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DX-7310

Ref.

No.

OM3507

ONKYO.

SERVICE

MANUAL

COMPACT

DISC

PLAYER

MODEL

DX-7310

Biack

model

230V

AC,

50Hz

120/220V

AC,

50/60Hz

SAFETY-RELATED

COMPONENT

WARNING!!

SPECIFICATIONS

COMPONENTS

IDENTIFIED

BY

MARK

A

ON

THE

Compact

Disc

Player

Model

DX-7310

SCHEMATIC

DIAGRAM

AND

IN

THE

PARTS

LIST

ARE

Signal

readout

system:

Optical

non-contact

CRITICAL

FOR

RISK

OF

FIRE

AND

ELECTRIC

SHOCK.

Reading

rotation:

About

500

-

200

r.p.m.

REPLACE

THESE

COMPONENTS

WITH

ONKYO

PARTS

.

(constant

linear

velocity)

WHOSE

PARTS

NUMBERS

APPEAR

AS

SHOWN

IN

THIS

pe

EE

bem

Leh

mis

|

F

MANUAL

Error

correction

system:

Cross

Interleave

Reed-Solomon

code

D/A

converter:

1

bit

PWM

ACCUPULSE

DA

CONVERTER

MAKE

LEAKAGE-CURRENT

OR

RESISTANCE

MEA-

Sampling

frequency:

352.8

kHz

(Eight-times

SUREMENTS

TO

DETERMINE

THAT

EXPOSED

PARTS

oversampling)

ARE

ACCEPTABLY

INSULATED

FROM

THE

SUPPLY

Number

of

channels:

2

(stereo)

CIRCUIT

BEFORE

RETURNING

THE

APPLIANCE

TO

Frequency

response:

5

Hz

-

20

kHz

THE

CUSTOMER.

Total

harmonic

distortion:

0.004

%

(at

1

kHz)

Dynamic

range:

96

dB

Signal

to

noise

ratio:

100

dB

Channel

separation:

90

dB

(at

1

kHz)

Wow

and

Flutter:

Below

threshold

of

measurabi

hity

Output

level:

2

volts

r.m.s.

Headphone

jack:

I

Optimum

load

impedance

8

to

200

ohms

Power

consumption:

13

watts

Power

supply

rating:

European

and

Australian

mdels:

AC

230

V,

50

Hz

USA

and

Canadian

models:

AC

120

V,

60

Hz

Worldwide

model:

AC

120

V

and

AC

220\

switchable,

50/60

Hz

Dimensions

(W

x

H

x

D):

455

x

120

x

308

mm

(17-15/16"

x

4-3/4"

x

12-1/""

)

Weight:

4.8

kg,

10.6

lbs.

ONKYO

AUDIO

COMPONENTS

_1—

Specifications

and

external

appearance

are

subject

to

chgige

without

notice

because

of

product

improvements.

:

By

Cr

acu

e

TABLE

OF

CONTENTS

Specifications

-

I

Service

procedures

-

2

Caution

on

replacement

of

optical

pickup

2

Protection

of

eyes

from

laser

beem

during

servicing:

3

Laser

warming

labels

-

3

Exploded

view

-

4

Parts

list:

-

5

Mechanism

exploded

view

:

6

Drive

unit

exploded

view:

°

q

Parts

list

.

. °

eo.

*

.

7

Microprocessor

connection

diagram

°

8

Microprocessor

terminal

description

-

9

IC

block

diagram

and

description:

- + *

*

*

:°10~

13

Dissembling

procedure

ae

ee ee

14

Schematic

diagram

mechanism

block

15

Block

diagram

-

-

16

Adjustment

procedure

-17,18

Printed

circuit

board

view

frm

bottom

side

-

>

19,20

Schematic

diagram

°

21.22

Printed

circuit

board

parts

list

-

23,24

e °

*

°

25

Packing

view

°

SERVICE

PROCEDURES

1.

Safety-check

out

After

correcting

the

original

service

problem,perform

the

following

safety

check

before

releasing

the

set

to

the

customer:

Connect

the

insulating-resistance

tester

between

the

plug

of

power

supply

cord

and

chassis.

Specifications:More

than

10Mohm

at

500V.

2.

