Pioneer PL-5 Manuale utente

Service

ETAIEY|

REPAIR

ADJUSTMENTS

ORDER

NO.

ART-705-0

STEREO

TURNTABLE

L=-5

PL-420

MODEL

PL-5

COMES

FOUR

VERSIONS

DISTINGUISHED

FOLLOWS:

Voltage

Remarks

120V

only

U.S.A.

model

(Without

cartridge)

120V

only

Canada

model

(Without

cartridge)

110V—120V/220V—240V

(Switchable)

General

export

model

110V—120V/220V

—240V

(Switchable)

U.S.

military

model

MODEL

PL-420(which

minor

change

design

from

PL-5)

COMES

THREE

VERSIONS

DISTINGUISHED

FOLLOWS:

Voltage

Remarks

120V

only

U.S.A.

model

110V—120V/220V—240V

(Switchable)

General

export

model

(Without

dust

cover)

110V—120V/220V—240V

(Switchable)

U.S.

military

model

(Without

dust

cover)

This

the

service

manual

for

model

PL-5/KUT.

For

servicing

the

other

types,

please

refer

the

additional

service

manual.

manuel

d’instruction

refére

mode

réglage,

francais.

Este

manual

servicio

trata

del

método

ajuste

escrito

espanol.

For

the

circuit

and

mechanism

descriptions,

please

refer

the

supplement

model

PL-7

service

manual

(ART-768).

ees

PIONEER

ELECTRONIC

CORPORATION

4-1.

Meguro

1-Chome,

Meguro-ku,

Tokyo

153,

Japan

U.S.

PIONEER

ELECTRONICS

CORPORATION

8&5

Oxford

Drive,

Moonachie,

New

Jersey

07074,

U.S.A.

PIONEER

ELECTRONIC

(EUROPE?)

N.V.

Luithagen-Haven

2030

Antwerp,

Belgium

PIONEER

ELECTRONICS

AUSTRALIA

PTY.

LTD.

178-164

Boundary

Road,

Braeside,

Victoria

3195,

Australia

FU©®MAY

1981

Printicd

Japan

era

CONTENTS

SPECIFICATIONS

....

2.0.02.

022 eee

eee

FRONT

PANEL

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

DISASSEMBLY

........

200.

eee

TROUBLESHOOTING

..........-

202s

PRECAUTIONS

FOR

REASSEMBLY........

P.C.

BOARDS

CONNECTION

DIAGRAM.....

SCHEMATIC

DIAGRAM

.............0055

SPECIFICATIONS

Motor

and

Turntable

Drive

System

.....0..

0.000

ccc

cece

eee

Direct-drive

MOTOR

sic

ins

tee

cota

tee

Salle

tte

del

fangs)

wha, LESS

servo

motor

Turntable

Platter

.........

310mm

diam.

aluminum

alloy

die-cast

SPECS?

ooe.ns

Sesh

evn

ole

wescbile

vee

scouts

nace

ees

33-1/3

and

45rpm

Wow

and

Flutter

.........

0.00000

Less

than

0.025%

(WRMS)

Signal-to-Noise

Ratio................

than

78dB

(DIN-B)

(with

Pioneer

cartridge

model

PC-3MC)

Tonearm

TEV

DO:

5.220

yalens

ccseiece

steve

Static-balance

type,

Straight

pipe

arm

Effective

Arm

Length.

........

0.0000

eee

221mm

Overhang.:

cccies-os

conse

tnead

whee

ble

eae

15.5mm

Usable

Cartridge

Weight..............-.

(min.)

(max.)

Subfunctions

Full

auto

mechanism,

Anti-skating

force

control,

Stylus

pressure

direct-readout

counterweight,

Cueing

device,

Strobe

light,

Free

stop

hinges

BLOCK

DIAGRAM...............0005.

ELECTRICAL

PARTS

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

10.

PACKING

0...

eee

11.

EXPLODED

VIEWS

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

12.

ADJUSTMENTS.

........

0.00000

cee

REGLAGE

Cae

teAE

Ghee

dated

ASUST

seo

eit

Miscellaneous

Power

Requirements...

2...

eee

AC120V,

60Hz

Power

Consumption

..........

