Kenwood A-711 User manual

FM/AM

STEREO

RECEIVER

A-711/711L

SERVICE

MANUAL

COMPACT

HIFI

SYSTEM

UD

COMPONENT

SYSTEM

UD-7)

KENWOOD

PRINTED

IN

JAPAN

B51-4166-00(T)3452

Front

glass

,

(B10-1093-04}

Knob

ass’y

{VOLUME

CONTROL)

{K29-3997-04)

Metallic

cabinet

(AO1-1866-01)

Knob

(N.

B,

CIRCUIT)

Knob

(BALANCE)

Panel

ass’y

{K29-3959-04}

(K29-3960-04)

(A20-)

*

|

Miniature

phone

jack

(PHONES)

Remote

controller

ass’y

(E11-0200-05)

(A70-0367-05)

Slide

switch

(DE-EMPHASIS,

CHANNEL

SPACE)

AC

power

cord

(S31-2094-05)

*

(E30-)

*

Lock

terminal

board

(ANTENNA)

(E20-)

*

aed

Power

cord

bushing

(J42-0083-05)

Lock

terminat

board

(4P}

(SPEAKERS)

{E20-0453-05)

ISQUE

OE

CHG

ELECT.

eas

Dura

3)

Yrawte

sarap,

s

TO

ee

GR

SYSTEM

e

bs

FANUAL

FUR

COBMECTION.

‘

pe

é

Raf,

B

STM:

a

:

(

i

Ee

Leal

arias

i

4

-e.

#

;

a

1

Phono

jack

(1P)

(SUPER

WOOFER)

Cushion

x

4

(E13-0138-05)

{G14-201

7-04)

Rectangular

receptacle

Phono

jack

(SURROUND)

*

{E08-

1508-05)

(E13-0249-05)

*Refer

to

parts

list

on

page

46.

Ee

:K,P,

Y,M,

X

=)

Photo

is

A-711.

A-711L:

T,

E

type

A-711/711L

CONTENTS

NOTES

REGARDING

SERVICES

OF

THIS

UNIT

AND

,

PEATURES

OF

SYSTEM

eisastotsucnsvebitsarns

Ruloractsient

2

PACKING

SYSTEM

CONNECTIONS

CONTROLS

AND

INDICATORS

OPERATION

OF

REMOTE

CONTROL

UNIT

DISASSEMBLY

FOR

REPAIR..

BLOCK

DIAGRAM

CIRCUIT

DESCRIPTION..

ADJUSTMENT

....

PC

BOARD

(Component

side

view)..

..

29

SCHEMATIC

DIAGRAM

..............00

.

35

EXPLODED

VIEW

...

44

PARTS

LIST

.

46

SPECIFICATIONS

2.37.

vcs

scetcoccststrcevnaducdevce

devas

Back

cover

NOTES

REGARDING

SERVICES

OF

THIS

UNIT

AND

FEATURES

OF

SYSTEM

1.

Be

sure

to

refer

to

the

instruction

manual

of

UD-7

of

this

system

for

the

operation.

2.

This

unit

is

the

receiver

that

is

mounted

with

tuner

and

am-

plifier.

However,

as

INPUT

SELECTOR

IC is

incorporated

into

.

the

graphic

equalizer

(GE-711)},

signal

system

goes

through

the

graphic

equalizer.

Therefore,

radio

waves

‘cannot

be

received

with

this

unit

alone.

‘

When

you

listen

to

radio

waves

with

this

unit

alone,

con-

-

nection

must

be

made

by

the

following

method:.

a)

Facilitated

connection

method,

or

b)

Regular

connection

method.

;

{instead

of

tuner

output,

AG

output

can

also

be

connected

to

X09

side)

: ‘

a)

Facilitated

connection

method

{It

can

be

connected

at

once

after

case

is

opened)

*

:

Cennect

the

output

TP7{Lch}

and

TP9(Rch)

of

the

tuner

board

(X05,

A/6)

with

the

test

TP1{Lch)

and

TP3(Rch)

of

main

board.

(X09)

(B/5).

<Fig.

1>

(Output

decreases

©

partly

because

of

the

relation

with

Input

impedance)

Regular

connection

method

(Refer

to

disassembling

method

for

repair}

;

Connect

the

output

TP7{Lch}

and

TP9(Rch)

of

the

tuner

b

<Fig..

1>

U

TPBIGND}

TPSIR

ch}

board

(X05.

A/6)

which

stands

against

the

rear

wall

with

lead

wire

(for

input}

of

R41(Lch)

and

R2{Rch)

of

main

board

{X09)

(A/S)

which

is

installed

below

the

tuner

board.

With

__

this

operation,

action

of

the

surround

circuit

which

cannot

be

checked

with

procedures

of a)

for

output

can

be

checked.

~

osx"

Fig:

2>-(Be

sure

to

connect

the

GND

of

tuner

board

(X05.

A/6)

for

activating

the

microprocessor

normally

with

GND

of

chassis

this

time)

3.

The

small

radiator

cover

is

attached

to

this

unit.

Use

it

to

check

power

transistors

and

so

on

by

removing

it.

In

addi-

tion,

the

main

board

can

be

checked

by

removing

the

bot-

tom

board

after

detaching

the

case

from

the

unit.

(For

further

detail,

refer

to

the

disassembly

method

for

repair)

4.

As

anew

function,

one

pattern

of

graphic

equalizer

has

be-

come

able

to

be

selected

and

stored

into

memory

at

each

INPUT

SELECTOR.

The

memory

can

be

conducted

by

GE

-

microprocessor.

The

REC

level

set

by

CRLS

at

each

INPUT

SELECTOR

{excluding

TAPE)

can

also

be

stored

into

memory.

The

memory

can:

be

conducted

by

DECK

microprocessor.

A-711/711L

NOTES

REGARDING

SERVICES

OF

THIS

UNIT

AND

FEATURES

OF

SYSTEM

6.

LED

for

VOLUME

(Part

number:

B30-1284-08}

It

is

basically

the

LED

for

volume,

which

serves

as

one

part

of

master

VOL

ass’y

(R29-5042-05).

However,

the

LED

can

be

easily

removed

with

tweezers

after

removing

the

volume

thumbscrew

when

LED

malfunctions.

e

Ai

TIMER,

timer

for

wake-up,

increases

its

volume

ev-

ery

30

seconds

at

three

stages.

Although

its

main

microprocessor

is

the

GE

microprocessor,

it

functions

in

connection

with

the

tuner

and

amplifier

of

unit.

(This

time,

A|.

LOUDNESS

of

GE

is

not

subject

to

operation)

©

Al

TIMER2,

timer

for

wake-up,

playbacks

the

first

and

second

track

of

CD,

then

receives

the

radio

broadcast-

ing

automatically.

seas

ancatt

5.

The

A1,

sensor

for

remote-control

light

receptor,

of

XO5

uses

initially

WO2-1049-05

and

uses

W02-1048-05

thereafter.

They

can

be

installed

on

printed

board

even

though

their

shapes

and

the

location

of

terminals

are

different

from

each

other.

7.

