Pioneer SA-5800 Manuale utente

this

photo

you

can

see

Model

SA-5800

Service

anual

STEREO

AMPLIFIER

A-58S00

A-50&

PIONEER’

Both

Model

SA-5800

and

Model

SA-508

have

the

same

basic

performance.

The

major

difference

appearance,

Model

SA-5800

being

fitted

with

wooden

side

cover

and

top

cover,

while

Model

SA-508

employs

metal

cover.

The

following

table

displayed

the

SA-5800

and

SA-508.

MODEL

SA-5800

120V

only

U.S.A,

model

120V

only

Canada

model

MODEL

SA-508

This

service

manual

applicable

the

type

the

Model

SA-5800

and

the

Model

SA-508.

When

re-

pairing

the

type

the

Model

SA-5800

and

the

type

the

Model

SA-508,

please

see

the

additional

service

manual

(ART-373),

and

for

HE, HB,

types

the

SA-508,

please

see

the

additional

service

manual

(ART-374).

CONTENTS

SPECIFICATIONS

.......0.

ccc

cece

eee

SCHEMATIC

DIAGRAM,

P.C.

BOARD

FRONT

PANEL

FACILITIES..............

PATTERNS

AND

PARTS

LIST

BLOCK

DIAGRAM.................-...

9.1

Miscellanea

2...

CIRCUIT

DESCRIPTIONS................

O12

“Schematic

Disgaea

awsansie

bis

DISASSEMBLY

.........---c0--ee-

00.

9.3.

P.C.

Board

Connection

Diagram..,......

ADJUSTMENTS.

.........--00e

cece

cee.

9.4

Parts

List

P.C.

Board

Assemblies.......

PPAR

eNCCRTGN

cacti

(OAPACKING

Daaaue

ecu

cde

nin

ate,

ahem

SEVERODED

VIEW

oak

okie:

11.

SUPPLEMENTS

FOR

MODEL

SA-508/KU.....

SPECIFICATIONS

Semiconductors

ICS

ieee

oS oR

See

eae

TETANSIStOPS

<4.

els

eck

DIOdES.

wie

ekg

ete

eed

Cee

ELS

Amplifier

Section

Continuous

Power

Output

watts*

per

channel,

min.,

ohms

from

Hertz

20,000

Hertz

with

than

0.03

total

harmonic

distortion

watts

per

channel

ohms

from

Hertz

20,000

Hertz

with

than

harmonic

distortion.

Total

Harmonic

Distortion

(20

Hertz

20,000

Hertz,

ohms,

from

AUX)

continuous

rated

power

output

than

0.03%

12.5

watts

per

channel

power

output

Bitrate

ale

senses

hte

suatSs

than

0.03%

0.05%

total

hace

tee

eto

aes

than

0.03%

Intermodulation

Distortion

(50

Hertz:

7,000

Hertz

4:1,

ohms,

from

AUX)

continuous

rated

power

output

than

0.03%

12.5

watts

per

channel

power

output

SEEACRESAE

Baus

S74

than

0.03%

Dad

canoe

inch

noes

than

0.03%

Output

SPOaken

sescescw

dees

RAG

aden

eee

A+B

4~16

ohms

Headphones..............00055

Low

impedance

Damping

Factor

(1,000

Hertz,

ohms)...........

Input

(Sensitivity/Impedance)

PHONO?

6.05

snide

See

tren

hed

Beek

2.5mV/47kilohms

TUNER:

fn.

eee

ete

150mV/S50kilohms

AUX

23.5

Spee

oes

eek

150mV/50kilohms

TAPE:PLAY

ecdee

dete

tenet

150mV/50kilohms

TARE

PEAY

200.0

oan

150mV/50kilohms

Phono

Overload

Level

(T.H.D.

0.1%

1,000Hz)

PHONO?

0 2

seca

tnaeeu

sete

oes

140mV

Output

TAPE

RECA.

oug

wie

iat

Srentnscihen

anh

eves

Jeane

150mV

TAPE

REG

2...

tee

ead

150mV

Frequency

Response

PHONO

(RIAA

Equalization)

ot,

ase

30Hz

15,000Hz

+0.5dB

Gua?

Bae

eas

20Hz

40,000Hz

+2dB

Tone

Control

BASS

Pace

eds

+7,5dB,

—

7.5dB

(100Hz)

TREBLE

-i6

aeeceshess

+8dB,

—8dB

(10kHz)

SA-5800

Subsonic

Filter...

