Yamaha Px-2 User manual

-l

<

—

=

<

=

a

OWNER

a

Mo

P;

YAMAHA

thanks

and

congratulates

you

on

your

purchase

of

the

YAMAHA

Linear

Tracking

Stereo

Turntable

Unit,

PX-2.

The

PX-2

uses

for

its

tonearm

section

a

linear

tracking

straight

arm

with

excellent

tracking

ability,

in

addition

to

a

direct

drive

turntable

driven

by

a

DC

4-phase,

8-pole

coreless

Hall

motor

with

a

starting

torque

of

not

less

than

1

kg-cm.

Easy-to-operate

because

of

its

fully

automatic

control

functions,

the

PX-2

represents

the

best

in

record

playing

systems.

CONTENTS

Features

oo

rati

a

A

EE

anve

ea

a

CAUTION

-

Read

This

First

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

3

STEN

4

FAZER

e

5

Identification

and

Functions

of

Controls.]....

7

p

ae

Gide

9

10

How

to

Play

Discs

.

SKU

E

chee

By

ka

Aa

ee

SU

SÈ

11

EE

VASE

12

né

kona

KA

ei

e

intro

13

14

Schematic

Diagram

FEATURES

Linear

Tracking

Straight

Arm

Employing

a

linear

tracking

arm

that

boasts

a

horizontal

tracking

error

angle

of

within

+0.15°,

offset

angle

and

inside

force

of

“0”,

the

PX-2

features

reproduction

of

clearer

sounds

with

less

distortion

than

conventional

Swing

type

tonearms.

And

because

of

its

tonearm

height

adjusting

mechanism,

it

enables

stroke

changes

within

+4mm,

and

accepts

practically

all

kinds

of

cartridges

currently

available

on

the

market.

Fully

Automatic

Control

Mechanisms

By

intergrating

the

disc-size

selector

with

the

PLAY

switch

of

the

turntable,

the

unit

is

provided

not

only

with

automatic

control

functions

that

enable

one-touch

AUTO

LEAD-IN,

AUTO-RE-

TURN

and

REPEAT

play,

but

also

with

manual

control

functions

that

enable

speed

change,

CUE-

ING

UP,

CUEING

DOWN

and

LEAD-IN

and

LEAD-OUT

without

opening

the

dust

cover,

Quartz

Oscillator

Phase-Locked

Turntable

The

speed

of

revolution

of

the

DC

4-phase,

8-pole

careless

Hall

motor

(Starting

torque:

Not

less

than

1

kq-cm)

is

locked

by

a

PLL

(Phase

locked

loop)

mechanism,

which

uses

the

oscillat-

ing

frequency

of

a

quartz

crystal

oscillator

as

its

reference

frequency.

Freedom

from

tempera-

ture-

and

time-induced

drift

and

temporal

changes

ensures,

stable

and

powerful

rotation

of

the

turntable

with

speed

accuracy

as

high

as

+20

ppm,

or

better.

When

steady

rotation

of

the

platter

is

achieved,

the

LOCKED

indicator

lights

up

to

indi-

cate

phase-lock.

Heavyweight

Platter

and

Mat

This

platter,

which

measures

31

cm

in

diameter,

weights

2.1kg

and

has

a

moment

of

inertia

of

270

kg-cm“

(both

figures

including

the

rubber

mat),

Wow

and

flutter

have

been

suppressed

to

the

minimum

and

smooth

rotation

ensured.

Heavyweight

Cabinet

and

Dust

Cover

The

cabinet

is

made

of

5

mm-thick

aluminum

diecast

panels

featuring

high

rigidity.

The

heavy-

weight-class

body

weights

17

kg

in

total.

The

dust

cover

is

made

of

5

mm-thick,

1.3

kg.

This

design

protects

the

turntable

unit

from

harmful

external

vibrations

and

provides

resistance

against

‘howling’

(acoustic

feedback

from

speakers).

Other

Features

Other

features

include

a

constant-voltage

power

circuit

providing

sufficient

allowance

and

operat-

ing

properties.

In

addition,

the

PX-2

has

been

designed

to

provide

the

user

optimum

ease

of

use,

with

many

features

exclusive

to

Yamaha.

At

Yamaha,

we're

always

a

few

steps

ahead

of

other

audio

makers.

WARNING

To

prevent

fire

or

shock

hazard,

do

not

expose

this

appliance

to

rain

or

moisture.

IMPORTANT!

Please

record

the

serial

number

of

your

unit

in

the

space

below:

Model

Name:

PX-2

Serial

No.

The

serial

number

is

located

on

the

rear

of

the

chassis.

Special

Instructions

for

British

Model

IMPORTANT!

|

The

wires

in

the

mains

lead

are

coloured

in

accordance

with

the

following

code:

Blue:

NEUTRAL

Brown:

LIVE

As

the

colours

of

the

wires

in

the

mains

lead

of

this

apparatus

may

not

correspond

with

the

coloured

markings

identifying

the

ter-

minals

in

your

plug,

proceed

as

follows.

