Pioneer PL-55DX User manual

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DIRECT

DRIVE

STEREO

TURNTABLE

PL=-55)DX

OPERATING

INSTRUCTIONS

rE

t

Sees

REex

RES

ER

EZ

Mpionecer

||

|

Pioneer

wishes

to

thank

you

for

deciding

to

purchase

the

PL-55DX,

a

direct

drive

stereo

turntable.

Please

read

this

manual

carefully,

as it

covers

proper

operating

procedures

and

steps

which

will

aid

in

obtaining

maximum

per-

formance

from

this

fine

piece

of

equipment.

FEATURES

DIRECT

DRIVE

Troublesome

belts

and

idlers

are

not

used

A

DC

servo

motor

drives

the

turntable

directly.

Design

of

this

system

limits

transfer

of

vibration

to

the

tonearm

to

an

amazingly

low

level.

PL-55DX

gives

performance

a

cut

above

that

of

comparable

record

players,

and

is

sure

to

satisfy

the

most

exacting

audiophile.

ELECTRONIC

SERVO

CONTROL

Ambient

temperature

does

not

affect

the

speed

of

rotation,

thanks

to

special

electronic

circuitry

which

maintains

the

motor

speed

at

a

constant

value

at

all

times.

A

touch

of

a

button

is

the

only

requirement

for

setting

this

circuitry

into

operation.

Speed

switching

is

simple.

Independent

controls

are

used

for

fine

adjustment

of

33-1/3

and

45

rpm

speeds,

(Fine

adjustment

is

effective

within

+2%

of

the

nominal

speed.)

VERSATILITY

PL-S5DX

plays

all

four-channel

records

...

SQ,

RM

matrix

records

and

CD-4

discrete

records.

Ordinary

two-

channel

stereo

records

played

on

PL-55DX

yield

a

mar-

velous

four-channel

effect.

PL-S5DX

is

sure

to

satisfy

your

listening

requirements.

POSITIVE

TRACKING

New

design

provides

for

simple

adjustment

of

lateral

balance

of

an

S-shaped,

statically

balanced

tonearm

and

includes

an

anti-ska

ing

device.

Stable

tracking

is

guaranteed

in

all

cases,

including

of

course

four-channel

record

playing

and

the

use

of

cartridges

featuring

light

tracking

force.

STABLE

OPERATION

A

fully

automatic

mechanism

linked

to

the

function

lever

provides

extra

smooth

tonearm

operation,

automatic

re-

turn,

and

automatic

interruption.

There

is

never

any

need

for

concern

over

record

or

stylus

damage.

NOVEL

DESIGN

The

outward

appearance

looks

as

well

as

turntable

mecha-

nism

performs,

matching

other

contemporary

stereo

system.

Controls

are

grouped

on

the

right

side,

for

con-

venience.

CONTENTS

Features

Installation

Stereo

System

Structure

Line

Voltage

Assembly

Connection

to

Stereo

Amplifier

Tonearm

Adjustments

Parts

Identification

Dust

Cover

Parts

and

Their

Functions

............:seeeseerere

Operation

Cautions

on

Playing

Four-channel

(CD-4)

Records

Nomenclature

and

Use

Cautions

Points

to

be

Checked

Component

Replacement

Specifications

INSTALLATION

Install

the

PL-55DX

with

the

following

points

in

mind.

e

The

place

must

be

well-ventilated

and

free

from

humidity

and

dust.

e

The

unit

should

not

be

exposed

to

direct

sun-

light.

e

The

unit

should

not

be

placed

near

any

souce

of

heat.

e

The

unit

should

be

placed

as

far

from

the

speaker

systems

as

possible.

2

STEREO

SYSTEM

STRUCTURE

FOUR-CHANNEL

STEREO

SYSTEM

Two-channel

stereo

system

in

which

left

and

right

speakers

are

located

in

front

of

the

listener

give

breadth

and

presence

to

piano,

violin,

and

vocal

sounds.

Four-channel

stereo

systems

in

which

left

and

right

speakers

are

located

both

to

the

front

and

rear

of

the

listener

(see

accompanying

illus-

tration)

add

to

these

effects

“‘depth,’’

giving

you

the

feel

of

a

large

space

with

associated

reflections.

