Kenwood KX-58W Manual de usuario

STEREO

CASSETTE

TAPE

DECK

KŁ58W/s8GWw

|NENWOO

SERVICE

MANUAL

PRINTED

JAPAN

B51-3792-00(T)2722

Knob

(POWER)

Cassette

lid*

Dressing

plate

Tape

counter

Cassette

lid*

Metallic

cabinet*

(K27-1965-04)

(A53-1098-03)

(B03-2571-04)

(B35-0036-05)

(A53-1099-03)

(A01-1739-01)

ENWOOD

sten

oouets

cas

perre

cece

kx-aaćw

»——

Phone

jack

(3P)

Knob

(OPERATION)*

Slide

switch

Knob

(OPERATION)

Panel*

(E11-0162-05)

(K29-3582-03)

(S31-1017-05) (K29-3582-03)

(A20-5752-02)

Knob

(REC

BALANCE,

REC

LEVEL)

(K29-3591-04)

GOD

Phono

jack

(4P)

inlet*

(E13-0446-05)

(EO3-)

Foot

(J02-0161-04:Front)

(J02-0366-15:Rear)

*Refer

Parts

List

page

35.

Photo

KX-58CW.

KX-58W/58CW

CONTENTS

AGCESSRIES

CONTROLS:

INDICATORS

nennen

DISASSEMBLY

FOR

REPAAIR

BLOCK

LEVEL

DIAGRAM

nes

nei

CIRCUT

DESCRIPTION

unse

aa)

MECHANISM

DESCRIPTION

ADJUSTMENT.

„use

REGLAGES

een

ABGEEJCH

ies

Accessories

Audio

cord

ADJUSTMENT/REGLAGES/ABGLEICH.........................

VOLTAGE

TABLES:

Zus.

P:C

BOARD

«rush

ten

OWA

lee

doco

SCHEMATIC

DIAGRAM........

eerie

EXPLODED

VIEW

(MECHANISM)...

EXPLODED:

VIEW

(UNIT)

iic

ets

PARTS:

LIST

SPECIFICATIONS.

sde

ett

eren

Back

cover

KX-58W/58CW

CONTROLS

INDICATORS

PEAK

LEVEL

METER

DUBBING

keys

NORMAL,

HIGH)

These

keys

are

used

when

performing

tape-to-tape

dubbing.

OFF

[oes

system]

KX-58W

DOLBY

switch

COUNTER/RESET

key

This

key

used

reset

the

counter

“000”.

O—

DUBBING

—

ORECB

NORMAL

HIGH

RELAY

l50(8v

REC

BALANCE

REC

LEVEL

Press

this

key

perform

relay

play.

CENTER

BOFFC

AEN

DOzoerscna]

zen

sel

KX-58CW

REC

LEVEL

control

knob

This

knob

used

adjust

the

record.

ing

level.

‘

This

switch

used

select

the

Dolby

noise

reduction

among

‘’B’’,

''C''

and

“OFF”

positions.

(KX-58CW)

This

switch

used

turn

the

Dolby

noise

reduction

and

OFF.

(KX-58W)

REC

BALANCE

control

knob

This

knob

used

adjust

the

balance

the

recording

level

between

L-

channel

and

R-channel.

POWER

switch

KENWOOD

STEREO

DOUBLE

CASSETTE

DECK

KX-5BCW

PEAK

LEVEL

METER

O—

DUBBING

—Q

orce

NORMAL

HIGH

RELAY

EEE

CENTER

7.89

DOLBY

REC

BALANCE

REC

LEVEL

PLAY

BACK

DEEE)

Eject/Stop

(A/M)

key

When

the

deck

operating,

pressing

this

key

stops

operation,

and

pressing

again

opens

the

cassette

holder.

Fast

forward

(>>)

key

PHONES

jack

(KX-58CW

only)

Rewind

(<<)

key

Play

(>)

key

KX-58CW

PAUSE

(II)

key

Eject/Stop

(A/m)

key

Fast

forward

(>>)

key

Rewind

(<4)

key

Play

(>)

key

REC

key

KX-58W/58CW

DISASSEMBLY

FOR

REPAIR

*Take

out

the

case

beforehand.

Remove

the

three

screws

and

undo

the

three

catches

©.

then

detach

the

dressing

panel.

