Kenwood KD-9X Manuel utilisateur

setViCe

MANUAL

IVE

FULL-

ABLE

Knob

Turntable

cover

ass'y

Magnetic

cartridge

{K29-0978-04)

(A53-0255-12)

(T2

1-0083-05)

Plastic

cabinet

ass’y*

{AQ2-)

Knob

(K27-0348-04) (K29-0977-14)

(K29-0976-14)

OMIT

mama

Foot

Audio

cord*

Power

cord*

(JO2-0342-04)

(E30-}

(E30-)

*Refer

parts

list

page

18.

KD-9X/9N6

KD-9X/

9X6

CORD

STRINGING/DISASSEMBLY

FOR

REPAIR

Cord

Stringing

Hook

the

loop

the

cord

the

spring

and

hook

the

spring

arm

base.

Stretch

the

cord

the

direction

the

arrow

@®

Wind

the

cord

turns

around

drive

pulley

and

hook

the

cord

around

pulley

(

Stretch

the

cord

under

the

axis

the

light-interrupting

plate

and

hook

the

cord

around

pulley

(

Hook

the

loop

the

arm

base.

Light

interrupting

plate

Tonearm

Pulley

Removal

Tonearm

ass‘y

Remove

turntable

sheet

and

turntable

platter

and

turn

the

cabinet

upside

down.

Turn

the

pulley,

connected

the

belt

with

the

motor,

with

finger

(

)

and

move

the

tonearm

from

the

arm

rest

position.

Push

the

solenoid

section

the

tonearm

ass'y

and

move

the

tonearm

farther

from

the

arm

rest

(

Stick

Phillips

screwdriver

through

the

hole

the

chassis

the

tonearm

ass'y

and

remove

the

screw

which

pressing

the

cover

against

the

cabinet

(

Phillips

screwdriver

Phillips

screwdriver

Chassis

tonearm

ass'y

Cover

(for

tonearm

window)

KD-9X/9NG

DISASSEMBLY

FOR

REPAIR

Remove

screws

from

the

reinforce

plate

for

the

cover

for

tonearm

window

(

@®

)}.

Sn“

plate

Remove

screws

retaining

the

tonearm

ass’y

(

screws

the

rear

side

the

cabinet

(

)

and

screw

retaining

the

cord

clamper

(

Tonearm

assy

Reinforce

Tone

arm

Slightly

lift

the

left

hand

side

the

cover,

push

the

right

hand

side

the

cover

the

direction

the

arrow

and

pull

the

cover

out

the

direction

the

arrow

®.

Cover

(for

tonearm

window)

Push

the

solenoid

section

the

tonearm

ass’y

and

move

the

tonearm

that

the

tonearm

can

seen

through

the

hole

shown

the

figure

below.

Rotate

the

tonearm

ass'y

shown

the

arrow

@).

When

rotating,

careful

the

tonearm

and

the

cartridge

does

not

touch

the

cabinet.

Note:

When

the

tonearm

ass’y

once

removed

replaced,

adjustment

must

done.

Tonearm

ass'y

Cabinet

KD-SN/SX6

BLOCK

DIAGRAM

IC2

(3/4,4/4)

IC1

MUTING

RELAY

INTERVAL

M.1.S.

SENSOR

AMP

036~38

SENSOR

SELECT

SWITCH

1C2(1/4,2/4)

AUTO-SIZE

SELECTOR

A.S.S.

DETECT

AMP

Q4~6

SOLENOID

HOLD

SOLENOID

MICROPROCESSOR

KICK

ARM

REST

IC4

(3/4,4/4)

Q20

BUZZER

osc

ARM

POSITION

DETECT

PULSE

GENERATOR

PULSE

COUNT

1C3(3/4,4/4)

1C3(1/4),.Q18

MOTOR

INERTIA

ERROR

AMP

CONTROL

COMPENSATE

MOTOR

DRIVER

UTE

BLOCK

DIAGRAM.

