MIC 2

TE/LED

S501

IC203

KARAOKE PON

KARAOKE

KR SW/ECHO VR

RESET

ECHO

(SEE PAGE 4-21)

FR-142 BOARD

16

GA70K/GA77K/GF90K/GF99K

3-1

IC201	(2/2)		MD BLOCK
	DRUM DA		M			DRUM
DRUM					MOTOR
SERVO	DRUM FG/PG		DRUM
			FG/PG
	CAP RVS		M	CAPSTAN
CAPSTAN					MOTOR
SERVO
	CAP FG		CAPSTAN
			FG
	CTL						CTL
SYSTEM		IC202				HEAD
CONTROL
		CAM	M			CAM
		MOTOR
					MOTOR
		DRIVE
	MODE1-4		CAM			S201
			ENCODER
			Q601					EXCEPT
			Q602					GA77K:PL/GF99K:PL
	LED POWER		LED
			DRIVE
	KEY1		S601,602				D601
			FUNCTION
		KEY(1)						FR-140 BOARD
			KEY
								(SEE PAGE 4-23)
			S606-609					EXCEPT
			S620					GA30 MODEL
	KEY2
		KEY(2)	FUNCTION
		KEY(4)	KEY				D602
									FR-141
	SYNC REC
									BOARD
								(SEE PAGE 4-24)
			S615
	KEY4		LINE				GA66/GA77K/GF80/
			SELECT				GF90K/GF99K/PH99
	S203		S603							S610
	REC
			VIRTUAL							NTSC
			SOUND							PB
			GA66							EXCEPT
			GA77K/GF99K					GA77K:PL/GF99K:PL
										S605
										COLOR
			S611-614							SYSTEM
	KEY3		FUNCTION							EXCEPT
			KEY					GA77K:PL/GF99K:PL
	S204
	PAUSE
	ADJ-A
	ADJ-B
	Q207-209	GF80/GF90K
	Q211-213	/GF99K/PH99
	Q233	GA77K:PL/GF99K:PL						D603-607
								D608		EXCEPT GA30
	LED
								D609
	DRIVE
								D610-612		GF80/GF90K/GF99K/PH99
								D613		GA30:PL/GA40K/GA77K:PL/GF99K:PL
								D614		GA66/GA77K/GF99K MODEL
								D615,616
			IC601
	RMC		REMOTE
			CONTROL							FR-142 BOARD
			RECEIVER
										(SEE PAGE 3-21)
	3-2

SLV-GA30/GA50/GA66/GA70K/GA77K/GF80/GF90K/GF99K/P66/PH99

3-2. VIDEO BLOCK DIAGRAM

CN101 3 REC/PB

MA-336 BOARD

(SEE PAGE 4-5)

CN101

5Vp-p

V SW P

RF SW P

IC201

24

25Hz

3

FOR

Q102

V ENV

IC201

13

TO/FROM

RFU801

CN101 2 PB

IC101

MESECAM

IC201

80

SYSCON

CHECK

PB RF

BLOCK

FROM

BUFF

VIDEO

(SEE PAGE 3-5)

2

QVD

IC201

27

AUDIO RFU AUDIO

2

AUDIO

REC/PB AMP

BLOCK

IN

Y/C PROCESSOR

(SEE PAGE 3-8)

DRUM

81

79

78

84

97

4

TV/VTR

VIDEO

CN102

DRUM FF

IC101 %™ REC/PB

EXCEPT

OUT

ENV

IC101 %° PB

0.1V/div 0.2 sec/div

HEAD

89

HPF

GA77K:PL/ Q224,225

1

VIDEO

6

DET

GF99K:PL

SP

SP1

CH1

SW28

5

88

REC

H

REC:2.2Vp-p

SW30

MUTE

H

0.58Vp-p

PB:2.3Vp-p

IC201

(1/3)

