Philips-MC-77-Service-Manual电路原理图.pdf

《Philips-MC-77-Service-Manual电路原理图.pdf》由会员分享，可在线阅读，更多相关《Philips-MC-77-Service-Manual电路原理图.pdf（79页珍藏版）》请在收音机爱好者资料库上搜索。

1、Technical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Measurement setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Warnings & Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4Service Hints . . . . . . . . . . . . . . . . . . . . . . .

2、 . . . . . . . . . . . 2-1Location of printed circuit boards . . . . . . . . . . . . . . . . . . . 2-2Brief Operating InstructionsDismantling Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Service Testprogram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4Wiring Diag

3、ram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1Blockdiagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1Published by HB 0218 Service Audio Printed in The Netherlands Subject to modification3103 785 25160CDR Mini SystemCLASS 1LASER PRODUCTCopyright

4、2002 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrievalsystem or transmitted, in any form or by any means, electronic, mechanical, photocopying,or otherwise without the prior permission of Philips.Tabl

5、e of ContentsMC-77/21/21M/22/37Front Display Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Tuner Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Front Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8STANDBY (POWER) PART . . .

6、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1KEY CONTROL (KEYB. 1) & LIGHTWASH PARTS . . . . . . . . . . . . . . . 8-2HEADPHONE, JOG (VOLUME) AND CDC KEY PARTS . . . . . . . . . . . . 8-3Electronic Tape Function ETF8 . . . . . . . . . . . . . . . . . . . . 93 Disc Tray Changer Module

7、. . . . . . . . . . . . . . . . . . . . . 10Power Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Exploded view of set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Partslist of set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121-2Gene

8、ral:Mains voltage : 120 / 240V switchable (for /21): 230V (for /22): 120V (for /37)Mains frequency : 50 60HzPower consumption : 43W at 1/8 PRATED: 185W at max output: 10W at Stand by: 1W at ECO Stand byClock accuracy : 4 seconds per dayTuner: FMTuning range : 87.5MHz - 108MHzGrid : 50 kHz, 100kHz fo

9、r /37IF : 10.7MHz Aerial input : 75 coaxial: 300 click fit for /37Sensitivity Mono (26dB S/N) : 60dBImage rejection : 25dB-3dB Limiting Point : 45dBImage rejection : 28dBLWTuning range : 153kHz - 279kHzGrid : 3kHzIF : 450kHz 1kHzSensitivity at 26dB S/N : 35dBImage rejection : 30dBAmplifier:Output po

10、wer : 2 x 75W at 6 (2x70W FTC)Headphone : 2,5V at 100kFrequency response : 20Hz - 20kHz (-3dB) LimitEqualizer : Digital Sound ControlInput sensitivityAux/Line : 500mV 2dBMicrophone : 2.5mV 2dB at 1kHzCD unit:Measured at the output of the 3DTC Module.Frequency response within : 20Hz - 20kHz at 1dBSig

11、nal/Noise ratio : 80dB (A-weighted)Distortion at 1kHz,0dB : 60dB at IEC IFrequency response : 80Hz - 12500Hz within 8dBSignal/Noise ratio : 48dB (A-weighted)Distortion at 1kHz,250nW/m: 40sTechnical Specification1-3Measurement SetupBandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTRF Ge

12、nerator e.g. PM5326S/N and distortion metere.g. Sound Technology ST1700BUse a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).Ri=50WTuner FMBandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTS/N and distortion metere.g. Sound Technology S

13、T1700BFrame aeriale.g. 7122 707 89001Tuner AM (MW,LW)To avoid atmospheric interference all AM-measurements have to be carried out in a Faradays cage.RF Generator e.g. PM5326Ri=50WLRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BDUTCDUse Audio Sign

14、al Disc SBC429 4822 397 30184(replaces test disc 3)LRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BDUTRECORDERUse Universal Test Cassette CrO2SBC419 4822 397 30069or Universal Test Cassette Fe SBC420 4822 397 30071LF Generator e.g. PM51101-4 WARN

15、INGAll ICs and many other semiconductors are 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 too

16、ls at this potential.f ATTENTIONTous les IC et beaucoup 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

17、 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 WARNUNGAlle ICs und viele andere Halbleiter sind empfindlichgegenber elektrostatischen Entladungen (ESD).Unsorgfltige Behandlung

18、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.Halten Sie Bauteile und Hilfsmittel ebenfalls auf diesemPotential.WAARSCHUWINGAlle ICs en vele andere halfgeleiders z