All

of

the

sound

is

there,

natural

and

rich

and

“real.”

Select

a

suitable

four-channel

stereo

amplifier

and

speaker

systems

for

your

PL-55DX

(Fig.

1).

TWO-CHANNEL

STEREO

SYSTEM

Connect

a

suitable

two-channel

stereo

amplifier

and

speaker

systems

as

shown

in

the

accompanying

illustration

(Fig.

2).

NOTES

ON

SYSTEM

STEREO

COMPONENTS

Amplifier

Various

four

and

two-channel

configurations

are

available,

including

integrated

stereo

amplifier,

pre-

main

stereo

amplifiers,

and

preamplifier-power

amplifier

combinations.

Selection

is

of

course

a

matter

of

choice

and

budget.

Pioneer

recommends

that

you

select

a

highly

stable

amplifier

and

matched

speaker

systems,

which

will

insure

a

high

performance

level.

Speaker

System

There

are

two

types

of

speaker

enclosures,

the

bass-reflexed

type

and

the

enclosed

type.

Speakers

come

in

full-range,

two-way,

and

three-way

types.

Again

selection

is

a

matter

of

choice

and

budget.

In

four-channel

systems,

it

is

advisable

to

use

identical

speakers

at

the

four

locations(front

left

and

right,

rear

left

and

right).

In

any

event,

requirements

call

for

matched

front

and

matched

rear

speakers.

Phono

Cartridge

Phono

cartidge

types

include

the

magnetic

type

(moving

coil

type,

moving

magnet

type,

and

in-

duced

magnet

type),

semiconductor

type,

and

photoelectric

type.

If

you

wish

to

use

a

cartridge

other

than

one

furnished

with

the

PL-55DX,

a

four-channel

type

should

be

selected

so

that

you

can

play

CD-4

records.

PIONEER

PL-55DX

SSS}

acuannet

mT

OOr

ey

O

oO

|

STEREO

0:00

0-o

oe0e

AMPLIFIER

(CH-1)

(CH-3)

4-CHANNEL

RIGHT

|

SPEAKER

peated

SYSTEMS

(CH-4)

Fig.

1

PL-55DX

2-CHANNEL

STEREO

AMPLIFIER

SPEAKER

SYSTEMS

LEFT

RIGHT

CHANNEL

CHANNEL

&

Fig.

2

LINE

VOLTAGE

Confirm

the

line

voltage

of

your

house

current

before

turning

the

power

on,

because

your

PL-55DX

may

not

be

conditioned

for

operation

with

your

local

line

voltage.

THE

LINE

VOLTAGE

SELECTOR

PLUG,

provided

inside

the

wooden

base,

can

be

seen

when

the

bottom

plate

is

removed

(Fig.

3).

Your

PL-55DX

is

set

for

operation

at

the

voltage

indicated

by

the

caution

card

enclosed

and/or

on

the

carton

box

when

shipped.

If

your

house

current

voltage

is

different

from

the

set

voltage,

regulate

the

line

voltage

for

operation

by

yourself

as

follows:

1.

Unscrew

a

total

of

10

bottom

plate-held

screws

as

shown

in

Fig.

3.

2.

Remove

the

bottom

plate,

and

you

can

find

the

LINE

VOLTAGE

SELECTOR

PLUG.

8.

The

cut-off

of

the

selector

plug

shows

the

voltage

which

operates

the

unit.

(Perhaps,

it

ought

to

be

different

from.

your

local

line

voltage.)

4,

Pull

out

the

selector

plug,

and

put

it

back

as

indicated

in

cut-off

your

house

voltage

110V,

120V,

130V,

220V,

or

240V

(Fig.

4).

ASSEMBLY

To

prevent

possible

damage

during

transport,

heavy

items

and

delicate

parts

are

packed

separate-

ly.

For

assembling

the

PL-55DX,

first

read

instruc-

tions

through

and

proceed

with

great

care

never

to

touch

the

stopper

near

the

center

shaft

as

follows:

REMOVAL

OF

TONEARM

PACKING

Remove

packing

(white)

holding

the

arm,

by

open-

ing

it

in

the

arrow-indicated

direction

as

shown

in

the

illustration

(Fig.