...........0004

15Hz

(—6dB/oct)

Loudness

Contour

(Volume

control

set

-40dB

POSITION)

pears

Gal

Sle

Bob

wens

+6dB

(100Hz)

Hum

and

Noise

(IHF,

short-circuited,

network)

PHONO)

csv

beso

76dB

TUNER,

AUX,

TAPE

PLAY...............

98dB

Miscellaneous

Power

Requirements

...............65

120V,

60Hz

Power

Consumption

.........

75W

(UL),

180W

(CSA)

Dimensions

..........

451(W)

151(H)

271(D)mm

17-3/4(W)

5-15/16(H)

10-11/16(D)

irr

Weight

(without

package)........---

7.3kg

(16lb

20z)

Furnished

parts

Operating

instructions...

2...

0.0...

eee

]

Measured

pursuant

Federal

Trade

Commission’s

Trade

Regulation

rule

Power

Output.

Claims

for

Amplifiers.

NOTE:

Specifications

and

the

design

subject

possible

modifi-

cation

without

notice

due

improvements.

2.FRONT

PANEL

FACILITIES

@®

POWER

SWITCH

Set

this

switch

supply

power

the

amplifier.

SPEAKER

SELECTOR

Use

this

selector

select

the

speaker

systems.

OFF:

Sound

not

obtained

from

speakers.

Sound

obtained

from

speakers

connected

the

speaker

terminals.

Sound

obtained

from

speakers

connected

the

speaker

terminals.

A+B:

Sound

obtained

from

speakers

connected

both

and

speaker

terminals.

POWER

METER

This

meter

allows

you

read

out

the

rated

power

level

the

fluorescent

display

tube

when

speakers

with

nominal

impedance

ohms

are

connected

the

amplifier’s

speaker

terminals.

FUNCTION

INDICATORS

The

TUNER,

PHONO,

AUX

function

indicators

light

accordance

with

the

position

the

function

selector.

NOTE:

The

function

indicator

will

not

off

even

when

the

tape

monitor

switch

set

ON.

LOUDNESS

SWITCH

When

listening

performance

with

the

volume

control

turned

down,

set

this

switch

and

the

bass

will

accentuated.

When

the

volume

low,

the

human

ear

finds

harder

hear

the

bass

than

when

the

volume

high.

The

loudness

switch

thus

designed

compensate

for

this

deficiency.

setting

ON,

the

bass

comes

through

much

strongly

and

the

sound

takes

punch

even

when

the

volume

control

turned

down.

VOLUME

CONTROL

Use

this

control

adjust

the

output

level

the

speakers

and

headphones.

Turn

clockwise

increase

the

output

level.

sound

will

heard

you

set

“0”.

HEADPHONE

JACK

Plug

the

headphones

into

this

jack

when

you

want

listen

through

your

stereo

headphones.

NOTE:

Set

the

speaker

selector

OFF

when

listening

only

with

headphones.

(8)

BASS

AND

TREBLE

CONTROLS

Use

these

controls

adjust

the

bass

and

the

treble.

you

turn

the

bass

control

the

right

from

its

center

position,

you

will

able

emphasize

the

sound

the

low-frequency

range.

Conversely,

turning

this

control

left

from

the

center

position,

you

will

attenuate

the

sound.

You

can

use

the

treble

control

adjust

the

sound

the

high-frequency

range.

BALANCE

CONTROL

Use

this

control

balance

the

volume

the

left

and

right

channels.

the

sound

appears

louder

the

right,

means

that

the

volume

the

right

channel

higher.

Turn

the

balance

contro!

the

left

and

adjust.

Conversely,

the

sound

appears

louder

the

left,

means

that

the

volume

the

left

channel

higher.

Therefore,

turn

the

balance

control

the

right

and

adjust.

SUBSONIC

FILTER

SWITCH

When

this

switch

set

the

15Hz

position,

the

subsonic

filter

with

cut-off

frequency

15Hz

actuated.

The

subsonic

filter

serves

attenuate

frequencies

lower

than

15Hz

6dB/oct

slope.

therefore

effective

suppressing

ultra-low-

frequency

noise

which

generated

record

warp

and

other

causes.

You

cannot

actually

hear

this

noise

but

factor

the

generation

intermodulation

distortion

and

may

damage

your

speaker

system.

Set

this

switch

the

15Hz

position

during

record

play

for

the

best

effect.

SA-5800

FUNCTION

SELECTOR

Use

this

selector

select

the

program

source.

