Philips Mc230mc235b

GB

CLASS 1LASER PRODUCT

MC230/05/21M/22/25/30

TABLE OF CONTENTS Page

Location of pc boards & Version variations ................1-2Technical Specifications .............................................1-3Measurement setup ....................................................1-4Service Aids, Safety Instruction, etc. ..........................1-5Disassembly Instructions & Service positions .............. 2Service Test Programs ...............................................3-1Set Block diagram ......................................................4-1Set Wiring diagram .....................................................5-1Power Board .................................................................. 6Key Board ...................................................................... 7Main Board .................................................................... 8Displsy Board ................................................................. 9Set Mechanical Exploded view & parts list ................. 10Revison List ................................................................. 11

Copyright 2007 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrieval system ortransmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise withoutthe prior permission of Philips.

Published by SL 0712 Service Audio Printed in The Netherlands Subject to modification

Micro System

3141 785 30023

Version 1.3

MC235B/05/12/37/79,MC235/37/79

1-2

LOCATION OF PRINTED CIRCUIT BOARDS

/21 /22 /25 /30 /37

x x xx x ni RDC / ni xuALine OutVideo OutSurround OutSubwoofer OutPower Booster OutDigital OutDigital inMatrix Surround

x x SDRx x sweN

Dolby Pro Logic (DPL)Incredible SurroundKaraoke FeaturesVo xrotceleS egatlECO Power Standby (LCD Display Off) x xECO6 Tuner Board - Systems Non-Cenelec x x xECO6 Tuner Board - Systems Cenelec x xUSB PC LINK

VERSION VARIATIONS:

Type /Versions:

Features &Board in used:

SPEAKER BOARD

POWER B

OARD

DISPLAY BOARD

KEY_A BOARD

MAIN BOARD

OB B_YEKRA

DHEADPHONE BOARD

KEY_C BOARD

FM/AM BOARD

MC230 MC235

/37 /79MC235B

/79 /05 /12

x x x x

xxxx

xx

xxxx x

x

1-3

SPECIFICATIONS

GENERAL:Mains voltage : 120/240V 15% Switchable for /21

120V 10% for /37230V 10% for /22/25240V 10% for /30

Mains frequency: 50/60HzClock accuracy : < 4 seconds per dayDimension centre unit : 250 x 245 x 96 (mm)

Power consumptionActive : 15W for /21/22/25/37/30Standby : < 6W (DEMO mode off)ECO Power Standby : < 1W for /22/25

TUNER:FMTuning range : 87.5-108MHzGrid : 50kHz

100kHz for /21/37IF frequency : 10.7MHz 20kHzAerial input : 75 coaxial

300 for /37Sensitivity at 26dB S/N : < 22dBfSelectivity at 300kHz bandwidth : > 33dBImage rejection : > 20dB [> 25dB]Distortion at RF=1mV, dev. 75kHz : < 3%-3dB Limiting point : < 23.5dBCrosstalk at RF=1mV, dev. 40kHz : > 26dB

MWTuning range : 531-1602kHz

530-1700kHz for /21/37Grid : 9kHz

10kHz for /21/37IF frequency : 450kHz 1kHzAerial input : Frame aerial 18.1HSensitivity at 26dB S/N : < 4.0mV/M [> 3.25mV/M]Selectivity at 300kHz bandwidth : > 20dBIF rejection : > 24dBImage rejection : > 20dB [> 28 dB]Distortion at RF=50mV, M=80% : < 5%

AMPLIFIER:Output powerL & R : 2 x 5W FTC (4, 1kHz, 10% THD)Frequency response within -3dB : 60Hz-14kHzDigital Sound Control (DSC) : Jazz / Rock / Pop / ClassicDynamic Bass Boost (DBB) : Jazz / Rock / Pop / Classic

Input sensitivityAux in (at 1kHz) : 500mV at 600

Output sensitivityHeadphone output at 32 ohm : 15mW 2dB (Max. vol.)

COMPACT DISC:Frequency response within 3dB : 63Hz - 14kHzOutput level (in Vrms) : 500mV, Zout = 100Signal/Noise ratio (A-weighted) : > 67dBADistortion at 1kHz : < 0.02%Channel unbalance at 1kHz : < 2dBChannel separation at 1kHz : > 30dBEmphasis : 15/50 S (switched

automatically by CD10)THD Noise(1kHz) : < 1.5%Outband Attenuation : > 35dB

[....] Values indicated are for /22/25 only.

1-4

LF Generator e.g. PM5110

RecorderUse Universal Test Cassette CrO2 SBC419 4822 397 30069

LEVEL METERe.g. Sennheiser UPM550

with FF-filter

S/N and distortion metere.g. Sound Technology ST1700B

L

R

DUT

or Universal Test Cassette Fe SBC420 4822 397 30071

LEVEL METERe.g. Sennheiser UPM550

with FF-filter

S/N and distortion metere.g. Sound Technology ST1700B

L

R

DUT

CDUse Audio Signal Disc(replaces test disc 3)

SBC429 4822 397 30184

Bandpass250Hz-15kHz

e.g. 7122 707 48001LF Voltmeter

e.g. PM2534DUT

S/N and distortion meter e.g. Sound Technology ST1700B

Frame aeriale.g. 7122 707 89001

Tuner AM (MW,LW)

To avoid atmospheric interference all AM-measurements have to be carried out in a Faradays cage.Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz).

RF Generator e.g. PM5326

Ri=

50

Bandpass250Hz-15kHz

e.g. 7122 707 48001LF Voltmeter

e.g. PM2534DUT

RF Generator e.g. PM5326

S/N and distortion meter e.g. Sound Technology ST1700B

Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).