0000

eee

Dimensions

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

420(W)

108(H)

367(D)mm

16-1/2(W)

4-1/4(H)

14-7/16(D)in.

WIGHT

405

ew:

Nee

5.9kg/13

Accessories

EPL

AGaDtel”

ictese

soe.

Geta

oats

ole

shee

Bia

Paes

Operating

Instructions

NOTE:

Specifications

and

design

subject

possible

modification

without

notice,

due

improvements.

FRONT

PANEL

FACILITIES

@START/STOP

switch

Depress

this

switch

when

starting

auto

play

when

stopping

play.

(2)

REPEAT

switch

Set

this

switch

for

repeat

play.

(3)

DISC

SIZE

switch

Set

this

switch

accordance

with

the

size

the

record

which

played.

[7°

17]

(released

position):

[12’’

30]

(depressed

position)

(4)

Speed

check

window

Look

through

this

window

and

observe

the

movement

the

striped

pattern

when

checking

the

rotational

speed

finely

adjusting

the

speed.

The

position

the

striped

pattern

differs

according

the

power

line

frequency

(50

Hz)

the

area

use

and

the

speed

(33

rpm)

the

platter.

Top

pattern:

For

rpm

area

Second

pattern:

For

rpm

area

Third

pattern:

For

rpm

area

Bottom

pattern:

For

rpm

area

()SPEED

ADJ

control

Rotate

this

control

order

finely

adjust

the

speed

the

platter.

The

speed

reduced

when

the

control

rotated

the

[~]

direction.

The

speed

increased

when

the

control

rotated

the

[+]

direction.

@®

SPEED

switch

Set

this

switch

accordance

with

the

speed

the

re-

cord

which

played.

[33]

(depressed

position):

For

33-1/3

rpm

records

[45]

(released

position):

For

rpm

records

For

EPs

For

LPs

O8O®8

Cartridge

(8)

Headshell

Tonearm

40)

ARM

ELEVATION

lever

Operate

this

lever

when

starting

manual

play

when

temporarily

suspending

play.

ANTI-SKATE

control

This

rotated

when

performing

the

antiskating

adjust-

ment.

Arm

rest

This

serves

hold

and

clamp

the

tonearm.

When

moving

the

tonearm,

release

the

clamp

(13)

Tracking

force

adjustment

weight

This

used

when

adjusting

the

tracking

force.

(4)

Platter

(15)

Platter

mounting

shaft

Rubber

mat

47)

adapter

This

used

when

playing

records

withouta

‘”

middle.”’

(8)

Cabinet

Dust

cover

DISASSEMBLY

3.1

PANEL

AND

BASE

removing

the

panel,

the

below

listed

steps

the

order

given.

Using

any

unnecessary

force

will

result

bending

the

springs

damaging

other

parts.

Panel

removal

steps

Remove

the

headshell

and

weight

assembly,

and

the

weight

shaft

assembly.

The

weight

shaft

assembly

removed

loosening

screw

(Hexagone

socket

screw)

and

the

headshell

loosening

screw

Lift

off

the

turntable

platter.

Turntable

platter

Panel

Dust

cover

Loosen

insulator

attachment

screws

and

remove

the

insulator.

(Do

not

mix

the

color-

coded

float

springs.

They

must

replaced

with

their

original

insulators

during

reassemb-

ly.)

Set

the

record

size

selector

switch

“‘30cm’’.

Release

the

arm

clamp

and

move

the

tonearm

far

will

toward

the

center.

Then

rotate

the

motor

center

shaft

clockwise

return-

ning

the

tonearm

the

arm

rest.

Stop

the

center

shaft.

Remove

the

rear

panel

cord

strain

relief.

Weight

assembly

Saen

Rubber

52-

Weight

shaft

assembly

Ground

‘wire

Control

mechanism

section

Fig.

3-1

Disassembly

Lift

the

front

section

the

panel

(operating

controls)

very

slightly

and

make

sure

the

slider

and

spring

disengaged

from

the

selector

lever.

the

spring

caught

something,

use

long

and

thin

screwdriver

and

free

the

spring

from

the

large

center

opening.

Unplug

the

and

connectors.

