Teac VRDS-25 Manual de usuario

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VRDS-25

TEAC

SERVICE

MANUAL

Compact

Disc

Player

COMPACT

DIGITAL

AUDIO

CONTENTS

AR

q

SAFETY

INFORMATION

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2

SPECIFICATIONS

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3

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3

ADJUSTMENT

AND

CHECKS

Prrrrrerrererrr

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4

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+

HEED

4

EXPLODED

VIEWS

AND

PARTS

LIST

-+-:--21:seeeseeeee

ee

10

SEBEL

IN

YU

Rb

5

PC

BOARDS

AND

PARTS

LIST

eo

0e00

0

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ete

s

600060

6.00

sense

cee

18

BipBléN-yYuUA

/

6

INCLUDED

ACCESSORIES

C0.6.0050,

9i0.

8.0

$046

WE

00

VO

O8'

ee

50

SOs

Se

eee

23

*tigan

Effective

:

December,

1995

|

VRDS-25

|

!

1

SAFETY

INFORMATION

|

SAFETY

INFORMATION

This

product

has

been

designed

and

manufactured

according

to

FDA

regulations

“title

21,

CFR,

chapter

1,

subchapter

J,

based

on

the

|

Radiation

Control

for

Health

and

Safety

Act

of

1968”,

and

is

classified

as

class

1

Jaser

product.

There

is

not

hazardous

invisible

laser

radiation

during

operation

because

invisible

laser

radiation

emitted

inside

of

this

product

is

completely

confined

in

the

protective

housings.

The

label

required

in

this

regulation

is

shown

()

i

CAUTION

USE

OF

CONTROLS

OR

ADJUSTMENT

OR

PERFORMANCE

OF

PROCEDURES

OTHER

THAN

THOSE

SPECIFIED

HEREIN

MAY

RESULT

IN

HAZARDOUS

RADIATION

EXPOSURE.

CERTIFICATION

THIS

PRODUCT

COMPLIES

WITH

DHHS

RULES

21

CFA

SUBCHAPTER

J

APPLI-

CABLE

AT

DATE

OF

MANUFACTURE

TEAC

CORPORATION

DP.SNAKA-CHO

MUSASHINO-SH1

TOKYO

JAPAN

MANUS

ACTURED

™

Pennaeae!

VeeNeen

(Seva

ener

cnn

oe

peat

heme

Optical

pickup:

Type

:

KSS-151A

Manufacturer

:

SONY

Corporation

Laser

output

:

Less

than

0.2

mW

on

the

objective

lens

Wavelength

:760

—

800

nm

e

CAUTION

eACHTUNG

¢OBSERVERA

e¢

ADVARSEL

@

THIS

LABEL

1S

ATTACHED

TO

THE

PLACE

AS

ILLUSTRATED

TO

INFORM

THAT

THE

APPARATUS

CONTAINS

A

LASER

COMPONENT.

:

LASER

RADIATION

WHEN

OPEN

AND

INYERLOCKS

pera’

‘AOI

EXPOSURE

TO

BEAM

VORSICHT!

UNSICHTBARE

LASEAGTRAMLUNG

TRITY

AUS

Wen

DecKeL

GeOFFNET

UNO

WEN

GHEITSVERRIE

GELUNG

GoERarUCKt

1st

NCHT

DEM

STRAHL

AUSSET

*

QSYNUG

LASERSTRALUNG

NAR

DENNA

DEL

STRALEN

AR

TAR

@

DIESE

AUFKLEBEMARKE

IST

AN

DEM

IN

DER

ABBILDUNG

GEZEIGTEN

ORT

ANGEBRACHT

UM

DARAUF

HINZUWEISEN,

DASS

IM

INNERN

DES

GERATS

EINE

LASER-KOMPONENTE

BEFINDET.

Ser

ARNT

Or,

PEE

INES

STE

LO

FEAR

a

Pe

aC

Ie

CONE

EORTC

TEM

Fe

UTED

BERTONE

De

NS

OE

(@

PASKRIFTEN

SITTER

PA

APPARATEN

SOM

VISAS

SOM

UPPMANING

OM

ATT

APPARATEN

OMFATTAR

EN

INBYGGD

LASERKOMPONENT.

