Denon PMA-925R User manual

[)

a

N

©

N

Hi-Fi

Integrated

Stereo

Amplifier

SERVICE

MANUAL

MODEL

PMA-925R/725R

INTEGRATED

STEREO

AMPLIFIER

PMA-925R

DENON

wrconrctnenies

aren

uerrmeamens

amit

tc

7

0

606

©

PMA-725R

CONTENTS

OPERATING

INSTRUCTIONS

......0

0.

ccc

cece

ccc

e

tence

een

eee

e

een

n

enn

e

ence

ete

e

eee

eeennnee

2-7

REMOVAL

OF

EACH

SECTION

......-0.

cee

cece

terete

nen

e

teen

een

n

een

e

nen

nets

8,9

FUNCTION

OF

NEW

CIRCUIT........0

00

ccc

cence

nee

ence

nee

e

rene

en

ence

nen

etree

eens

10,11

METHOD

OF

ADJUSTMENTS

......

00

cece

ec

cee

cece

renee

een

e

een

erent

ene

e

tenet

nee

erent

12

BLOCK

AND

LEVEL

DIAGRAM

.......-

fe

ein

th

ek

acta

anata

tye

aoead

aailiverahinata

Axe

daRae

atte

aS

iis

8

esraele

a

aabax

MiSs

13

SEMICONDUCTORS

<ceeiccaccvs

suis

smandcwsinauune

soma

eau MEe

ewe

bat

epiane

sels

eurie

awa

a

hue

eating

sun

e's

14,15

PRINTED

WIRING

BOARD

........0.

0c

cece

cence

een

ne

renee

b

nen

nee

e

eee

n

tenn

ene enn

eenes

16~19

NOTE

FOR

PARTS

LIST

2c...

cco

sé

cateesvere

sc

pack

gc

ae

ey

ieco

cases

du

aapsad

lel

eieun

Penne

POGWY

ES

RUA

EL

TR

EAM

OFS

20

PARTS

LIST

OF

P.W.B.ASS'Y

....cccc

ces

ec

sews

ce

cbse

scape

ne

rene

ree

wea

ensaeenenseeen

ence

ntee

dy

20-25

PNALO2

SER

oe.

sceccc

vee

x

chiar:

Grbsttin

+

a

ueaectitegiile

Sig's

o

Pea

ESA

ARE

RSE

ERR

TNT

Contes

sihested

adecaaeetete

aac

a

20~23

PUMASZOSR

om

ios

cic

sc

tewco

cece

p

gine

5

wid

ls

oe

Mela

Casa

dad

ans

wR

PME

EES

S

COLTS

WEE

Saye

eee)

Meade

sett

23~25

EXPLODED

VIEW

OF

CHASSIS

AND

CABINET,

PARTS

LIST

OF

EXPLODED

VIEW

..........-002

005s

es

26~29

PRAA

GDB

oc

otc

cck

case’

soc

sus

sed

Sia

BE

RGN

eS

wes

ee

waa

aroha

lee

BAG

UES

FAW

eae

Suscncal

os

Ad

si

inder

Sc

deudl

ao

eT

NS

26,27

PRAASFOSER

ces

cuss

es

sittin

bane

e

coedss

bo

sets'sloibiuniva

a

Gita

vied

8A

3

Wate

SME

a

SY

eres

a

ae

a

ace

6

aeeyh

coed

&

ls

gone

aad

28,29

WIRING

DIAGRAM

..............--65

ot

sates

te

diy

wi

ddnon

Baki

Ronee

kth

s

USexe

reas

ys

SER

TNST

aie

aE

eo

we.

30

SCHEMATIC

DIAGRAM

.......0.

0c

e

cece

nec

cece

eee eee

eet

e

eee

beeen

eee

n

ence

een

nese

teens

31-34

PIMASQDBR

sche

cccdice

cco

tes

2

baited

mcidneys

Oosnigs

a

Genesee

parsed

Ad

ig

ie

ee

ROSS

RG

Boe

PEM

ee

pp

31,32

PRA

ASIDES

PR

cess

so

cbt.

nd

sce

4

gu

eden

unea

hte

be

eaten

Meh

ene

tea

e

uae

Pine

gidegtd

hadsann.

tne

sons

ANNA

SOS

Be

SD

33,34

NIPPON

COLUMBIA

CO.

LTD.

CAUTION

RISK

OF

ELECTRIC

SHOCK

DO

NOT

OPEN

CAUTION:

TO

REDUCE

THE

RISK

OF

ELECTRIC

SHOCK,

DO

NOT

REMOVE

COVER

(OR

BACK).

NO

USER

SERVICEABLE

PARTS

INSIDE.

REFER

SERVIC-

ING

TO

QUALIFIED

SERVICE

PERSONNEL.

The

lightning

flash

with

arrowhead

symbol,

within

an

equilateral

triangle,

is

in-

tended

to

alert

the

user

to

the

presence

of

uninsulated

“dangerous

voltage”

within

the

product's

enclosure

that

may

be

of

sufficient

magnitude

to

constitute

a

risk

of

electric

shock

to

persons.

The

exclamation

point

within

an

equilateral

triangle

is

intended

to

alert

the

user

ta

the

presence

of

important

operating

and

maintenance

(servicing)

instructions

in

the

literature

accompanying

the

appliance.

WARNING:

TO

REDUCE

THE

RISK

OF

FIRE

OR

ELECTRIC

SHOCK,

DO

NOT

EXPOSE

THIS

APPLIANCE

TO

RAIN

OR

MOISTURE.

@

FOR

U.S.A.

&

CANADA

MODEL

ONLY

CAUTION

TO

PREVENT

ELECTAIC

SHOCK

DO

NOT

USE

THIS

(PO-

LARIZED}

PLUG

WITH

AN

EXTENSION

CORD,

RECEPTACLE

OR

OTHER

OUTLET

UNLESS

THE

BLADES

CAN

BE

FULLY

IN-

SERTED

TO

PREVENT

BLADE

EXPOSURE

@

POUR

LE

MODELE

CANADIEN

UNIQUEMENT

ATTENTION

POUR

PREVENIR

LES

CHOCS

ELECTRIQUES

NE

PAS

UTILIS-

ER

CETTE

FICHE

POLARISEE

AVEC

UN

PROLONGATEUR

UNE

PRISE

DE

COURANT

OU

UNE

AUTRE

SOATIE

DE

COU-

RANT,

SAUF

SI

LES

LAMES

PEUVENT

ETRE

INSEREES

A

FOND

SANS

EN

LAISSER

AUCUNE

PARTIE

A

DECOUVERT.

DECLARATION

OF

CONFORMITY

We

declare

under

our

sole

responsibilty

that

the

product

premain

Amputier

PMA-925R/

725A

10

which

this

declaravon

relates

is

in

contormity

with

the

follow:

ing

standards

£N5S013,

EN55020,

ENG0555-2

and

EM60555-3

UBEREINSTIMMUNGSERKLARUNG

Wir

erklaren

unter

unserer

Verantwortung,

dag

das

Produkt

Vor-Hauptverstarler

PMA-925R/

725R,

aul

das

sich

diese

Erklarung

bezeht,

den

folganden

S:ac

daras

eatspricnt

ENS$013,

EN55020,

ENG0555-2

und

EN60555-3

DECLARATION

DE

CONFORMITE

Nous

declarons

sur

notre

seule

responsabiliie

que

l'appareil

Ampéf.catear

PhIA-925R/725R

auquel

se

raféra

cette

déclaration

est

conforme

aux

slanaascs

suivants:

EN55013,

€N55020,

ENG0555--2

et

ENG0555-3.

DICHIARAZIONE

DI

CONFORMITA

Dichiariamo

con

piana

responsahilita

che

it

prodotto

ampiiicatore

di

precedenza

PMA-925R/725R,

al

quale

questa

dichiarazione

si

rifensce,

@

conforme

ale

seguenti

normative:

€NS55013,

EN58020,

EN60555-~2

e

ENG0555-3,

DECLARACION

DE

CONFORMIDAD

Declaramos

bajo

nuestra

unica

responsabilidad

que

e!

producto

precedente,

el

Amplificador

PMA-925R/725R,

al

que

esta

declaracion

hace

referencia,

es

conforma

con

los

siguientes

estandares:

EN55013,

EN55020,

EN60555-2

y

EN60555-3

EENVORMIGHEIDS

VERKLARING

Wit

verklaren

urlsluitend

op

onze

verantwoordelikheid

dat

het

produkt

waarop

deze

verklaring

betrekking

heeft,

de

voorversterker

PMA-925R/

7258,

in

over-

Benstamming

is

met

de

volgende

normen

ENS55013,

EN55020,

EN60555-2

en

EN60555-3.

