Pioneer PL-550 Service manual

CDrqoNeerr

PL.5iEicl

MODEL PL-550

Type

HGT 22OY and

S

ST

l

I

t I

I

r

This seruice repairing 43-48.

COMES IN THREE VERSIONS

Voltage

(Switchablel

240V

10V, 120V, 22OV and 240V

1

11OV,

manual is applicable

PL-550/HGT

the

120V,22OV

to the

please

type

240V

and

PL-550/5, ST

see the

DISTINGUISHED

(Switchablel

(Switchable)

type.

manual on

pages

When

AS FOLLOWS:

SEMKO DEMKO model without

General

General export

(Sweden),

(Denmark)

export

Remarks

NEMKO

El

and

phono

cartridge.

model

with

model without

(Norway),

(Finland)

phono

cartridge

phono

approved

cartridge

CONTENTS

1.

SPECTFTCAT|ONS....

PANEL FACILITIES .. .

2.

3. PARTS

4. EXPLODED NOMENCLATURE

5.

LOCATIONS

VIEW

.. ..

OF SCREW,

WASHERS AND

NUT

. 16

4 5 7

11

6. SCHEMATIC

AND PARTS

Schematic

6.1

6.2

6.3

6.4

7.

Drive Control

Power Supply Assembly

Positional Detector Assembly

PACKING 25

8. OPERATING

DIAGRAMS, LIST

Diagram

Assembly

PRINCIPLES CIRCUIT DESCRIPTION

P.C.

BOARD

(PWG-008)

(PWR-822)

PATTERNS

.

. .

(PWX-006)

8.1 Block Diagram

8.2 Motor Operation Waveforms

8.3

9. TROUBLE SHOOTING

9.1

9.2

9.3

Motor Does Motor Run-away Motor

9.4 Unstable ADJUSTMENT

10.

11. D.D

PL-550

PL-550X/ST it is black cabinet. nents are same as

MOTOR EXPLODED

Additional

differs

PL-550.

Not Rotate

Alternates

Rotation

PROCEDURES 40

Service

from PL-550at Except

GUIDE

Between

Near Rated

VIEW

M'anual

packing

the

case

Forward And

Speed

..

point

of cabinet appearance;

and cabinet all

Reverse Rotation

Enclosed

of compo-

17 19 22 24

27 29

36

37 38 39 39

Herewith

J

1. SPECIFICATIONS

Motor Motor.

Turntabfe Platter Moment Speeds Speed Wow Signal-to-Noise

Rotational

Build-up Speed Deviation Speed vs.

Speed Drift

Tonearm Type

Effective overhang UsableCartridgeWeight

Arm Height Adjust

)uDTUnctlons Anti-skating

Lateral Stylu Arm Cueing Headshell Strobe Free Insulator

and Turntable

of

Control

and Flutter

Time

Load

Less than

.

Arm Length

(For

cartridge

..

balancer

pressure

s

height

device

stand

light

stop

hinges

feet

. .324mm diam.

Inertia

force

adjusting device

.

. . 340kg.cm2

Range

. . .

Ratio

Characteristics

. . . . . . Within24o"

.

. .

Characteristics.

. . Less

0.00004%/degree

Static-balance

weighs

over 9.5g,

Range t5mm

control

d irect-readout

....QuartzPllHall

aluminum

(including

. . 33-113

!6%o

Less than

More

rotation

Stable

. . .

than

0.0003%

temp.

change

type,

(min.)

. 49

attach the

counter weigh

alloy

platter

and

O.O2|yo

than 70dB

at33-1l3rpm

Less than

up

to 120

at 33-1

lh

at33-1l3rpm

S-shaped

.

. . .

. . 15.5mm

to 14.59

sub weight)

t

motor

die-cast

mat)

45rpm

(WRMS)

(D|N-B)

0.003% grams

drag

load

l3rpm

pipe

arm

221mm

(max.)

Semiconductors lCs...

Transistors

Diodes

Hall

elements

Accessories 45rpm

Adaptor Overhang Screwdriver Sub Cartridge Cartridge Cartridge Operating

Miscellaneous Power

Power Dimensions

Weight

lfLfri"trr"rs without notice,

gauge

weight

mounting mounting nuts mounting

instructions

Requirements

Consumption

and

due to improuements.

.

(ST,

screws

(ST,

washers

l9-sl16(W)

design subject

(ST,

. . .

. Ac 110-120-22o-240y

490(W)

HGT

type)

HGT

type)

HGT

type)

x 1S5(H)

x7-s116(H)

possibre

to

1 1

.

. . .

. . l

.

