Kenwood A-58 User manual

Mca

68

KENWOOD

SERVICE

MANUAL

©

1994-8

PRINTED

IN

KOREA

B51-4909-00(

K)

2651

Knob

(Input)

Metallic

cabinet

Knob

Indicator

Panel*

Knob

(Volume)

—

Foot

(Amp)

(K29-6024-04)

(A01-3162-02)

(K29-5968-02)

(B12-0245-03)

(A60-)

(K29-6024-04)

(J02-1111-04)

KENWOOD:

Knob

(Power)

,

Knob

Phone

jack

(Mic)

Knob

(Dolby/D

sound)

(K29-5969-13)

(K29-5968-02)

(E11-0206-05)

(K29-5969-13)

Phone

jack

(Phones)

_—_

Foot

(Front)

Front

glass

Knob

(Mic/Dual

sound)

(E11-0208-05)

(JO2-1040-05)

|

(B10-2050-03)

(K29-3886-04)

Photo

is

A-58.

*Refer

to

parts

list

on

page

45.

A-58/68

CONTENTS/EXTERNAL

VIEW

CONTENTS

3.

1-COM

:

M38197MA-090FP

(X14-,

IC1)

.......

12

EXTERNAL

VIEW.

...........ccccccccccccceceeeeseseesceeenteaeeneneees

2

4.

LED

Driver

:

M66310P

(X14-,

IC4)

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

15

ACCESSORIES

..............:ccccccssesesseseceeeceeeeeesensesseneeeees

4

5.

Analog

IC

:

LC7538JM

(X08-,

IC8)

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

17

CONTROL

wisicisceccncdivcisisscctsecdecceescitsecvvedeccesstsss

ananatends

5

6.

Analog

IC

:

CXA1842S

(X08-,

IC7)................

18

REMOTE

CONTROL

OPERATION

................:c000s0002

7

WIRING

DIAGRAM

............c:::cccscccsssscssecsesscsavsenesaes

19

DISASSEMBLY

FOR

REPAIR

................::::ccseseeeseees

8

PC

BOARD

(COMPONENT

SIDE

VIEW)................

21

BLOCK

DIAGRAM

...............::ccccecceseeesceseseecssesseeseeees

9

SCHEMATIC

DIAGRAM

..............ccccccusesssesenenees

27

CIRCUIT

DESCRIPTION

EXPLODED

VIEW

...........:.c:ccscccscseseseesesserseessnssnnenes

43

1.

Initial

setting

..........

ccc

ee

eee

seeseeeeeeeeeeseees

10

PARTS

LIST

23

cisisccasescdecceasccstsstaestastenttaastevsseiiatreenans

45

2.

Test

mode

by

operating

the

keys

of

the

main

unit

..

11

SPECIFICATIONS

...............c:cccsssessscssessssscentsussesessenans

57

EXTERNAL

VIEW

:

A-58

(Rear

panel)

Phono

jack

(6P

MD/DAT/AV

AUX)

Rectangular

receptacle

(From

BLK)

(E63-0066-15)

(E58-0009-05)

Phono

jack

(4P

Visual)

Phono

jack

(4P

Video)

Rectangular

receptacle

(From

WHT)

Slide

switch*

(E63-0052-15)

(E63-0091-05)

(E58-0011-05)

(S$31-2322-05)

Right

($62-0001-05)

Left

Rectangular

receptacle

(From

BLU)

(E58-0010-05)

Nee

ie

:

AC

outlet*

(E03-)

UT

RISK

OF

ELECTRIG

SH]CK:.

[RISQUE

9F

CROC

ELECTRIOUE|

=

DL

AGT

OREN

||

VR

Phono

jack

(3P

OMNI/S.W)

Phono

jack

(3P

Surr/Center

SP)

_

Foot

(Rear)

AC

inlet

(E63-0115-15)

(E63-0125-05)

(J02-0366-15)

©03-0309-05)

Phono

jack

(2P

Phono)

Rectangular

receptacle

Lock

terminal

board

(Front

SP)

(E63-0072-15)

(E08-0311-05)

(E70-0045-05)

*Refer

to

parts

list

on

page

45.

A-58/68

EXTERNAL

VIEW

A-68

(Rear

panel)

Phono

jack

(6P

MD/DAT/CD/LD)

Rectangular

receptacle

(From

BLK)

Slide

switch*

(E63-0066-15)

(E58-0009-05)

(S$31-2322-05)

Right

(S62-0001-05)

Left

Phono

jack

(4P

Visual)

Phono

jack

(6P

VIDEO/AUX)

Rectangular

receptacle

(From

BLU)

(E63-0052-15)

(E63-0066-15)

(E58-0010-05)

AC

outlet*

(E03-)

Phono

jack

(3P

OMNI/S.W)

Phono

jack

(3P

Surr/Center

SP)

(E63-0115-15)

(E63-0125-05)

Phono

jack

(2P

Phono)

Rectangular

receptacle

Lock

terminal

board

(Front

SP)

Foot

(Rear)

AC

inlet

(E63-0072-15)

(E08-0312-05)

(E70-0045-05)

(J02-0366-15)

(E03-0309-05)

*Refer

to

parts

list

on

page

45.

A-58/68

ACCESSORIES

System

configuration

AMP

TGE

TUNER

MIDI

M-58

A-58

CD/LD

PLAYER

CASSETTE

DECK

LS-58

MIDI

M-58M

A-58

LS-58

MIDI

M-767

A-58

MIDI

M-868M

A-58

T-58

MIDI_W.969LD

°

MIDI

M-58,

M-58M,

M-767,

M-868M

:

Speaker

cords

are

packed

with

the

Speakers.

All

other

accessories

are

packed

with

the

Amp/GE

unit.

¢

MIDI

M-969LD

Speaker

cords

are

packed

with

the

Speakers.

Remote

control

unit

and

batteries

are

packed

with

the

CD/LD

player

unit.

All

other

accessories

are

packed

with

the

Amp/GE

unit.

¢

FM

indoor

antenna

*

AM

loop

antenna

ass'y

(T90-0182-15)

(T90-0195-05)

Loop

antenna

stand

eS

=

(J19-3645-05)

*

AC

plug

adaptor

«

Antenna

adaptor

*

Speaker

cords

(E03-01

15-05)

(T90-0198-05)

(818.

