Jvc Ca-mxg9bk User manual

JVC.

SERVICE

MANUAL

CA-MXG9BK

(Unit

No.

XL-MXG9BK)

—

a

eo

eh

OPT

GCSE

La

Dad

|

jel

DDCORVEATER

60900000

60

Vi

ayy

GIS

DIGITAL

AUDIO

Aon

manual

is

for

one

part

of

the

titled

model

consisting

of

the

plural

units

as

detailed.

|

Unit

No

Consisted

Part

ofModel

=——'|_—=—

Manual

No.

|

XL-MXG9BK

COMPACT

DISC

PLAYER

|

20436

RX-MXGIBEK

“TUNER

-AMPLIFIER

.

20434

SE-MXG9BK

S.fLA-GRAPHIC

EQUALIZER

|

20435

TD-MXGIBK

i:

|

CASSETTE

DECK

|

20437

:

|

2.

For

instruction

manual,packing

matheriais

and

accessories,

please

refer

to

the

RX-MXG9BK

(S.M.No.20434.)

3.

RX-MXG9BK

is

needed(

for

power

supply

etc.)when

servicing.

Contents

important

for

Laser

Products

+++"

gue

let

Sasa

Sein

Naha

Meee

ser

imenee

1-2

Maintenance

of

Laser

Pickup

Description

of

Major

LStg

ccerccsreeererssestersteneertetstereenes

$23

:

Replacement

of

Laser

Pickup

-rs:sssererre

eee

se

aeeeee

age

eeees

1-14

Internal

Block

Diagrams-of

Other

[Cg

vrrirecerseesetetterereeees

1-8

Block

Diagrams

crrrrrrirtststetee

eres

eeesecereee

tee

teee

se

ereteretereaeas

1-15

Internal

Connection

of

FL

Display

Tube

verses

bros

rvanes

1-9

Schematic

Diagrams

serresestttss

se

ceteceteeesaetee

ee

ereeeeeereeeeweees

4-16

Disassembly

Procedures

<-r-rersrereseeseeeeeeeeeseereeesesenernan

1-10

Printed

Circuit

Boarde:<<i-cseces

mating

tise

cacchccetteusd

sats

me

417

Adjustment

Proceduresg::-:-ss-:ceeceeeeeereeteeeeeeretaceeeearenrenne

1-12

Parts

List

cccccccecccececcet

ces

enenreeenetatetecesseeeebeneeeeseeensersanens

2-1

Flow

of

Functional

Operation

Exploded

View

of

Assemblies

and

Until

TOC

is

Read

crcreteecteceteeee

cesses

eeeeeneeeeee

1-13

Application

points

for

Grease

virescens

9-4

No.

20436

COPYRIGHT

©

1893

VICTOR

COMPANY

OF

JAPAN,

LTD.

Jun.

1993

-

XL-MXG9BK

Important

for

Laser

Products

1.

CLASS

1

LASER

PRODUCT

5.

CAUTION

:

If

safety

switches

malfunction,

the

laser

is

able

to

function.

2.

DANGER:

Invisible

laser

radiation

when

open

and

:

interlock

failed

or

defeated.

Avoid

direct

exposure

to

6.

CAUTION:

Use

of

controls,

adjustments

or

beam.

: :

performance

of

procedures

other

than

those

_

specified

herein

may

result

in

hazardous

radiation

3.

CAUTION:

There.

are

no

serviceable

parts

inside

the

exposure.

it.

Do-

i

ble

t

Li

Unit.

Repl

j

Leser

Unit.

Do

not

disassemble

the

tmver

Uni

ids

7.

CAUTION:

The

compact

disc

player

provides

a

the

complete

Laser

Unit

if

it

malfunctions.

~

Se

¢

ie

ene

laser

diode

of

wavelength

780-790nm

and

optical

4.

CAUTION

:

The

compact

disc

player

uses

invisible

.

output

power

typical

3mW

at

the

laser

diode.

laser

radiation

and

is

equipped

with

safety

switches

:

which

prevent

emission

of

radiation

when

the

drawer

is

open

and

the

safety

interlocks

have

failed

or

are

-

defeated.

