Pioneer PL-100 User manual

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Servicec

Manual

STEREO

TURNTABLE

L-1I00

L-IOOX

Y

PIONEER

MODEL

PL-100

COMES

IN

SEVEN

VERSIONS

DISTINGUISHED

AS

FOLLOWS:

ee

Pe

ce

oo

AC

220V

—

240V

United

kingdom

model

(with

cartridge)

AC

220V

—

240V

Oceania

model

(with

cartridge)

AC

110-120/220-240V

(switchable)

General

export

model

(with

cartridge)

©

This

service

manual

is

applicable

to

the

PL-100/WE,

WB,

WP,

PL-100X/WE,

WB.

For

servicing

of

the

other

types,

please

refer

to

the

additional

service

manual.

CONTENTS

:.

“SPECIFICATIONS:

.4.c5:05.06

ee

aes

aoe

ea

3

8.

EXPLODED

VIEWS

2:-

‘PANEL

FACILIMNES®

cia

cies

ee

oe

eee

a

ot

3

BS.

sEXtevor

44

2

o8

bs

Ge

ee

cea

eae

ss

12

3.

DISASSEMBLY

Si2.

“SUuD-DdaNel

2.4%

o.bacbh

SG

Ses

ey

oe

eo

15

3.1

Panel

and

Base

Plate

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

4

9.

SCHEMATIC

DIAGRAM,

P.C.

BOARDS

3.2.

Arm

Base

and

Sub-Panel..............

5

a

DISS

RANE

Apacer

4.

MECHANISM

DESCRIPTION

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

6

Gt.

TPAC

MASE,

ce

oso

oS

hil

ae

oa

esac

ae

ew

16

5.

ADJUSTMENT

9.2

Schematic

Diagram

............+4-:

17

5.1

Auto-return

Adjustment

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

8

9.3.

P.C.

Boards

Connection

Diagram

.......

18

5.2

F.G.

Motor

Adjustment

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

8

10;

"PACKING

5

iat

eae

te

hcetacte

teats

19

5.3.

Arm-elevation

Adjustment

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

8

6.

TROUBLE

SHOOTING

6.1

Auto-return

Does

not

Work

...........

9

6.2

Return

is

Fast

(Return

at

1mm

Pitch).....

10

7.

PRECAUTIONS

FOR

REASSEMBLY

7.1.

Areas

That

Require

Lubrication

.......

10

7.2.

Precautions

for

Attachment

of

Parts

and

Reassembly

..........-20.0e00085

11

1.

SPECIFICATIONS

Motor

and

Turntable

Drive

SYStOM)

«26-2

con

8S

eae

Pe

eS

Ge

Sk

Pa

ee

es

Belt-drive

IEQNON

5

oe)

Sos

Sk

he

wal

oe

Se

ws

ie

Og

Wak

a

aes

FG

servo

motor

Turntable

Platter

.....2..

310mm

diam.

aluminum

alloy

die-cast

BOGGS

oso

he

ee

we

Oe

&

Be

Se

Bae

Oat

eS

33-1/3

and

45rpm

Speed

Control

Range..............00

202

ee

eevee

+2%

Wowand

Flutter

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

Less

than

0.045%

(WRMS)

Signai-to-Noise

Ratio.

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

More

than

70dB

(DIN-B)

(with

Pioneer

cartridge

model

PC-135)

Tonearm

MV

DG

<5

.t5,

(eee

RO

SRS

ee

Static-balance

type,

S-shaped

pipe

arm

Effective

Arm

Length

..........

Re

Nig

cet

ag.

te

aa

ah

os

wy

Rapa

221mm

OVGEINANIO:

.-

&

oa

See

oe

ee

5.

Se

be

ee,

BAS

Bea

S

hee

15.5mm

Usable Cartridge

Weight

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

4g

(min.}

to

9g

(max.)

Subfunctions

Auto-return

mechanism,

Anti-skating

force

control,

Stylus

pressure

direct-readout

counterweight,

Cueing

device,

Strobe

light

,Free

stop

hinges

Semiconductors

Platter/Rubber

platter

mat

Speed

checking

window

a)

SPEED

SELECTOR

BUTTON

45

....

When

this

button

is

depressed,

the

platter

will

rotate

at

45rpm.

Depress

for

playing

45rpm

records,

singles

or

EP’s.

33

....