Voltage

Selector

(Back

panel)

Worldwide

models

are

equipped

with

a

voltage

selector

to

conform

with

local

power

supplies.Be

sure

to

set

this

switch

to

match

the

voltage

of

the

power

supply

in

user's

area

before

turning

the

power

switch

on.

Voltage

is

changed

by

sliding

the

groove

in

the

switch

with

a

screw

driver

to

the

right

or

left.

Confirm

that

the

switch

has

been

moved

all

the

way

to

the

right

or

left

before

turning

the

power

switch

on.

220V

~

120V

~

220V

~

120V

~

at

AC120V

at

AC220V

CAUTION

ON

REPLACEMENT

OF

OPTICAL

PICKUP

The

laser

diode

in

the

optical

pickup

block

is

so

During

repair,carefulley

take

the

following

precautions.

sensitive

to

static

électricity,surge

current

andetc,

(The

following

precautions

are

included

in

the

service

that

the

components

are

liable

to

be

broken

down

parts.)

or

its

reliability

remarkably

deteriorated.

PRECAUTIONS

1.Ground

for

the

work-desk.

3.Grounding

for

the

human

body.

Place

a

conductive

sheet

such

as

a

sheet

of

copper

Be

sure

to

put

on

a

wrist-strap

for

grounding

whose

(with

inpedance

lower

than

1OM1Q.)

on

the

work-

other

end

1s

grounded.

desk

and

place

the

set

on

the

conductive

sheet

so

Be

particularly

careful

when

the

workers

wear

that

the

chassis.

_

synthetic

fiber

clothes,

or

air

is

dry.

2.Grounding

for

the

test

equipment

and

tools.

4.Select

a

soldering

iron

that

permits

no

leakage

and

Test

equipments

and

toolings

should

be

grounded

have

the

tp

of

the

iron

well-grounded.

in

order

that

their

ground

level

is

the

same

the

5.Do

not

check

the

laser

diode

terminals

with

the

ground

of

the

power

source.

probe

of

a

circuit

tester

or

oscilloscope.

DX-7310

PROTECTION

OF

EYES

FROM

LASER

BEAM

DURING

SERVICING

This

set

employs

a

laser.

Therefore,

be

sure

to

follow

carefully

the

instructions

below

when

servicing.

WARNING!!

WHEN

SERVICING,

DO

NOT

APPROACH

THE

LASER

EXIT

WITH

THE

EYE

TOO

CLOSELY.

IN

CASE

IT

IS

NECESSARY

TO

CONFIRM

LASER

BEAM

EMMISION,

BE

SURE

TO

OBSERVE

FROM

A

DISTANCE

OF

MORE

THAN

30cm

FROM

THE

SURFACE

OF

THE

OBJECTIVE

LENS

ON

THE

OPTICAL

PICK-UP

BLOCK.

LASER

WARNING

LABEL

These

labels

are

located

on

the

mechanism.

fi

GER

NVISIBLE

LASER

RADIATION

AND

INTERLOCK

FAILED

OR

ae

DIRECT

EXPOSURE

10

BEAM.

esata

AZARDOUS

LASER

AND

MROMAGNETIC

IC

RADIATION

WHEN

OPEN

SO

INTERLOCK

DEFEATED.

te

aller

NEMENT

LASER

MERT

AVEC

L’ECLENCHEMENT

DE

SECURITE

“CLASS

1

LASER

PRODUCT”

Laser

Diode

Properties

Material:

GaAlAs

Wavelength:

760~800nm

Emission

Duration:

continuous

Laser

output:

max.

0.5mW*

*This

output

is

the

value

measured

at

a

distance

about

1.8mm

from

the

objective

lens

surface

on

the

Optical

Pick-up

Block.

VARO!

AVATTAESSA

JA

SUOJALUKITUS

OHITETTAESSA

OLET

ALTTINA

NAKYMATTOMALLE

LASERSATEILYLLE.

ALA

KATSO

SATEESEEN.

ADVARSEL

USYNLIG

LASERSTRALING

NAR

DEKSEL

APNES

OG

SIKKERHEDSLAS

BRYTES.

seein

DX-7310

ae

7

'°

Th

NN

Yin

_Z_\

=

yt

-

OY

EXPLODED

VIEW

PARTS

LIST

REF

NO.

1

2

4

5

11

14

15

16

17

18

19

20

31

35

41

42

43

45

48

49

51

54

57

38

82

PART

NO.