The

wire

which

is

coloured

BLUE

must

be

con-

nected

to

the

terminal

which

is

marked

with

the

letter

N

or

coloured

BLACK.

The

wire

which

is

coloured

BROWN

must

be

con-

nected

to

the

terminal

which

is

marked

with

the

letter

L

or

coloured

RED.

PX

Ren

L]

Location

of

instaliation.

Avoid

placing

the

PX-2

where

its

total

quality

will

be

illaffected,

or

malfunctions

result,

from

excessive

heat

(in

direct

sunlight

or

near

heating

equipment),

cold,

humidity

or

dust,

[I

Use

of

benzene

or

thinners

is

to

be

strictly

avoided.

Do

not

wipe

the

cabinet

with

chemical

solvents

(such

as

benzene

or

thinner),.

or

spray

aerosol-type

insecticides

near

the

machine.

Adhesion

of

benzene,

or

thinner

will

cause

stains

or

discolor

the

cabinet.

Be

sure

not

to

let

record

spray

reach

the

cabinet

when

cleaning

discs.

Clean

only

with

a

soft,

dry

cloth.

LI

Handle

with

care.

Careless

handling

—

knocking

against

it,

dropping

something

on

it

—

may

damage

the

product

and

deteriorate

performance.

Be

sure

to

handle

it

with

care.

O

Select

a

place

free

of

vibrations.

Do

not

place

the

PX-2

in

locations

subject

to

high

vibrations,

or

close

to

a

speaker

system.

Select

a

firm

base

to

place

it

upon.

C]

Avoid

using

an

old,

worn

down

stylus.

The

service

life

of

a

stylus

differs

according

on

the

condition

of

discs

but,

in

normal

use,

a

diamond-

tip

stylus

should

be

replaced

after

200

~

300

hours

of

use.

Using

a

worn-down

stylus

may

cause

distor-

tion,

‘’scratchness’’

and

damage

to

discs.

L!

Handle

the

power

cord

with

care;

grasp

the

plug

when

removing

the

cord

from

the

AC

outlet

socket.

LI

Place

at

a

sufficient

distance

from

amplifiers.

When

installing

in

parallel

with

the

audio

amplifier

to

which

it

is

to

be

connected,

place

the

PX-2

so

that

the

tonearm

will

be

as

far

away

as

possible

from

the

power

transformer

side

of

the

amplifier.

Also

be

sure

to

keep

the

output

cord

separated

ata

distance

from

the

power

supply.

L]

Keep

it

level,

Speed

of

revolution

and

tonearm

movement

will

be

adversely

affected

if

the

turntable

is

not

properly

leveled.

[1

Moving

and

transportation.

When

it is

necessary

to

move

the

unit

—

for

example,

to

change

the

layout

of

the

listening

room

—

be

sure

to

keep

the

unit

level.

If

tilted,

there

is

danger

of

the

arm

unit

slipping

out.

When

transporting

it

when

moving

to

another

house,

pack

it

firmly

to

protect

the

arm

unit,

(Refer

to

Page

4.)

LI

If

a

foreign

object

falls

inside.

The

section

the

tonearm

moves

over

is

of

an

open

construction

for

mechanical

reasons:

special

attention

should

be

paid

not

to

drop

any

foreign

object

inside,

If

something

should

fall

inside,

turn

off

the

power

switch

immediately

and

remove

the

object.

If

it

has

fallen

into

an

inaccessible

place,

do

not

attempt

to

open

the

cabinet;

instead,

contact

your

local

YAMAHA

dealer

or

service

representative.

O

Keep

this

Owner’s

Manual

in

a

safe

place

for

future

reference.

LI

The

voltage

selector

switch

on

the

cabinet

of

the

PX-2

must

be

set

for

your

local

mains

voltage

BEFORE

plugging

in

the

AC

main

supply.

Voltages

are

110/120/130/220/230/240

V

AC,

50/60

Hz.

(General

Model

Only)

VOLTAGE

SELECTOR

(General

Model

Only)

U.S.A.,

Canadian

and

British

Models

The

following

“CAUTION”

label

is

attached

to

the

cabinet.

“

CAUTION-TO

PREVENT

ELECTRIC

SHOCK,

DO.

"NOT

REMOVE

COVER

OR

SCREWS.

NO

USER-

SERVICEABLE

PARTS

INSIDE,

PILOT

LAMPS

SOLDERED

IN

PLACE.

REFER.

SERVICING

TO

QUALIFIED.

SERVICE

PERSONNEL.

`

isois

PX-

Removing

the

transit

screws

The

arm

unit

has

been

secured

with

screws

on

the

rear

side,

and

by

an

arm

fixing

plate

on

the

front

in

order

to

protect

the

arm

unit

from

vibrations,

etc.

during

transport.

Remove

the

screws

and

fixing

plate

before

using

the

PX-2.

Keep

the

screws

together

with

the

carton

box

for

future

transport.

1.

Remove

the

transport

fixing

plate.

(Front

side)

When

transporting,

do

not

forget

to

resecure

the

tonearm.

