Kenwood KRX-593 User manual

STEREO

CASSETTE

RECEIVER

KRX-593/793

SERVICE

MANUAL

KENWOOD

PRINTED

IN

JAPAN

B51-4688-00(MC)

2035

Panel Dressing

plate

tuner

Knob

Dressing

plate

amp

Knob

(A60-0397-01:KRX-793)

{BO3-2838-03)

(K29-5708-02)

(BO3-2839-03)

(K29-4112-03)

(A60-0396-01:KRX-593)

Knob

power

(K29-41

13-04)

Knob

deck

control

(K29-5737-01)

Knob

volume

Knob

x

2

control

(K29-5

738-03)

Knob

b:

MIDBO/AL

TAPE

A

TAPE

B

TUNER

PHONG

co

(K27-2103-04)

(K29-5

709-04)

Phone

jack

{b

j

{

iy

Knob

(E11-0252-05)

L

ar

(K29-5719-04)

ata

a

ae

tee

ae

aa

es

a

el

STEREO

COURLE

CASSETTE

OFC

Dressing

plate

cassette

holder

Dressing

plate

cassette

holder

(BO3-2835-04) (BO3-2835-04)

Knob

Dressing

plate

deck

Knob

{K29-41

21-03)

(B03-2840-03)

(K29-4-121-03)

Knob Knob

deck

control

Knob

eject

x

2

Cassette

holder

(B)

(K29-41

20-03)

(K29-5736-01)

(K29-5722-04)

|

(AS3-1408-02)

Cassette

holder

(A)

Knob

(A53-1407-02)

(K29-4120-03)

Note

Refer

to

X-722

service

manual

(B51-4376-00)

or

X-45/85

Photo

is

KRX-793

service

manual!

(B51-4347-00),

if

need

description

about

*

Refer

to

parts

list

on

page

47.

cassette

mechanism.

KRX-593/793

CONTENTS

ACCESSORIES/REMOTE

CONTROL

UNIT...............04

3

PC.

BOARD...

ccceesisiensaniecibedenmasteeieietencsensteaes

steste

ays

25

CONTROLS

AND

INDICATORS

............ccccesseesereeeeeees

4

SCHEMATIC

DIAGRAM

...........ccceceeeeeesnsneeseeaveneenenes

31

DISASSEMBLY

FOR

REPAIR.............::csesceeserereereeees

6

EXPLODED

VIEW

(MECHANISM)

............c0ecsseeseeneeres

47

BLOCK

DIAGRAM

.............ccccscceceeeeeneneueeeeeeeaeeeseeens

8

EXPLODED

VIEW

(UNIT)..........::cesseeessnereeeeeeenenseeanes

48

CIRCUIT

DESCRIPTION.

...............cecesecesesenseeereuensenes

9

PARTS

LIST.

os

ecveccedes

secacacte

ae

tis

dyetideaencesversaeeteasessars

51

ADJUSTMENT

.....

0c.

.ccccecceceeeeeeeteesersueceeaseeeeesateeenes

20

SPECIFICATIONS.

..........ccccecseneeeeeeenenaneesenens

Back

cover

WIRING

DIAGRAM

...........:.::ccecceeesecureeceeesereesesaerees

23

Rear

panel

Power

cord

Stide

switch

Phono

jack

Metallic

cabinet

AC

outlet*

bushing

(S31-2132-05)

(E63-0009-05)

(A01-3069-11)

(E03-)

(J42-0083-05)

Slide

switch

Phono

jack

($31-2322-05)

(E63-0008-05)

(M

only)

=

a

7

e

O:

wom

a

ee

L

oe

a

biaes

A

CALTON

ATTENTION

A

i

ee

t

bes

f

=e

Mao

Thy

Fugue

wun

CE

EMARS

Cnet

Lock

terminal

board

(E20-0476-05)

we

’

4

"6

(J12-0091-05)

Phono

jack

({E63-0008-05)

Miniature

phone

jack

(E11-0188-05)

PEEVE

UTEP

HITE

ibid

SUUTTE

r

6

Slide

switch

Lock

terminal

board

AC

power

cord*

($31-2095-05)

(E20-

1405-05)

(E30-)

Photo

is

KRX-793

*

Refer

to

parts

list

on

page

47.