When

set,

the

function

indicator

above

the

meter

panel

corresponding

the

position

the

func-

tion

selector

will

light

up.

TUNER:

Set

here

when

listening

broadcasts

tuner

connected

the

TUNER

jacks.

(The

TUNER

function

indicator

lights

up.)

PHONO:

Set

here

when

playing

records

turntable

connected

the

PHONO

jacks.

(The

PHONO

function

indicator

lights

up.)

AUX:

Set

here

when

listening

program

source

which

connected

the

AUX

jacks.

(The

AUX

function

indicator

lights

up.)

TAPE

MONITOR

SWITCHES

(1,

Use

these

switches

monitor

recording

tape

being

played

back

tape

deck.

Set

this

switch

when

you

want

monitor

recording

tape

being

played

back

tape

deck

which

connected

the

TAPE

jacks.

Set

this

switch

when

you

want

monitor

recording

tape

being

played

back

tape

deck

which

connected

the

TAPE

jacks.

NOTE:

Set

these

switches

the

upper

(OFF)

position

when

playing

records

listening

broadcasts.

BLOCK

DIAGRAM

PHONO

AUX

TUNER

REC

PLAY

REC

PLAY

TAPE

REC

PLAY

REC

PLAY

CHANNEL

RECTIFIER

}

FLHEATER

CIRCUIT

DESCRIPTIONS

Equalizer

Amplifier

The

equalizer

amplifier

collector-to-emitter

feed

back

type

2-stage

direct-coupled

amplifier,

designed

with

gain

35.5dB

(at

1kHz),

over-

load

level

140mV

(at

1kHz,

THD

0.1%),

and

equalizer

deviation

+0.5dB

(30Hz-15kHz).

Power

Amplifier

This

all-stage

direct-coupled

pure

complemen-

tary

SEPP

circuit

features

current

mirror

load

differential

amplifier

the

first

stage,

and

in-

corporates

the

tone

control

circuits

the

NFB

loop.

Although

the

incorporation

the

tone

control

circuits

the

power

amplifier

stage

reduces

the

number

elements

that

the

signal

has

pass

through,

and

thereby

further

reduces

noise,

distor-

tion,

and

cost,

the

power

stage

does

require

higher

gain

and

higher

degree

stability.

the

SA-5800,

this

high

gain

and

high

stability

are

achieved

current

mirror

load

differential

amplifier

the

first

stage

and

the

use

bootstrap

circuit

for

the

load

the

pre-driver

stage.

The

power

stage

Darlington

connection

pure

complementary

SEPP

circuit,

resulting

output

power

rating

25W+25W

(82,

20Hz-

20kHz,

THD

0.03%).

39.548

VOLUME

IkHz

(

SAME

VOLTAGE

REGULATOR

CONTROL

SUBSONIC

FUNCTION

SPEAKER

CHANNEL)

ore

SPEAKER

}

POWER

STAGE

AMP,

POWER

AMP,

INDICATOR

DRIVE

CIRCUIT

The

tone

controls

(BASS,

TREBLE)

are

operat-

changing

the

frequency

response

the

power

amplifier

NFB

circuit.

Power

Supply Muting

This

circuit

designed

eliminate

the

un-

wanted

click

noise

generated

when

the

power

switch

turned

and

off.

With

reference

Fig.

4-1,

when

the

power

switch

turned

on,

will

remain

off

because

-B,,

and

then

emitter

will

become

—0.6V

through

the

minus

voltage

supply

route

(D,,

D3,

and

R,,.).

The

base

voltage

will

increase,

the

rate

increase

being

determined

the

R2,

R;,

AMP,

FIRST

STAGE

POWER

AMP.

POWER

LINE

POWER

STAGE

Fig.

4-1

Power

supply

and

muting

circuit

and

time

constant.

Consequently,

emitter

voltage

will

rise

increase

the

base

voltage.

Therefore,

the

muting

action

when

the

power

switch

turned

achieved

delaying

the

supply

the

+B,

the

equalizer

amplifier

and

the

first

stage

the

power

amplifier.

When

the

power

switch

turned

off,

the

—B,

discharged

through

the

route

R,;—>

C,,

and

since

the

residual

voltage

then

applied

the

base

through

and

R;,

immediately

turned

on.

Therefore,

the

base

voltage

the

drops

OV,

and

the

+B,

supply

the

equalizer

amplifier

and

the

first

stage

the

power

amplifier

are

interrupted.

