Pioneer PL-560 User manual

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c/Manual

Service

motor

QuartzPLL

DIRECT

DRIVE

2

FULL

AUTOMATIC

TURNTABLE

PL=-560

Y

PIONEER

For

details

of

operation

of

the

mechanism

and

electronic

circuitry

of

the

PL-560,

refer

to

the

manuals

listed

below.

1.

Operation

of

mechanism

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

PL-520

2.

Operating

principle

of

phono-motor

.....

PL-630

MODEL

PL-560

COMES

IN

FIVE

VERSIONS

DISTINGUISHED

AS

FOLLOWS:

Voltage

Remarks

120V

only

Canada

model

(without

cartridge)

;

120V

only

U.S.A.

model

(without

cartridge)

220V

and

240V

(switchable)

Europe

or

Oceania

model

(without

cartridge)

110V,

120V,

220V

and

240V

(switchable)

General

export

model

(without

cartridge)

110V,

120V,

220V

and

240V

(switchable)

U.S.

Military

model

(within

cartridge)

@

This

service

manual

is

applicable

to

the

PL-560/KUT,

KCT.

For

servicing

of

the

other

types

La

please

refer

to

the

additional

service

manuals.

CONTENTS

To

SPECIFICATIONS:

4.4545

uae

aie

eee

teu

oe

3

2.

FRONT

PANEL

FACILITIES

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

4

BS:

PARTS.

LOCATION

§

x6

ih

beta

cous,

devadce

aac

6

4:

DISASSEMBLY

2:

dvd

parhtraceck

untae

eadee

6

|

5.

MECHANISM

ADJUSTMENT

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

8

|

6.

ELECTRIC

ADJUSTMENTS

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

10

7.

EXPLODED

VIEWS

TiV>

“AGADINO:

ahaiglac

Seay

ede

te

oe

ees

11

dia.

Bottom

Plate...

ace-tas.e

oe

8

ee

eee

se

8s

12

7.3.

Arm

Base

......

Bi

to

Ue

silcths

oh

deathecal

iB

te

Maat

13

7A.

Soulb

Parte).

4..0000.

2

vas

bese

Fe

Sas

15

So

PACKING:

<o-64

084.0040

Vee

see

es

we

tae

ea

16

9.

SCHEMATIC

DIAGRAM,

P.C.

BOARD

PATTERNS

AND

PARTS

LIST

9.1

Schematic

Diagram

..............205-

18

9.2

P.C.

Board

Connection

Diagram

........

20

9.3.

Drive

Control

Assembly

(PWG-017)

......

23

9.4

Control

Assembly

(PWX-028)

..........

24

9.5

Oscillator

Assembly

(PWX-022)

........

25

9.6

Power

Supply

Assembly

............-.

26

10.

D.D.

MOTOR

EXPLODED

VIEW

...........

27

1.

SPECIFICATIONS

Motor

and

Turntable

DEWE-

SV

SION

ag

th.

Lt

See

alee

aes

ie

Direct-drive

MOO

0

&

a.

Rae

aGala

etter

me

Quartz

PLL

Hall

motor

Turntable

Platter.

.

.

320mm

diam.

aluminum

alloy

die-cast

Moment

of

Inertia...

..

280kg-cm?

(including

platter

mat)

SHECUS

a5.

ge

ee

ewes

Poe

Oe

33-1/3

and

45rpm

Speed

Control

Range.....................2.

-£6%

Wow

and

Flutter...........

Less

than

0.025%

(WRMS)

Signal-to-Noise

Ratio.

........

More

than

73dB

(DIN-B)

(with

Pioneer

cartridge

model

PC-400)

Rotational

Characteristics

Build-up

Time

......

Within

120°

rotation

at

33-1/3rpm

Speed

Deviation

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

Less

than

0.002%

Speed

vs.

Load

Characteristics...

.

Stable

up

to

200

grams

drag

load

Speed

Drift

.......