Exchange

the

fuse

resistance

mounted

on

the

printed

board

of

power-source

transformer

for

a

new

one

after

removing

the

transformer

and

putting

it

on

the

side

of

the

set.

°-

oO

’j7

&

{XO5-399X-XX)

4C/6)

(WO2-1048-C5}

es

antenna

(T90-0176-05)

Remote

controller

ass'y

L

{A70-0367-05)}

AM

toop

antenna

(T90-0173-05)

ED

Antenna

adaptor

(T90-01

36-05)

&S

STs

Protection

bag

(H25-0631-04)

Antenna

holder

(J19-2815-04)

AC

plug

adaptor

{E03-01

15-05}

PACKING

inner

package

(HO9-0105-04)

Polystyrene

foamed

fixture

(H10-5023-12)

instruction

manuat

{B60-)

Protection

bag

(H25-0397-04)

Polystyrene

foamed

fixture

({H10-5024-12)

Item

carton

case

HO1-8845-04

(A-771)

HO1-8846-04

(A-711L)

A-71V1/711L

System

connections

Make

connection

as

shown

below.

When

connecting

the

components,

refer

also

to

the

instruction

manuals

of

the

ralated

components.

When

connecting

the

parallel

cord,

be

sure

to

match

the

colors

of

the.

sockets.

Do.

not

plug

in

the

power

lead

until

all

connections

are

completed.

{For

U.S.A.,

Canada

and

Austraiia)

Graphic

equalizer

To

wall

AC

outlet

nil

Ca

a

@

a

in

(nn)

Receiver

-

5

|

Insert

the

power

plug

a

|

into

an

AC

outlet

only

{

:.

after

the

connections

of

|

1)

@

‘the

speakers

and

anten-

Nese

|

na

have

completed.

|

CD

player

iSice

panel)

AC

voltage

selector

lexcept

for

some

areas}

Cassette

deck

Paralte:

cords

@

Connection

of

parallel

cord

©

Hold

the

connector

of

the

parallel

cord

in

parallel

with

the

socket

on

the

rear

panel,

and

insert

securely

until

it

clicks.

@

Connect

the

parallal

cord

by

matching

the

colors

of

the

connec-

tor

and

socket.

@

When

unplugging

the

parallel

cord,

push

and

hold

the

two

ends

of

the

connector

and

pull

the

connector

straight

from

the

rear

panel

socket.

Notes:

1

Connect

ail

cords

firmly:

If

connections

are

loose

there

could

be

loss

of

sound

or

noise

produced.

2.

When

plugging

and

unplugging

connecnon

cords

without

removal

of

the

power

cord

can

cause

maifunctions

or

damage

to

the

unit.

Controls

and

indicators

A-711/711L

@

Receiver

Timer

program

numbers

(PROG.)

SLEEP

timer

indicator

Day-of-the-week

indicators

band

indicators

Station

name

display/

Timer

time

display/Calendar

disptay

..

Receiving

frequency

Al

TIMER

indicators

MEMORY

indicator

—

a

CE

nae

f

0

Li

jxrz

tf

AUTO

STEREO

|

TUNED

Tuning

mode

indicator

TUNED

indicator

{AUTO}

Reception

mode

i

indicator

(STEREO)

Preset

channel

display

display/Clock

display

Display

Al

TIMER

1

key

Input

select

keys/

Al

TIMER

2

key

indicators

Cokeed

he

8S

8

See!

Ben

SUPER

WOOFER

key/indicator

:

VOLUME

CONTROL

SURROUND

key/indicator}

—_knob/indicator

BALANCE

control

knob

2YON™

STue

Swen

=

Hy

[con

Sas

SS

MA

|

2SA__aeveav

_gweexs

wife:

POWER

key

Numeric

keys/

Preset

channel

keys/Timer

Remote

control

day-of-the-week

keys

light

sensor

©

Execute

key

(EXE.)

©

PROGRAM

key

©

ENTER

key

©

CHECK

key

@

CLEAR

key

®

SLEEP

key

{P.SCAN)

ADJUST

key

HAO

DISPLAY

rine

Cusmactes

BE.ySt_OIRECT

AUTO

pair

cuagacre®

Paces,

Natural

bass

circuit

control

5

knob

(N.B.

CIRCUIT)

PHONES

jack

BAND

key

DISPLAY

key

up/down

keys

([<:

Preset

scan

key

|

TUNING/CHARACTER

PSCAN

—aaho

OPLAY

TUNING

CHARACTER

:

es

OE

2s

“|

oust

omEcY

auto

owait

cHanacter

~—-CHARACTER

key

DIGIT

key

DIRECT

key

AUTO

key

A-711/711L

Operation

of

remote

control

unit

Cassette

deck

B

operation

keys

Numeric

keys

for

CD

player/TUNER

operations

Graphic

equalizer

operation

keys

INPUT

select

keys

SURROUND

key,

@

Loading

batteries

Sie

eee

ae

1

Remove

the

cover.:

‘TUNER

operation

keys

Cassette

deck

A

operation

keys

CD

player

operation

keys

MUTE

key

SUPER

WOOFER

key

Insert

two

AA-size

(R6/

MASTER

VOLUME

SUM-3)}

batteries

as

indicated

up/down

keys

by

the

polarity

marking.

i=)

@

ea

Gian

CHG

EDT

IMLAY

MODE

Fired

lend.

Soe

C3}

[od

{men

KENWOOD

RC-745

N.B.

CIRCUIT

up/down

keys

Model:

RC-711

infrared

system

“@

Operation

procedure

Plug

the

power

cord

of

the

system

into

an

AC

wet

outlet,

oO

Remote

conttal

light

sensor

and

press

the

POWER

key

on

the

remote

control

unit

to

turn

on

the

main

system

the

power

on,

(amplifier)

When

the

power

is

turned

on,

press

the

key

of

the

source

component

to

be

operated.

Remote

control

unit

@

When

two

operation

keys

on

the

remote

control

unit

are

pressed

successively,

press

each

key

securely

reserving

an

interval

of

more

Operating

range

than

1

second

for

each

press.

Notes:

1.

2.

3.

The

supplied

batteries

are

intended

for

use

in

operation

checks.

Therefore,

their

lives

may

be

shorter

than

ordinary

batteries.

When

the

remote-controilable

distance

gets

shorter

than

before,

replace

both

batteries

with

new

ones.

Malfunction

may

occur

if

direct

sunlight

or

the

light

of

a

high-frequency

lighting

fluorescent

lamp

enters

the

remote

control

light

sensor.

In

such

a

case,

change

the

system

installation

position

to

prevent

the

maifunction.

DISASSEMBLY

FOR

REPAIR

How

to

remove

the

chassis

of

bottom

board

1.

Detach

the

radiator

cover

by

removing

the

three

screws

(@)

from

the

cover

of

rear

side.

{It

is

used

for

check

and

so

on

of

power

transistor)

2.

Remove

seven

screws

(@)

of

chassis

of

added

bottom

board.

:

3.

Remove

four

screws

(@)

of

the

transformer.

4.

