Teac VRDS-10 Manuel utilisateur

TEAC,

(ajieler

“w68

9298.

SERVICE

MANUAL

VRDS-10

Compact

Disc

Player

COMPACT

glise

DIGITAL

AUDIO

Effective

October,

1992

5704962700

VRDS-10

SAFETY

INFORMATION

SAFETY

INFORMATION

This

product

has

been

designed

and

manufactured

according

FDA

regulations

“title

21,

CFR,

chapter

subchapter

based

the

Radiation

Control

for

Health

and

Safety

Act

1968”,

and

classified

class

laser

product.

There

not

hazardous

invisible

laser

radiation

during

operation

because

invisible

laser

radiation

emitted

inside

this

product

completely

confined

the

protective

housings.

The

abel

required

this

regulation

shown

(1).

CAUTION

you

remove

the

above-mentioned

housings

under

the

operating

state

the

product,

there

possibility

human

access

the

invisible

laser

radiation

emitted

from

the

optical

pickup.

Pay

careful

attention,

not

let

the

invisible

laser

beam

enter

into

your

eyes.

you

find

troubled

state

the

laser

diode,

change

the

specified

new

optical

pickup.

you

find

troubled

state

safety

interlock

parts,

change

the

same

type

parts

described

parts

list.

CERTIFICATION

THIS

PRODUCT

COMPLIES

WITH

DHHS

RULES

CFR

SUBCHAPTER

APPLI-

CABLE

DATE

MANUFACTURE.

TEAC

CORPORATION

3.7-3

NAKA-CHO,

MUSASHINO-SHI

TOKYO,

JAPAN

MANUFACTURED

Optical

pickup:

Type

KSS-151A

Manufacturer

SONY

Corporation

Laser

output

Less

than

0.2

the

objective

lens

For

U.S.A.

Wavelength

760

800

CAUTION

ACHTUNG

OBSERVERA

ADVARSEL

THIS

LABEL

ATTACHED

THE

PLACE

ILLUSTRATED

INFORM

THAT

THE

APPARATUS

CONTAINS

LASER

COMPONENT.

DIESE

AUFKLEBEMARKE

IST

DEM

DER

ABBILDUNG

GEZEIGTEN

ORT

;

ANGEBRACHT

DARAUF

HINZUWEISEN,

DASS

INNERN

DES

GERATS

EINE

LASER-KOMPONENTE

BEFINDET.

PASKRIFTEN

SITTER

APPARATEN

SOM

VISAS

SOM

UPPMANING

ATT

APPARATEN

OMFATTAR

INBYGGD

LASERKOMPONENT.

‘oO

DETTE

MAERKAT

ANBRAGT

SOM

VIST

ILLUSTRATIONEN

FOR

ADVARE

BRUGEREN

APPARATET

INDEHOLDER

LASERKOMPONENT.

DETTE

MAERKAT

SOM

VIST

ILLUSTRATIONEN

ANBRAGT

INDERSIDEN

TOPDAEKSLET

FOR

ADVARE

BRUGEREN

YDERLIGERE

FREMTRA-NGEN

VIL

VERE

FORBUNDET

MED

FARE

FOR

UDS/ETTE

SIG

FOR

LASERSTRALING.

ADVARSEL

—

BETJENING

ANDRE

KONTROLLER

REGULATORER

ELLER

BENYTTELSE

ANDRE

FREMGANGSMADER

END

BESKREVET

HERI

FOR-

BUNDET

MED

FARE

FOR

UDSAETTELSE

FOR

LASERSTRALING.

VARNIG:

APPARATEN

INNEHALLER

LASER

KOMPONENT

MED

STRALNING

OVERSTIGANDE

KLASS

“ADVARSEL:

USYNLIG

LASERSTRALING

VED

ABNING

NAR

SIKKERHEDSAFBRYDERE

UDE

FUNKTION.

UNDGA

UDSAETTELSE

FOR

STRALING”

“VAROITUS!