Ri=

50

Tuner FM

MEASUREMENT SETUP

SERVICE AIDS

Service Tools:Universal Torx driver holder .................................. 4822 395 91019

Torx bit T10 150mm ............................................. 4822 395 50456

Torx driver set T6 - T20 ......................................... 4822 395 50145

Torx driver T10 extended ...................................... 4822 395 50423

Cassette:SBC419 Test cassette CrO2 ................................. 4822 397 30069

SBC420 Test cassette Fe ..................................... 4822 397 30071

MTT150 Dolby level 200nWb/M ............................ 4822 397 30271

Compact Disc:SBC426/426A Test disc 5 + 5A ............................ 4822 397 30096

SBC442 Audio Burn-in Test disc 1kHz ................. 4822 397 30155

SBC429 Audio Signals disc .................................. 4822 397 30184

Dolby Pro-logic Test Disc ...................................... 4822 395 10216

ESD Equipment:Anti-static table mat - large 1200x650x1.25mm ... 4822 466 10953

Anti-static table mat - small 600x650x1.25mm ..... 4822 466 10958

Anti-static wristband .............................................. 4822 395 10223

Connector box (1M) ............................................ 4822 320 11307Extension cable

(to connect wristband to conn. box) .................. 4822 320 11305

Connecting cable

(to connect table mat to conn. box) .................. 4822 320 11306

Earth cable (to connect product to mat or box) .... 4822 320 11308

Complete kit ESD3

(combining all above products) ......................... 4822 320 10671

Wristband tester .................................................... 4822 344 13999

1-5

HANDLING CHIP COMPONENTS

1-6

CLASS 1LASER PRODUCT

GB Warning !

Invisible laser radiation when open.Avoid direct exposure to beam.

S Varning !

Osynlig laserstrlning nr apparaten r ppnad och sprrenr urkopplad. Betrakta ej strlen.

SF Varoitus !

Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiinankymttmlle laseristeilylle. l katso steeseen!

DK Advarse !

Usynlig laserstrling ved bning nr sikkerhedsafbrydere erude af funktion. Undg udsaettelse for strling.

F"Pour votre scurit, ces documents doivent tre utiliss pardes spcialistes agrs, seuls habilits rparer votreappareil en panne".

GB WARNING

All ICs and many other semi-conductors aresusceptible to electrostatic discharges (ESD).Careless handling during repair can reduce lifedrastically.When repairing, make sure that you areconnected with the same potential as the massof the set via a wrist wrap with resistance.Keep components and tools also at thispotential.

F ATTENTION

Tous les IC et beaucoup dautressemi-conducteurs sont sensibles auxdcharges statiques (ESD).Leur longvit pourrait tre considrablementcourte par le fait quaucune prcaution nestprise leur manipulation.Lors de rparations, sassurer de bien tre reliau mme potentiel que la masse de lappareil etenfiler le bracelet serti dune rsistance descurit.Veiller ce que les composants ainsi que lesoutils que lon utilise soient galement cepotentiel.

ESD

D WARNUNG

Alle ICs und viele andere Halbleiter sindempfindlich gegenber elektrostatischenEntladungen (ESD).Unsorgfltige Behandlung im Reparaturfall kandie Lebensdauer drastisch reduzieren.Veranlassen Sie, dass Sie im Reparaturfall berein Pulsarmband mit Widerstand verbundensind mit dem gleichen Potential wie die Massedes Gertes.Bauteile und Hilfsmittel auch auf dieses gleichePotential halten.

NL WAARSCHUWING

Alle ICs en vele andere halfgeleiders zijngevoelig voor electrostatische ontladingen(ESD).Onzorgvuldig behandelen tijdens reparatie kande levensduur drastisch doen verminderen.Zorg ervoor dat u tijdens reparatie via eenpolsband met weerstand verbonden bent methetzelfde potentiaal als de massa van hetapparaat.Houd componenten en hulpmiddelen ook opditzelfde potentiaal.

I AVVERTIMENTO

Tutti IC e parecchi semi-conduttori sonosensibili alle scariche statiche (ESD).La loro longevit potrebbe essere fortementeridatta in caso di non osservazione della pigrande cauzione alla loro manipolazione.Durante le riparazioni occorre quindi esserecollegato allo stesso potenziale che quello dellamassa dellapparecchio tramite un braccialettoa resistenza.Assicurarsi che i componenti e anche gli utensilicon quali si lavora siano anche a questopotenziale.

GBSafety regulations require that the set be restored to its originalcondition and that parts which are identical with those specified,be usedSafety components are marked by the symbol ! .

NLVeiligheidsbepalingen vereisen, dat het apparaat bij reparatie inzijn oorspronkelijke toestand wordt teruggebracht en dat onderdelen,identiek aan de gespecificeerde, worden toegepast.De Veiligheidsonderdelen zijn aangeduid met het symbool !

FLes normes de scurit exigent que lappareil soit remis ltatdorigine et que soient utiliss les pices de rechange identiques celles spcifies.Less composants de scurit sont marqus !

DBei jeder Reparatur sind die geltenden Sicherheitsvorschriften zubeachten. Der Original zustand des Gerts darf nicht verndert werden;fr Reparaturen sind Original-Ersatzteile zu verwenden.Sicherheitsbauteile sind durch das Symbol ! markiert.

I Le norme di sicurezza esigono che lapparecchio venga rimessonelle condizioni originali e che siano utilizzati i pezzi di ricambioidentici a quelli specificati.Componenty di sicurezza sono marcati con !

GBAfter servicing and before returning set to customer perform a leakagecurrent measurement test from all exposed metal parts to earth ground toassure no shock hazard exist. The leakage current must not exceed0.5mA.

PREPARATIONS AND CONTROLS

1-7

Pre

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atio

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Rea

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as

show

n.N

otes

:

For

optim

al s

ound

per

form

ance

, use

the

supp

lied

spea

kers

.