ADVARSEL

-

USYNLIG

LASERSTRALING

VEO

ABNING

NAR

‘SIKKERMEOSAFBAVDERE

EA

UDE

AF

FUNKTION

SROGA

VOSATTELSE

POA

STRALRG

SAITO

GAC

LARDTELON

Et

SAA

AOS

UATE

SRA

VASE:

LAHETTAA

(MAK

YMATONTAS

SRMCLe

WAAAMUISTA

LASEOSATELYA

ADVARSEL

+

USYNLG

LASERGESTRALING

NAR

DENNE OGLEN

ER

APEN

OG

SIKKERMETSSPERREN

ER

UTRORLET

UANGA

UTSETTELSE

FOR

STRAY

(@

DETTE

M/ERKAT

ER

ANBRAGT

SOM

VIST

|

ILLUSTRATIONEN

FOR

AT

ADVARE

BRUGEREN

OM

AT

APPARATET

INDEHOLDER

EN

LASERKOMPONENT.

@

DETTE

M/ERKAT

ER

SOM

VIST

PA

ILLUSTRATIONEN

ANBRAGT

PA

INDERSIDEN

AF

TOPDA-KSLET

FOR

AT

ADVARE

BRUGEREN

OM

AT

YDERLIGERE

FREMTR/AENGEN

VIL

VAERE

FORBUNDET

MED

FARE

FOR

AT

UDSAETTE

SIG

FOR

LASERSTRALING.

ADVARSEL-

BETJENING

AF

ANDRE

KONTROLLER

OG

REGULATORER

ELLER

BENYTTELSE

AF

ANDRE

FREMGANGSMADER

END

BESKREVET

HERI

ER

FORBUNDET

MED

FARE

FOR

USDA:TTELSE

FOR

LASERSTRALING.

VARNIG:

APPARATEN.

INNEHALLER

LASER

KOMPONENT

MED

STRALNING.OVERSTIGANDE

KLASS

1

“ADVARSEL:

USYNLIG

LASERSTRALING

VED

ABNING

NAR

SIKKERHEDSAFBRYDERE

ER

UDE

AF

FUNKTION.

UNDGA

UDSAETTELSE

FOR

STRALING.”

“VAROITUS!

SUOJAKOTELOA

EI

SAA

AVATA,

LAITE

SISALTAA

LASERDIODIN.

JOKA

LAHETTAA

(NAKYMATONTA)

SILMILLE

VAARALLISTA

LASERSATEILYA’.

ADVARSEL:

USYNLIG

LASERBESTRALING

NAR

DENNE

DELEN

ER

APEN

OG

SIKKERHETSSPERREN

ER

UTKOBLET

UNNGA

UTSETTELSE

FOR

STRALING.

i

ig

I

{

4

|

{

q

CLASS

1

LASER

PRODUCT

LUOKAN

1

LASERLAITE

KLASS

1

LASERAPPARAT

}

4

a

Se:

ene

|

|

VRDS-25

2

SPECIFICATIONS

{t

AUDIO

(A-F

4

4)

Number

of

Channels

2

A-FA

AF

vr

VAN

2Fe

VRID

Frequency

Response

1

—

20,000Hz

+

0.3dB

(RCA)

ARBRE

1~20,000Hz

+

0.3dB

(RCA)

20

—

20,000Hz

+

0.3dB

(XLR)

20~20,000Hz

+

0.3dB

(XLR)

Signal

to

Noise

Ratio

Better

than

110dB

(1kHz)

SN

Et

110dB

LE

(EIAJ)

Dynamic

Range

Better

than

99dB

(1kHz)

PAF

RE

9IV

YY

Q9dB

£LECEIAJ)

Harmonic

Distortion

0.0015%

(ikHz)

aaRER

0.0015

%EL

F

(EIAJ)

Wow

and

Flutter

Unmeasurable

(Quartz

accuracy)

DIVIVI—

AE

RR

FAB

OK

IRE

Channel

Separation

Better

than

108dB

(1kHz)

Fe

VRIES

L-Yav

108dBELECEIAJ)

Output

Analog

2.2Vrms

(RCA)

PFOTHA

2.2Vrms

(RCA)

2.2Vrms

(XLR)

2.2Vrms

(XLR)

Digital

0.5Vp-p/

75

Q

(Coaxial)

FIUINAD

0.5V

p-p/

75

Q

(COAXIAL)