Less

than

0.00008%/h

at

33-1/3

rpm

Less

than

0.00003%/

degree

temp.

change

at

33-1/3rpm

Tonearm

Type........00%

Static-balance

type,

S-shaped

pipe

arm

Pffective

Atm

Length

ics

wy

aed Gis

oo

eke

s

221mm

Over

han

sy

ooo

aioe

SAA

lola

bp

oat

ed

15.5mm

Usable

Cartridge

Weight.......

4g

(min.)

to

10g

(max.)

Subfunctions

Full

auto

mechanism

Anti-skating

force

control

Stylus

pressure

direct-readout

counter

weight

PL-560

Cueing

device

Strobe

light

Pitch

indicator

Free

stop

hinges

Semiconductors

Ne

ein

a.

ig

Se

oe.

4

aS

es

wa

Renita

eee

wae

4

UP

AMSISUONS

a

deed

a:

See

aokegote

gk

gigas

Sc

e892 dete

ge

oa

teas

-

DI

OUCS

3

oo.

Fb

te

aor

ay

Klein

eee

Seek

ee

5

Fiat

ClCINGO

bse

gins

3S

ot

avert:

Glencwin

Ei:

em

yee

Oe

3

Accessories

EON

AD

LOR

a8

geet?

et

Are

cant

Wer

we

eodca

kn

Sah

obey

we

sad

4

1

DCECW

UMINEY

4.

20e

cat

tay

casts

Seki

Se

Hechinger

eg

oe

Bek

1

Cartridge

mounting

screws

...........0000

0000s

6

Cartridge

mounting

NUTS.

as

a4.6)s

c0ewawe

Ye

Ge

LER

Y

A

Z

Cartridge

mounting

washers

..............-00006

2

Operating

1NStructions

4.04

ys

oh

es

BE

Bo

SS

]

Miscellaneous

Power

Requirements

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

AC

120V,

60Hz

Power

CONSUMDIION:

503.4

9a

4

64

Sete

ewe

BA

12W

Dimensions

...........

440(W)

x

145(H)

x

365(D)mm

17-15/16(W)

x

5-11/16(H)

x

14-3/8(D)

in.

WING.

sutatat

c

Sipty

aap

guste

ade ret

As

10.5kg/23lb

2

oz

NOTE:

Specifications

and

design

subject

to

possible

modification

without

notice,

due

to

improvements.

2.

FRONT

PANEL

FACILITIES

@

CUT

BUTTON

Push

this

button

to

stop

the

record

play.

When

pushed,

the

tonearm

will

rise

and

return

to

the

arm

rest.

The

power

to

the

turntable

will

then

be

switched

off

and

a

few

seconds

later,

the

platter

will

stop

rotating.

NOTE:

If

the

REPEAT

button

is

pushed,

the

tonearm

will

return

to

the

arm

rest

and

then

move

across

again

to

the

record.

(@

REPEAT

BUTTON

Push

this

button

when

you

want

to

listen

to

the

same

record

again.

Press

the

button

once

more

to

release.

NOTE:

All

you

have

to

do

for

repeat

play

is

to

press

the

REPEAT

button.

There

is

no

need

to

push

the

START

button

again.

@)

START

BUTTON

The

power

to

the

turntable

is

turned

on

and

the

platter

starts

to

rotate

when

this

button

is

depressed.

@

SPEED

SELECT

SWITCH

45

....

When

this

switch

is

depressed,

the

platter

will

rotate

at

45rpm.

Depress

for

playing

45rpm

records,

singles

or

EP’s.

33

....

When

this

switch

is

set

to

the

released

position,

the

platter

will

rotate

at

33-1/3rpm.

Release

for

playing

33-1/3rpm

records

like

LP’s.

(6)

QUARTZ

LOCK

SWITCH/PITCH

CONTROL

KNOB

@

When

the

Quartz

LOCK

switch

is

pushed

downward,

the

Quartz

PLL

will

actuate

and

the

strobe

light

comes

on.

Normally

use

it

in

this

position.

The

turntable

will

rotate

at

the

precisely

rated

speed

according

to

the

SPEED

SELECT

switch.