SUOJAKOTELOA

SAA

AVATA.

LAITE

SISALTAA

LASERDIODIN.

JOKA

LAHETTAA

(NAKYMATONTA)

SILMILLE

VAARALLISTA

LASERSATEILYA’.

CLASS

LASER

PRODUCT

LUOKAN

LASERLAITE

KLASS

LASERAPPARAT

VRDS-10

SPECIFICATIONS

AUDIO

(A-F

44)

Number

Channels

A-FAt

VAR

2FeVAay

Frequency

Response

—

20,000Hz

0.3dB

ARBRE

1~20,000Hz

0.3dB

Signal

Noise

Ratio

Better

than

110dB

(1kHz)

110dB

LIE

(1kHz)

Dynamic

Range

Better

than

Q99dB

(1kHz)

PAF

S9IVYY

99dB

t_F

(

1kHz)

Harmonic

Distortion

0.0013%

(1kHz)

pees

0.0013

%ELF

(1kHz)

Wow

and

Flutter

Unmeasurable

(Quartz

accuracy)

DIBy9I-

PRARMB

OKIE)

Channel

Separation

Better

than

110dB

(1kHz)

FeVRNENL-Yay

110dBUAE(1kHz)

Output

Analog

2.2Vrms

TFOTHA

2.2Vrms

Digital

0.5Vp-p/

(Coaxial)

FVINWKHA

0.5Vp-p/75

(COAXIAL)

-15dBm

—-21dBm

(Optical)

—

15~-

21dBm

(OPTICAL)

Bitstream

Conversion

8-times

oversampling

20-bit

digital

filter

D/A

Converter

Digital

Filter

Analog

Filter

3rd

order

Butterworth

filter

PICK

Type

Optical

3-Beam

laser

pickup

Objective

Lens

2-dimensional

parallel

drive

Laser

Type

GaAlAs

type

semiconductor

laser

Wave

Length

780nm

SIGNAL

FORMAT

Sampling

Frequency

44.1kHz

Quantization

Bit

16-bit

linear/

channel

Channel

Bit

Rate

4.3218Mb/sec

Channel

Modulation

Code

EFM

(Eight

Fourteen

Modulation)

CIRC

(Cross

Interleave

Reed

Solomon

Code)

Error

Correction

GENERAL

Power

Requirements

120/230V

AC,

50-60Hz

(General

Export

Model)

120V

AC,

6OHz

(U.S.A./Canada

Model)

230V

AC,

50Hz

(Europe

Model)

240V

AC,

50Hz

(U.K./

Australia

Model)

Power

Consumption

watts

‘Dimensions

442

149

331mm

(17-3/8"

5-7/8"

13-1/16"

)

Weight

(net)

10.0kg

(22-1/16

Ibs)

Standard

Accessories

Wireless

Remote

Control

Unit

(RC-

481),

RCA

pin-plug

cord,

Battery

(SUM-3,

“AA’,

”"R6”

type)

Lock

Plate

@improvements

may

result

specification

feature

changes

without

notice.

D/A

DYIN-F—

hKARU-L

FVIND

BSHEA-N-HUYTPUYS

kKFYINWI

ANI

FHOAI

BRNI-ID-AD

(Ex

IPT)

SLY

ABH

KHARSE-L

WML

YARHAN

RIFT

ate

——

780nm

94—Vy

BAL

ARR

44.1kHz

BTiteEy

h-ULP/F

VAIL

wEL—b

4.3218Mb/

sec

BAX

EFM

IS—-TEAX

CIRC

(fd)

Big

100V

50-60Hz

BREN

18W

NRE

Tie

442

149

331mm

10kg

@I{VLAVEIY

RC-481

ervaIs7I—-F

Bit

(#3,

SUM-3)

RRA

HRS

KOMI,

CEOKD

BETS

CEMB”VET

VRDS-10

CASE

AND

FRONT

PANEL

REMOVAL

numbe

mbl

BSMICHLT

Disasse

VRDS-10

ADJUSTMENT

AND

CHECKS

Replacement

the

pickup

assembly

Before

removing

the

pickup

assembly

sure

solder

-bridge

where

indicated

the

inset

(Fig.