KRX-593/793

ACCESSORIES/REMOTE

CONTROL

UNIT

ACCESSORIES

@

AM

loop

antenna...

1

@

FM

indoor

antenna...

1

®

Batteries

(ROG/AA)..

@

Remote

control

unit

...

1

(T90-0174-05)

(T90-0182-15)

(A70-0592-05}

2

BATTERY

COVER

(AQ9-01

12-08)

@

Loop

antenna

stand..

1

@

AC

plug

adaptor.......

1

(J19-3583-04)

(Except

for

some

areas)

{E03-0115-05)

a

FP

REMOTE

CONTROL

UNIT

KENWOOD

REMOTE

CONTROL

UNIT

AY

iS2

See

|

TAPE

B

Som

o

Cassette

Deck

A

operation

keys

Cassette

Deck

B

operation

keys

CD

player

operation

keys

Turntable

operation

keys

Tuner

operation

keys

Graphic

equalizer

operation

keys

VIDE

TUNER

/AUx

Input

select

MUTE

(Muting)

key

keys

TARE

4

TAPE

8

VOLUME

CONTROL

POWER

key

DOWN/UP

key

SLEEP

timer

key

Model

name:

RC-892

Infrared

system

:

KRX-593/793

CONTROLS

AND

INDICATORS

@

Tuner

Stereo

(ST)

indicator

SLEEP

indicator

AUTO

indicator

ON

time

indicator

OFF

time

indicator

Memory

(MEMO.)

TUNED

indicator

Timer

program

No.

indicators

indicator

Band

select

indicators

Frequency

display

Display

SLEEP

timer

key

TUNING

key

POWER

key

Remote

sensor

(DOWN/UP)

P.CALL

key

Numeric

keys

ADJUST

key

BAND

select

key

Preset

channel

keys

EXE.

1

2

key

{Timer

execution)

PROG.

1

key

PROG.

2

key

(Program)

KRX-593/793

CONTROLS

AND

INDICATORS

m@

Amplifier

Tone

control

knobs

BASS

Input

indicators

VOLUME

CONTROL

knob/

TREBLE.

Point

indicator

I

KENWOOD

|

stereo

nrecraTen

AMPURER

KAX-

PHONES

jack

Input

select

keys

SPEAKERS

ON/OFF

key

BALANCE

control

knob

@

Cassette

deck

CRLS

DOLBY

NR

ONE

WAY

indicator

(indicator

PAUSE

MODE

indicator

DUBBING

eooe

RECording

indicators

‘

;

indicator

Deck

A

Deck

B

Tape

transport

Tape

transport

direction

indicators

direction

indicators

Cassette

holder

EJECT

key

EJECT

key

Cassette

holder

(DeckA)

(Deck

A)

(Deck

B)

(Deck

B)

Rewind

key

Fast

foward

PAUSE

key

Ravers

ney

DOLBY

NR

key

play

key

|

Play

key

CRLS

key

Stop

key

ONE

WAY

MODE

key

Dubbing

keys

NOR.

HIGH

Operation

keys

for

deck

B

RECording

key

Operation

keys

for

deck

A

KRX-593/793

*

After

removing

the

case,

perform

disassembly

for

repair

as

follows.

1)

Removing

the

front

panel

1g

2.

Remove

the

nine

screws

(@).

3.

Remove

the

front

panel

in

the

direction

of

arrow.

2)

Removing

the

cassette

mechanism

and

PC

board

1.

.

Disconnect

the

control

cable

from

CN901

and

CN902

.

Remove

the

two

screws

(@),

then

remove

the

PCB

.