Remove

the

chassis

of

bottom

board

from

the

right

side

of

-

front

panel

by

paying

attention

not

to

hook

it

with

surround

terminals.

(@)

A-711/711L

Function

of

components

Tuner

unit

(X05-3992-71)

Components.

A-711/711L

CIRCUIT

DESCRIPTION

Use/Function

Operation/Condition

LA1265

FM/AM

system

IC

FM

iF

amplification,

FM

detection,

AM

MIX,

AM

IF

amplification

and

AM

detection.

i

AN7470

Audio

demodulation

(AM,

FM}

FM

stereo

multiplex

M7001

PLL

IC

PLL

CXP50112-1270

Tuner

microprocessor

Tuner

control,

timer

operation

and

control

of

others.

|

uPD7538ACU-232

Amplifier

microprocessor

Amplifier

control.

PST529D

Reset

IC

Generates

the

reset

power

source.

BPC7805HF

or

AN7805F

+5V

3-terminal

regulator

+5V

rectification

#PC7805HF

or

AN7805F

+5V

3-terminal

regulator

+5V

rectification

2SC1923{R.0)

IF

amplification

IF

amplification

of

FM

2SK163(L,M)

+

PLL

time

constant

conversion

Sw

At

the

time

of

LW

reception:

OFF

2S8C945{(ANQ,P)

or.

2SC1740S(Q,R)

L.P.F.

for

PLL

(integration

type)

2SC1845(F,E}

Torr.

r

L.P.F.

for

PLL

(integration

type)

2SC945{AHQ,P)

or

28C1740S(Q,R)

2SC945(ANQ,P)

or

28C1740S(Q,R)

2SC945{ANQ,P)

or

2SC1740S(Q,R)

2SA733(ANQ,P)

or.

2SA933S(Q,R)

2SA733(ANQ,P)

or

2SA933S(0,R)

2SA733(A}(Q,P)

or

2SA933S(Q,R)

2SC945(A)(Q,P)

or

2SC1740S(Q,R)

MWILW

conversion

MW/LW

conversion

Buffer

FM

+

B

conversion

LW

+

B

conversion

MW

+

8

conversion

Deemphasis

conversion

2SC9451(A)(Q,P)

or

2SC1740S(Q,R)

L

Deemphasis

conversion

~~

At

the

time

of

MW:

ON

At

the

time

of

LW:

ON

Buffer

for

FM

detecting

output

(for

L.P.F

matching}

At

the

time

of

receiving

FM:

ON

At

the

time

of

receiving

LW:

ON

At

the

time

of

receiving

MW:

ON

50

psec.

«+

75

psec.

At

the

time

of

Tr.

ON:

75

ysec.f

~

mE

2SC945(A}(Q,P)

or

2SA1740S(Q,R)

Reversing

circuit

Controls

reset

circuit

(Tuner

p-COM)

2SA733(A}(0,P)

or

2SA933S(Q,R)

Reversing

circuit

Controls

reset

circuit

{Amplifier

p-COM)

2SA733(ANQ,P)

or

2SA933S(Q,R)

Reversing

circuit

Reverses

the

mute

signal

from

the

amplifier

microprocessor.

2SA733(AN(Q,P)

or

2SA933S(Q,R}

Reversing

circuit

Reverses

the

mute

signal

from

the

tuner

microprocessor.

2SA733(A}(Q,P)

or

2SA933S(Q,R)

Destination

Conversion

SW

Converts

deemphasis

and

channel

space.

2801302iS,T)

Mute

SW

of

Lch.

28D1302(S,T)

Mute

ah

Mute

SW

of

Rch.

|

28012800.

2SC945(A}(G,P)

or

2$C1740S(Q,R}

7

2SC945(AMQ,P)

or

2SC1740S(O,R}

+

14V

rectification

Generates

the

stabilized

power

source

for

14V.

11

A-711/711L

12

Function

of

components

Audio

unit

(X09-3142-71)

Components

CIRCUIT

DESCRIPTION

Use/Function

NJM2058D.

Surround

t

Operation/Condition

Surround

buffer

NJM2058D

Headphone

amplifier,

Super

woof-

er

buffer,

VR

detecting

comparator

TC9215P

L.------—~

Surround

selector

IC2

(1/4)

(2/4)

headphone

amplifier,

C2

(3/4)

super-woofer

buffer,

1C2

(4/4)

comparator

Surround

is

turned

ON/OFF

with

the

No.

23

of

C6

<x05>.

H:.ON,

L:

OFF

Mute

MUTE

is

turned

ON/OFF

with

the

pin.No.

13

of

IC6

<X05>.

H:

ON,

L:

OFF

e

BPC1237HA

Protection

TA8409S

Main

volume

drive

MAIN

VOL.

is

turned

DOWN/UP

with

the

Nos.

6

and

7

of

IC6

<X05>.

TA8409S

N.B.C.

volume

drive

N.B.C.

VOL

is

turned

DOWN/UP

with

the

Nos.

10

and

11

of

C6

<X05>.

2#PC7915HF

~.15V

stabilizing

power

source

-terminal

re

|_S-te

‘minal

regulator

2SA992(F,E}

=

For

the

tst

stage

A

class

+

2SA992(F,E)

Q13,14

015,16

Q17,18

Q51

Q52

063

086

2SC1845(F,E)

2S022558T

*5

2SB1493BT

#5

28C2631(R,S)

For

the

2nd

stage

A

class

For

the

2nd

stage

A

class

Final

Tr.

Finat

Tr.

For

detecting

overloading

2SC4137F1S(V,W)

For

temperature

compensation

28C2878(B)

2SA733(ANQ,P)

or

2SA933S(0,R)

2SA733(A}(O,P}

or

2SA933S(0,R)

28A992(F,E)

28C3666

For

super

woofer

muting

Super

woofer

muting

drive

Ripple

filter

For

protection

AC

relay

drive

Q56

28C1740S(Q,R)

or

2SC945(A}(Q,P}

it

is

turned

ON

by

turning

on

Q52.

It

is

turned

ON

by

lowering

No.

9

of

IC6

(x05).

It

drive

AC

relay

Ki,

2

with

the

No.14

of

IC6

(X05).

Speaker

relay

drive

It.drives

the

SP

relay

K3

with

the

No.16

of

IC6

(X05).

057

25D1266(Q,P)

+-15YV-

stabilizing,

power

source

iz

01,2

HSS104

or

18$133

For

A

class

03,4

HSS104A

or

188131

Far

protection

D1

RBV-602LFA

For

rectification

D1i2

HZS15S{B)

or

RD15JS(B)

+

15V.

stabilizing,

power

source

+

D3

HZS15S(B)

or

RD15J5S(B}

For

+

15V

stabilizing

power

source

A

class

D14,15

HZS5.1N(B2)

or

RDS.

1ES(B2}

For

VR

detection

D116

HZS4,7N(B)

or

RD4.7ES(B)

For

muting

D17~

22,

34,35

HSS$104

or

1SS133

For

protection

of

static

electricity

B23

HS$104

or

188133

For

removing

headphone

shock

noise

024

HS$104

or

188133

For

removing

selector

shock

noise

D26,26

HSS$104

or

188133

For

relay

.