-

15dBm

—-21dBm

(Optical)

—

15~-

21dBm

(OPTICAL)

D/A

Converter

1/16

shift

20

bit

4

DAC

DSAIYIN-J—

1/16Y7bk20Ey

-

4DAC

Digital

Filter

8-times

oversampling

25-bit

digital

FVIND

«AW

8HA-IN-tU

TUT

filter

2eEykFYINWI

ANI

Analog

Filter

3rd

order

Butterworth

filter

PIFOAI

ANI

SRNG-D-RAID4

NWI

PICK

UP

(Ex

I

Pu)

Type

Objective

lens

drive,

AX

ML

YAR,

HARE

Ly

optical

3-beam

laser

pickup

WL

VARHAL

2

RIFT

Objective

Lens

2-dimensional

parallel

drive

tik

$e

L

—

Yt

Laser

Type

GaAlAs

type

semiconductor

laser

RE

780nm

Wave

Length

780nm

(257

4—Vvy

b)

SIGNAL

FORMAT

BACAR

44.1kHz

Sampling

Frequency

44.1kHz

Brite

y

Re

1GEwy

bh

YULP/FeUARIL

Quantization

Bit

16-bit

linear/

channel

tieL—b

4.3218Mb/sec

Channel!

Bit

Rate

4,3218Mb/sec

RRA

EFM

Channel

Modulation

Code

EFM

L>-HEAX

CIRC

Error

Correction

CIRC

(A)

GENERAL

ER

100V

AC

50-60Hz

Power

Requirements

120/230V

AC,

50-60Hz

BRED

18W

is

(U.S.A./

Canada/

General

Export

WE

TH

442

x

153

x

344mm

(W

x

H

x

D)

Model)

(Dy

kX-

ABD)

230V

AC,

50Hz

zs

16.5kg

(Europe/U.K.

Model)

Power

Consumption

18

watts

tian

Dimensions

(W

x

H

x

D)

442

x

153

x

344mm

(17-3/8"

x

6”

x

13-9/16"

)

(incl.

foot

base)

.

Weight

(net)

16.5kg

(36-6/16

Ibs)

Standard

Accessories

Wireless

Remote

Control

Unit

RC-596

:

VRDS-

25

(N)

RC-597

:

VRDS-

25

(B)

Battery

(SUM-3,

“AA”,

“R6”

type)

xX

2,

Lock

Key

X

1,

Foot

Base

x

4,

AC

Power

Cord

x

1

@improvements

may

result

in

specification

or

feature

changes

without

notice.

@I{VLAVETY

RC-59E

x

1

@

8

Bik

(#3,

SUM-3)x2

@eox77L—-

fbx)

@7yvbnx-Azx4

@ZRI-—

x1

EIAJid

ASAE

PRL

AIRE

IC

EO

DEBIT

kB

HD

tt.

x

HBS

LOWS,

BELO

Lv

Pte

BETS

CEOS

VET.

|

VRDS-25

|

meses

senda

i

4

|

4

{

i

{

!

i

|

t

Oe

RS

ATT

ae

ee

POD

4

4

4

i

foes

Mare

eae

PONDER

RUT

ORER

ECVE

her

tree

Tannen

3

ADJUSTMENT

AND

CHECKS

aA

the

1.

Replacement

of

the

pickup

assembly

@

Before

removing

the

pickup

assembly

be

sure

to

solder

-bridge

where

indicated

in

the

inset

(Fig.

3-1)

to

prevent

the

laser

diode

from

being

electrostatically

damaged.

After

replacing

the

pickup

assembly,

be

sure

to

unsolder

the

antistatic

bridge.

Or

else

the

laser

diode

does

not

function.

@Before

servicing

the

pickup

assembly

be

sure

to

prevent

electrostatic-inducer

destruction

by

grounding

not.

only

test

equipment

in

use

but

also

yourself

as

shown

in

Fig.

3-2.

:

*

Electrostatic

charge

drastically

shortens

the

operating

life

of

the

laser

diode

or

possibly

results

in

its

destruction.

@During

the

transportation,

mounting

and

dismounting

of

the

assembly,

support

with

your

fingers

at

points

A

and

B

as

shown

in

Fig.

3-3.

Be

particularly

careful

not

to

touch

the

actuator,

photosensor

and

LD

plate

and

do

not

apply

force

to

them.