Remove

the

two

screws,

then

remove

the

lead

plate

(@).

.

Remove

the

eight

screws

and

two

springs

(@),

then

re-

.

Remove

the

thirteen

screws

(@),

then

remove

the

PC

.

Remove

the

EJECT

knobs

(@).

DISASSEMBLY

FOR

REPAIR

Remove

the

two

knobs

(@),

and

two

screws

(@).

Note:

When

checking

the

electrical

operation,

connect

the

ground

of

front

panel

side

with

the

ground

of

main

side.

Disconnect

the

head

lead

from

CN301

and

CN302

of

PCB-REC/PLAYBACK

(@),

then

cut

the

wire

band.

of

PCB-REC/PLAYBACK

(@).

SP.JACK.

move

the

cassette

mechanism.

boards.

3)

Removing

the

PCB-SW

TUNER,

PCB-TONE,

PCB-PHONE

DISASSEMBLY

FOR

REPAIR

and

PCB-SW

POWER

a

2.

Remove

the

three

screws

(@)

of

frame.

Remove

the

four

screws

(@),

then

re-

move

the

right

frame.

.

Remove

the

three

screws

(®),

then

re-

move

the

PCB-SW

TUNER.

_

Remove

the

two

knobs

(@)

and

six

screws

(@),

then

remove

the

left

frame.

.

Remove

the

two

nuts

(@),

then

remove

the

PCB-TONE.

.

Remove

the

one

knob

(@)

and

two

screws

(@),

then

remove

the

PCB-

PHONE.

_

Remove

the

two

screws

(@),

then

re-

move

the

PCB-SW

POWER.

4)

Removing

the

rear

panel

Ds

2.

Remove

the

seven

screws

(@).

Remove

the

two

hooks

while

moving

the

main

chassis

in

the

direction

of

arrow

(GJ),

then

remove

the

rear

panel

in

the

direction

of

arrow

(@).

5)

Removing

the

repairing

chassis

1.

Cut

the

four

parts

(@)

of

the

repairing

chassis.

(®)

2.

After

repairing,

turn

the

repairing

chassis

180

degree,

then

lock

to

the

main

chassis

by

two

screws

(M3

x8).

®)

KRX-593/793

BLOCK

DIAGRAM

KRX-593/793

SS

SSS

ae

fo)

Er

an

Ta7

or

20721

|-

BNond

Ova

O

|

x

+

ait

(2)

*~

Pg

(0)

W014

"

togs

zoss

440/NO

NOILDZLOUd

waNVIdS

fo)

ao

OAL

b/AVIOOT

£2)

ONOHd

DAL/AWS'Z

KRX-593/793

CIRCUIT

DESCRIPTION

RECEIVER

(AMPLIFIER

TUNER)

SECTION

1.

CONDITIONS

BY

DESTINATION

PLL

(LM7001)

output

port

@

50kHz

H

L

PLL

reference

frequency

Intermediate

frequency

Destination

Receiving

frequency

type

range

Interchannel

space

87.5

~

108.0MHz

50kHz/

100kHz

+

10.7MHz

531

~

1602kHz

1530

~

1610kHz

87.5~

108.0MHz

530

~

1700kHz

10kHz

87.5~

108.0MHz

50kHz

531

~

1602kHz

9kHz

9kHz/10kHz

+

450kHz

9kHz/1OkHz

+10.7MHz

50kHz

+

450kHz

10kHz

+

10.7MHz

5OkHz

+

450kHz

9kHz

100kHz

3.

TEST

MODE

@

Operation

Insert

the

AC

plug

into

the

wall

outlet

while

holding

down

poues

oF

the

selector

TAPE

A

key.

INPUT

TUNER

®

Cancel

MOLE

oF

Press

the

PHONO

key

(lighting

cance!

only)

or

pull

the

AC

BAND

FM

plug

out

of

the

wall

outlet

(reset)

when

ail

indicators

are

lit

2.