When

this

button

is

set

to

the

released

position,

the

platter

will

rotate

at

33-1/3rpm.

Release

for

playing

33-1/3rpm

records

like

LP’s.

(2)

SPEED

ADJUSTMENT

KNOB

Turn

this

knob

when

finely

adjusting

the

speed

of

the

platter.

The

speed

of

platter

will

increase

when

the

knob

is

turned

to

the

left

in

the

direction

of

“+:

it

will

de-

crease

when

turned

to

the

right

in

the

direction

of

*—”,

PL-100

Miscellaneous

Power

Requirements:

WE,WB,WP

models

.........

AC

220—240V

~,

50,

60Hz

Power

Consumption

............0...002..0

00-544

4WwW

Dimensions

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

420(W)

x

96(H)

x

365(D)

mm

16-1/2(W)

x

3-13/16(H)

x

14-3/8(D)

in.

WeIQNE

-6

oo

oie

So

SRR

Se

Re

SE

...

5.2kg/11

Ib

80z

PC-110/I!

Specifications

WV

OO

SS

-n

och

ee

ke

a

eS

Ri

a

ae

a

Moving

magnet

type

SEVIS:

05

ods

ta8:

hs

Bees

ech

etc

at

ad

0.5

mil

diamond

(PN-110/I!)

Output

Voltage.....

3.5mV

(1kHz,

50mm/s

Peak

velocity,

LAT)

Tracking

Force

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

1.59

to

2.59

(proper

2.2g)

Frequency

Response

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

15

to

25,

OO0Hz

Recommended

Load...............

50k2

+170

~

300pF

Accessories

EP

AGsptet

6

osc.

6

tg

tng

fh

kk

&

Oho

el

ee

ae

Peeks

1

Operating

Instructions

(French

and

German

furnished

on

model

forWE)

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

1

NOTE:

Specifications

and

design

subject

to

possible

modification

without

notice,

due

to

improvements.

Anti-skate

knob

3)

ARM-ELEVATION

LEVER

UP(¥):

When

this

fever

is

set

to

this

potion,

the

tonearm

will

rise.

Set

it

to

UP

before

record

play

and

when

you

want

to

stop

ncord

play

while

a

track

is

being

played

or

ashen

you

want

to

change

over

to

a

different

track.

DOWN

(¥):

When

the

lever

is

set

to

this

pojtion

the

tonearm

will

be

lowered.

If

itis

set

to

DOWN

for

record

play,

the

tonearm

will

be

lowered

onto

the

surface

of

the

record,

and

play

will

begin.

3.

DISASSEMBLY

3.1

PANEL

AND

BASE

PLATE

1.

Undo

the

4

screws

@

securing

the

insulator

case.

2.Move

the

tonearm

across

to

the

center,

and

raise

the

panel

a

little.

3.

Disconnect

the

circuit

board

connector

(2-Pin).

Base

plate

Float

spring

(GRE)

Float

spring

_§

Insulator

case

_&

“

(VLT)

°

&

0

Float

spring

Damper

rubber

!

I

Float

spring

(BLK)

S-

(VLT)

:

~

0

Fig.

3-1

Remove

the

panel

and

base

plate

EME

HR

EEA

REE,

3.2

ARM

BASE

AND

SUB-PANEL

1.

Undo

the

5

screws

@

securing

the

arm

base.

2.

Undo

the

2

screws

@

securing

the

sub-panel.

3.

Undo

the

3

screws

©

securing

the

center

shaft.

Arm

base

Tonearm

assy

Base

plate

Fig.

3-2

Remove

the

arm

base

and

sub-panel

PL-100

4.

MECHANISM

DESCRIPTION

PL-100

MECHANISM

OPERATING

The

PL-100

is

equipped

with

auto-return

only.

Fig.

4-1

shows

the

PL-100

in

the

stationary

state

with

the

tonearm

back

in

the

arm

rest.

Gear

A

Ae

es

a

>

UR

TAR

Gre

cs

¢3

=

&,

e

Fig.

4-1

Mechanical

parts

name

*

Start

of

Play

Lever

A

1.

When

the

tonearm

is

moved

across

to

the

disc,

the

PU

plate

located

below

in

the

arm

base

is

also

moved.

2.

Lever

A

is

moved

over

by

pin

A

connected

to

this

PU

plate,

resulting

in

lever

B

being

un-

locked

(Fig.

