Kenwood KR-710 User manual

KENWOOD

HI/Fl

STEREO

COMPONENTS

SERVICE

MANUAL

KR-710

(KR-710L)

item

adjustment

written

three

languages

—

English,

French

and

German.

article

sur

réglages

est

écrit

trois

langues,

Anglais,

Francais

Allemand.

Ein

Artikel

der

Abgleich

wird

auf

drei

Sprachen,

Englische,

Franzdsisch

und

Deutsch

geschrieben.

Photo

KR-710

STEREO

RECEIVER

CONTENTS

EXTER

NAG

VIEW

iiss

costes

ees

ten

desea

INFERNAL

VIEW

scccaciescncniieisiimat

oro

eet

BLOCK

LEVEL

DIAGRAM.............0.0..

eters

DIAL

‘CORD

STRINGING

hieeiiiien

hice

are

cssenn

otis

esate

ated

eens

roe

onion

EXPLODED

VIEW

teriekcine

ened

wae

ADJUSTMENT/REGLAGES/ABGLEICH

|...

GOAR

oes

SCHEMATIC

DIAGRAM

(KR-710)

....00.00

res

SPECIFICATIONS

(KR-710)

...........

cece

ccc

cece

eee

ees

SCHEMATIC

DIAGRAM

(KR-710L)

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

cece

etree

eee:

SPECIFICATIONS

(KR-710L)

2.0.0.0...

neee

reece

arenas

PARTS

UST

sci

eee

Photo

KR-710L

Note:

Component.

and.

circuitry.

are.

‘subject

to.

modification

insure

best

operation

under

differing

jocal:

conditions.

‘This.

‘manual

based

on,

the

(K)

standard,

and

prov

des

information:

regional,

circuit

modifi

catio

rough

use

alternate

schematic

diagrams,

and

information

‘on

regional

;

Hoe

pen

sieeenee

bestared

eens

eoeenee

Seas

teh

tweens

20x

Pasewesesegentes

ers

rerescereese

ernest

see

Tyee

amere

ere

eee

err

eee

ORs

sesetsesevidecseenenseussessedonenanees

peg

tte

;

Engisad

ween

ERT

OHA

ATO

ORE

REESE

GERAD

teerenseesenenee

onrewne

‘ane

KR-710

EXTERNAL

VIEW

Dial

pointer

ass’y

Knob

(B21-004

1-05)

({K27-0132-04)

Dial

calibrations

(B20-0463-04)

KR-710

STEED

ECE

Knob

{K23-0339-04)

(K23-0347-04)

Knob

(K27-0132-04)

Knob

(K27-0136-04

Phone

jack

Knob

(E11-0074-05)

(K23-0348-04)

GND

terminal

out

let*

‘

(NQ8-0128-35)

(EQ3-)-

Antenna

terminal

Slide

switch*

(E20-0439-05)

{S31-)

Phono

jack

Power

cord®

Foot*

{E13-0612-05)

(E30-)

(JO2-)

Phono

jack

terminal

{E13-0423-05)

{E20-0813-05)

*Refer

parts

list.

(P17)

PHOTO

KR-710.

INTERNAL

VIEW/BLOCK

LEVEL

DIAGRAM

Power

transformer*

Receiver

PCB

ass

'y*

Power

amp

section

(LO1-)

(X14-)

Front

end*

Power

supply

section

{(W02-)

Tuner

section

Power

amp

section

Phono

section

*Refer

parts

list.

(P17)

PHOTO

KR-710L.

BLOCK

LEVEL

DIAGRAM

type.

Ceramic

‘te

LPF

1C2

TUNING

CIRCUIT

er:

peer

(FT

Q—

ats

fee

PHONO

TAPE

TAPEA

HIGH

FIL

LouNess

VOLUME

BALANCE

coe

aKERS

Prono

S198

-O-81+-

WOO

-#-#

C5,

OCt«SS

—rec

—

[

LPLAY

TAPE

r—

REC

Leay

I4.9V/8N

39.948

2.35mV

DIAL

CORD

STRINGING

/REPAIR

DIAL

CORD

STRINGING

Tie

the

dial

cord

the

dial

spring.

Set

the

dial

pulley

illustrated.

Hook

the

dial

spring

the

boss

starting

from

its

lower

side.

starting

from

its

upper

side.

Tie

the

end

the

dial

cord

the

dial

spring.

