Sony FH-G50 Manuale utente

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FH-G50/MHC-501/$200

SERVICE

MANUAL

FH-G50

and

MHC-501/S200

are

composed

of

following

models.

As

for

the

service

manual,

it

is

issued

for

each

component

models,

then,

please

refer

to

it.

COMPONENT

MODEL

NAME

FOR

FH-G50

and

MHC-501/S200

US

Model

Canadian

Model

MHC-S200

AEP

Model

MHC-501

Component

2°"

|__FH-G50

MHC-501

MHC-S200

_E

Model

Tuner,

deck,

|

HCD-H501

Australian

Model

CD,

amplifier

Tourist

Mode!

Speaker

System

|

SS-H501

SS-H701

FH-G50

SPECIFICATIONS

PARTS

LIST

(Accessories

&

Packing

Materials)

Supplied

accessories

AM

loop

antenna

(1)

Remote

commander

(1)

Sony

SUM-3

(NS)

batteries

(2)

FM

lead

antenna

(1)

Design

and

specifications

are

subject

to

change

without

notice.

@

Abbreviation

CND

:

Canadian

MY:

Malaysia

IT

3

Italian

SP:

Singapore

G:

German

MX:

Mexican

EE

:EastEuropean

AR

:

Argentine

EA:

Saudi

Arabia

JE:

Tourist

AUS

:

Australian

HK

—:

Hong Kong

MICROFILM

9-960-149-11

Sony

Corporation

Consumer

A&V

Products

Company

Home

A&V

Products

Div.

NOTE:

@

Items

marked

“

*

"are

not

stocked

since

they

are

seldom

required

for

routine

service.

Some

delay

should

be

anticipated

when

ordering

these

items.

Part

No.

Description

1-473-039-11

COMMANDER,

STANDARD

(RM-S22)

1-501-374-11

ANTENNNA,

LOOP

1-501-594-11

ANTENNNA,

(FM)

(501:EXCEPT

G)

1-501-659-11

ANTENNNA,

(FM)

(G50,

$200)

1-769-306-11

CORD,

SPEAKER

(FOR

SS)

3-798-355-11

MANUAL,

INSTRUCTION

(ENGLISH)

(S200:US,

CND/G50:

AUS)

3-798-355-41

MANUAL,

INSTRUCTION

(FRENCH)

(S200:CND/G5O:E,

BA,

MY)

3-798-355-51

MANUAL,

INSTRUCTION

(ENGLISH/SPANISH/CHINESE)

(G50:E,

BA, SP,

MY,

MX, HK,

AR)

3-798-355-61

MANUAL,

INSTRUCTION

(ENGLISH/KOREAN/PORTUGUESE/

RUSSIAN)

(G50:

JE)

3-198-355-71

MANUAL,

INSTRUCTION

(ARABIC)

(G50:E,

BA)

3-198-356-41

MANUAL,

INSTRUCTION

acacia

rhage

(501:

AEP

3-798-356-51

MANUAL,

INSTRUCTION

(GERMAN)

(501:G)

3-798-356-61

MANUAL,

INSTRUCTION

(ITALIAN)

(501:ABP,

IT)

3-798-356-71

MANUAL,

INSTRUCTION

(ENGLISH/GERMAN)

(501:AEP,

EE)

3-798~-356-81

MANUAL,

INSTRUCTION

(RUSSIAN/POLISH)

(501:EE)

3-798-356-91

MANUAL,

INSTRUCTION

(DANISH,

FINNISH,

SWEDISH)

(501:

AEP)

4-941-762-01

COVER,

BATTERY

(FOR

RM-S22)

%

4-971-217-01

CUSHION

(FOR

SS)

*

4-972-969-01

CUSHION

(FRONT)

(FOR

HCD-501)

*

4-972-970-01

CUSHION

(REAR)

(FOR

HCD-501)

4-972-973-01

INDIVIDUAL

CARTON

(S200)

4-972-974-01

INDIVIDUAL

CARTON

(501:EXCEPT

EE)

4-972-975-01

INDIVIDUAL

CARTON

(5(

)

4-972-976-01

INDIVIDUAL

CARTON

(G50:AUS)

4-972-977-01

INDIVIDUAL

CARTON

(G50:AR,

B,

HK,

MX,

MY,

SP)

He

ee

¥

4-972-978-01

INDIVIDUAL

CARTON

(G50:EA,

JE)

MINI

Hi-Fi

COMPONENT

SYSTEM

SONY.