05.

011)

LS-58

M-767,

M-868M,

M-969LD

only

M-58,

M-58M

only

(E31-5479-08)

S-58

(E30-1271-08)

S-68

:

Except

for

U.K.,

Europe

and

Australia.

3

|

For

the

unit

with

a

European

AC

plug

For

U.K.

and

Europe.

For

U.K.

and

Europe.

in

areas

other

than

Europe.

*

Audio

cord

*

Parallel

cord

(E30-0505-05)

M-969LD

only

(E30-2628-05)

M-969LD

only

*

Power

cord

*

Remote

control

unit

(RC-58)

*

Remote

control

unit

(RC-68LD)......1

(E30-2778-05)

Y

(A70-0986-05)

(X94-1050-71)

M-969LD

only

(E30-2779-05)

M,E,G,

M-969LD

M-58,

M-58M,

M-767,

M-868M

only

(E30-2780-05)

X

({E30-2781-05)

T

x

focccooocoo0

:

hoogoogooog0

a

fe

nooo000000

5

a

dooeoc00c0

[ooooo0000000

Battery

cover

Battery

cover

(A09-0106-08)

(FO7-0721

-33)

*

Batteries

AMPLIFIER

UNIT

KENWOOD

SSSRSiESst"°

Q

input

indicators

O

INPUT

SELECTOR

knob

Rotate

to

select

the

source

component

to

be

played.

@

DEPTH

key

Press

to

add

a

depth

to

the

sound

field.

ON.B.CIRCUIT

key

Press

to

obtain

a

more

natural

bass

sound.

A-58/68

CONTROL

DOWN«

eUP

OBALANCE

key

Press

to

adjust

the

volume

balance

between

the

left

and

right

speakers

OCD

REC

key

Press

to

play

a

source

component

while

recording

a

CD

on

tape.

@CD

DIRECT

key

Press

to

play

CD

with

a

higher

sound

quality.

OVOLUME

CONTROL

knob

A-58/68

EQUALIZER

UNIT

Frequency

level/peak

level

@POWER

key

@

STAND

BY

indicator

©

CENTER

MODE

key

Press

when

adjusting

or

playing

the

DOLBY

SURROUND

effect.

©

PRESENCE

key

Press

for

presence

play.

©

DOLBY

PRO

LOGIC

key

Press

when

adjusting

or

playing

the

DOLBY

SURROUND

effect.

G@

DOLBY

3

STEREO

key

Press

when

adjusting

or

playing

the

DOLBY

SURROUND

effect.

CONTROL

Character

information

display

on

input,

presence

mode,

etc.

MASTER

CENTER

DUAL

SOUND

Al

vor

EGON

VOLUME

level

display

SPEAKER

b&

PRESENCE

DOLBY

PRO

LOGIC

®

DOLBY

3

STEREO

Operation

mode

indicators

Remote

sensor

@

OFF

key

Press

to

turn

the

presence

play

or

Dolby

Surround

play

OFF.

ODISPLAY

key

Press

to

switch

the

display

modes.

©

PHONES

jack

Connect

headphones

for

listening

through

them.

@

SPEAKER

ON/OFF

key

Press

to

defeat

the

speaker

sound

when

listening

through

headphones.

@CHARACTER

key

Press

to

switch

the

spectrum

analyzer

display

patterns.

@EQ.EFFECT

key

Press

to

turn

the

equalizer

effect

ON/

OFF.

II

OSG

G

Dosey

omy

PRO

LOGIC

3

STEREO

@

Equalizer

preset

keys

Press

to

recall

an

equalizer

cuve

matching

the

music

source.

@AI

key

Press

to

set

the

equalizer

cune

auto-

matically

in

accordance

with

he

CD

played.

@MIC

jack

@MIC

MIXING

knob

Adjust

the

volume

balance

beween

the

karaoke

accompaniment

and

microphone

singing.

@DUAL

SOUND

MIXING

kno

b

Adjust

the

volume

balance

beiween

the

CD

and

another

music

source

@

DUAL

SOUND

key

Press

to

play

a

CD

and

anothe

music

source

simultaneously.

A-58/68

REMOTE

CONTROL

OPERATION

Super

woofer

operation

keys

>

For

use

when

operating

the

super

woofer

(op-

tional).

|

S.W.POWER

key,

S.W.VOL.

key

|

rams

TAPE

A

operation

keys

These

keys

perform

the

same

operations

as

the

corresponding

keys

on

the

cassette

deck,

However,

operations

requiring

simultaneous

pressing

of

two

keys

are

not

possible.

CD

player

operation

keys

<4

and

&P

keys,

and

BP!

keys,

P/E

key,

g

key,

P.MODE

key,

EDIT

MODE

key,

CHECK

key,

CLEAR

key,

*DISC

SKIP

key

*The

DISC

SKIP

key

is

for

use

with

the

M-58M

or

M-868M

system.

Equalizer

operation

keys

EQ.EFFECT

key,

Al

key,

DEPTH

key

!

Ss

ee

Surround

and

presense

effect-related

keys

DOLBY

PRO

LOGIC

key,

DOLBY

3

STEREO

key,

PRESENCE

key,

OFF

key,

TEST

TONE

key,

REAR

LEVEL

keys,

CENTER

LEVEL

keys,

DELAY

TIME

keys

ass

KENWOOD

REMOTE

CONTROL

UNIT

RC-58

Model:

RC-58

Infrared

ray

system

SLEEP

timer

key

POWER

key

TAPE

B

operation

keys

These

keys

perform

the

same

operations

as

the

corresponding

keys

on

the

cassette

deck,

However,

operations

requiring

simultaneous

pressing

of

two

keys

are

not

possible.

ances

Ty

Tuner

operation

keys

:

BAND

key,

P.CALL

keys

(V,A)

Tee

*

sais

ae

Numeric

keys

Function

as

the

numeric

keys

of

the

CD

player

when

the

CD

input

is

selected.

Function

as

the

numeric

keys

of

the

tuner

when

the

TUNER

input

is

selected.

Input

selector

key

INPUT

key:

Press

to

select

the

component

to

be

played.