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not c

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than

one

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spe

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than

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tio

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and

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lied.

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o th

e op

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inst

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of t

he c

onne

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equ

ipm

ent

for

deta

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Co

nn

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oth

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qu

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to y

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aud

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ft an

d rig

ht O

UT

ter

min

als

of a

TV,

VC

R, L

aser

Disc

pla

yer,

DV

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CD

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r to

the

AU

X-I

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e:

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e co

nnec

ting

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pmen

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a m

ono

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sin

gle

audi

o ou

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ect i

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AUX

left

term

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ively,

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dou

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cin

ch c

able

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1-9

Impo

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the

U.K

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plu

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appa

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ts, i

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cut

off a

nd a

n ap

prop

riate

plug

fitt

ed in

its

plac

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n bo

ard

shou

ld n

ot b

e gr

eate

r th

an 5

Am

p.

Not

e: T

he s

ever

ed p

lug

mus

t be

disp

osed

of t

oav

oid

a po

ssib

le s

hock

haz

ard

shou

ld it

be

inse

rted

into

a 1

3 Am

p so

cket

else

whe

re.

How

to

co

nn

ect

a p

lug

The

wire

s in

the

mai

ns le

ad a

re c

olou

red

with

the

follo

win

g co

de: b

lue

= n

eutr

al (

N),

brow

n =

live

(L)

.

A

s th

ese

colo

urs

may

not

cor

resp

ond

with

the

colo

ur m

arki

ngs

iden

tifyi

ng t

he t

erm

inal

s in

your

plu

g, pr

ocee

d as

follo

ws:

C

onne

ct t

he b

lue

wire

to

the

term

inal

mar

ked

N o

r co

lour

ed b

lack

.

Con

nect

the

bro

wn

wire

to

the

term

inal

mar

ked

L or

col

oure

d re

d.

Do

not

conn

ect

eith

er w

ire t

o th

e ea

rth

term

inal

in t

he p

lug,

mar

ked

E (o

r e)

orco

lour

ed g

reen

(or

gre

en a

nd y

ello

w).

Befo

re r

epla

cing

the

plu

g co

ver,

mak

e ce

rtai

nth

at t

he c

ord

grip

is c

lam

ped

over

the

she

ath

of t

he le

ad -

not

sim

ply

over

the

tw

o w

ires.

Co

pyri

ght

in t

he

U.K

.R

ecor

ding

and

pla

ybac

k of

mat

eria

l may

requ

ire c

onse

nt. S

ee C

opyr

ight

Act

195

6 an

dT

he P

erfo

rmer

s Pr

otec

tion

Act

s 19

58 t

o 19

72.

No

rge

Type

skilt

finn

es p

ap

para

tens

und

ersid

e.

Obs

erve

r: N

ettb

ryte

ren

er s

ekun

der t

innk

ople

t. D

en in

neby

gde

netd

elen

er

derf

or ik

ke f

rako

ple

t ne

ttet

s

leng

eap

par

atet

er

tils

lutt

et n

ettk

onta

kten

.

For

re

duse

re fa

ren

for

bran

n el

ler

elek

trisk

stt

, ska

l app

arat

et ik

ke u

tset

tes

for

regn

elle

rfu

ktig

het.

Ita

liaD

ICH

IAR

AZ

ION

E D

I C

ON

FO

RM

ITA

Si d

ichi

ara

che

lapp

arec

chio

MC

230,

MC

235

Phili

ps r

ispon

de a

lle p

resc

rizio

ni d

ella

rt. 2

com

ma

1 de

l D.M

. 28

Ago

sto

1995

n. 5

48.

Fatt

o a

Eind

hove

n

Phili

ps C

onsu

mer

Ele

ctro

nics

Philip

s, G

lasla

an 2

5616

JB E

indh

oven

, The

Net

herla

nds

CA

UT

ION

Use

of

cont

rols

or

adju

stm

ents

or

per

form

ance

of

pr o

cedu

res

othe

r th

anhe

rein

may

res

ult

in h

azar

dous

radi

atio

n ex

pos

ure

or o

ther

uns

afe

oper

atio

n.

VAR

OIT

US

Mui

den

kuin

ts

s e

site

ttyj

ento

imin

toje

n s

dn

tai

ase

tust

e nm

uutt

o sa

atta

a al

tist

aa v

aara

llise

lles

teily

lle t

ai m

uille

vaa

ralli

sille

toim

inno

ille.

1-10

PREPARATIONS AND CONTROLSW

AR

NIN

GU

nder

no

circ

umst

ance

s sh

ould

you

try

to

rep

air

the

syst

em y

ours

elf,

as t

his

will

inva

lidat

e th

ew

arra

nty.

Do

not

open

the

sys

tem

as

ther

e is

a r

isk

of e

lect

ric

shoc

k.

If a

fau

lt o

ccur

s, fi

rst

chec

k th

e p

oint

s lis

ted

belo

w b

efor

e ta

king

the

sys

tem

for

rep

air.

If y

ouar

e un

able

to

rem

edy

a p

robl

em b

y fo

llow

ing

thes

e hi

nts,

con

sult

you

r de

aler

or

Phi

lips

for

help

.

Pro

blem

So

luti

on

CD

OP

ER

AT

ION

NO DISC

is

dis

pla

yed

.

Inse

rt a

disc

.

Che

ck if

the

disc

is in

sert

ed u

psid

e do

wn.

W

ait

until

the

moi

stur

e co

nden

satio

n at

the

lens

has

clea

red.

R

epla

ce o

r cl

ean

the

disc

, see

M

aint

enan

ce.

U

se a

fina

lised

CD

-RW

or

CD

-R.