4-3).

3.

At

the

same

time

that

lever

B

is

unlocked,

the

microswitch

is

turned

on

(power

on),

and

the

motor

commences

to

rotate

(Fig. 4-3).

Pin

A

Microswitch

Fig.

4-3

Start

of

play

*

AUTO-RETURN

DETECTION

1.When

the

stylus

nears

the

center

shaft,

pin

B

contacts

plate

A

(Fig. 4-4).

2.

Plate

A

pushes

plate

C

by

an

amount

directly

proportional

to

the

amount

of

movement

of

ee,

He

the

tonearm

(Fig.

4-5).

Figen

erent

3.Plate

D

atop

plate

C

is

moved

toward

gear

B

by

the

movement

of

plate

C.

pant

Ricithe

ARERR,

Fig.

4-5

Auto-return

detection

2

Gear

B

Plate

D

Dav.

W/

Ce

»

CE

Fig.

4-6

Auto-return

detection

3

Gear

B

feces

q|

Gear

A

Yi.

>.

Plate

D

ya

/

Del

SA

Fig.

4-7

Auto-return

detection

4

PL-100

4.The

front

end

of

plate

D

moves

approximately

O.lmm

when

the

stylus

is

advanced

1mm

toward

the

center

shaft

by

one

revolution

of

the

record.

5.The

tooth

of

gear

B

has

the

dimensional

dif-

ference

shown

in

Fig.

4-6.

6.Plate

D

is

pushed

back

by

this

dimensional

difference

at

a

stylus

movement

of

within

1mm

per

revolution

of

the

record.

7.When

the

stylus

enters

the

lead-out

groove

in

the

record

at

the

end

of

the

performance,

it

is

moved

4mm

toward

the

center

shaft

by

one

revolution

of

the

record.

8.The

end

of

plate

D

contacts

the

protruding

section

of

gear

B

(Fig.

4-7).

9.

Gear

B

and

gear

A

are

engaged,

and

gear

A

is

turned

by

rotation

of

the

turntable.

*

AUTO-RETURN

1.

Gear

A

and

B

are

engaged

each

other

by

the

auto-return

detector

and

gear

A

consequently

is

turned

in

the

counter-clockwise

direction.

2.

Plate

B

is

then

shifted

across

towards

the

tone-

arm

due

to

the

groove

in

the

underneath

of

gear

A.

3.The

edge

of

plate

B

pushes

against

lever

C

to

force

the

arm

elevation

upwards.

4.

Plate

B

continues

to

shift

across

to

push-

against

pin

B

on

the

PU

plate,

thereby

returning

the

tonearm

back

to

the

arm

rest.

o.

At

this

stage

plate

B

commences

to

return

to-

ward

the

center

shaft

guided

by

the

groove

in

gear

A.

Gear

B

Gear

A

ig

eet

RRR

Fig.

4-8

Auto-return

1

6.

When

the

edge

of

plate

B

separates

frorm

lever

C,

the

arm

elevation

is

lowered

to

drop

the

tonearm

back

into

the

arm

rest.

7.And

at

the

same

time

that

the

tonearm

is

returned

to

the

arm

rest,

pin

A

returns

Jever

A

back

to

the

stationary

state.

8.Plate

B

continues

to

move

toward

the

center

shaft

and

pushes

against

pin

C

on

lever

B.

Lever

B

thus

switches

the

microswitch

off

(power

off),

and

is

then

locked

by

lever

A,

thereby

bringing

a

complete

operation

cycle

to

an

end.

5.

ADJUSTMENT

9.1

AUTO-RETURN

ADJUSTMENT

1.Turn

the

auto

return

adjustment

screw

full

around

clockwise.

2.

Move

the

tonearm

right

across

toward

the

center.

3.When

the

auto

return

adjustment

screw

is

turned

back

a

little

at

a

time

counter

clockwise,

the

tonearm

will

commence

to

return

to

the

outer

circumference.

4.Stop

turning

the

adjustment

screw

once

the

stylus

tip

is

383mm

away

from

the

center

shaft.

5.

Once

the

above

adjustment

procedure

has

been

completed

check

that

the

tonearm

returns

auto-

matically

as

designed.

5.2

F.G.

MOTOR

ADJUSTMENT

1.