@

When

the

Quartz

LOCK

switch

is

pulled

upward,

the

Quartz

PLL

will

be

released

and

the

strobe

light

goes

off

and

pitch

meter

lamp

will

light

up.

If

the

PITCH

CONTROL

knob

is

turned

at

this

position,

the

rotating

speed

of

the

turntable

will

be

adjusted

up

to

6%

faster

or

slower

than

its

rated

speed.

If

the

knob

is

turned

in

the

(+)

direction,

the

turntable

rotates

faster,

and

if

the

knob

is

turned

in

the

(—)

direction,

the

turntable

rotates

slower

than

its

rated

speed.

The

variation

of

the

rotating

speed

can

be

read

out

on

the

PITCH

METER.

(Refer

to

“PITCH

CONTROL”)

Dust

ee

\

\ies

Rubber

platter

mat

Platter

PITCH

CONTROL

In

normal

circumstances,

the

platter

rotates

at

the

rated

speed

when

the

Quartz

LOCK

switch

is

kept

at

ON.

If

you

want

to

vary

the

speed,

set

this

switch

to

OFF

and

turn

the

PITCH

CONTROL

knob.

If

the

platter

rotates

faster

than

its

rated

speed,

the

musical

intervals

of

the

reproduced

sound

will

be

come

higher,

and

if it

rotates

slower,

they

will

become

lower.

Nowadays,

there

are

slight

variations

in

the

orchestra

and

other

tuning

sounds

recorded

on

discs.

Further-

more,

pianos

and

other

musical

instruments

for

the

home

are

tuned

to

high

international

standards

and

so

there

are

slight

discrepancies

in

the

musical

intervals

when

practicing

on

the

piano

along

with

a

record.

This

turntable

features

a

pitch

control

which

allows

you

to

compensate

for

the

slight

variations

in

the

musical

intervals

by

making

the

platter

rotate

up

to

6%

faster

or

slower

than

its

rated

speed.

The

com-

pensation

can

be

checked

by

ear.

An

adjustment

of

+6%

is

equivalent

to

about

a

semitone.

|

PL-560

|

RECORD

SIZE

SELECTOR

This

selector

selects

the

size

of

the

record

for

automatic

play

and

also

selects

manual

play.

\

Fonesin

17.

7”

....

For

the

automatic

play

of

17cm

(7-inch)

LP

and

EP

records.

=

ANTI-SKATE

knob

25

NOs

aoe

For

the

automatic

play

of

25cm

(10-inch)

Arm

elevater

LP

records.

geil

BOT

2

ee

eis

For

the

automatic

play

of

30cm

(12-inch)

WY

LP

records.

MANUAL

...

For

the

manual

play

of

records.

NOTE:

The

tonearm

will

not

be

actuated

when

the

RECORD

SIZE

selector

is

at

the

MANUAL

position

for

play,

even

if

the

START

button

and

the

REPEAT

button

are

pushed.

ARM

ELEVATION

LEVER

This

lever

controls

the

ascent

and

descent

of

the

tonearm.

BIUP)

ices

The

tonearm

rises.

Y(DOWN)

...

The

tonearm

descends

gently.

Set

to

this

position

for

auto

play,

auto

repeat

and

other

automatic

operations.

NOTE:

When

the

ARM

ELEVATION

lever

is

set

to

the

UP

position

for

automatic

play,

the

tonearm

will

move

over

as

far

as

the

lead-in

groove

on

the

record

but

it

will

not

descend

and

the

record

will

therefore

not

be

played.

PITCH

METER

ARM

REST

When

the

Quartz

LOCK

switch

is

set

to

OFF,

the

pitch

The

arm

rest

supports

the

tonearm

when

it

is

not

being

meter

lamp

will

light

up,

and

the

variation

in

the

rota-

used.

Set

the

tonearm

on

its

rest

when

it is

not

playing

tional

speed

of

the

platter

in

respect

to

its

rating

(33-1/3

records.

