Akai PR-A06 Manual de usuario

S0M-VvVd

90V-dd

STEREO

PRE-AMPLIFIER

mope.t

PR-AQ6

STEREO

POWER

AMPLIFIER

movi.

PA=WO6

TABLE

CONTENTS

SECTION

MODEL

PR-AO6........

SECTION

MODEL

PA-W06........

SECTION

PARTS

LIST...........

SECTION

SCHEMATIC

DIAGRAM

PR-AO6

PA-WO06

SECTION

STEREO

PRE-AMPLIFIER

MODEL

PR-A06

ALSO

APPLICABLE

BLACK

PANEL

MODEL

TABLE

CONTENTS

TECHNICAL

DATA...

cee

eet

tenes

Il.

DISMANTLING

UNIT

.....

0...

ccc

eee

CONTROLS

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

pad

seca

Cater

alone

eis

rierer

sia,

Beara

sees

ake aie

IV.

PRINCIPAL

PARTS

LOCATION

.......

0.0...

eee

eens

VOLTAGE

CONVERSION

........

0...

cee

etree

VIL

-ADJUSTMENTD

shoe

beeen

sna

sce

braves

ee ws

Vil.

CLASSIFICATION

VARIOUS

P.C

BOARDS

.................06.

P.C

BOARD

TITLES

AND

IDENTIFICATION

NUMBERS...........

COMPOSITION

VARIOUS

P.C

BOARDS

.................-.-.

For

basic

adjustments,

measuring

methods,

and

operating

principles,

refer

GENERAL

TECHNICAL

MANUAL.

lI.

TECHNICAL

DATA

INPUT

SENSITIVITY/IMPEDANCE/SIGNAL

NOISE

RATIO

(IHF

“A”)

PHONO

TUNER

AUX

TAPE

PLAY

1/2

OUTPUT

LEVEL/IMPEDANCE

TAPE

REC

1/2

OUTPUT

RATED

LOAD

IMPEDANCE

PHONO

MAX.

INPUT

LEVEL

kHz)

PHONO

1/2

FREQUENCY

RESPONSE

TUNER/AUX/TAPE

PLAY

1/2

PHONO

1/2

(RIAA

curve

deviation)

TOTAL

HARMONIC

DISTORTION

(20

kHz)

TUNER/AUX/TAPE

PLAY

1/2

(Volume

Max.)

PHONO

1/2

(Volume

Max.)

TONE

CONTROL

BASS

TREBLE

SUBSONIC

FILTER

CHANNEL

SEPARATION

(AUX)

SEMICONDUCTORS

POWER

REQUIREMENTS

POWER

CONSUMPTION

DIMENSIONS

WEIGHT

MM:

mV/33

47k,

100

kohms/82

MC:

0.08

mV/10

ohms/75

MM:

mV/47

kohms/82

150

mV/47

kohms/102

150

mV/47

kohms/102

150

mV/47

kohms/102

150

mV/600

ohms

V/600

ohms

kohms

400

(MM)

100

kHz

0.5

kHz

0.2

0.005%

output

0.005%

output

100

kHz

dB/oct.

(shorted

circuit)

Transistors

29,

Diodes

48,

FETs

ICs

120

for

USA

and

Canada

220

for

Europe

except

240

for

and

Australia

110/220/240

50/60

internally

switchable

for

other

countries

U/T,

AAL,

CSA

Models:

440

(W)

(H)

313

(D)

(17.3

3.1

12.3

inches)

6.3

(13.9

Ibs)

For

improvement

purposes,

specifications

and

design

are

subject

change

without

notice.

DISMANTLING

UNIT

case

trouble,

etc.

necessitating

dismantling,

please

dismantle

the

order

shown

the

photographs.

Reassemble

reverse

order.

—me

1HU...

SCREWS

Sap

SCREWS

FRONT

PANEL

UPPER

COVER

AARWN

CONTROLS

POWER

SWITCH

BASS

CONTROL

TREBLE

CONTROL

FILTER

SWITCHES

MODE

SELECTOR

LOUDNESS

SWITCH

AND

!NDICATOR

LED

VOLUME

INDICATOR

VOLUME

CONTROL

REMOTE

CONTROL

INDICATOR

INPUT

SELECTOR

INDICATOR

INPUT

SELECTOR

PHONO

SELECTOR

REC

(Recording)

SELECTOR

STEREO

BALANCE

CONTROL

15.

17.

18.

20.

21.

22.

23.

24.

25.

26.

27.