Indicator

Circuit

The

SA-5800

output

power

and

function

indi-

cators

feature

fluorescent

indicator

tube

(FL

tube).

this

tube,

thermionic

emissions

from

the

cathode

are

accelerated

into

the

fluorescent

substance

the

segmental

anodes,

resulting

the

emission

light.

This

tube

used

indicate

numerals,

letters,

and

other

symbols.

(TA73IGP)

172

SIGNAL

INO

FLUORESCENT

FILAMENT

SA-5800

outline

the

tube

drive

circuit

shown

Fig.

4-2.

The

output

circuit

signal

applied

no.

(4)

the

(TA7318P-A).

The

contains

detector

circuit,

compressor

(40dB),

and

peak

hold

circuit

for

both

left

and

right

chan-

nels.

The

dynamic

range

the

signal

thus

contracted

40dB

obtain

‘‘peak

held”

voltage.

The

output

power

indicator

segments

the

tube

are

driven

the

HA12010

ICs

(one

for

each

channel)

equipped

with

pairs

differen-

tial

amplifiers.

These

amplifiers

are

biased

in-

creasing

levels,

each

amplifier

will

commence

operate

separately

the

input

level

increases.

And

since

these

amplifiers

apply

the

voltages

the

output

power

indicator

segments,

each

suc-

cessive

segment

will

light

turn

the

input

level

rises.

The

function

indicators

are

lit

result

voltage

being

applied

the

corresponding

func-

tion

indicator

segment

according

the

selected

positions

the

FUNCTION

switch.

INDICATOR

TUBE

Fig.

4-2

Indicator

circuit

DISASSEMBLY

Side

Covers

and

Top

Cover

Remove

the

four

screws

(A),

and

remove

the

left

and

right-hand

side

covers.

Remove

the

two

screws

(B),

and

remove

the

top

cover.

Bottom

Plate

Remove

the

four

screws

(C).

Front

Panel

Pull

off

all

the

knobs,

and

remove

the

four

nuts

(D).

Side

cover

Front

panel

Side

cover

SA-5800

ADJUSTMENTS

Idie

Current

Adjustment

Tum

the

VOLUME

control

down

minimum

level,

turn

the

power

on,

and

wait

about

minutes.

Connect

voltmeter

the

terminals

ch;

TP,

@®

and

TP,

©,

ch;

TP;

and

TP,

©)

the

GWK-128.

Check

that

the

voltage

between

TP,

and

TP,

ch)

lies

within

the

4.4mV-35mV

range.

Then

make

similar

check

for

the

(be-

tween

TP;

and

TP,

the

voltage

less

than

4.4mV,

cut

jumper

ch),

and

jumper

ch).

the

voltage

exceeds

35mV,

check

for

circuit

failure.

Jumper

Fig.

6-1

Output

Indicator

Adjustment

Set

the

tone

control

the

flat

position.

Set

the

SPEAKERS

selector

the

position,

and

connect

resistor

and

voltmeter

the

speaker

output

terminals.

@—

vr,

Set

the

FUNCTION

switch

the

AUX

posi-

©—vr,

tion,

and

apply

1kHz,

150mV

signal

the

AUX

input

terminals.

Adjust

the

VOLUME

control

that

the

volt-

age

the

output

terminals

(SPEAKERS)

reads

(AC).

Adjust

VR,

(Lch)

and

VR,

ch)

the

indi-

Cator

assembly

that

the

output

power

indi-

Fig.

6-2

cator

reads

watts.

Indicator

assembly

Panel

stay

The

mark

found

some

component

parts

indicates

PARTS

LOCATION

the

importance

the

safety

factor

the

part.

There-

fore,

when

replacing,

sure

use

parts

identical

Front

Panel

View

designation.

Front

panel

assembly

Lever

knob

ANB-736

AAD-183

Knob

AAB-204

AAB-202

Lever

knob

AAD-183

Lever

knob

AAD-183

Knob

AAB-203

AAB-204

Lever

knob

AAD-183

Front

View

with

Panel

Removed

Fluorescent

indicator

tube

Lever

switch

(LOUDNESS)

AAV-004

ASK-155

Variable

resistor

Rotary

switch

(SPEAKERS)

(VOLUME)

Lever

switch

Lever

switch

(TAPE

MONITOR

(POWER)

ASK-156

ASK-514

Slide

rotary

switch

(FUNCTION)

(PHONES)

ASE-110

;

Variable

resistor

(BASS)

{SUBSONIC)

ACT-117

Variable

resistor

(TREBLE

Variable

resistor

(BALANCE)

ACT-117

ACT-118

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