D27

HSS104A

or

18S131

For

relay

D28

HSS104A

or

18$131

For

detecting

protection

AC

029

S5566B

For

rectifying

AC

relay

power

source

D32

HS$104

or

18$133

4

For

mute

D33

HS$104

or

185133

For

VR

LED

D34

or35

HSS104

or

1$$133

For

protection

of

static

electricity

Wivenbemenericinameaie

nner

nen

neem

nn

(IAL

<

XOB>

©

GET

KX

XT

KZ

microproc-

~~

ad

Reference

number

CXP50112

=-127

+232

uPD7358ACU

CIRCUIT

DESCRIPTION

Microprocessor

and

back-up

condenser

of

this

unit

:

15pin

connection

cable

(BUSY,

(DATA)

M50955

—239SP

M50941

#PD75112CW

~O71

—351SP

Initialization

(reset)

of

each

microprocessor

and

test

mode

A-711/711L

PDP*71

1KX32>—4

»PD75212ACW

+207

Condenser

C90

0.047F

5.5V

C136

0.047F

5V

A-771/719L

GE-711

X-711

DP-711

TUNER

AMP.

GE

DECK

;

cD

microprocessor

1C5

(X05)

ICG

(X05)

1C18,

19

(X11)

1C1

(X28)

1C4

(X32)

t

Back-up

(X05)

None

(X11)

{X28}

None

C322

0.047F

6.3V

Initialization

{Reset}

insert

the

AC

plug

to

the

outlet

while

press-

ing

the

“ENTER”

key.

Pull

out

the

AC

plug

from

the

outlet

and

then

insert

again.

Turn

on

AC

while

pressing

the

ENTER”

and

‘‘MEMO”’

keys

of

GE.

be

-

15

dB).

Keep

pressing

the

“CRLS"'

key

for

more

than

three

seconds

per

selector

{turns

out

to

Turn

AC

off

once.

Operation

|

While

simultaneously

pressing

the

selector

’'CD”’

and

tuning

“DOWN”

keys,

insert

AC

plug

into

the

outlet

and

simultaneously

touch

off

the

keys.

(1)

Turn

on

AC

while

pressing

the

“ELAT"

key.

(2)

There

is

also

the

selector

test

mode.

For

details,

X-711,

Release

Test

mode

“UP/DOWN”

keys.

Press

either

one

of

ten

keys,

“BAND

or

Turn

AC

on

and:

off

without

pressing

any

key.

service

manuat

There

is

the

adjustment

test

mode.

For

details,

see the

service

manual

of

DP-711.

see the

of

Contents

(4)

Turns

on

ail

the

FL

tubes.

For

details,

see

the

service

manuals

of

various

equipment.

No

FL

tube.

13

A-711/701L

CIRCUIT

DESCRIPTION

Operation

of

UD-7

system

The

flow

chart

from

power

on

through

sound

generation

START

TU

:

TUNER

microprocessor

DE

:

DECK

microprocessor

GE

:

GE

microprocessor

There

is

POWER

ON

time.

POWER

ON

YES

System

ON

code

output.

<<

timer

PLAY

€

POWER

ON

all

the

units

GE

TIMER

REC

YES

setting

Last

condition

selector

(When

a

tape

is

used

deck

B

is

prioritized.)

POWER

ON

pe

Tape

is

recordable

System

ON

code

output.

~~

4

Selector

is

TUNER

POWER

ON

all

|

the

units

YES

GE

r

Processing

of

B

DECK

is in

te

TIMER

PLAY

Al

TIMER

1

|

recording

state

14

A-711/711L

CIRCUIT

DESCRIPTION

@

Flow

chart

of Al

TIMER

2

<TUNER>

<cD>

<GE>

Executes

Al

TIMER

2

SET

{ON}

Replays

the Ist

and

2nd

musics

on

DISC

TRACK

POWER

ON

ail

this

units

CO

the

selector

Tuner

the

selector

STOP

at

the

end

of

the

2nd

music

on

DISC

TRACK

Execute

by

switching

to

the

broadcasting

sta-

tion

program

POWER

OFF

at

the

Timer

off

time

Operation

of

Al

TIMER

2

co

GE-711

_———

Saar

aad

A-71V/711L

GE

AMP:

TUNER

7

microprocessor

£xXi>

1C18

<X0571C6

&x0S?

1C5

SYNCHRO

“~

DATA

SYNCHRO

DATA

COMPARATOR

DATA

(4bit)

14

A

\«2se

<X09>

13

When

the

comparator

output

(pin.

14)

volume

is

5V,

volume

up

is

not

executed

(When

volume

is

set

at

abs

25V

FIX

deh

is

set

at

about

wor]

Volume

position

regulating

circuit.

VRH3/3).<

X09>

SOK(B)

GE

data

selector

Volume

position

check

for

the

cor-

rection

of

loudness

curve.

{With

the

Al

TIMER

1,

this

is

off.)

15

A-711/711L

CIRCUIT

DESCRIPTION

@

Indication

flow

of

Al

TIMER

1

<AMP

;

MAIN

VOL.

>

<TUNER>

Executes

Al

TIMER

1

SET

(ON)

POWER

ON

all

the

units

Set the

selector

to

the

indicated

po-

sition.

Decreases

VOL.

for

16

seconds.

Indicates

VOL,

UP

-

Increases

VOL.

by

after

16

seconds

one

step

.

Increases

VOL.

one

more

step

Indicates

VOt.

UP

after

30

seconds

{Note

3}

Indicates

VOL.

UP

Increases

VOL.

one

after

30

seconds

more

step

{Note

5)

POWER

OFF

at

the

timer

off

time

Note

1:

Note

2:

Note

3:

Note

4:

Note

5:

16

<G.E>

Turn

off

the

Al

loudness

Is

Al

loudness

turned

OFF?

Turn

to

the

GE.

pat-

tern

immediately

before

POWER

OFF

(Note

1)

-

Bass

corrects

gradual

decrease

(Note

2)

Changes

the

gradu-

al

decrease

bass

correction

{Note

4}

Returns

to

the

ini-

tial

GE

pattern.

Each

selector

has

its

own

GE

pattern

(Either

pattern

of

memory

and

last

pattern).

Therefore,

the

GE

pattern

of

the

source

indicated

by

the

timer

appears.

5

Shifts

to

the

pattern

which

has

the

loudness

effect

(There

are

two

patterns

of

the

gradual

decrease

bass

correction

of

Al

TIMER

1).

The

three

steps

of

increase

volume

can

be

selected.

Decrease

correction

volume

is

lowered

in

accordance

with

VR

UP.

Same

as

Note

3.

However,

the

VR

position

is

limited

at

the

posi-

tion

of

12.

e

A-711/711L

CIRCUIT

DESCRIPTION

Function

description

a)

Al

TIMER

1

®

With

the

program

timer

mode

set

to

PLAY,

when

the

timer

is

turned

ON,

the

setting

contents

for

the

Al

TIMER

1

is

ac-

tivated

if

the

Al

TIMER

1

is

set

to

ON

(the

FL

indicator

is

lit).