It

is

dangerous

to

defeat

the

safety

switches.

VARNING

:

Osynlig

laserstralning

nar

denna

de!

r

ADVARSEL

:

Usynlig

laserstraling

ved

&bning,

nar

Sppnad

och

sparren

4r

urkopplad.

Betrakta

:

sikkerhedsafbrydere

er

ude

af

funktion.

Undga

ej

stralen.

'

+

udsaettelse

for

str&ling.

VARO

:

Avattaessa

ja

suojalukitus

ohitettaessa

olet

:

ADVARSEL

:

Usynlig

laserstraling

ved

apning,

nar

alttiina

nakymattdmialle

lasersdteilytle.

Ala

:

sikkerhetsbryteren

er

avslott.

unnga

utsettelse

for

katso

séteeseen.

:

straling.

REPRODUCTION

AND

POSITION

OF

LABELS

WARNING

LABEL

{Except

forthe

U.S.

4.)

DANGER:

_

invisible

laser

radiation

when

open

and

straling

nar

denna

del

[Interlock

failed

or

defeated.

|

&

Oppnad

och

sparren

Ar

AVOID

DIRECT

EXPOSURE

lurkoppled.

setrakta

ej

TO

BEAM,

{e)

{s}

VARNING:

Osyniling

laser-

stalen.

AADVARSEL:

Usynling

laser-

traling

ved

&bning,

nar

sikkerhedsafbrydere

er

ude

at

funktion.

Uindgdudsat-

else

for

straling.

(d}

VARO:

Avattaessa

ja

suo-

jalukitus

ohitettaessa

olet

aittiina

nakyméttdmalle

lasersatellylle.

Ala

katso

sateeseen.

tt]

CLASS

1

LASER

PRODUCT

CLASSIFICATION

LABEL

_

{Except

for

the

U_S.

A.

and

Canada)

1-2(No.

20436)

XL-MXG9BK

Description

of

Major

LSlIs

M@

=

HD404019RC135

(1C991)

:

Micro-computer

1.

Terminal

Layout

.

(2.

Key

matrix”

wer

KEY

iN

o

KEY

IN

1

KEY

IN2

KEY

IN3

KEY

kevourt

|

Wan

nwmsA

WN

=

|

KEY,

OUT.2

||

EDIT

KEY

OUT

4

MODE

FADE

REPEAT

ee

PLAY

?/

OPEN

/

STOP

/

KEYOUT7

|

pause

|

CLOSE

CANCEL

CLEAR

HD404019RCi35

3.

Description

Ra

Symbol

v0

Functions

and

Operations

Ea

Sym

bol.

lof

Functions.

and

Operations

:

fi~a

|

ao~se

JO

[FL

grid

control

output

FL

grid

control

output

|

35

|

(iso

|

O

Serial

data

eat

for

(C841

Pe

|

wo

fftsegment

contol

output

|

x

|

wo

|

[write

requert

signal

input

[eo

[

cena

[Oro

grid

contol

output

|»

|

_vow

[Ofiarer

on

signal

output

fom7p

sie

[Or

segment

contol output

|

error

[0

[Key

matrix

output

Pie

[we

]=|Non

connection

_|

»

|

rom

[0

[Power

off

signal

ovtpt___—|

Tie

von

[1

[ru

Power

suppiy

|

[eran

[0

[Graphic

mute

signafoutpot

2

a

OC

ae

a

ee

eros,

ox

Key

aks

aa

KEY

OUT3

fe

|

ow

[i

nn

a

ce

|

wid

_

input

KEY

IN3

[a

[ww

[0

fRead

Write

signal

output

Vas

[reser

7

[Reset signal

mput

Sd

|

2s

|

aoew

|

1

|

Close

switch

‘

active

low

iso

|

owe

ff

Test

mode

input

:

connected

to+

5V

|

as

|ornsw

|

1

|

Open

switch:

active

low

tr]

oser

fr

Clock Oscillation

input

Reset

switch

:

active

low

at

the

.