Lower

the

tonearm

unit

to

its

lowest

position.

Firmly

tighten

the

LOCK

A

knob

and

fix

it

in

position

with

the

arm

fixing

plate

and

vinyl

string.

Phillips

screwdriver

-Arm

fixing

plate

`

|

7/

Remove

the

vinyl

string

before

Fixing

unscrewing

the

two

fixing

screws.

screws

:2)

Fig.

1

2.

Remove

the

three

transport

fixing

screws.

(Rear

side)

When

transporting,

do

not

forget

to

resecure

the

arm

unit

with

the

fixing

screws.

To

remove

the

fixing

screws

(and

also

to

fix

the

arm

unit

for

re-transport),

raise

the

rear

side

of

the

unit.

FAN

SÈ

E

>Transpont

fixing

screw

Sl

=

:

How

to

fix

the

arm

unit

for

transport

When

it

is

necessary

to

transport

the

unit,

the

arm

unit

should

be

fixed

without

fail

in

the

following

seguence

to

protect

the

arm

unit.

Failure

to

secure

the

arm

unit

when

the

unit

is

to

be

transported

may

lead

to

disorders.

1.

After

moving

the

tonearm

to

the

extreme

right,

disconnect

power.

Then,

remove

the

platter,

headshell,

dust

cover

and

main

weight.

2.

Referring

to

Fig.

2,

fix

the

arm

unit

in

place

with

the

three

transport

fixing

screws.

3.

Referring

to

Fig.

1,

fix

the

tonearm

in

place

with

the

arm

transport

fixing

plate.

Be

careful

not

to

over-tighten

the

fixing

screws.

*

Accessories

Dust

cover

hinges

Cartridge

set

screws

(l=16mm

x

4,

|=10mm

x

4)

Serial

nuts

(x

2)

Washers

(x

4)

EP

adaptor

Cap

Headshell

Cartridge

setting

Main

weight

Sub-weights

gauge

=)

Q

ASSEMBLY

AND

CONNECTIONS

Mounting

the

platter

1.

Hold

the

platter

as

illustrated

in

Fig.

3

and

fit

it

gently

onto

the

center

shaft.

2.

Place

the

rubber

mat

over

the

platter.

Rubber

mat

Platter

———~

Center

shaft

Fitting

of

cartridge

The

head

shel!

of

the

PX-2

permits

attachment

cartridges

within

5~11g

without

using

sub-weights.

When

fitting

the

cartridge

onto

the

head

shell,

con-

nect

the

lead

wires

of

the

head

shell

to

the

pins

of

the

cartridge

correctly.

_„—

Cartridge

set

screw

White

(L+)

Li

Cartridge

i

(5

~

119)

Qy-—

Serial

nut

Fig.

4

#

Cartridges

in

the

weight

range

of

over

11g

up

to

16g

can

be

used

by

removing

the

left

and

right

caps

of

the

main

weight

as

shown

in

Fig.

5

and

fitting

on

the

supplied

sub-weights.

Remove

the

caps

(screw

type).

Sub-weight

Main

weight

Fit

on

the

supplied

sub-weights.

Likewise,

for

the

opposite

side,

remove

the

cap

and

fit

on

the

sub-weight.

l

Fig.

5

©

Do

not

use

cartridges

weighting

over

11g

without

using

the

sub-weights

as

it

will

cause

damage

to

the

stylus

tip

and

disc.

e

When

using

a

head

shell

other

than

the

one

pro-

vided

as

standard

accessory,

or

a

cartridge

inte-

grated

with

a

head

shell

that

is

provided

with

a

finger

hook

may

come

in

contact

with

the

dust

cover.

|f

such

is

the

case,

replace

the

head

shell

with

the

standard

one,

or

use

it

with

the

finger

hook

disconnected,

©

Position

to

fit

cartridge

The

cartridge

fitting

position

is

determined

by

placing

a

setting

gauge

against

the

cartridge

as

shown

in

Fig.6

and

matching

the

stylus

point

of

the

cartridge

with

the

STYLUS

POINT

marking

on

the

gauge.

Firmly

fix

the

cartridge

in

position.

Stylus

point

Stylus

point

—

When

fitting

on

the

cartridge,

confirm,

by

viewing

the

cartridge

from

the

front,

that

the

cartridge

is

properly

centered

with

the

head

shell.

Otherwise,

the

tonearm

may

descend

to

an

incorrect

position

when

searching

out

the

beginning

of

a

program.

Assembling

the

tonearm

1.

Push

the

main

weight

into

the

tonearm

from

the

rear,

while

turning

the

black

knob

of

the

main

weight

in

the

direction

of

the

arrow

as

shown

in

Fig.

7.

.

After

the

spiral

grooves

cut

inside

the

main

weight

engage

with

the

click

stopper

on

the

rear

of

the

tonearm,

the

main

weight

will

move

forward

smoothly

when

further

turned

counter-

clockwise

(toward

the

left

when

viewed

from

the

front

of

the

tonearm),

and

backward,

when

turned

clockwise

(to

the

right).

.