®

When

the

Al

TIMER

1

is

turned

ON,

first

playback

starts

with

the

minimum

volume

level,

then

the

volume

level

is

increased

in

three.

steps.

©

The

third-step

volume

level

{the

maximum

volume

level)

can

be

selected

among

the

three

types

of

the

volume

levels

(VOL.

1-3).

Each

time

the

Al

TIMER

1

key

is

pressed,

the

maximum

volume

level

is

changed

in

order

from

VOL.

1

to

VOL.

3

and

TIMER

OFF

setting

cyclically.

@

When

the

key

is

pressed

with

the

Al

TIMER

1

is

OFF

(FL

indicator

is

not

lit):

c

OFF

-+

VOL.

1

+

VOL.

2

-»

VOL:

3

J

@

When

the

key

is

pressed

in

the

volume

set-

ting

mode

(FL

indicator

is

lit):

Example:

When

VOL.

2

is

selected

cr

VOL.

2

+

VOL.

3

>

OFF

>

VOL.

1

A

Reference

for

volume

selection

VOL3

vot2

Maximum

volume

VOL1

VOLUME

control

position

0'16”

0°30"

100°

1°30"

®

The

VOLUME

contro!

rotates

as

the

volume

changes.

©@

The

graphic

equalizer

curve

also

varies

accordingly.

b)

Al

TIMER

2

®

With

the

program

timer

mode

set

to

PLAY,

when

the

timer

is

turned

ON,

the

setting

contents

for

the

Al

TIMER

2

is

ac-

tivated

if

the

Al

TIMER

2

is

set

to

ON

(FL

indicator

is

fit).

@

When

the

Al

TIMER

2

is

turned

ON,

if

the

disc

is

loaded

in

the

CD

player,

the

two

tracks

on

the

disc

is

played

regard-

less

whether

the

other

source

is

set

for

play.

Then,

the

playback

source

is

changed

to

tuner

automat-

ically.

@

Each

time

the

Al

TIMER

2

key

is

pressed,

the

timer

setting

is

changed

alternately.

Timer

program

operation

<When

the

program

settings

are

registered

within

the

same

period

>

:

®

When

the

two

or

more

program

settings

are

to

be

started

at

the

same

time:

The

program

having

the

least

number

is

activated

and

others

will

be

cancelled.

@

When

the

setting

time

for

two

or

more

programs

differ:

First,

the

program

with

the

earliest

setting

time

is

activat-

ed.

Then,

if

the

same

mode

(REC

mode

or

PLAY

mode)

has

been

designated

for

the

other

program,

the

operation

is

changed

to.

the

program

in

which

the

same

mode

as

the

first

one

is

designated

and

the

end

time

for

the

above

pro-

gram

will

be

cancelled.

If

another

mode

is

set

for

of

other

programs,

the

contents

will

be

cancelled.

Example

1:

When

the

operation

modes

for

all

three

programs

are

set

to

PLAY:

Program

@

Start

Cancel

Example

2:

When

the

operation

modes

for

pro-

grams

@),

@

are

set

to

PLAY

and

that

for

the

program

@

is

set

to

REC:

Program

|

Cancel

7

<

“

a

<0)

stort

Cancel

2

®

/

aaa

End

Example

3:

When

the

operation

mode

for

pro-

grams

©,

@

are

set

to

REC

and

that

for

program

@)

is

set

to

PLAY:

Program

OC

a

End

Start

Cancel

aS

®

Cancel

®

The

program

end

is

determined

by

the

OFF

time

of

the

program

which

is

activated

at

the

lest.

V7

A-711/711L

CIRCUIT

DESCRIPTION

N.B.

CIRCUIT

(X09-3142-71

(B/5))

:

The

N.B.

of

N.B.

CIRCUIT

stands

for

Natural

Bass,

and

it

is

the

circuit

to

create

further

natural

bass

sound.

It

is

roughly

composed

of

()

Variable

loudness

control

and

@

Main

amplifier

bass

emphasizing

circuit

showed

in

the

chart.

The

@

Variable

loudness

control

in

the

chart

has

become

able

to

vary

the

level

of

loudness

control

by

mounting

the

tradition-

al

loudness

control

variable

VR

(VR2,1/4)

onto

itself.

The

@

main

amplifier

bass

emphasizing

circuit

can

boost

up

the

desired

frequency

with

the

fixed

number

of

C.R.

parts

for

input

and

returning

C.R.

parts

of

main

amplifier.

It

has

also

be-

come

able

to

vary

these

boost

levels

by

mounting

VR2,(3/4)

onto

it.

The

fixed

number

of

this

A-711/711L

has

been

set

so

as

to

boost

up

60

Hz.

IC5:

CXP50112-1270

(X05-3992-71)

TUNER

microprocessor

Terminal

connection

diagram

&

key

matrix

connection

KEY

MATRIX

i}

fed

fee

fT

PRO-

KR3

ee

awe

6

O—

O

ae

ww

er

DIODE

64

—of>po—

1C5(X05)

8-BT-98GK

FL1(X08)

BACK

UP

GAPASITOR

5.6V

18

CXP50112-127Q

The

action

of

this

circuit

results

from

the

combination

of

afore-

mentioned

@)

and

@),

which

also

can

vary

the

boost

level

of

bass

sound

at

the

same

time.

MASTER

VOL.

MAIN

AMP.

INPUT

OUTPUT

Zz

¢VR2-(3/4}

Af

VR2-(1/4)

~

lL.

—

BASS

CONT.

VOL.

@

Variable

loud-

ness

control

@

Main

amplifier

bass

emphasizing

circuit

DATA(SYSTEM

CONTROL)

BUSY

(SYSTEM

CONTROL)

il

STEREO

«|

apere

}

from

XO5

MONO

TO

X05

1C3

LM7001(X05)

|

L__

cE

DATA

PLL

IC

CLK

TMUTE

A-711/711L

CIRCUIT

DESCRIPTION

connections

Vop

EXTAL

|.

x3:

4.193504MH2

c

xTAL

—]

—

noo

+t

OMAN

B38

&

§&

cee

fe

Yx~

YX

Y~yxyv

YY

mon

=

2

°

PEGG

:

YN

-—

ODN

aara

FEKO

»

686

5006

onnn

>

Zz

>

2

8.

&

oo

PD1

KR1

PDO

KRO

PY3/RMC

=REMOCON

PY2/WP

CE

PY1/PWM

NG

KS4

S4/PGO

(S17,

19)

Al

$5/PG1

(S17,

18)

Ai2

S6/PG2

NC(OPEN)

S7/PG3

Si6

$8/PKO

S15.

S9/PK1

PYO

NC

$14

S10/PK2

PE3

NC

si3

S11/PK3

PE2

NC

S12.

$12/PJO

PEt

NC

S811

§13/PJ1

9

PEO

NC

S10

$14/PJ2

oy

PF3

NC

S9

-$15/PJ3

ws

PF2

NC

S8

$16/T15

2

PF1

NC

S7

$17/T14

=

PFO

NC

S6-$18/T13

=

PA3

NC

$5

$19/T12

PA2

NC

S4

$20/T11

PAI

DATA

$3.