4-1)

prevent

the

laser

diode

from

being

electrostatically

damaged.

After

replacing

the

pickup

assembly,

sure

unsolder

the

antistatic

bridge.

else

the

laser

diode

does

not

function.

Before

servicing

the

pickup

assembly

sure

prevent

electrostatic-inducer

destruction

grounding

not

only

test

equipment

use

but

also

yourself

shown

Fig.

4-2.

Electrostatic

charge

drastically

shortens

the

operating

life

the

laser

diode

possibly

results

its

destruction.

@During

the

transportation,

mounting

and

dismounting

the

assembly,

support

with

your

fingers

points

and

shown

Fig.

4-3.

particularly

careful

not

touch

the

actuator,

photosensor

and

plate

and

not

apply

force

them.

@Don’t

touch

the

plated

portion

the

flat

cable

end

directly

with

fingers.

@Use

care

not

break

the

flat

cable.

@Soldering

must

done

quickly

less

than

30W,

320°C.

@Don’t

disassemble

the

pickup

ass’y.

@Don’t

apply

shock

the

pickup

ass’y.

@Don’t

place

the

assembly

place

subject

excessive

dust,

heat

moisture.

Earth

ring

(Lead

wire)

Pick-up

case

Chassis

(GNO)

Objective

@Laser

beams

are

similar

infrared

rays.

Don’t

look

the

beams

directly

and

keep

your

eyes

least

30cm

away

from

them.

@Don’t

touch

the

objective

with

fingers.

@If

objective

becomes

dirty,

playback

will

deteriorate.

clean

the

objective,

moisten

good

cleaning

tissue,

such

made

KODAK,

isopropyl

alcohol

and

wipe

the

objective

gently.

Wipe

off

and

excess

fluid

with

dry

cleaning

tissue.

Earth

Fig.

4-2

1.Ey97

ASSY

OLY

ITY

TASSY

EATERS,

V-F-

FORE

PBB

ILO

TD,

RRS

(Fig.

4-l

HBT

LUT

DOMEELTCR

EW, Eh.

MOU

SRO

Mth

BicbAT)

VEALTCOR

SAU.

MATYU

VELEKECAU-F-P

FUBLER

ITY

TASSY

EMYRIBS,

WERE

ECHR

F-REMSEHI,

AKT

REAR,

BEBE

TOE

LUC

HAW,

(Fig.

4-2)

KLD-P-YHA-K,

BBROMDS

EARS

CEP

LED,

EMBL

ETOCHIERL

OMA,

MOAL,

BVO,

Fig.

4-30AME

CHETCHEU,

aL—-9—-,

KRM.

LDF

D—behlt,

FERNY

NLMAKLY

LIVE

KAU

OFS

YLT

WVIO

FATS

SANIT

TEAWS

ETAT

MENS

CIHERE

LTHERLT

PERV

HAF

lS30W,

320°CU

FAA

IEP

MEL

OLY

ITY

TASSY

AAKOBES

KUGABRTE

EIE

LEVEE

Sry

OLY

ASSY

SBMA

TSK

HES

KIVGLORET

SM.

SEOMM

KHER

Resistor

IMQ

10M2

Plate

Photosensor

Fig.

4-3

2.999

yYZAILCDWT

—¥-KALAAROKARUARTH.

HOKEOR,

ADS

20cm

WEBEL

KEL,

@UVVACSFEMNEOE

SW.

@VYAKBNA

CBAEREAAUEFLETOC

ROLDE

UTC

RS.

Y-a

VIR

(KODAKHBEE)

C—WVFIVA—IW

(LP.A)

HIB

UCHR

BAR

OME

SIMPFRE

TCHS

;

VRDS-10

Laser

diode

check

(lop

(intensity

Optimum)

check]

Connect

voltmeter

both

ends

R407

SERVO

PCB.