27110776AY

28191662Y

27100227DY

27122031Y

27122132Y

27122101Y

27190928A

Y

27300750

82143006

838130088

831130088

833430080

831430100

830440109

834430108

28184479AY

838430088

27211689Y

28135199Y

8910301

28125248-6Y

28125249-6Y

28324845BY

28324140Y

28148304

27175292Y

838130088

833430080

2047221012Y

DESCRIPTION

Front

bracket

ass'y

Clear

plate

Chasis

Rear

panel<P>

Rear

panel<W>

Rear

panel<T>

Holder

M

A,

Bushing

3P+6FN(BC)Pan

head

screw

3TTW+8B

Self-tapping

screw

3TTW+8B

Self-tapping

screw

3TTP+8P(BC)

Self-tapping

screw

3TTW+10P(BC)

Self-tapping

screw

4TTC+10P(BC)

Self-tapping

screw

3TTS+10B(BC)

Self-tapping

screw

Top

cover

3TTB+8B(BC)

Self-tapping

screw

Front

Panel

BADGE

Ring

CS

End

cap

L

End

cap

R

Knob,

level

Knob,power

Door

Leg

3TTB+8B

Self-tapping

screw

3TTP+8B(BC)

Self-tapping

screw

Flat

Cable

REF

NO.

PART

NO.

L901

230915

P901

293175

Y

T901

2300988B

Y

2300990B

Y

Ul

1H260522-1Y

U2

1H260523-1Y

U3

1H260524-1Y

U4

1H260525-1Y

US

1H260526-1Y

U6

1H260527-1Y

1H260522-1AY

U7

1H260528-1Y

Z1

24800009C

<P>:230V

model

only

<W>:World

wide

model

only

<T>:Taiwanese

model

only

DESCRIPTION

A\

RBD25HA-00,Core

A\

AS-CEE,

AC

CORD

A\

NPT-1199P,

Power

Transformer<P>

A

NPT-1199DG,

Power

Transformer,

<W>

NAAR-5222-1,Main

circuit

PC

board

ass'y

NADIS-5223-1,Display

circuit

PC

board

ass'y

NAAF-5224-1,Headphone

amplifier

PC

board

ass'y

NAAF-5225-1,Headphone

terminal

PC

board

ass'y

NAPS-5226-1,Power

switch

PC

board

ass'y

NAPS-5227-1,Power

transformer

PC

board

ass'y<P>

NAPS-5227-1A,Power

transformer

PC

board

ass'y,

<W>

NASW-5228-1,

Voltage

selector

switch

PC

board

ass'y,

<W>

NCD-130S,CD

Mechanism

ass'y

:

THE

COMPONENTS

IDENTIFIED

BY

MARK

A\,

ARE

CRITICAL

FOR

RISK

OF

FIRE

AND

ELECTRIC

SHOCK.

REPLACE

ONLY

WITH

PART

NUMBER

SPECIFIED.

-DX-7310

MECHANISM-EXPLODED

VIEW

PARTS

LIST

PART

NO.

REF.NO.

~

Oo

OPI

auUsb

WN

|

NO

ce

ee

ed

ouwunmnrn

UU

bf

WwW

WN

24840060

24822014

248

10020

24840061

24830003

24832004

24836013

248

10024

24802012

24820023

24840062

24840075

24802013

248

10021

24840063

DESCRIPTION

Tray

Stopper

Gear

cover

Tray

gear

Chucking

plate

2.6TTW+7B,Sclf-tapping

screw

Chucking

yoke

Magnet

Damper

Chucking

P

Sub

chassis

Spring

Screw

with

washer

KSM-2401,Pickup

drive

unit

CD

servo

pc

board

ass'y

Main

chassis

2.6TTW-+16B,Self-tapping

screw

Drive

gear

Control

cam

REF.NO.

PART

NO.

21

22

23

24

25

26

27

28

101

102

103

104

105

106

107

108

109

110

il4

24840064

25055369

24840066

24840067

24810022

248

10025

24816008

24828006

24836014

24840068

24822015

24820024

24824003

24110011

248

10023

24802014

24804012

82112003

DESCRIPTION

Leafswitch

NPLG-5P352,Plug

Loading

motor

pce

board

Loading

motor

Middle

gear

Loading

Belt

2.6B+2.5F

Screw

Sled

shaft

Insulator

2X

5,Special

screw

Plate

S

Spring

Center

ring

KSS-240A,Optical

pickup

Wheel

Chassis

Motor

gear

ass'y

2P+3FN,Pan

head

screw

DRIVE

UNIT

10]

REMOVEMENT

OF

TRAY

ASS’Y

Remove

the

top

cover.