$21/T10

PAO

BUSY

52

$22/T9

PX2/SI

BILINGUAL

S1

$23/T8

Px1/SO

STEREO

($20)

1G

17

Px0/SC

SD

2G

T6

EC

GND

3G

TS

PB3/AD7

NC

4G

T4

PB2/AD6

PMONO

4tHoAArA

Fa

aAaDZ2c<

DIBA

won

=

0

x

manag

G28

GB

BD

4

o

6

6O

Nm

Ww

x

a

SS

ee

Or

PbRPbPP

SDS

828888

ok

Go

9

Oo

rvroOO

ZOBD<

<

aA

Ve

vw

a8

a88e

sar

zgeeterza

on

OWN

cloo

©

f¢

C

fo)

m

ajA

A

AS

D

U 4

m

Zz

m

z

19

A-711/711L

20

functions

name

CIRCUIT

DESCRIPTION

Description

name

CIRCUIT

DESCRIPTION

A-/11/711L

Description

S4/PGO

Key

scan

output

S5iPG1

{

Al

ON/OFF

FL

segment

output

($17,719)

PX2iSI

Bilingual

signal

input

H:

NORMAL

&:

BIUNGUAL

PAO

l

System

contro!

busy

S6/PG2

Ai2

ON/OFF

FL

segment

output

{S17,18)

PAI

System

controi

data

S7/PG3

°

S8/PKO

FL

segment

output

$16

S9/PK1

FL

segment

output

$15

S10/PK2

@l

ni

Mlarjyppolynmji-

FL

segment

output

$14

1

YS11iPK3

|

FL

segment

output

$13

$12/Ps0

FL

segment

output

$12

1

s13/Ps1

FL

segment

output

$11

|

$14iPJ2

FL

segment

output

$10

S1S/PS3

FL

segment

output

$9

Si6/T15

FL

segment

output

$38

SATITAGW.

FL

segment

output

$7

$18/T13

FL

segment

output

S6

PY1/PWM

OFOJOlOJO!O/Oj;Ololalso

S19/T12

FL

segment

output

$5

$2071

'$21/T10

$23/T8

8

19

$22/IT9

20

FL

segment

output

$4

FL

segment

output

$3

FL

segment

output

FL

segment

output

FL

grid

output

1G{$20)

FL

grid

output

FL

grid

output

FL

grid

output

FL

grid

output

FL

grid

output

FL

grid

output

FL

grid

output

{

External

interrupt

...

unused

TX

ol~lololololololololojolojofojojojojolojojojojojolo

Timer

oscillation

.

..

unused

PY2/wP

PY3/RMC

AC

ON/OFF

detection

input

Remote

control

input

Key

return

input

Key

return

input

Key

return

input

Key

return

input

Key

return

input

Key

return

input

Key

return

input

For

oscillator

:

With

input

L:

Without

input

H:

With

input

L:

Without

input.

H:

With

input

L:

Without

input

H:

With

input

L:

Without

input

H:

With

input

1:

Without

input

H:

With

input

Ls

Without

input

H:

With

input

Ls

Without

input

For

oscillator

TEX

Timer

oscillation

...

unused

RST

Reset

input

NC

Vbo

Power

supply

PIO/ADO

Mute

output

:

MUTE

OFF

:

MUTE

ON

PIT/AD1

4

Clock

to

PLL

or

extension

Ic

PIZ/AD2

Data

output

to

PLL

or

extension

IC

PI3/AD3

i

Chip

enable output

for

PLL

TV

sound

MPX

selection

output

i

PBO:AD4S

PBI/ADS

(Caray

TV

sound

MPX

selection

output

PB2i/AD6

Stereo/monaural

selection

PB3/AD7

OjojOlololo]o;o

ize

Event

counter

input

....

un

used

PXO/SC

Tuning

signai

input

PXU/SO

+

Stereo

signal

input

For

voltage

detection

reset...

unused

SO/PHO

FL

terminai

pull-down

resistor

power

supply

Key

scan

output

:

S1/PH1

|

Key

scan

output

S2/PH2

Key

scan

output

S3/PH3

Key

scan

output

US

a

ed

21

A-711/711L

CIRCUIT

DESCRIPTION

Test

mode

{1)Setting

method

Insert

the

AC

plug

into

an

outlet

and

remove

your

fingers

from

DOWN

key

at

the

same

time

while

pressing

DOWN

key.

(2)Contents

—

POWER

ON

All

the

FLs

turned

on

Test

Frequency

Setting

(Table

1)

(3)Clearing

method

All

the

turned

on

FLs

can

be

cleared

with

ten

keys,

BAND

key,

UP/DOWN

key

or

POWER

key.

Setting

of

initial

conditions

(reset)

(1}Method

While

pressing

ENTER

key,

turn

the

AC

ON.

(2)Contents

Clears

all

the

memory

and

returns

to

the

initial

conditions.

However,

the

test

frequency

is

newly

memorized

in

the

preset

memory

at

this

time.

(The

same

as

when

the

back-

up

data

is

NG.)

Conditions

by

destination

Desti-

Destination

switches

nation

;

]

type

©

83

i

B2

BI

Destination

K,P,Y,M.X

TE

76.0

MHz

87.5

MHz

87.5

MHz

78.0

MHz

89.1

MHz

89.1

MHz

i

80.0

MHz-

90.0

MHz

90.0

MHz

82.0

MHz

92.0

MHz

92.0

MHz

83.0

MHz

94.0

MHz

94.0

MHz

83.5

MHz

+

98.0

MHz

98.0

MHz

86.0

MHz

100.1

MHz

100.1

MHz

ao

88.0

MHz

102.0

win

|

102.0

MHz

ODEN

ODI

A!

SB

wl Ni

—

89.1

MHz

106.0

MHz

4.

106.0

MHz

=

oOo

90.0

MHz

108.0

MHz

108.0

MHz

531

kHz

530

kHz

531

kHz

630

kHz

630

kHz

630

kHz

990

kHz

1440

kHz

4440

kHz

1602

kHz

4610

kHz

990

kHz

990

kHz

1440

kHz

3602

kHz

HIP

;WIEN

LOH

ITHM

i

ani

Slwinyn]—

_

(1700

kHz}

153

kHz

162

kHz

216

kHz

270

kHz

281

kHz

#[sfo

ie

Receiving

frequency

range

(Table

1)

Inter-channel

space

frequency

T

Intermediate

:PLL

reference

frequency

76.0~90.0

MHz

100

kHz

-

10.75

MHz

|

L

|

26

kHz

531~-1602

kHz

9

kHz

+450

kHz

9

kHz

1~62ch

6

MHz

~

10.75

MHz

25

kHz

87.5~

108.0

MHz

100

kHz

150

kHz

+

10.7

MHz

50

kHz

(25

kHz}

531~

1602

kHz

1530

~

1610

kHz

9

kHz

10

kHz

+450

kHz

10

kHz

87.5~

108.0

MHz

100

kHz

+

10.7

MHz

+

50

kHz

(25kHz}

530

~

1610

kHz

10

kHz

+450

kHz

10

kHz

87.5

~

108.0

MHz

50

kHz

+

10.7

MHz

50

kHz

{25kHz}

531

~

1602

kHz

9

kHz

+450

kHz

9

kHz

87.5

~

108.0

MHz

50

kHz

+10.7

MHz

50

kHz

(25kHz)