Measure

the

voltage

while

playing

disc

check

that

the

measured

value

does

not

exceed

the

Iop

value

indicated

the

pickup

10mA.

(1=measured

value/22)

the

measured

value

higher

than

that

indicated,

the

pickup

may

damaged.

Pay

special

attention

that

parts

are

not

damaged

static

electricity.

@How

read

numbers

sticker

attached

the

pickup

(Example)

KSS-151A

11191

646

Serial

No.

lop

value

64.6mA

voltmeter

b--F44A-—FOURF

(lop

(Intensity

Optimum)

(BFEE2)

(Py

SRR

LDSTRITOC

-F¥—-*#SERVO

PCBO

R407

OMIT

PLAY

PORRBELHELL

TOBED

CBRRBBUKME

=$BE/

22)

KREv

APT

ASKRARETHS

lop

TOMALLEBMLTORUC

ELHBT

HMOWA,

UTS

AREER

BPR

WURICTOHERT

SIL.

OVI

yTRAY

—ORAA

(Bil)

KSS-151A

11191

646

YUP

IVNo.

lop

64.6mA

SERVO

PCB

Anti-shock

bracket

protect

the

laser

pickup

mechanism

from

shocks

and

movement

during

transit,

secured

special

anti

-shock

bracket.

Before

starting

operation,

sure

release

this

bracket,

which

accessed

from

the

bottom.

Fig.

4-4

PAtRPARB

ILMERORDD

SEFSRO,

iki

ELCHVET.

AREOES

SBA,

HTVRRASR

LTC

KRSU.

VRDS-10

4-1

SERVO

ADJUSTMENT

4-1

+-—hKiGE

TEST

DISC:

YEDS-18

MCD-111

(Except

4-1-6

and

FARFIAD:

YEDS-18£€EIZMCD-111

(4-1-668kU

4-1-7)

4-1-7TERS)

404

R407

V405

F.GAIN

V401

ita

SERVO

PCB

Fig.

4-6

VOLTAGE

CONVERSION

(For

general

export

models)

sure

remove

the

power

cord

from

the

outlet

before

repositioning

the

voltage

converter

switch.

Locate

the

voltage

selector

the

rear

panel.

—

SCLECTOR

Using

flat-bladed

screwdriver,

set

the

appropriate

230

120

position

according

your

area.

230V

120V

VRDS-10

4-1-1

Checking

the

pickup

actuator

operation

Before

the

disc,

turn

the

power

and

check

that

the

pickup

actuator

moves

and

down

three

times.

(If

the

pickup

not

inside

the

disc,

perform

the

above

operation

after

moving

the

pickup

the

inside.)

4-1-2

Sled

balance

adjustment

Adjust

V405(S.BAL)

for

potential

between

TP4

and

TP4

2(GND).

4-1-3

Tracking

balance

adjustment

Connect

the

oscilloscope

between

TP1

4(TE1)

and

TP1

6(GND),

and

press

the

(<<or

)

button.

Adjust

V401(T.BAL)

that

the

upper

and

lower

amplitudes

the

tracking

error

signal

waveform

become

equal

above

and

below

OV.

4-1-4

Focus

balance

adjustment

Connect

the

oscilloscope

between

TP1

5(RF)

and

TP1

6(GND).

the

play

mode,

and

adjust

V402(F.BAL)

that

the

waveform

the

oscilloscope

becomes

maximum.

41-1

TOF

LFF

BRONBEy

779

ATIF

aL-F-M3IBELFHT

4c.

(Cy

PRBARIBOE

SI.

RAMI

BHR

LICE

Biko)

VURBLEW.

41-2

2by

KNSY

RAE

TPADIBEY

TPAD2BE

(GND)

HOBWMEAOV

WAKA

V405

(S.BAL)

FHT

A1-3ShSyY

FYING

VRE

TPID4BEY

(TE)

TPIMDSGBEY

(GND)

Micra

AI—-TeEREL.

