Technics SH-AC500D Manuale utente

ORDER

NO.

MD9905090C2

Service

Manual

Digital

Surround

Processor

DIGITAL

D[ecsvsunouns]

DUfor]

Prey

H-AC500D

Colour

(WK)

aacan

Black

Type

Area

Guten)

wea

|

cour

Manufactured

under

license

from

Dolby

Laboratories.

“DOLBY”,

“Pro

Logic”

and

the

double-D

symbol

are

trademarks

of

Dolby

Laboratories.

Confidential

Unpublished

Works.

©

1992-1997

Dolby

Laboratories,

Inc.

All

rights

reserved.

DTS

Inc.

USP

No.

5,

451,

942.

Specifications

AUDIO

Total

harmonic

distortion

Frequency

response

FRONT

L/R

(1

kHz,

0

dB,

PCM)

0.007%

FRONT

L/R,

CENTER,

SURROUND

L/R

(LARGE)

Dynamic

range

96

dB

20

Hz-20

kHz,+1dB

S/N

(IHF-A)

100

dB

Outlet

voltage/Impedance

2

V

(at0

dB)/1

kQ

~~

Load

impedance

More

than

10

kQ

Input

impedance

LINE

22kQ

H

GENERAL

COAXIAL

75

kQ

Power

supply

AC

230

-

240

V,

50

Hz

Delay

time

Power

consumption

18W

DOLBY

DIGITAL

Dimensions

(W

X H X

D)

430

X

69.4

X

301.4

mm

CENTER

O0-5ms_

Weight

2.6

kg

SURROUND

L/R

0-15

ms

DOLBY

PRO

LOGIC

Notes

:

SURROUND

L/R

15-30ms

_

Specifications

are

subject

to

change

without

notice.

Weight

and

dimensions

are

approximate.

A,

WARNING

This

service

information

is

designed

for

experienced

repair

technicians

only

and

is

not

designed

for

use

by

the

general

public.

It

does

not

contain

warnings

or

cautions

to

advise

non-technical

individuals

of

potential

dangers

in

attempting

to

service

a

product.

Products

powered

by

electricity

should

be

serviced

or

repaired

only

by

experienced

professional

technicians.

Any

attempt

to

service

or

repair

the

product

or

producis

dealt

with

in

this

service

information

by

anyone

else

could

result

in

serious

injury

or

death.

©

1999

Matsushita

Electronics

(S)

Pte.

Lid.

=

go

All

rights

reserved.

Unauthorized

copying

ec

nics

and

distribution

is

a

violation

of

law.

SH-AC500D

|

i

Contents

PAGE

©,

ACCESSORIES

vicsicciwecetiinesesshastecdeaadear

tact

stieenaetenaee

2

e

CAUTIONS

FOR

AC

MAINS

LEAD...........

eee

3

e

FRONT

PANEL

CONTROLS

............cccccceeeecccceeeeeeeeeees

4

©

CONNECTIONS

uuu...

eceececeeecceccecceceececeeseecaaeseeeecesenee

5~7

«

(SPEAKER

SET

TIN

Giwtecrseeccesthexxted

oc

ecrtsaciesnedis

aveets

8

e

SPEAKER

OUTPUT

ADJUSTMENTS

...........c

eee

9~10

e

DELAY

TIME

ADJUSTMENTS

.............cccccceeeseeeseeeeeeee

1

e

ENJOYING

SOUND

IN

A

VARIETY

OF

REPRODUCTION

MODES.

.........ccccceeceeeeeeseeeeeeeeeeeeaeee

12~13

©

OTHER

FUNCTIONS

2.00.0...

cece

csseseececcnseseeseseeneeneeeee

14

e

REMOTE

CONTROL

QUICK

REFERENCE

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

15

©

OPERATION

CHECKS

.........ccccccceeceneeseccssecensesereenseenee

16~17

Mi

Accessories

e

TERMINAL

FUNCTION

OF

IC’S

e

TYPE

ILLUSTRATION

OF

IC’S,

TRANSISTORS

AND

DIODES

e

BLOCK

DIAGRAM

e

SCHEMATIC

DIAGRAM

e

PRINTED

CIRCUIT

BOARD

e

CABINET

PARTS

LOCATION

e

REPLACEMENT

PARTS

LIST

e

RESISTORS

&

CAPACITORS

e

PACKING

MATERIALS

&

ACCESSORIES.