SP1

SW20

SW21

SW29

P

Q215,216

Q801

CNJ801

SP

ACC

R

R

2

86

SW27

N

P

CK

55

54

6dB

C

6dB

52

BUFF

43

OSD

45

BUFF

VIDEO

SP

SP

B.D

AMP

SQUELCH

AMP

OUT 1

SP2

P

CH2

87

CTL TRAP

IC201 $£$° REC/PB

1

fH HPF

IC101 %• REC/PB

Q205,214

VCA

CLEAR

52

REC

2fSC

SP2

SW18

SYNC

53

MUTE

AMP

SW19

P

SEP

TRAP

VIDEO

2Vp-p

R

SW24

H

REC:0.4Vp-p

SQUELCH

51

IC201 %£ REC/PB

H

COMP

HPF

ALC

IC101 *§, *ªREC

P

C

PB:0.5Vp-p

(SEE PAGE 4-26)

R

LPF

LPF

8.86716MHz

2.6Vp-p

CNJ652

CN651

R P

MIX

C.K

B.E

IC101 #° REC/PB

3

V OUT2

VIDEO

LEVEL

3

OUT 2

SW7

CN202

0.5V/div 0.1 sec/div

MAIN

CCD

JK-166

SW25

58

35

CONV.1

LPF

REC:0.41Vp-p

629

BOARD

R

SW26

H

PB:0.6Vp-p

TRAP

2FL

4 PHASE

1/2

DL

IC101 $§ REC/PB

VCO

GEN

P

C

DL

VCA

60

46

GA66/GA77K/GF99K

MAIN

C

R

CCD

MODEL

FM

CONV.2

LPF

REC:0.28Vp-p

AGC

H

PB:0.35Vp-p

R

P EQ

SW23

P

IC101 ^º REC/PB

CNJ801

SW8

R

23

24

LPF

26

39

SW22

VIDEO

31

ATT

MMS

P

IN 1

(-10dB)

DL

Y

REC:0.28Vp-p

H

CCD

PB:0.35Vp-p

CNJ651

CN651

CN202

G EQ

DLIM

DEMO

SUB

MAIN

21

42

IC101 $¢ REC/PB

LPF

DE-EMPH

VIDEO

V IN2

1

30

ATT

VIDEO

IN 2

1

(-10dB)

AGC

SW10

CLOCK

44

1M

7M

FM

MAIN EMPH

Y

JK-166

LPF

P

8.8671MHz

0.45Vp-p

HPF

LPF

MODE

CARRIER

R

LPF

SW11

IC101 #ª REC/PB

BOARD

OFFSET W.C/DC

ATT

R

IC101 $™ REC/PB

(SEE PAGE

28

SW13

P

(-10dB)

SW5

4-26)

GA66/GA77K

P

N.L.

REC:0.5Vp-p

GF80/GF90K/GF99K/PH99

R

DE EMPH

H

SW17

PB:0.6Vp-p

MODEL

H

REC:0.35Vp-p

N.L.

IC101 @¡ REC/PB

R P

CLP

PB:0.38Vp-p

D.E.

EMPH

N.C.

IC101 %º REC/PB

0.4Vp-p

Y NR

H

FBC/

SW14

H

4.6Vp-p

ALC

DO

SYNC

50

C SYNC

IC201

54

DO REC

SEP

CLP

CR DET

IC101 ^ª REC/PB

69

2fSC

X-TAL

REC

VCO/OSC

APC

IC101 !• REC/PB

8.667MHz

0.46Vp-p

IC101 &¡ REC/PB

PB

SERIAL

63

V DATA

IC201

100

APC

CONT

62

V CLOCK

IC201

99

H

REC:0.4Vp-p

PB:0.48Vp-p

REC

PULSE

TO/FROM

0.1Vp-p

GEN.