"RESET

SW

~

inmost

position

of

pickup

_

Clock

Oscillation

output

[ar

|

wr

|

[rest

mode

input

isi)

ta

closes

|

2s

|

cose

[0]

Close

signal

output

5s

|

Keyos

»

fO|

Key

matrix

patput

|

29

|

open

fo

Open

signal

output

}s5

|

“orm

|i

|

Compu-iink

signal

input

fo

|

or

ol

Tracking

servo

off

signal

output

ss

|“oeour

fo’

Compu-

iink

signal

output

; .

os

fa

|

ew

fol

Tracking

gain

up

signal

output

|

sx

|

ever

[ofx

Key

matrix:

Selah

Sil

es

—

ee

}

sex

LO

[Clock

output

far

IC841

-

fo[rt

and

control

gutput

[5

Teens

[fe

bettas

at

fool

ie

[ot

eto

(No.

20436)1-3

-

XL-MXG9BK

MYM7121C(IC841)

1.

Outline

YM7121

is

a

C-MOS

LSI

for

signal

processing

and

servo

control

(SVC)

in a

CD

player.

It

is

used

for

the

demodulation

of

the

EFM

signal

from

the

laser

pick

up

,

detection

/

correction

of

the

error

signal

,

signal

processing

in

digital

filtering

,

etc.

and

for

various

servo

controls

(focusing

,

disc

,

tracking

and

feed

servos).

And.

it

contains

digital

interface

which

output

the

audio

digital

signals

in

S-RAM

and

CD-

player.

This

digital

interface

matches

EIAJ

standards.

2.

Top

View

=f

a

eee

-

YM7121C

SLVL

PCO

1/2VPLL

VPLL

RV

CVCK.

VDD

VSS

IC

EFMI

Siice

level

contro!

¥Cco

rock

oneal

oscillator

rock

oneal

contral

TESTE

TEST

,D

TEST

,IN

aoe

EFMX

,

EFMX

>

<

j

Sync

detector

}

stpeton

|

code

a

SUB

,

SBSY

:

SFSY

separation

-

SYEQ

cK

EFM

demodulator

}

stpeton

|

CRC

LE

RCK

|

Disc

Servo

Poaceae

|

DM+

,DM—

go

Pee

eo

a

FCS

ck

Focus

servo

control

FZC,

FRE

[_]

¢——-——L]oin

|

DOuT

#COM

interface

es

Time

difference

Rew

r

calculation

circuit

SVOF

,

TRBK

[_]

a

|

i

wa

TROF

.TRGL,.TRHD

[1]

PscK

; .

Tracking

servo

Ld

.

pLe

anh

=n

control

-

LIS

HF,

TER

[_

|

XIN

ee

servo

FEM+

,

FEM~

,

FEOF

|

Petes

|

clock

ae

ee

}

ee

esclato

sarees

DATA,

DSY

|_|

Timing

control

1

Xrsy

;

EFM

|

ae

P

Senciueed

|

eee

|

buffer

C1,C2Error

detection

/.

a

I

;

correction

eee

processing

ag

CDROM

To~T10

[_]

>

$8,DGL,DGR

ca

|

—

RAM

aren

eae

control

a

L/R,

WDCK

SDO

,

SDSY,

2,

DTFLG

Ct

DAC

OUTPUT

INTERFACE

|_|

DF

00

sDI

LF

Hf]

DF

01

I

L

se

LI

DEP

_

diate

i

DAC

QUTPUT

INTERFACE

}——pel

J

pip

ee

re

el

|

1-4(No.

20436)

XL-MXG9BK.

4.

Terminal

Function

ee

ie

Adequate

time

constant

is

added

to

this

terminal

and

input

the

PCO

output.

This

makes

the

structure

of

clock

reproduce

circuit

by

inner

VCO

circuit.

ioe

ie

a

32

VDD

72

; :

4

TEST.

IN

5

TEST.

