Pioneer PL-2 User manual

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Te,

Setvice

PALEY

ET

REPAIR

&

ADJUSTMENTS

ORDER

NO.

ART-713-0

STEREO

TURNTABLE

L-2_

PL-120

MODEL

PL-2

COMES

IN

SIX

VERSIONS

DISTINGUISHED

AS

FOLLOWS:

Voltage

Remarks

120V

only

U.S.A.

model

(Without

cartridge)

120V

only

Canada

model

(Without

cartridge)

—

WE

220V

—

240V

Europe

model

220V

—

240V

United

kingdom

model

220V

—

240V

Oceania

model

110V—120V/220V—240V

(Switchable)

General

export

model

MODEL

PL-120(which

is

minor

change

in

design

from

PL-2)

COMES

IN

FOUR

VERSIONS

DISTINGUISHED

AS

FOLLOWS:

220V

—

240V

Europe

mode!

220V

—

240V

United

kingdom

model

220V

—

240V

Oceania

model

110V—120V/220V—240V

(Switchable)

General

export

model

=

This

is

the

service

manual

for

model

PL-2/KUT.

For

servicing

of

the

other

types,

please

refer

to

the

additional

service

manual.

=

Ce

manuel

d‘instruction

se

refére

au

mode

de

réglage,

en

francais.

=

Estemanual

de

servicio

trata

del

método

de

ajuste

escrito

en

espanol.

PIONEER

ELECTRONIC

CORPORATION!

4-1.

Meguro

1-Chome,

Meguro-ku,

Tokyo

153,

Japan

U.S.

PIONEER

ELECTRONICS

CORPORATION

6&5

Oxford

Orive,

Moonachie,

New

Jersey

07074,

U.S.A.

PIONEER

ELECTRONIC

(EUROPE)

N.V.

Luithagen-Haven

9,

2030

Antwerp,

Belgium

PIONEER

ELECTRONICS

AUSTRALIA

PTY.

LTD.

178-184

Boundary

Road,

Braeside,

Victoria

3195,

Australia

FU

©

APR.

1981

Pint

sed

in

Japan

a

For

the

circuit

and

mechanism

descriptions,

please

refer

to

the

supplement

of

model

PL-7

service

manual

(ART-768).

CONTENTS

1,

SPECIFICATIONS

.2%.cex

weds

4

be

eee

wes

2

2.

FRONT

PANEL

FACILITIES..............

3

Gs:

DISASSEMBLY

se

ssnak

ing.

eS

soceare.

geet

et

ots

4

4.

TROUBLESHOOTING

..............0005.

6

5.

PRECAUTIONS

FOR

REASSEMBLY.........

8

6.

ELECTRICAL

PARTS

LIST..............

10

7.

P.C.

BOARD

CONNECTION

DIAGRAM......

11

1.

SPECIFICATIONS

Motor

and

Turntable

Drive

SystOm

6.446

Se

Pewee

Ee

we

Hw

SH

le

Belt-drive

WONG

siege

Bog

eae

Se

Ay

ee

8

Ok

Bok

See

ees

DC

motor

Turntable

Piatter

.......

310mm

diam.

aluminum

alloy

die-cast

DP

RCGS

x

8s

Cader

ab

A

ae

ey

le

be

ae

SE

eck

3d

33-1/3

and

45rpm

Wow

and

Flutter

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

Less

than

0.05%

(WRMS)

Signal-to-Noise

Ratio.

.........2...

More

than

68dB

(DIN-B)

(with

Pioneer

cartridge

model

PC-220)

Tonearm

MEY

cs

Sth

a

So

ct

tees

ae

3s

Static-balance

type,

Straight

pipe

arm

Effective

Arm

Length

............,.....004.

221mm

OVOCIVANG

e253

i

eh,

ed

ee

eee

ee

es

Ge

Ot

eo

es

15.5mm

Usable

Cartridge

Weight

......

.