English

95B02102-1

Printed

in

Japan

4199.2

Published

by

Home

A&V

Products

Div.

Quality

Engineering

Dept.

SERVICE

MANUAL

@

HCD-H501

is

the

tuner,

deck,

CD

and

amplifier

section

in

FH-G50.

@

HCD-H501

is

the

tuner,

deck,

CD

and

amplifier

section

in

MHC-501

and

MHC-S200.

HCD-H501

US

Model

Canadian

Model

AEP.

Model

UK

Model

E

Model

Australian

Model

Tourist

Model

Photo

:

AEP

Model

Dolby

noise

reduction

manufactured

under

license

from

Model

Name

Using

Similar

Mechanism

HOD-H801

Dolby

Laboratories

Licensing

Corporation,

cD

.

“DOLBY”

and

the

double-D

symbol

DO

are

trademarks

of

|

section

CD

Mechanism

Type

CDM28-5BD19

Dolby

Laboratories

Licensing

Corporation.

Base

Unit

Name

BU-5BD19

Tape

deck

|Model

Name

Using

Similar

Mechanism

NEW

Section

Tape

Transport

Mechanism

Type

TCM180VW-H13

SPECIFICATIONS

CD

player

section

System

Compact

disc

digital

audio

system

Laser

Semiconductor

laser

Wavelength

780-790.

nm

Frequency

response

2

Hz~20

kHz

Tuner

section

FM

stereo,

FM/AM

superheterodyne

tuner

FM

tuner

section

Tuning

range

87.5

-108.0

MHz

(50

kHz

step

for

except

US,

Canadian,

East

European

model)

(100kHz

step

for

US,

Canadian

model)

FMI

:

65-

74MHz

(LOkHz

step)

FM2

:

87.5-

108MHz

(East

European

model)

Antenna

FM

lead

antenna

Antenna

terminals

75

ohm

unbalanced

Intermediate

frequency

10.7

MHz

AM

tuner

section

Tuning

range

US,

Canadian

model

:

AM

:

$30~

1,710kHz

(10kHz

step)

AM

:

$31

1,710kHz

(9kHz

step)

AEP,

UK,

East

European,

German

model

:

MW

:

531~

1,602kHz

(9kHz

step)

LW

:

153-279kHz

Italian

model

MW

:

522-

1,611kHz

(9kHz

step)

LW

:

153-279kHz

E,

Saudi

Arabia,

Argentine,

Hong

Kong,

Mexican,

Malaysia,

Singapore,

Australian,

Tourist

model

:

MW:

531

-

1,602

kHz

(9

kHz

step)

530

-

1,710

kHz

(10kHz

step)

SW:

5.95

-

17.9

kHz

(E,

Saudi

Arabia,

Hong

Kong,

Tourist,

Malaysia,

Singapore

model)

AM

loop

aerial

External

aerial

terminals

Intermediate

frequency

450

kHz

Tape

player

section

Recording

system

4-track

2-channel

stereo

Frequency

response

(DOLBY

NR

OFF)

60

~

13,000

Hz

(3

dB),

using

Sony

TYPE

I

cassette

60

-

14,000

Hz

(£3

dB),

using

Sony

TYPE

II

cassette

Wow

and

flutter

0.1%

WRMS

+0.3%

(DIN)

—

Continued

on

page

2

~

Antenna

COMPACT

DISC

DECK

RECEIVER

SONY.