KILL

64

KILL

IC201

19

AFC

3.579545MHz

SYSCON

BLOCK

75

73

71 76

16

18 17

19

(SEE PAGE

IC101 &° REC/PB

Q217-219

3-5)

SHARPNESS

X101

X102

CONT

4.43MHz

3.58MHz

0.54Vp-p

SHARP 1

IC201

20

4.433619MHz

SHARP 2

IC201

29

IC101 &£ REC/PB

EXCEPT GA77K:PL/GF99K:PL MODEL

Q104

Q103

Q204

SHAPNESS IC201

94

PAL

Q101

NTSC

IC201

18

4.433619MHz

0.66Vp-p

16

3-3

3-4

SLV-GA30/GA50/GA66/GA70K/GA77K/GF80/GF90K/GF99K/P66/PH99

3-3. SERVO/SYSTEM CONTROL BLOCK DIAGRAM

MA-336 BOARD (SEE PAGE 4-7)

FR-140 BOARD (SEE PAGE 4-23)

IC201

IC204

IC203

(3/3)

Q601

SYSTEM CONTROL

POWER

D601

TO

12V

5V

7 RESET

ON

3

1

8

16

RESET

POWER LED 67

POWER ON

IC502

4

KARAOKE

REG

DRUM MOTOR

BLOCK

IC201 @§ REC/PB

(SEE PAGE 3-10)

CN207

CN605

Q602

M901

CN204

LED POWER

POWER

VCC

7

7

D5V

M12V

4

IC201

(2/3)

4

ON

88

T REEL FG

EXCEPT

SERVO CONTROL

KEY 1

OUTPUT

GA77K:PL/GF99K:PL

0.88MHz

5Vp-p

PH202

KEY 1

3

1

1

MODEL

D VS

S601

1

1

26

DRUM DA

T REEL

S602

FG

ON

EJECT

M

OUTPUT

STANDBY

KEY (1)

89

S REEL FG

3

IC201 #ª REC/PB

3

PH201

CN210

S REEL

HALL

KEY (1)

MATRIX

FG

DEVICE

1

TEST

4.1Vp-p

2

25Hz

FR-141 BOARD

12

D PG

M12V

Q201

T SENS

EXCEPT GA30

5

5

39

DRUM PG

CN604

(SEE PAGE 4-24)

KEY 2

TAKE END

KEY 2

PG

SENSOR

4

1

1

D203

S606

S607

S608

S620

FG

STOP

PLAY

FF

SYNC

D FG

T/S LED

3

3

38

DRUM FG

11 S SENS

REC

Q202

KEY (2)

IC201 #• REC/PB

3

3

SUPPLY END

KEY (4)

+5V

SENSOR

4

4

CAPSTAN MOTOR

Q203

EXCEPT GA30

S609

D602

REW

LED

Q210

M902

4Vp-p

74

T/E LED

D5V

DRIVE

LED

SYNC REC

CN205

600Hz

SYNC REC 86

5

DRIVE

5

VM

7

7

M12V

CN208

RV201

5V

U+

1

1

D5V

VCC

GF80/GF90K/GF99K

A SWP

HALL

U-

6

6

LIMITER

66

CAP PWM

9

A SWP ADJ

TL

/PH99

ADJ

GA66/GA77K/GF80/GF90K/GF99K/PH99

DEVICE

V+

CN2081

CN601

V-

LINE 1

D5V

KEY (4)

S615

11

W+

RV202

5

5V

KEY 4

6

KEY 4

12

LINE

W-

CTL REF

V SWP

4

LINE 2

SELECT

4

4

8

V SWP ADJ

S203

IC201 @° REC/PB

ADJ

U

96

CAP QR

REC

CAP VS

S202

KEY (1)

AUTO

S605

V

5

5

25

CAP VS

14

REC

2

COLOR

5Vp-p

1

REC PRF

PAL/MESECAM

CAP RVS

1.18MHz

PROOF

SYSTEM

W

2

2

55

CAP RVS

IC201 &™ REC/PB

IC201 $º REC/PB

X201

73 10M OUT

NTSC

IC201 #¡ REC

CAPSTAN

3

3

CAP FG

40

CAP FG

10MHz

72

10M IN

FG

NTSC 3.58

3.2Vp-p

KEY (2)