5).

INSTALLATION

OF

TURNTABLE

PLATTER

Unpack

the

turntable

platter

and

place

it

over

the

center

shaft.

Lay

the

rubber

mat

on

the

turntable

platter.

INSTALLATION

OF

HEAD

SHELL

Fit

the

head

shell

to

the

end

of

the

tonearm,

securing

it

with

the

arm

lock

screw

(Fig.

6).

UL

ey

PL-55DX

UVTNVTUTTTTTETTTT

THT

,

UUUTTNUTA

AUT

TET

a)

To

remove

bottom

plate,

unscrew

a

total

of

10

screws.

Fig.

3

LINE

VOLTAGE

SELECTOR

PLUG

TONEARM

PACKINGS

TAKE

OFF

Fig.

5

LOCK

SCREW

HEAD

SHELL

Fig.

6

INSTALLATION

OF

MAIN

COUNTERWEIGHT

Fit

the

main

counterwight

to

the

after

end

of

the

tonearm.

Thread

it

in

two

or

three

turns

in

the

arrow-indicated

direction

as

shown

Fig.

7.

INSTALLATION

OF

LATERAL

WEIGHT

This

component

is

included

in

the

accessory

parts

box.

Fit

it

to

the

bar

and

secure

the

weight

screw

(Fig.

8).

HEIGHT

ADJUSTMENT

OF

ARM

ELEVATOR

The

arm

elevator

can

be

adjusted

after

loosening

the

little

screw

in

its

side

(Fig.

9).

HEIGHT

ADJUSTMENT

OF

ARM

REST

The

height

of

the

arm

rest

is

adjustable

by

first

loosening

the

screw

in

its

side,

sliding

the

rest

to

the

desired

height,

then

tighten

the

screw

again

(Fig.

10).

e

Readjustment

of

the

arm

rest

and

arm

elevation

is

required

when

a

different

cartridge

is

used.

ARM

REST

Fig.

10

CONNECTION

TO

STEREO

AMPLIFIER

The

cartridge

furnished

with

PL-55DX

is

of

the

induced

magnet

type

(PC-Q1).

Connection

should

be

made

to

PHONO

MAG

of

the

stereo

amplifier.

If

four-channel

(CD-4)

records

are

to

be

played,

make

connections

in

accordance

with

the

four-

channel

amplifier

instructions

manual.

e

Connect

PL-55DX

leads

to

PHONO

MAG

of

the

stereo

amplifier.

Be

sure

to

observe

L(Left)

and

R(Right)

markings

(Fig.

11).

e

The

lead

with

a

split

lug

at

its

end

is

the

ground

lead.

Connect

this

lead

between

the

stereo

amplifier’s

GND

terminal

and

PL-55DX’s

E

terminal

(

Fig.

11

).

NOTE:

If

a

low-output

moving

coil

(MC)

cartridge

is

to

be

used,

it

will

be

necessary

to

add

a

special

matching

transformer

or

an

amplifier

which

has

provision

for

connection

of

this

type

of

cartridge.

PIONGCER

Fig.

9

PL-55DX

AC

CORD

CONNECTION

CORD

i

(L

—CH)

STEREO

pa

AMPLIFIER

ja

R

GROUND

AC

OUTLET

RECEIVER

(R—CH)

TERMINAL

Fig.

11

TONEARM

ADJUSTMENTS

LATERAL

BALANCE

Refer

to

the

accompanying

illustration.

Make

sure

that

the

lateral

weight

is

10

~

15mm

from

the

end

of

the

bar.

This

setting

also

applies

when

nonstand-

ard

cartridges

are

used.

Make

sure

that

the

attitude

of

the

turntable

itself

is

horizontal

(Fig.

12).

HORIZONTAL

BALANCE

Set

the

anti-skating

device

knob

to

“0”.

Remove

the

stylus

cover.

Turn

the

main

counterweight,

obtaining

horizontal

balance

for

the

tonearm.

(That

is,

locate

the

main

counterweight

so

that

the

tonearm

remains

in

a

horizontal

attitude

with

respect

to

the

head

and

weight

ends.)