Amplifier

section

Peak

music

power

output:

400

W

(2

speakers

driven)

Continuous

RMS

power

output

40

+

40

W

(6

ohms

at

1

kHz,

5%

THD)

Inputs

MIX MIC

(phone

jack):

Sensitivity

1

mV,

impedance

600

ohms

AUX

IN:

Sensitivity

450

mV,

impedance

47

kilohms

Outputs

PHONES

(stereo

phone

jack):

accept

headphones

of

8

ohms

or

more.

accept

impedance

of

6

to

16

ohms.

SPEAKER:

Speaker

section

Speaker

system

2-way

system

Speaker

units

Woofer:

14

cm

dia.,

cone

type

Tweeter:

5

cm

dia.

cone

type

Enclosure

Bass

reflex

Frequency

range

60

Hz,

-

20

kHz

Sensitivity

87

dB/W/m

Rated

impedance

6

ohms

Dimensions

_

Approx.

210

x

325

x

250

mm

(w/h/d)

Mass

Approx.

3.6

kg

net

per

speaker

Supplied

accessories

AM

loop

antenna

(1)

Remote

(1)

Sony

SUM-3

(NS)

batteries

(2)

FM

lead

antenna

(1)

General

Power

requirement

" 1

Power

Destination

Power

requirements

consumption

US,

Canadian

model_|

120V

AC,

S0Hz

60W

‘Australian

model

220

—

240V

AC,

S0Hz

120W

AEP,

German,

Italian,

5

East

European

model

220

—

230V

AC,

50/60Hz

60W

UK

model

240V

AC,

50Hz

6ow

E,

Saudi

Arabia,

Hong

Kong,

Tourist

,

110

—

120V/220V

—

240V

Malaysia,

Mexican,

|

AC,

50/60Hz

Adjustable

120W

Singapore,

Argentine

|

with

the

Voltage

Selector

model

Dimensions

—

Approx.

280

x

325

x

335

mm

(w/h/d)

incl.

projecting

parts

and

controls

Mass

Approx.

8

kg

Design

and

specifications

are

subject

to

change

without

notice.

SAFETY

CHECK-OUT

After

correcting

the

original

service

problem,

perform

the

following

safety

check

before

releasing

the

set

to

the

customer:

Check

the

antenna

terminals,

metal

trim,

“metallized”

knobs,

screws,

and

all

other

exposed

metal

parts

for

AC

leakage,

Check

leakage

as

described

below.

LEAKAGE

TEST

The

AC

leakage

from

any

exposed

metal

part

to

earth

ground

and

from

all

exposed

metal

parts

to

any

exposed

metal

part

having

a

return

to

chassis,

must

not

exceed

0.5mA

(S00

microampers).

Leakage

current

can

be

measured

by

any

one

of

three

methods.

1.

A

commercial

leakage

tester,

such

as

the

Simpson

229

or

RCA

WT-540A.

Follow

the

manufacturers’

instructions

to

use

these

instru-

ments.

2.

A

battery-operated

AC

milliammeter.

The

Data

Precision

245

digital

multimeter

is

suitable

for

this

job.

3.

Measuring

the

voltage

drop

across

a

resistor

by

means

of

a

VOM

or

battery-operated

AC

volt-

meter.

The

“limit”

indication

is

0.75V,

so

analog

meters

must

have

an

accurate

low-

voltage

scale.

The

Simpson

250

and

Sanwa

SH-63Trd

are

examples

of

a

passive

VOM

that

is

suitable.

Nearly

all

battery

operated

digital

multimeters

that

have

a

2V

AC

range

are

suitable.

(See

Fig.

A)

To

Exposed

Metal

Parts

on

Set

ac

0.15

uF

1.542

|_L£

|

voltmeter

(0.75

V)

=

Earth

Ground

Fig.

A.

Using

an

AC

voltmeter

to

check

AC

leakage.