SOS

SSO

SRS

VOLUME

CONTROL

keys

Press

to

adjust

the

volume.

The

volume

level

is

displayed

on

the

graphic

equalizer

unit

while

these

keys

are

operated.

MUTE

key

Press

to

mute

the

sound

temporarily.

A-58/68

DISASSEMBLY

FOR

REPAIR

Front

Panel

*Remove

the

case

in

advance.

1.Remove

the

6

screws

(‘@)

of

the

upper

and

lower

sides

of

the

panel.

2.

Disconnect

CN5

of

Surround

PCB

(X08-264,

A/3,

Vertical

PCB)

and

disconnect

CN2

of

Audio

PCB

(X09-404,

A/6).

3.

Front

panel

is

removed

by

pulling

it

from

the

chassis.

4.

Remove

the

VOLUME

CONTROL

knob

(@)

and

IN-

PUT

SELECTOR

knob

(‘®)

by

loosening

the

Allen

screws.

5.

Remove

the

12

screws

of

Display

PCB

(X14-392,

A/5

[Back-side

of

the

front

panel]),

and

remove

the

Dis-

play

PCB.

Rear

Panel

1.

Remove

the

28

screws

(O)

of

the

rear

panel.

2.Disconnect

CN4

and

CN6

of

Surround

PCB

(X08-

264,

A/3,

Vertical

PCB),

then

remove

the

PCB

by

pulling

up.

3.

Disconnect

CN1

and

CN2

of

Surround

PCB

(X08-

264,

B/3,

Vertical

PCB).

@:0

x28

A:For

removeing

X09-404

(B/6)

x3

Mic

Mixing

PCB

(X09-404,

E/6)

1.

Remove

the

MIC

MIXING

knob

and

DUAL

SOUND

ANT

(EI)

MIXING

knob

(@)

by

loosening

the

Allen

screws.

2.While

pressing

the

two

clicks

(‘@)

of

the

MIC

jack

(with

black

cover),

remove

the

PCB.

X08-264

(A/3)

sea

part

can

be

cut

oe

(Then,

fix

them

with

2

screws.)

2.

Power

transistors

can

be

changed

from

bottom

part

t

|

by

removing

the

soldering.

Clicks(@)

A-58/68

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A-58/68

10

CIRCUIT

DESCRIPTION

1.

Initial

setting

1-1.

Setting

method

®

With

the

POWER

key

pressed,

connect

the

AC

power

plug.

e

When

the

AC

power

plug

is

connected

or

discon-

nected

in

the

TEST

mode

by

operating

the

keys

of

the

main

unit

or

by

serial

communication.

1-2.

Contents

e

Initialize

all

the

functions,

including

the

test

mode.

1-3.

Initial

setting

state

POWER

ONIOPP

isstiiste

sioseeaiecsctshid

ace

uke

ua

Cavgnastsshd

dealt

eavtndha

tc

wasunsin

tates

oti

tuadaaxupusuuaae

ol

cansouvonatasatals

sip

lesiee

cette

OFF

IVIAUIN

VOLUME

EV

BE

wits

cistoin

sate

caccczssatusacenaustastathss,

fayeut

cudvesiansn

igs

oecleaded

Rasta:

seu

bisvdiaapSveste

tact

oma

wbnettaas

cana:

-66dB

EZ

BALANGE

i

tscictin

sc

crncicancatstectunsntuaieaniasia

sue

ipuaelibiihest

effin

lands

oa

heseraace

Aba

bsdeaphed

i

hicousbacdiagatsons

out

aleeieaente

CENTER

AUDIO

SIGNAL

INPUT

+

SELECTOR

STATE

‘sissicecssosscestensenssocducssvscedssensdssshbnaisastsvsasseidvieessuodvecasttetsosabesteive

TUNER

VIDEO

SIGNAL

INPUT

©

SELECTOR

STATE

wisissiscscssceacusan-ieechssaayacovigs

aeapeastlanconnatguaiaeieevsnrsy

ac

cdedaveid

acevo

leiees

VIDEO

MP

EAKER

ON/OFF

cai

cocci

scascnnston

esctbieapecsed

de

canumonadeeceugnsauauivess

sausuassven

oquseinitsaiestie

a8

db

esciauenntdd

saunilionen

ieee

ok

ON

PE

CIRC

OUT

DOIN

OFF

ces

aseucstnecticcseseseat

cates

caadhsee

avs

syhcanageiudepuans

yences

is

icess

ceeaaerihewias

ees

teas

aes

eeasbantnrdada

teens

OFF

EEC

ON/OFF

siscuctapesiie

eat

viteenscastitsancevbencatstaorei

sas

cuesuay

cessadiclgeseaceduaad

oadeco

uavtaasus

vicesedptomee

tanita

dean

iauguatete

Godtioesiess

OFF

CDDIRE

GE:

ONJOPP

oa

casccesse

cars sana

dc

desatev

nies

attpatn

ovat

enlemeaan

es

testectanaaii

Hatacseitadudvauned

tien

usted

ates

cae

Se

EN

OFF

DUAL

SOUND

ON/OFF

ticsiccttosticsstatdoastesownaesisesestudeatesiicavasutotusstidletesicei

es

eesaud

ead

clit

okcsavbasdie

aceasecnaaesisi

toasts

OFF

BC

VE

sts

ces

uscc

seca

exes

tee

cudys

ese

Sa

vcndalcas

te

ca

ceuncg

a

ode

cost

ha

sad

ens

dsd

ona

i

aug

Reawigandioutesbead

cee

aancedlodaseow

ais

POPS

EQSON/OPP

ierccig.

i

ctoscccsets

thts

usasdseossasheyviaan

Baucus

cess

dphiv

nes

say

tia

caste

ce

lee

vsukesasesteliedviieaauustioeets

sib

esssoat

rds

dla

scudodtin

OFF

DIUSIPEA

Y

WIODE

ss

sstuks

ria

tact

ccnittccuhetaas

tea

asda

isicdbon

nse

tvselypacgaasatacs

th

Seka

ielaviast

pais

voralareans

GRAPHIC

EQUALIZER

MODE

SPE

ANA

DISPLAY

MODE

vias

isccistasssisstessesits

loa

nenatvasics

ccvaruipasoladts

Mlawisturstiateisogeed?