INITIAL

STATE

AMP

section

TUNER

section

Receiving

frequency

TUNING

MODE

Preset

state

87.5MHz

AUTO

Test

frequency

TIMER

section

Cloc.

Timer

program

(1)

and

(2)

Execution

mode

0:00

ON

0:00

OFF

0:00

Non-execution

2-1.

Initial

state

setting

The

initial

state

is

set

in

the

following

cases:

1)

When

the

backup

memory

is

erased.

2)

When

the

AC

plug

is

inserted

into

the

wall

outlet

while

holding

down

the

selector

TUNER

key.

2-2.

Test

frequency

in

initial

state

The

frequency

preset

for

each

channel

in

the

initial

state

is

as

shown

in

the

table.

Channel

Frequency

1

98.0MHz

108.OMHz

630kHz

990kHz

1440kHz

1610kHz

(1602kHz)*1

1700kHz

(87.5MHz)*2

87.5MHz

89.1MHz

87.5MHz2

2

3

4

5

6

7

8

9

“41

1602kHz

is

set

for

9kHz

step

only.

*2

87.5MHz

is

set

for

NARROW

band

only.

with

the

power

on.

Contents

The

power

is

automatically

turned

on,

and

fluorescent

dis-

play

indicators

and

LED

indicators

light.

The

fluorescent

dis-

play

indicators

and

LED

indicators

return

to

the

normal

state

when

the

PHONO

key

is

pressed

with

the

indicators

and

power

on.

The

volume

control

motor

drive

test

can

be

per-

formed

in

the

test

mode

with

the

selector

TAPE

B

key.

The

volume

is

increased

when

this

key

is

pressed

with

the

VOLUME

knob

at

minimum.

The

volume

is

decreased

after

about

14

seconds,

then

the

key

is

set

to

off

after

about

14

seconds.

3

;

:

<RX-593/793

CIRCUIT

DESCRIPTION

Q701)

4.

»PD75208CW-AQ7

(PCB-DISPLAY

X14

i

ssor

Iver

microproce

Rece

4-1.

Terminal

connection

diagram

O

be

to

Ee

dé

Sé

ie

*

d<

one

¥

p74

*

,<

a

56

~~

=

ef

b<

®

me

¥

@

55«

d¢

d<

Db

€21G

LINDYID

£3838

AOE-—

AS+

AS—

a

“s

geese

Yos

90S

OLS

OZS

‘Wav?

anhxove

AS'S

LO

tix

ZL

0Sa

tSa

zsa

£50

13934

(6D)0L

(eBoy

la

(LOL

(SOEL

(Ss9)e4

(rD)S1

(29091

(ZO4

(19)

Ba

SL

€Hd/0LL

ZHI/

EEL

tod

72

1"

OHd

YE

tL

{@9)

vs

aaa

Odd

tvd

Zvd

Lwd

Ord

£9d

29d

49d

09d

£€d

zed

Lid

ofd

ZNB4Zd

“uPD75208CW-A97

oZd

OllvEtd

CH

UeS7etd

ZINIZZ

1d

OY)

OLS/SLL

LINZ

L

ld

avOtA

OLNIZOLd

atidA

ey

(6S

zum

(es

boy

(W“Ls

Ou

(68)

9S

os

(®)

(3)sSs

tS

(9)

(2)

(Pp)

L0L0

+

Y

6120

vo

adv.

Lz

AV

138

‘dS

9z¢

ONOW

©

Szy

yIMod

Ei

vz

€z

30vdS'H>

ze

330

M1

Lz

1931040

oz

et

BL

wiva's

)TOULNOD

ae

asne

f

NUSAS

ot

a1LAwW

st

(32.45

ei

viva

pees

€t

79

as

31S

5

NIWay

|

31L0N39

“

2020

3

Ss

v

€

z

ec

SWHOLdIS

10

Kenwood KRX-593 User manual

Popular Stereo Receiver manuals by other brands