Pioneer SA-506 Manuale utente

-_|,

STEREO

AMPLIFIER

siAI5cIEi

C)rqoNEEru

siA-Eio6/s, s/e

2.4 INPUT

ASSEMBLY

(GWX-208)

,-(

Parts

List

Part

No. Symbol & Description

jack

r raPE

PLAY REC TUNIR AUX PHONO E

Eurooe or Oceania

model

22OV and24OV (Switchable)

OV.

12OV,

22OV

and

240V(Switchable)

110V, 12OV,22OV and

240V (Switchable) U.S.

Militarv model

MODEL

5A.506

COMES

IN THREE

VERSIONS

DISTINGUISHED

AS FOLLOWS:

SA-506/HG.

For servicing

of the other typesplease

o This

referservice

to the manual

is aPPlicable

to the

additional

service

manuals.

7.5 Volume

Control

Assembly

(GWX-203)

' ' ' ' 17

7.6 AF

AmplifierAssembly

(GWK-120)

.' . . . . 18

7.7 InputAssembly

(GWX-204)

. ... 21

7.8 Headphone

Assemblv

(GWX-202) 21

7.9 FuseAssembly(GWX-205)

.... 21

'a"l

8. EXPLODED

VIEWS

8.1 External

Part

8.2 Internal

Part

9. Packing

Additional

Service

Manual

CONTRAST

MISCELLANEOUS

PARTS

. .

SCHEMATIC

DIAGRAMS,

P.C.BOARD

PATTERNS

AND PARTSLIST

2.1 Schematic

Diagram 29

2.2 AFAmplifierAssembly

(GWK-121)

. ..... 31

2.3 MeterandSpeaker

Assembly

(GWS-147)

. . . 36

2.4 InputAssemblv(GWX-2081

........... 37

't1

CONTENTS

FRONT

PANEL

FACILITIES

SPECIFICATIONS

BLOCK

DIAGRAM

DISASSEMBLY

PARTS

LOCATION

5.1 Front

Panel

View .

5.2 Rear

Panel

View .

5.3 Front

View

withPanel

Removed

5.4 ToP

View

6. ADJUSTMENTS

7. SCHEMATIC

DIAGRAMS,

P.C.BOARD

PATTERNS

AND

PARTS

LIST

7.1 Miscellanea

7.2 Schematic

Diagram

7.3 P.C.

Board

Connection

Diagram

7.4 Meterandspeaker

Assembly

(GWS-146)

' ' '

2. SPECIFICATIONS

Semiconductors

Transistors ........ 20

Diodes. ....22

Amplifier

Section

Continuous

Power

Output

0f 25

watts*

per

channel,min.,at 8

ohms

from20

Hertzto

20,000

Hertzwithn0

morethan0.08

% tolal

harmonicdistortion.

ContinuousPower

Output

at 1 kHz

(both

channel

driven)

T.H.D.O.08o/s,8

ohms. . . . 28

watts

per

channel

Total HarmonicDistortion

(20 Hertzto 20,000Hertz,8

ohms)

continuousrated

power

output.

I3 watts

per

channel

power

output,8

ohms

. . . . Nomore

than

0.04%

1watt

per

channel

power

output,8

ohms . . . Nomorethan

0.03%

fntermodulationDistortion

(50

Hertz

:7,000Hertz

continuousrated

power

output.

13watts

per

channel

poweroutput,8ohms

. . . .

I watt

per

channel

power

output,

8ohms

Output

Speaker

Headphones

DampingFactor

(20

Hertz

to 20,000Hertz,

8 ohms)

nput

(Sensitivity/l

mpedance)

PHONO. . 2.5mY

150

kilohms

TUNER. 150

mV/50

kilohms

AUX.. ..150mV/50kilohms

TAPEPLAY. .... 150mV/50kilohms

TAPEPLAY

(DlN

connector)

SA-506/HGmodelonly

. . . 150mV/50

kilohms

PhonoOverload

Level

(T.H.D.