Turn

the

locked

screw

to

the

clockwise

to

release

the

lock

of

gear.(Refer

fig.

1)

Pull out

the

tray

ass'y.

Remove

the

stopper.(Refer

fig.2)

Press

the

tray

stopper

to

the

arrow

mark

direction

and

remove

the

tray

ass'y.

Stopper

Front

Panel

ala

Tray

Tray

stopper

Clear

Plate

stopper

|

J

|

4

=

=F

Tray

Chassis

DX-7310

MICROPROCESSOR

CONNECTION

DIAGRAM

CXP50116-527

(Microprocessor)

™

=4

rw

i}

2%

io)

—

£

xs

B

8O

9

a

|

w|ul>|si>l2

Xly|

>|]

Slo]

El]

Ble

Lolols|

mia

3/3171

+]

Ot+]

x]

ppafarafafafa

T

i

Q702

REMOTE

CONTROL

SENSOR

BUFFER

5

RI

IN/OUT

8-BT-l25GK

FL

TUBE

Leet

|

&

>|

f>i>

=

SEARCH

3]

|e

ele

gaa]

DISP

REP

EDIT

ok

ook

ot

2

0

OPCL

PSE

STP

PLY

yp

ok

ook

Ook

oof

of

DWN

MEM

ADI

4,

FR

CLR

SHT

FF

wneExT

—

okt

2b

ok:

ee

ak

DX-7310

Symbol

Description

ee)

DFTSW

Connect

to

pickup

block.

2~4

Al~A3

Not

used.(Open

FL

tube

segment

output.

FL

tube

grid

output.

Synchronizing

signal

detection

of

sub

code

frame.

Not

used.(Open

20

21~28

9

1G~

8G

SCOR

>

T

Reset

input

terminal.

Reset

at

the

low

level.

Wr

1h

+

|+

[x

|+

35~41

ADO~AD6

AD

input

terminal.

Connect

to

the

operation

key.

W

1)

[KO [OO

1)

[ho

oa)

Chip

enable

terminal.

eo

Q

Zz

oO

|

DATA

Serial

data

output

of

command

to

signal

processor

IC.

Serial

data

input

of

sub

code

Q

from

signal

processor

IC.

SQCK

Serial

transfer

clock

of

sub

code

Q

to

signal

processor

IC.

K

Serial

transfer

clock

of

command

to

signal

processor

IC.

Serial

transfer

latch

to

signal

processor

IC.

Muting

ON/OFF

control

output

terminal.

ON

at

the

high

level.

Tray

open/close

control

output.

U

OPEN

CLOSE

ff

Mm

iA

[AH

TNH

os

Tray

open/close

control

output.

Not

used.(Open

Not

used.(Open

|

Sense

input

from

signal

processor.

+

ENS

O

INSW

OUTSW

Tray

open

operation

completion

signal.

MD

NRSCO

NRSCI

Focus

OK

input.

AW

Tray

close

operation

completion

signal.

Inhibiting

signal

of

di

ut

of

signal

processor.

NRSC

output.

NRSC

input.

Remote

control

signal

input

terminal.

Gi

63~70

DO~

D7

Not

used.(Open

Ground

terminal.

XTAL

|

System

clock

output

terminal.

+

C4M

+

<

B

in

LA

ae

S$

|<

|x

|<

Lo

System

clock

input

terminal.

ms

Ne

ee

ee

ee

ON

tr

fin

[ny

oO

~

S)

nN

©

joo

[a

nN

Negative

power

supply

terminal

for

FL

tube.

Optical

pickup

control

output

terminal.

ON

at

the

low

level.

Not

used.(Open

Not

used.(Open

Not

used.(Open)

ora)

=

1)

y°)

i

|

Ke)

|

.

DX-7310

CXD2500BQ

(Digital

Signal

Processor)

o

UO

a.

>

©)

REGISTER

SYNC.

PROTECTOR

—~10—

PRIORITY

ENCODER

AUTO

SEQUENCER

PROCESSOR

yDAO!~i6

9

MUTE