@Don’t

touch

the

plated

portion

of

the

flat

cable

end

directly

with

fingers.

@Use

care

not

to

break

the

flat

cable.

@Soldering

must

be

done

quickly

at

less

than

30W,

320°C.

@Don’t

disassemble

the

pickup

ass’y.

@Don’t

apply

shock

to

the

pickup

ass’y.

@Don’t

place

the

assembly

in

a

place

subject

to

excessive

dust,

heat

or

moisture.

Earth

ring

(Lead

wire)

Pick-up

case

Chassis

(GND)

Fig.

3-1

Fig.

3-2

2.

Objective

@Laser

beams

are

similar

to

infrared

rays.

Don’t

look

at

the

beams

directly

and

keep

your

eyes

at

least

30cm

.

away

from

them.

@Don’t

touch

the

objective

with

fingers.

@If

objective

becomes

dirty,

playback

will

deteriorate.

To

clean

the

objective,

moisten

a

good

cleaning

tissue,

such

as

made

by

KODAK,

in

isopropyl

alcohol

and

wipe

the

objective

gently.

Wipe

off

and

excess

fluid

with

a

dry

cleaning

tissue.

Earth

1.9747

ASSY

ORR

@EY

IT

VTSASSY

ERT

ERS,

V-V-VAA-

FORE

PER

IED

HD,

HP

RBERS

(Fig.

83-1)

S4HTY)

vy

YLT

DOVEBELTC

RSW,

Ek,

MONUZBSOMONIE

BIBT

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VPEALTCK

FSW.

MADTY

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VELREECAU-¥P-Y41A—

FUBHEL

ER

Ao

@Cry7F

vTASSY

EMORABA,

NEB

ECHR

P-REMS

EH.

AMAT

-

REAR,

SBA

LT<

HW,

(Fig.

3-2)

kLV-F-PYAA—

Fl.

PSA

DS

&

HMMS

IEF

LED,

EtlaBLETOCLAERLTC

RSW.

ORDA.

ROAL,

HEMUOKI,

Fig.

3-30AME

BM

CRATC

HSU,

RIF

7FaL—J7-—,

HRB,

LDF

V—

bbls,

PRANK

OHEMAKLY

LEWEC

KS

OIF

yh

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WSO

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<

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SOMA

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US

:

Resistor

1MQ~10MQ

LD

Plate

Photosensor

Fig.

3-3

2.x

vy

ZAlCDWT

OL

—-F-HlLANMROBAMAHTCT.

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RSW

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4

;

(citi

tie

cs

ceat

Pee

ene

eee

PRO

EOS

Taree

nee

U

3.

Anti-shock

bracket

To

protect

the

laser

pickup

mechanism

from

shocks

and

movement

during

transit,

it

is

secured

by

a

special

anti

-shock

bracket.

Releasing

the

anti-shock

bracket

Before

starting

operation,

be

sure

to

release

this

bracket,

which

is

accessed

from

the

bottom

of

the

player.

To

do

this,

place

the

player

with

its

rear

panel

down

on

a

firm,

smooth

surface

as

shown

in

the

diagram.

Then

insert

the

lock

key

(metal

plate)

provided

into

the

hole

and

turn

it

to

“FREE”.

Transporting

the

player

If

the

player

is

to

be

transported,

the

anti-shock

bracket

should

be

fixed

again.

Before

doing

this,

first

open

the

disc

tray

to

make

sure

that

a

disc

is

not

loaded.

Then,

secure

the

anti-shock

bracket

by

turning

the

screw

to

“LOCK”.

|

VRDS-25

3.

ie

Blo

Ob

T

AAMEBORDOD

5

Ky

IT

yo

TEF

SRO,

RRC

UELTHV

EF.

PREMHES

ESBS,

USD

TAR

LTC

KS.

BRIE

@

Lavi

ABOBREANABIX.

MOKSCHMERELI,

HBOS

BERLE

LIAS,

“FREE”

HUN

380°

HC

HLES.

MATS

ESI

Si

CHE

LTC

RSW,

BREAN,

71

AZ

bUTE—

BAU

CH

4

ATOMOM

ECHO

CE

RHMRLER,

BUT

4

AYbVASAOET.

BREW.

MMS

LIT,

NROS

AC

“LOCK”

HIN

30°

HC

BILEF.