RA

DIO

RE

CE

PT

ION

Rad

io r

ecep

tio

n is

po

or.

If

the

signa

l is

too

wea

k, ad

just

the

ant

enna

or

conn

ect

an e

xter

nal a

nten

na fo

r be

tter

rec

eptio

n.

Incr

ease

the

dist

ance

bet

wee

n th

e M

icro

HiF

iSy

stem

and

you

r TV

or V

CR

.

GE

NE

RA

L

Th

e sy

stem

do

es n

ot

reac

t w

hen

bu

tto

ns

R

emov

e an

d re

conn

ect

the

AC

pow

er p

lug

and

are

pre

ssed

.sw

itch

on t

he s

yste

m a

gain

.

So

un

d c

ann

ot

be

hea

rd o

r is

of

po

or

A

djus

t th

e vo

lum

e.q

ual

ity.

D

iscon

nect

the

hea

dpho

nes.

C

heck

tha

t th

e sp

eake

rs a

re c

onne

cted

cor

rect

ly.

Che

ck if

the

str

ippe

d sp

eake

r w

ire is

cla

mpe

d.

Th

e le

ft a

nd

rig

ht

sou

nd

ou

tpu

ts a

re

Che

ck t

he s

peak

er c

onne

ctio

ns a

nd lo

catio

n.re

vers

ed.

Th

e re

mo

te c

on

tro

l do

es n

ot

fun

ctio

n

Sele

ct t

he s

ourc

e (C

D o

r TU

NER

, for

exa

mpl

e)p

rop

erly

.be

fore

pre

ssin

g th

e fu

nctio

n bu

tton

(

,,

).

R

educ

e th

e di

stan

ce b

etw

een

the

rem

ote

cont

rol

and

the

syst

em.

In

sert

the

bat

tery

with

its

pola

ritie

s(+

/ s

igns

) al

igne

d as

indi

cate

d.

Rep

lace

the

bat

tery

.

Poin

t th

e re

mot

e co

ntro

l dire

ctly

tow

ard

IR s

enso

r on

the

fron

t of

the

sys

tem

.

Th

e ti

mer

is n

ot

wo

rkin

g.

Set

the

cloc

k co

rrec

tly.

Pr

ess T

IMER

to

switc

h on

the

tim

er.

Th

e C

lock

/Tim

er s

etti

ng

is e

rase

d.

Po

wer

has

bee

n in

terr

upte

d or

the

pow

er c

ord

has

been

disc

onne

cted

. Res

et t

he c

lock

/tim

er.

Tro

ubl

esh

oo

tin

g

DISMANTLING INSTRUCTIONS

Dismantling of the Rear Portion

1) Remove 11 screws A and B as indicated to remove theRear Cabinet.

2) Remove 2 screws C as indicated to loosen the SpeakerWire Holder.

3) Remove 2 screws D as indicated to loosen the SpeakerBoard .

4) Remove 2 screws E as indicated to loosen the AUX INjack.

DISMANTLING INSTRUCTIONS

2-1 2-1

Figure 1

Figure 2

1) Loosen 3 screws G each to remove the CD MechanismHolder Bracket.

2) Loosen 7 screws F1 and F2 as indicated to remove theMain Board.

3) Remove 3 screws H as indicated to loosen the Gear MotorModule.

4) Loosen 4 screws I (see Figure 3) to remove the Key_CBoard.

5) Loosen 2 screws J (see Figure 3) to remove the DisplayBoard.

Figure 6

Figure 4

Figure 3

Dismantling of the Front Boards and CD Door

6) Loosen 4 screws K (see Figure 3) to remove the Key_BBoard.

7) Loosen 8 screws L (see Figure 3) to remove the Key_ABoard.

8) Loosen 8 screws M (see Figure 3) to remove the Door EjectLever Bracket Right/Left, then remove CD door.

Repair Hints & Service Positions

Note: The flex cables are very fragile, care should be takennot to damage them during repair. After repair, bevery sure that the flex cables are inserted properlyinto the flex sockets before encasing, otherwise faultsmay occurs.

Service position A

Service position C

Service position B

Figure 5

3-1 3-1

SERVICE TEST PROGRAM

Y

N

Y

N

PROGRAMButton pressed?

PROGRAMButton pressed?

ERASE THEEEPROM

Display shows "EP CLR"

COMPACT DISCTEST

KEY

NEXT

PREV

STOP

PLAY

DISPLAYMESSAGE

-

-

-

-

-

-

-

-

-

ACTION

Disc motor turns clockwise, motor power 50%.

Disc motor turns counter clockwise, motor power 50%

Slide moves outside.

Slide moves inside.

Exit to main menu.

Enter focus servo test.

OKAY ERROR

MOTOR 1

MOTOR 2

SLE OUT

SLE IN

FOCUS

Note : Disc should be available on the tray before entering the Service Test Mode.

VOLUME+Button pressed?

Button pressed?

Y

N

N

Y

Display shows "Key"

KEYTEST

AnyButton pressed?

N

Main Set Key

STANDBY-ON

OPEN*CLOSE

SOURCE-

DBB

BAND

PROGRAM

DISPLAY

32

29

11

17

10

14

18

19

20

24

23

Table 1

Y

N

Y

N

Y

N

VOLUME-Button pressed?

VOLUME-Button pressed?

STOPButton pressed?

DISPLAYTEST

Display shows all display segments and switch allLEDs on.

Display shows alternate display segments & switchalternate LEDs on.