OVERENSSTAMMELSESINTYG

Harmed

intygas

hell

pd

eget

ansvar

att

produkten,

{érforstarkare

/

slutsteg

PMA~925R

/725R,

vilken

detta

intyg

hanvisar

tit

uppiylier

féljande

standarder

EN65013,

EN55020,

EN60555-2

och

EN60555-3

DECLARAGAO

DE

CONFORMIDADE

Declaramos

sob

nossa

exchisiva

responsabitidade

que

o

produto

pre

Aiiphicador

Principal

PMA-925R/725R

ao

qual

esta

declaragao

corresponde,

esta

en”

contormidade

com

as

sequintes

normas:

END5O1G, EN9S020,

ENGOSIS-2

@

ENGQ555-3

6A.

10

1

FOR

U.S.A.

MODEL

ONLY

SAFETY

INSTRUCTIONS

Read

Instructions

—

All

the

safety

and

operating

instruc-

12,

tions

shouid

be

read

before

the

appliance

is

operated.

Retain

Instructions

-

The

safety

and

operating

instruc-

tions

should

be

retained

for

future

reference.

Heed

Warnings

-

All

warnings

on

the

appliance

and

in

the

operating

instructions

should

be

adhered

to.

14

Follow

Instructions

-

All

operating

and

use

instructions

should

be

followed.

15.

Water

and

Moisture

-

The

appliance

should

not

be

used

near

water

-

for

example,

near

a

bathtub,

washbowi,

16

kitchen

sink,

laundry

tub,

in

a

wet

basement,

or

near

a

swimming

pool,

and

the

like

Carts

and

Stands

-

The

appliance

should

be

used

only

with

a

cast

of

stand

that

is

recommended

by

the

manufacturer.

An

appliance

and

cart

combination

should

be

moved

with

care.

a

Quick

stops,

exces-

i,

|

sive

force,

and

uneven

surfaces

may

cause

A

\

7

the

appliance

and

cart

Ta

=

combination

to

overturn.

—_

Wall

or

Ceiling

Mounting

-

The

appliance

should

be

18,

mounted

to

a

wall

of

ceiling

only

as

recommended

by

the

manufacturer

Ventilation

-

The

appliance

should

be

situated

so

that

its

19.

location

or

position

does

not

interfere

with

its

proper

ven-

tilation.

For

example,

the

appliance

should

not

be

si-

tuated

on

a

bed,

sofa,

rug,

or

similar

surface

that

may

block

the

ventilation

openings;

or,

placed

in

a

built-in

installation,

such

as

a

bookcase

or

cabinet

that

may

im-

pede

the

flow

of

air

through

the

ventilation

openings

Heat

-

The

appliance

should

be

situated

away

from

heat

sources

such

as

radiators,

heat

registers,

stoves,

or

other

apptiances

{including

amplifiers)

that

produce

heat.

Power

Sources

-

The

appliance

should

be

connected

to

&

power

supply

only

of

the

type

described

in

the

operat-

ing

instructions

or

as

marked

on

the

appliance.

Grounding

or

Polarization

—

Precautions

should

be

taken

so

that

the

grounding

or

polarization

means

of

an

ap-

pliance

is

not

defeated

FIQURE

A

EXAMPLE

OF

ANTENNA

GROUNOING

‘AS

PER

NATIONAL

ELECTRICAL

CODE

ANTTNE,

ceaam

wre

ANIENHS,

DISCHARGE

UNI

WHEE

SEC

TRO

619-20:

Recta

SERY

EQUIP

ENT

GAQUNDING

CO*

WHET

SECTION

810-2

HES

~

HATONAL

ELECTRICAL

COOE

20.

Power-Cord

Protection

-

Power-supply

cords

should

be

routed

so

that

they

are

not

likely

to

be

walked

on

or

pinched

by

items

placed

upon

or

against

them,

paying

particular

attention

to

cords

at

plugs,

convenience

recep-

tacles,

and

the

point

where

they

exit

from

the

appliance.

Cleaning

~

The

appliance

should

be

cleaned

only

as

rec-

ommended

by

the

manufacturer.

Power

Lines

~

An

outdoor

antenna

should

be

located

away

from

power

lines.

Outdoor

Antenna

Grounding

~

if

an

outside

antenna

is

connected

to

the

receiver,

be

sure

the

antenna

system

is

grounded

so

as

to

provide

some

protection

against

voltage

surges

and

built-up

static

charges.

Article

810

of

the

National

Electrical

Code,

ANS|/NFPA

70,

provides

in-

formation

with

regard

to

proper

grounding

of

the

mast

and

supporting

structure,

grounding

of

the

lead-in

wire

to

an

antenna-discharge

unit,

size

of

grounding

conduc-

tors,

location

of

antenna-discharge

unit,

connection

to

grounding

electrodes,

and

requirements

for

the

ground-

ing

electrode.

See

Figure

A.

Nonuse

Periods

~

The

power

cord

of

the

appliance

should

be

unplugged

from

the

outlet

when

left

unused

for

a

long

period

of

time.

Object

and

Liquid

Entry

-

Care

should

be

taken

so

that

ob-

jects

do

not

fall

and

liquids

are

not

spilled

into

the

encto-

sure

through

openings

Damage

Requiring

Service

-

The

appliance

shouid

be

serviced

by

qualified

service

personnel

when:

A

The

power-supply

cord

or

the

plug

has

been

dam-

aged;

or

8.,

Objects

have

fallen,

or

liquid

has

been

spilled

into

the

appliance;

or

Cc.

The

appliance

has

been

exposed

to

rain;

or

D.

The

appliance

does

not

appear

to

operate

normally

or

exhibits

a

marked

change

in

performance;

or

€.

The

appliance

has

been

dropped,

or

the

enclosure

damaged.

Servicing

-

The

user

should

not

attempt

to

service

the

ap-

pliance

beyond

that

described

in

the

operating

instruc-

tions.

All

other

servicing

should

be

referred

to

qualified

service

personnel.

ge

PERES

TENS

eT

Raee

el

HSeZ/Hesee-vWc

wee

NOTE:

}.

Always

keap

the

POWER

switch

on

the

main

unit

turned

on.

2.

Turn

the

power

on

and

off

from

the

ramoate

contol

unit

3,

Unplug

the

power

cord

when

you

do

not

plan

to

use

the

unt

for

along

period

of

ume.

CAUTION:

tf

only

the

MUTE/STANDBY

LED

is

lit,

this

means

that

the

power

is

tuned

off

from

the

remote

control

unit.

Turn

the

power

on

from

the

ra-

mote

contro!

unit

HINWEIS:

1.

Lassen

Sie

den

Netzschalter

(POWER)

am

Hauptgerat

stets

eingeschaltet,

2.

Schalten

Sie

den

Strom

mit

dam

Fernbedienungsgerat

ain-und

aus.

3.

Trennen

Sie

das

Netzkabet

vom

Netz

ab,

wenn

Sie

beabsichtigen,

das

Gerat

iiber

einen

langeren

Zaitraum

hinweg

nicht

zu

benutzen.

VORSICHT:

Wenn

nur

das

Stunimschalt-/Bereitschalts-LED

(MUTE/STANDBY)

lauchtet,

$0

bedeutet

dies,

dat

der

Strom

vom

Fernbedienungsgerat

aus

ausgaschaltet

worden

ist.

Schaltan

Sie

den

Strom

vom

Fernbedienungs-

gerat

aus

ain

REMARQUE:

1.

S‘assurer

que

le

commutateur

d’alimentation

(POWER)

sur

l'unite

principale

Sort

toujours

dans

fa

position

activéee.

2.

Allumer

et

ateindre

l'apparerl

avec

{a

télécommande.

3.

Debrancherle

cordon

d'alimentation

lorsque

l'appareil

ne

sera

pas

utilisé

pen-

dant

une

longue

période

ATTENTION:

Si

seul

le

temoin

(LED}

de

sourdine/veile

(MUTE

/STANOBY}

est

allurna,

cela

signitie

que

l'appareil

est

mis

hors

circuit

parla

tétécommande

Alla

myer

l'appareil

avec

la

télecommanda.

NOTA:

1,

Tenere

sempre

l'interruttore

detla

corrente

POWER}

detl’unita

principale

nella

posizione

di

attivazione.

Accendets

e

spegnete

la

corranta

usando

4

telecomando.

2.

3.

Scollegate

il

filo

di

alimentazione

quando

avete

intenzione

di

non

usare

lappa:

fecchio

per

uA

lingo

periodo.

AVVERTENZE:

Se

sono

illuminati

solo

i

LED

di

attenuazione/attesa

(MUTE

/

STANDBY},

quasto

significa

che

la

corrente

e”

stata

spenta

con

tt

telecomando.

Riac-

cendete

la

corrente

usando

1!

telecomando.