5ol60Hz . . . 5W

x 390(D)mm

x ls-3ls(D)in. ,t2kgl26tb6oz

modification

2 g

3

1 1 l 6 2 2 I

_

Furnished Type.. Replacementstylus.

StylusTip Output Tracking Frequency

Cartridge (S

Voltage.

Force

.

Response

...MovingmagnettypePC-550E/ll

. . .

type)

...PN-550E/ll

...0.3x0.7mildiamond

(at

3mV

1kHz,50mm/s

1.0g to 1.8g 10 to

RMS)

(proper

30,000H2

1.5g)

2. PANEL FACILITIES

HEADSHELL STAND

Convenient stand for storing headshell storing cover placed

guide pin

here if the headshell is too large to allow

to be

here.

closed

with

fully. The 45rpm adaptor can also be

a spare cartridge. Aligh

of stand and insert. Avoid

slot

the dust

45 RPM ADAPTOR

Place

on center shaft when

large

STROBE

Lights ELEVATION lever to become stationary

to

set

hole).

center

LTGHT----

to illuminate

ON.

is set to ON. The stroboscope appears

playing

stroboscope

when the

Quartz

45 rpm records

'--

-

POWER/ARM

when

LOCK button is

(with

-.-'-'"',,*

PLATTER MAT COVER ARM REST

Supports the tonearm. Gently shown playing

by

-,- -.- -"^.

arrow

records.

- - , .

to clamp.

Be

]

-.,,,

-.-.1

press

tonearm in direction

to

sure

clamp

when not

PL-E'5cl

""'Cf**

@-

QUARTZ

Quartz ON. Platter speed selected by

LOCK BUTTON

PLL

system

rotation

the

functions when button

becomes

SPEED buttons.

precisely

is depressed to

locked to the

SPEED ADJ. CONTROL

Can be used to increase or decrease the speed with respect to the selected rotation. Set

turn

and speed decrease speed

45 RPM SPEED

Press to

33 RPM

Press to

POWER/ARM

Combines OFF.. ON-UP

DOWN

this control toward the

(maximum

(maxim

and toward the

6%)

um 6ok).

BUTTON

play

45 rpm records.

SPEED BUTT'ON

play

33-1

13

rpm records.

ELEVATTON LEVER

power

switch and Power is cut off. Power is turned on When moved from tion, the tonearm is raised. Tonearm

Quartz

tonearm elevation switch.

gently

is

LOCK button to OFF

+

direction to

-

(platter

DOWN to this

lowered.

increase

direction

rotates).

posi-

to

o

PARTS

3.

LOCATIONS

TOP VIEW

Cabinet

PMM-056

PMM-062

PL-550X)

of

(ST

type

Headshell PNW.O73

stand

Plate

PAN-029

Control

panel

PXT.O98

(ANTI-SKATE)

Knob PAA.O14

Headshell PXA.630

assembly

BOTTOM

VIEW

Line voltage

PSB-001

selector

Power

transformer

PTT,O14

motor

D.D. PXtV-029

Power

transformer

PTT.O,I4

.a.?

ii

'*l

,t\*

',,'

PL-E'5'O

Power

supply

PWR,822

assembly

|

tor

I

Neon lamp PE

L.OI l

control assembly

Drive PWG.OO8

4. EXPLODED VIEW

?

-i?

e

PSA4x 10

Platter mat cover PEC.033

Platter PNR.O31

Dust cover PNV-011

Rubber cushion

PNT{08

OCM4x10

Screw PBA-033

l'-.-

Strobe unit

\-

PXT-I74

Plate PAN.O29

(B)

Plste PNB.064

PT4x10

d@

D.D. motor PXM-029

page

See

Hexagon socket M4x25

t-

PART 1 see

6

39

-

.

Prax1o

screw

Bottom PXA.133

page

1 1

lamp

Neon PEL.Ol

."

plate

assombly

T

/Name

.

plate

Screw PBA-037

Bottom

PNW-096

Plate

A--.-Z^

6..

Y

Scrgt

PBA

4<

g

//o\

g

@

Screw

PBA.O37

I

A

E

le €

@

(B)

Plate

PNB-064

Jr

Hinge

assembly

PXA.171

RM3.

-ry7

.