E

;

TEST.D

70

7

.4-DSY

8

DATA

|

9

|

cK

|

0.

|

ck

has

4.3218MHz

clock.

|

10~19

|

To~79

|

I

|

This

terminal

is

internal

RAM

test

terminal,

and

connected

GND.

|

22

|

DEP

|

©

|

De-emphasis

is

necessary

when

this

terminal

is

high.

|

23

|

DF

[OT

DIF

is

digital

audio

interface

format

output'

matched

EIAJ

‘standards.

|

24

[soo

[|

SDO

is

a

serial

signal

output

of

¢2

bit

rate

(The

MSB

puts

in

at

first.)

7

|

25

{sor

ft

|

$DI

is

the

input

terminal

of

4times

over

sampling

digital

filter.

it is

usually

connected

with

$DO.

RV

terminal

is

standard

voitage

terminal

of

inner

VCO.

And

capacity

for

stabilizing

is

added

to

this

terminal.

eg

nee

These

are

+5V

power

supply

terminals.

These

terminals

are

for

test.

This

is

the

check

output

terminal,

it:

becomes

high

when.

flame

synchronizing

signal

detected

from

EFM

pattern

coincides

frame

synchronizing

signa!

from

internal

counter.

ve

Not

used.

-”

VSS

_

Poo

Ecuae

ee

POR

0

|

na

ror

rye

Not

used.

34

j

SUB

.

After

detecting

that

SBSY

changes

from

low

to

high

by

|C991,

the

sub-code(P~W)

can

be

output

from

SUB

output

terminal

by

inputting

8

clocks

to

RCK

terminal

at

every

point

where

SFSY

changes

low

to

high.

[weknacrameamaidek

Sd

coROM

cA

Serial

data

output{Right

channel).

Serial

data

output.(Left

channel).

es

Wh?

U0/ 090

23|

58|

|

3

o=3|

aT

4

A

g

c

ow

D

Qa

wa

my

“w

This

terminal

is

connected

to

~COM.

It

is

an

input

terminal

that

carries

the

clock

signal

for

data

transfers.

: :

This

connects

with

microcomputer

and

it is

an

output

terminal

for

switching

data

transmission

mode.

it

enables

to

transmit

data

from

SVC

to

microcomputer

when

R/M

is

“L”

and

from

microcomputer

to

SVC

when

R/W

is

“H“.

;

ih

ime:

This

terminal

is

the

data

output

terminal

connected

to

«COM.

When

R/W

is

low,

data

is

transfer-

red

from

YM7121

to

«COM,

according

to

theSCK

clock

input.

(No.

20436)1-5

XL-MXG9BK:

SLVL

EFMX

rem

NT

cryiaA

1-6(No.

20436)

Function

and

Operation

-

peta

This

terminal

is

aineced

to

»COM.

It

is

a

request

signal

|

which

demands

to

«COM

inputting

the

data

transfer

(YM7121

to

zCOM).

This

ig

a

data

input

terminal

connected

to

.COM.

When

R/W

is

high,

the

data

is

transferred

from

»COM

to

YM7121

according

to

the

SCK

clock

input.

These

terminals

output

the

PWM

to

control

the

speed

of

spindle

motor.

The

speed

of

the

motor

goes

up

when

DM

+

is

high,

and

slows

down

when

DM

-

is

high:

both

terminals

can

not

become

high

simultaneously.

When

tracks

are

being

crossed

during

serches,

the

amplitude

variation

of

the

generated

HF

signal

|

ls.

samoled

at

the

zero

—

cross

point

of

the

tracking

error

signal

TER

and

the

TROF

signal

is

output.

The

level'variations

of

this

signal

turn

the

servo

on

and

off,

greatly

facilitaing

track

acquisition.

KP

+

or

-

KP

~

is

output

to

conduct

tracking,

and

TRHD

is

output

during

tracking

to

cause

generation

of

the

tracking

error

signal.

The

TRGL

signal

is

for

increasing

the

tracking

gain

after

tracking

i

is

completed.

The

FEM+

and

FEM-

are

output

as

high

speed

feed

signals,

and

FEOF

signal

is

output

for

eutang,

the

feed

servo

during

high

speer:|

feed.

TRBK

is

input

to

apply

tracking,

brake

from

outside.