SAFETY-RELATED

COMPONENT

WARNING!!

COMPONENTS

IDENTIFIED

BY

MARK

/\

OR

DOTTED

LINE

WITH

MARK

A\

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

PUB-

LISHED

BY

SONY,

ATTENTION

AU

COMPOSANT

AYANT

RAPPORT

A

LA

SECURITE!

LES

COMPOSANTS

IDENTIFIES

PAR UNE

MARQUE

/\,

SUR

LES

DIAGRAMMES

SCHEMATIQUES

ET

LA

LISTE

DES

PIECES

SONT

CRITIQUES

POUR

LA

SECURITE

DE

FONCTIONNEMENT.

NE

REMPLACER

CES

COM-

POSANTS

QUE

PAR DES

PIECES

SONY

DONT

LES

NUMEROS

SONT

DONNES

DANS

CE

MANUEL

OU

DANS

LES

SUPPLEMENTS

PUBLIES

PAR

SONY.

MODEL

IDENTIFICATION

TABLE

OF

CONTENTS

~

BACK

PANEL

—

Section

Title

Page

Specifications

(|

1

2.

GENERAL

Index

to

Parts

and

Controls-+-

SERVICING

NOTES

88

3.

DISASSEMBLY

3-1.

CD

Mechanism

Removal:

3-2.

Front

Panel

Removal:

3-3.

TC

Mechanism

Removal

-

4,

ADJUSTMENTS

4-1.

Mechanical

Adjustments

-

4-2,

Electrical

Adjustments~

5.

EXPLANATION

OF

IC

TERMINALS

---

4-972-055-0(]:

AEP

(AE1)

model

4-972-055-2(]:

Italian

model

4-972-055-3():

German

model

6.

DIAGRAMS

4-972-055-40:

UK

(UK2)

model

6-1.

Block

Diagram

—

CD

Section

—

4-972-055-5(]:

East

European

model

6-2,

Block

Diagram

—

Main

Section

—

eee

oe

ue

east

6-3.

Circuit

Board

Location

+

4-972-055-7():

Canadian

model

4-972-058-8(]:

AEP

(AE2)

model

6-4,

Printed

Wiring

Boards

—

Main

Section

~

4-972-055-90):

UK

(UK1)

model

6-5.

Schematic

Diagram

—

Main

Section

—

4-972-056-0(7:

E,

Argentine,

Tourist

model

6-6,

Schematic

Diagram

—

Panel

Section

—

4-972-056-1(]:

Saudi

Arabia

model

6-7.

Printed

Wiring

Boards

—

Panel

Section

4-972-056-2(]):

Australian

model

6-8.

Printed

Wiring

Boards

—

BD

Section

4-972-056-3(]:

Malaysia

model

4.972.056-40]:

Singapore

model

6-9.

Schematic

Diagram

—

BD

Section

—

4-972-056-5(]:

Hong

Kong

model

6-10.

IC

Block

Diagrams

4-972-056-6[_]:

Mexican

model

7.

EXPLODED

VIEWS

7-1.

Chassis

Section--

7-2,

Front

Panel

Section:

7-3.

Mechanism

Deck

Section-

7-4,

Mechanism

Deck

Section-:

7-5.

Mechanism

Deck

Section-

7-6.

CD

Mechanism

Section:

This

appliance

is

classified

as

a

7-7,

Base

Unit

Section:

CLASS

1

LASER

PRODUCT

CLASS

1

LASER

product.

The

CLASS

1

LASER

LUOKAN

1

LASERLAITE

i

KLASS

1

LASERAPPARAT

PRODUCT

MARKING

is

located

on

the

rear

exterior.

Laser

component

in

this

product

is

capable

of

emitting

radiation

exceeding

the

limit

for

Class

1.

8.

ELECTRICAL

PARTS

LIST

-

This

caution

CAUTION.