With

the

projected

facing

upward,

insert

the

head

shell

fitted

with

the

cartridge

into

the

lock

nut

on

the

forward

end

of

the

tone-

arm.

Rotate

the

lock

nut

to

secure

the

head

shell

firmly.

Main

weight

*

Make

sure

that

the

main

weight

is

fitted

on

in

the

correct

direction.

Rear

end

of

tonearm

a

Head

sheli

X

Lock

nut

(Rotate

the

nut

to

secure

the

head

„shell

firmly.)

Cartridge

Fig.

7

Attaching

the

dust

cover

1.

insert

the

dust

cover

hinges

into

the

left

and

right

receptacles

provided

on

the

rear

of

the

cabinet.

(Arrow

D

)

.

Next,

insert

the

two

recessed

portions

of

the

dust

cover's

rear

surface

into

the

hinges.

(Insert

both

left-and

right-side

hinges

together

at

the

same

time.)

(Arrow

(2)

)

.

The

dust

cover

can

be

freely

detached

or

at-

tached.

To

remove

it,

reverse

the

proceduce

outlined

above.

L.

Ps

Dust

cover

Recessed

li.

£

ae

e

portion

A,

AM.

Cabinet

`

Receptacle

Fig.

8

Insulator

height

adjustment

This

unit

weights

17

kg.

It

is

necessary,

there-

fore,

to

install

it

on

a

firm

base

or

table.

After

placing

it

on

the

base

or

table,

adjust

the

height

of

the

insulators

to

properly

level

the

unit.

insulator

Connections

After

completing

assembly

of

the

platter

and

tone-

arm,

follow

the

directions

given

below

to

connect

the

amplifier.

1.

Connect

the

output

cord

leading

out

from

the

cabinet's

rear

to

the

PHONO

terminal

of

the

audio

amplifier.

Do

not

mistake

the

L

(Left

channel)

for the

R

(Right

channel).

The

white

one

is

L

and

the

red

R.

(Fig.

10)

.

Connect

the

black

ground

wire

leading

out

from

the

output

cord

to

the

GND

terminal

of

the

audio

amplifier.

Depending

on

the

type

of

the

amplifier,

however

better

results

with

regard

to

hum

noise

may

sometimes

obtained

if

the

ground

wire

is

not

connected.

Choose

which-

ever

of

the

two

that

results

in

less

hum.

.

Connect

the

power

cord

to

an

AC

wall

outlet,

Or

a

spare

power

supply

socket

(AC

outlet)

in

the

audio

amplifier.

“

When

the

power

plug

of

this

unit

is

con-

nected

to

a

spare

“SWITCHED”

power

supply

socket

of

the

amplifier,

the

power

switch

of

the

amplifier

will

be

interlocked

with

the

switch

of

this

unit,

permitting

simultaneous

POWER-ON.

(In

this

case,

the

power

switch

of

this

unit

should

be

kept

switched

on.)

Ground

wire

&

YAMAHA

UNEAR

TRACKING

QUARTZ

LOCKED

P

X-2

WUAH!

Z

LOCKED

tat

DANS

PVE

AE.

mn

PLAY

DISC

SIZE

m

„

a

b

"pb

ACPFAT

ay

EB

a)

POWER

(Power

Switch)

When

this

switch

is

depressed,

power

will

be

switched

on,

and

the

LED

(indicator)

beneath

the

switch

will

light

on.

To

disconnect

power,

depress

this

switch

again.

D

SPEED

(Speed

Changing

Switch)

This

switch

functions

to

change

the

speed

of

the

platter.

©

When

a

33-1/3

r.p.m

disc

is

to

be

played,

depress

the

“33”

switch.

The

“33”

indicator

will

illumi-

nate,

e

When

playing

a

45

r.p.m.

disc,

depress

the

“45”

switch.

The

“45”

indicator

will

illuminate.

When

power

is

switched

on,

the

speed

is

auto-

matically

set

to

33

r.p.m.

©

QUARTZ

LOCKED

(Quartz-Locked

In-

dicator)

This

indicator

shows

that

the

platter

has

attained

stable

rotation

(for

either

33-1/3

or

45

r.p.m.)

and

the

quartz

PLL

mechanism

has

gone

into

the

locked

condition.

ARM

CONTROL

(MANUAL)

<</<

(Leftward

Feed

Switch

for

Tone-

arm)

The

tonearm

will

be

fed

toward

the

left

for

the

duration

this

switch

is

being

depressed.

When

this

switch

is

slightly

depressed,

the

tonearm

will

move

slowly,

wheras,

when

depressed

to

a

further

depth,

the

tonearm

will

move

quickly.

“

When

the

tonearm

has

moved

to

the

extreme

left,

no

matter

whether

the

switch

is

depressed

or

not,

the

arm

will

not

make

any

further

left-

ward

movement.

©

UP

(Cueing-UP

Switch)

Depress

this

switch

to

discontinue

play

temporarily.

The

tonearm

wil!

be

lifted,

removing

the

sylus

tip

from

the

disc

surface.