To start service test programPLAY & SOURCEdepressed while

plugging in the mains cord

Display shows theROM version "VER XXX"(Main menu)

VER refers to Version

XXX refers to Software version number of the uProcessor (counting up from 010 to 999)

PLAYVOLUME+

VOLUME-

PREVIOUS( )

NEXT ( )

The corresponding codes according to Table 1 will be displayed

STOP

12

13

- -

-

-

R-C Key

POWER

CD

TUNER

AUX

OPEN*CLOSE

DBB

DISPLAY

12

63

63

63

45

70

52

50

33

32

"VER XXX"

VOL+

VOL-

PREVIOUS( )

NEXT ( )

42

38

PROG

REPEAT

SHUFFLE

PLAY

STOP

CLOCK SET

TIMER

SLEEP

89

MUTE

RDS * NEWS 15

13

17

16

53

26

29

36

REMOTE CONTROLKEY TEST

Note : In Key test mode, if a key on the remote control is pressed, the display shows its corresponding code in track area.

Exit to main menu

REMARK

4-1 4-1

SET BLOCK DIAGRAM

/

5(:2327

5

5-1 5-1

SET WIRING DIAGRAM

POWER BOARD

TABLE OF CONTENTS

Circuit Diagram ................................................................ 6-2PCB Layout ....................................................................6-3

6-1 6-1

6-2 6-2

CIRCUIT DIAGRAM

6-3 6-3

LAYOUT DIAGRAM - POWER BOARDCOMPONENT SIDE

LAYOUT DIAGRAM - POWER BOARDSMD SIDE

7-1

KEY BOARD

TABLE OF CONTENTS

Circuit Diagram ........................................................................... 8-2Layout Diagram-Component ...................................................... 8-3Layout Diagram-SMD ................................................................. 8-3Layout Diagram-Component ...................................................... 8-4Layout Diagram-SMD ................................................................. 8-4

7-1

CIRCUIT DIAGRAM - FRONT BOARD7-2 7-2

LAYOUT DIAGRAM - KEY_A BOARDCOMPONENT SIDE

7-3 7-3

LAYOUT DIAGRAM - KEY_B BOARDCOMPONENT SIDE

LAYOUT DIAGRAM - KEY_A BOARDSMD SIDE

LAYOUT DIAGRAM - KEY_B BOARDSMD SIDE

7-4 7-4

LAYOUT DIAGRAM - KEY_C BOARDCOMPONENT SIDE

LAYOUT DIAGRAM - KEY_C BOARDSMD SIDE

8-1

MAIN BOARD

TABLE OF CONTENTS

IC Block Diagram........................................................................ 8-1Circuit Diagram-Main Part .......................................................... 8-2Component Layout - Main PCB ................................................. 8-3SMD Layout - Main PCB ............................................................ 8-4Layout - Headphone PCB .......................................................... 8-5IC Block Diagram........................................................................ 8-5

8-1

SOUND FADER CONTROL CIRCUITTEA6321

8-2 8-2

MAIN BOARD - CIRCUIT DIAGRAMMCU & AMP. PART

8-3 8-3

MAIN BOARD - CIRCUIT DIAGRAMCD PART

8-4 8-4

MAIN BOARD - CIRCUIT DIAGRAMTUNER PART

8-5 8-5

MAIN PCB - COMPONENT LAYOUT

MAIN PCB - COMPONENT LAYOUT

8-6 8-6

HEADPHONE PCB - TOP LAYOUT

8-7 8-7

HEADPHONE PCB - BOTTOM LAYOUT

FLASH MICROCONTROLLERP89C60X2/P89C61X2--BLOCK DIAGRAM

$FFHOHUDWHG&&38&/.0RGH&/.0RGH

.%\WH&RGH)ODVK

%\WH'DWD5$0

3RUW&RQILJXUDEOH,2V

3RUW&RQILJXUDEOH,2V

)XOO'XSOH[(QKDQFHG8DUW

7LPHU

7LPHU7LPHU

3RUW&RQILJXUDEOH,2V

3RUW&RQILJXUDEOH,2V

&U\VWDORU5HVRQDWRU 2VFLOODWRU

9-1

DISPLAY BOARD

TABLE OF CONTENTS

Circuit Diagram ........................................................................... 9-2Layout Diagram-Component ...................................................... 9-3Layout Diagram-SMD ................................................................. 9-3

9-1

CIRCUIT DIAGRAM - DISPLAY BOARD9-2 9-2

LAYOUT DIAGRAM - DISPLAY BOARDCOMPONENT SIDE

9-3 9-3

LAYOUT DIAGRAM - DISPLAY BOARDSMD SIDE

10-1 10-1

EXPLODED DRAWING

5

5

11

12

12

19

19

28

28

43

19

19

19

19

43

48

71

28

51

53

19

59

61

63

63

71

71

71

71

43

69

43

43

72

28

002

003

004

007

008

009

014

016

023

024

026

027

028

71

029

031

024

027

027

QTYDESCRIPTIONITEM

6SELF-TAPPING SCREW TA/KH 1.4x3.5 mm5

8SELF-TAPPING SCREW TA/KH 2.6x8mm12

17HARDEN SCREW BTTB 2x8 MC19

19HARDEN SCREW BTTB 2.6x8mm MC28

1SELF-TAPPING SCREW TB/WH 3x6mm36

1SELF-TAPPING SCREW TA/WH 2.6x6 mm38

2MACHINE SCREW MS/BH 3x4 mm41

14HARDEN SCREW BTTB 3x12 AB43

2SELF-TAPPING SCREW TA/WH 3x12mm48

1SCREW TA/BWH 3x10mm (HD:12mm)51

2NUT ID:3 OD:5.5 T:2.3mm59

2MACHINE SCREW MS/KH 3x8mm HD 5mm61

4SELF-TAPPING SCREW TA/WH 3x10mm(H D:10mm)63

2HARDEN SCREW TT/PH 3x469

9HARDEN SCREW BTTB 3x8mm AB71

2SELF-TAPPING SCREW TB/KH 3x8 HD 5mm72

MC230 SCREW LIST

41

034

032

037

033

035

036

Only for new gear mechanism 43

038

039

041

Only for Sanyo CD mechanism DA23Z1 andnew gear mechanism.