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

©

PACKAGING

uu...

eee

AC

power

supply

cord

for

United

Kingdom

Optical-fiber

cable

;

(eal.

ties

==

ES

=)

AC

power

supply

cord

for

Others

Remote

control

unit

Monaural

connection

cables

Batteries

Stereo

connection

cables

@

Caution

for

AC

Mains

Lead

(For

“EB”

area

code

model

only.)

For

your

safety,

please

read

the

following

text

carefully.

This

appliance

is

supplied

with

a

moulded

three

mains

plug

for

your

safety

and

convenience.

A

5-ampere

fuse

is

fitted

in

this

plug.

Should

the

fuse

need

to

be

replaced

please

ensure

that

the

replacement

fuse

has

a

rating

of

5-ampere

and

that

itis

approved

by

ASTA

or

BSI

to

BS1362.

Check

for

the

ASTA

mark

<>

or

the

BSI

mark

@

on

the

body

of

the

fuse.

If

the

plug

contains

a

removable

fuse

cover

you

must

ensure

that

it

is

refitted

when

the

fuse

is

replaced.

If

you

lose

the

fuse

cover,

the

plug

must

not

be

used

until

a

replacement

cover

is

obtained.

A

replacement

fuse

cover

can

be

purchased

from

your

local

dealer.

CAUTION

!

IF

THE

FITTED

MOULDED

PLUG

IS

UNSUITABLE

FOR

THE

SOCKET

OUTLET

IN

YOUR

HOME

THEN

THE

FUSE

SHOULD

BE

REMOVED

AND

THE

PLUG

CUT

OFF

AND

DISPOSED

OFF

SAFELY.

THERE

IS

A

DANGER

OF

SEVERE

ELECTRICAL

SHOCK

IF

THE

CUT

OFF

PLUG

IS

INSERTED

INTO

ANY

13-AMPERE

SOCKET.

If

a

new

plug

is

to

be

fitted,

please

observe

the

wiring

code

as

shown

below.

If

in

any

doubt

please

consult

a

qualified

electrician.

IMPORTANT

The

wires

in

this

mains

lead

are

coloured

in

accordance

with

the

following

code:

Blue:

Neutral

Brown:

Live

As

these

colours

may

not

correspond

with

the

coloured

markings

identifying

the

terminals

in

your

plug,

proceed

as

follows:

The

wire

which

is

coloured

Blue

must

be

connected

to

the

terminal

which

is

marked

with

the

letter

N

or

coloured

Black

or

Blue.

The

wire

which

is

coloured

Brown

must

be

connected

to

the

terminal

which

is

marked

with

the

letter

L

or

coloured

Brown

or

Red.

WARNING:

DO

NOT

CONNECT

EITHER

WIRE

TO

THE

EARTH

TERMINAL

WHICH

IS

MARKED

WITH

THE

LETTER

E,

BY

THE

EARTH

SYMBOL

—

OR

COLOURED

GREEN

OR

GREEN/YELLOW.

THIS

PLUG

IS

NOT

WATERPROOF—KEEP

DRY.

SH-AC500D

Before

use

Remove

the

connector

cover.

How

to

replace

the

fuse

The

location

of

the

fuse

differ

according

to

the

type

of

AC

mains

plug

(figures

A

and

B).

Confirm

the

AC

mains

plug

fitted

and

follow

the

instructions

below.

Illustrations

may

differ

from

actual

AC

mains

plug.

1.

Open

the

fuse

cover

with

a

screwdriver.

Figure

A

7

Figure

B

2.

Replace

the

fuse

and

close

or

attach

the

fuse

cover.