O.1%,lkïzl

PHONO. 140

Output

(Level/l

mpedance)

TAPEREC. .....150mV

TAPE

REC

(DlN

connector)

model

only

mV/80kilohms

FrequencyResponse

PHONO

(

RIAA Equalization)

30Hzto ,l5,000H2

+0.5d8

TUNER,

AUX,

TAPE

PLAY

. . . . . 20Hzto40,000H2

+2dB

Tone

Control

BASS. .. +12d8,-10d8(100H2)

TREBLE +10d8,

-10d8

(10kHz)

Loudness

Contour

(Volume

control

setat-4OdB

position) +6dB(t

OOHzI

Humand

Noise

(lHF,short-circuited,

A network)

PHONO. . 76dB

TUNER,AUX,TAPE

PLAY

..... 92dB

Humand

Noise

(DlN:

Continuous

power/50

mW)

PHONO . . 66dB/58d8

TUNER,AUX,

TAPEPLAY 83d8/60d8

Miscellaneous

PowerRequirements

sA-s06/s,s/G...

sA-s06/HG

PowerConsumption

SA-506/HG.....

sA-s06/s,s/G...

Dimensions

110112012201240V

(switchable),

50/60H2

220

240

(swi

tchable),

50/60H2

240W

(max.)

78W

420(w)x1a7(H)x261(Dl

6-1

/2(w)xs-3/a(H

10-l

/a(D)in

Nomorethan0.08%

Nomorethan

0.05%

morethan

0.03%

A,B,

A+B

Lowimpedance

:1)

Weight Without

package

. . 5.9kg

(131b)

With

package

. .. . 6.9kg

(151b

3oz)

Furnished

Parts

Fuse2A

(5A-506/5,

S/G

model

only)

Fuse1.2A

(5A-506/5,

S/G

model

only)

.......1

Operating

instructions

. . . . . . I

*Measured pursuant to Federal

Trade Regulation rule on Power

Amplifier.

Tlade

Output Claims

NOTE:

Specifications

and thedesign

subjectto possible

tion without noticedue

to improvements.

137

3. BLOCK DIAGRAM

35.6dB -l

ol lkHz I|<_ -o7sd8

I voL!

Ful,rcroN

lf*t "l ll

PHONO

TUNER

AUX

TAPE

L PLAY

Reflective

tape

Meter cover tape

IO POI{ER

STAGÊ

4. DISASSEMBLY

REMOVE

BONNET(Fis.2)

Remove the two mounting screw at the left and

right sidesof the bonnet and remove the bonnet.

REMOVE

FRONT

pANEL(Fig.

Pull off all knobs (except push buttons). Then

removeshaft nuts of FUNCTION and BASS.

Take out upper left and right screws

(2 screws)

front panel and remove.

REMOVE BOTTOMPLATE(Fig.

Take out 4 screws shown in figure and pull

rearward to remove.

METER LAMP REPLACEMENT(Fig.

1. Remove the front panel.

2. Pull the meter from the body (the meter and

panel stay are attached with double sided

adhesive

tape through sponge).

3. Peeloff the meter cover tape.

4. Peel off the reflective tape around the outside

of the meter.

5. Remove the meter lamp, usinga solderingiron.

6. Install the new lamp in the reverseorder to

removal. Fig.

1 Meter

lamp

replacement

sA-5c'6

to read out the rated

nominalimpedance

amplifier's

SPEAKERS

ance of the speak-

thefrequency.

In order

connect an 9-ohm

Iand

the

treble

with

treblearestrength'

rned to the right and

the

left.

source

depends

on how

in thelistening

room

thespeakers.

You can

accordinglY

andadiust

VOLUMECONTROL

Usethiscontrolto adjust

theoutputlevelto thespeakers

andheadphones.Turn it clockwise

to increasetheoutput

level.

soundwillbeheard

if you

set

it to "0".

TAPEMONITORSWITCH

Depressthisbuttonwith a tapedeckwhich

connected

to theTAPEjacks

(REC

and

PLAY)when

you wantto

monitortheplayback

or recordingof a tape.

NOTE:

Releasethis button (OFF position)

whenlistening

to a

recordor a broadcast.

FUNCTION

SELECTOR

SWITCH

Set this switchto selectthe program

source.

Turn the

VOLUMEcontrol

down firstbeforeselecting

a different

position while the sound from one program

source

being

reproduced.

TUNER: When listening

to AM broadcasting

or FM

broadcasting.

PHONO: When

playing

a record

on theturntable

con-

nected

to the

PHONO

jacks.

AUX: When

listening

to an audiocomponent

con-

nected

to the

AUXjacks.

LOUDNESS

SWITCH

Depress

this

button(ON

position)

whenlistening

atalow

volume.