PRECAUTIONS

FOR

INSTALLATION

Leave

at

feast

10cm

of

space

between

this

unit

and

any

other

component

placed

above.

SICHERHEITSMASSNAHMEN

BEIM

EINBAU

Lassen

einen

Mindestabstand

von

10

cm

zwischen

diesem

Gerat

und

der

ande-

ran

Komponente,

die

darautgestellt

wird.

PRECAUTIONS

D'INSTALLATION

Prevoir

un

espace

d’au

moins

10cm

entre

l'unité

et

tout

autre

apparel

se

trouvact

au-dessus.

PRECAUZIONI

PER

LINSTALLAZIONE

Lasciate

uno

spazio

libero

di

almeno

10

cm

fra

quest’

umita

e

qualsias:

altro

campe-

nente

che

&

collocato

sopra

la

siessa

NOTA:

+.

Mantanga

siempre

activado

el

nterruptor

da

alimentacion

(POWER)

eri

ia

uns-

dad

principal.

Encienda

y

apague

el

equipo

desde

la

unidad

de

control

remoto.

Cuando

la

unidad

vaya

a

estar

tuera

de

uso

por

un

periodo

pralongado

de

tiem-

po,

desconecte

el

cable

de

alimentacién

PRECAUCION:

P

Cuando

sdlo

el

indicador

LED

de

silenciamiento/modo

de

espera

(MUTE/STANDBY)

esté

encendido,

significard

que

la

alimentacidn

a

unidadha

sido

desconectada

desde

la

unidad

de

control

remoto.

Conecte

ta

almentacién

desde

la

unidad

de

control

remoto.

2

3.

OPMERKING:

1.

Zorg

er

altijd

voor

dat

de

straomschakelaar

(POWER)

van

het

hoofdtoestel

in

da

ingaschakelde

stand

staat.

2.

Schakel

de

stroom

in

en

uit

m

b.v.

de

afstandsbediening.

3.

Trek

het

netsnoer

uit

wanneer

u

denkt

het

toestal

gedurende

een

lange

perio-

de

niet

te

gebruiken.

WAARSCHUWING:

Indien

enkel

de

dampings-(MUTE}/

STANDBY

LED

brandt,

betekent

d.t

dat

de

spanning

met

de

afstandsbediening

is

uitgaschakeid.

Schakel

de

spanning

in

met

de

afstandsbediening,

OBSERVERA:

1.

Lat

alitid

strombrytaren

(POWER)

pa

huvudenheten

vara

paslagen.

$a

tll

/fran

strommen

med

hjalp

av

fjarrkontroilen.

Koppla

toss

natkabein

om

apparaten

inte

skati

anvandas

under

ldag

tia.

or

VARNING:

Om

endast

MUTE

/STANOBY-tampan

lyser

betyder

det

att

sttémmen,

har

stingts

av

via

fjarrkontrollen.

Strommen

maste

da

slas

pa

via

f)3°-

kontrailen

igen.

NOTA:

1.

Mantenha

o

intesruptor

da

Corrente

(POWER)

na

unidade

principal

sempre

ligado.

2.

Ligue

e

desligue

a

corrente

a

parti

da

unidade

de

controlo

remota.

3.

Desconecte

o

fio

de

forca

quando

intentar

nao

utilizar

a

unidade

po:

lorgo

tempo.

$

CAUTELA:

Se

apenas

se

iluminar

0

LED

de

surdina/aspera

(MUTE

/

STANDBY).

1s:0

signitica

que

a

forga

s@

desligoua

partir

do

controle

remota.

Ligue

a

forca

2

partir

do

Controle

ramoto

a:

1.

EHR

AYPOWER

(

BiG

)

WAL

TLRS

>

2.

HIRES

BEAR

AER

ZB

A

°

3

A

RAST

SER

BF

TY

AS

HB

HH HR

BRAK

Fo

eR:

#7

FF

MUTE/STANDBY

LED{S

MIE

MRE

WRG

a

TEES

BR

APA]

©

H

Ge

Hde

FE

BE

DL

ALI

PRECAUCIONES

PARA

LA

INSTALACION

Deje

por

lo

menos

10

cm.

de

espacio

entre

esta

unidad

y

cualquier

otro

compo-

nente

situado

sobre

ella

VOORZORGSMAATREGELEN

Bij

plaatsing

dient

u

een

ruimte

van

minstens

10

cm

open

te

laten

tussen

ai

toe-

stel

an

sen

ander

erop

gepiaatst

komponent.

FORSIKTIGHETSATGAROER

VID

INSTALLATIONEN.

Se

till

att

det

finns

minst

10.

cm

melianrum

mellan

apparaten

och

en

ev.

annan

ap-

parat

som

stalis

ovanpa

CUIDADOS

NA

INSTALACAO

Deixe

um

espaco

de

pelo

manos

10

cm

entre

esta

unidade

@

qualquer

autre

fom-

ponente

colocado

acima.

RATE

AAS

b

TERA

GS

A

ED

10M

>

wivales

aN

‘tr

30cm

or

more

10cm

oder

mehr

10cm

ou

plus

lcm

o

pil

1Oem

0

pis

10cm

of

meer

10cm

eller

mer

cm

ou

mais

VOM

Va

Avoid

high

temperatures.

Atiow

for

sulficient

heat

dispersion

when

instaited

on

a

rack.

Vermaiden

Sie

hohe

Temperaturen

Beachten

Sie,

daB

eine

ausreichend

Luftzirku-

lation

gewanhrieistet

witd,

wenn

das

Gerat

auf

ain

Ragal

gestelit

wird.

Eviter

des

termpératures

élevées,

Tenu

compte

d'une

dispersion

de

cha'eur

suft-

sante

iors

de

t'instalation

sur

une

étagere

Evutate

di

asporre

Cunild

a

temperature

alte

Assicuratevi

che

Ci

Sia

un

acteguata

dispe'sio-

ne

del

calare

quando

installate

{va

1a

nun

ro:

bile

per

Componenti

Budo.

Evite

altas

tamperaturas

Parmite

la

Suticiente

dispersion

dei

ctor

cusn-

do

esta

instalado

en

la

consola

Vermyd

noge

temperaturen.

Zorg

voor

een

degalk

nitteafvoer

noien

het

apparaat

op

een

ek

wordt

geplaalst

Urduik

hogs

temperaturer

Se

tl

att

det

Linas

mo,yher

tl

god

varnea-

viednng

v.d

momtering

+

ett

rack

Evite

1emperaturas

atlas

Conceda

suficiente

dispersdo

de

calor

quando

©

equipamente

for

instalado

numa

prateleia.

Handle

the

power

co’d

carefully.

Hold

the

plug

when

unplugging

the

cord.

Genen

Sie

vorsichtig

mit

dem

Netzkabdei

um.

Halten

Sie

das

Kaba!

am

Stecke:.

wenn

Sie

den

Stacker

herausz

ehen

Manipuler

la

cordon

d'alimentation

avec

pre-

caution

Tens

ta

prse

lors

du

débranchement

du

cor-

don

Manneggiate

1!

{ito

di

aumantazione

con

cura.

Agite

per

la

spina

quando

scollegate

#

cavo

dal

a

presa.

Maneje

el

cordon

da

energia

con

cuidedo

Sostenga

el

enchule

cuando

desconecte

él

cardéa

de

energa.

Hanteer

nat

netsnoer

voorz:cntig

Ho.

het

snaer

bij

de

stekker

vast

wanneer

de-

ze

moet

worden

aan-

of

losgehoppald.

Hantera

nathabein

varsami

Hall)

kavein

nar

den

kopplas

[ran

ei~uttagel

Manusee

com

cundado

o

fic

cond.tor

de

ener-

93

Sagu’e

a

tomas

ao

desconectar

o

ho.

Keep

the

set

free

from

moisture,

water,

and

dust

Halian

Sie

das

Gerat

von

Feuchtigkeit,

Wasser

und

Staub

fern.

Proiager

l'appare!

conte

Vhumidité,

|‘eau

et

la

poussiére.

Tenate

funita

lontana

dal'umidita,

dall’acqua

@

dalla

poivere

Mantenga

el

equipo

bre

de

humadad,

agua

y

poivo

Laat

geen

vochtigneia.

water

of

siof

in

het

ap-

paraat

b:nnend‘ingen

Utsatt

inte

apparaten

far

fukt,

vatten

och

damm.

Mantenha

o

apavelho

wvra

de

qualquer

umida-

Ge,

aqua

ou

poera

SE

|

Unplug

ine

power

cord

when

not

using

the

set

for

long

periods

of

te

Wenn

das

Gerat

ene

langere

Zeit

nich}

ver-

wendel

werden

so'l,

Irennen

Sie

das

Netzka-

bel

vom

Netzstacke’

Oebrancher

le

cordon

d’almentation

lorsque

lappareit

n'est

938

utlise

pendant

de

longues

périodes

Cisinnastate

ut

filo

di

alimentazione

quando

avete

lintenzione

di

non

usare

il

filo

di

alimen-

tazione

per

un lungo

perodo

Gi

tempo.