SPE.ANA.

1

(NORMAL

DISPLAY)

TASEG:

DISPLAY

ip

siccsicsic,

oct

a

eoeties

ch

Sete

cating

Tats

Suchen

toyualudansunts

sect

uatuatiansslea

go

te

ndbasio

anus

baes

hs

cantse

tucaicae

INPUT

SELECTOR

PEATE

DISREAN

AEA

cetacean

east

cus

aya

se

neste

eSbet

eact

oa

saad

de

deg

dlsictat

tdazan

nda

tebeediceadeutucrds

ALL

CLEAR

PPI

eo

sea

ese

sa

eas

ns

pcy

su tv

bled

pds

aula

apc

bdah

dey

caine

ducnas

eco

baiah

canes

tidd

Rassnatbtocisaceisiabac

ei

dabis

ivan

Deeketoune

OFF

PAU

DCS

i

citaizaes

isis

ser

an

Slaps

estas

canes

encesibes

aubus

peas

isa

eet

fuss

dCi

tee

adele

Uc,

ceetaaryata

suds

easat

tS

ntia

asi

ccelecca

se

Maden

clued

OFF

BAP

EINK

MODE

sc

cieicinnsoustionssescessasavensveasbisaluenguspveiiaut

st

Pinas

sib

Gnucis

Gosia

slab

ocet

ddeiaaPacuaduinas

bodes

tea

Ddseshelecein

suniaaveud

dates

OFF

DEPTH

CONTROL

ON/OEP

sicctiusetcacstasitesicnac

gah

oedvosse

¥essor

cose

lesson

sdudecy

utenti

seudanieeasiansesaciesiege

canada

tivestastentolleustied’

OFF

PRESENCE

ON/OFF

ative

rican

ceases

toons

asasieiausnestn

coal

apcads

da

ssuvlacepcnuaUucdayea

onsen

tupadani@eniansaGt

iatesideess

PRESENCE

OFF

LAST.

PREOEN

CE

MODE

fs

iiissscvsiesinsestivestzisidands

on

tanesst

tas

ca

noua

balad

rusted

teiavneeaoaces

estab

visadie

su

mualis

ceewendiaelase

ARENA

DOLBY

SURROUND

PROLOGIC

ON/OFF

iscisinssosinsaviinctdvatusinnctacsthiensioviecvissnsvadiuhods

ind

sinusbvioieestioneuslaasdnetaadadievesys

OFF

DOLBY

SURROUND

PRO

LOGIC

CENTER

SPEAKER

MODE

.......ccsssscssssssssesesssscecesessscssescscsssseceassvsssssnens

NORMAL

DOLBY

SURROUND

PRO

LOGIC

CENTER

SPEAKER

VOLUME

LEVEL

.......sscscccesessscscosessscssscsssscssecescsenena

enees

0dB

DOLBY

SURROUND

PRO

LOGIC

REAR

SPEAKER

VOLUME

LEVEL

.......ssscscsssssesscscesesssssssssssesssssescasenseene

excess

0dB

DOLBY

SURROUND

PRO

LOGIC

DELAT

TIME

LEVEL

........s:scscssssssscssssssesesessesescecessssscscsssasesssessscseaseaeaceees

20msec.

DOLBY'S

STEREO‘ON/OFE

ss

sccoviicruteciisssuiosa

utes

ivaspasbatsias

sii

Eereetecualdsdyad

bawdy

deatadeavneiauicaiastet

ied

eviseuttisssdendsiebnvalicbtlis

OFF

DOLBY

3

STEREO CENTER

SPEAKER

MODE

sssscsessisceoecscsssiesinssiansesccsicssstarsnarecensssndecossedatotanrscncessevedensiets

NORMAL

DOLBY

3

STEREO

CENTER

SPEAKER

VOLUME

LEVEL

......csssssssessssssssssssssvessecesescsesacencesacacescsesasacsanenseana

onsese

0dB

TES

TE

WODIE

ice

casesiuiecsssved

pusa

saxvaawabivasuetin

eiveduesdaagetiawaupsesiiasbyia

tent

nd

des

sanhussii

aa

vendaaidudusw

iicaaetecsostose

sient

owes

obavad

OFF

DECK

REG

IMGDE

stcclasatastesuiasscauyestustennespetaitess’

izedccvesvcaton

taviusds

death

dtsdnens

Waniasyiisberastisoblidiassiosaesntee

NOT

REC

MODE

CORRS

isis

tvs

bialiatnga

acto

05s

de

ascee

Sabet

ooo

gsbelloetigea

eal

eok

ue

nagvestivecdvapcusualts

Sos

aedede

duu

reasunoas

ih

epsdecdedceets

NOT

CCRS

MODE

A-58/68

CIRCUIT

DESCRIPTION

2.

Test

mode

by

operating

the

keys

of

the

main

unit

2-1.

Setting

method

e

With

the

PRESENCE

OFF

key

pressed,

connect

the

AC

power

plug.

2-2.

Resetting

method

©

Disconnect

the

AC

power

plug,

and

the

TEST

MODE

is

reset

and

the

system

is

initialized.

2-3.

Contents

@

Auto

power

on

e

If

the

AC

power

plug

is

connected

with

the

PRES-

ENCE

OFF

key

pressed,

the

power

is

turned

on

and

all

the

functions

are

initialized.

The

operations

used

while

the

power

is

turned

on

(MUTE,

IC

control,

etc.)

are

executed

as

in

the

nor-

mal

operation

mode.

(If

the

power

is

turned

on

with-

out

turning

on

the

MUTE,

the

protection

may

work

and

inspection

may

not

be

executed.)

@

ALL LED

ON

mode

If

the

AC

power

plug

is

connected

with

the

PRES-

ENCE

OFF

key

pressed,

all

the

FL

and

LED

seg-

ments

light

up.

Then,

if

any

key

of

the

main

unit

is

pressed,

they

are

set

under

the

normal

indicating

condition.

®

Confirmation

of

effectiveness

of

keys

of

the

main

unit

e

It

can

be

confirmed

that

the

keys

of

the

main

unit

are

accepted.

@

Operations

of

the

keys

and

switches

which

operate

differently

in

the

TEST

MODE

from

themselves

in

the

normal

condition.