:'uo,..><

(A)

Plate

PNB.063

Cabinet

PMM.O66

PMM.062 (ST

..

of PL-550X1

Knob

PAAO14

Control PXT{g8

PSA3x8

Plate PAM.O41

RM3.1x13

(ANTI-SKATE)

panel

type

Line

voltage

PSB-001

Part

selector

3 see

NOTE:

Part

AC PDG-OO4

page

indicated

power

cord

Strain relief

E32.056

green

in

Screw

type

PB4-034

cannot

Plate PAT.O22

be

supplied.

g

e

Screw

PBA.O37

Screw PBA{37

I

.9.

g

@

\

\. CW3.1 x 13

go

Foot aisembly

PXA-I

15

.6

Strain

KNK.244

Part

2 see

PXA-237

PT4x16

Terminal KKC-021

relief

page

12

(S-type)

#

I

PT3x6

'-1

Part 3 s€e

PT4xl6

\...]

page

I

13

PL-s5Cl

4.1 PART

A

B

1

NOTE:

Parts

indicated

in

green

type cannot be supplied.

A

lk\

$-

l.

-R

U

//

616

c

P.c. Board holder KNK.186

Drive

control

PWG-008

D

+

assembly

-t-e

V

, P.C.

Board holder

I

r

821-0OB

,,-.2<A>-

Slr';d:";,<

v

l_

Power supply assembly PWR-822

v

)

transformer

Power

PTT.O14

d

PSA4x6

Fg

U

0

I

J-, Rnuou".. *rtrion flu

\J

I fl *","'"

CJ-

eee.oar

,g

rea.ozs

c

D

PART 2

4.2

ln assembly

A

Operation

PXA-237

button

NOTE:

Parts

indicated

green

in

cannot be supplied.

type

B

Spring PBH.O19

Button unit PAD.OI

1

FW4

!.

I

ffiw,

(SPEED

Knob PAA.OO9

ADJ)

Micros,witch KSF-023

PSA3x

1 4

ball

St€el

B

Spring PBH.O17

c

Spring

PBH-018

D

l%

M icrosi\rr, KSF-023

EW3

itc h

l

@-ewa

PAD-01

Push PSG-001

Variable PCS.O03

(without

3

switch

resistor

assemblY)

(Ouarz

Lockl

c

D

PL-55Cl

4.3 PART

A

Cartridge

PBA.9O5

Headshell assembly

PXA-630

B

3

mounting screw

llx";.t"tn'

il,il8!B"'

NOTE:

Parts

Screw PLA.567

indicated in

green

type cannot be supplied.

Tonearm

PPD-543

Weight PXA-580

assembly

EV assembly PXA-

EV sheet assembly PXA.O86

A

165

Arm rest PNW-170

Arm rest PXA-164

?

il

tt

dr

v:

assembly

PT4xl6

-l

3x4

pT4x16

l

Washer

822.650 '

Nut PBN,OO4

.-€,

rA

PT4x16

N4

*g'lm'lu,

AS

1

A

g

iffffiTo''

lever

PNW.071

Spring

PBH-023

Plate

PXA-088

c

D

N'*'

Cam unit PNW.070

g (9

EW2

Lever PNW-07O

Washer PNB-527

D

15

NOMENCLATURE

5.

OF SCREW,

WASHERS

AND NUT

The following symbols stand

Symbol Dercription

head

RT

PT

BT Einding head

CT

TT

ocr

PM Pan

CM

ocM

Brazier

Pan

head tapping

Countersunk head tapping

Truss head tapping

a

Oval countersunk head screw

head

machine

Countersunk screw

Oval

countersunk head

machine

screw

tapping screw

screw

tapping screw

screw

tapping

screw

head

machine

for

screw

screws,

washers

Shape

$=

F

f==

CIE

and nuts

as shown in

Symbol

EW

FW

SW

N

WN

ITW

OTW Outernal toothed lock

exploded

D€scription

E type

washer

Flat washer

lock

Spring

Nut

Washer

Internal toothed lock

faced

washer

nut

sc Slotted set screw

SF

Slotted set screw

view.

washer

(Cone

(Flat

washer

point)

Shape

P

\D

rd

\v

o

@

A

v

tA?.

avJ

e -D

e E}

l H

T

F

TJ

m

I

TM

BM

PSA

PSB

PSF

EXAMPLE

TT

Truss head

Binding head

Pan lock

Pan head

-lengthinmm(/)

I I

machine

head

screw

washer

head

screw

washer

and f

screw

diameter

Symbol

in

screw

with spring

lat

washer

with f lat

mm ( d

washer

)

F

tr

ffi"

HS

ocw

CW Countersunk head

RW

FW'90xl'

-rT

Hexagon

screw

Oval screw

Round head

I

| |

I

I |

socket

countersunk

"-^^-;^^-tar

thicknessinmm(r) diameter in mm

Symbol

headless

head

wood screw

set

wood

(d

)

@

._'l '

:-i' f- J

:]

16