3a

(min.)

to

8g

(max.)

Subfunctions

Auto-return

mechanism,

Anti-skating

force

contro!,

Stylus

pressure

direct-readout

counterweight,

Cueing

device,

Free

stop

hinges

8.

SCHEMATIC

DIAGRAM

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

12

9.

EXPLODED

VIEWS

....6.40

625

coi

bees

14

TO

APACKING:s.2.

22

5

dh

ace

a)

&

dard,

&

dee

oe

&

Oh

St

18

1d:

ADJUSTMENTS

£54

c

wea

sd

BES

aas

DAs

¥

19

REGULAGE

5k

caaacie

eee

oe

ecey

aet

22

PSUISTE

ieee

oa

ee

ko

ele

ee

als

23

Miscellaneous

Power

Requirements..................

AC120V,

6OHz

Power

Consumption

2

4.66

3066

Ge

ers

BA

ER

SL

ES

Su

3W

Dimensions

..............,

420(W)

X

108(H)

X

367(D)mm

16-1/2(W)

x

4-1/4(H)

X

14-7/16(D)in.

WV

SIE

cs

oes

sa,

Ses

ee

ee,

Bt ae eo

i

Ge

dee

he

Ge

5.1kg/11

tb

4

oz

Accessories

EP

AGapIer:

a.

2

a:

fos: whle

eh

ete

ea

OMe

eb

Oe

Oe

A

a

ik

1

Operating

Instructions...

......000...0.

20.0000

2

eee.

1

NOTE:

Specifications

and

design

subject

to

possible

modification

without

notice,

due

to

improvements.

2.

FRONT

PANEL

FACILITIES

fox

X

=

“~

X

S,

ee

\

co

a

\

Se

~

\

12)

a)

(j—

e/

(1)

SPEED

switch

|

Set

this

switch

in

accordance

with

the

speed

of

the

re-

cord

which

is

to

be

played.

[33]

(depressed

position):

For

33-1/3

rpm

records

[45]

(released

position):

For

45

rpm

records

(2)Cartridge

(3)

Headshell

(4)

Tonearm

(5)

ARM

ELEVATION

lever

Operate

this

lever

when

starting

record

play

or

when

temporarily

suspending

play.

(6)

ANTI-SKATE

control

This

is

rotated

when

performing

the

anti-skating

adjust-

ment.

6)

ae

S)

(4)

(3)

Q)

(7)

Arm

rest

This

serves

to

hold

and

clamp

the

tonearm.

When

moving

the

tonearm,

release

the

clamp.

Tracking

force

adjustment

weight

This

is

used

when

adjusting

the

tracking

force.

(9)

Platter

(0)

Platter

mounting

shaft

(1)

Rubber

mat

(2

EP

adapter

This

is

used

when

playing

records

without

a

‘‘middle.”

43)

Cabinet

(4)

Dust

cover

3.

DISASSEMBLY

3.1

PANEL

AND

BASE

In

removing

the

panel,

follow

the

below

listed

steps

in

the

order

given.

Using

any

unnecessary

force

will

result

in

bending

the

springs

or

damaging

other

parts.

Panel

removal

steps

1.

Remove

the

headshell

and

weight

assembly,

and

the

weight

shaft

assembly.

The

weight

shaft

assembly

is

removed

by

loosening

screw

(Hexagone

socket

screw)

and

the

headshell

by

loosening

screw

@.

2.

Lift

off

the

turntable

platter.

Turntable

platter

oe

;

Pane!

Motor

assembly;

CO

~1

OS

Dust

cov

Y

er

.

Loosen

insulator

attachment

screws

@

and

remove

the

insulator.

(Do

not

mix

the

color-

coded

float

springs.

They

must

be

replaced

with

their

original

insulators

during

reassemb-

ly.)

.

Remove

the

rear

panel

PU

cord

strain

relief.

.

Lift

the

front

section

of

the

panel

(operating

controls)

very

slightly

.

