Philips MC-108, MC-108-B Service manual

Micro System

�

MC108,MC108B/

all

TABLE OF CONTENTS

Page

Handling chip components ..........................................1-1

Technical Specications ..............................................2-1

Service Tool .................................................................2-1

Measurement setup .....................................................2-2

Connections and Controls ................................... 3-1.. 3-2

Set Block diagram .......................................................4-1

Set Wiring diagram ...................................................... 4-2

Disassembly diagram .................................................. 5-1

Main board - Circuit diagram

CD part ..................................................................... 6-1

Tuner part .................................................................6-2

Main borad - Layout diagram..............................6-3 .. 6-4

Display board - Circuit diagram ................................... 7-1

Display board - Layout diagram..........................7-2 .. 7-3

Set Mechanical Exploded view ...................................8-1

Mechanical Service parts list ...................................... 8-2

Electrical Service parts list..................................9-1 .. 9-2

Revisionlist................................................................10-1

©

Copyright 2006 Philips Consumer Electronics B.V. Eindhoven, The Netherlands

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or
transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without
the prior permission of Philips.

Published by LX 0 7 15- Service Audio Printed in The Netherlands Subject to modication

Version 1.2

© 3141 785 30992

1 - 1

1 - 1

ANDLING CHIP COMPONENTS

©

WARNING

All ICs and many other semiconductors are susceptible to
electrostatic discharges (ESD). Careless handling during
repair can reduce life drastically.
When repairing, make sure that you are connected with the
same potential as the mass of the set via a wristband with
resistance. Keep components and tools at this potential.

f

ATTENTION

Tous les IC et beaucoup d´autres semi-conducteurs sont
sensibles aux décharges statiques (ESD). Leur longévite
pourrait être considérablement écourtée par le fait qu´aucune
précaution nést prise à leur manipulation.
Lors de réparations, s´assurer de bien être relié au même
potentiel que la masse de l´appareil et enfileer le bracelet
serti d´une résistance de sécurité.
Veiller à ce que les composants ainsi que les outils que l´on
utilise soient également à ce potentiel.

d

WARNUNG

Alle ICs und viele andere Halbleiter sind empfindlich
gegenüber elektrostatischen Entladungen (ESD).
Unsorgfältige Behandlung im Reparaturfall kann die
Lebensdauer drastisch reduzieren.
Sorgen Sie dafür, daß Sie im Reparaturfall über ein Puls­armband mit Widerstand mit dem Massepotential des
Gerätes verbunden sind.
Halten Sie Bauteile und Hilfsmittel ebenfalls auf diesem
Potential.

ñ

WAARSCHUWING

Alle IC´s en vele andere halfgeleiders zijn gevoelig voor
electrostatische ontladingen (ESD).
Onzorgvuldig behandelen tijdens reparatie kan de levensduur
drastisch doen vermindern. Zorg ervoor dat u tijdens reparatie
via een polsband met weerstand verbonden bent met hetzelfde
potentiaal als de massa van het apparaat.
Houd componenten en hulpmiddelen ook op ditzelfde potentiaal.

i

AVVERTIMENTO

Tutti IC e parecchi semi-conduttori sono sensibili alle scariche
statiche (ESD).
La loro longevità potrebbe essere fortemente ridatta in caso di
non osservazione della più grande cauzione alla loro
manipolazione. Durante le riparationi occorre quindi essere
collegato allo stesso potenziale che quello della massa
delápparecchio tramite un braccialetto a resistenza.
Assicurarsi che i componenti e anche gli utensili con quali si
lavora siano anche a questo potenziale.