Remove

the

dial

spring

from

the

boss

Receive

MHz

signal,

and

then

mount

the

dial

pointer

the

MHz

position

the

dial

calibrations.

POWER

TRANSISTOR

REPLACEMENT

Mica

plate

Inslating

bushing

{F29-0030-00)

Hexagon

bolt

(NO9-0298-08)

Dress

the

dial

cord

the

direction

through

Wind

the

dial

cord

two

turns

around

the

dial

shaft

Dress

the

dial

cord

the

direction

Wind

the

dial

cord

two

turns

around

the

dial

pulley

Boss

Dial

spring

EXPLODED

VIEW

M318

(Bre—Tap)

M3x14

(@r—Tap}

M4356

—

Tap}

M3x8

(Or—

Tap)

’

M318

{6r—Tep)

Refer

Parts

List

page

17.

(F-Tap}

:-N88-3006-46

-N30-3008-46

(Bi-Tap)

BLK

:N89-3008-45

W3x%8

(Bi~Tap?

BLK

M3xe

(8r—-Tap)

(8r-Tap)

(Br-Tap)

43x78

(Or

~Tap)

M38

i6r—Tap)}

KR-710

:N87-3008-46

M48

(Br-Tap})

§:N87-4008-46

:-N87-3014-46

:N30-3020-46

KR-7

100

ADJUSTMENT

(TUNER)

TEST

EQUIPMENTS

RECEIVER

OUTPUT

ADJUSTMENT

SSO

CONNECTION

SETTING

INDICATOR

POINTS

DISCRIMI-

MHz

FM-MONO

MHz

“

penn

ditto

kHz,

+75

kHz

Dev

ditto

60 dB

(ANT

input)

DISCRIMI-

Minimum

NATOR

(3)

Frequency

EM-

counter

the

junction

kHz

VCO

ditto

AUTO/MUTE

R22

and

VRS

VRQ

+200

MHz

via

voltmeter

MHz

kHz,

+68.25

kHz

Dev

reas

Minimum

IFT

eres

(Front

end)

distortion

(ANT

input)

SEPARA-

. . .

O00

kHz

Maximum

folm

400

Hz,

30%

Mod

000

kHz

TRACKING

600

kHz

TRACKING

400

kHz

TC1,

sae

(2)

400

Hz.

30%

Mod

400

kHz

(Front

end)

000

kHz

Maximum

600

kHz

Gece

ditto

400

Hz,

30%

Mod

600

kHz

ditto

400

kHz

400

Hz,

30% Mod

400

kHz

ditto

160

kHz

asia

400

Hz,

30%

Mod

160

kHz

ditto

MHz

Dev

{ANT

input)

Bar

antenna

(A)

ditto

TC1,

(Front

end)

aio

Bar

antenna

(B)

340

kHz

*1~4:

See

page

10.

ditto

REGLAGES

(TUNER)

REMARQUES

APPAREILLAGE

ALIGNEMENT

!rRaccorp-

SECTION

DISCRIMI-

MHz

FM-MONO

NATEUR

(1)

kHz.

+75

kHz

Dév

MHz

Spat

idem

kHz,

+75

kHz

Dév

60 dB

(Entrée

ANT)

DISCRIMI-

Distorsion

Relier

OSCIELA-

MHz

EM:

sepa

kHz

TEUR

idem

Dév

AUTO/MUTE

“\

Bone

VRQ

Reeatrs

kHz

(Entrée

ANT)

voltmétre

CA.

TFi

(+6.75

kHz

Dév)

60 dB

(Entrée

ANT)

Deel

SELECTION:

Lou

Signal

pilote

Distorsion

(Partie

frontale)

minimale

SECTION

(KR-710)

[ole

wih

[wenn]

wate

atte

[an

wre

ate

Late

SECTION

(KR-710L)

TFI

000

kHz

Déviation

400

Hz.

30%

Mod

000

kHz

maximale

MW-

600

kHz

Antenne

ALIGNEMENT|

‘e™

400

Hz,

30%

Mod

(A),

MW.

