Philips-DVD-781-Service-Manual电路原理图.pdf

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1、G31Copyright 2001 Philips Consumer Electronics BPAVCAll 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 otherwisewithout the prior permission of Philips.Published by Jian

2、feng Liu 0170 BPAVCDVD707/751/781/782CLASS 1LASER PRODUCTCOMPACTDIGITAL AUDIODVD PLAYERService ManualServiceServiceServiceGBCONTENTSPageVersion: 1.05 Dismantling instruction and exploded view . 41 Technical specifications . 22 Warnings . 23 Service hints . 34 Revision information . 31 Instruction fo

3、r use . 307 Electrical diagrams and print-layouts . 88 Spare parts list DVD730K/691 . 189 Spare parts list DVD730K/751 . 2210 Spare parts list DVD730K/781 . 26Power board. .8MPEG board. . 10Front board. . 166 Block- and wiring diagram . 6 3122 785 11880AppendixAll ICs and many other semiconductors a

4、re susceptible toelectrostatic discharges (ESD). Careless handling duringrepair can reduce life drastically.When repairing, make sure that you are connected with thesame potential as the mass of the set via a wristband withresistance. Keep components and tools at this potential.Tous les IC et beauco

5、up dautres semi-conducteurs sontsensibles aux dcharges statiques (ESD). Leur longvitepourrait tre considrablement courte par le fait 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

6、 rsistance de scurit.Veiller ce que les composants ainsi que les outils que lonutilise soient galement ce potentiel.Alle ICs und viele andere Halbleiter sind empfindlichgegen ber elektrostatischen Entladungen (ESD).Unsorgf ltige Behandlung im Reparaturfall kann dieLebensdauer drastisch reduzieren.So

7、rgen Sie daf r, da Sie im Reparaturfall ber ein Puls-armband mit Widerstand mit dem Massepotential desGer tes verbunden sind.Halten Sie Bauteile und Hilfsmittel ebenfalls auf diesemPotential.Alle ICs en vele andere halfgeleiders zijn gevoelig voorelectrostatische ontladingen (ESD).Onzorgvuldig behan

8、delen tijdens reparatie kan de levensduurdrastisch doen vermindern. Zorg ervoor dat u tijdens reparatievia een polsband met weerstand verbonden bent met hetzelfdepotentiaal als de massa van het apparaat.Houd componenten en hulpmiddelen ook op ditzelfde potentiaal.Tutti IC e parecchi semi-conduttori

9、sono sensibili alle scarichestatiche (ESD).La loro longevit potrebbe essere fortemente ridatta in caso dinon osservazione della pi grande cauzione alla loromanipolazione. Durante le riparationi occorre quindi esserecollegato allo stesso potenziale che quello della massadelpparecchio tramite un bracc

10、ialetto a resistenza.Assicurarsi che i componenti e anche gli utensili con quali silavora siano anche 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 sy

11、mbolLe norme di sicurezza estigono che lapparecchio vengarimesso nelle condizioni originali e che siano utilizzati ipezzi di ricambiago identici a quelli specificati.Componenty di sicurezza sono marcati conVeiligheidsbepalingen vereisen, dat het apparaat in zijnoorspronkeliijke toestand wordt terugg

12、ebracht en datonderdelen, identiek aan de gespecificeerde, worden toegepast.De Veiligheidsonderdelen zijn aangeduid met het symboolVarning ! Varoitus ! Osynlig laserstr lning n r apparaten r ppnad ochsp rren r urkopplad. Betrakta ej str len.Advarsel !Usynlig laserstr ling ved bning n r sikkerhedsafb

13、rydere er ude af funktion. Undg udsaettelse for str ling.Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiinan kym tt m lle laseris teilylle. l katso s teeseen !“Pour votre scurite, ces documents doivent tre utiliss pades spcialistes agrs, seuls habilits rparer votreappareil en panne“.E

14、SDSAFETYBei jeder Reparatur sind die geltenden Sicherheitsvor-schriften zu beachten. Der Originalzustand des Ger tesdarf nicht ver ndert werden. F r Reparaturen sind Original-ersatzteile zu verwenden.Sicherheitsbauteile sind durch das Symbol markiert.Les normes de scurit exigent que lappareil soit r

15、emisltat dorigine et que soient utilises les pices derechange identiques celles spcifies.Les composants de scurit sont marqusCLASS 1LASER PRODUCTInvisible laser radiation when open.After servicing and before returning the set to customerexposed metal parts to earth ground, to assure no shock hazard

16、exists. The leakage current must not exceed 0.5mA.perform a leakage current measurement test from all AVOID DIRECT EXPOSURE TO BEAM.GB WARNINGSFFFINDNLIGBGBGBFDNLIDANGER:ATTENTIONWARNUNGWAARSCHUWINGAVVERTIMENTOWarning for powersupply on primary side The primary side of the powersupply including the