(6

DOWN

(Cueing-DOWN

Switch)

Depress

this

switch

to

start

play

midway

on

a

disc.

The

tonearm

will

lower

itself,

bringing

the

stylus

tip

in

contact

with

the

disc

surface.

*

When

the

UP

switch,

or

DOWN

switch

is

depres-

sed,

you

will

hear

click.

This

is

neither

an

ab-

normal

noise,

not

an

indication

of

discorder,

but

a

sound

produced

by

the

operating

solenoid

for

cueing.

Be

careful

not

to

depress

the

UP

switch

while

the

tonearm

is

descending,

as

it

may

cause

the

tonearm

to

fly

when

the

“click”

of

the

operating

solenoid

is

heard.

D

>/»»

(Rightward

Feed

Switch

for

Tonearm)

The

tonearm

will

be

fed

toward

the

right

for

the

duration

this

switch

is

being

depressed.

When

this

switch

is

slightly

depressed,

the

tonearm

will

move

slowly,

wheras,

when

depressed

to

a

further

depth,

the

tonearm

will

move

quickly.

*

The

tonearm

will

come

to

a

halt

once

it

reaches

the

extreme

right,

and

the

platter

will

stop

rotating.

AUTOMATIC

PLAY

CUT

(Play

Discontinuing

Switch)

Whenever

this

switch

is

depressed,

the

tonearm

will

start

RETURN

movements,

whatever

opera-

tion

mode

it

may

be

in.

(©

REPEAT

(Repeat

Switch)

Repeat

play

is

possible

by

depressing

this

switch,

in

line

with

the

disc

play

controlled

by

the

PLAY/

DISC

SIZE

switch

(

40

).

During

REPEAT

play,

the

indicator

located

above

the

switch

will

illuminate.

To

end

REPEAT

play,

depress

this

switch

once

again.

“

For

performances

initiated

with

the

ARM

CONTROL

switches

(

through

(7)

),

RE-

PEAT

play

is

not

possible

even

when

this

switch

is

depressed.

PLAY/DISC

SIZE

(Disc

Size

Switch)

This

switch

makes

possible

automatic

play,

by

selecting

the

disc

size

(17

cm,

25

cm

or

30

cm).

When

any

one

of

the

switches

is

depressed,

the

indicator

of

the

selected

size

will

illuminate,

and

the

whole

process

from

the

starting

of

platter,

arm

feed,

cueing-DOWN,

play,

auto-return

to

stop

will

be

automatically

performed.

Be

careful

not

to

make

a

mistake

in

selecting

the

disc

size;

damage

to

the

cartridge

and

stylus

tip

may

result

when

the

wrong

disc

size

is

se-

lected.

When

any

one

of

the

ARM

CONTROL

switches

(

through

(7)

)

is

depressed,

automatic

play

will

be

completely

released.

(Ď

Arm

Height

Adjusting

Knob

After

loosening

the

lock

control

provided

on

the

right-side

of

the

tonearm,

adjust

the

arm

height,

using

the

left-side

A

UPand

V

DOWN

controls.

On

completion

of

adjustment,

lock

the

arm

firmly

by

means

of

the

LOCK

A

control.

(2

Main

Weight

&

BALANCE

Control

Knob

This

control

functions

to

balance

the

tonearm.

When

the

control

is

turned

counterclockwise

(leftward)

as

viewed

from

the

front

of

the

tonearm,

the

main

weight

will

move

forward,

and

when

the

control

is

turned

clockwise,

the

main

weight

will

move

backward.

13

Tracking

Force

Adjusting

Weight

This

determines

the

tracking

force.

Tonearm

ba-

lance

adjustments

are

performed

by

matching

the

forward

end

of

the

weight

with

the

“0”

line.

(The

forward

end

of

the

weight

will

be

the

basic

line

used

for

determining

the

tracking

force.)

Adjusting

tonearm

balance

Once

the

cartridge

is

fitted

on

and

the

tonearm

assembled,

proceed

with

balance

adjustment

as

described

below:

1.

Match

the

forward

end

of

the

tracking

force

adjusting

weight

with

the

“O”

line

(the

farthest

position)

of

the

tonearm.

Ready

the

tonearm

as

if

for

“Play”,

by

removing

the

cover

of

the

stylus

of

the

cartridge,

for

example.

2.

Switch

on

the

power

switch,

and

then

depress

the

CUT

switch.

After

confirming

that

the

tonearm

is

at

the

check

right,

depress

the

DOWN

switch

of

the

ARM

CONTROL

and

examine

the

level

balance

of

the

tonearm.

When

the

head

shell

side

is

too

high,

the

tonearm’s

head

section

(Move

main

weight

backward.)

Balance

control

knob

will

sink,

whereas,

when

the

main

weight

side

is

too

heavy,

the

tonearm's

head

section

will

rise.

„With

the

left

hand

gently

applied

to

the

head

shell,

revolve

the

balance

control

of

the

main

weight

to

attain

perfect

balance.

.