Russe

usemnananon

wen

Oren

label

is

located

T"USYNUG

LASERSTARUNG

VED

ABNING

NAA

i

ADVARSEL

|

SiocenhcoSaFanvOERE

ER

LOE

AF

FUNKTION

inside

the

unit.

UnOGA

ude

AETTELSE

FO}

VARO!

7

AVATTAESSA

JA

SUQUALUKITUS

OHITETTAESSA

WARNING;

USERSTRAUNG

Nan

DchNa

DEL

AR

OPPNAD

OCH

SPARREN

AA

URXOPPLAD,

|

USYNUG

LASERSTRALING

NAA

OEKSEL

APnt

ADVARSEL

i

Uhnc

EXSPONEFING

POR

STHALEN

CAUTION

Use

of

controls

or

adjustments

or

performance

of

procedures

other

than

those

specified

herein

may

result

in

hazardous

radiation

exposure.

SECTION

1

SERVICING

NOTES

NOTES

ON

HANDLING

THE

OPTICAL

PICK-UP

BLOCK

OR

BASE

UNIT

The

laser

diode

in

the

optical

pick-up

block

may

suffer

electrostatic

breakdown

because

of

the

potential

difference

generated

by

the

charged

electrostatic

load,

etc.

on

clothing

and

the

human

body.

During

repair,

pay

attention

to

electrostatic

breakdown

and

also

use

the

procedure

in

the

printed

matter

which

is

included

in

the

repair

parts.

The

flexible

board

is

easily

damaged

and

should

be

handled

with

care.

NOTES

ON

LASER

DIODE

EMISSION

CHECK

The

laser

beam

on

this

model

is

concentrated

so

as

to

be

focused

on

the

disc

reflective

surface

by

the

objective

lens

in

the

optical

pick-up

block.

Therefore,

when

checking

the

laser

diode

emission,

observe

more

than

25cm

away

form

the

objective

lens.

CHUCK

PLATE

JIG

ON

REPAIRING

On

repairing

CD

section,

playing

a

disc

without

the

CD

lid,

use

Chuck

Plate

Jig.

©

Code

number

of

Chuck

Plate

Jig

:

X-4918-255-1

——

ort

28S

SECTION

2

-

Thi

ti

tracted

from

GENeEnOS

patunlon

marae

gs

ET

SRS

Index

to

Parts

and

ee

Controls

Tuner/Ampiifier

Refer

to

the

pages

indicated

in

parentheses

for

how

to

use

the

controls.

Controls

with

an

asterisk

have

indicators

on

themselves.

Front

Panel

DISPLAY

button

Preset

equalizer

setting

buttons*

KARAOKE

PON/MPX

button

1]

SYSTEM

POWER

ON/STAND

BY

switch

(2)cD

tray

&

OPEN

/

CLOSE

button

M

(stop)

button

5]

Dil

(play

and

pause)

button

[6]

CD

operating

buttons

CONTINUE

button

SHUFFLE

button

PROGRAM

button

DBFB

button

VOLUME

control

CLOCK

SET

button

FUNCTION

button

PHONES

jack

MIX MIC

jack

Tuner

operating

buttons

TUNING

MODE

button

MONO

button

fi]

ENTER/NEXT

button

[f

TUNER

MEMORY

button

[13]

-144/>>4

+

buttons

14

TUNER/BAND

button

BeBseeseNe

Function

indication

CD

play

mode

indications

Music

calendar

DBEB

indication

AUTO/TUNING/PRESET/STEP

indications

Frequency

/time

indication

Tuner/Karaoke

indications

VOLUME

indication

Tape

player

Cvs

|coiosres

isis

Remote

(RM-S22)

1

2

3

7]

DOLBY

NR

button*

3

[2]

Tape

compartments

[3]

Tape

operating

buttons

4

5

=

=

&

(play)

>>

(fast

rightward)

5

“4

(fast

leftward)

WA

(stop

play/eject)