Press

the

EJECT

button,

then

detach

the

cassette

lid

from

the

cassette

holder.

Detach

the

two

knobs

Remove

the

two

screws

and

undo

the

two

catches

then

put

out

the

sub

panel

towards

you.

Disengage

the

tape

counter

belt

the

EJECT

mode,

remove

the

eight

screws

installing

the

mechanism,

then

take

out

the

mechanism

the

direc-

tion

arrow

©.

Undo

the

five

catches,

then

detach

the

switch

board

QD.

KX-58W/58CW

BLOCK

LEVEL

DIAGRAM

—

5.5dBs

—

9dBs

411mV

275mV

WO2-0693

CUT

ooer

©)

LINE

out

LINE

(X)

MUTE

(KX-58W)

P.B

EQ.SW

LINE

NEA

DEMONE

72dBs

FILTER

HEAD

011,12

0.19mV

PHONE

DECK

REC/P.B

#+>H

HEAD

REC

LEVEL

CONTROL

BUFFER

CIE

AMP

BALANCE

R/P

CONTROL

VR6,7

BIAS

REC

EQ.

LEVEL

inr

AMP

VR9,IO

024

DECK

L3,4

07,8

(X)

SPEED

MECHANISM

VRS,6

MUTE

ADJ.

MOTOR

019

DECKB

BIAS

ERASE

A.B

MECHA

HEAD

IC8,

[—

PLAY

REC

EQ.SEL

com

Q20,21

BIAS

BLAS

MECHA

SELECTOR

022,83

REC.

SPEED

MECHANISM

ADJ

MOTOR

Q23

VRIII2

KX-58W/58CW

CIRCUIT

DESCRIPTION

FUNCTION

COMPONENTS

Recording/Playback

unit

(X28-1980-10-11)

Components

Use/Functions

Operation/Condition/Compatibility

LA3246

Playback

uPC1330HA

Head

(Deck

Controlled

IC3.

becomes

recording

and

playback.

LM6416F-2227

Microprocessor

IC4

HA12136

Dolby

KX-58W

only.

uPC7818HF

+18

AVR

M51951ASL

Reset

M5218P-A

REC

amplifier

constant

determined

IC8

and

IC9

ob-

NJM4565D

tain

the

recording

equalizer

property.

IC8,9

BA6251

selection

Pins

1-7

IC8

(IC9)

serve

control

the

respec-

tive

equalizer

devices:

IC10

TD62554S

REC

selector

Controlled

029,

O16

and

Q17

control

IC8

and

IC9.

IC11

AN6888

Meter

5-point

display

x2...

—10,

—6,

+3,

IC12

M5218P-A

MPX

buffer

NJM4565D-D

01,2

2SC1740S

(Q,R)

Playback

output

(Deck

Controlled

Q15.

when

deck

played

2SC945(A)

(O,P)

and

OFF

when

deck

played.

03,4

2SC1740S

(Q,R)

Playback

output

(Deck

Controlled

015.

when

deck

played

2SC945(A)

(Q,P)

and

OFF

when

deck

played.

05,6

2SC1740S

(Q,R)

Playback

high-frequency

compensation

Controlled

Q16.

Normally

ON.

OFF

only

2SC945(A)

(Q,P)

(Deck

high-speed

dubbing

decrease

playback

high-

frequency

compensation

amount.

Q7,8

28C17408

(O,R)

REC

muting

Controlled

027.

other

than

recording

2SC945(A)

(Q,P)

mute

the

recording

system

signal.

09,10

2SC2878(B)

Line

muting

Controlled

028.

other

than

playback

mute

the

line

system

signal.

011,12

25C1845

(F,E)

Headphone

amplifier

Q13,14

2SC1740S

(Q,R)

Playback

120

4/70

Controlled

Q15.

Q13

turns

when

deck

2SC945(A)

(Q,P)

played

and

O14

turns

when

deck

played.

Q15

28C17408

(Q,R)

Playback

120

4/70

inverter

Controlled

IC3.

when

deck

2SC945(A)

(Q,P)

played

and

OFF

when

deck

played.

Q16

2SC1740S

(Q,R)

Playback

inverter

only

high-speed

dubbing.

Otherwise

OFF

2SC945(A)

(Q,P)

Q17

2SC1740S

(Q,R)

speed

inverter

Controlled

Q16.