(dd

LPP)

ET,

VILLI

-fES

ORD

EBINCHRNS

V401

(T.BAL)

AAA

D+

-HANDVARBE

TPIOSHYY

(RFE

TPIODSBEY

(GND)

ict

AI-TSEBRT

PLAYIRME

AI-TFOREMARAI

SEI

V402

(F.BAL)

+39

4-1-5

Focus

offset

check

After

adjusting

the

focus

balance,

stop

the

player.

Check

for

offset

voltage

50mV

less

TP3.

reading

values

are

out

spec,

adjust

V402

(F.BAL)

again.

Fig.

4-8

41-574

-AAZAICy

heER

lL.

DHA

-HANDY

ABBERSTOPIREC

LUT

TP3OA7¢Yb

BEM

SOmMVIAF

CHS

LHRT

LABIA

STOMA

V402

(F.BAL)

FBT

4-1-6

Focus

gain

adjustment

(Use

YEDS-

18)

Apply

1.16kHz/3.5Vp-p

TP1

1(FE2)

from

external

OSC

via

100k

resistor.

Adjust

V404(F.GAIN)

that

phase

TP1

(FE1)

90°

with

respect

that

the

external

OSC

during

playback.

Oscillator

Oscilloscope

VRDS-10

4-1-6

74—-AATA

VIB

(YEDS-

1818)

ASBOSC

100k

OLA

1.16kKHz/3.5Vp-p

EEA

TPIOLREY(FEZIADTS.

SUAIRAES

TPIT

(FEL)

&EH@BOSC

OHTA

90°

ZKID

V404

(F.GAIN)

HBTS.

SERVO

PCB

1.16kHz/3.5V

p-p

4-1-7

Tracking

gain

adjustment

(Use

YEDS-

18)

Apply

1.7kHz/4Vp-p

TP1

3(TE2)

from

external

OSC

via

100k

resistor.

Adjust

V403(T.GAIN)

that

phase

TP1

(TE1)

90°

with

respect

that

the

external

OSC

during

playback.

Oscillator

1.70kHz/4V

p-p

Oscilloscope

Fig.

4-9

4-1-7

Koy

UTT4A

VRB

(YEDS-

1816)

ABBOSC

£9

100k

OHH

1.70kHz/4Vp-p

TPID3SHEY

(TEZICANTS.

2.7

IRRES

TP1

(TET)

EAB

OSC

OHLAOS

90°

izttZk

V403

(T.GAIN)

FHT

SERVO

PCB

Fig.

4-10

VRDS-10

4-2

AUDIO

ADJUSTMENT

4-747

Output

level

HALAL

Channel

level

difference

VRIVDLAIVE

ake

DISC:

YEDS-18

(MCD-111)

TRACK

No.

577

FREQUENCY

282%

SPECIFICATIONS

2.2

0.3Vrms

REMARKS

1.0dB

less

—

——_+—_—_

offset

adjustment

ADZy

Adjust

V151(Lch),

V251

(Rch)

AUDIO

PCB

that

the

offset

voltage

becomes

OmV.

ADewy

bBEMOMVIc

B&D

AUDIO

PCBO

V151

(Leh),

V251

(Reh)

HHS

Harmonic

distortion

Saas

Frequency

response

Byeestoacd

S/N

ratio

SANE

20Hz~20kHz

0.004

less

Within

1.0dB

100dB

better

A00Hz

HPF

20kHz

LPF

reference

level:

1kHz

DIN

AUDIO

(Use

SHIBASOKU

725

equivalent)

Channel

separation

VAIL

GINY-Yayv

95dB

.or

better

DIN

AUDIO

Emphasis

effect

LUI

yVAMR

AUDIO

PCB

9.0

1.0dB

(YEDS-18)

—

1.0dB

(MCD-111)

reference

level:

1kHz

Fig.

4-11

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