OUTPUT

120V

Q29~33

POWER

SUPPLY

MICRO-

PROCESSOR

INITIALIZE

Q15

Q27,28

LOCK

LED

33/45

rpm

DRIVER

LED

DRIVER

MOTOR

IC5

1C6(2/2),021

PLLIC

HALL

D15

CUEING

LED

1C7,022~25

STATOR

D16

MOTOR

REPEAT

LED

REPEAT

DRIVER

LED

IC6

(41/2)

apa

=p a=

a»

ae ow

awa

SPEED

SELECTOR

D-3N/9X6

CIRCUIT

DESCRIPTION

NEW

PARTS

DESCRIPTION

Mechanism

Control

(LM6405-042)

‘In

the

KD-9X

the

movement

the

PORT

;

Plea

tonearm

controlled

micro-

processor.

This

microprocessor

N-

64x

4-bit

ete

channel

E/D

MOS

4-bit

microprocessor

py,

RAM

tom

LSI

42-pin

dual-in-line

package.

The

block

diagram

the

microprocessor

shown

fig.

PGo-3

core

STACK

PLAg-7

Timer

counter

POR

PEo-s

PORT PORT

PORT

—

INT

—~-O

Xtal

PDo-3

PCo-3

PBo-3

PAo.3

EXtal

~*OVpp

Accumulator

*OVss

: :

Carry

ALU

Arithmatic

and

logic

unit

Data

pointer

Temporary

carry

Program

counter

PLA

Programmable

logic

array

Fig.

Block

diagram

microprocessor

(LM-6405-042)

Description

Pins

The

input/output

terminals

are

determined

the

usage

the

microprocessor,

and

each

input/output

circuits

will

se-

tected

for

them.

this

microprocessor,

the

following

input

output

circuits

are

selected.

pee

eee

input

only

“LAY

jouurenty

—

/V/L“Toojoo|rul

Prouansoanu

[7]

pos

hool

V/V)

High

threshold

input

gate

(H)

input

only

Terminal

High

threshold

input/open

drain

output

(H.OD)

input

and

output

Open

drain

output

(OD)

output

only

Terminal

Pulled-up

output

(PU)

output

only

Terminal

—-

KD-9X/SX6

CIRCUIT

DESCRIPTION

Terminal

names

and

their

uses

are

shown

the

following

table.

INPUT

TERMINALS

Terminal

names

Usage

Auto-size-selector

(A.S.S.)

signal

input

Auto-size-selector

(A.S.S.)

signal

input

Music-interval-sensor

signal

input

Pulse

generator

signal

input

PROGRAM¢PLAY/CUT

switch

input

REPEAT

switch

input

CUEING

switch

input

33-AUTO-45

switch

input

FORWARD

switch

input

REVERSE

switch

input

Turntable

lock

signal

input

Tonearm

rest

position

detect

signal

input

Note:

Turntable

lock

signal

‘’H’’

when

the

turntable

quartz

locked

and

“L”

for

others.

OUTPUT

TERMINALS

Terminal

names

No.

Solenoid

drive

signal

output

Solenoid

drive

signal

output

Not

used

Not

used

7-segment

display

(a)

output

7-segment

display

(b)

output

7-segment

display

(c)

output

7-segment

display

(d)

output

7-segment

display

(e)

output

7-segment

display

{f)

output

7-segment

display

(g)

output

CUEING

LED

display

output

Piezoelectric

buzzer

signal

output

Not

used

REPEAT

LED

display

output

Not

used

FORWARD

drive

signal

output

REVERSE

drive

signal

output

Turntable

ON/OFF

signal

output

Turntable

speed

signal

output

Note:

FORWARD

drive

signal

drive

the

tonearm

to-

ward

the

spindle

when

FORWARD

key

pressed.

REVERSE

drive

signal

drive

the

tonearm

away

from

the

spindle

when

REVERSE

key

pressed.

OTHER

TERMINALS

Terminal

Usage

names

Xtal

For

connecting

resonator

for

internal

oscillation

INT

{interrupt

request

signal

input

RES

Reset

signal

input

TEST

For

testing

LS!