Desconecte

el

cordén

de

energia

cuando

no

utilice

el

aquipe

por

Mucho

tiempo.

Neem

altijd

net

nets-oer

uit

het

stopkontakt

wanneer

het

apparaat

gedurende

een

lange

periode

net

wordt

gedruikt.

Koppia

ur

natkabein

om

apparaten

inte

kom

mer

all

anvdngas

1

f3ng

1d.

Desiigua

0

fio

condstor

de

forga

quando

0

api

relno

ndo

wer

que

Se

usado

por

um

longo

pe

iodo,

‘(For

sets

with

vent

lation

holes)

Do

not

opsizuct

the

vertuation

holes.

Die

Beluftungsoffaunge

durfen

nicht

ver-

deckt

werden

Ne

pas

obstruer

les

trois

d'aération.

Non

coprite

i

for

d.

venti

szione.

No

obstruya

los

ori!

cians

de

ventilacién.

De

ventistieoperngen

mogen

niet

worden

pebiokkeerd.

Tapp

inte

wll

vant:

aronsoppringarna.

Nao

opsirua

os

o°.ficics

cle

ventilagao.

NOTE

ON

USE

/HINWEISE

ZUM

GEBRAUCH

/

OBSERVATIONS

RELATIVES

A

UUTILISATION

NOTE

SULL'USO/NOTAS

SOBRE

EL

USO

/

ALVORENS

TE

GEBRUIKEN

/

OBSERVERA

OBSERVACOES

QUANTO

AO

USO

Do

not

lat

foreign

objects

in

the

set.

Keine

(ramden

Gegenstande

in

das

Gerat

kommen

lassen.

Ne

pas

laisser

des

objets

strangers

dans

I'ap-

pareil

E*

importante

che

nessun

aggetto

&

insento

alt'interno

dall‘unita.

No

deje

objetos

extranos

dentro

del

equipo.

Laat

geen

vreemde

voorwerpan

in

git

apparaal

vallen.

Se

till

att

frammande

foremal

inte

tanger

in

1

apparaten.

Nao

daixe

objetos

esiranhos

no

aparelho,

Do

not

tet

insecticides,

benzena,

and

thinner

come

in

contact

with

the

set

Lassen

Sie

das

Gerdt

nicht

mit

Insektiziaen,

Banzin

oder

Verdiinnungsmuteln

in

Berishrung

kommen

Ne

pas

mettre

en

contact

des

insecticides,

du

benzene

et

un

diluent

avec

\'appareil,

Assicuratewi

che

I'unita

non

venga

in

contatto

con

insetticidi,

benzoio

o

solvanti

No

permita

el

contacto

de

insecticidas,

gasoli-

na

y

diluyentes

con

el

equipo.

Laat

geen

insektenverdelgende

middelan,

banzine

of

verfverdunner

mat

dit

apparaat

in

kontakt

komen:

So

till

att

inte

insektsmedei

pa

spraybruk,

ben

sen

och

thinner

kommer

i

kontakt

med

appara-

tens

holje.

Néo

parmita

que

inseticidas,

benzina

@

disso

vente

anteem

am

contacto

com

0

aparetho.

>

a8

$

,

Never

disassemble

or

modily

tha

set

in

any

way.

Versuchen

Sie

niemals

das

Gerat

auseinander

zu

nehmen

oder

auf

jegliche

Ant zu

verandern

Ne

jamais

damonter

ou

modifier

(appared

d'une

maniére

ou

d'une

autre.

Non

smontate

mai,

n@

modihicate

Funita

+

nessun

modo.

Nunca

desarme

0

modifique

el

equipo

de

nin-

guna

manera.

Noort

dit

apparaat

damonteran

of

op

andere

wijze

modifieran,

Ta

inte

iss

apparaten

och

forsok

inte

bygga

ory

den

Nunca

desmonts

ou

modilique

o

aparalno

ae

alguma

forma.

BS

SSS

L/S

SS

Nk

aaa

ea

a

ET

FRONT

PANEL

FRONTPLATTE

PANNEAU

AVANT

PANNELLO

ANTERIORE

nea:

REAR

PANEL

RUCKWAND

PANNEAU

ARRIERE

PANNELLO

POSTERIORE

3B

@

CARTRIDGE

|®

GND

@®

PHONO

U.S.A,

CANADA,

TAIWAN

A.0.C.

Model

Modell

fir

USA,

KANADA,

TAIWAN

R.O.C

Modale

pour

U.S.A.,

CANADA,

TAIWAN

R.0.C

Modello

per

i

Stati

Uniti,

|

CANADA

@

TAIWAN

Kibet

=

i

GAC

MRO.

Be

@

for

U.K.)

©

Modell

fiir

Europa,

Asian

&

Hong

Kang

fauBer

GroBbritannian).

Europe,

Asia

&

Hong

Kong

model

(except

®

Modéle

pour

Europe,

Asie

et

Hongkong

(sauf

Royaume-Uni)

©

—Modbalio

per

I’Europa,

I'Asia

@

Hong

Kang

{all’infuori

dai

Regno

Unitot.

@®

CD.

TUNER,

AUX

©

BRAN

SR

AR

REG

(DRS)

Fig.

4

Abb.

1

it

@

SPEAKERS

@

DAT/TAPE-1,

DAT/TAPE~2

TAPE

PB

@

TAPE

REC

Selector

Switch

Canndge

GND

Phona

Input

Terninais

(Pronot

tnput

Tererinals

(CO,

TUNER.

AUXI

Playback

and

Recording

Terminats

©

Playback

Tereninals

®

Recording

Torminals

Speaker

Terminals

solenane

cartuccia

|

each

_{

am

Es

Phono

1

Tonapnehmer-

GND

lipiattenspieler-

Eingangsbuchsen

Tonband-Ein

/Ausgange

Lautspracher—

Wahtschaiter

Eingargsbuchsen

(CO.

TUNER,

AUX)

©

Wiedergabe

klemmen

‘

(Prone

©

Autnahme

Solecteur

de

GND

Rores

deetse

Bornes

a

Bornes

de

leciure

e1

d'enregistrement

Bornes

de

naut-

coliute

(pharat

iCD.

TUNER,

©

Bornes

de

lecture

parieurs

©

Bornas

denragistrement

Intetruttore

i

GND

Termmnah

a

irgresso

Terminal

sh

fiproduzione

registrazione

Yerminaki

©

Terminal

ch

npraduzione

©

Terminal

ot

registrazione

Wha

Aga,

fF

SHAS

AK

SOS.

MEME

|

LES

ee

Ane

-

AGE

MS.

degli

altopariant:

BE

OE

BE

am

F

6

CONNECTIONS

ANSCHLUSSE

CONNEXIONS

CONNESSIONI

Record

Player

itor

MC.

MMi

Plattenspiele:

itie

MC.

MAS!

Tourne—D'sque

ipour

MC,

MM)

Giradischi

(pes

MC.

MMj

SF SR

PR

he

ait

Speaker

System

(A)

Boxenpaar

(A)

Systeme

de

Haut-Parieurs

(Ai

Sistema

di

altoparlanti

(A)

MHRA)

Speaker

System

iB}

Bdxenpaar

18)

Systeme

de

Haut-Parteurs

(8)

Sistema

di

altoparianti

(8)

$8

33

KKB)

BEAK

=

reareeuneney

a

:

Ground

Wue

L

S—

Erdungstabel

>

F4

de

Masse

Filo

di

massa

.

waa

Sennateceners,

CO

Player

outputs

CO-Spister

a

Lecteur

CD

{

Q

Gi

p>

Lenore

CO

wn

CDS

j—LINE

IN

Tuner

(REC)

Tuner

TPUT:

Sistoniezatoro

ours

LINE

aan

gad

/OUT

caE@

Pi

=

ee

Power

Cord

a

Netzkabel

°

Cordon

d’alimentation

AA AA

a

di

alimentazione

Video

Dock

ISouna

Outl

Bs

tape

Deck

2

Videorekorder

(Audio-Ausgarg

Cassetten

Deck

2

Magnétoscope

‘Sortie

son!

Auoio

(2)(0) (2)(0)

Mapdcoteee

é

Videoregistratore

(uscita

su0!

a!

Mao

}

BERR

AM)

oureuts

eure.

ig

ee?

[eer

O|

See)

Tape

Deck

1

LINE

IN

Casseiten

Deck

3

(REC)

Magnétophone

1

WAG

Piast

a

cassette

1

OE

7

Fig.