When

steady

balance

has

been

attained,

depress

the

UP

switch,

Adjusting

Cartridge

Tracking

Force

Adjusting

cartridge

tracking

force

is

to

be

per-

formed

only

after

the

tonearm

has

been

properly

balanced.

1.

Do

not

change

the

main

weight’s

pasition

from

where

it

gives

perfectly

leveled

balance.

.

The

scale

engraved

in

the

tonearm

is

graduated

in

units

of

0.1

g.

Match

the

forward

end

of

the

tracking

force

adjusting

weight

to

the

position

on

the

cartridge

that

corresponds

to

the

opti-

mum

tracking

force

for

that

cartridge.

NOTE:

Use

the

tracking

force

adjusting

weight

with

its

flat

surface

facing

downward,

Optimum

tracking

force

for

cartridge

Tracking

force

adjusting

weight

Tonearm

adjustment

should

be

carried

out

in

the

order

shown

below.

|

1.

Adjusting

tonearm

balance

|

a

|

2.

Adjusting

cartridge

tracking

force

|

amè

|

3.

Adjusting

tonearm

height

Adjusting

Tonearm

Height

1.

2.

3

Loosen

the

LOCK

A

knob,

As

if

to

ready

the

cartridge

for

“Play”,

for

example,

remove

the

stylus

tip

cover.

Place

a

disc

on

the

turntable.

Depress

the

PLAY/

DISC

SIZE

switch

to

lower

the

stylus

onto

the

disc

surface.

.

Make

sure

that

the

record

surface

is

parallel

with

the

tonearm

pipe,

by

adjusting

the

A

UP

and

V

DOWN

knob.

.

When

proper

height

adjustment

has

been

attained,

firmiy

tighten

the

LOCK

A

knob,

with

the

tone-

arm

position

unchanged.

Carry

this

adjustment

out

very

carefuliy,

so

that

neither

stylus

nor

disc

are

damaged.

Disc

surface

Tonearm

BIL

Adjust

so

that

the

tonearm

is

parallel

to

the

disc

surface.

Height

contro!

knob

Before

starting

disc

play,

check

and

confirm

proper

connection

of

power

plug,

output

cord

and

ground

wire.

Automatic

Disc

Play

1.

Turn

on

the

POWER

switch

and

place

a

disc

on

the

platter.

2.

Match

the

platter

speed

to

the

disc

speed.

(As

the

turntable

will

be

automatically

set

to

“33”

r.p.m.

when

power

is

turned

on,

the

“45”

button

of

the

SPEED

switch

should

be

depres-

sed

when

a

45

r.p.m.

disc

is

to

be

played.)

3

Matching

it

with

the

size

of

the

disc,

depress

the

PLAY,/DISC

SIZE

button

of

that

particular

size,

This

will

cause

the

DISC

SIZE

indicator

to

light

up.

The

platter

will

start

rotating

and

the

tone-

arm

will

move

up

to

the

prescribed

AUTO-LEAD-

IN

position”

at

which

it

will

descend

to

start

disc

play.

(AUTO-LEAD-IN)

4.

When

disc

play

is

finished

and

the

tonearm

enters

the

LEAD-OUT

groove

on

the

innermost

side

of

the

disc,

the

tonearm

wil!

rise

and

return

to

the

extreme

right,

causing

the

platter

to

stop

at

the

same

time.

(AUTO-RETURN)

“Prescribed

position”

The

AUTO-LEAD-IN

position

is

set

according

to

RIAA

—

specified

records,

the

position

at

which

the

stylus

will

lower

itself

may

not

match

discs

that

do

not

conform

to

RIAA.

For

REPEAT

Play

Start

REPEAT

play

by

depressing

the

PLAY/DISC

SIZE

switch

and

then

depressing

the

REPEAT

switch,

REPEAT

play

will

start

at

the

correct

position

for

the

selected

size.

Likewise,

on

completion

of

disc

play,

the

disc,

through

AUTO-RETURN,

will

return

to

this

position,

and

play

will

be

repeated.

To

release

REPEAT

play,

depress

the

REPEAT

switch

once

again.

This

will

cause

the

indicator

to

go

out

and

the

REPEAT

play

mechanism

to

be

released.

Thus,

on

completion

of

disc

play,

play

will

be

discontinued,

following

AUTO-RE-

TURN

of

the

tonearm.

3

REPEAT

When

a

wrong

disc

size

has

been

selected

‘Immediately

depress

the

switch

corresponding

to

the

proper

size.

This

will

cause

the

tonearm

to

be

transported

to

the

position

of

the

newly

selected

disc-size

to

start

play.

Another

method

to

correct

the

mistake

is

to

depress

the

CUT

switch

first

and

then

depress

the

proper

disc-size

switch.

“

If,

for

example,

a

17

cm

disc

is

placed

on

the

platter

but

the

30

cm

disc-size

switch

has

been

depressed

by

mistake,

it

will

cause

damage

to

the

cartridge

and

stylus

tip.

So

be

extremely

careful

not

to

misoperate

the

size

switches.

SS

R

ONO

When

you

wish

to

skip

a

portion

of

music

1.