The

keys

and

switches

other

than

the

following

op-

erate

normally.

BALANCE

L:

3-stage

setting

used

to

set

to

R

~

CENTER

>

L.

BALANCE

R:

3-stage

setting

used

to

set

to

L

>

CENTER

>

R.

DISPLAY

KEY

Change

of

bar

display

mode

of

FL

tube

The

bar

display

mode

of

FL

tube

is

changed

cyclically

as

shown

below.

EQ

display

>

Inverted

SPE.ANA.

display

(Normal

display

mode)

Niagara

display

CD

REC

KEY

3-stage

setting

of

CENTER

SPEAKER

VOLUME

LEVEL

The

center

speaker

volume

level

is

changed

cycli-

cally

as

shown

below

in

the

DOLBY

SURROUND,

DOLBY

3-STEREO

mode.

MINI

>

CENTER

MAX

Al

KEY

3-stage

setting

of

REAR

SPEAKER

VOLUME

LEVEL

The

rear

speaker

volume

level

is

changed

cyclically

as

shown

below

in

the

DOLBY

SURROUND,

DOLBY

3-STEREO

mode.

MINI

>

CENTER

MAX

CHARACTER

KEY

3-stage

setting

of

DELAY

TIME

The

delay

time

is

changed

cyclically

as

shown

below

in

the

DOLBY

SURROUND,

DOLBY

3-STEREO

mode.

15msec

—

20msec

30msec

POPS

KEY

EQ

LEVEL

FLAT

The

EQ

level

is

set

to

0

aB.

ROCK

KEY

EQ

LEVEL

MAX

The

EQ

level

is

set

to

maximum.

JAZZ

KEY

EQ

LEVEL

MINI

The

EQ

level

is

set

to

minimum.

CLASSIC

KEY

TEST

TONE

ON/OFF

The

test

tone

is

turned

on/off

only

in

the

DOLBY

SURROUND,

DOLBY

3-STEREO

mode.

MOVIE

KEY

ALL

FL

DISPLAY

SEGMENTS

PUTTING

OUT

ON/

OFF

All

putting

out

and

normal

putting

out

of

the

FL

dis-

play

segments

are

selected

alternately.

©

Output

of

MUTE

signal

e¢

The

MUTE

signal

operates

normally.

©

Relay

control

in

DOLBY

mode

e

The

relays

are

controlled

in

the

DOLBY

mods

as

in

the

normal

operation

mode.

11

A-58/68

CIRCUIT

DESCRIPTION

3.

u-COM

:

M38197MA-090FP

(X14-

[A/5],

IC1)

3-1.

Block

diagram

FL

TUBE

:

BJ268GK

25

Any

figure

in

( )

is

a

number.

Change

of

distination

Key

matrix

(8

x

3)

10

/

@

(88)

(80~87)

(55~79)

(45~54)

(42~44)

XR-1091ECP

BANDPASS

FILTER

SERIAL

I/O

(36,

37)

(11,

12)

REMOCON

M38197MA-090FP

RESET

PROTECTION

INPUT

SELECTOR

ROTARY

ENCODER

(30,

31)

VOLUME

ROTARY

ENCODER

nie

(24~26)

(21~23)

(18~20)

DOLBY

PRO-LOGIC

SURROUND

MATRIX

DECODER

:

LA2785

LC7538JM

MAIN

SP.

VOLUME

TONE

CONTROL

N.B.

CIRCUIT

TC9213P

DOLBY

PRO-LOGIC

SURROUND

PASSIVE

DECODER

:

LV1010N

12

INPUT

SELECTOR

LED

CD

DIRECT

LED

CD

REC

LED

N.B.

CIRCUIT

LED

POWER

STANDBY

LED

DEPTH

CONTROL

LED

C/S

SP.

VOLUME

ELECTRIC

VOLUME

CXA1842S

3-MODE

SURROUND

&

VOCAL

CANSEL

M66310P

LED

DRIVER

NJM2279D

VISUAL

SELECTOR

|

TC9163N

-

TC9164N

SELECTOR

FRONT

SPEAKER

MUTE

OMNI

SPEAKER

MUTE

POWER

RELAY

=

1

FRONT

SPEAKER

RELAY

C/S

SPEAKER

AY

REL

HEADIHONE

RELAY

A-58/68

CIRCUIT

DESCRIPTION

3-2.

Pir:

connection

Zoramtrn

eo

HRAHRRHRAHDH

“x¥<<¥¥

YY

TSIESASS

eBuerce

SOS8G055

w

—

3]

>

@aerVvooe

oVvuVwwuwewwwwy

SAZSEZSEErzzz2SZ2Z2ZHGGHGHHHOO

PROTECT

SEG26/KS7

o

SEG25

re

SEG24

ih

SEG23

re

SEG22

FS

SEG21

ie

SEG20

i

SEG19

B

SEG18

ft

SEG17

DATA

SEG16

cLock

SEG15

out

SEG14

ay

SEG13

C/S

SP.

M38197MA-090FP

ena

FRONT

SP.

(TOP

VIEW)

SEG

HEADPHONE

nae

C/SVOL.

STB

nin

C/SVOL.

DATA

sabe

C/SVOL.

CK

os

MVOL.

CE

ora

MVOL.

CL

aes

MVOL.

DI

ae

ENABLE

SEGO3

CLOCK

SEGO2

DATA

SEGO1

FRONT-MUTE

DIG10

“OMNI-MUTE

DIGOS

4

DIGos

Bene

DIGo7

SEL.A

REMOCON

VOL.B

VOL.A

3-3.

Key

matrix

KRO

KR1

KR2

ee

7)

ROCK

DISPLAY

SPEAKER

KSINI

KSO

ks1

ks2

KS3

Ks4

[CLASSIC

[DOLBY

3-STEREO|

BALANCER

|

Ks5

[POPS

_|DOLBYSURROUND|

BALANCEL

|

kse

[|

EQON

[PRESENCE

|

NB.

CIRCUIT

_|

Ks7

|_cHaracrer

|

-

[DEPTH

CONTROL

Change

of

destination

Ad8

type

:

Input

selector

CD

-

AV

AUX.

A68

type

:

Input

selector

CD/LD

-

AUX

13

A

14

-08/68

CIRCUIT

DESCRIPTION

3-4.

function

Function

Detection

of

protection.