Turn

the

power

on

and

start

the

turntable

plat-

ter

rotating.

2.

Turn

the

speed

adjustment

knob

around

to

the

mechanically

center

position.

3.

Adjust

VR2

and

VR83

in

the

motor

assembly

so

that

the

stroboscope

appears

to

be

stationary.

Again

this

adjustment

is

performed

from

below.

4.

Adjust

VR2

for

33rpm

speed,

and

VR3

for

45rpm.

|

5.3

ARM-ELEVATION

ADJUSTMENT

To

proceed

with

the

elevation

sheet

height

adjustment,

insert

the

hexagonal

wrench

(for

3

mm)

into

the

hole

at

the

front

of

the

EV

sheet

and

rotate

it

clockwise

to

reduce

the

height

and

coun-

ter-clockwise

to

increase

the

height.

The

height

of

the

stylus

tip

from

the

record

surface

is

7

+2

mm.

Fig.

4-9

Auto-return

detection

2

_

river

3

wy

Fig.

5-2

Motor

adjustment

Elevation

sheet

Fig.

5-3

Arm-elevation

adjustment

PL-100

6.

TROUBLE

SHOOTING

Use

the

following

directions

to

find

the

cause

of

each

type

of

breakdown.

Improperly

adjusted

units

should

be

completely

readjusted.

6-1

AUTO-RETURN

DOES

NOT

WORK

START

Change

in

starting

position

adjust-

ment.

Plate

D

does

not

follow

the

plate

C

After

starting,

incomplete

reset

of

the

plate

C.

See

@

Too

much

grease

between

the

plate

C

and

the

gear

A.

The

curved

section

of

the

plate

C

is

deformed.

Inner

diameter

of

the

plate

D

bear-

ing

is

small.

The

inner

areas

of

records

can

not

be

tracked.

Protrusions

on

the

caulk

section

of

the

plate

D

bearing.

Arm

lead

wire

is

caught

on

some-

thing.

Not

enough

grease

between

the

plate

D

and

plate

C.

PU

cord

is

touching

the

PU

plate.

Looseness

in

the

PU

plate

attach-

ment.

PU

plate

is

touching

the

leaf

spring

(plate

D)

Operation

of

the

plate

A

is

not

smooth.

Procedure

for

Dealing

with

item

@

After

performing

the

return

operation,

if

the

curved

section

of

the

plate

C

and

curved

section

of

the

plate

D

are

not

in

contact

with

surfaces

and

(B)

respectively

of

the

cam,

reset

will

be

|

select

incomplete

and

the

starting

position

will

be

late.

Gear

A

0.5mm

As

a

result,

the

return

function

may

not

operate

at

times.

In

this

case,

bend

the

plate

C

C)

so

that

Fig.

1-6

Incomplete

plate

D

and

plate

C.

dimension

A

is

0.5mm

or

larger.

6.2

RETURN

IS

FAST

(RETURN

AT

1mm

PITCH)

Protrusions

on

the

pinion

gear

sec-

tion.

See

@

Procedure

for

Dealing

with

Item

@

If

there

are

rough

areas

of

plastic

protruding

from

the

@)

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.

6-2).

Gear

B

(pinion

gear)

protruding

section

Fig.

6-2

Elimination

of

pinion

gear

protrusions.

7.

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.

7.1

AREAS

THAT

REQUIRE

LUBRICATION

NOTE:

Types

of

lubricants

and

areas

where

they

are

used

are

listed

in

table

1.

Table

1

Type

of

Oil

Areas

used

|

Silicon

Oil

#50000

raising

shaft

GYA-008

all

other

areas

Lubrication

points

are

specified

for

oils

other

than

GYA-008.

Never

use

a

different

type

of

oil.

®

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.

@

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)

top

and

side

(sliding

section

of

auto-stop

mechanism)

EV

cam

side

surface

(sliding

section

of

elevation

cam)

Fig.

7-1

Driving

panel

assembly

section

Switch

Locker

Section

10

®

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.

7-2

Switch

locker

section

e

EV

Lever

Unit

Section

Apply

oil

to

the

sliding

sections

of

leaf

spring

(A)

and

EV

lever

unit

to

decrease

the

burden

on

the

mechanism.

leaf

spring

(A)

sliding

section

EV

lever

unit

EV

lever

unit

sliding

section

Fig.

7-3

EV

lever

unit

section