Clamp

it

into

position

if

you

don’t

have

any

or

45rpm)

can

be

read

out

on

the

meter.

immediate

plans

to

play

records

(see

Figure).

hy

Releasing

the

arm

Securing

the

arm

clamp

clamp

STROBE

LIGHT

When

the

Quartz

LOCK

is

set

to

ON,

this

light

comes

on

and

lights

stroboscopically.

Then,

the

turntable

rotates

at

its

rated

speed

and

so

the

strobe

dots

remain

stationary.

3.

PARTS

LOCATION

Plate-L

Plate-R

PNW-338

PNW-339

Main

weight

assembly

PXA-708

Power

transformer

PTT-053

(KUT)

Tonearm

assembly

PTT-054

(KCT)

PPD-577

Meter

assembly

PAW-003

Knob

PAA-035

Cabinet

Push

button

knob

~PMM-159

PAD-039

Power

supply

assembly

PWR-044

(KUT)

PWR-045

(KCT)

Headshell

assembly

PXA-693

Oscillator

assembly

PWX-022

4.

DISASSEMBLY

®

Tone

arm

Remove

the

arm

base

from

the

cabinet

while

refer-ring

to

the

disassembly

drawing

on

Page

11.

1.

Unsolder

the

leads

coming

out

from

the

tone

arm.

2.

Remove

the

P.U.

plate

by

loosening

the

two

mounting

screws.

3.

Loosen

the

tone

arm

fixing

screws

using

a

hexagonal

wrench,

and

then

remove

the

tone

arm.

PL-560

@

Foot

spring

Remove

the

spring

stopper

using

a

screwdriver,

as

shown

in

the

diagram.

Fig.

B

®

Timing

motor

.

Remove

the

sub-panel.

.

Remove

the

cam

from

the

shaft

of

the

gear

motor.

3.

Using

cutting

pliers,

cut

off

the

aluminium

rivets

securing

the

gear

motor.

4.

When

reinstalling

the

gear

motor,

use

two

N3

nuts

and

PSA8x8

screw

in

place

of

the

rivets

cut

off

in

3.

above.

Ne

Fig.

C

Fig.

E

5.

MECHANISM

ADJUSTMENT

Prior

to

making

any

adjustments,

check

that

the

PU

plate

shaft

is

located

in

the

center

of

the

cut

out

section

of

the

sub

panel

(as

shown

in

Fig.

1

below).

Cut

out

section

of

=

sub

panel

PU

plate

shaft

Fig.

1

Tonearm

Descent

Positions

The

tonearm

descent

positions

may

be

adjusted

by

turning

the

adjustment

screws

located

in

the

panel

holes

at

the

base

of

the

tonearm

pivot

(see

Fig.

2

).

When

turned

clockwise

..

the

descent

position

is

center.

When

turned

counter

clockwise

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

the

descent

position

is

moved

outwards.

This

is

quite

a

simple

operation

when

a

test

record

is

used.

For

80cm

records

......

tonearm

descent

should

occur

in

the

304

to

319

count

range.

For

25cm

records

......

tonearm

descent

should

occur

in

the

252

to

267

count

range.

For

17cm

records

......

tonearm

descent

should

occur

in

the

173

to

184

count

range.

ey,

Tonearm

descent

position

~

adjustment

screws

The

tonearm

must

be

returned

to

the

arm

rest

to

provide

access

to

these

screws.

Fig.

2-a

Turn

adjustment

screw

in

the

counter

clockwise

direction

Turn

adjustment

screw

in

the

clockwise

direction

OD

D

Ss

oo

ed

AAA

Descent

position

too

far

inside

Descent

position

too

far

outside

Fig.

2-b

When

Tonearm

Fails

to

Return

1.

Adjust

the

stopper

angle

so

that

it

makes

contact

with

the

return

lever

pin

(Fig.

3).

Return

lever

Stopper

angle

Fig.

3

Arm

Elevation

Adjustment

1.

Leave

the

tonearm

in

the

up

position,

and

adjust

the

height

of

the

arm

elevation

sheet

so

that

the

gap

between

stylus

tip

and

record

surface

is

about

10mm.