531

~

1602

kHz

9

kHz

+

450

kHz

—-

9

kHz

153

~

281

kHz

4

kHz

+450

kHz

1

kHz

A-711/711L

CIRCUIT

DESCRIPTION

IC6:

»PD7538ACU-232

(X05-3992-71)

AMP.

microprocessor

Terminal

connection

diagram

&

key

matrix

connection

KEY

MATRIX

KRO

eB

SUPER

WOOFER

1c6

RESET

Q14

(1)

RESET

Veg

G2)

POWER

|

(2)

CLI

KROG@))<—

40

is

(3)

CL2

TAPE

boo

600

kHz

(4)

KR2

ae

a

d

(5)

VLoap

KR3

($8)

aN

7

D60

Main.

volume

6)

SO

S

soe

kthes

KS

1

G6

(VR1)LED

(g)LED

Nc

G5)

S.WOOFER

MUTE

(Q)\SWOOFERMUTE

N.C

@)

N.B.C

bass

control

-

(9)

-B.

N.C

G3)

mosses"

|

con

VAS

(xo9)

(2)n.c

n.c

BY

(is)

NC

cD

@)

SPEAKER

relay:

K3

(ie)

SP

ON/OFF

Comparator:

IC2

ae:

(4/4)

igang

el

in

|

OAT/LDGS

Microprossesors

of

(sg)

DATA

N.C

4)

N

:

Ecce

ane:

SURROUND

@3)

Sy

&

‘Vv

te

@!)

Vop

SWOOFER

2)

ae

ps2

[psi

[oso

RY

Y

055

[p54

23

A-711/711L

CIRCUIT

DESCRIPTION

functions

No.

a

name

10

Symbol

Description

1

RESET

]

RESET

<

Reset

input

{H:

Reset)

2

CLI

i

ek

ere

ee

System

clock

terminal

3

i

CL2

.

aise

|

System

clock

terminal

4

VPRE

_

-

No

use.

(GND)

5

|

Vos

= -

No

use.

(GND)

6

P53

ie)

VOL,

DOWN

Motor

volume

down

drive

7

|

P§2

ie)

VOL.

UP

Motor

voiume

up

drive

8

4

i

P51

ie)

VOL.

LED

Volume

indicator

LED

drive

9g

+

PBO

fe)

S.WOOFER

|

Super

woofer

mute

Hae

10

+

P23

|

0

BASS

UP

N.B.

circuit

volume

up

drive

VW

:

P22

10)

BASS

DOWN

N.B.

circuit

volume

down

drive

12.

|

P2?

TOUT

ai

No

use.

(OPEN)

13

1

P103

fc)

MUTE

Mute

es

14

|

P102—

_

0

|

POWER

Power

relay

drive

15

}

pio:

She

No-use.

(GND)

16

|

pice

fe)

SP

ON/OFF

Speaker

ON/OFF

conversion

HON

17

|

Ptt3

fi

|

vouuir

in

Volume

position

detection

input

1B

|

PI2

|_|

REMOCON

IN

Remote

contro!

input

19

Pit?

110

DATA

Serial

data

input/output

20

}

P11d

vO

BUSY

Serial

busy

input/output

21

Voo

- _

Power

supply

22

P93

ie)

S.WOOFER

Super

woofer

LED

drive

23

P92

0

SURROUND

Surround

ON/OFF

and

LED

drive

toh.

24

Pg}

—

-

No

use.

(OPEN)

25

P90

fe)

TAPE

LED

drive

27

|

a2

0

28

|

P8i

?

6)

cb

CD

LED

drive

29

|

P8c

4

- -

|

No

use.

(OPEN)

30

|

Pas

i

SP

OFF

Speaker

OFF

detection

input

Tun

St

OFF

het

31

|

P42

me

-

No

use.

(GND)

32.

«Pat

a

es

|

No

use.

(GND)

33.

—«|

PAO

[

-_|-

T

No

use.

(GND)

34

|

P33

-|-

No

use.

(OPEN)

35

|

P32

eens

Recs

[No

use.

(OPEN)

36

|

P34

Q

KS1

Key

scan

output

signal

1

37

|

P3C

L

Q

KSO

[

Key

scan

output

signal

0

33

t

POSS!

i

\

KR3

_|

Key

return

input

signal

3

39

|

poziso

\

KR2

Key

return

input

signal

2

40

|

POWSCK

1

|

KR

Key

return

input

signal

1

a4

F

POCHINTO

1

KRO

|

Key

return

input

signal

0

42

|

vss

i

GND

24

A-AWUAIL

CIRCUIT

DESCRIPTION

Timing

chart

(1)

POWER

KEY

ON

t

1

500ms

Ss

=!

MUTEW3

ar

elas

a

aaa

|

ee

KEY

ON

LED

data

output

(2)

SELECTOR,

SURROUND,

SUPER

WOOFER

KEY

ON

1

i

|

LED

data

output

t

1

KEY

ON

~ :

’

S-

WOOFER

=

Coe

oe

MUTE(9

)

(

}:

No.

of

IC6

(microprocessor)

.

*

When

the

switching

of

POWER

ON/OFF

or

selector

is

executed

in

the

con-

dition

of

SUPER

WOOFER

ON,

S.

WOOFER

MUTE

will

have

the

same

tim-

ing

as

MUTE

(The

logic

is

reverse}.

Test

mode

initial

status

a)

Setting

method

Item

Condition

While

pressing

the

‘‘CD'’

key

and

tuning

‘’DOWN”’

key,

insert

the

AC

plug

into

the

outlet

and

simultaneously

touch

off

the

key;

then

the

amplifier

and

tuner

simultaneously

enter

the

TEST

SURROUND

MODE.

When

you

wish

to

enter

only

the

amplifier

into

the

TEST

SUPER

WOOFER

MODE,

pull

out

the

AC

plug

from

the

outlet

in

the

POWER

ON

condition

and

insert

the

AC

plug

into

the

outlet

while

pressing

MUTE

the

“CD”

key.

b)

Clearing

method

\n

order

to

simultaneously

clear

the

amplifier

and'tuner,

press

either

the

ten

keys,

‘‘BAND’’

key

or

UP/DOWN"

key.

In

order

to

clear

the

amplifier,

press

either

'‘TUNER’'

key

or

pull

out

the

AC

from

the

outlet.

In

order

to

clear

the

tuner,

refer

to

the

tuner

microprocessor

(page.

22).

c)

Contents

of

operation

@

POWER

is

turned

ON

and

all

the

LEDs

are

lit

on.

@

By

pressing

'’S-WOOFER",

both

the

VOLUME

and

N.B.

CIR-

CUIT

are

simultaneously

up,

and

remain

to

be

UP

for

12

se-

conds.

Then,

they

go

DOWN

and

STOPS

after

about

12

seconds.

