NAD 5240 Manuale utente

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_

MANUAL

i)

5220

COMPACT

nian

PLAYERS

NAD

5240/5220

SERVICE

MANUAL

NOTICE:

This

manual

covers

all

versions

A:

North

America

C:

Canada

_E:

Europe

&

Others

U:

UK

Y:

Australia

TABLE

OF

CONTENTS

PAGE

SR

ECIPICA

TIONS

mis

%

cut

hv

en

a

ote

en

neues

add

Rad

ees

9

DISASSEMBLY.

INSTRUCTIONS

«Misc

tsat

iol

saianden

$e

(ad

meniyacad

3

BLOC

DING

RA

Mie)

htt

ties

ce’

A

natess

lence

call

nas

hat

ee

ei

oan

7

IG

TERMINAL

FUNCTION:

ot.cccsn

cotati

saws

a

cat

pate

te

Ph

wecme

ee

8

AB

IIS

TIME

NTS

ite

coc

saree

uted

Ue

at

teas

baat

ahah

pee

eats

ate

14

ELECTRICAL

PARTS

LOCATIONS

AND

WIRING

DIAGRAM...........-5:

16

SCHEMATIC

DIAGRAM:

4

6is

cucu

ee

panl

wet

tees

taiwan

seus

17

MECHANISM

EXPLODED:

VIEWO

Sa

Mache

ts

aeautanwsee

ue

ye

eure

de

acen

ata

d

wea

20

CABINET

EXPLODED

VIEW

ce.

2

scdik

apts Seen

k

aoe

ee

RNA:

21

PARTS

LIST.

54

eset

stone

Vawws

Pale

adele

a

We

bea

Veit

ae

Ue

Sel

SS

22

REAR

PANEL

1.

Output

Jacks.

a.

Fixed

b.

Variable

(5240

only)

2.

AC

Line

Cord.

la.

1b.

CAUTION

RISK

OF

ELECTRIC

SHOCK

DO

NOT

OPEN

CAUTION

TO

REDUCE

THE

RISK

OF

ELECTRIC

SHOCK,

OO

NOT

REMOVE

COVER

(OR

BACK)

NO

USER-SERVICEABLE

PARTS

INSIDE

REFER

SERVICING

TO

QUALIFIED

SERVICE

PERSONNEL

FIXED

VARIABLE

OUTPUT OUTPUT

FRONT

PANEL

5220

Front

Panel

.

Power

On/Off.

.

Disc

Drawer.

.

Open/Close.

.

Play/Pause.

.

Reset.

RY

.

Skip

Forward

/Back.

TIMER

PLAY

a

.

Scan

Forward/Back.

Disptay

Selector.

.

Memory.

oPLay

MORTEPEAT

PLAY

.

Repeat.

.

CDR

(Controlied

Dynamic

Range;

5240

only).

.

Status

Indicators.

.

Timer

Play

(5220

only).

POWER

am

—_

a

at

ot

WNBA

COONAN

ASON=

Compact

Disc

Player

5240

TIME

REMAIN

(Iw

aH

PAUSE

Hi

Cc.

O105

OPEN

CLOSE

PLAY

PAUSE

1

2

3

4

5 8

9

10

11

7

SPECIFICATIONS

Type:

Quantization:

Channels:

Frequency

response:

Dynamic

range:

Total

harmonic

distortion:

Channel

separation:

Wow

and

flutter:

Output:

Pickup:

Track

search:

Power

consumption:

Dimensions:

Weight:

Compact

Disc

Player

with

optical

pickup

16

bit

linear

2

channels

(stereo)

5

Hz

—

20

kHz

+0.5

dB

94

dB

0.004%

(1

kHz)

90

dB

Unmeasu

rable

2.0

Volts

Semiconductor

laser

By

track

number

13

Watts

340(W)

x

57.5(H)

x

309.5(D)

mm

2.9

kg

DISASSEMBLY

INSTRUCTIONS

TOP

COVER

REMOVAL

1.

Remove

two

screws

@)

from

top

cover

side

boards

and

four

screws

(B)

from

rear

side,

and

the

top

cover

will

be

removed,

TRAY

PANEL

REMOVAL

1.

Remove

top

cover.

2.

Lift

up

mechanism

assembly

clamper

lever

©

and

pull

out

disc

tray

(0)

forward

by

your

hand.

3.

Release

two

hooks

©)

on

tray

panel,

and

the

tray

panel

will

be

removed.

Disc

Tray

%,.

-

Cam

Gear

©

Clamper

Lever

Tray

Panel

FRONT

PANEL

REMOVAL

(with

Display

P.C.

Board)

1.

Remove

top

cover

and

tray

panel.

2,

Remove

four

screws

(F)

and

@

from

both

side

and

three

screws

(H)

from

bottom

side,

and

the

front

panel

will

be

removed.

)

MECHANISM

ASSEMBLY

REMOVAL

1.

Remove

tray

panel,

2.

Remove

five

screws

and

GQ),

and

two

connectors

,

and

then

the

mechanism

assembly

will

be

re-

moved,

*

Clamper

lever

removal

1.

Push

clamper

lever

hook

to

arrow

©

direction

with

minus

driver,

and

the

clamper

lever

will

be

removed

by

pulling

it.

2.

\f

hook

is

broken,

use

screw

with

washer

™)

(63

x

8mm)

as

illustrated.