Unplug

the

2p

connector.

.

Completely

remove

the

PU

cord

fromthe

panel.

.

Taking

care

not

to

damage

the

tonearm,

remove

it

from

the

panel.

(Hold

the

tonearm

steady.)

Weight

assembly

®

Screw.

a

Rubber

bush

oa

Weight

shaft

assembly

we

Control

mechanism

Fig.

3-1

Disassembly

3.2

TONEARM

1.

Disconnect

the

tonearm

lead

wires

from

the

PU

board

(See

Fig.

3-2).

Note

that

some

of

the

lead

wires

have

been

soldered

to

the

PU

board,

and

must

be

discon-

nected

with

care.

2.

Loosen

the

set

screw

@

with

a

screwdriver

to

remove

the

PU

plate

under

the

arm

base

(See

Fig.

3-3).

3.

Undo

the

screw

@

securing

the

tonearm

to

the

arm

base

(See

Fig.

3-3).

3.3

TONEARM

SECTION

Remove

the

tonearm

section

by

taking

out

the

three

arm

base

attachment

screws

@

and

one

ground

wire

securing

screws

@.

3.4

CONTROL

MECHANISM

SECTION

After

the

tonearm

section

has

been

removed,

loosen

the

three

control

mechanism

attachment

screws

@

and

remove

the

assembly.

Tomearm

Screwdriver

3.5

PANEL

AND

BASE

REASSEMBLY

1.

Attach

the

PU

cord

stopper.

2.

Attach

the

insulators.

(Make

certain

the

color-

coded

float

springs

are

attached

to

the

correct

insulators.)

3.

Attach

the

weight

shaft

assembly.

Tonearm

lead

wires

PU

board

Red

Fig.

3-2

Disconnect

the

tonearm

lead

wires

_S-@

_

(Hexagone

socket

screw)

~

(2

PU

plate

Fig.

3-3

Remote

tonearm

4.

TROUBLESHOOTING

Use

the

following

directions

to

find

the

cause

of

each

type

of

breakdown.

Improper

adjustment

units

should

be

completely

readjusted.

#

AUTO-RETURN

DOES

NOT

WORK

Change

in

starting

position

adyjust-

ment.

Starting

plate

does

not

follow

the

N

signal

plate.

YES

YES

After

starting,

incomplete

reset

of

the

signal

plate.

(See

section

1)

YES

The

inner

areas

of

records

can

not

be

tracked.

YES

Looseness

in

the

PU

plate

attach-

ment.

Section

1

After

performing

the

return

operation,

if

the

curved

section

of

the

signal

plate

and

curved

sect-

ion

of

the

starting

plate

are

not

in

contact

with

surfaces

(A)

and

(B)

respectively

of

the

cam,

reset

will

be

incomplete

and

the

starting

position

will

be

late.

As

a

result,

the

return

function

may

not

operate

at

times.

In

this

case,

bend

the

signal

plate

C)so

that

dimension

A)

is

0.5mm

or

larger.

6

NO

Inner

diameter

of

the

starting

plate

hole

is

small.

2

Too

much

grease

between

the

signal

hole

is

small.

Protrusions

on

the

caulk

section

of

the

starting

plate

hole.

Not

enough

grease

between

the

starting

plate

and

signal

plate.

NO

The

curved

section

of

the

signal

plate

is

deformed.

PU

cord

is

touching

the

PU

plate.

Arm

lead

wire

is

caught

on

something.

Operator

of

the

detection

lever

is

not

smooth.

Signal

plate

Cam

Fig.

4-1

Incomplete

reset

of

starting

and

signal

plates.

#

RETURN

IS

FAST

(RETURN

AT

1mm

PITCH)

Protrusions

on

the

pinion

gear

section

(See

Section

2)

Section

2

If

there

are

rough

areas

of

plastic

protruding

from

the

‘A)

section

of

the

protruding

section

of

the

pinion

gear,

the

return

function

may

operate

at

a

pitch

of

only

1mm.