011

012

013

042

018

017

019

021

022

006

Only for Sanyo CD mechanism DA23Z1

10-2A 10-2A

MECHANICAL & ACCESSORIES PARTSLIST

001 9940 000 00303 CD DOOR LENS /22/25

9940 000 00512 AC CORD BS PLUG 2M /25001 9940 000 00595 CD DOOR LENS /21/30

9940 000 00593 AC CORD SAA APP 2M /30001 9940 000 00599 CD DOOR LENS /37002 9940 000 00292 CD DOOR COVER -LEFT003 9940 000 00293 CD DOOR COVER -RIGHT

004 9940 000 00304 CONTROL PANEL LENS /22/25/37004 9940 000 00596 CONTROL PANEL LENS /21/30006 9940 000 00289 FRONT CABINET /22/25006 9940 000 00318 FRONT CABINET /37006 9940 000 00591 FRONT CABINET /21/30

007 9940 000 00305 SENSOR LENS008 9940 000 00297 POW CD OPEN BUTT /22/25008 9940 000 00321 POW CD OPEN BUTT /21/30/37009 9940 000 00298 VOL +/- BUTTON /22/25009 9940 000 00322 VOL +/- BUTTON /21/30/37

011 9940 000 00279 CD MECHANISM TPP381012 9940 000 00287 SHOCK ABSORBER013 9940 000 00288 SHOCK ABSORBER014 9940 000 00302 FUNCTION BUTTON /22/25014 9940 000 00324 FUNCTION BUTTON /21/30/37

016 9940 000 00299 FUNC BUTTON S/P /22/25016 9940 000 00323 FUNC BUTTON S/P /21/30/37017 9940 000 00589 DRIVE BELT (DIA:38X1MM) 018 9940 000 00296 DRIVER PULLEY GEAR019 9940 000 00295 IDLER GEAR

Note: Only these parts mentioned in the list are normal

021 9940 000 00294 DRIVING GEAR

normal service parts.

022 9940 000 00286 MOTOR 5V023 9940 000 00278 TRANSFORMER 230V /22/25023 9940 000 00316 TRANSFORMER 120V /37023 9940 000 00597 H/TRANSFORMER 120/230V /21

023 9940 000 00598 H/TRANSFORMER 240V /30024 9940 000 00284 RUBBER FOOT026 9940 000 00291 REAR CABINET /22/25/30026 9940 000 00319 REAR CABINET (94V2) /37026 9940 000 00592 REAR CABINET /21

027 9940 000 00283 SPEAKER HOLDER028 9940 000 00307 SPEAKER WIRE HOLDER029 9940 000 00306 STAND UNIT

031 9940 000 00243 AM/FM ANT ASS'Y /21/22/25/30

031 9940 000 00308 AM/FM ANT ASS'Y /37

9940 000 00246 REMOTE CONTROL UNIT

9940 000 00247 SPEAKER BOX UNIT (LEFT)9940 000 00309 SPEAKER BOX UNIT (LEFT) /379940 000 00248 SPEAKER BOX UNIT (RIGHT)9940 000 00311 SPEAKER BOX UNIT (RIGHT)/379940 000 00282 AC CORD VDE APP 2M /21/22

9940 000 00317 AC CORD CUL APP 6FT /37

!

!

!

!

!

!

!

!

ELECTRICAL PARTSLIST

AUX 9940 000 00281 RCA JACK BD 2P U601 9940 000 00366 IC TEA6321CF1 9940 000 00245 BAND PASS FILTER U602 9940 000 00249 IC (ROHM) BA4558F D407 9940 000 00312 VARICAP DIODE /21/30/37 U603 9940 000 00367 IC (PHILIPS) TFA9842JD408 9940 000 00312 VARICAP DIODE /21/30/37 VC402 9940 000 00314 TRIMMER 10PF 6MMFS300 9940 000 00588 GLASS FUSE T800MA/250V/21 VC403 9940 000 00254 TRIMMER 10PF 6MM (WH)

FS301 9940 000 00258 CERAMIC FUSE /22/25/37 VR401 9940 000 00313 SEMI FIXED VRB100K 6MMFS301 9940 000 00585 CERAMIC FUSE 2A/250V /21/30 X201 9940 000 00255 CER RESONATOR 8.4672MHzFS302 9940 000 00259 CERAMIC FUSE /22/25/37 9940 000 00587 SWITCH /21MFS302 9940 000 00586 GLASS FUSE 3.15A/250V /21/30FS303 9940 000 00263 SUBMINIATURE FUSE 100MA/250V

IC1 9940 000 00277 IC (LIBERAL) LM78L05JK401 9940 000 00275 RCA PIN JACK #RCA-125JK601 9940 000 00257 PHONE JACK MSJ-2000(ST)JK602 9940 000 00276 SPK JACK (R/B/R/B)LCD501 9940 000 00268 LCD DISPLAY

LED501 9940 000 00266 LED LAMP 3MM (BLUE)LED502 9940 000 00267 LED LAMP 5MM (BLUE)LED503 9940 000 00265 LED LAMP (MICRO)RF1 9940 000 00256 TUNER (MITSUMI) FE450-G01RL301 9940 000 00264 RELAY

S501 9940 000 00274 TACT SWITCH TSA-064301-100S502 9940 000 00274 TACT SWITCH TSA-064301-100S503 9940 000 00274 TACT SWITCH TSA-064301-100S504 9940 000 00274 TACT SWITCH TSA-064301-100S505 9940 000 00274 TACT SWITCH TSA-064301-100