Figure

A

Fuse

(5

ampere)

OS

Figure

B

Fuse

(5

ampere)

SH-AC5O0D

|

i

Front

panel

controls

ers

eegate

vere

ni

BEN

cematinee

er

Bee

ester

eceerntmana

econ

sence

on:

g

A

RRA

ELLIO

ORME

eG

RERUN

etal)

nt

Naar

nn

i

Yr

NERENE

DHRR

HECHT

Ee

SR

RARER

Aiea

mieten

pet

anR

eRe

AOS

NEEIAD

oieitaL

CO

#29

Loic,

Sb

POS

PEO

DE

AOE

TRAVIAN

SYNE

PRL

NMA

SRI

2

PSSA

AS

SRNR

ILO

UUO

MTN ERA

HORII

Control

section

Zl

@

Unit

on/off

button(

a

©

=

cbf)

and

remote

standby

indicator

(¢/))

,

Use

this

button

to

turn

the

unit

on

and

off.

BZ

(off):

The

unit

is

in

standby

mode.

-=.

(on):

The

unit

is

on.

The

unit

can

be

turned

on

and

off

with

the

remote

control.

When

the

unit

is

turned

off

with

the

remote

control

it

is

in

remote

standby

and

the

indicator

lights.

The

unit

is

still

using

a

smali

amount

of

power

in

the

standby

and

remote

standby

conditions.

Standby

uses

less

power.

When

the

unit

is

connected

to

the

AC

mains

lead,

this

indicator

lights

up

in

standby

mode

and

goes

out

when

the

unit

is

turned

on.

@

Input

select

buttons/indicators

(DIGITAL

1,

DIGITAL

2,

DIGITAL

3,

LINE)

@

Surround

mode

button

(SURROUND)

@

Digital

Theater

Systems

mode

button

(DTS)

©

Stereo

mode

button

(STEREO)

©

Volume

control

(VOLUME)

Main

unit

oni

@

Speaker

setting

buttons

(CHANNEL/SET,

SELECTOR)

@®

Dynamic

range

compression

button

(DR

COMP)

@

Balance

control

(L,

R)

(©

Output

level

setting

buttons

(TEST,

LEVEL,

-,

+)

@

Delay

time

setting

buttons

(DELAY,

-,

+)

(2

Dimmer

button

(DIMMER)

(3

Muting

button

(MUTING)

|

Display

section

E]

(@

Surround

format

indicators

(OU

DIGITAL,

E233,

OO

PRO

LOGIC)

@

Display

(®

Dynamic

range

compression

indicator

(DR

COMP)

@

Speaker

indicators

Light

in

accordance

with

the

speaker

setting,

and

each

of

the

indicators

corresponding

with

the

speaker

concerned

flashes

when;

e

the

type

or

presence

of

that

speaker

is

set,

e

the

test

signal

is

output

from

that

speaker,

e

the

output

level

or

delay

time

of

that

speaker

is

adjusted.

18

Signal

format

indicators

(LS,

C,

RS,

L,

R,

S,

LFE)

These

indicators

light

up

to

indicate

the

Dolby

Digital

or

DTS

input

signal

format.

LS:

Surround

speaker

(left)

C:

Center

speaker

RS:

Surround

speaker

(right)

L:

Front

speaker

(left)

R:

Front

speaker

(right)

“S"

represents

the

mono

surround

and

“LFE”

(Low

Frequency

Effect)

is

a

channel

for

the

deep-bass

effect

in

the

low

frequency

range.

SH-AC500D

Hi

Connections

Before

proceeding

with

the

connections,

ensure

that

the

power

to

S

:

bi

all

the

units

has

been

turned

off.

tereo

connection

cable

Connect

the

AC

power

supply

cord

only

after

all

other

cables

and

aU

is

=

>on.

cords

are

connected.

Red

(R)

Connection

to

a

receiver

or

amplifier

Connection

to

a

receiver

(or

amplifier}

with

6

channel

discrete

input

terminals

|

Sa

efs00)9)

DIGITAL(O0

DIGITAL/DTS/PCM)

D©

©,O}

[li

©

(o

©)

POO

DIGITAL

1

OIGITAL2

=

DIGITAL

3.

FRONT

SUBWOOFER

SURROUND

Stereo

connection

cables

(included)

os

Monaural

connection

cables

(included)

Receiver

or

amplifier

(This

illustration

is

an

example

of

connection

from

this

unit

to

a

model

SA-AX720

receiver.)

DV

pee

DVD/6CH

=

SUBWOOFER

SURROUND

R

foo)

(oO)

0

©

eal

(XO)

10)

©00

SEQ

Oo

SEQ

Oo

For

your

reference:

The

position

and

labeling

of

terminals

differs

with

the

receiver

(or

amplifier).