Completely

remove

the

cord

from

the

panel.

10.

Lift

the

headshell

end

the

tonearm,

and

taking

care

not

damage

the

tonearm,

remove

from

the

panel.

(Hold

the

tonearm

steady.)

3.2

D.D

MOTOR

ASSEMBLY

After

the

panel

has

been

removed,

loosen

the

three

motor

attachment

screws

and

remove

the

motor.

3.3

TONEARM

SECTION

Remove

the

tonearm

section

taking

out

the

three

arm

base

attachment

screws

and

one

ground

wire

securing

screw

3.4

CONTROL

MECHANISM

SECTION

After

the

tonearm

section

has

been

removed,

loosen

the

three

control

mechanism

attachment

screws

and

remove

the

assembly.

Screwdriver

3.5

TONEARM

Disconnect

the

tonearm

lead

wires

from

the

board

(See

Fig.

3-2).

Note

that

some

the

lead

wires

have

been

soldered

the

board,

and

must

discon-

nected

with

care.

Loosen

the

set

screw

with

screwdriver

remove

the

plate

under

the

arm

base

(See

Fig.

3-3).

Undo

the

screw

securing

the

tonearm

the

arm

base

(See

Fig.

3-3).

Tonearm

lead

wires

Fig.

3-2

Disconnect

the

tonearm

lead

wires

plate

Fig.

3-3

Remove

tonearm

Driver

lever

spring

3.6

PANEL

AND

BASE

REASSEMBLY

Turn

the

center

shaft

clockwise

that

the

mechanism

assembly

set

the

reset

posi-

tion.

Hook

the

driver

lever

spring

the

panel

boss.

Lift

the

forward

the

panel

and

plug

the

and

connectors.

Clamp

the

tonearm

the

arm

rest

and

push

the

START/STOP

button.

Driver

lever

Fig.

3-4

Spring

positioning

Attach

the

cord

stopper.

Attach

the

insulators.

(Make

certain

the

color-

coded

float

springs

are

attached

the

correct

insulators.)

Attach

the

weight

shaft

assembly.

Start

Jever

Driver

lever

spring

Fig.

3-5

Positioning

the

spring

TROUBLESHOOTING

Use

the

following

directions

find

the

cause

each

type

breakdown.

Improper

adjustment

units

should

completely

readjusted.

DOES

NOT

LEAD

Motor

does

not

rotate.

YES

Arm

clamp

not

released.

”

Depression

rubber

sheet.

YES

Tracking

force

too

heavy.

YES

Insufficient

torque

the

lead-in

latch.

(See

section

YES

plate

not

properly

attached.

Repeat

switch

not

ON.

YES

The

start

lever

unit

separated

from

the

driving

lever

unit

section.

(See

section

Control

lever

weak.

Section

shown

figure

4-2,

the

start

lever

unit

out

line

the

direction

repeat

will

not

operate.

it is

too

far

the

direction

;

the

unit

will

not

start.

these

cases,

assemble

referring

the

method

joining

the

panel

and

bottom

panel

(lid).

Refer

the

‘‘Motor

does

not

rotate”

section.

Section

shown

figure

4-1,

the

forre

requirea

turn

over

the

lead-in

latch

less

tha

80g

ata

point

13mm

from

the

center,

bend

tke

click

leaf

spring

toward

until

the

force

180

—

320g.

Lead-in—|3™.

latch

,,)

Bend

“(180

—

3204)

Click

leaf

spring

cam

Fig.

4-1

Adjustment

lead-in

latch

with

isu

fficient

torque

Driving

lever

Driving

leveispr-

ing

Surface

Set

;

Control!

Start

lever

unit

base

Fig.

4-2

Misaligned

start

lever

init

REPEAT

FUNCTION

REPEATED

Separate

the

panel

section

and

bottom

panel

and,

shown

figure

4-3,

apply

tension

10g

the

start

lever

unit

direction(A)

the

repeat

function

operates,

the

selector

and

reset

plate

sections

are

not

moving

properly.

the

unit

stops,

the

driving

lever

(B)

not

moving

properly.

Driving

lever

(B)

not

moving

pro-

perly.

YES

Start

lever

not

moving

properly.