The frequency

reiponse

of the human

ear

varies

according

to thelistening

volume,

and

setting

thisswitch

to the ON position

compensates

for hearing

response

emphasizing

thebass.

BALANCE

CONTROL

Use

this controlto balance

the volume

of the left and

right channels.

First,however,

tune

in to theAM broad-

çast,

and

adjust

sothat the sound

appears

to comefrom

somewhere

exactly betweenthe two speakers'

lf the

sound

appears

to belouder

ontheright,

it means

that

the

volume

of the

rightchannel

higher.

Turn

the

BALANCE

control to the left and adiust.

Conversely,

if the sound

appearsto be louder on the left, it means

that the

volumeof the left channel

ishigher'

Therefore,

turn the

BALANCE

control

to the

right

and

adjust'

1. FRONT PANEL FACILITIES

POWER

INDICATOR

When

thePOWER

switch

isset1o

ON,

thislamp

lights

up,

indicating

theamplifier

turned

on.

SPEAKER

SELECTOR

SWITCHES

Depress

the button corresponding

to the speakers

con-

nected

to theSPEAKERS

terminals

(A or B)on therear

panel.

You candepress

both of these

buttons

to listento

sound

from two Pairs

of systems

atthesame

time.

POWER

SWITCH

Flipthis

switch

to theONposition

tosupply

power

to the

stereoamplifier.

HEADPHONES

JACK

(PHONES

Plug

the headphones

into this jack when you wantto

listen

through

your

stereoheadphones.

Release

bothSPEAKERS

buttonsif youwantto listen

the sound

through

your headphones

only (Thismeans

that

both

buttons

will bereleased).

POWER

METERS

These

power

meters

allow

power level

when speakers

with

8ohms are connected to the

terminals.

These ualuesare related to the

ers and they uary according

to find out the exact outPut

dummy load insteadof the

BASS,

TREBLE

CONTROLS

Adiustthe

basswiththe

BASS

the TREBLE control.

The bass

ened when the controls

are

weakened

when

theyare

turned

Thesound

qualityof the music

the sound

isabsorbed

and

and also

on the characteristics

use

these

controlsto

thesound

to your preference.

6. ADJUSTMENTS

IDLE CURRENT

ADJUSTMENT

1. Set the VOLUME controls to the minimum

position, and set the SpEAKER switch to the

"4" position.

2. Connect an 8O load resistor

to speaker

terminal

3. Connect a DC voltmeter between Tpz (+) ana

TPr (- ) (L channet)of Fig. B. Corrnect

the DC

voltmeter between Tpr (+l anOfpi 1_) at the

R channel.

4. S_et

the power switch to the ON position, and

check if the DC voltmeter reaaingis-

within the

JO.- ZO_ryVrange.

When

the uoitrnil;. reading

betow 10mV, cut jumper (A) ;;;1 channel.

_ 9yt jumper (B) for R àfrannet.

a. rJrsconnect

the DC voltmeter, andapply asignal

to the input terminals and confirm îhat thereis

no crossover

distortion in the output waveform.

Fig.

3 ldle

current

adjustment

voltmeter

siA-E'cl6

o@._

P^^ Bottom

plate

FUNCTION

5. PARTS LOCATIONS

o TJte

.,1 marh found on some component parts indicates

the importance of the safety facior ài-tii port. rn"r"-

f1yy, wlen reptacing, o"'rir"'ià- u,u"'p*i of identicat

designation.

5.1 FRONT

PANEL

VIEW

Push

knob (SPEAKERSI

AAD.154 Knob

(VOLUME)

AAB.178

Bon

net

ANE.19

LED

AEL-308 Front panel

assemblv

ANB-628

i;r AA8-180

Push

knob

(LOUDN

ESS,

TAPE

MONITOR)

AAD.154

Knob

(BALANCE)

AAB-t80

f , Recessed

ptug

{AC TNLET)

L-I AKP-OO8

fi Plue

in setector

(2-positronl

a AKX-O57

Term;nat

(SpEAKERS)

AKE-026

"*'

Knob

(TREBLE)

AAB-180 a

5.2 REAR

PANEL

VIEW

Termînat

(tNpUT)

AKB.055

Terminat

(GND)

AKE-O31

Terminat

(TApE)

AKB.O54

DIN terminal

AKP-024

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