©

Safety regulations require that the set be restored to its
original condition and that parts which are identical with
those specified be used.
Safety components are marked by the symbol

i

Le norme di sicurezza estigono che l´apparecchio venga
rimesso nelle condizioni originali e che siano utilizzati i
pezzi di ricambiago identici a quelli specificati.
Componenty di sicurezza sono marcati con

ñ

Veiligheidsbepalingen vereisen, dat het apparaat in zijn
oorspronkeliijke toestand wordt teruggebracht en dat
onderdelen, identiek aan de gespecificeerde, worden toegepast.
De Veiligheidsonderdelen zijn aangeduid met het symbool

s

Varning !

Osynlig laserstrålning när apparaten är öppnad och
spärren är urkopplad. Betrakta ej strålen.

ñ

Advarsel !

Usynlig laserstråling ved åbning når sikkerhedsafbrydere
er ude af funktion. Undgå udsaettelse for stråling.

Varoitus !

Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina
näkymättömälle laserisäteilylle. Älä katso säteeseen !

f

"Pour votre sécurite, ces documents doivent être utilisés par
des spécialistes agréés, seuls habilités à réparer votre
appareil en panne".

ESD

SAFETY

d

Bei jeder Reparatur sind die geltenden Sicherheitsvor­schriften zu beachten. Der Originalzustand des Gerätes
darf nicht verändert werden. Für Reparaturen sind Original­ersatzteile zu verwenden.
Sicherheitsbauteile sind durch das Symbol markiert.

f

Les normes de sécurité exigent que l`appareil soit remis
à l`état d`origine et que soient utilisées les pièces de
rechange identiques à celles spécifiées.
Les composants de sécurité sont marqués

CLASS 1

LASER PRODUCT

©

DANGER : Invisible laser radiation when open.

©

After servicing and before returning the set to customer
perform a leakage current measurement test from all
exposed metal parts to earth ground, to assure no
shock hazard exists.
The leakage current must not exceed 0.5mA.

AVOID DIRECT EXPOSURE TO BEAM.

HANDLING CHIP COMPONENTS

2 - 1

TECHNICAL SPECIFICATIONS

-/93 : 220V

-/93 : 50Hz

2 - 2

SERVICE MEASUREMENT

Bandpass

250Hz-15kHz

e.g. 7122 707 48001

LF Voltmeter

e.g. PM2534

DUT

RF Generator

e.g. PM5326

S/N and distortion meter

e.g. Sound Technology ST1700B

Tuner FW

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

Ri=50

½

Bandpass

250Hz-15kHz

e.g. 7122 707 48001

LF Voltmeter

e.g. PM2534

DUT

S/N and distortion meter

e.g. Sound Technology ST1700B

Frame aerial

e.g. 7122 707 89001

Tuner AM (MW,LW)

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

RF Generator

e.g. PM5326

Ri=50

½

L

R

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

S/N and distortion meter

e.g. Sound Technology ST1700B

DUT

CD RECORDER

Use Audio Signal Disc SBC429 4822 397 30184
(replaces test disc 3)

Use Universal Test Cassette Fe SBC420 4822 397 30071

L

R

LEVEL METER

e.g. Sennheiser UPM550

with FF-filter

S/N and distortion meter

e.g. Sound Technology ST1700B

DUT

LF Generator

e.g. PM5110

Ri=50

½

3 - 1

CONNECTION AND CONTROLS

3 - 2

CONNECTION AND CONTROLS

SET BLOCK DIAGRAM

4 - 1

LA

FM/A MIF

AM'R F

FM'RF

2180 FN

POWE R AMP

27LA46

POWE R SUPP LY

CDMECH

SANYO

DA11B3VF

CD

TC94A58AG454

C2157F

D9258PH

-

T

LCD DISPLAY

ET8816S

KEY BOARD

SWIT CHI NG&V OLUM E

HEF4 052 BT&T C926 0P

SET WIRING DIAGRAM

TR AN SF OM ER

CN9

CN5

CN4

CN103

CN2

CN101

CW4

CN104

CN8

CD D OOR

CNP40 1

CNP4

CNP3

CNP1

AC1

AC2

CNP2

MAIN PCB

DISPLAY PCB

4 - 2