OFF

normal

dubbing

and

2SC945(A)

(Q,P)

high-speed

dubbing.

018

2SC2003

(L,K)

Dolby

AVR

control

transistor

Converts

signal

system

into

Dolby

Q19

2SD863

(E,F)

Bias

OSC

Oscillates

105

kHz.

020

2SC3246

Bias

current

METAL

recording

metal

tape

021

2SC3246

Bias

current

CrO?

recording

CrO2

metal

tape

022

2SC3246

Bias

recording

turn

the

bias

oscillation

023

2SC1740S

(Q,R)

2SC945(A)

(Q,P)

Bias

soon

power

Q24

2SC733(A)

(Q,P)

2SC933SC

(Q,R)

mechanism

speed

control

high-speed

operation

€

KX-58W/58CW

CIRCUIT

DESCRIPTION

Components

Use/Functions

Operation/Condition/Compatibility

2SA733(A)

(Q,P)

2SAY33S(O,R)

REC

mut

Controlled

IC3.

other

than

recording.

2SA733(A)

(Q,P)

2SA933S(Q,R)

Line

mute

Controlled

IC3.

other

than

playback.

2SA733(A)

(Q,P)

2SA933S(Q,R)

REC

mute

Controlled

Q25.

other

than

recording.

2SA733(A)

(Q,P)

2SA933S(Q,R)

Line

mute

Controlled

Q26.

other

than

playback.

2SC1740S(Q,R)

2SC945(A)

(0,P)

Tape

selector

with

metal

tape

loaded

deck

2SC3246

motor

Controlled

IC3.

case

relay

play,

OFF

until

the

end

the

tape

deck

reached,

and

when

reached.

2SA733(A)

(0,P)

2SA933S(Q,R)

motor

control

high-speed

operation

2SD863(E,F)

Microprocessor

AVR

Converts

for

mechanism

for

microprocessor.

25D822(0,P,E)

Components

Mechanism

AVR

Electric

circuit

module

(W02-0693-05)

Use/Function

Converts

for

mechanism

the

obtained

halfwave

rectification

IN.

Operation/Condition/Compatibility

HA12088ANT

DOLBY

B/C

noise

reduction

KX-58CW

only.

KX-58W/58CW

CIRCUIT

DESCRIPTION

MICROPROCESSOR

LM6416F-2227

Operational

specification

The

KX-58W/58CW

mechanism

logic

double

deck

using

Relay

operation

two

mechanisms

made

GIKEN.

Its

circuit

control

per-

Relay

playback

(only

once)

from

deck

formed

microprocessor

use

inputs

from

mechan-

Timer

operation

ism

attached

switches

and

tact

switches.

Timer

playback:

decks

and

either

possible

Timer

recording:

deck

only

1-1

Functions

(1)

Features

(2)

Microprocessor

controlled

subjects

One

way

X2,

double

cassette

Selector

circuits

such

recording/playback,

deck

Deck

playback

only

AIB,

etc.

Deck

recording

and

playback

Dolby

Dubbing

Bias

oscillation

circuit

Deck

normal

speed

dubbing

LED

indication

Deck

high

speed

dubbing

BRP

PDo

PC3

BIAS

PD:

PC2

BCPM

R.MUTE

PD2

PCI

KSO

L.MUTE

PD3

PCo

KSI

EXtal

PA3

Xtal

Paz

KRZ

TEST

INT

PAI

KRI

RESET

RES

PAo

KRO

AHI

REo

Voo

PE!

PGo

HISP

CHI

PE2

PFs

L.DUB

PEs

PF2

LHDB

TEST

PFi

RLY

Vss

PFo

LREC

1-2

Functions

name

Designation

Description

PDo

BRP

REC/PLAY

selector

PD1

BIAS

control

PD2

RMUT

REC

MUTE

control

PD3

LMUT

LINE

MUTE

control

EXtal

Xtal

Oscillator

INT

Test

mode

setting

Normal

RES

RESET

input

Normal

PEo

AIB

select

PE1

Dolby

ON/OFF

PE2

Dolby

B/C

PE3

Dolby

REC/PLAY

TEST

Connected

GND

(LSI

test

pin)

Vss

Connected

GND

KX-58W/58CW

CIRCUIT

DESCRIPTION

name

Designation

Description

PFo

LREC

REC

LED

PF:

LRLY

Relay

LED

LHDB

high

speed

dubbing

LED

: :

LDUB

Normal

speed

dubbing

LED

: :

HISP

Motor

speed,

speed

select

Normal

Connected

Key

input

without

input

with

input

Key

scan

output

motor

ON/OFF

N.C.