The

“DVD/DVD

6

CH”

terminal

in

the

above

illustration,

for

example,

is

often

labeled

as

“FRONT

(L,

R).”

SH-ACSOOD

|

Connections

for

outputting

the

6

channel

signals

through

3

power

amplifiers

]

This

illustration

is

an

example

of

connection

from

this

unit

to

a

stereo

control

amplifier

of

model

SU-C1000

and

three

stereo

power

amplifiers

of

model

SE-A1000.

SH-ACS00D

DIGITAL(Q9

DIGITAL/DTS/PCM)

JO

Dg

©

DIGITA,

QIGITAL2

—

DIGITAL

|LBWOOFER

LINE

‘SURROUND

IN

Stereo

connection

cable

(not

inculuded)

Stereo

connection

cables

(inculuded)

Control

amplifier

(not

included)

PREOUT

oaao

oooo0.0

0

O

o

00

Fj

00

Co

er

Monaural

connection

cables

(included)

For

your

reference:

If

three

integrated

amplifiers

are

connected

instead

of

the

power

amplifiers,

it

is

not

necessary

to

connect

a

stereo

control

amplifier.

Connect

the

output

terminals

of

this

Stereo

power

Stereo

power

unit

to

the

See

input

terminals

of

the

amplifier

for

aia.

ai

integrated

amplifiers.

center

speaker

:

INPUT

(got

included

INPUT

speakers

or

LINE

IN

or

LINE

IN

)

or

LINEIN

|

(not

included)

Stereo

power

amplifier

for

front

(L,

R)

speakers

(not

included)

WW

1777

WA

1472

1

000

ome)

——

WW

1777

WW

1477

WA

17747

WW

1777

CI

600

one)

jm

oxon@)

[ome)

CS

___

a

Se

Front

speaker

(not

included)

INPUT

or

LINE

IN

Front

speaker

(not

included)

Subwoofer

built-in

Center

speaker

amplifier

(not

included)

(not

included)

Surround

speaker

(ny,

(not

included)

Surround

speaker

(not

included)

|

SH-AC500D

Connections

to

audio-visual

equipment

and

the

AC

power

cord

Sak

Nesayols)

Pata

mDaTALDTEFCM

1G)

6)

CENT

PO©

20

FRONT

SUBWOOFER

SURROUND

j}

FRONT

“6|O*_.©

Oa

©

Oa

SUBWOOFER

SURROUND

Optical-fiber

cable

(not

included)

(included)

Coaxial

cable

(not

included)

DIGITAL

OUT

DVD

player,

etc.

(not

included)

Connection

for

optical-fiber

cable

Dust-protection

cap

©

Do

not

bend

the

optical-fiber

cable

at

a

sharp

angle.

@

If

the

digital

optical

connector

is

not

going

to

be

used,

be

sure

to

attach

the

dust-protection

cap

to

prevent

exposure

to

dust.

“DIGITAL

1”

terminals

8

Disconnect

the

coaxial

cable

from

the

DIGITAL

1

terminal

when

using

an

optical

fiber

cable.

Only

the

coaxial

cable

is

recognized

if

both

types

are

connected.

Coaxial

cable

(not

included)

DIGITAL

OUT

AC

power

supply

cord

(included)

4)

Household

AC

outlet

:

(AC

120

V/60

Hz)

DIGITAL

OUT

Other

digital

playback

sources

(laser

disc

players,

etc.)

“LINE

IN”

terminals

(Only

if

a

control

amplitier

has

not

been

connected.)

You

can

connect

a

set-top

box

tuner

for

digital

television

or

similar

decoder.

If

“LINE”

is

selected

with

the

input

selector

on

this

unit,

the

signals

received

through

these

terminals

are

output

as

they

are

without

passing

through

any

sound

control

circuits

(i.e.

no

volume

or

other

sound

adjustments

can

be

made

with

this

unit.)

@

Dolby

Digital

RF

(radio

frequency)

signals

cannot

be

decoded

with

this

unit

even

if

a

unit

that

has

Dolby

Digital

RF

output

terminals

is

connected

to

this

unit.