19、ijn gevoelig voorelectrostatische ontladingen (ESD).Onzorgvuldig behandelen 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 hulpmid

20、delen ook op ditzelfde potentiaal.i AVVERTIMENTOTutti IC e parecchi semi-conduttori 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 esserec

21、ollegato allo stesso potenziale che quello della massadelpparecchio tramite un braccialetto 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 wh

22、ich are identical withthose specified be used.Safety components are marked by the symboliLe 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 conVeilighei

23、dsbepalingen vereisen, dat het apparaat in zijnoorspronkeliijke toestand wordt teruggebracht en datonderdelen, identiek aan de gespecificeerde, worden toegepast.De Veiligheidsonderdelen zijn aangeduid met het symbools Varning !Osynlig laserstrlning nr apparaten r ppnad ochsprren r urkopplad. Betrakt

24、a ej strlen. Advarsel !Usynlig laserstrling ved bning nr sikkerhedsafbrydere er ude af funktion. Undg udsaettelse for strling. Varoitus !Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiinankymttmlle laseristeilylle. l katso steeseen !f“Pour votre scurite, ces documents doivent tre util

25、iss pardes spcialistes agrs, seuls habilits rparer votreappareil en panne“.ESDSAFETYdBei jeder Reparatur sind die geltenden Sicherheitsvor-schriften zu beachten. Der Originalzustand des Gertesdarf nicht verndert werden. Fr Reparaturen sind Original-ersatzteile zu verwenden.Sicherheitsbauteile sind d

26、urch das Symbol markiert.fLes normes de scurit exigent que lappareil soit remis ltat dorigine et que soient utilises les pices derechange identiques celles spcifies.Les composants de scurit sont marqusCLASS 1LASER PRODUCT DANGER: Invisible laser radiation when open. After servicing and before return

27、ing 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 not exceed 0.5mA.AVOID DIRECT EXPOSURE TO BEAM. AVAILABLE ESD PROTECTION EQUIPMENT :anti-static table mat large 1200x650x1.25mm 482

28、2 466 10953small 600x650x1.25mm 4822 466 10958anti-static wristband 4822 395 10223connection box (3 press stud connections, 1M) 4822 320 11307extendible cable (2m, 2M, to connect wristband to connection box) 4822 320 11305connecting cable (3m, 2M, to connect table mat to connection box) 4822 320 113

29、06earth cable (1M, to connect any product to mat or to connection box) 4822 320 11308KIT ESD3 (combining all 6 prior products - small table mat) 4822 310 10671wristband tester 4822 344 13999Warnings & Safety2-1TORX T10 screwdriver with shaftlength 150mm .4822 395 50423TORX screwdriver set SBC 163 .4

30、822 295 50145Audio signal disc SBC 429.4822 397 30184Playability test disc SBC444 .4822 397 30245Test disc 5 (disc without errors) +Test disc 5A (disc with dropout errors, black spots and fingerprints)SBC 426/426A .4822 397 30096Burn in test disc (65 min. 1kHz signal at -30dB level without “pause“)

31、.4822 397 30155SBC420 Test cassette Fe.4822 397 30071SBC419 Test cassette CrO2.4822 397 30069Service hintsHandling chip componentsThe demo mode displays various features of the set and will start automatically.Press and hold DEMO STOP on the system until “DEMO OFF OFF“ is displayed. The system will

32、switch toStandby mode.Note: Even if you remove the AC power cord and reconnect it to the wall socket, the demonstration will remain offuntil you activate it again.Escape from Demo Mode“Service Tools2-2MAINS BOARDSOCKETBOARDTUNER BOARDETF 8BOARDDISPLAY BOARDCOMBI BOARDSTANDBY(POWER)BOARDCDC KEYBOARDK

33、EY CONTROL(KEYB.1)BOARDJOG(VOLUME)BOARDHEADPHONEBOARDLIGHTWASH BOARDCD MAIN BOARD3DTCLOADERMECHANICBOARDLocation of Printed Circuit BoardsAttention:Lightwash, CDC-key board, standby board and headphone board are part of the Front Control Board.For details see chapter 8Brief Operating Instruction2-3T

34、he following excerpt of the Owners Manual serves as a very short introduction to the set.The complete Owners Manual can be downloaded in several languages from the Internet site of Philips Customer Care Center: CD/CD-R/CD-RW COMPATIBLEOPENSTANDBY-ONECOPOWERiRVOLAUX/CDRPROGPRESETTAPESEARCH/TUNETUNERD

