Akai GX-636 Manual de usuario

AKAI-00107

SERVICE

MANUAL

THIS

MANUAL

MUST

USED

SET

TOGETHER

WITH

SEPARATELY

PUBLISHED

GX-635D

SERVICE

MANUAL

AND

PARTS

LIST.

STEREO

TAPE

DECK

MODEL

GX-636

AKAI-00351

SERVICE

MANUAL

PARTS

LIST

STEREO

TAPE

DECK

MODEL

GX-

SECTION

SERVICE

MANUAL....................

0000005

SECTION:

PARTS

(LIST

occis

sete

ic5

aus

Seay

casein

tele

way

SECTION

SCHEMATIC

DIAGRAM.................0

200005

VI.

VIL.

Vill.

SECTION

SERVICE

MANUAL

TABLE

CONTENTS

TECHNICAL.

DATA}.

o.45

e685

eke

tee

DISMANTLING

UNIT...

2.0...

eee

CONTROLS

53-23.

ore

iid

BES

lara

tte

SSS

PRINCIPAL

PARTS

LOCATION

..........

cece

eee

CIRCUIT

OPERATING

PRINCIPLES

.......

0.0...

eee

eens

SYSTEM

CONTROL

OPERATION

0.0...

eee

ees

THE

SAMPLE

AND

HOLD

SYSTEM

SERVO

MOTOR

(SCM-200)

OPERATION

.......

MECHANISM

ADJUSTMENT...

1...

0...

eee

tte

GUIDE

ROLLER

LOOSE

PLAY

ADJUSTMENT..........---2+--,

TENSION

MICRO

SWITCH

POSITION

ADJUSTMENT

.............

ROLLER

BLOCK

HEIGHT

ADJUSTMENT

...........-.-.204

ee,

REEL

TABLE

HEIGHT

ADJUSTMENT...

.........--0

02s

eee

CAPSTAN

SHAFT

LOOSE

PLAY

ADJUSTMENT......-.---..005-

BRAKE

BAND

POSITION

ADJUSTMENT

AND

BRAKE

TENSION

ADJUSTMENT

......

PINCH

ROLLER

POSITION

ADJUSTMENT

..........2--5-55005

PAUSE

PLUNGER

POSITION

ADJUSTMENT

..........---5---5-

PINCH

ROLLER

PRESSURE

ADJUSTMENT...

........--005

00055

10.

TAPE

SPEED

ADJUSTMENT.

...

2.0.2.

eee

ees

HEAD

ADJUSTMENT

..........

0002

eet

AMPLIFIER

ADJUSTMENT

.......

2.0.2

ees

RESISTANCE

VARIOUS

COILS

...

1...

2.0...

eee

ees

CLASSIFICATION

VARIOUS

P.C

BOARDS..........-..-.+--55:

P.C

BOARD

TITLES

AND

IDENTIFICATION

NUMBERS

...........

COMPOSITION

VARIOUS

P.C

BOARDS

.........-----20506-

For

basic

adjustments,

measuring

methods,

and

operating

principles,

refer

GENERAL

TECHNICAL

MANUAL.

TECHNICAL

DATA

TRACK

SYSTEM

track

channel

stereo/monaural

system

REEL

CAPACITY

10-1/2”

reel

TAPE

SPEED

cm/s

+0.8%

(7-1/2

ips)

9.5

cm/s

+1.0%

(3-3/4

ips)

(Pitch

control:

than

+6%)

WOW

FLUTTER

Less

than

0.03%

WRMS

cm/s

Less

than

0.04%

WRMS

9.5

cm/s

Less

than

0.08%

DIN

45500

cm/s

Less

than

0.10%

DIN

45500

9.5

cm/s

FREQUENCY

RESPONSE

27,000

cm/s

using

Tape

21,000

9.5

cm/s

using

Tape

25,000

cm/s

using

Tape

19,000

9.5

cm/s

using

Tape

DISTORTION

(1,000

“0”

VU)

Less

than

0.5%

cm/s

SIGNAL

NOISE

RATIO

Better

than

DIN

45500

ERASE

RATIO

Better

than

(at

1,000

Hz)

CROSS

TALK

Better

than

(at

1,000

Hz)

CHANNEL

SEPARATION

Better

than

(at

1,000

Hz)

BIAS

FREQUENCY

100

kHz

HEADS

(6):

Two

Recording

Heads,

Two

Playback

Heads,

Two

Erase

Heads

MOTORS

(3):

One

Servo

Motor

for

Capstan

Drive

Two

Eddy

Current

Motors

for

Reel

Drive

REAL

TIME

COUNTER

RWD

TIME

OUTPUT

JACKS

min

sec,

Less

than

+1.5%

120

sec

using

550m

(1,800

ft.)