)

sf

DISC

TRAY

REMOVAL

1.

Lift

up

clamper

lever

with

disc

tray

in

the

deepest

side

and

‘pull

disc

tray

until

it

stops.

Pull

disc

tray

with

mechanism

main

chassis

hook

pushed

to

arrow

(N)

direction,

and

the

disc

tray

will

be

removed.

*

Disc

tray

mounting

procedure

on

mechanism

1.

Insert

disc

tray

with

cam

gear

turned

to

counter-

clockwise

direction

©

fully,

and

the

disc

tray

can

be

mounted,

CAUTIONS

OF

DISC

TRAY

REMOVAL

1,

There

are

two

types

of

mechanism

chassis,

differing

in

@

and

()

as

shown

in

Figure

B.

2.

In

the

first

type

®

(Figure

B),

the

disc

tray

will

be

removed

by

pulling

the

disc

tray

forward.

3.

In

the

2nd

type,

O

in

Figure

B

is

hooked

at

W

as

shown

in

Figure

A,

4.

Two

remove

the

disc

tray

in

the

2nd

type

push

®

(Figure

A)

to

the

arrow

direction.

And

the

disc

tray

will

be

removed

as

shown

in

@)

(Figure

A).

Figure

A

Figure

B

LASER

PICKUP

REMOVAL

1.

Short-circuit

Laser

Pickup

P.C.

Board

pattern(P).

2.

Remove

six

screws

and

®)

,

and

two

connectors

(S),

and

the

laser

pickup

will

be

removed.

(S)

Connectors

CAUTION

ON

LASER

PICKUP

REMOVAL

1.

When

removing

laser

pickup,

solder

and

short-circuit

terminals

to

protect

laser

pickup

from

damage

which

may

be

caused

during

the

removal.

2.

Disconnect

leads

from

connector

after

soldering

is

completed.

Do

not

touch

the

pickup

terminals

with

your

hand.

_

When

mounting

laser

pickup,

connect

the

leads

to

connector

before

unsoldering

the

solder

used

to

short-circuit.

wo

CAUTIONS

ON

LASER

PICKUP

REPLACEMENT

_

When

mounting

a

new

laser

pickup,

first

connect

the

leads

to

connector

and

then

unsolder

the

solder

used

to

protect

laser

diode

on

P.C,

Board.

Use

a

soldering

iron

grounded

(or

leakageless

iron).

Cover

working

bench

with

conductive

mat

grounded.

*

Before

proceeding

job,

always

touch

the

conductive

mat

or

ground

lead

with

your

both

hands

to

discharge

electric

charges

developed

on

your

body.

=

e

Solder

the

pattern

shown

in

ilustration

before

disconnecting

connector

and

leads.

DISC

TABLE

MOUNTING

Insert

spacer

which

was

packed

with

motor,

between

main

chassis

and

disc

table.

Push

center

of

disc

table

until

it

touches

spacer.

Notes:

1.

When

mounting

disc

table,

take

care

of

disc

table

not

to

touch

pickup

or

disc

tray.

2.

Mount

disc

table

in

parallel

with

main

chassis.

3.

There

are

three

kinds

of

spacer

jigs

corresponding

to

the

motor

assemblies

or

three kinds

of

pickups.

Check

your

pickup

and

order

the

motor

assembly

you

want.

wf

Disc

Table

CD

am

Spacer

Jig

Alle

13

+0.1mm

|

Main

chassis

(5240)

3

Beam

Pick

Up

DAC

TD6720N

OUTPUT

AMP

{iF

fia

Circuit

CIRCUIT

|

re

eer

ea

|

NEW

©

©)

DAC

5240

(S/H

OUT)

4

Servo

status

a

Sig’

Det’

ci

&

C2

Error

Correction

TC92Z0IAF

-

q

{

-LD-APC

|

|

L

Circuit

|

ra4

—-—---

|Phase

Comp}

I

(N

Correction

Timing

CORRECTION

Generotor

Servo

Status

Signal

Processor

Servo

Control

Signat

Processor

Osta

strobe

{Digital

PLL)

Sync

Sepa’

Subcode

EFM

Demodu’

&

Q

CLV

Control

CD

Bus

Control

Butter

Sabeoee

PICK-UP

MOTOR

I

4

ee

t--74

|

interface

|

———

TC9200AF

DISC

MOTOR

2«

x

8bit

RAM

VARIABLE

VOLUME

out

CXKS8I6M

VARIABLE.

Poti

ee

ee

a

1

1

|

5

Micro

LOADING

MOTOR

post

SS

4

1

chip

Micro

Computer

bea

|

ees

eee

7

TMP4270N-9401

Display

‘

ow

TMP47C

420AF-8612

ey

Fe

(5240)

(5240)

Remote

Control

Receiver

BXI407

INVYSOVIG

HO01E8

IC

TERMINAL

FUNCTION

TC9154AP

Vs

L-

OUT

|

Lo

INI

A-GND

L-IN2

L-OUT

2

ST

GNO

18

BIT

SHIFT

REGISTOR

18

17

1615

14

13

121

109

87654

3

2

I

7

BIT

LATCH

CIRCUIT

CK

OQ

x

6

BIT

LATCH

CIRCUIT

6

BIT

LATCH

CIRCUIT