35、EMO STOPPAUSEPREV NEXTRECSTOPPLAYBASS TREBLEPHONES1234567890!#$%NEWSDC3CHANGERCD 123CDOPENCLOSECD 1CD 2CD 3MICRO SYSTEMAUTO REVERSE CLASS D AMPLIFIER SYSTEMWOOX ADVANCED TECHNOLOGY SYSTEM2-4Controls (main systems illustration on page 3)Controls on the system andremote control1STANDBY ONyto switch th

36、e system on or to Standby mode.2ECO POWERto switch the system on or to Eco PowerStandby mode.3iRinfrared sensor for remote control.4#OPENto open the tape deck door.5PHONESto connect headphones.6PROG (PROGRAM)for CD.to programme disc tracks.for TUNER.to programme preset radiostations.for CLOCK.to sel

37、ect 12- or 24-hour clock mode.7BASS/TREBLEto select BASS or TREBLE sound feature.BASS/TREBLE+/-(on the remote control)to increase or decrease the low or high tonelevel for the respective BASS or TREBLE soundfeature selected.8wOOx(on the system only)to select the next wOOxlevel or switch off wOOx sou

38、nd effect.(on the remote control only)to switch on or offthe wOOx sound effect. wOOx LEVEL(on the remote control only)to select a desiredwOOx level :WOOX 1,WOOX 2 orWOOX3.9VOL (VOLUME +/-)to increase or decrease the volume.(on the system only)to increase or decrease thelow or high tone level for the

39、 respective BASS orTREBLE sound feature selected.00 RECto start recording on a tape.!SOURCE to select the following:CD 123 (CD 123)to select disc tray 1,2 or 3.TUNERto select waveband :FM,MW or LW.TAPEto select tape mode.AUX / CDRto select a connected external source :CDR or AUX (auxiliary) mode.Mod

40、e Selection PLAY PAUSE for CD.to start or interrupt playback.for TAPE.to start playback.for PLUG & PLAY(on the system only)toinitiate and start plug & playmode.STOP/DEMO STOP for CD.to stop playback or to clear aprogramme.for TUNER.to stop programming.(on the system only)to delete thepreset radio st

41、ation.for TAPE.to stop playback or recording.for DEMO.(on the system only)to activate/deactivate the demonstration.for CLOCK.to exit clock setting or cancel timer.for PLUG & PLAY(on the system only)to exitplug & play mode.PREV / NEXT (PRESET43)for CD.to skip to the beginning of the current,previous,

42、or next track.for TUNER.to select a preset radio station.for TAPE.to select tape side (back or front).for CLOCK.to set the minute.SEARCH / TUNE for CD.to search backward/forward.for TUNER.totune to a lower or higher radiofrequency.for TAPE.to rewind or fast forward.for CLOCK.to set the hour.Controls

43、 ! & 9 6 8*-+-+-( ) 79#CD OPENCLOSE (CD 1/CD 2/CD 3) 0to open or close the individual disc tray :CD 1,CD 2 or CD 3$Disc trays%Display screento view the current status of the system.MUTEto interrupt or resume sound reproduction.&CD DIRECT 1/2/3to select a disc tray for playback.*IS (INCREDIBLE SURROU

44、ND)to activate or deactivate the surround soundeffect.(DIMto select various dim mode :DIM 1,DIM 2,DIM 3 or DIM OFF.)AUTO REV.(AUTO REVERSE)to select the desired tape playback modes.TIMERto display timer or set the timer.REPEATto playback track(s)/disc(s)/programmerepeatedly.SHUFFLEto playback all av

45、ailable discs and their tracks/programme in random order.TIMER ON/OFFto activate or deactivate the timer function.NEWSto hear News automatically.SLEEPto activate, deactivate or set the sleep timerfunction.RDSto select RDS information.CLOCKto display clock or set the clock.Bto switch the system to Ec

46、o Power Standbymode.Notes for remote control:First,select the source you wish tocontrol by pressing one of the source selectkeys on the remote control (CD 123 orTUNER,for example).Then select the desired function (,for example).Brief Operating Instruction2-5Brief Operating InstructionPreparationsFM AntennaFor better FM stereo reception, connect an outdoor FM antenna to the FM ANTENNAterminal.CSpeakers ConnectionFront SpeakersConnect the speaker wires to the SPEAKERS(FRONT) terminals,right speaker to “R“ and leftspeaker