YES

Selector

not

moving

properly.

(See

section

YES

Reset

plate

not

moving

properly.

(See

section

YES

Reset

plate

weak.

Section

there

are

protrusions

remaining

from

the

original-pressing

process

surfaces

@),®),

and

©of

the

sub-panel

which

slides

with

the

selector,

the

movement

the

selector

will

adversely

affected.

Therefore,

these

protrusions

must

removed

(Fig.

4-4).

Section

there

are

plastic

protrusions

the

pressure

section

(D)

the

reset

plate,

these

protrusions

will

come

contact

with

the

lower

surface

the

driving

panel

when

the

reset

plate

moves

direction

(E)

and

the

movement

the

reset

plate

will

adversely

affected.

Therefore,

these

protrusions

must

removed

(Fig.

4-4).

AUTO-RETURN

DOES

NOT

WORK

Section

After

performing

the

return

operation,

the

curved

section

the

signal

plate

and

curved

sect-

ion

the

starting

plate

are

not

contact

with

surfaces

‘A)

and

(B)

respectively

the

cam,

reset

will

incomplete

and

the

starting

position

will

late.

result,

the

return

function

may

not

operate

times.

this

case,

bend

the

signal

plate

(C)so

that

dimension

0.5mm

larger.

Sub-panel

Start

lever

unit

Fig.

4-3

Check

repeat

operation.

Driving

lever

(B)

shaft

bent.

Start

lever

warped.

Plastic

protrusions

cut

surfaces

the

sub-panel

the

selector

slide

section.

Protrusions

reset

plate

pressure

pin.

Sub-panel

(2e>

SON

@®

MINS

Reset

plate

Reset

plate

Fig.

4-4

Improper

movement

selector

Signal

plate

Starting

plate

TOO

least

0.5mm

Cam

Fig.

4-5

Incomplete

reset

starting

and

signal

plates

Change

starting

position

adjust-

ment.

YES

Starting

plate

does

not

the

Too

much

grease

between

the

signal

plate.

plate

and

the

cam.

YES

Inner

diameter

the

starting

plate

hole

small.

Protrusions

the

caulk

section

the

starting

plate

hole.

Not

enough

grease

between

the

starting

plate

and

signal

plate.

After

starting,

incomplete

reset

the

The

curved

section

the

signal

plate.

(See

section

plate

deformed.

YES

The

inner

areas

records

can

not

;

be-tracked.

Arm

lead

wire

caught

something.

YES

cord

touching

the

plate.

Operator

the

detection

lever

not

smooth.

Looseness

the

plate

attach-

ment.

RETURN

FAST

(RETURN

1mm

PITCH)

Protrusions

the

pinion

gear

section

(See

section

Section

there

are

rough

areas

plastic

protruding

from

the

(A)

section

the

protruding

section

the

pinion

gear,

the

return

function

may

operate

pitch

only

1mm.

this

case,

remove

the

Fig.

4-6

Elimination

pinion

plastic

protrusions

completely

(Fig.

4-6).

gear

protrusions

Pinion

geai

Protruding

section

TONEARM

DOES

NOT

LOWER

CORRECT

POSITION

Incorrect

adjustment.

YES

plate

operation

not

smooth.

lever

and

lever

are

not

moving

smoothly.

Location

stylus

was

changed

during

cartridge

replacement.

RECORD

SIZE

SELECTOR

DOES

NOT

WORK

Tonearm

descends

17cm

location

when

record

size

selector

set

30cm.

Size

select

warped.

YES

Size

select

lever

does

not

operate

Size

select

lever

warped

smoothly.

Tonearm

descends

30cm

location

when

record

size

selector

set

17cm.

Size

select

return

warped.

YES

Plastic

protrusions

auto-stop

mechanism

resin

section

the

select

lever

sliding

surface.

Select

lever

does

not

operate

smooth-

ly.

Plastic

protrusions

the

select

lever.

Index

cam

does

not

operate

smoothly.

Sapte

ped

sheoked

Secnen

YES

Size

select

weak.

MOTOR

DOES

NOT

ROTATE

connectors

are

not

at-

tached.

YES

Connector(s)

not

properly

installed.

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