2

end

Abb,

2

(fe

0

|

m2

SPEAKER

TERMINAL

LEFT

SPEAKER

LAUTSPRECHEASUCHSEN

LINKER

LAUTSPRECHER

BORNES

OF

HAUT-PAR.EURS

MAUT-PARLEUR

GAUCHE

TEAMINALE

DEGLI

ALTOPARLANT:

=

ALTOPAHLANTE

SINISTRO.

wae

aT

eM

2

bwintre

wee

shane

3

.oonen

Ime

spaakes

tema,

stent

Oo

2

1

BOARS

‘

a

wos

2

HveaES

Fig.

3

1

MAH

fee

if

Abb.

3

SENG

A

RoE.

=.

Aa

Eee

SSS

LHSSe

vil

EER

DESIGNATIONS

AND

FUNCTIONS

OF

PANEL

CONTROLS

0

NN}

POWER

(Power

Switch)

When

the

power

switch

is

turned

ON

(

-=

),

the

MUTE/STAND-

BY

LED

@

lights.

When

the

power

switch

is

turned

ON,

power

is

supplied

to

the

unit.

It

takes

a

few

seconds

after

the

power

is

turned

on

for

the

unit

to

warm

up.

This

is

due

to

the

built-in

muting

circuit

that

eliminates

noise

during

the

on/off

operation.

-

PHONES

(Headphone

Jack)

This

jack

is

used

to

plug

in

the

headphones.

SPEAKERS

(Speaker

Selection

Switch)

The

PMA-925R/725R

can

be

connected

to

two

speaker

sys-

tems:

speaker

system

A

and

speaker

system

B.

When

A

is

pressed,

the

speaker

system

connected

to

speaker

output

terminals

A

operates,

When

B

is

pressed,

the

speaker

system

connected

to

speaker

output

terminais

B

operates.

When

A

and

B

are

pressed

on

together,

bath

speaker

systems

operate

simultaneously,

When

the

A

and

B

switches

are

both

off

tin

the

out

position},

there

is

no

output

from

the

speaker

termi-

nals.

This

setting

is

used

to

listen

to

playback

through

the

head-

phones.

LOUDNESS

(Loudness

Switch)

When

the

volume

is

low,

itis

difficult

for

the

human

ear

to

clearly

distinguish

notes

in

the

low

and

high

frequency

ranges.

The

loud-

ness

switch

allows

a

simple

“one-touch”

correction

of

this

diffi-

culty.

Press

the

loudness

switch

ON

(

-«.

)

when

listening

to

mu-

sit

at

a

low

volume.

The

low

notes

and

high

notes

will

be

corrected

to

produce

a

natural

sound.

BALANCE

(Balance

Control)

This

knob

is

used

to

adjust

the

balance

between

the

left

and

right

channels.

When

it

is

set

to

the

center

position,

the

amplitude

of

the

amplifier

is

equal

on

both

sides.

It

there

is

a

difference

in

the

feft

and

right

channel

output

voltages

for

a

cartridge,

move

the

knob

to

the

left

and

the

right

to

adjustit.

If

the

volume

on

the

right

side

is

too

low,

turn

the

knob

to

the

right

(

“¥

).

If

the

volume

on

the

left

side

is

too

low,

turn

the

knob

to

the

left

(

#

).

This

wilt

achieve

an

even

balance

on

the

left

and

right

sides.

VOLUME

(Volume

Control)

This

knob

controls

the

overall

volume

level.

Turn

the

knob

to

the

night

(

“¥

}

to

raise

the

volume

and

to

the

lett

(#7

)

to

lower

it.

BASS

(Bass

Control)

This

knob

is

used

to

control

the

bass

quality

of

the

sound.

\When

the

knob

is

set

at

the

center

position,

the

frequency

char-

acteristics

are

flattened

in

the

range

below

1000

Hz.

The

bass

is

emphasized

as

the

knob

is

moved

off

center

to

the

right

(

WwW,

and

reduced

as

it

1s

moved

to

the

left

(#

)

When

volume

contro!

@

is

set

to

the

right

of

the

center

position,

the

effect

of

the

other

controls

1s

reduced:

TREBLE

(Treble

Control}

This

knob

ts

used

to

control

the

treble

quality

of

the

sound

When

the

knob

is

set

at

the

center

position,

the

frequency

char-

acteristics

are

flattened

in

the

range

above

1000

Hz.

The

treble

is

emphasized

as

the

knob

is

moved

off

center

to

the

right

(

¥

},

and

reduced

as

it

is

moved

to

the

teft

(¥

}

When

volume

control

@

is

set

to

the

right

of

the

center

position,

the

effect

of

the

other

controis

is

reduced

SOURCE

DIRECT

(Source

Direct

Switch)

The

controls

(BALANCE,

LOUONESS,

and

TONE)

can

be

used

when

this

switch

is

in

the

OFF

(IL

)

position.

When

set

to

the

ON

(=.

}

position,

the

above

controls

are

by-

passed

and

the

signals

are

input

directly

to

the

volume

control

cifcuit,

providing

high

quality

sound.

REC

OUT

SELECTOR

(Rec

Out

Select

Switch)

Use

this

switch

to

select

the

recording

component.

@

PHONO:

Used

to

recording

from

the

turntable.

e

CD:

Used

to

recording

from

the

CD

player.

@

TUNER:

Used

to

recording

from

the

tuner

@

AUX:

Used

to

recording

component

that

con-

nected

to

the

AUX

terminal.

®

DAT/TAPE-1

p>

2:

Used

to

recording

from

the

tape

deck

connected

to

the

OAT/TAPE-—1

jacks

@

DAT/TAPE-2

}

1:

Used

to

recording

from

the

tape

deck

connected

to

the

DAT/TAPE-2

jacks.

REMOTE

SENSOR

(Remote

Control

Sensor)

This

sensor

receives

the

infra-red

light

transmitted

from

the

wireless

remote

control

unit.

For

remote

control,

point

the

wireless

remote

control

unit

to-

wards

the

sensor.

MUTE

/

STANDBY

LED

This

LEO

flashes

while

the

muting

circuit

is

activated

when

the

power

is

turned

on

and

when

muting

is

turned

on

from

the

re-

mote

control

unit,

and

remains

sit

(without

flashing)

whiie

the

power

is

on.

INPUT

SELECTOR

(Input

Select

Switch)

Use

these

to

select

the

program

source.

When

the

button

for

the

desired

program

source

is

selected,

its

LED

lights.

One

program

source

only

can

be

selected

at

a

time,

as

follows:

@

PHONO:

Used

to

select

the

output

from

a

turstable

that

is

connected

to

the

PHONO

terminal.

Use

the

PHONO

switch

@

(Rear

Panel

Side)

to

switch

the

sensitivity

to

corraspond

to

the

cartridge

type

being

used.

e

co:

Used

to

listen

a

compact

disc

player

or

other

component

that

is

connected

to

the

CD

ter-

minal.

@

TUNER:

Used

to

play

a

component

such

as

an

FM/AM

tuner

or

a

TV

tuner

that

is

connected

to

the

TUNER

terminal

@

AUX:

Used

to

play

a

component

such

as

a

Hi

F:

vid-

0

piayer,

TV

tuner,

8-track

tape

player

or

tape

deck

that

is

connected

to

the

AUX

termi.

nal.

@

DAT/TAPE-1:

Use

this

Position

when

using

the

tape

deck,

etc.,

connected

to

the

DAT/TAPE-1

jacks.

@

DAT/TAPE-2:

Use

this

Position

when

using

the

tape

aeck,

etc.,

connected

to

the

DAT/TAPE-2

jacks.

®

PHONO

(Cartridge

Selection

Switch):

Rear

Panel

Side

This

switch

is

set

according

to

the

type

of

player

cartridge

to

be

used,

@

MC

(-®

|;

Used

when

an

MC

{moving-coil)

cartridge

with

an

output

of

jess

than

0.5

mV

is

used

@

=MM

{=

):

Used

when

an

MM

(moving-magnet)

cartridge

with

an

output

of

2

mV

or

more

is

used.

®

AC

OUTLETS:

Rear

Panel!

Side

@

For

U.S.A.,

Canada,

and

Taiwan

R.O.C.

madels.

AC

outlets

ara

used

for

connecting

amplifier

component

units,

such

as

tuner,

turntable,

tape

deck,

etc.

e@

SWITCHED

(Total

capacity:

120

WI:

These

outlets

are

turned

ON/OFF

when

main

power

switch

and

POWER

button

on

the

Remote

Control

Unit

is

turned

on/off

@

UNSWITCHED

(Capacity:

240

W)

This

outlet

is

always

ON

whether

power

switch

is

on

or

OFF

e@

For

Europe

(except

the

U.K.),

Asia

and

Hong

Kong

mod-

els.