(normally

connected

OV)

GND

terminal

for

power

supply

Power

supply

(

5V)

External

clock

input

(When

using

internal

clock,

connect

the

resonator

between

this

and

1.)

Note:

Immediately

after

the

power

turned

on,

"L”

signal

ap-

plied

RES

terminal.

This

initializes

all

output

ports

“H”.

Then

the

program

starts

and

appropriate

signals

are

output

each

ports.

Music-interval

Detection

Sensor

the

KD-9X,

photo

sensor

(photo

interrupter)

concealed

the

cartridge.

For

this

reason,

when

the

sensor

found

defective,

cartridge

must

changed.

When

the

stylus

tip

above

the

record

disk

surface,

the

point

where

the

sensor

detects

0.5

closer

the

spindle

from

the

point

right

below

the

stylus

tip.

Maximum

reflected

output

Spindle

Record

disk

surface

5am

Fig.

Cartridge

viewed

from

the

front

D-3N/SNG

CIRCUIT

DESCRIPTION

Tracking

Error

Detection

Sensor

(ON1108)

Photo

interrupter

ON1108

used

for

detecting

the

tracking

error.

shutter

connected

the

tonearm

placed

between

the

LED

and

the

photo

transistor.

The

tracking

error

detected

the

relation

between

the

position

the

shutter

and

the

collector

current

the

photo

transistor.

Position

the

shutter

{c:

Collector

current

the

photo

transistor

lo:

Collector

current

the

photo

transistor

when

the

shutter

fully

open

Is:

Collector

current

the

photo

transistor

when

the

shutter

fully

closed

los:

Collector

current

the

photo

transistor

when

offset

adjustment

made

Fig.

Relation

between

the

position

the

shutter

and

the

collector

current

the

photo

transistor

Shutt

utter

Photo

interrupter

{ON1108)

——

Spindle

(i) (i)

til)

mam

(i)

When

the

shutter

fully

closed

(Ic=Is)

(ii)

When

the

shutter

set

offset

position

(lc=los)

(iii)

When

the

shutter

fully

opened

(Ic

=!o)

Fig.

Shutter

viewed

from

the

bottom

The

shutter

moves

out

from

the

slit

the

photo

interruptor.

the

tonearm

moves

toward

the

spindle.

That

means

the

shutter

moves

the

direction

that

the

light

from

the

LED

reaches

the

photo

transistor

increases.

The

increased

col-

lector

current

detected

move

the

arm

base

that

the

tracking

error

becomes

zero.

Pulse

Generator

Sensor

for

detecting

Tonearm

Posi-

tion

(ON1128)

Rotating

shutter

Photo

interrupter

Photo

interrupter

ON1128

used

for

detecting

the

position

the

tonearm.

rotating

shutter

placed

between

the

LED-and

the

photo

transistor.

This

rotating

shutter

con-

nected

the

motor

that

rotates

when

the

motor

moves.

the

same

time,

the

cord

attached

the

arm

base

ass'y,

the

tonearm

moves.

When

the

rotating

shutter

rotates,

the

photo

transistor

the

photo

interrupter

repeats

ON/OFF.

This

ON/OFF

action

the

photo

transistor

counted

pulse

detect

the

AUTO-IN

and

RETURN

position.

Set-up

pulse

count

from

the

arm

rest

position

shown

the

following.

AUTO-IN

position

for

disk

405

pulses

for

disk

736

pulses

RETURN

position

for

disk

8971

pulses

for

disk

916

pulses

INPUT

SETTING

ADJUSTMENT

OUTPUT

SETTING

TURNTABLE

SETTING

ALIGNMENT

POINTS

KD-SX/9X6

ALIGN

FOR

OFFSET

(1)

Disconnect

PH1

and

connect

voltmeter

IC3

(PHA3-

Remove

the

tonearm

from

its

rest

and

lower

OFFSET

(2)

Connect

voltmeter

1C2

(PHA3-

Raise

and

lower

the

tonearm

several

times,

then

leave

itin

the

position

Adjustment

screw

under

the

tonearm

DISTANCE

BETWEEN

THE

STYLUS

AND

DISK

SURFACE

SENSITIVITY

THE

SELECTION

SENSOR

(1)

Record

Connect

PHA1

SIZE:

17cm

Tonearm:

Auto-IN

Adjustment

screw

the

rear

side

the

tonearm

Test

record

(T99-02

16-05)

Connect

Voltmeter

IC2

(PH3-

©)

Lift

the

tonearm

and

move

the

center

the

audio

band

using

the

FORWARD

and

REVERSE

buttons

Turn

VR2

all

the

way

the

right.