Depress

the

UP

switch

of

the

ARM

CONTROL.

The

tonearm

will

rise,

2.

Depress

either

the

LEFTWARD

FEED,

or

RIGHTWARD

FEED

switch

to

move

the

tone-

arm

to

the

desired

position.

The

speed

of

the

tonearm

movement

can

be

controlled

in

two

steps.

This

permits

fine

regulation

of

the

stylus

descending

position.

3.

Depression

of

the

DOWN

switch

will

cause

the

tonearm

to

descend,

initiating

disc

play.

On

completion

of

the

music,

the

tonearm

will

return

automatically

to

complete

operation.

“

When

the

ARM

CONTROL

switch

is

depressed

during

disc

AUTO-PLAY,

will

be

released,

and

REPEAT-PLAY

will

be

released

at

the

same

time

if

it

has

been

selected.

Tonearm

moves

quickly.

Tonearm

moves

slowly.

Fig.

16

10

When

play

is

to

be

started

midway

in

disc

1.

Move

the

tonearm

to

the

desired

position,

using

the

LEFTWARD

FEED

switch.

This

will

cause

the

platter

to

start

rotating.

2.

Depress

the

DOWN

switch

to

lower

the

tonearm

to

start

disc

play.

3.

On

completion

of

disc

play,

operations

will

be

completed,

following

AUTO-RETURN

of

tone-

arm.

REPEAT

play

is

not

possible

when

play

has

been

started

with

manual

operation.

«4

"<A

p-p

b/bb

When

disc

play

is

to

be

discontinued

mid-

way

in

play

Depress

the

CUT

switch.

Play

will

be

discontinued

at

that

position.

Following

AUTO-RETURN

of

tonearm,

operation

will

be

completed.

*

To

protect

the

cartridge

should

power

supply

be

discontinued

because

of

service

interruption

during

disc

play,

or

should

the

power

switch

be

switched

off

by

mistake,

the

unit

has

been

designed

so

that

the

tonearm

will

stop

in

an

uplifted

position.

When

power

supply

has

been

restored,

start

operation

again.

Servo

system

TONEARM

SECTION

Arm

type

Linear

tracking

arm

Photo-electric

tracking

sensor

pius

servo

motor

236

mm

(9-9/32”)

190mm

(7-15/32)

Static

balance

type

sliding

weight

Total

length

Effective

length

Tracking

force

device

system

0

~

2.5

g,

in

0.1

g

steps

Proportional

type

to

tracking

force

1.0

g

(Tracking

force)

16.5g

1.5

g

{Tracking

force)

17.0g

2.0

g

(Tracking

force)

175g

Effective

mass

(In

cartridge-less

state)

Applicable

cartridge

weight

range

5~

11g

(Using

sub-weights

}

10

~

169

Maximum

horizontal

tracking

error

angle

+0,15°

At

stylus

tip

+0.5

mm

Arm

lifter

Oil

damp

type

cueing

Adjustable

range

of

arm

height

+4.0

mm

Head

shell

Pure,

forged

aluminum,

Weight:

8.0

g

Plug-in

type

conforming

to

EIA

Standards

PU

Cable

NEGLEX

2496

Low-impedance,

double

cylindrica!

cord

Capacitance:

130pF

Resistance:

1

2

Cartridge

(Not

provided}

Replaceable

ROTARY

SECTION

Motor

DC,

4-phase,

8-pole

coreless

Hall

motor

Starting

torque

1

kg-cm,

or

more

Drive

system

Direct

drive

Servo

system

Quartz

PLL,

Negative/positive

two-direction

servo

Locking

torque

450

g-cm

F.G.

Total

circumference

integrating

type

Speed

(With

Lock

Indicator}

33-1/3

r.p.m.,

45

r.p.m.

Platter

31

cm

(12-1/4"")

diameter,

aluminum

die-cast

Weight:

2.1

kg

(4.62

Ibs)

(including

rubber

mat)

Moment

of

inertia

270

kg-cm*

(Including

rubber

mat)

EXTERNAL

DESIGN

Cabinet

Aluminum,

die-cast,

Bmm

thick

black

enamel

coating

Dust

cover

Acrylic,

5mm

thick,

weighing

1.3kg

Front

operating

type.

Hinges

Free

stop,

detachable

type

Insulator

Combination

of

spring-and

-rubber

type

with

height

adjustment

CONTROL

SECTION

Automatic

functions

AUTO-LEAD-IN

AUTO-RETURN

REPEAT

AUTO-UP

(During

Power-OF

F)

Size

selector

17/25/30

cm

(7"/10/12"")

Manual

functions

ARM-UP

ARM-DOWN

LEFTWARD

&

RIGHTWARD

2-speed

feeding

CUT

Speed

33-1/3

r.p.m.

and

45

r.p.m.

Others

Power

switch

GENERA

L

S/N

ratio

80dB

(IEC

98A

Weighted)

Wow

and

flutter

0.01%

WRMS

(FG

direct)

Power

supply

and

consumption

U.S.A

&

Canadian

Modeis

European

Model

220V

AC,

50Hz

...