@

Even

if

the

“CD’",

‘TAPE’,

‘’DAT/LD’’,

“SURROUND”

and

““POWER"

keys

are

pressed,

they

are

not

accepted.

a

ae

OFF

(STAND

BY)

2

ON

MOTOR

VOLUME

CONTROL

OFF

LEO

OUT

LIGHTS

Initialization:

Pull

the

AC

plug

from

the

outlet

and

then

insert

again.

25

A-711/711L

CIRCUIT

DESCRIPTION

IC5,

6:

TA8409S

(X09-3142-71)

Volume

motor

drive

IC

Block

diagram

Vcc,

mo

Vg

Vref

Standby

circuit

See

Vret

@

No,

4:

no

use

Truth

table

OUTPUT

MODE

No.

of

1C5,

6

Motor

mode

«;

High

impedance

input

“’H”’

active

26

A-711/711L

ADJUSTMENT

Tuner

unit

If

alignment

point

is

"-",

Confira

the

value.

if

aot,

replace

the

frontend

pack

and

[C2(X05:PLL),

Pic

THPUT

OUTPUT

TUNER

ALIGRYENT

ITEM

SETTINGS

POINTS

ALIGN

FOR

PIG.

FM

SECTION

SELECTOR:

FM

Connect

a

BC

BAND FDGE

-

voltacler

between

87,

Sullz

-

1.67

(a)

@

TP1OCVT)

and

zea

°

Connect

a

DC

BAND EDGE

-

voltreter

between

108.

0MHz

-

8.07

(a)

(2)

TP1OCVT)

and

TPI3(GRDY

:

i

(a)

98.

Oxllz

Connect

3

DC

AUTO

Le

DISCRIMINATOR

}—Lkllz.

#75kiz

dev

volineter

between

or

KONO

(X65-)

Ov

(b)

80dBu(ANT

input)

TPM

and

TP12,

98,

OUllz

@

98.

Oitz

Connect

a

frequency}

AUTO

¥R2

¥co

0

dev

counter

between

98iliz

(X05-)

19.

0OkHz

(ec)

300dBuC(ANT

input)

|

TPS

and

GND.

i

>)

|

ive

98.

ON

5

DISTORTION.

}

Jkllz,468,25kH2

dev

:

WT

(STEREO)

|

Selector:t

or

&

{d)

98.

OMHz

«¥02-)

Minimum

distortion:

Pilot:46.

75kKz

dev

GOuBu(ANT

inpul)

©

SEPARATION

98.

OMliz

AUTO

(E,T

type

Stereo

signal

98.

OM

5+

Wininum

crosstalk,

onty)

60dBuCAKT

input)

(a)

TUNUEG

LEVEL

98.

OMliz

Adjust

¥RI

0 dev

3-'

and.

Stop

at

the

point

H4dBuCANT

input)

75%

5

where

FLICTUNED)

goes

on.

AM-MW

SECTION

Keep

the

AM

Joop

antenna

instatied.

SELECTOR:

AM

or

¥¥

fey

Connect

3

DC

(1)

|

BAND EDGE

=

voltmeler

between

530kHz

-

1,3¥

(a)

a)

TPLOCVT)

and

TPI3GGNO}

(S31

KHz)

Connect

a

DC

(2))

BAND

EDGE

-

voltmeter

between

163

0kHz

oe

70V

(a)

@

TPIOCVT)

and

TPI3CGHDY

(1602kH2)

)

(3)

geckiz

L2

Maximum

amplitude

and

RF

ALIGNMENT

|

400112,309%

sod

{d)

990kBz

BLACK

{|

symmetry

of

the

oscilloscope

24aBuCART

input)

.

(405-)

|

display.

AM-1.W

SECTION

CET

tyne

only)

Keep

the

AM

loop

antenna

installed.

SRLECTOR:

L¥

Connect

@

DC

(4)]

BAND EDGE

-

voltecter

betseon

153kHz

-

2.3V

(a)

@

TP1OCYT)

and

‘TP13CGRD})

|

Connect

a

DC

(5)

1

BAND

EDGE

ed

voltmeter

between

281

kz

-

7.0¥

(a)

@

TPIOCVT)

and

TPL3¢GHD:

|

Repeal

alignments

(4)

and

(5)

several

Lines,

«)

21

6kliz

L3

Waximum

amplitude

and

(6)}

RF

ALIGKNENT]

400112,

309%

mod

td)

216kiz

BLACK

|

symmetry

of

the

oscilloseore

:

32dBuCANT

input)

(x05-)_|

display.

Connection

7

Fa

ae

sit

Limo

yh

ROR

paren,

27

A-711/711L

ADJUSTMENT

Timer

accuracy

improvement

method

1C5(X05—)

CXPS0112-1270

Qt

-2SK241

High-impedance

FET

probe

"Unless

available,

make

it

for

yourself.

Frequency

counter

The

timer

accuracy

is

within

+40

seconds

for

one

month

as

a

standard.

For

improved

timer

accuracy,

perform

the

fol-

lowing

procedure:

:

(1)

If

the

timer

accuracy

is

without

the

standard,

replace

X3

(L77-1175-05)

near

the

microprocessor

IC

on

a

printed

board

(X05-}.

(2)

Even

if

within

the

standard,

for

further

improved

accura-

cy,

change

the

constant

of

C99

in

the

crystal

oscillation

circuit

of

microprocessor

IC5

and

add

a

trimmer.

Adjustment

method

(Use

a

high-impedance

buffer

to

avoid

frequency

deviation.}

Connect

a

high-accuracy

frequency

counter

to

74

by

way

of

the

FET

probe

shown

above,

and

adjust

the

frequency

fully

up

to

the

first

digit

of

the

X3

reference

frequency

4,194,304

Hz.

(Connect

the

negative

(—}

side

of

the

frequency

counter

to

the

GND

side

of

C99.}

Note

{a}

As

regards

the

positive

(+)

side

of

the

frequency

28

counter,

arrange

as

short

a

distance

as

possible

be-

tween

74

of

IC5

and

1P

of

the

input

stage

of

the

FET

probe.

Capacitance

value

of

additional

trimmer

C8

constant

modification

22

pF

titanium

capacitor

(CC45FCHTH220J)

20

pF

(red),

C05-0303-05

Qi:

2SK241(GR,

BL)

4:

Drain

(D)

12

3

2:

Source

(S)

out

sh

{View

from

leg

sida).

Additional

trimmer

=

q

Modification

7

~~

77

7

=

1

'

99

ete

So

{Changed

to

22

pF

|

Note:

Disconnect

the

C99

connected

on

the

X05

board,

and

add

a

trimmer.

{it

is

necessary

to

make

a

hole.)

Next,

connect

a

22

pF

titanium

input:

1

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supply

circuit)

before

the

appliance

is

returned

to

the

customer.

GND

:

SS

OUTPUT

inpuT

OUTPUT

oG

:

GND

=

-

as

a

INPUT

(Case)

ae

4

:

ace

wy

=

Y05-2500-11

A-711/711L

KENWOOD

Kenwood A-711 User manual

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