(OPEN)

1-3

Keys

This

unit

turns

ON/OFF

the

mechanism

operation

because

using

mechanism

logics.

Its

circuit

control

performed

with

inputs

leaf

switches.

Name

Operation

PLAY

mechanism)

Decks

A/B:

selected

when

head

mechanism

Line

mute

turns

and

0.5

sec

later,

OFF.

ascends.

gnored

when

deck

recording

except

for

dubbing.

Decks

A/B:

selected

Line

mute

turns

and,

case

during

play

deck

OFF

0.5

sec

later.

gnored

when

deck

recording

except

for

dubbing.

main

motor

ON.

PLAY

mechanism)

(1)

Normally

when

head

mechanism

ascends.

Decks

A/B:

selected

Line

mute

turns

ON,

and

0.5

sec

later,

OFF.

gnored

when

deck

play.

Decks

A/B:

selected

Line

mute

ON.

Ignored

when

deck

play.

(2)

For

recording

(not

dubbing)

Line

mute

and

recording

mute

turn

ON,

and

O.5

sec

later,

OFF.

OFF

Line

mute

and

recording

muter

ON.

Bias

OFF.

(3)

For

dubbing

Line

mute

and

recording

mute

turn

and,

when

deck

play,

OFF

O.5

sec

later.

OFF

Recording

mute

ON.

Line

mute

unless

deck

play.

Bias

OFF.

KX-58W/58CW

CIRCUIT

DESCRIPTION

Operation

(1)

Normally

REC/PLAY:

REC

selected,

Decks

A/B:

selected

Bias

and

REC

LED

ON.

Ignored

when

deck

play.

REC/PLAY:

PLAY

selected,

Decks

A/B:

selected

REC

LED

OFF.

Ignored

unless

REC

engaged.

REC

mechanism)

when

REC

key

pressed

(with

cassette

hub)

(2)

For

dubbing

REC/PLAY:

REC

selected,

Decks

A/B:

selected

Bias

and

REC

LED

REC/PLAY:

PLAY

selected.

REC

LED

OFF.

Effective

only

when

PLAY

and

REC

are

both

OFF.

Dubbing

LED

ON.

High

speed

dubbing

LED

and

relay

LED

OFF.

Effective

only

when

PLAY

and

REC

are

both

OFF.

High

speed

dubbing

LED

ON.

Dubbing

LED

and

relay

LED

OFF.

Effective

only

when

PLAY

and

REC

are

both

OFF.

Relay

LED

and

motor

OFF.

High

speed

dubbing

LED

and

dubbing

LED

OFF

Dubbing

key

High

speed

dubbing

key

Relay

key

1-4

Operation

Key

handling

Operation

Press

the

dubbing

key.

Dubbing

LED

Let

deck

play

and

set

PLAY

Dubbing

(including

ON.

Decks

A/B:

selected

Line

mute

OFF

0.5

sec

later.

High-speed

mode)

Press

the

REC

key

deck

and

set

the

REC

and

PLAY

ON.

REC/PLAY:

REC

selected.

Dolby

OFF.

Bias

ON.

Speed

high

for

high-speed

mode.

Line

mute

and

recording

mute

turn

O.5

sec

later.

Dubbing

starts.

Press

the

relay

key.

Relay

LED

and

mechanism

motor

OFF.

Let

deck

play

and

set

PLAY

ON.

Decks

A/B:

selected.

Line

mute

OFF

0.5

sec

later.

mechanism

motor

OFF.

Relay

play

Press

the

PLAY

key

deck

Although

the

PLAY

key

deck

locked,

since

the

motor

OFF,

the

head

does

not

ascend

and

the

PLAY

deck

thus

remains

OFF.

Deck

stops

(as

tape

end

reached

operation

key

handled)

mechanism

motor

and

thus

PLAY

deck

Decks

A/B:

selected.

Line

mute

OFF

0.5

sec

later.

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