25W

Australian

8

British

Models

240V

AC,

50Hz

...

25W

Genera!

Model

110/120/130/220/230/240V

AC,

50/60Hz

...

22W

493

x

156

x

428

(19-7/16”)

x

(6-5/32”)

x

(16-27/32")

17

kg

(37.4

Ib)

120V

AC,

60Hz

...

25W

Dimensions

(W

x

H

x

D)

mm

Totai

weight

Specifications

are

subject

to

change

without

notice.

PxX-2.

TROUBLE

SHOOTING

If

your

PX-2

ceases

to

function

normally,

check

the

fallowing

trouble

shooting

list.

Only

if

this

fails

to

restore

normal

operation

should

you

contact

your

local

YAMAHA

dealer

or

service

rep-

resentative.

Fault

Balance

(zero)

cannot

be

obtained

after

changing

cartridge.

Cause

amplifier’s

spare

power

supply

socket.

Cartridge

is

either

too

heavy,

or

too

light.

Cure

is

to

be

used,

fit

on

the

sub-weights

and

perform

readjustment.

Re-insert

cord

into

wall

AC

outlet,

or

amplifier’s

spare

power

supply

socket.

The

PX-2

handles

cartridges

in

the

weight

range

of

5g

~

11g:

the

sub-weights

are

not

needed.

When

a

cartridge

of

over

119

REPEAT

play

cannot

be

effected.

PLAY

has

been

started

manually.

Has

been

manually

operated

during

AUTO-PLAY.

First

depress

PLAY/DISC

SIZE

button

and

then

depress

REPEAT

button.

No

sound

is

heard,

or

sound

is

too

faint

although

the

stylus

descends

on

the

disc

surface.

The

body

of

the

cartridge

catches

on

the

disc

surface,

Defective

contact

of

head

sheli

connector.

Amplifier’s

FUNCTION

switch

is

not

positioned

to

PHONO.

Amplifier's

volume

is

turned

down.

Insufficient

contact

of

turntable

output

cord.

Attach

head

shell

to

the

tonearm

properly.

Set

FUNCTION

properly

to

PHONO.

Turn

up

the

volume

to

an

adequate

level.

Check

and

correct

connector

terminals

between

amplifier

and

rear

panel.

Too

heavy

cartridge

stylus

tracking

force.

Inadequate

tonearm

height.

Unpleasarit,

distorted

reproduced

sound,

with

clicking

or

crackling

sounds.

High

frequency

reproduction

is

par-

ticularly

affected.

Unpleasant

reproduced

sounds

with

howling

(droning)

noise.

Inclusion

of

humming

noise

during

disc

play.

Tuintablé

is

slanted

and

not

properly

leveled.

Dust

accumulating

on

the

stylus

tip.

Stylus

tip

is

worn

down.

The

disc

itself

is

damaged

or

is

dirty.

Stylus

tracking

force

is

either

too

light

or

too

heavy.

Amplifier’s

treble

response

has

been

overemphasized.

Turntable

is

installed

too

close

to

the

speaker

system,

or

resonance

has

been

induced

by

vibrations

because

place-

ment

of

turntable

is

unstable.

Readjust

tracking

force

to

optimum.

Adjust

to

proper

tonearm

height,

Correct

by

leveling

turntable

properly.

Clean

stylus

tip

using

special

stylus

cleaning

brush.

Replace

the

stylus.

Replace

with

a

new

disc.

Readjust

the

tracking

force

for

the

cartridge

to

the

recom-

mended

value.

Turn

the

treble

control

back

to

the

flat

position.

Move

turntable

to

a

stabler

place,

or

install

it

farther

away

from

the

speaker,

(Installation

in

a

corner

of

a

room

should

i

be

avoided

in

particular.)

Ground

wire

of

turntable

not

connected

to

amplifier's

GND

terminal.

Defective

contact

of

head

shell

connector.

Connect

ground

wire

to

GND

terminal.

(In

some

cases,

it

is

better

not

to

ground

it.)

Fit

the

head

shell

onto

the

tonearm

correctly,

12

13

x-2

BLOCK

DIAGRAM

TONEARM

CONTROL

CIRCUIT

Angle

Sensor

Tanearm

|

Tonearm

Feeder

(Tracking,

Right,

Left

A

Stop)

:

a

Reference

T

O

Voltage

Serva

Bat

Reference

“LON

Voltage

li

ef

Left

Arm

Right

Limit

Position

Limit

EN

Clock

Regulation

=

Gain

e

;

x

mayi

Contro

=)

PAO

eo

HOLD

Voltage

Band-Pass

l

:

Pre

Arm-Up

Detector

Tonearm

(UP

&

DOWN)

YOD

CR

R

L

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P3 P2

PI

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MOTOR

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Indicator

.

Disturbance

For

Positive-torgue

Genaration

IC2

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5,5296MH2

Crystal

Frequency

E

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|

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JAPAN

Printed

in

Japan

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8002

Yamaha PX-2 User manual

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