Now

turn

the

tracking

force

counter

ring

at

the

forward

end

the

main

counterweight,

matching

the

0-position

to

the

index

line

(black)

inscribed

on

the

tonearm.

Note

that

the

main

counterweight

must

be

held

at

this

time,

to

keep

it

from

turning

as

the

counter

ring

is

turned

(Fig.

13).

TRACKING

FORCE

Earlier

adjustment

set

stylus

pressure

to

zero.

At

this

time,

turn

the

main

counterweight

to

the

position

at

which

the

tracking

force

as

indicated

by

markings

on

the

counter

ring

is

that

desired.

(Turning

the

main

counterweight

carries

along

the

counter

ring.)

The

counter

ring

is

graduated

in

0.5g

increments

and

provides

4

grams

of

adjustment

per

turn

(Fig.

14).

ANTI-SKATING

FORCE

Turn

the

anti-skating

device

knob

to

the

position

which

matches

tracking

force

(Fig.

15).

Example:

If

tracking

force

is

1.8g,

set

this

knob

to

1.8.

What

is

“

Anti-skating’’?

As

the

record

groove

moves

in

relation

to

the

stylus

it

exerts

a

force

on

the

stylus

which

pushes

it

toward

the

center

shaft

of

the

record.

This

is

called

“‘skating

force”

and

will

actually

cause

the

stylus

to

jump

out

of

the

groove

and

“skate”’

if

it

is

too

strong.

Even

when

this

does

not

occur,

the

force

distorts

the

sound

response.

The

anti-skating

device

is

designed

to

cancel

this

force.

10

~

15mm

LATERAL

WEIGHT

Fig.

12

MAIN

COUNTERWEIGHT

TRACKING

FORCE

COUNTER

RING

Fig.

13

TRACKING

FORCE

COUNTER

RING

Fig.

14

ANTI-SKATING

DEVICE

KNOB

INDEX

LINE

|

|

Fig.

15

PIONEER

PARTS

IDENTIFICATION

DUST

COVER

°

RUBBER

MAT

TURNTABLE

PLATTER

STROBO

SCOPE

MAIN

COUNTERWEIGHT

ARM

REST

TONE

ARM

HEAD

SHELL

FUNCTION

LEVER

CENTER

SHAFT

SCREWDRIVE

OVERHANG

GAUGE

DUST

COVER

See

the

accompanying

illustration.

Align

the

dust

|

!

A

cover

(made

of

acryl)

to

turntable

hinges

and

shift

HINGES

it

to

the

side

to

lock

it

in

place

(Fig.

16).

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SNOILONNA

YISHL

GNV

SLYVd

CAUTIONS

ON

PLAYING

FOUR-CHANNEL

(CD-4)

RECORDS

TRACKING

FORCE

ADJUSTMENT

The

cartridge

employed

has

frequency

response

superior

to

that

of

an

ordinary

stereo

phono

cartridge,

in

order

to

provide

faithful

reproduction

of

the

indicated

CD-4

record

grooves.

Therefore,

the

permissible

range

of

tracking

force

is

quite

narrow.

Tracking

force

failling

outside

the

ac-

ceptable

range

will

cause

poor

sound

reproduction

quality.

Always

use

only

the

specified

tracking

force.

INSTALLATION

OF

CARTRIDGE

AND

HEAD

SHELL

The

cartridge

and

head

shell

must

be

installed

so

that

the

stylus

is

level

to

the

record

surface.

Check

this

point

carefully.

CLEANING

DISK

The

four-channel

(CD-4)

record

has

delicate

record

grooves,

Keeping

the

disk

clean

is

even

more

important

than

in

the

case

of

ordinary

stereo

records,

as

a

result.

Using

a

quality

cleaner,

carefully

clean

CD-4

records

before

and

after

use.

Do

not

use

spray

type

solvents

or

water

for

cleaning.

CLEANING

STYLUS

A

certain

amount

of

dirt

will

accumulate

at

the

stylus

tip

during

the

playing

operation.

This

ac-

cumulation

will

harden

if

it

is

left

in

place,

de-

teriorating

reproduced

sound

and

eventually

inter-

fering

with

reproduction

itself.

Clean

the

stylus

tip

each

time

you

use

the

turntable.