In

this

case,

remove

the

plastic

protrusions

completely

(Fig.

4-2).

Pinion

gear

protruding

section

Fig.

4-2

Elimination

of

pinion

gear

protrusions

#

MOTOR

DOES

NOT

ROTATE

2P

connector

is

not

attached.

Connector

is

not

properly

installed.

=»

MOTOR

DOES

NOT

STOP

The

switch

lever

and

switch

locker

are

not

locking

(See

section

3).

Section

3

In

order

to

turn

the

power

OFF,

the

PU

plate

shaft

touches

surface

(A)

of

the

switch

locker

pushing

it

over

so

it

locks

with

the

switch

lever

turning

the

microswitch

OFF

(Fig.

4-3).

If

the

amount

of

push

on

the

switch

locker

is

insuf-

A

ficient,

it

can

not

lock

with

the

switch

lever.

With

the

tonearm

locked

in

the

arm

rest,

as

shown

The

installation

location

of

the

PU

plate

is

incorrect.

PU

plate

Switch

locker

in

figure

4-4,

attach

the

PU

plate

precisely

mid-

Sitch

lever

way

between

the

first

and

second

points

from

the

arm

base

scale

mark

counting

away

from

you.

Fig.

4-3

Adjustment

of

switch

lot

er

Arm

base

scale

mark

Fig.

4-4

Adjustment

PU

plate

5.

PRECAUTIONS

FOR

REASSEMBLY

Follow

these

directions

and

precautions

when

reassembling

a

unit

after

completing

repairs.

Be

sure

to

lubricate

as

required,

make

no

mistakes

when

attaching

parts,

and

avoid

all

other

careless

mistakes

that

may

be

the

cause

of

trouble

later

on.

5.1

AREAS

THAT

REQUIRE

LUBRICATION

NOTE:

Types

of

lubricants

and

areas

where

they

are

used

are

listed

in

table

1.

Table

1

Areas

used

Type

of

Oil

raising

shaft

—_

all

other

areas

Silicon

Oi!

#100000

(GEM-002)

GYA-008

Lubrication

points

are

specified

for

oils

other

than

GYA-008.

Never

use

a

different

type

of

oil.

e

Cam

Section

Apply

oil

to

the

heart-shaped

grooved

section

(rear

side

of

the

cam)

and

lock

plate

sliding

section

in

order

to

minimize

wear

on

the

sliding

section

and

the

burden

on

the

mechanism.

e

Driving

Plate

Assembly

Decrease

the

burden

on

the

mechanism

and

the

wear

on

the

sliding

section.

Sides,

top,

and

bottom

surfaces

(sliding

section

of

auto-stop

mechanism)

Sides

surface

:

(sliding

section

of

auto-stop

mechanism)

EV

cam

side

surface

(sliding

section

of

elevation

cam)

Fig.

5-1

Driving

panel

assembly

section

©

Switch

Locker

Section

Apply

oil

to

the

switch

locker

(opening)

and

sub-panel

base

sliding

section

to

decrease

the

burden

on

the

mechanism.

When

applying

oil

to

the

opening

(shaft

hole),

do

not

apply

any

oil

2—3mm

from

the

bottom

surface.

If

oil

is

applied

2—3mm

within

the

bottom

surface,

it

may

come

out

the

bottom

and

gO

between

the

switch

lever

and

sub-panel

base

causing

the

switch

lever

to

operate

ineffectively.

Switch

locker

Fig.

5-2

Switch

locker

section

e

EV

Lever

Unit

Section

Apply

oil

to

the

sliding

section

of

leaf

spring

(A)

and

EV

lever

unit

to

decrease

the

burden

on

the

mechanism.

Leaf

spring

(A)

S</

sliding

section

a

aN

ie

EV

lever

unit

EV

lever

unit

sliding

section

Fig.