Turn

off

the

power

to

this

unit

if

unusual

hissing

or

beat

sounds

are

heard

while

listening

to

FM,

AM,

or

television

broadcasts.

SH-AC500D

li

Speaker

setting

Set

the

types

and

presence

of

the

speakers

before

enjoying

the

sound

by

reproducing

the

input

source.

Before

proceeding:

Check

the

frequency

range

of

each

speaker

to

be

used.

Consider

speakers

capable

of

playing

back

low

frequency

sounds

(below

around

100

Hz)

as

LARGE.

Consider

speakers

not

capable

of

playing

back

low

frequency

sounds

as

SMALL.

Press

POWER.

owaon

Press

CHANNEL/SET,

and

select

the

channel

for

which

the

speaker

is

to

be

set.

becoescucccavceconvesoen

wepececococvevecerossgsn0e

Keene

Bevecseosvocensceace

Each

time

the

button

is

pressed,

the

channel

display

is

SPEAKER

SETTING

switched

in

the

listed

order.

CHANNEUSET

FRONT:

Front

speakers

CENTER:

Center

speaker

SURROUND:

Surround

speaker

SUB-WFR:

Subwoofer

COMPLETE:

Select

this

when

you

have

completed

the

settings.

The

selected

channel

is

shown

on

the

display

for

approx.

2

seconds.

The

current

setting

for

that

channel

is

then

shown

as

a

flashing

display.

The

indicator

corresponding

to

the

selected

speaker

also

continues

to

flash.

Press

SELECTOR,

and

set

the

type

(LARGE,

SMALL)

and

presence

(YES,

NO

or

NONE)

of

the

speaker.

Each

time

the

button

is

pressed,

the

display

is

switched

in

the

listed

order.

LARGE:

select

if

the

speaker

can

produce

low

frequency

sounds,

SMALL:

select

if

the

speaker

cannot

produce

low

frequency

sounds,

NONE:

select

if

you

are

not

using

a

center

speaker

or

surround

speakers,

YES:

select

if

you

are

using

a

subwoofer,

NO:

select

if

you

are

not

using

a

subwoofer.

The

sound

for

speaker

channels

that

are

set

to

“NONE”

or

“NO”

are

output

from

the

front

speakers.

DTS

format

software,

however,

depends

upon

all

channels

being

operable,

and

so

the

sound

for

speakers

not

connected

is

not

heard

at

all,

no

matter

what

settings

are

made.

SELECTOR

Repeat

steps

2

and

3

to

complete

the

settings

\

for

all

the

channels.

Press

CHANNEL/SET

to

select

“COMPLETE”.

(FRONT)|

LARGE

SMALL

The

settings

are

now

entered

into

the

unit’s

memory.

The

display

goes

out

after

about

2

seconds

and

the

|

LARGE

NONE

display

reappears.

The

speaker

indicators

light

up

unless

“NONE”

or

“NO”

has

been

selected

for

the

corresponding

channel.

(SURROUND)

[LARGE

|—-[SMALL}—-[

NONE

]}

[Ee

If

no

buttons

are

pressed

for

approx.

10

seconds

during

the

setting

process,

ail

are

canceled,

the

setting

mode

is

SUB-WER

released,

and

the

original

display

is

restored.

(

)

YES

NO

Begin

the

setting

process

again

if

this

occurs.

For

your

reference:

The

setting

remains

as

it

is

until

changed

by

the

above

procedure,

even

after

the

power

has

been

turned

off.

SH-AC500D

li

Speaker

output

adjustments

Set

the

initial

output

level

first,

then

proceed

to

adjust

the

output

level

for

each

speaker

channel.

|

Setting

the

initial

volume

level

When

this

unit

is

connected

to

a

receiver

(or

amplifier)

that

has

6

channel!

discrete

input

terminals:

Set

the

volume

level

to

0

dB

using

this

unit’s

VOLUME

control.

Set

the

volume

control

of

the

receiver

(or

amplifier)

to

the

position

normally

used

for

yf

.

#4

enjoying

the

source.

If

the

test

signal,

described

below

in

“Speaker

output

adjustment”,

is

too

soft,

adjust

the

volume

on

the

receiver

(or

amplifier).