S2FUAL

NUMBER

COU.

‘SHOCK

AATARE

NOT

EFER/

RISOBE

CROC

PAS

CMREVER

SERURAORSSEEFARR-—“HICST

GFFMEN

CARTIBW:

coe

use

ourside

indicated

service

power

source

arse,

conmét’our

Shop

for

necessary

conversion.

200W

MAX.

Tova,

TOOW

MAX

110-2400

80/60Hz

20W

Fig.

Controls

CAPACITANCE

CONTROL

GROUND

TERMINALS

TUNER

JACKS

AUX

JACKS

TAPE

SYSTEM

REC/PLAY

JACKS

REMOTE

CONTROL

JACK

TAPE

SYSTEM

REC/PLAY

JACKS

OUTPUT

JACKS

OUTLETS

(Some

models

are

not

equipped

with

this

facility.]

CORD

(Some

models

are

equipped

with

Inlet

instead

cord.

Connect

with

appropriate

power

cord.)

TAPE

SYSTEM

DIN

JACK

(Some

models

not

have

this

facility’-)

PHONO

INPUT

JACKS

PHONO

INPUT

JACKS

IV.

PRINCIPAL

PARTS

LOCATION

MODE

SWITCH

Swi

TREBLE

CONTROL

LED

BOARD(A)

VRI

PRA-6O00IC

SUBSONIC

HIGH

VOLUME

DOWN

SWITCH

Ssw3

sw4

SWITCH

P,C

BOARD

Sw2

PRA-6025

FILTER

BASS

CONTROL

SWITCHES

LOUDNESS

VOLUME

VR2

SWITCH

sw2

swt

FUSE

POWER

PRE

AMP

P.C

BOARD

TRANSFORMER

P.C

BOARD

PRA-6022(U/T)

T90I

PRA-6001A

POWER

SWITCH

Sws0i

eecticeaialiny

{

Scie

TONE

CONTROL

P.C

BOARD

PRA-4002A

LED

VOLUME

INDICATOR

DSO

REMOTE

LAMP

P.C

BOARD

PRA-6026

FETYETIVTVIFITTTY,

VOLUME

BLOCK

(VR2-ito5,SW4-1,2)

REC

SELECTOR

SWITCH

sw3

swi

LED

P.C

BOARD(B)

PRA-4002B

PHONO

SELECTOR

SWITCH

Swi

INPUT

SELECTOR

SWITCH

Fig.

Front

View

INPUT

SELECTOR

P.C

BOARD

PRA-6001B

Fig.3

Top

View

VOLTAGE

CONVERSION

SCREW

POWER

SWITCH

oce

REAR

Fig.4

Voltage

Conversion

(U/T

Model)

U/T

MODEL

(Refer

Fig.

Switch

off

the

power

supply

and

remove

the

plug

from

the

mains

supply.

Loosen

holding

screws

and

remove

the

top

panel.

Remove

the

screw

holding

the

Fuse

P.C

Board

located

near

the

power

transformer.

Remove

existing

Line

Voltage

Fuse

and

insert

required

Line

Voltage

Fuse

the

proper

fuse

holder.

110V

800mA

250V

220V

400

250V

240V

400

250V

MODEL

OTHER

THAN

U/T

voltage

conversion.

Scere

enn

sneererverevaiienreeeset

Vi.

ADJUSTMENT

CENTER

OFF-SET

VOLTMETER

VOLTAGE

PRE

AMP

P,C

BOARD

PRA-600IA

Fig.

Pre

Amp

P.C

Board/Instrument

Connection

CENTER

OFF-SET

VOLTAGE

ADJUSTMENT

(Refer

Fig.

Connect

the

Digital

Voltmeter

between

the

test

points

the

Pre

Amp

P.C

Board

PRA-6001A

and

the

ground.

Adjust

VR1

(L-ch),

VR1b

(R-ch)

kB,

that

the

volt-

meter

reads

0.5V.

Vi.

CLASSIFICATION

VARIOUS

P.C

BOARDS

P.C

BOARD

TITLES

AND

IDENTIFICATION

NUMBERS

P.C

Board

Title

Board

Number

Pre

Amp

P.C

Board

PRA-001A

Input

Selector

P.C

Board

LED

P.C

Board

(A)

Fuse

P.C

Board

(E)

(CSA,

AAL)

Switch

P.C

Board

PRA6025

Tone

Control

P.C

Board

PRA-4002A

LED

P.C

Board

(B)

Balance

P.C

Board

PRA-4042

Chart-1

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