S511 9940 000 00274 TACT SWITCH TSA-064301-100S512 9940 000 00274 TACT SWITCH TSA-064301-100S513 9940 000 00274 TACT SWITCH TSA-064301-100S514 9940 000 00274 TACT SWITCH TSA-064301-100SR501 9940 000 00272 OPTIC SENSOR /22

SR501 9940 000 00325 OPTIC SENSER /21/30/37SW601 9940 000 00273 MICRO SWITCH 1120B Note: Only these parts mentioned in the list are normalSW602 9940 000 00273 MICRO SWITCH 1120B normal service parts.T302 9940 000 00262 TRANSF. EI-28 AC230V /22/25U101 9940 000 00253 IC (SAMSUNG) KA7808

U102 9940 000 00244 IC P89C60X2BBD /22/25U102 9940 000 00368 IC P87C58X2BBD /21/30/37U103 9940 000 00251 IC (ROHM) BR24L04U201 9940 000 00365 IC (PHILIPS) SAA7379HL CD-18U202 9940 000 00252 IC MOTOR DRIVER D9259

U301 9940 000 00261 IC (LIBERAL) LM78L05U401 9351 772 20557 IC SM TEA5762H/V1 (PHSE) YU501 9940 000 00269 IC ET1621 COB LCD DRIVER

!

!

!

!

!

!

10-2B 10-2B

MECHANICAL & ACCESSORIES PARTSLIST

001 9940 000 00303 CD DOOR LENS /22/25

9940 000 00246 REMOTE CONTROL UNIT

001 9940 000 00595 CD DOOR LENS /21/30

9940 000 00247 SPEAKER BOX UNIT (LEFT)

001 9940 000 00599 CD DOOR LENS /37

9940 000 00309 SPEAKER BOX UNIT (LEFT) /37

002 9940 000 00292 CD DOOR COVER -LEFT

9940 000 00248 SPEAKER BOX UNIT (RIGHT)

003 9940 000 00293 CD DOOR COVER -RIGHT

9940 000 00311 SPEAKER BOX UNIT (RIGHT)/37

004 9940 000 00304 CONTROL PANEL LENS /22/25/37

9940 000 00282 AC CORD VDE APP 2M /21M/22

004 9940 000 00596 CONTROL PANEL LENS /21/30

9940 000 00317 AC CORD CUL APP 6FT /379940 000 00512 AC CORD BS PLUG 2M /25

9940 000 00593 AC CORD SAA APP 2M /30/79

007 9940 000 00305 SENSOR LENS008 9940 000 00297 POW CD OPEN BUTT /22/25008 9940 000 00321 POW CD OPEN BUTT /21/30/37009 9940 000 00298 VOL +/- BUTTON /22/25009 9940 000 00322 VOL +/- BUTTON /21/30/37

011 9940 000 00279 CD MECHANISM TPP381012 9940 000 00287 SHOCK ABSORBER013 9940 000 00288 SHOCK ABSORBER014 9940 000 00302 FUNCTION BUTTON /22/25014 9940 000 00324 FUNCTION BUTTON /21/30/37

016 9940 000 00299 FUNC BUTTON S/P /22/25016 9940 000 00323 FUNC BUTTON S/P /21/30/37

023 9940 000 00278 TRANSFORMER 230V /22/25023 9940 000 00316 TRANSFORMER 120V /37023 9940 000 00597 TRANSFORMER 120/230V /21

023 9940 000 00598 TRANSFORMER 240V /30024 9940 000 00284 RUBBER FOOT026 9940 000 00291 REAR CABINET /22/25/30026 9940 000 00319 REAR CABINET (94V2) /37

Note: Only these parts mentioned in the list are normal

service parts.026 9940 000 00592 REAR CABINET /21

027 9940 000 00283 SPEAKER HOLDER028 9940 000 00307 SPEAKER WIRE HOLDER029 9940 000 00306 STAND UNIT031 9940 000 00243 AM/FM ANT ASS'Y /21/22/25/30031 9940 000 00308 AM/FM ANT ASS'Y /37

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038 9940 000 02822 CD MECHANISM DA23Z1039 9940 000 02816 SHOCK ABSORBER (BLACK)

042 9940 000 04095 FRONT CABINET /22/25

032 9940 000 02814 DRIVE BELT033 9940 000 02808 DRIVER PULLEY GEAR034 9940 000 02807 DRIVING GEAR035 9940 000 02832 MOTOR BRACKET036 9940 000 02818 DOOR MOTOR PULLY

037 9940 000 02815 DC MOTOR 5V

042 9940 000 04096 FRONT CABINET /21M/30

041 9940 000 02817 SHOCK ABSORBER (GREY)

006 9940 000 00289 FRONT CABINET /22/25

006 9940 000 00591 FRONT CABINET /21/30

017 9940 000 00589 DRIVE BELT018 9940 000 00296 DRIVER PULLEY GEAR019 9940 000 00295 IDLER GEAR

021 9940 000 00294 DRIVING GEAR

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022 9940 000 00286 MOTOR 5V!