@

(recording)(for

deck

B

only)

ik

IN

(pause)

(12)

Rear

panel

AEP,

G,

IT,

BE,

EXCEPT

AEP,

G,

IT,

UK

model

EE,

UK

model

6

7]

SLEEP

button

[2]

FUNCTION

button

3]

MD

operating

buttons

_

=

>

(play)

button

E,

EA,

SP,

AR,

H

(pause)

button

—

JE,

HK

model

(stop

play)

button

5

a

CD

operating

buttons

Leese

—

>

(play)

button

1

(pause)

button

3]

(stop

play)

button

H44

/P

>I

(AMS)

buttons

Tove

Cr

ere

mais

(fast

forward

/fast

reverse)

uttons

AEP,

G,

IT,

EE,

UK

model

REPEAT

bullion

T]

FM

75

Q

terminal

:

EDIT

button

EXCEPT

AEP,

G,

IT,EE,

UK

model

CHECK

button

(2)

+

earth

terminals

CLEAR

button

[3}

AM

terminal

5]

Tuner

operating

buttons

[4]

AUX

IN

jacks

BAND

button

[5]

SPEAKER

connectors

PRESET

(+/-)

buttons

[6]

-b

ground

terminal

6]

SYSTEM

POWER

button

7)

VOLTAGE

SELECTOR

:E,

EA,

SP,

AR,

JE,

HK

model

7)

VOL(+/-)

buttons

8]

Power

cord

Display

window

+

Abbreviation

G

:German

a

2)

[3]

4

IT:

Italian

EE

:

East

European

port,

|_|

SIE

EA

:

Saudi

Arabia

St

(PEI

AR

:

Argentine

aa

oat

HK

:

Hong Kong

farsa

||

cok

JE

:

Tourist

SP

:

Singapore

5 6 Z

SECTION

3

DISASSEMBLY

Note

:

Follow

the

disassembly

procedure

in

the

numerical

order

given.

3-1.

CD

MECHANISM

REMOVAL

@

Four

screws

(+BVTP3X8)

CD

Mechanism

Wire

(Flat

type)(21Core)

CN102

@cnz291

(Spin)

©

Loadirig

panel

3-2.

FRONT

PANEL

REMOVAL

@

Two

screws

(+BVTP

3X10)

©

Two

claws

ie

@CN101

(Spin)

Front

Panel

Section

@

Three

claws

@®

€N2001

(6pin)

(DECK

B

)

©

CN604

(4pin)

®

cn603

(2pin)

@

CN602

(6pin)

@ecneot

(2pin)

—~Gn

I

Pei

@

Wire

(Flat

type)(17Core)

@

Two

screws

(+BVTP3X8)

CN105

(17pin)

6s

3-3.

TC

MECHANISM

REMOVAL

@

Six

screws

(+BVTP2.6%6)

@

Eject

button

TC

Mechanism

@

Lid

(8)

assy,

cassette

SECTION

4

ADJUSTMENTS

4-1,

MECHANICAL

ADJUSTMENTS

PRECAUTION

1.

Clean

the

following

parts

with

a

denatured-alcohol-

moistened

swab

:

record/playback

head

pinch

roller

erase

head

rubber

belts

capstan

idlers

2.

Demagnetize

the

record/playback

head

with

a

head

demagnetizer.

3,

Do

not

use

a

magnetized

screwdriver

for the

adjustments.

4,

After

the

adjustments,

apply

suitable

locking

compound

to

the

parts

adjusted.

5.

The

adjustments

should

be

performed

with

the

rated

4-2,

ELECTRICAL

ADJUSTMENTS

DECK

SECTION

1,

The

adjustment

should

be

performed

in

the

publication.

(Be

sure

to

make

playback

adjustment

at

first.)

2.

The

adjustment

and

measurement

should

be

performed

for

both

L-CH

and

R-CH.

©

Switch

position

DOLBY

NR

switch

:

OFF

FUNCTION

button

:

CD

3.