("H":

Detected,

"L"

:

Not

detected)

|

Analog

signal

input

directly

from

the

filter

circuit.

(Pin

2~4

;

16kHz,

6.3kHz,

2.5kHz)

Analog

signal

input

directly

from

the

filter

circuit.

(Pin

5~8

:

1.0kHz,

400Hz,

160Hz,

63Hz)

Visual

selector

(NJM2279D)

control

signal

output.

("H"

:

OFF,

"L"

:

ON)

Selector

(TC9163N,

TC9164N)

control

DATA

signal

output.

Selector

(TC9163N,

TC9164N)

control

CLOCK

signal

output.

|

O

|

Selector

(TC9163N

:

SEL2,

TC9164N

:

SEL1)

control

STROBE

signal

output.

Selector

(TC9164N

:

SEL3)

control

STROBE

signal

output.

14

ST2

0

Ea

aaa

ee

Center/Surround

speaker

relay

control

signal

output.

("H"

:

ON,

"L"

:

OFF)

|

46

|

FRONTSP.

|

0

|

Front

speaker

relay

control

signal

output.

("H"

:

ON,

"L"

:

OFF)

|

17.

|

HEADPHONE

——s«|

|

Headphone

relay

control

signal

output.

("H"

:

ON,

"L"

:

OFF)

|

ig

[csvorstB

|

o

|

Center/Surround

speaker

volume

IC

(TC9213P)

control

STROBE

signal

output.

|

19

[cysvoL.paTA

sid

Center/Surround

speaker

volume

IC

(TC9213P)

control

DATA

signal

output.

|

20

|csvo..cK

|o|

Center/Surround

speaker

volume

IC

(TC9213P)

control

CLOCK

signal

output.

ar

fina.

"|

Want

scl Les

ew

CE

ag

eupa

|

22

|

MvoL.cL_

|

O_|

Main

speaker

volume

IC

(LC7538JM)

control

CLOCK

signal

output.

|

23

|

Mvol.Di

|

O_|

Main

speaker

volume

IC

(LC7538JM)

control

DATA

signal

output,

eee

a

eee

ere

ml

(Dolby

Pro

Logic

surround

matrix

decoder

:

LA2785,

Dolby

surround

passive

decoder

:

LV1010N)

Ee

ee

eee

(Dolby

Pro

Logic

surround

matrix

decoder

:

LA2785,

Dolby

surround

passive

decoder

:

LV1010N)

[ee

Be

Sevres

aan

tind

it

antl,

(Dolby

Pro

Logic

surround

matrix

decoder

:

LA2785,

Dolby

surround

passive

decoder

:

LV1010N)

(

ON)

FRONT-MUTE

|

O

|

Signals

to

control

muting

circuit

of

front

speaker.

("H"

:

OFF,

‘L":

OMNI-MUTE

lo

|

Signals

to

control

muting

circuit

of

OMNI

speaker.

("H"

:

OFF,

"L"

:

ON)

CE

Detection

of

backup.

("H"

:

Others,

"L"

:

Backup

mode)

30,

31

SEL.B,

SEL.A

|

1

|

Rotary

encoder

phase

signal

(Pin

30

:

Phase

B,

31

:

Phase

A)

input

for

input

selector.

32

REMOCON

ell

Remote

control

signal

input.

33,

34

|

VOL.B,

VOL.A

rae

Rotary

encoder

phase

signal

(Pin

33

:

Phase

B,

34

:

Phase

A)

input

for

volume.

35

ESET

I

Detection

of

reset

signal.

("H"

:

Others,

“L"

:

Reset)

System

serial

BUSY

signal

Input/Output.

VO

|

System

serial

DATA

signal

Input/Output.

[1

[system

cockinput

aM

OOSCSC—C—CSCSCSCSC‘“‘*S

O

|

System

clock

output

(8.4MHz)

GND

Power

relay

control

signal

output.

("H"

:

ON,

"L"

:

OFF)

LED

driver

(M66310P)

control

DATA

signal

output.

LED

driver

(M66310P)

control

SHIFT

CLOCK

signal

output.

FL

tube

grid

01G~10G

(Pin

65~56)

drive

signal

output.

("H":

ON,

“L"

:

OFF)

55~79

EGO1~SEG25

FL

tube

segment

P01~P25

(Pin

48~41,

39~37,

35~33,

30,

29,

26~18)

drive

signal

output.

Key

scan

7~0

signal

output.

("H"

:

ON,

"L"

:

OFF)

80~87

SEG26/KS7~SEG33/KSO

|

O

FL

tube

segment

P26~P33

(Pin

17,

16,

14~12,

9~7)

drive

signal

output.

("H"

:

ON,

"L"

:

OFF)

|

88

|

SEG3a/KSm

sO

FL

tube

segment

P34

(Pin

6)

drive

signal

output.

Key

scan

INI

signal

output.

("H":

ON,

"L"

:

OFF)

g990

[NC

|

~_

|

Notused.

91

Vcc

I

Power

input

for

p-com.

(+5V410%)

Not

used,

95~97

KR2~KRO

Key

return

signal

input.

("H"

:

ON,

"L"

:

OFF)

Pull

down

power

input.

(-30V)

A/D

converter

GND

input.

(Vss)

A/D

converter

reference

voltage

input.

(+5V)

Name

PROTECT

No

©

w

fe>)

37

N

wW

<

r7)

a”

4)

Bo)

°

=

m

Be)

p

aS

|

as

nv

p

Nm

>

fL

Ww

w

ioe

Ree)

KX

(eo)

c

3

pL

o

”

za

~

G~6G,

DIGO7~DIG10

g

(e)

A-58/68

CIRCUIT

DESCRIPTION

4.

LED

Driver

:

M66310P

(X14-

[A/5],

IC

4)

4-1.

connection

NC

——

SOQp

POWER

STANDBY

LED

~«€—

Qo

DEPTH

CONTROL

LED

«€—

Op

CXA1842S

V.C

6

«€-

Qa

1

CXA1842S

B.B

7

«€—

Os

2.