TRGL

becomes

low

with

high

input

and

Soe

inner

control

signal

TBKE

becomes

high.

:

these

terminals

are

used

tor

controlling

the

focus

servo.

The

FCS

is

for

a

leading

signal

of

Focusing

;

the

signal,

generated

shia

the

focus

point

is

achieved,

terminate

the

focusing

operation;

and

FCO

flag

is

Crores

unite

fray

‘by

FRF

signal

generated

when

reflected

light

is

detected.

;

YM7121

needs

initializing

when

power

supply

turn

on.

_tC

will

be

low

more

than

400zs

since

XIN

is

input

clock

with

VDD

standard.

Amplitude

limited,

mutually

anti-phased

signals

are

output

from

EFMX

and

EFMX.

Slice

level

is

controlled

by

these

signals

and

external

amplifier.

SLVL

is

output

amplitude

:

alteration

component

of

both

terminals.

When

integral

circuit

is

connected

to

external,

YM7121.

|

easily

can

control

slice

level.

-

This

terminal

is

input

EFM

signal.(1~

2

Vpp)

This

terminal

outputs

the

phase

difference

when

the

polarity

of

the

ciock

and

the.

EFM

pattern

_

changes.

_

This

terminal

is

input

DC.

velage

matched:

VCO

free

run

eee

(17.

2872

MHz)

This

terminal

outputs

a

half

of

VPLL

input,

and

capacity

for

stabilizing

is

added

to

this

terminal.

XL-MXG9BK

~

WEJCE4501(1C873)

:

D/A

CONVERTER

oe

1.

Outline

2.

Terminal

Layout

_

The

JCE4501

is

a

CMOS

digital-analog

WDPOL

1

converter

with

independent

left

and

right.

&

BeeEe

é

hae

.

RSTB

3

channels.

It

was

developed

for

PCM

CLKSEL

4

digital

audio

equipment.

t

features

pulse

TEST

5

edge

modulation

(PEM)

and

Victor

COM

6

advanced

noise

shaping

(VANS)

for

NSUB

7

resolution

equipment

to

20

bits(0-20kHz)

gach

-

and

a

low

distortion

ratio.

At

JVC,

this

XOUT

10

type

of

digitai-analog

converter

is

called

a

-

pvss

11

DD

converter.

.

NC

12

AVSS

13

OUT2C

14

OUT2B

15

AVDD1

16

AVDD2

17

QUT2D

18

OUT2A

19

AVSS2

20

3.

Block

Diagram

:

CKO3

CKO2.

CKO1

XOUT

XIN

By}OUT

IC

Ba]OUT

1B

DIN1

[ANALOGELOCK

b3]

OUT

1D

i)

POUT

1A

oe

RS]OUT

2A

pck

2

OUT

2D

15]

OUT

2B

Fa]

OUT

2C

WDPOL

BSEL

CKSEL

TEST

STM_

RSTB

4.Description

Fc

7

[wore]

|

Worddata

polarityswitchingpin

(|

21

|

Avss3

[=|

Analoggroundpin3

ase

TTL

aCOMDSbaP

Tormatl:

YMB4iAtormat

[22

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SL

resetpin

(owactvey

|

23

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Jo]

10

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unset

TT]

seis

mode

38a%mode

|

20

favons

||

_

Aniog

power

supplypin3__—|

5

|

test

[1]

Testmodeswitchingpin

(|

25

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|

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Tom

|]

com

board

vottege

fastening

pn

|

26

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used

=]

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board

vokage

fastening

pin]

27

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||

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Hs

[ovoor

|=

biaital

powersupply

pint

|

28

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rep

xn

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ne

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|

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|

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(30

|

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outputpin

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11

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hey

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ground

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|

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Clock

output

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output)

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output

~[3a[pvpp2|-[

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|

ourze

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SSCS

|

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ee

AVDD1

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switching

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stereo,L:left

channel,reversed

polarity

left

channe!

i

|

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37

|

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[1

|

Leftchannel

18-bits

@Fsserialdatainput

_|

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ground

2

|

40

|

WDCK

Word

clock

input

a

is

Fs

efial

data

Pot

20

PeMoutputpin

[38]

“BIND

[|

Right

channel

16-bit

BFS

serial

data

input

rourza

To]

Noted

da

[ck

fe]

Bitctockinputpin

si

i

input

(No:

20436)

1-7

XL-MXG9BK

Internal

Block

Diagrams

of

Other

ICs

HE

M5218AL

(IC

762,781,803)

i

STA341M

(iC761)

:

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M5218AP

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(IC801)

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he,

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:

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f

Reset

‘signal

aaa

tow

level

is

output

when

|

!