5-3

EV

lever

unit

section

e

Elevation

Cam

Section

Apply

oil

to

the

elevation

cam

and

sliding

sec-

tion

of

the

raising

shaft

to

decrease

the

burden

when

operated.

Elevation

cam

Fig.

5-4

Elevation

cam

section

e

EV

Sheet

Section

Apply

oil

to

the

raising

shaft

and

sliding

section

of

the

bearing

to

assure

stability

in

the

eJevation

lowering

speed.

Apply

all

around

at

a

width

of

1mm

Half

of

the

grooved

section

EV

sheet

assembly

Fig.

5-5

EV

sheet

section

5.2

PRECAUTIONS

FOR

ATTACHMENT

OF

PARTS

AND

REASSEMBLY

e

Motor

Attachment

When

installing

the

motor,

set

the

cam

in

the

mechanism

stop

location

and

verify

that

the

starting

plate

section

B

does

not

protrude

be-

yond

surface

A

of

the

cam.

If

the

motor

is

at-

tached

with

the

starting

plate

section

B

protrud-

ing,

the

starting

plate

may

be

deformed,

the

motor

pinion

gear

may

be

scratched,

and

the

return

function

may

be

damaged.

Signal

plate

Ss.

Starting

plate

OS

Fig.

5-6

Motor

attachment

e

PU

Plate

Attachment

Push

the

PU

plate

into

place

so

that

the

PU

plate

bearing

section

touches

the

revolution

shaft

attachment

nut.

Installation

direction

is

as

shown

in

figure

5-7.

Note

that

there

is

a

difference

be-

tween

auto-return

and

fully

automatic

models.

Arm

base

scale

mark

Fig.

5-7

PU

plate

attachment

e

AS

Knob

Attachment

When

installing

the

AS

knob,

put

the

AS

knob

rib

against

the

AS

knob

revolution

control

stopper

(attached

to

the

arm

base)

and

affix

with

the

screw.

As

the

stopper

may

break,

be

sure

to

press

the

AS

knob

down

firmly

when

installing

it.

Stopper

‘

Cae

Fig.

5-8

AS

knob

attachment

e

Arm

Base

Attachment

When

attaching

the

arm

base

section

to

the

mechanism

section,

put

the

mechanism

section

switch

locker

and

switch

lever

in

the

locked

posi-

tion

and

verify

that

the

tonearm

is

in

the

arm

rest

location.

Also

be

sure

to

put

the

manual

elevation

lever

in

the

up

position

and

check

that

the

PU

plate

shaft

is

in

the

position

shown

in

figure

5-9.

Switch

lever

—

switch

locker

Fig.

5-9

Arm

base

attachement

e

Wiring

the

Connector

When

attaching

the

wires

to

the

2P

connector

from

the

microswitch,

bend

the

lead

wires

from

the

connector

housing

as

shown

in

figure

5-10

before

attaching.

Lead

wires

|

Connector

housing

Fig.

5-10

Start

lever

unit

attachment

6.

ELECTRICAL

PARTS

LIST

NOTES:

e

Parts

without

part

number

cannot

be

supplied.

e

The

/\

mark

found

on

some

component

parts

indicates

the

importance

of

the

safety

factor

of

the

part.

Therefore,

when

replacing,

be

sure

to

use

parts

of

identical

designation.

e

For

your

Parts

Stock

Control,

the

fast

moving

items

are

indicated

with

the

marks

k**

and

*

.

*x%*

GENERALLY

MOVES

FASTER

THAN

*

This

classification

shall

be

adjusted

by

each

distributor

because

it

depends

on

model

number,

temperature,

humidity,

etc.

POWER

SUPPLY

ASSEMBLY

(PWR-062)

Mark

Part

No.

Symbol

&

Description

A\

PCL-040

C1

Capacitor

CEA

221M

25L

C2

*

PCX-010

D1

(WLO2)

A

&

PTT-123

Power

transformer

(120V)

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