Philips-MC-108-C-Service-Manual电路原理图.pdf

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1、MC108,MC108B,MC108C/ allTABLE OF CONTENTSPageHandling chip components .1-1Technical Specifications .2-1Service Tool .2-1Measurement setup .2-2Connections and Controls .3-1. 3-2Set Block diagram .4-1Set Wiring diagram .4-2Disassembly diagram .5-1Main board - Circuit diagramCD part .6-1Tuner part .6-2

2、Main borad - Layout diagram.6-3 . 6-4Display board - Circuit diagram .7-1Display board - Layout diagram.7-2 . 7-3 Set Mechanical Exploded view .8-1Mechanical Service parts list .8-2Electrical Service parts list.9-1 . 9-2 Revision list.10-1Copyright 2007 Philips Consumer Electronics B.V. Eindhoven, T

3、he NetherlandsAll 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

4、Netherlands Subject to modificationMicro SystemVersion 1.2 3141 785 309921 - 11 - 1HANDLING CHIP COMPONENTS WARNING All ICs and many other semiconductors are susceptible toelectrostatic discharges (ESD). Careless handling duringrepair can reduce life drastically.When repairing, make sure that you ar

5、e connected with thesame potential as the mass of the set via a wristband withresistance. Keep components and tools at this potential.f ATTENTION Tous les IC et beaucoup dautres semi-conducteurs sontsensibles aux dcharges statiques (ESD). Leur longvitepourrait tre considrablement courte par le fait

6、quaucuneprcaution nst prise leur manipulation.Lors de rparations, sassurer de bien tre reli au mmepotentiel que la masse de lappareil et enfileer le braceletserti dune rsistance de scurit.Veiller ce que les composants ainsi que les outils que lonutilise soient galement ce potentiel.d WARNUNG Alle IC

7、s und viele andere Halbleiter sind empfindlichgegenber elektrostatischen Entladungen (ESD).Unsorgfltige Behandlung im Reparaturfall kann dieLebensdauer drastisch reduzieren.Sorgen Sie dafr, da Sie im Reparaturfall ber ein Puls-armband mit Widerstand mit dem Massepotential desGertes verbunden sind.Ha

8、lten Sie Bauteile und Hilfsmittel ebenfalls auf diesemPotential. WAARSCHUWING Alle ICs en vele andere halfgeleiders zijn gevoelig voorelectrostatische ontladingen (ESD).Onzorgvuldig behandelen tijdens reparatie kan de levensduurdrastisch doen vermindern. Zorg ervoor dat u tijdens reparatievia een po

9、lsband met weerstand verbonden bent met hetzelfdepotentiaal 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 scarichestatiche (ESD).La loro longevit potrebbe essere fortemente ridatta in

10、caso dinon osservazione della pi grande cauzione alla loromanipolazione. Durante le riparationi occorre quindi esserecollegato allo stesso potenziale che quello della massadelpparecchio tramite un braccialetto a resistenza.Assicurarsi che i componenti e anche gli utensili con quali silavora siano an

11、che a questo potenziale. Safety regulations require that the set be restored to itsoriginal condition and that parts which are identical withthose specified be used.Safety components are marked by the symboli Le norme di sicurezza estigono che lapparecchio vengarimesso nelle condizioni originali e c

12、he siano utilizzati ipezzi di ricambiago identici a quelli specificati.Componenty di sicurezza sono marcati con Veiligheidsbepalingen vereisen, dat het apparaat in zijnoorspronkeliijke toestand wordt teruggebracht en datonderdelen, identiek aan de gespecificeerde, worden toegepast.De Veiligheidsonde

13、rdelen zijn aangeduid met het symbools Varning ! Osynlig laserstrlning nr apparaten r ppnad ochsprren r urkopplad. Betrakta ej strlen. Advarsel ! Usynlig laserstrling ved bning nr sikkerhedsafbrydere er ude af funktion. Undg udsaettelse for strling.Varoitus ! Avatussa laitteessa ja suojalukituksen o

14、hitettaessa olet alttiinankymttmlle laseristeilylle. l katso steeseen !f “Pour votre scurite, ces documents doivent tre utiliss pardes spcialistes agrs, seuls habilits rparer votreappareil en panne“.ESD SAFETY d Bei jeder Reparatur sind die geltenden Sicherheitsvor-schriften zu beachten. Der Origina

15、lzustand des Gertesdarf nicht verndert werden. Fr Reparaturen sind Original-ersatzteile zu verwenden.Sicherheitsbauteile sind durch das Symbol markiert.f Les normes de scurit exigent que lappareil soit remis ltat dorigine et que soient utilises les pices derechange identiques celles spcifies.Les com

16、posants de scurit sont marqusCLASS 1 LASER PRODUCT DANGER : Invisible laser radiation when open.After servicing and before returning the set to customerperform a leakage current measurement test from all exposed metal parts to earth ground, to assure noshock hazard exists.The leakage current must no

17、t exceed 0.5mA.AVOID DIRECT EXPOSURE TO BEAM.HANDLING CHIP COMPONENTS2 - 1TECHNICAL SPECIFICATIONS-/93 : 220V-/93 : 50Hz2 - 2SERVICE MEASUREMENT Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTRF Generator e.g. PM5326S/N and distortion metere.g. Sound Technology ST1700BTuner FW Use a

18、 bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).Ri=50Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTS/N and distortion metere.g. Sound Technology ST1700BFrame aeriale.g. 7122 707 89001Tuner AM (MW,LW) To avoid atmospheric interferenc

19、e all AM-measurements have to be carried out in a Faradays cage.Use a bandpass filter (or at least a high pass filter with 250kHz) to eliminate hum (50Hz, 100Hz).RF Generator e.g. PM5326Ri=50LRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BDUTCD R

20、ECORDERUse Audio Signal Disc SBC429 4822 397 30184(replaces test disc 3)Use Universal Test Cassette Fe SBC420 4822 397 30071LRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BDUTLF Generator e.g. PM5110Ri=503 - 1CONNECTION AND CONTROLS3 - 2CONNECTIO

21、N AND CONTROLSSET BLOCK DIAGRAM4 - 1LAFM/AMIFAMRFFMRF2180FNPOWERAMP27LA46POWERSUPPLYCDMECHSANYODA11B3VFCDTC94A58AG454C2157FD9258PH-TLCDDISPLAYET8816SKEYBOARDSWITCHING&VOLUMEHEF4052BT&TC9260PSET WIRING DIAGRAMTRANSFOMERCN9CN5CN4CN103CN2CN101CW4CN104CN8CD DOORCNP401CNP4CNP3CNP1AC1AC2CNP2MAIN PCBDISPLA

22、Y PCB4 - 2DISASSEMBLY DIAGRAMDismantling of the Bottom Cabinet1) Remove 4 screws A as indicated to loosen the Rear Cabinet. 2) Remove 2 screws B as indicated to loosen the Bottom Cabinet.Dismantling of the Front Cabinet and Main Board1) Remove 2 screws C as indicated to loosen the Front Cabinet.2) Remove 5 screws D as indicated to loosen the Main Board.ABBOTTOM CAB.CD5 - 1 5 - 1CIRCUIT DIAGRAM - MAIN BOARDCD PART6 - 16 - 1