17、heatsink carries live mains voltage when the player is connected to the mains even when the player is swiched off !This primary area is not shielded so it is possible to touch copper tracks and/or components whenservicing the player. Service personnel have to take precautions to prevent touching thi

18、s area orcomponents in this area.The primary side of the powersupply has been indicated with a stripe-marked printed on the printedwiring board.2. WarningsG32DVD-VideoSuper VCDVideo CDAudio CDMP3-CDCD-R, CD-RWStop/Play/PauseFast Forward/BackwardTime SearchSlow ForwardStep ForwardTitle/Chapte/Track S

19、electNext/PreviousRepeat(Title/Chapter/Track/All)A-B RepeatMulti-Angle SelectionAudio Selection(1 of max. 8 Languages)Subtitle Selection(1 of max. 32 Languages)Aspect Ratio conversion(16:9, 4:3Letterbox, 4:3Panscan)Parental ControlDisc Menu support(title menu/root menu)Programming with Favourite Sel

20、ectionPlayback Control for VCD2.0 discsDisc LockProgramming with Favourite SelectionMultiple Sound EffectTime Display(All/Track/Remaining TrackTime)Full audio functionality with remotecontrolProgramming with Favourite SelectionSpecifications subject to change without NoticeDolby, Dolby Digital,Pro L

21、ogic and the double-D symbols are trademarks of Dolby LaboratoriesDimensions: 435x92x320mm(WxHxD)Weight: estimated 3.8KgPower Inlet: 110240V50,60HzPower Usage: 90dBDynamic range(1KHz) 80dBAnalog Sound StereoDolby digital multichannel surround soundDolby digital downmix 2 channelMedium: Optical discD

22、iameter: 12cm (8cm)Playing time(12cm)DA Converter 10bitSignal handing ComponentsDigital Compression MPEG2 for DVDMPEG1 for VCDVideo output: 1Vppinto 75 OhmS-Video output Y: 1Vpp into 75 OhmC: 0.3Vppinto 75 OhmComponent Video outputY1Vpp into 75 OhmCR 0.7Vppinto 75 OhmCB 0.7Vppinto 75 OhmPlayback Sys

23、temTechnical Specifications1.DVD707 / 751/781/782SpecificationsDVD Disc FormatTV SystemVideo FormatVideo PerformanceAudio FormatAudio PerformanceConnectionsPower SupplyCabinetPackage ContentsGeneralDVD FunctionalityVCD FunctionalityCD FunctionalityHANDLING CHIP COMPONENTSSERVICE TOOLS3. Service hint

24、sTest discsAudio signals disc -4822 397 30184Torx screwdriversSet (straight, T2 to T20) -4822 395 50145Set (square, T10, T15, T20) -4822 395 50132G334. Revision informationService manual version: 1.0Issue Date : 25th, October, 2001Revision information: N/AG345. Dismantling instructions and exploded

25、viewDISMANTLING INSTRUCTIONS DVD707/751/781/782See exploded view for item numbersCover 232Remove 7 screws 233 Lift cover at rearside to remove Front assy 200Remove 2 screws 212(front to frame)Unlock front from frame byreleasing successively snapsPlace front assy in front of the set (service position

26、)Display board 1004Remove 7 screws 211(board to front), pay attentionto the earth spring 252Demount board Switch assy 8008Remove 2 screws 211 Demount switch assy Loader module 1005Remove 4 screws 217(loader to frame)Demount loader module Remove connections toMPEG and PSU boardRemove the screw 255(MP

27、EG board to frame)Remove 5 screws 227(MPEG board to back plate)Release the snap of spacer254 (board to frame)Demount board Remove flex connections toMPEG boardRemove 3 screws 222(PSU board to frame)Remove 1 screws 228(PSU board to back plate)Release the snap of spacer226 (board to frame)Demount boar

28、d Remove flex connections toPSU boardMPEG board 1002 PSU board 1001MountingDemounting1001Power board1002MPEG board1004Front boardPCB LOCATION DVD707/751/781/7821005Loader module5. Dismantling instructions and exploded viewPARTS 12NC LISTDVD707/751DVD707/781DVD707/7821001 PSU board3141 018 024903141

29、018 024903141 018 024901002 MPEG board3141 018 025403141 018 024803141 018 024801005 Loader module3141 018 021903141 018 021903141 018 021901004 Front board3141 018 025103141 018 025103141 018 02510G355. Dismantling instructions and exploded viewDVD707/751/781/782 EXPLODED VIEWG4DG45G43G48G41G4EG49G

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