If

the

input

level

to

the

receiver

(or

amplifier)

is

too

loud,

lower

the

volume

level

using

this

unit’s

VOLUME

control.

When

this unit

is

connected

to

three

standard

stereo

amplifiers:

Set

the

volume

level

to

around

-48

dB

using

this

unit’s

VOLUME

control.

Ej

(If

this

unit

is

connected

to

three

integrated

amplifiers:)

owen

Set

the

volume

control

of

the

integrated

amplifiers

to

the

position

normally

used

for

enjoying

the

source.

If

the

test

signal,

described

below

in

“Speaker

output

adjustment’,

is

too

soft

or

too

loud,

adjust

the

volume

on

this

unit.

Adjust

the

output

level

of

each

speaker

G@intatkecntmlmen

Use

the

test

signal

to

adjust

the

output

level

of

the

center

speaker,

surround

speakers

and

subwoofer.

MUTING

CO)

VOLUME

CO

Note]

ae

|

ae

If

the

output

from

the

front

speakers

is

unbalanced,

make

balance

adjustments

on

the

receiver

or

amplifier

before

continuing

with

the

following.

(Refer

to

the

instruction

manual

of

the

component.)

If

the

receiver

or

amplifier

cannot

be

used

to

make

balance

adjustments,

they

can

be

made

on

this

unit.

Press

SURROUND

to

select

the

surround

mode.

“SURROUND?”

appears

on

the

display.

(Continued

on

SURROUND

‘

SH-AC500D

BALANCE

DIGITAL? DIGITAL2

DIGITA3

LINE

=

VOLUME

+

Center

position

Press

TEST

to

output

the

test

signal.

“TEST”

appears

on

the

display,

and

the

speaker

indicator

corresponding

to

the

speaker

whose

outputting

sound

flashes.

The

test

signal

is

automatically

output

from

each

speaker

for

2

seconds

in

the

following

sequence:

c

c>R->

Boba

ey

L:

Front

speaker

(left)

C:

Center

speaker

R:

Front

speaker

(right)

RS:

Surround

speaker

(right)

LS:

Surround

speaker

(left)

SW:

Subwoofer

(Speakers

for

which

NONE

or

NO

has

been

set

are

skipped.)

lf

the

left

and

right

front

speaker

balance

is

poor,

do

not

proceed

with

the

until

balance

has

been

improved

with

the

procedure

described

below

(4).

Press

LEVEL

to

select

the

speaker

channel

to

adjust.

The

output

level

appears

on

the

display,

and

the

speaker

indicator

for

the

selected

speaker

flashes.

Each

time

the

button

is

subsequently

pressed,

the

speaker

whose

level

is

to

be

set

is

selected

in

the

listed

sequence.

(Speakers

for

which

NONE

or

NO

has

been

set

are

skipped.)

6!

Press

LEVEL

[-]

or

[+]

to

adjust

the

output

level.

Channels

C,

RS,

LS,

and

SW

can

be

adjusted

between

-12

dB

and

+12

dB.

Set

them

so

that

the

output

from

each

channel

appears

to

be

the

same

as

that

from

the

front

speakers.

Repeat

steps

5

and

6

to

adjust

the

output

of

each

channel

to

approximately

the

same

apparent

level.

To

stop

the

test

signal

Press

TEST.

Using

this

unit

to

adjust

the

balance

of

the

left

and

right

front

speakers

ZI

Make

the

adjustments

while

listening

to

the

test

signa!

put’

out

in

step

4

above.

Press

BALANCE

[L]

or

[R]

on

the

remote

control

to

adjust

the

level

balance.

The

left/right

balance

appears

on

the

display.

Each

time

the

button

is

subsequently

pressed,

the

output

level

of

the

front

speaker

opposite

to

the

button

pressed

is

decreased.

(i.e.

when

the

L

button

is

pressed,

the

output

level

of

the

R

speaker

is

decreased.)

The

original

display

is

restored

if

a

button

isn’t

pressed

for

4

or

more

seconds.

The

balance

of

the

surround

speakers

cannot

be

adjusted

using

the

BALANCE

buttons.

==

10:

Technics SH-AC500D Manuale utente

Manuali Hardware per computer popolari di altre marche