Deck

section

electrical

adjustments

are

made

in

test

mode

by

pressing

TUNER/BAND,

DISPLAY,

and

POPS

at

the

same

time.

4.

Input point

and

output

level

measurement

point.

power

supply

voltage

unless

otherwise

noted.

Output

level

measurement

Input point

point

@

Torque

Measurement

36.7mV

( ~

25.648)

AF

OSC

-

a

are

Mode

|

Torque

Meter

Meter

Reading

lene

ste

30

to

70gcm

measurement

Forward

ora

(0.42

=

0.97

ozsinch)

point

wee

peed

ooclt.

R-CH

Forward

1.5

to

5.5geom

Back

Tension]

CQ-102C

(0.021

—

0.076

ozsinch)

aes

onaoe

9

1

more

than

63gscm

FF,

REW

cO-2018

‘oes

earehy

MAIN

BOARD

1

3

CNéoT

©

Test

Tape

Tape

Contents

Use

P-4-A100

10kHz,

~

10dB

Head

Azimuth

Adjustment

P-4-L300

315Hz,

0dB

Level

Adjustment

WS-48B

3kHz,

Od

Tape

Speed

Adjustment

0

dB=0.775V

DECK

A

Procedure

:

1.

Forward

Playback

mode

Reverse

Playback

mode

test

tape

P-d-A100

(fokHz,

~

1008)

RS

Record/Playback

Head

Azimuth

Adjustment

DECD

B

‘Output

level

measurement

point

2.

Tum

the

adjustment

screw

for

the

maximum

output

levels.If

these

levels

do

not

match,turn

the

adjustment

screw

until

both

of

output

levels

match

together

within

1dB.

LcH

peak

output

level

RCH

peak

Screw

position

—

screw

angie

peak

peak

3.

Playback

Mode

test

tape

Ba.Atoo

(10K,

~

10<8)

L-CH

Oscilloscope

SS

L

nd

R

ics

Pee

>

Te)

F

RecH

Cutout

fevel

measurement

point

(see

page

8)

Scjean

pater

in

phase

90°

135° 1805

good

wrong

4.

Change

the

review

playback

mode

and

repeat

the

steps

1

to

3.

5,

After

the

adjustment,

lock

the

adjustment

screw

with

suitable

locking

compound,

Adjustment

Location

:

—

record/playback

head

(Deck

A

and

Deck

B)

—

adjustment

screws

DECK

Aj

|DECK

B

Tape

Speed

Adjustment

Procedure

:

©

Perform

high

speed

adjustment

before

normal

speed

adjust-

ment.

Mode

:

Playback

fost

tape

(Rie,

G8)

jek

1.

Set

to

FWD

playback

mode.

2.

Adjust

RV670

so

that

the

frequency

counter

reading

becomes

3,000

+

1SHz.

frequency

counter

‘Output

level

measurement

point

(see

page

8)

Frequency

difference

between

the

begining

and

the

end

of

the

tape

should

be

within

+

3%.

Adjustment

Location

:

MAIN

board.

(see

page

10)

DECK

B

DECKA

Playback

Level

Adjustment

Procedure

:

Mode

:

Playback

test

tape

P-4-1300

(315Hz,

008)

vive

set

“Ss

‘Output

level

measurement

point

(See

page

8)

Deck

A

is

RV601(L-CH)

and

RV651(R-CH),

deck

B

is

RV602

(L-CH)

and

RV652

(R-CH)

so

that

adjustment

within

adjustment

level

as

follows.

Adjustment

Level

:

LINE

OUT

level

:

—

7.5

+

0.5dB

(0.31

to

0.35V)

Level

Difference

between

Channels

:

within

0.5dB

Confirm

the

DOLBY

OUT

level

does

not

change

in

playback

mode

while

changing

the

mode

from

playback

to

stop

several

times.

Adjustment

Location

:

MAIN

board.

(see

page

10)