Adjust

VR1

that

the

voltmeter

reads

100

mV.

SENSITIVITY

THE

SELECTION

SENSOR

(2)

ACCURACY

THE

SELECTION

SENSOR

AUTOMATIC

LEAD-IN

Test

record

{T99-02

16-05)

Test

record

(799-02

16-05)

Test

record

(W05-0036-00)

SELECTION

SENSOR

Test

record

(T99-0216-05)

Connecto

voltmeter

1C2

(PHA3-

®)

(A)

Lift

the

tonearm

and

move

the

center

the

unrecorded

band

using

the

FORWARD

and

REVERSE

buttons

Specify

selection

number

with

the

PLAY/CUT

key

Specify

selection

number

with

the

PLAY/CUT

key

Connect

oscilloscope

IC4

Specify

selection

number

with

the

PLAY/CUT

key

Power

cord

Adjustment

screw

tone-

arm

ass'y

Turn

VR4

all

the

way

the

left,

then

turn

gradually

the

right

that

the

tonearm

lowered

onto

the

lead

groove

preceding

the

selection.

VR5

400~

500

REGLAGE

L'ENTREE

REGLAGES

REGLAGE

SORTIE

REGLAGE

TOURNE-DISQUE

POINTS

L’ALIGNMENT

ALIGNER

POUR

DECLALAGE

(1)

Débrancher

PHA

connecter

voltmétre

fiche

IC3

(PHA3-@)

Enlever

bras

lecture

son

support

baisser

DECALAGE

(2)

Connecteur

voltmétre

fiche

1C2

(PHA3-

Lever

baisser

bras

lecture

plusieurs

fois,

ensuite,

laisser

dans

position

relevé

Vis

réglage

sous

bras

lecture

DISTANCE

ENTRE

POINTE

LECTURE

ETLA

SURFACE

DISQUE.

Disque

Connecter

PHA1

SIZE:

17cm

Bras

lecture:

Marche

Vis

réglage

l'arriére

bras

lecture

SENSIBILITE

DETECTEUR

SELECTION

(1)

Disque

d’

essai

(T99-02

16-05)

Connecter

voltmétre

fiche

IC2

(PHA3-

©)

Lever

bras

lecture

déplacer

vers

centre

bande

audio

utilisant

les

boutons

FORWARD

REVERSE

Tourner

VR2

fond

vers

droite.

Régler

VR1

maniére

que

voltmétre

indique

100

SENSIBILITE

DETECTEUR

SELECTION

(1)

Disque

d’essai

(T99-0216-05)

PRECISION

DETECTEUR

SELECTION

Disque

d'essai

(T99-0216-05)

Connecter

voltmétre

fiche

IC2(PHA3

Lever

bras

lecture

etle

déplacer

vers

centre

Bande

non-enregistrée

utilisant

les

boutons

FORWARD

REVERSE

Spécitier

numéro

sélection

avec

touche

PLAY/CUT

Tourner

VR4

fond

vers

‘a

gauche,

ensuite

tourner

doucement

vers

droite

maniére

que

bras

lecture

descende

sur

sillon

d'anttaque

précédant

sélection.

Disque

d’essai

MARCHE

(WO5-0036-00)

(A)

Spécifier

numéro

sélection

avec

touche

PLAY/CUT

Vis

réglage

assemblage

bras

Jecture

DETECTEUR

SELECTION

Disque

d'essai

(T99-0216-05)

Connecter

!'oscillo-

scope

fiche

10 de

IC2

(PHA3-

Speécifier

numéro

sélection

avec

touche

PLAY/CUT

Vers

prise

400

500

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