400

kHz

TCi2>

aca

ALIGNEMENT

400

Hz,

30%

Mod

400

kHz

(Partie

frontale)

LW-

160

kHz

Antenne

spans

ALIGNEMENT

400

Hz,

30%

Mod

160

kHz

(B),

LW-

340

kHz

1~4:

Voir

page

10.

idem

KR-7

101

ABGLEICH

(EMPFANGER)

STEUR-

ABGLEICH

PRUFEINRICHTUNG

GERAT

AUSGANGS.-

EINSTELL-

BEMER-

EINSTEL-

PUNKT

KUNGEN

ANSCHLUSSE

EINSTELLUNG

LUNG

UKW-EMPFANGSABTEILUNG

DISCRIMI-

MHz

FM-MONO

NATOR

(1)

kHz,

+75

kHz

Hub

MHz

DISKRIMI-

kHz,

+75

kHz

Hub

dito

NATOR

(2)

(Eingangs-

signalpegel)

DISKRIMI-

Minimaler

ee)

NATOR

(3)

Klirrfaktor

Frequenzzahier

zum

Kreuzungs-

SPANNUNGS-

ante

FM-

punkt

von

GEREGELTER

dito

AUTO/MUTE

R22

und

VR9

VRQ

60 dB

(Eingangs-

uber

einew

OSZILLATOR

signalpegel)

Wechsel

spann-

ungsmesser

kHz,

+68,25

kHz

Hub

Wahler:

Loder

Pilotton:

(+6.75

kHz

Hub)

60 dB

(Eingangs-

signalpegel)

Minimaler

Klirrfaktor

STEREO

KANAL

TRENNUNG

MW-EMPFANGS

ABTEILUNG

(KR-710}

000

kHz

Marimaler

600

kHz

dito

L1,2

(1)

400

Hz,

30% Mod

600

kHz

‘

(2)

400

Hz.

30%

Mod

400

kHz

(Frontende)

UND

EMPFANGSABTEILUNG

(KR-710L)

O00

kHz

600

kHz

400

Hz.

30%

Mod

erritantenna

(A)

TCT

(Frontende)

Ferritantenna

(B)

ans

1~4:

Sehen

den

page

11.

EMPFANGS-

BEREICH

(1)

MWw-

EMPFANGS-

BEREICH

(2)

LW-

EMPFANGS-

BEREICH

(1)

LW-

EMPFANGS-

BEREICH

(2)

dito

600

kHz

400

kHz

400

Hz,

30%

Mod

400

kHz

dito

160

kHz

400

Hz,

30%

Mod

160

kHz

340

kHz

400

Hz,

30%

Mod

340

kHz

KR-7

1011)

ADJUSTMENT

(TUNER)/REGLAGES

(TUNER)/ABGLEICH

(EMPFANGER)

Minimum

output

Adjust

the

tuning

knob

that

the

same

Nice

compromise

adjustment

may

required

left-to-right

and

amount

noise

observed

the

top

and

right-to-left

separations

are

unequal.

bottom

the

output

waveform

with

weak

fronted

signal.

The

front

end

section

completely

adjusted

the

factory

and

further

adjustment

not

necessary.

When

the

Connect

the

voltmeter

across

R6.

front

end

section

cannot

repaired

replacing

semiconductors,

replace

the

front

end

PCB

ass'y

and

the

following.

(1)

Set

FM-SG

MHz,

kHz

Mod,

+75

kHz

Dev,

and

connect

the

antenna

terminal

the

receiver.

(2)

Receive

the

FM-SG

signal.

Ole

Veale:

(3)

Fix

the

dial

pointer

MHz.

Sortie

minimale

Ajuster

bouton

d’accord

facon

que

Ses

Beit

sortie

droit

diaphonie

gauche

sont

cieest

méme

quantité

bruit

puisse

étre

observe

pas

méme

regler

potentiometre

ajustable

pour

que

ten-

sommet

bas

forme

donde

sion

sortie

est

méme.

sortie

sous

des

conditions

d’alimentation

*§

signal

faible.

partie

frontale

peut

pas

étre

réparée

rempla-

cant

les

semi-conducteurs

PCB

partie

frontale

effec-

Relier

voltmétre

C.C.

sur

R6.

tuer

les

opérations

suivantes:

(1)

Régler

FM-SG

MHz,

kHz

Mod,

+75

kHz,

connecter

ala

borne

d’antenne

récepteur.

(2)

Recevoir

signal

FM-SG.

(3)

Fixer

l'aiguille

cadran

MHz.

Voltmétre

C.C.

VR9

Compteur

frequence

terre

R22

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