AC

outlets

are

used

for

connecting

amplifier

component

units,

Such

as

tuner,

turntable,

tape

deck,

ete.

@

SWITCHED

{Total

capacity:

100

W):

These

outlets

are

turned

ON/OFF

when

main

power

switch

and

POWER

button

on

the

Remote

Control

Unit

is

turned

on/off.

®@

UNSWITCHED

(Capacity:

100

WI

This

outlet

is

always

ON

whether

power

switch

is

on

or

OFF

OPERATION

PREPARATION

1.

CHECKING

CONNECTIONS

®

Make

sure

that

all

the

connections

are

proper

by

referring

to

the

back

panel.

(Fig.

2,

3)

@

Check

the

polarity

(positive

and

negative)

of

connections,

and

the

directivity

of

stereo

separation

(right

cord

to

right

channel

ter-

minat,

and

left

cord

to

left

channel

terminal).

@

Check

the

directivity

of

cord

connection.

2.

SETTING

OF

EACH

KNOB

@

Turn

the

volume

control

knob

counterclockwise,

to

"0"

@

Set

the

rotary

knob

to

“flat”.

@

Set

SOURCE

DIRECT

and

LOUDNESS

to

“OFF

{

-@.}".

Atter

checking

the

above

items,

turn

on

the

power,

the

amplifie:

is

set

in

the

ready

mode

in

a

few

seconds.

PLAYING

A

RECORD

1.

Set

the

INPUT

SELECTOR

switch

to

“PHONO”.

2.

Operate

the

turntable

and

play

the

record.

3.

Turn

the

volume

and

tone

controls

to

yield

an

appropriate

volume

and

sound

quality.

PLAYBACK

OF CD

PLAYER

1.

Set

the

(NPUT

SELECTOR

switch

to

“CD”.

2.

Operate

the

CD

player.

3.

Turn

the

volume

and

tone

controls

to

yield

an

appropriate

volume

and

sound

quality.

RECEPTION

OF

RADIO

PROGRAMS

1.

Set

the

INPUT

SELECTOR

switch

to

“TUNER”.

2.

Operate

the

tuner

to

receive

a

radio

program.

3.

Turn

the

volume

and

tone

controls

to

yield

an

appropriate

volume

and

sound

quality.

CONNECTIONS

OF

AUDIO

EQUIPMENT

TO

AUX

TERMINALS

1,

Set

the

INPUT

SELECTOR

switch

to

“AUX”

Position,

2.

Operate

the

Audio

equipment

Systems.

3.

Turn

the

volume

and

tone

controls

to

yield

an

appropriate

volume

and

sound

quahty.

PLAYBACK

WITH

TAPE

DECK

1.

Set

the

INPUT

SELECTOR

switch

to

“DAT/TAPE-1"

or

“DAT/TAPE-2",

2.

Operate

the

Tape

Deck.

3.

Turn

the

volume

and

tone

controis

to

yield

an

appropriate

volume.

and

sound

quality.

RECORDING

WITH

TAPE

DECK

1.

Setthe

REC

OUT

SELECTOR

to

the

program

source

you

wish

to

re-

cord.

2.

Start

the

playback

of

the

program

source.

3.

Start

recording

with

the

component

connected

to

“DAT/TAPE-1"

or

“DAT/TAPE-2".

@

in

the

PMA-925R/725R,

the

REC

OUT

signal

and

the

speaker

(headphone)

signal

are

output

via

separate

circuits

so

that

knobs

and

switches

retated

to

the

tone

and

volume

have

no

effect

whatsoever

on

the

sound

that

is

recorded.

Also,

since

the

recording

function

is

selected

by

the

REC

OUT

SELECTOR,

the

free

program

source

can

be

played

through

the

speakers

(or

headphones)

even

during

re-

cording.

®

MONITORING

THE

RECORDING

A

recording

in

progress

can

be

monitored

if

a

tape

deck

with

three

individual

heads

for

recording

and

playback

is

used.

A

tape

deck

in

which

a

common

head

is

used

for

both

recording

and

playback

can-

not

be

used

to

monitor

recording.

When

a

recording

is

being

made

using

DAT/TAPE-1,

selecting

DAT/TAPE-1

with

the

INPUT

SELEC-

TOR

will

engage

tha

RECORDING

MONITOR

and

pemit

a

check

of

the

recording

condition,

CAUTION

Protective

Circuit

This

satis

equipped

with

a

high

speed

protective

circuit.

This

cir-

cuit

protects

the

internal

circuitry

from

damage

due

to

large

cur-

rents

flowing

when

the

speaker

jacks

are

not

completely

con-

nected

or

when

an

output

is

generated

by

a

short

circuit.

This

protective

circuit's

operation

cuts

off

the

output

to

the

speak-

ers.

In

such

a

case,

be

sure

to

turn

the

power

to

the

set

off

and

check

the

connections

to

the

speakers.

Then

turn

the

power

on

again.

After

muting

for

several

seconds,

the

set

will

operate

nor-

mally.

NOTE

@

This

amplifier

has

a

full

memory

back-up

system.

When

the

power

is

turned

on,

INPUT

SELECTOR

@

are

set

to

the

last

mode

set

be-

fore

the

power

was

turned

off

14

eh

Nid

ra

ae

a

na

REMOTE

CONTROL

OPERATION

The

accessory

Remote

Control

Unit

1s

used

to

control

the

amplifier

from

a

convenient

distance.

(1)

Inserting

the

Dry

Celt

Batteries

Notes

on

Battery

Usage

1,

Remove

the

battery

cover

on

the

Remote

Control

Unit.

@

RC-176

uses

the

size

REP

(AA)

dry

cell

batteries.

®@

The

batteries

will

need

to

be

replaced

approximately

once

a

year.

This

will

depend

upon

how

often

the

Remote

Control

Unit

is

used.

©

If,

inJess

than

a

year

from

the

time

new

batteries

were

inserted,

the

Remote

Control

Unit

fails

to

operate

the

Amplifier

from

a

near-by

Position,

it

is

time

to

replace

the

batteries.

©

Insert

the

batteries

properly,

following

the

polarity

diagram

inside

the

battery

compartment.

@

Batteries

are

prone

to

damage

and

leakage.

Therefore:

@

Do

not

mix

new

batteries

with

used

ones.

2.

Insert

two

dry

cell

batteries

as

shown

in

the

diagram

on

the

bat-

@

Do

not

mix

different

types

of

batteries

tery

supply

unit

®@

Co

not

jumper

opposite

poles

of

the

batteries,

expose

then

to

heat,

break

them

open,

nor

expose

them

to

open

fire.

©

Ifthe

batteries

have

leaked,

remove

any

traces

of

battery

flurd

from

the

battery

compartment

wiping

thoroughly

with

a

dry

cloth.

Then

insert

new

batteries

(2)

Directions

for

use

®

Operate

the

Remote

Control

Unit

while

pointing

it

towards

the

Re-

mote

Control

Sensor

on

the

Amplifier

as

shown

in

the

diagram

on

the

left.

©

The

Remote

Controi

Unit

can

be

used

at

distances

up

to

about

8

me-

ters

in

a

straight

line

from

the

amplifier.

This

distance

will

decrease

if

there

are

obstructions

blocking

the

infra-red

light

transmission

or

if

the

Remote

Control

Unit

is

not

directed

straight

at

the

amplifier

Note

on

operation

©

Oo

not

press

the

operating

buttons

on

the

Amptifier

and

the

Remote

Control

Unit

at

the

same

time.

This

will

cause

misoperation,

©

Operation

of

the

Remote

Control

Unit

will

become

less

effective

or

erratic

if

the

infrared

Remote

Control

Sensor

on

the

Amplifier

is

exposed

to

strong

light

or

if

there

are

obstructions

between

the

Remote

Controi

Unit

and

the

sensor.

@

Incase

you

operate

a

VCA,

TV

or

other

components

by

remote

conto!,

do

not

operate

buttons

on

two

different

remote

control

units

at

the

same

time.

This

wilt

cause

misoperation.

Besides

being

able

to

operate

the

PMA-925R/725R

amplifier

with

this

Remote

Control

Unit,

you

can

also

operate

a

DENON

cassette

deck

and

CD

player

from

this

handy

full~system

Remote

Control

Unit.

Remote

control

section

Full-system

Remote

Control

Unit

The

full-system

Ramote

Contro!

Unit

operates

atl

major

functions

of

the

Amplifier,

such

as

function

switching,

volume

control.

But

that’s

not

all!

The

same

controt

pad

can

also

contro!

the

major

functions

of

a

DENON

CD

player

and

cassette

deck

and

tuner

when

combined

with

the

PMA-925R

/725R

to

create

a

remarkably

ergonomic

and

versatiie

DENON

system

with

all

the

quality

sound

reproduction

that

the

devoted

audiophile

expects.