Vcc

3

M38197MA-O90FP

pin42

——

A

4

&

GND

OE

5

2

M38197MA-090FP

pin4é3

——

CK

6

&

RESET

signal

input

——

R

7

©

M38197MA-O90FP

pin44

——

CKs

;

=

GND

9

10

11

12

4-2.

State

of

IC

port

(LED

driver)

P|

A-58

A-68

CXA1842S

V.C

(Pin

6)

|

Os

|

CXA1842S

B.B

(Pin

7)

Fao

[—CXATBAZSSW2(Pin9)

fo

[cD

S|

~~

PHONO

CD

Por

[PHONO

ros

[avaux

|

—ViEO

|

OH

|

ra

TUNER

|

Qu

|

MD/DAT

|

OK

|

VIDEO

CD/LD

CD

DIRECT

|

Om

|

CD

REC

N.B.

CIRCUIT

a

POWER

STANDBY

|

Op

|

DEPTH

CONTROL

Presence

BYPASS

JAZZ

CLUB

STADIUM

HIT

MASTER

DEPTH

CONTROL

ON

O:

ON,

Blank

:

OFF,

&

:

Optional

ON/OFF

is

active

low

Qc

—}

CXA1842S

SW1

8

Qp

—®

CXA1842S

SW2

9

QE

—

>

CD

(A-58)/PHONO

(A-68)

LED

QF

—%>

PHONO

(A-58)/TUNER

(A-68)

LED

Qc

—>

AV

AUX

(A-58)/VIDEO

(A-68)

LED

QH

—>

TUNER

(A-58)/AUX

(A-68)

LED

Q!

—

>

TAPE

LED

QJ

—j»

MD/DAT

LED

Qk

—

>

VIDEO

(A-58)/CD/LD

(A-68)

LED

Qt

—»

CD

DIRECT

LED

Qu

—%

CD

REC

LED

Qn

—>N.B.

CIRCUIT

LED

Input

selector

ad

Or

[ac [ax

|

ar

|

as

|

Ox

|

peel

arin

ions

at

ae

a

Ec

CE

a

ee

oe

a

ae

ee

(ae

Cas

ae

ic

ee

ae

a

et

Me

a

Ao

[re

ee

ae

a

ee

Sea

ee

a

eo

Ce

io

es

a

ee

ie

ea ee

ie

Giana

Kiel

ae

AU

Ne

rod

ed

PmopaT

[|

ft

TT

oO]

O:

ON,

Blank

:

OFF

CD

DIRECT/CD

REC/N.B.

CIRCUIT

POWER

STANDBY/DEPTH

CONTROL

N.B.

CIRCUIT

POWER

STANDBY

DEPTH

CONTROL

O:

ON,

Blank

:

OFF

A

:

Optional

(Conform

to

setting

of

each

mode)

15

A-58/68

16

CIRCUIT

DESCRIPTION

4-3.

State

of

IC

port

(SEL.

IC)

SEL.

IC1

SEL.

IC2

SEL.

IC3

1

PHONO

TAPE

REC

=

ae

Ex

|

3

|

ViDEOPLAY

|

mo/baTREC

|

-

|

Ze

eee

=

seed

[ae

|

8

*

w-com

:

M38197MA-090FP

(IC

1)

15:

C/S

S.

RELAY

28

:

OMNI

SP.

MUTE

¢

VISUAL

SELECTOR

:

NJM2279D

(IC20)

Pin9:

CONT

B

Pini0:

CONTA

PMDDAT

PLAY

|

BYPASS

DOLBY

DUAL

SOUND

OFF

GE

REC

OFF

|

CD

DIRECTON

SEL.

IC1

(1C3)

SEL.IC2

(IC5)

1C20

8

7

6

5

4

3

2

1

aa

ra

[2 [1

feowrelowra

oa

maa

ee

T

fofolol«

[x

|

cone

Poo

popa

pa

Pruner

[|_|

ia

Pood

et

aie

co

|PHONO,T

[|

|

[|

|

[o/fo[ofo]

xT]

*

|

nec

[tare

|

[Oo]

||

[ofo}

|[#]*]

or

[veo

|

[

|

fol

_|_fof

[eft

[ry

ravaux[

|

[||

po[folepoys

ew

|

A

OA

VR

SE

rwooatt

||

|}o|-

|}

[ofol«|«|

feo

folo;

|.

|

Jolo|,

|#|-|

ois

folef

|

—f|_|

|

topo,

ata,

Pruner

TO|

|

[ot

|_|

|

_}olo|,

[#|[*|

2

a

A

RE

nec

[TAPE

—_|

5c

AE

a

Go

on

[vino

|

O

Se

ce

aa

a

Pav

aux

|

0

|

oH

So

Paux

ase

ool

oa

ela

|

TMDIDAT.

mary

We

|

oleae

dt

role

|

alae]

O:

ON,

Blank

:

OFF,

*

:

Maintain

last

condition

of

visual

selector

PRESENCE/DOLBY

SURROUND/DEPTHCONTROL

/CD

DIRECT/DUAL

SOUND

DOLBY

PRO-LOGIC

.

3-STEREO

PRESENCE

DEPTH

CONTROL

(ON)

Al

(AUTO/FOCUS)

O:

ON,

Blank

:

OFF,

&

:

Optional

(Conform

to

setting

of

each

mode

[DOLBY

-

PRESENCE])

CIRCUIT

DESCRIPTION

5.

Analog

IC

:

LC7538JM

(X08-

[A/3],

IC8)

5-1.

connection

LROUT

1

RROUT

LFOUT

2

RFOUT

LFIN

3

RFIN

LVREF

4

RVREF

L1dBOUT

5

R1dBOUT

L1dBIN

6

R1dBIN

L5dBOUT

i.e

R5dBOUT

LCT2

8

RCT2

LCT1

NY

RCT1

L5dBIN

x

R5dBIN

LTOUT

S

RTOUT

LT3

RT3

LT2

RT2

LT1

RT1

RTIN

AVss

Vss

CL

LTIN

Vppb

CE

DI

5-2.

function

[No

[Name

[VO|

Function

LROUT

O

|

Output

terminal

of

fader.

-

|NC

LFOUT

1

|

Intput

terminal

of

fader.

Common

terminal

of

main

volume

control,

fader

volume

control

and

tone

control.