POINTS

TO

BE

CHECKED

HUM

Hum

is

often

caused

by

power

line

frequency,

either

from

poor

grounding

or

poor

connections

as

follows:

e

Turntable

ground

not

connected

to

amplifier

ground.

e

Turmtable

output

cable

in

close

proximity

to

amplifier

power

transformer.

e

It

may

be

possible

to

eliminate

hum

by

reversing

the

AC

cord

at

the

power

line

socket.

NOMENCLATURE

AND

USE

CAUTIONS

HORIZONTAL

ATTITUDE

Failure

to

position

the

turntable

in

a

horizontal

attitude

will

lead

to

a

number

of

problems.

Check

positioning.

ALWAYS

KEEP

STYLUS

CLEAN

Accumulation

of

dirt

particles

at

the

stylus

tip

deteriorates

the

quality

of

reproduced

sound.

Always

keep

stylus

tip

clean

with

a

soft

brush.

Always

keep

record

surfaces

clean

with

a

suitable

record

cleaner

before

each

play,

otherwise

delicate

stereo

sound

quality

will

be

deteriorated.

Never

touch

the

stylus

tip,

as

the

stylus

can

be

damaged.

VIBRATION

As

the

cartridge

used

has

a

light

tracking

force,

it

is

imperative

that

the

turntable

be

located

so

as

to

be

free

of

the

effects

of

vibration.

Keep

the

turntable

well

away

from

speaker

systems

and

other

sources

of

vibration.

INTERNAL

WORKINGS

The

PL-55DX

is

a

precision

device.

Refrain

from

removing

the

cover

and

turntable

from

“tamper-

ing”

with

internal

parts.

ACOUSTICAL

FEEDBACK

Feedback

occurs

when

speaker

vibration

is

sensed

by

the

pickup

cartridge.

Resulting

sound

takes

the

form

of

a

hum.

Raising

the

sound

level

causes

the

stylus

to

jump.

To

eliminate

this

problem,

separate

the

turntable

and

speakers

to

a

greater

extent.

10

COMPONENT

REPLACEMENT

STYLUS

The

standard

cartridge

PC-Q1

has

a

diamond

stylus

(PN-Q1).

Nominal

service

life

of

the

stylus

is

400

to

600

playing

hours.

Attempting

to

use

a

stylus

beyond

this

limit

will

result

in

record

damage

and

poor

sound

quality.

To

replace

the

stylus,

remove

the

head

shell

from

the

tonearm

and

carefully

extract

the

stylus

(at

an

angle

from

above)

(Figs.

17,

18).

Reverse

this

procedure

to

install

the

new

stylus.

Obtain

replacement

stylus

(PN-Q1)

from

any

Pioneer

sales

outlet.

Refrain

from

using

stylus

of

other

manufacturers.

In

the

event

that

other

styli

are

used.

Pioneer

cannot

assume

any

responsibility

for

problems

which

arise.

CARTRIDGE

Connector

terminals

conform

to

international

standards.

In

replacing

the

cartridge,

make

sure

that

head

leads

are

connected

to

proper

points

(Fig.

19).

Temporarily

secure

the

cartridge,

then

check

overhang,

and

finally

secure

the

cartridge

firmly.

Refer

to

the

accompanying

illustration

for

information

on

adjusting

overhang

(Fig.

20).

CARTRIDGE

WEIGHT

AND

SUBWEIGHT

If

a

heavy

cartridge

is

used,

weight

of

the

main

counterweight

may

not

be

sufficient

to

balance

the

tonearm.

In

this

case,

add

the

subweight

to

the

rear

end

of

the

main

counterweight

and

adjust

balance

(Fig.

21).

If

a

light

cartridge

is

used,

it

may

be

necessary

to

insert

the

weight

plate

between

the

head

shell

and

cartridge

in

order

to

balance

the

tonearm.

PIONGCER

Fig.

17

HOW

TO

REMOVE

THE

STYLUS

Fig.

18

SCREWS

WHITE

(+)

L

RED

(+)

R

WASHERS

BLUE

(-)L

GREEN(-)

R

Zia

Fig.

19

OVERHANG

GAUGE

Fig.

20

MAIN

COUNTERWEIGHT

Fig.

21

11