CER

ieee

LS

TCT

CHRELUBETEET.

NEAN

2S

£,

GiREROMAICORMNY

ET

OCC.

EAV

VOLTAGE

CONVERSION

Be

sure

to

remove

the

power

cord

from

the

AC

outlet

before

repositioning

the

voltage

converter

switch.

1.

Locate

the

voltage

selector

on

the

rear

panel.

2.

Using

a

flat-bladed

screwdriver,

set

to

the

appropriate

230

V

or

120

V

position

according

to

your

area.

120V

230V

|

VRDS-25

|

'

/

|

|

sdecttaicenatte

ee

tS

3-1

SERVO

ADJUSTMENT

t+

—-*ig%

SERVO

PCB

v403

BOTTOM

VIEW

Frequency

Counter

PWR

SERVO

PCB

DC

voitmeter

TOP

VIEW

Fig.

3-5

3-1-1

Clock

frequency

adjustment

3-1-1

70

y

TARA

1.

Connect

the

frequency

counter

to

P414.

1.

ARRAY

VY

YE

PA14ICEERET

Z.

2.

Adjust

C416

so

that

the

clock

frequency

is

16.9344

2.

FE

ILIKRE

CO

ARRAS

16.9344MHz

+

50ppm

(

16.9336

MHz

+

50ppm

(16.9336MHz~16.9352MHz)

at

the

stop

MHz~16.9352MHz)

it

SKDI

C416

SHES

S.

mode.

3-1-2

Sled

balance

adjustment

3-1-2

Alby

FNSYV

RARE

=

1.

Adjust

V403

for

OV

potential

between

TP1

(or

P415)

1.

TP1(#EKUMP4I5)O1BEY

(SD)

&E2BE

LY

CGND)

HO

pin

1

(SD)

and

pin

2

(GND).

BMED

OV

IESE

V403

SHAT

ZS,

ne

eee

3-2

AUDIO

ADJUSTMENT

4-747

Fig.

3-6

AUDIO

PCB

|

VRDS-25

i

i

i

|

if

4

:

i

i

j

|

4

i

E|

encanto

been

nena

peepee

arene

ntinanrnunne

nenunnncsmecne

nerntinmten

din

cinbetnn

aati

stninntattunmanenten

VRDS-25

i

3-2-1

Distortion

adjustment

1.

Connect

the

distortion

meter

to

the

LINE

OUT.

2.

Play

the

track

2

(1kHz,

0dB)

of

the

MCD-111.

3.

Set

$101

No.3

to

ON,

and

perform

coarse

adjustment

with

$103(Lch)/$203

(Reh),

then

fine

adjustment

with

V101(Leh)/V201(Rch)

so

that

the

distortion

becomes

minimum.

Specification

:

0.004

%

or

less

(400Hz

HPF

+A

weight

+

20kHz

LPF)

3-2-2

Output

DC

offset

adjustment

1,

Connect

the

DC

voltmeter

to

the

LINE

OUT.

2.

Play

the

track

17

(1kHz,

—60dB)

of

the

MCD-111,

and

adjust

V102(Leh)/V202(Rch)

so

that

the

offset

voltage

becomes

within

0

+

10mV.

3-2-3

Output

level

check

1.

Connect

the

AC

voltmeter

to

the

LINE

OUT.

2.

Play

the

track

2

(1kHz,

0dB)

of

the

MCD-111,

and

check

the

output

level.

Specifications

;

2.2

0.5Vrms

(50kQ

load,

RCA)

2.2+0.5Vrms

(600

Q

load,

XLR)

3-2-4

Frequency

response

check

1.

Play

the

track

3—6

(20Hz~

20kHz,

0dB)

of

the

MCD-111,

and

check

that

output

level

are

within

the

specified

values

with

respect

to

the

1kHz

reference

level.

Specification

:

within

+

0.5dB

3-2-5

S/N

check

roar

.

Play

the

track

7

(non-signal)

of

the

MCD-111,

and

check

that

noise

level

are

within

the

specified

values

with

respect

to

the

1kHz

reference

level.

Specification

:

100dB

or

more

(A

weight)

3-2-6

Channel

separation

check

1.

Play

the

track

8

(L:

1kHz//R

:non-signal)

of

the

MCD-111,

and

check

the

leakage

from

Lch

to

Rch.