S610

10MHz

13

4.6Vp-p

3

NTSC

758Hz

3.1Vp-p

S603

NTSC 4.43

CN401

25Hz

PB

VIRTUAL

6

31

CTL IN+

CTL

SOUND

ON PAL TV

HEAD

5

32

CTL IN-

GA66 /GA77K/GF99K

EXCEPT GA77K:PL/GF99K:PL

IC202

IC201 #™ REC

CN206

CN602

EP

S614

CAM

KEY 3

KEY 3

5

7

CAM

MOTOR DRIVE

7

SP/EP

CN203

S204

S611

S612

3.1Vp-p

SP

MOTOR

3

10

CAM+

25Hz

PAUSE

AUTO/

ON SCREEN

M

ADJ-A

MANUAL

DISPLAY

S613

1

2

CAM-

IN2

4

95

CAM

ADJ-A

92

6

PICTURE

6

ADJ-B 93

ADJ-B

5

CONTROL

5

MODE1

MODE1

IC601

+5V

CAM

62

MODE1

MODE2

MODE2

REMOCON

REMOTE

MODE2

ENCODER

IC201 @£@¢ REC/PB

63

REMOCON 82

13

1

CONTROL 2

MODE3

MODE3

13

MECHA

64

MODE3

Q207-209

RECEIVER

( POSITION

(

MODE4

MODE4

65 MODE4

Q211-213

GF80/GF90K/GF99K/PH99 MODEL

25Hz

5Vp-p

IC101

81

RF SWP

24

RF SWP

Q233

GA77K:PL/GF99K:PL MODEL

SHARPNESS LED

IC101

84

V ENV

13

V ENV

SHARP LED 87

2

2

IC201 %¢ REC/PB

RFU801

4

,Q220

C

MESECAM DET

80

TV/VTR

TRACK LED

56

TRACKING LED

3

D603-607

3

IC101

51

QVD

27

QVD

L LED

84

L LED

10

D608

EXCEPT GA30

LED

10

HF LED

83

HIFI LED

11

D609

DRIVE

11

IC101

50

C SYNC

54

C SYNC

R LED

85

R LED

12

D610-612

GF80/GF90K/GF99K/PH99

H

4Vp-p

12

TO/FROM

IC101

63

V DATA

100 V DATA

DNS 5 LED

9

9

D613

GA77K:PL/GF99K:PL

VIDEO

IC101

62

V CLOCK

99

V CLK

DNS 4 LED

8

BLOCK

8

(SEE PAGE 3-4)

IC101

64

KILL

19

KILL IN

CN201

CN601

D614

GA66/GA77K/GF99K

REC LED

D615,616

REC LED

81

2

Q217

B

SHARP 1

20

SHARP 1

14

C IN LED

57

CASSETTE LED

3

Q218

B

SHARP 2

29

SHARP 2

13

TV/VTR LED

1

IC101

17

SHARPNESS

94

SHARPNESS VR

15

GA70K/GA77K

IC101

18

,Q204

B

NTSC

18

NTSC

DNS 5 LED 79

DNS 4 LED 78

GF90K/GF99K MODEL

DNS 3 LED

DNS 3 LED 77

4

Q581

C

AMS

58 AMS

12

DNS 2 LED 76

DNS 2 LED

5

11

IC101

99

A MUTE

21

AU MUTE

DNS 1 LED 75

DNS 1 LED

7

9

Q751

B

PB

90

PB

DEST 2

7

SURROUND LED

8

8

FR-142 BOARD

Q752

B

LINE 1

91

LINE 1

Q221,222,226

S801

OTHER

(SEE PAGE 4-21)

TO/FROM

LED

TV

AUDIO

IC301

41

SDA

98

AF DATA

DRIVE

SYSTEM

BLOCK

IC301

42

SCL

97

AF CLK

TV

(SEE PAGE 3-8)

SR-C1

TO

IC301

39

AF ENV

14

A ENV

SUR CONT 1 59

GF90K/GF99K

6

SURROUND

SR-C2

IC302

1

,IC301

40

AF SWP

23

AF SWP

SUR CONT 2 60

BLOCK

5

(SEE PAGE 3-10)

IC302

REC P

SUR CONT 3 61

SR-C3

SR-35 BOARD

Q250, 251

5

17

REC P

4

FROM

CN701

GA66/GA77K/GF99K

EXCEPT GA30

KR SW/

CN702

(SEE PAGE 3-9)

KARAOKE

CN201

7

SW

ECHO VR

16

BLOCK

3-5

3-6