006 9940 000 00318 FRONT CABINET /37

042 9940 000 04098 FRONT CABINET /37

ELECTRICAL PARTSLIST

AUX 9940 000 00281 RCA JACK BD 2P U501 9940 000 00269 IC ET1621 COB LCD DRIVERCF1 9940 000 00245 BAND PASS FILTER U601 9940 000 00366 IC TEA6321D407 9940 000 00312 VARICAP DIODE /21/30/37 U602 9940 000 00249 IC (ROHM) BA4558F D408 9940 000 00312 VARICAP DIODE /21/30/37 U603 9940 000 00367 IC (PHILIPS) TFA9842JFS300 9940 000 00588 GLASS FUSE T800MA/250V/21 VC402 9940 000 00314 TRIMMER 10PF 6MM

FS301 9940 000 00258 CERAMIC FUSE /22/25/37 VC403 9940 000 00254 TRIMMER 10PF 6MM (WH)FS301 9940 000 00585 CERAMIC FUSE 2A/250V /21/30 VR401 9940 000 00313 SEMI FIXED VRB100K 6MMFS302 9940 000 00259 CERAMIC FUSE /22/25/37 X201 9940 000 00255 CER RESONATOR 8.4672MHZFS302 9940 000 00586 GLASS FUSE 3.15A/250V /21/30 9940 000 00587 SWITCH /21MFS303 9940 000 00263 SUBMINIATURE FUSE 100MA/250V

IC1 9940 000 00277 IC (LIBERAL) LM78L05JK401 9940 000 00275 RCA PIN JACK #RCA-125JK601 9940 000 00257 PHONE JACK MSJ-2000(ST)JK602 9940 000 00276 SPK JACK (R/B/R/B)LCD501 9940 000 00268 LCD DISPLAY

LED501 9940 000 00266 LED LAMP 3MM (BLUE)LED502 9940 000 00267 LED LAMP 5MM (BLUE)LED503 9940 000 00265 LED LAMP (MICRO)RF1 9940 000 00256 TUNER (MITSUMI) FE450-G01RL301 9940 000 00264 RELAY


S506 9940 000 00274 TACT SWITCH TSA-064301-100S507 9940 000 00274 TACT SWITCH TSA-064301-100S508 9940 000 00274 TACT SWITCH TSA-064301-100S509 9940 000 00274 TACT SWITCH TSA-064301-100S510 9940 000 00274 TACT SWITCH TSA-064301-100 Note: Only these parts mentioned in the list are normal

service parts.S511 9940 000 00274 TACT SWITCH TSA-064301-100S512 9940 000 00274 TACT SWITCH TSA-064301-100S513 9940 000 00274 TACT SWITCH TSA-064301-100S514 9940 000 00274 TACT SWITCH TSA-064301-100SR501 9940 000 00272 OPTIC SENSOR /22

SR501 9940 000 00325 OPTIC SENSER /21/30/37SW601 9940 000 00273 MICRO SWITCH 1120BSW602 9940 000 00273 MICRO SWITCH 1120BT302 9940 000 00262 TRANSF. EI-28 AC230V /22/25U101 9940 000 00253 IC (SAMSUNG) KA7808

U102 9940 000 00244 IC P89C60X2BBD /22/25U102 9940 000 00368 IC P87C58X2BBD /21/30/37U103 9940 000 00251 IC (ROHM) BR24L04U201 9940 000 00365 IC (PHILIPS) SAA7379HL CD-18U202 9940 000 00252 IC MOTOR DRIVER D9259

U301 9940 000 00261 IC (LIBERAL) LM78L05U401 9351 772 20557 IC TEA5762H/V1

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9965 100 02009 SPEAKER BOX UNIT (L) /MC235B9965 100 02010 SPEAKER BOX UNIT (R) /MC235B

9965 100 02008 REMOTE CONTROL /MC235B

9965 100 02028 FRONT CAB. ASSY /MC235B

9965 100 02029 CD DOOR ASSY /MC235B9965 100 02044 REAR CAB. ASSY /MC235B/799965 100 02011 AC CORD CUL APP 6FT. /379965 100 02012 UNIT STAND /MC235B

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INFORMATION :

In course of production, the design of CD Door opening mechanism is changed for reliability

improvement. Following parts are changed or added. In the meantime, the CDM is also

changed from TPP381 to SANYO DA23Z1. For more detail please refer to page 10-2 of

Service Manual 3141 795 30022.

032 9940 000 02814 DRIVE BELT

033 9940 000 02808 DRIVER PULLEY

034 9940 000 02807 DRIVING GEAR

035 9940 000 02832 MOTOR BRACKET

036 9940 000 02818 DOOR MOTOR PULLEY

037 9940 000 02815 DC MOTOR 5V

038 9940 000 02822 CD MECHANISM (SANYO) DA23Z1

039 9940 000 02816 CD SHOCK ABSORBER(BLACK)

041 9940 000 02817 CD SHOCK ABSORBER(GREY)

042 9940 000 04095 FRONT CABINET /22/25

042 9940 000 04096 FRONT CABINET /21M/30

042 9940 000 04098 FRONT CABINET /37

The material of the old mechanism no longer be available, if a set of old CD Door design

which cannot be repaired due to lack of service parts, we recommend to replace with a new

set.

REMARKS :

The new CD Door Opening mechanism has been implemented in production from the

following production code respectively onwards.

MC230/21M LM120518011252

MC230/25 LM120520028432

MC230/22 LM120516005743

MC230/30 LM100522003271

MC235/37 LM120511005324

10-3

GENERAL SERVICE INFORMATION

11-1

REVISION LIST

1.0 Manual 3141 785 30020Initial Service Manual released.

1.1 Manual 3141 785 30021In this version, the schematics of CD section and Tuner section are added.

P8-1 : Main Board P8-2 : Circuit Diagram-- MCU and Amplifier Part P8-3 : Circuit Diagram-- CD Part P8-4 : Circuit Diagram-- Tuner Part P8-5 to P8-6: PCB Layouts

1.2 Manual 3141 785 30022In this version, the new gear mechanism and Sanyo CD mechanism are added,refer to the attached picture.

P10-1 : Exploded View updated P10-2 : Mechanical Partslist updated P10-3 : General Service Information added

1.3 Manual 3141 785 30023In this version, MC230/05 & MC235B/05/12/37/79 & MC235/79 have been added.

Documents

Philips Mc230mc235b