2.

In

the

same

way,

play

the

track

10

(R:

1kHz/L:

non

-signal)

of

the

MCD-111,

and

check

the

leakage

from

Rch

to

Lch.

Specification

:

100dB

or

more

(A

weight)

3-2-1

BRRE

roy

_

LINE

OUTMHPEICBRH

EET

5.

.

MCD-111

©

2

#8

(1kHz,

0dB)

+

HUES

3.

3.

S101D3BeONKL,

BRORBLGSEKIIZS103

(Leh)

/$203

(Reh)

CH,

V101

(Loch)

/V201

(Reh)

CHK

HST

So

FARE

0.004

MILE

(400Hz

HPF

+A

weight

+

20kHz

LPF)

iw)

3-2-2

HHADCAIE

vy

bP

1.

LINE

OUT

SHFIZ

DC

RY

bX

-—Y

—-

SRT

So

2.

MCD-1110

17#HB

(1kHz,

—

60dB)

HAL.

7

ey

bE

FEAO

+

10mV

IES

&

5V102

(Leh)

/

V202

(Reh)

eat

TSo

3-2-3

AUAWFry7

1.

LINE

OUTHFK

ACH

A-Y-EBMTS.

2.

MCD-1110

2H

(1kHz,

0dB)

ZBL.

WALA

VERE

tTSo

FAH

:

2.2+0.5Vrms

(50

kQ

Hie,

RCA)

2.2+0.5Vrms

(600

Q

Bf,

XLR)

3-2-4

ARRUSTEF

zy

7

1.

MCD-11103~6

HHH

(20Hz~20kHz,

0dB)

&+BHEL.

AME

AV

(1kHz,

0dB)

ext

LAURAILH

SCE

SHRT

S0

fa:

£0.5dBLIN

3-2-5SINFxr

v7

1.

MCD-111

07

HE

RES)

EBELL

J

PAV

AIRE

AVI

LBUBA

CHS

OE

EMERT

So

$848:

100dBLLE(A

weight)

3-2-6

Fx

VRIWENE-YavFzry7

1.

MCD-111

O8

HHA

(L:

1kHz/R

:

HES)

SBAELY

Rch~

DRNEEAT

So

2.

TAREIz

10

HB

(CR

:

1kHz/L

:

HES)

SBE

LY

Lech

Olin

EHR

Do

FAIS

-

100dBULE

(A.

weight)

4

4

|

|

}

{

|

VRDS-25

PARTS

LIST

SECTION

NOTES

@PC

boards

shown

are

viewed

from

parts

side.

@

Parts

marked

with

*

require

longer

delivery

time.

@

The

parts

with

no

reference

number

or

no

parts

number

in

the

exploded

views

are

not

supplied.

@<As

regards

the

resistors

and

capacitors,

refer

to

the

circuit

diagrams

contained

in

this

manual.

@A\

Parts

marked

with

this

sign

are

safety

critical

components.

They

must

be

replaced

with

identical

components

-

refer

to

the

appropriate

parts

list

and

ensure

exact

replacement.

@

Parts

of

[

]

mark

can

be

used

only

with

the

version

designated.

(J]:

JAPAN

[US]:U.S.A.

[C]:CANADA

[GE]:GENERAL

EXPORT

[E]

EUROPE

[UK]:U.

K.

.

VRDS-25

(N):Gold

Version

VRDS-25(B):Black

Version

:

ate

=

RB

e7UY

SSRRIBRHORENTWIET.

Oc

HMORMISMAMNAFO

DY

KT.

BSDUOTCTH

SKA.

|

ODFRICRBOR

BARU

mBOR

BRlSRRLEA.

eREOHMR,

IVFVU-SEBLTHVET.

BIRR

ZRLT<

HESALY

OAMSRSSSRRCT.

SHAT

SRRLUSS

4

Py

TIEOM

GE

eEAL

TK

EAS

ems

[J]:

JAPAN

[US]:U.

S.A.

[C]:CANADA

[GE]:GENERAL

EXPORT

({E]:EUROPE

[UK]

:U.

K.

VRDS~25(N):Gold

Version

VRDS-25(B):Black

Version

_VRDS-25

4

EXPLODED

VIEWS

AND

PARTS

LIST

SBME

N-YUA

EXPLODED

VIEW-1