Output

terminal

of

1dB

step

at-

tenuator

of

main

volume

control.

Input

terminal

of

1dB

step

attenu-

ator

of

main

volume

control.

Output

terminal

of

5dB

step

at-

tenuator

of

main

volume

control.

L1dBOUT

L5dBOUT

A-58/68

Function

LCT2,

LCT1

0:

|

Loudness

terminal.

L5dBIN

Input

terminal

of

5dB

step

attenu-

ator

of

main

volume

control.

Output

terminal

of

tone

control.

12~14]

LT3~LT1

Terminal

to

connect

BASS

and

TREBLE

compensation

capacitor

for

tone

control

circuit.

Intput

terminal

of

tone

control.

=

=}

=

oO

-|

Oo

Connect

power

supply.

Chip

enable

terminal.

Data

are

written

in

the

internal

latch

and

each

analog

switch

works

when

"H"

changes

to

"L".

Data

transfer

is

set

enable

when

at

"H".

Input

terminal

for

serial

data

and

clock

for

control.

VDD

CE

18,

19]

Dl,

CL

,

21

|

Vss,

Avss

2

RTIN

23~25

|

RT1~RT3

2

RTOUT

27

|

R5dBIN

8,

29

|

RCT1,

RCT2

30

|

R5dBOUT

|

22

ho

fer)

Connect

each

power

supply.

Intput

terminal

of

tone

control.

Terminal

to

connect

BASS

and

TREBLE

compensation

capacitor

for

tone

control

circuit.

Output

terminal

of

tone

control.

Input

terminal

of

5dB

step

attenu-

ator

of

main

volume

control.

Output

terminal

of

5dB

step

at-

tenuator

of

main

volume

control.

Input

terminal

of

1dB

step

attenu-

ator

of

main

volume

control.

WwW

Output

terminal

of

1dB

step

at-

tenuator

of

main

volume

control.

W W

Common

terminal

of

main

volume

control,

fader

volume

control

and

tone

control.

nN

w

B

is)

2

Intput

terminal

of

fader.

Ww

ol

Ww

o

Output

terminal

of

fader.

17

A-58/68

CIRCUIT

DESCRIPTION

6.

Analog

IC

:

CXA1842S

(X08-

[A/3],

IC7)

6-1.

Block

diagram

A-58/68

WIRING

DIAGRAM

A-58

X

TYPE

wH2

12X09

G/6

|

Fld.

F132

I

aSaSadas

1

WH2

12.

~X09

~G/6

Fi4

F130

F121

}

I

Sasasas

|

'

X14-392X-XX

|

or

|

“Foe

X14-395X-XX

i;

A/I5

|

'

|

DISPLAY

UNIT

AC

POWER

CORD(INLET)

E30-2781

-X5

Fi4

FI3°

-FI2

-F11

C/6s

ALAA?

|

-—1

POWER

TRANSFORMER

AC110-

120/220

1230

-240V~

X09

-404X-

XX

A/6

SUPER

AUDIO.

UNIT

WOOFER

PRE

OUT

omni

*

©

2

PRE

OUT,

©

WH2

12

x09

|

Fig

F132.

FI2,>—s

FUNC

/6

«

I

asSasaSas

|

9

ea

a

3

6-8

0 0

L.—(~

ATA

hea

—-—-{=AJ

a

[riage

ea

"ee

iA

1

CN3.

15

1

CN2

12

1

CNT

12

.

oe

eve

Aw

2)

2

x08

B/3

s

Y

AC

OUTLET

A\rovp

_

Y

TYPE

J2

AC

,OUTLET

ie

OOL

vee

pe

ee

1

aera

wens

We

i

EIS

TA

F607Lo

]

~~,

cE

OWN

AN

AC

POWER

CORD(INLET)

1

J3

|

A

AC

INLET

€30-2779-%5(M

TYPE)

v1

Co

0)

(oO)

G

7

AC

OUTLET

30-2778-¥5(Y

TYPE)

Ave

2)

pec

“A

AC

OUTLET

AN

:

-

SURROUND

SPEAKERS

X08

-264X-XX

A/3

a

NS

SURROUND

UNIT

AC

POWER

CORD(INLET)

ee,

£30-2779-%5

1

WH2

12

X09

“|

Fl4

F130

F12

C/é

1

Sagas

|

—-—!J

POWER

PHOHPHHGOD-—

OF

TRANSFORMER

PLAY

REC

IN

PLAY

REC

AC110-

120/220

IN

OUT

IN

OUT

1230-240V-

MD/DAT

AV

AUX

VIDEO

PHONO

A-68

X08-264X-XX

A/3

9

as

0

WH2

1

[110-120V

220-240

29

°

6

Q

°

A\reo\0

A

SURROUND

UNIT

'

S99

GSGSHOSHG

OG

-

out

IN

OUT

—AUX

MD/DAT

—

CD/LD

VIDEO

X14

D/5

19

20

PC

BOARD

(COMPONENT

SIDE

VIEW)

-XX

X08-2640

SURROUND

UNIT

JAPAN

MADE

M

(A-68)

M

(A-68)

0-01

0-03

wus

EES

SINGAPORE

MADE

MALAYSIA

MADE

A-58

AV

AUX

IN

A-68

VIDEO

D/LD|

PLAY

REC

AUX

A-68

ONLY

VIDEO

PLAY

REC

|CD/LD|

PLAY

REC

|

AUX

MD

DAT

Cc

AV

MONITOR

IN

OUT

IN

—

oe

ee

PHONO

OUT

IN

OUT

|

IN

ane

my

of

a

+

ween

n

aera

=

2

fe)

&

Ww

Pg

E

A

scnscscsscusrersssan

et

sommes

i

eae

-16Q)

(8

CENTER

SPEAKER

(8

SURROUND

SPEAKER

(REAR)

soe

“Taw

Se

ae

Fi

i

ee

Ss

ey

stggeaa

&

Lee

Sd

recep

mammtnes

|g

SSE

ee

a

sRheoronnll

——

Sea

La

L

|

:

2

osaueusununaine

ence

eae

mama

So

tiosieece

an

oa

eh

ee

PE

er

Refer

to

the

schematic

diagram

for

the

values

of

resistors

and

capacitors.

22

Kenwood A-58 User manual

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