-

resetting

;

:

!

:

High

level

is

output

when

cancelling

the

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_

reset:

1

i

,

L

j

1-8(No.

20436)

XL-MXG9BK

Internal

Connections

for

the

FL

Display

Tube

a

ELU0001-140:(FL991)

1.

Grid

Layout

{

EDIT)

"PROGRAM

j

RANDOM

-

FADE

REPEAT

[2-3]

ai

NONSTOP.

|

AUTO

PRGM

MULTI

2.

Connections

er

A

[

atseraove

[71

[1

[wr

|

wr]

ne[we

[ne

[wc]ne

[nc]

ne

[vc

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or

[ro]

s

[ra

a

[renmiwai

no]

24] 25] 26]

27

]26]

29]

50]

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[22

[9

24]35

[5627

[20

[9[["

[2/8]

|]

[necroroos

[rai

[ne

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+s]

r9[s6[ce[]ac

sefoefchiefwrlo

[rere]

|

[|

(Note)

F:Filament

-G:Grid

NP:NoPin

NC:NoConnection

P1~P9:

Anode

3.

Anode

Connedion

Table

Per

tare

rete

ee

Ee

WE

SEN

[a

[amotm>[

>

[x]

tote

b>

be

fale!

f=

momen

fee

Po

ff

fo

poof

|

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[ete

[ole]

ow

fooler]

TT

Prom

fo

a

Pepe)

mar

0

(oo)

eee

MER

as

>

ss

ows

Por

==

2

a

IE}

é

4

(No.

20436)

1-9

XL-MXG9BK

Disassembly

Procedures

—

1.

Removing

the

top

cover

(1)

Remove

the

2

screws

on

both

sides

of

the

top

_

cover

and

the

4

screws

on

the

rear

side.

{2)

Gently

spread

both

sides

of

the

topcoverto

the

outside,

lift

up

the

rear

section,

and

remove

the

top

cover.

-

2.:

Removing

the

tray

”

(1)-Remove

the

top

cover.

_

(2)

Switch

on

the

power

of

RX-MXG9BK

.

Press

the

OPEN

/

CLOSE

switch

to

bring

the

tray

forward

and

with

the

tray

forward,

switch

off

the

power.

(3)

Remove

the

screw

on

the

tray

®.

(4)

Pull

the

tray

toward

the

front

to

move

it.

Note

If

the

power

r

does

not

come

on

due

to

breakdown

or

the,

insert

a

Philips

screwdriver

"

———_-PBO2,PBOS

p90

through

the

hole

at

the

bottom

of

the

front:

panel

and

turn

it

counter-clockwise

to

bring

the

tray

forward

@.

3.

Removing

the

front

panel

assembly

1)

Remove

the

top

cover.

1

é

Remove

the

connectors

(P901)

connecting

with

Sawn

PSD

main

P.C.

Boards.

(3)

Remove

the

screw

©

(4)

Remove

the

3

hooks

©

to

remove

the

front

panel.

.

Clamp

assembly

4.

Removing

the

mechanism

assembly

(1)

Remove

the

top

cover

.

(2)

Remove

the

tray

.

(3)

Remove

the

connectors

(P801,

P802,P803)

.

(4)

Remove

the

2

screws

®

holding

the

clamp

assembly,

then

remove

it.

{5)

Remove

the

3

screws.

®

holding

the

mechanism

Mechanism

assembly

assembly.

;

me

.

1-10(No.

20436)

JVC CA-MXG9BK User manual

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