Tape

Line

(2):

0.775V

VU)

Required

load

impedance:

than

kohms

Phone

(1):

100

mV/8

ohms

STE

c=nn

nuttin

INPUT

JACKS

DIN

JACK

DIMENSIONS

WEIGHT

POWER

REQUIREMENT

Microphone

(2):

0.25

Required

microphone

impedance:

600

ohms

LINE

(2):

impedance

100

kohms

Input

2.0

mV,

impedance

kohms,

Output

0.3V

440(W)

483(H)

256(D)

mm,

(17.4

19.0

10.1")

(46.4

Ibs)

100V,

50/60

for

JPN

120V,

for

Canada

220/240V,

for

Europe,

and

Australia

110/120/220/240V,

50/60

internally

switchable

for

other

countries

Specifications

determined

with

Akai

LN-150-7

SCOTCH

#211

tape

unless

otherwise

noted.

For

improvement

purposes,

specifications

and

design

are

subject

change

without

notice.

ll.

DISMANTLING

UNIT

case

trouble,

etc.

necessitating

dismantling,

please

dismantle

the

order

shown

the

photographs.

Reassemble

reverse

order.

SIDE

BOARD

FOOT

}OTTOM

SCREWS

PLATE

SCREWS

————

SIDE

BOARD

birac

soa

SCREWS

—

PINCH

ROLLER

SCREWS

HEAD

COVER

BASE

MECHA

PANEL

BLOCK

AMP

PANEL

BLOCK

SCREWS

CONTROLS

arent

Saat

Bie

PARBN

PITCH

CONTROL

SUPPLY

REEL

TABLE

BUILT-IN

REEL

RETAINER

(Left)

LEFT

TENSION

ARM

PINCH

ROLLER

RECORDING

MUTE

SWITCH

(REC

MUTE)/TIMING

LAMP

REEL

SIZE

SELECTOR

REVERSE

SELECTOR

POWER

SWITCH

METER

(Right)

METER

(Left)

TAPE

SELECTOR

TAPE

SPEED

SELECTOR

TIMER

START

HEADPHONE

JACK

OUTPUT

LEVEL

CONTROL

17.

18.

19.

20.

21.

22.

23.

24,

25.

26.

27.

28.

29.

30.

31.

32.

Fig.

Controls

MONITOR

SWITCH

REAL

TIME

COUNTER

and

RESET

BUTTON

TAKE-UP

REEL

TABLE

BUILT-IN

REEL

RETAINER

(Right)

RIGHT

TENSION

ARM

HEAD

COVER

RECORDING

INDICATOR

LAMP

PAUSE

INDICATOR

LAMP

REVERSE

DIRECTION/STAND

INDICATOR

LAMP

FORWARD

DIRECTION/STAND

INDICATO2

LAMP

MODE

BUTTONS

MICROPHONE

INPUT

CONTROLS

MEMORY

MARKERS

LINE

INPUT

CONTROLS

MICROPHONE

JACKS

(Left/Right)

RECORDING

MODE

SWITCH

IV.

PRINCIPAL

PARTS

LOCATION

BRAKE

MICRO

SWITCH

sws06

BRAKE

PLUNGER

SL903

PINCH

ROLLER

PLUNGER

SL902

PITCH

CONTROL

VOLUME

VR9OI

PAUSE

PLUNGER

SL904

REAL

TIME

COUNTER

TENSION

ARM

(L)

TENSION

ARM

(R)

REC

MUTE

SWITCH

SW904

HEAD

BLOCK

REEL

SIZE

SWITCH

SW903

REVERSE

SELECTOR

SWITCH

POWER

SWITCH

Sw90i

OPERATION

BLOCK

REC

MODE

INDICATOR

METER

MIC

REC

LEVEL

LINE

VOLUME

PHONES

JACK

REC

MODE

SWITCH

MIC

JACK

OUTPUT

LEVEL

CONTROL

VOLUME

TAPE

SELECTOR

SWITCH

MONITOR

SWITCH

TAPE

SPEED

SWITCH

TIMER

START

SWITCH

Fig.2

Front

View

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