(Fig.

4).

Arm

elevation

sheet

Fig.

4

Auto

Return

Lift

Off

Position

First

check

that

the

turntable

pin

(attached

to

the

turntable)

has

not

been

bent

over.

Strighten

out

if

necessary.

1.

Tonearm

lifts

off

too

soon.

Unscrew

the

screw

in

the

tip

of

the

PU

plate

by

a

suitable

amount

(Fig.

5).

2.

Tonearm

too

slow

in

lifting

off

Screw

the

PU

plate

tip

screw

in

further

(Fig.

5).

Screw

in

tip

of

PU

plate

Sending

plate

Screw

driver

Fig.

5

Faulty

Tonearm

Movement

If

the

tonearm

is

interfered

with,

or

halted

altogether

during

the

lead

in

operation,

tighten

up

the

screw

shown

in

Fig.

6.

NOTE:

This

adjustment

screw

should

be

made

neither

too

tight

nor

too

loose.

Q

eee

Bracket

=

<—

Nut

Plate

spring

Operations

plate

Fig.

6

Shorting

Switch

Adjust

the

switch

mounting

screw

so

that

the

gap

between

contacts

during

play

is

0.5mm

(Fig.

7).

Screw

dirver

Spring

mounting

screw

(for

adjustment)

—-

Fig.

7

PL-560

6.

ELECTRIC

ADJUSTMENTS

6.1

SPEED

ADJUSTMENT

WHEN

QUARTZ

LOCK

IS

OFF

1.

Put

the

quartz

lock

off.

2.

Turn

the

ADJUST

knob

on

the

control

panel

to

the

mechanical

center

position.

3.

Insert

a

screwdriver

through

the

small

hole

in

the

baseplate

of

the

player,

and

turn

the

semi-

fixed

speed

adjustment

potentiometer

VR:

until

the

strobe

pattern

on

the

turntable

becomes

stationary.

6.2

ADJUSTMENT

OF

D.D.

MOTOR

OPERATING

POINT

@

Adjustment

Conditions

Connect

the

SP

and

TP23

terminals

of

PWG-017

to

each

input

of

a

double

image

oscilloscope

(synchroscope).

Put

the

turntable

in

the

Quartz

Lock

ON

condition,

and

then

start

it

up.

®

Method

of

Adjustment

1.

Observe

the

output

waveforms

from

SP

and

TP23

(Fig.

8).

(Two

output

pulses

from

terminal

TP23

will

correspond

with

one

pulse

from

terminal

SP.

2.

Adjust

the

semi-fixed

resistor

in

the

control

circuit

assembly

(PWG-017)

so

that

the

rising

part

of

the

pulse

which

comes

out

of

terminal

TP23

fits

into

the

middle

of

the

pulse

which

is

generated

at

terminal

SP.

For

33-1/3

rpm,

adjust

VR21.

For

45

rpm

adjust

VR22.

Waveform

at

TP23

terminal

Waveform

at

SP

terminal

Fig.

8

10

6.3

METER

ADJUSTMENT

ds

Adjustment

Conditions

Connect

a

frequency

counter

between

the

TP1

and

Gnd

terminals

of

the

oscillator

assembly

(PWX-022).

.

Turn

the

speed

adjust

knob

to

its

mechanical

center.

3.

Put

the

Quartz

Lock

off.

.

Adjust

VR3

Adjustment

.

Put

the

speed

selector

button

in

the

‘45”

position.

.

Turn

VR

in

the

oscillator

assembly

(PWX-022)

until

the

reading

on

the

frequency

counter

becomes

750.0Hz.

.

Turn

VRz2

in

the

control

assembly

(PWX-028)

until

the

meter

reading

becomes

zero.

.

Put

the

speed

selector

button

in

the

“33”

position,

and

turn

VR:

until

the

meter

reading

becomes

zero.

.

Turn

the

speed

adjust

knob

until

the

reading

on

the

frequency

counter

becomes

795Hz

(750Hz

+6%).

so

that

the

meter

indication

becomes

+6%.