+

12

Remote

Control

Unit

RC-176

supplied

with

the

PMA-925R/725R

©

(POWER)

sutton

This

button

can

be

used

to

turn

on

and

off

the

power

of

the

ampli-

fier.

However,

the

power

for

the

amplifier

turned

on

and

off

if

itis

in

the

power

standby

mode

and

the

power

cord

is

plugged

in

Bic

get

cy

har

This

button

will

not

function

if

there

is

a

power

failure,

if

CoO

mal

a

the

power

cord

is

not

plugged

in,

or

when

using

an

aud.o

KEW

FED

PLAY

timer,

@

=

MUTING

button

ee

Lol

SI

It

-

¥

Pressing

this

switch

will

activate

the

muting

condition

and

no

Seca

Signals

will

be

output

to

the

speakers.

Tare

JaPEy

aux

Other

buttons

Other

buttons

are

exclusively

for

the

PMA-925R/725R.

and

function

in

the

same

way

as

the

corresponding

buttons

on

the

set.

£0

POND

DENON

REMONE

CONTRO,

UNIT

ACITE

»

PLAY

button

<q

PLAY

(REY)

PLAY

(REV)

button

@

stop STOP

button

dq

REW

REWIND

button

FF

>>

FF

button

Reter

to

the

operating

instructions

of

your

it

PAUSE

DENON

tape

deck

&/B

W-DECK

A/B

DECK

SELECT

burton

D>

PLAY

button

@

STOP

button

Revere

ieee

PRESET

¢

buttons

ere

ue

Press

this

button

to

move

up

or

down

among

the

preset

Forward

Track

Station

numbers.

Search

button

Refer

to

the

operating

instructions

‘of

your

DENON

CO

player

PAUSE

button

RANDON

DISC

SKIP

WW

PAUSE

®

The

RC-176

Remote

Control

Unit

can

control

CD

players

and

cassette

decks

manufactured

by

DENON

Note

that

operation

may

not

be

possible

for

some

modeis

*

Buttons

are

conveniently

separated

into

groups,

each

group

Controlling

one

specific

component.

The

groups

are

AMP,

FUNCTION,

CD

,

DECK

and

TUNER

etc

«

For

details

on

operating

other

components.

refer

to

the

operating

instructions

for

the

CD

player

and/or

cassette

deck

CAUTION:

@

If

the

power

is

turned

off

with

the

Remote

Controt

Unit,

the

set

is

switched

to

the

power

stand-by

state.

tf

you

are

absent

for

a

long

period

of

time,

unpiug

the

power

cord.

©

Only

the

MUTE/STANDBY

LED

@

lights

when

in

the

power

stand-by

mode.

@

You

may

experience

erratic

operation

of

the

Remote

Control

Unit

if

it

is

operated

in

fluorescent

light

and

diract

suniight,

in

particular

if

this

light

strikes

the

Remote

Control

Sensor

on

the

Amplifier.

However,

this

is

nota

malfunction,

and

if

this

should

happen,

simply

protect

the

sensor

against

such

light.

13

a

PO

I

Fe

el

es

wuseZ/Uuseec-vWd

Technica!

Data

(typical

vaiue}

T

Technische

Daten

Itypische

werte)

Caractéristiques

techniques

(valeur

caractéristique)

*

POWER

AMPLIFIER

SECTION

Aated

Output

Power:

"Both

channel

driven

(8

Q/otm

Load)

20 Hz

to

20

kHz,

TH.0.0.02%/0.05%

{482/ohm

Load}

DIN,

1

kHz,

THO.

0.7%

*2Continuous

8OW/GSW

per

channel

min

into

8

Q/ohms,

frony

20

Hz

to

20

KHz

with

no

more

than

0

02%/0.05%

tolal

harmonic

distonion

Total

Harmonic

Distortion:

(-2

4B

at

rated

output,

8

Q/ohms)

©

PRE

AMPLIFIER

SECTION

Rated

Output:

tRecout

Terminal}

Input

Sensitlvity/

Input

Impedance:

PHONO:

CD,

TUNER

AUX

TAPE-I,

TAPE-2:

RIAA

Oeviation;

PHONO

Within

£03

dB

Maximum

Input:

@

OVERALL

CHARACTERISTICS

SN

Ratio

(IHF

A

Network):

haput

terminals

shorteweuted

SOURCE

-DIRECT

ON

‘Tone

Control

Adjustable

Range:

BASS

TREBLE

Loudness;

©

OTHERS

Power

Supply

AC

Outlets

Switched

x

2

Unswitched

1

Power

Consumption

Dimensions

x

{W}

x

(H)

x

[DI

Net

Weight

REMOTE

CONTROL

UNIT

(RC-176)

Ramote

control system:

Infrared

pulse

systany

Power

supply:

3V

DC,

Two

size

REP

IAA"?

dry

catl

batteries

External

dimensions:

Waight:

Note:

°1

For

Europe,

Asia

and

Hong

Kong

Hinwei

*2

For

U.S.A,

Canada,

and

Tanvan

8.0.C

©

LEISTUNGSENDS

VERSTARKER

Nenn-Ausgangsleistung:

"Beda

Kandle

betroevem

tan

8

Q/Onm}

20

Hz

brs

20

KH2,TH.D

0,02%4,08%

(an

4.

Q/Onm)

DIN,

1

kHz,

TH.D.

0.7%

*2Fonlaufend

BOW/ESW

pro

Kanal

min

zu

8

Q/Ohm

von

20 He

bos

20

kH2

mit

emem

Gasamitklurfaktor

van

nicht

mane

als

0,02%/0,05%.

Gesamtkilerfaktor:

1-3

dB

be:

Nennausgang,

89/0hm)

VORVERSTARKER

Nenn-Ausgangsieistung:

(Auinanme-Ausgangsbuchse)

Eingangsemplindlichkeit/

Eingangsimpedanz;

PHONO.

CO,

TUNER,

AUX

TAPE-1,

TAPE-2

Innachaib

+

0,3

dB

Manximaler

Eingang:

GESAMTEIGENSCHAFTEN

Signal/Reuschabstand

{IHF-A-Weiche|

(Engange

kurzgascniossen)

SOURCE

DIRECT

ON

Klangregelberelch:

TIEFEN

{6ASS)

HOHEN

(TREBLE)

Gehorrichtige

Lautstarke:

SONSTIGES

Netzspannung

und-

trequenz

Wechselstrom-Ausgange

Gescha'tet

x

2

Ungeschaltet

x

|

Leistungsaufnahme

Abmessungen

(B)

«

{H]

=

{T)

Nettogewicht

FERNBEDIENUNGSGERAT

(RC-176)

Fernbedienungs-System:

intrarot-impulse

Stromversorgung:

3V

Glaichstrom,

wai

Trockenzelle-

Batier:an

vom

format

REP

(AAS

AuRere

Abmessungen:

Gewicht:

1

°

PARTIE

AMPLIFICATEUR

DEPUISSANCE

Puissance nominale;

*'Entramement

deux

canaux

(charge

8

Q/ohms}

20

Hz

&

20

Hz,

DHT

0,02%/0,05%

(charge

4

2

/ohms}

DIN,

1

kHz,

D.H.T.

0.7%

*280W/B5W

en

continu

par

canal

sur

min.

8

Q/ohms

de

20

Hz

&

20

kHe

avec

une

distorsion

harmonique

totale

de

0,02%/0,05%

ou

mains.

Distorsion

harmonique

tot

(-3

dB

&

la

sortie

nominaie,

8

Q/onms)

PRE-AMPLI

Puissance

nominale:

{Borne

de

sonie

d’enregistrement?

CD,

TUNER,

AUX

TAPE-1,

TAPE-2:

Variation

RIAA:

PHONO:

Int

8

£0,3

6B

Entrée

max.:

CARACTERISTIQUES

GENERALES

Rapport

signai/brult

te

ju

IHF

A):

‘Bornes

d’antrée

court-circuitées)

SOURCE

DIRECT:

ON

Gamme

de

réglage

de

tonalite:

GRAVES

AIGUS

Compensation

phystologique:

AUTRES

Alimentation

Prisas

secteur

(AC)

Commutées

x

2

Non

commutées

x

I:

Consommation

Dimensions

(L}

x

(H}

x

{0}

Poids

UNITE

DE

TELECOMMANDE

(RC~176)

Systome

de

télécommande:

Systéme

&

impuision

infrarouge

Allmantation:

3V

CC,

deux

piles

saches

de

format

REP

("AA")

Di

slons

extérieures:

Poids:

*

Speciications

and

contents

ara

subject

to

change

without

notice

for

purposes

of

imp:ovament

©

Anderungen

des

Inhalts

und

der

technisenen

Daten

zum

Zwecke

der

Verbessarung

vorsehalten.

©

Spac:hcations

et

contanu

sont

suats

a

od-teation

sans

préavis

PMA-825R

/725R

BOW

+

BOW/E5W

+

BSW

13OW

+

130W/100W

+

100W

BOW/ESW

0,007%

150

my

MM

2.5

mv/47

kQ/kcohm

MC

200

pV/100

Q/onm

150

mV/47

kQ

/kohm

20

Hz

~

20

kHz

PHONO.

MM

160

mv/1

kHz

MC

12mv/1

kHz

PHONO:

MM:

94

d8

lat

5

mV

input

MC:

76

d@

fat

06

mV

input

CO,

TUNER,

AUX

TAPE~1,

TAPE-2:

107

dB

100

Hz

+8

dB

10

kHz

£8

dB

300

H2

+7

dB

10

kHz

+6

dB

AC230V/50

Hz

(For

Europe,

Asia

and

Hang

Kong

modais)

AC120V/60

Hz

(For

U.S.A.,

Canada,

and

Taiwan

A.0.C.

models)

£

100W

(Totalt

(For

Europe

(except

the

U.K.),

Asia

and

Hong

Kong

models}

120W

(Total)

(For

U.S.A,

Canada,

and

Taiwan

A.O

C.

models)

1OOW

iFor

Europe

(except

tne

U.K),

Asia

and

Hong

Kong

models)

240W

(For

U.S.A.,

Canada,

and

Taiwan

R.0.C.

models}

230W/2

10W

IEC)

4.2A/3.6A

(U.S.A.

and

Canada

models)

434(W)

x

162(H}

x

346(D}mm

PMA-925R

(17-3/32"

x

6-3/8"

x

13-5/8")

434(W)

x

142(H}

x

346(Dimm

PMA-725R

117-3/82"

x

6-19/32"

x

13-578")

11

kg

(24

Ios

402)

/

9.6

kg

(21

lbs

302)

S5(W}

x

194(H}

x

18{0}mm

2-11/84"

x

7-41/64"

x

45/64")

100

g

{about

3.5

oz}

fancluding

batteries)

1

Fur

Europa,

Asien

und

Hong

Kong

Note:

*?

Pour

Europe,

Asie

et

Hong

°2

Fue

USA,

Kanada,

und

Tawan

A.O.C.

*2

Pour

U

S.A,

Canada,

et

Taiwan

R.0.C.

47.

Please

check

to

make

sure

the

following

items

are

included

with

the

main

unit

in

the

carton:

{1}

Operating

Instructions

BRS

AN:

ay

ake

BAT

to

(2)

Remote

Control

Unit

(RC-176)

ies

te

ee

eee

|

(3)

Batteries

R6P

(AA)

.....

os

re

DEUTSCH

Bitte

Gberprifen

Sie,

ob

die

folgenden

Teile

vollstandig

in

der

Ver-

packung

enthalten

sind:

(1)

Bedienungsanienung

us qi

ate

:

1

(2)

Fernbedienung

(RC-176)

.....

Seon

hrs

ere

{3}

Batterien

vom

Typ

R6P

(AA)

whats

odds

daa

Ra

2

jez

controler

que

les

articles

suivants

sont

bien

joints

a

l'ap-

pareil

principal

dans

le

carton:

(UY

Mode

G'OMplol

ii.

ses

coe

dees

8d

dead

deep

es

1

{2}

Unite

de

telécommande

{RC-176)

face

(3)

Piles

R6P

(AA)

sahil

etme

acieia

Sateen

sa

shake

2

Controllare

che

te

part!

seguenti

si

trovino

imballate

con

iapparec-

chio

nella

scatola

di

spediziione.

(1)

Libretto

deite

istruzion:

i

{2)

Telecomando

(RC~176)

Stree

1

(3)

Batterie

R6P

{AA}

:

2

MEMO:

ESPANOL

Por

favor

verifique

asegurandose

de

que

{fos

siguientes

articulos

son

empacados

en

la

caja

pero

separados

de

la

unidad

principal.

(1)

Manual

de

instvucciones

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

Saas

i

(2)

Unidad

de

control

remoto

(RC-176)

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

4

(3)

Pitas

RGP

(AA}.....

2...

ere

2

NEDERLANDS

Kontroleer

of

de

volgende

accessoires

bij

het

hoofdtoestel

in

de

doos

zijn

verpakt:

(1)

Gebruiksaanwijzing

.......

Seas

Hate

Mia

etek

xs

i)

(2)

Afstandsbediening

{AC-176)

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

en

1

(3)

Batterijen

REP

(AA)

.......

SVENSKA

Kontroilera

att

féljande,

férutom

huvudapperaten,

finns

medi

kar-

tongen.

{1}

Bruksanvisning

.

{2)

Fydrrkontroli

(RC-176)

.

{3)

Batterier

R6P

(AA)

..

PORTUGUES

Certifique-se

de

que

as

seguintes

pegas

esto

incluidas

na

emba-

lagem

fora

da

unidade

principal:

(1)

Instrugées

de

operagao

Pahestd

(2)

Unidade

de

controle

remoto

(AC-176}

...

(3)

Baterias

R6P

(AA)

KS

GAAS

M—

DAMS

MNES

chy

HEME

(2)

ELE

REIRC-176)

G3)

RWRLROPCVAD

....

51

ie

ee

eee

f=

PMA-3S25R/725R

REMOVAL

OF

EACH

SECTION

Top

Cover

@

Top

Cover

1)

Remove

4

screws

(A)

and

3

screws

F

2)

Pull

up

Top

Cover

in

arrow

direction.

e@

Front

Panel

1)

Remove

3

screws

:

2)

Remove

6

screws

3)

Detach

Front

Panel

in

arrow

direction.

e@

Main

Chassis

1)

Remove

2

screws

:

2)

Remove

2

screws

securing

Power

Radiator

with

Main

Chassis.

3)

Remove

4

screws

@

securing

Rear

Panel

with

Main

Chassis.

e

Inner

Panel

1)

2)

Remove

5

Knobs

and

4

nuts.

Remove

2

screws

(H)

and

detach

Inner

Panel

in

arrow

direction.

e

Each

Unit

of

Inner

Panel

1

~~

2)

3)

Remove

3

screws

oO

,

and

detach

LED

and

Switch

Unit.

Remove

2

screws

G@)

,

and

detach

u-Com

Unit.

Remove

2

screws

(kK)

securing

Headphone,

SP

Switch

Unit with

Inner

Panel.

Remove

1

screw

()

and

1

washer,

and

detach

Headphone,

SP.

switch

Unit.

Remove

2

screws

(M)

and

a

Knob,

then

detach

Power

Switch

Unit.

Inner

Panel

LED

and

Switch

Unit

”

u-Com

Unit

PMA-925R/725R

Headphone.

Speer

and

Switch

Unit

BE

PMA.S2

SAF

2S

Re

a

Te

ETT,

FUNCTION

OF

NEW

CIRCUIT

1.

CHARACTERISTIC

OF

THIS

CIRCUIT

The

junction

temperature

of

power

amplifier

output

transistor

always

varies

by

an

ambient

temperature

and

music

signal.

Occurrence

of

junction

temperature

varying

causes

in

change

of

bias

current,

unstable

function,

thus

pure

music

signal

playback

is

unable

to

do.

To

maintain

fixed

bias

current

and

to

make

pure

music

signal

playback

possible

is

the

purpose

of

this

circuit.

This

circuit

holds

stable

bias

current

condition

within

a

few

seconds

after

turning on

the

power.

2.

BLOCK

DIAGRAM

OF

BIAS

CONTROL

CIRCUIT

FUNCTION

As

explained

in

Fig.

1,

detects

a

voltage

across

the

emitter

resistors

(RE)

of

TR1,

TR2.

Converts

the

detected

voltage

and

comparing

with

the

reference

voltage

to

make

the

bias

current

value

in

stable

state.

Actually,

these

functions

are

performed

by

1

chip

IC.

.

oo

1

Chip

IC

TR1,

TR2:

Output

transistor

RE

:

Emitter

resistor

Fig.

1

3.

POWER

SUPPLY

FOR

ACTUATING

CONTROL

CIRCUIT

TR

-

[

5,

>

ToIC

(V*)

The

circuit

(IC)

controlling

bias

current

actuates

by

Power

supply

circuit

floating.

RE

Output

Accordingly,

the

power

supply

is

also

needed

to

be

floated.

In

this

circuit,

as

indicated

in

Fig.

2,

output

is

common

TRe

to

provide

+,

—

power

system

and

supplies

to

IC.

Fig.

2

10

Denon PMA-925R User manual

Popular Amplifier manuals by other brands