Philips-MX-999-Service-Manual电路原理图.pdf

《Philips-MX-999-Service-Manual电路原理图.pdf》由会员分享，可在线阅读，更多相关《Philips-MX-999-Service-Manual电路原理图.pdf（78页珍藏版）》请在收音机爱好者资料库上搜索。

1、Service ManualSafety regulations require that the set be restored to its originalcondition and that parts which are indentical with those specifiedbe used.Copyright 1995 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, st

2、ored in a retrievalsystem or transmitted, in any form or by any means, electronic, mechanical, photocopying,or otherwise without the prior permission of Philips.Published by MD 0016 Service Audio Printed in the Netherlands Subject to modificationPCS 102 4813104 215 50060TABLE OF CONTENTSPageLocation

3、 Boards / System info . 1-2Technical Specification . 1-3Service Tool / Measurement setup / Safety . 1-4Warning / Handling Chip components . 1-5Abbreviations . 1-6Instruction for Use . 2Dismantling hints / Service positions . 3-1Dismantling hints MDM Module . 3-2Wiring diagram . 3-3Block diagram . 4S

4、ervice Test program . 5Front Board . 6Tuner 95 diagram . 7AECO 5 Tuner diagram . 7BMulti-Channel Decoding Module . 8Mains Board . 9Mono Board . 10Exploded view . 11S-VHS Board . 12Exploded view partslist . 13Partslist Mono Board . 14DIGITALE A/V SURROUND RECEIVER FR975/00/01C/17MX980D/37D I G I T A

5、LDOLBY 1-2PCS 102 482LOCATION OF PRINTED CIRCUIT BOARDSSYSTEM INFORMATIONFeatures &Board in usedFront colourTuner board - Tuner 95Tuner board - ECO 5RDSAntenna input FMMains cord typeMains outlet typeMains voltageVoltage selector/00Blackx-xCoaxial 75RIECIEC230V -/01CChampagne-x-Coaxial 75RIECIEC110-

6、127 / 220-240x/17Black-x-Clickfit 300RUL polarizedUL polarized120V-Type &VersionsFR975VERSION VARIATIONSReceiver Front speaker Center speaker Surround speakerMX 980D/37 include :FR975/172 x Home CinemaSpeaker 100WHome Cinema CenterSpeaker 100WSubwooferFB201V/172 x Home CinemaSpeaker 100WTuner BoardS

7、crew TerminalMDM BoardMono 2 BoardFront BoardSecondary Trafo BoardMains BoardHeadphone & Front AV BoardP50 & Subw. &Video Selector BoardS-VHS Video Board1-3PCS 102 483SPECIFICATION FR975GeneralMains voltage :230V for /00:110-127V / 220-240switchable only /01/01C: 120V for /17Mains frequency : 50Hz f

8、or /00: 50/60Hz for /01/01C: 60Hz for /17Power concumption : 2W at stby: 3W at stby 240V/01/01CDimension. wxhxd : 435x138x350 mmRemote control : Multibrand/UniversalAmplifierOutput powerStereo mode (L+R) : 2x100W DIN only /00/01(1kHz,0,7%THD, 6): 2x80W FTC only /17(40Hz-20kHz 0,7%THD, 6)Surround mod

9、eL+R : 2x100W (1kHz,0,7%THD, 6)Center : 100W (1kHz,0,7%THD, 6)Surround Left+Right : 2x100W (1kHz,0,7%THD, 6)Distortion (5W)1kHz : 0,05%40Hz - 20kHz : 0,2%Headphone : 6,3mm stereo jack with switchOutput level : 3V EMF, 60Crosstalk between source 1kHz : -65dB(1W) 250Hz 10kHz : -60dBCrosstalk between c

10、hannels -1kHz : -55dB(1W) 250Hz 10kHz : -50dBFrequency response: 10Hz 20kHz (-3dB) LimitPower stage protection : Shortcircuit: DC (Vout 10V) for 1secTemperature : Transformer ( 140 Celcius): Heatsink ( 140 Celcius)Audio SelectorInput sensitivityPhono : 5mV impedance 47k/220pfCD : 250mV impedance 47k

11、CDR/TAPE : 250mV impedance 47kVCR : 250mV impedance 47kTV : 250mV impedance 47kSAT : 250mV impedance 47k6CH / DVD : 250mV impedance 47kFRONT AV : 250mV impedance 22kOutput levelCDR/TAPE : 250mV impedance 1kVCR : 250mV impedance 1kOutput level (variable)Subwoofer pre-out : 800mV impedance 1kCenter pr

12、e-out : 800mV impedance 1kDigital SelectorInput : 2 x cinch: 2 x opticalOutput : 1 x cinchVideo Selector - CVBSInput sensitivityDVD/VCR/TV/Front AV : 1 Vpp impedance 75Output levelMonitor/VCR : 1 Vpp impedance 75Frequency response : 50Hz 6MHzVideo Selector - SVHSInput sensitivityDVD/VCR/TV : 1 Vpp i

13、mpedance 75Output levelMonitor/VCR : 1 Vpp impedance 75Frequency response : 50Hz 6MHzTone controleLoudness(volume -20dB Ref: 1kHz=0dB) : 100Hz +6 dB: 10kHz +2,5 dBTone control (Ref: 1kHz=0dB): Bass 100Hz -9dB +9dB: Treble 10kHz -9dB +9dBMulti Channel Decoder - MDM2000MPEG5.1 / MPEG 7.1 (7.1 downmix

14、to 5.1)Dolby Digital (AC-3)Digital Theater Systems (DTS)Linear PCM (up to 96kHz, 24 bits resolution)Automatic audio/data type detection (AC-3,dts,MPEG-2,PCM)Dolby Pro LogicMPEG-2 dual mono channel selection I/IIVirtual Dolby Surround (422/423)Virtual MPEG Digital (522/523)Virtual Dolby Digital (522/

15、523)Virtual DTS Surround (522/523)Multi - Front / Multi - rear / Natural SurroundDigital Bass ManagementParallel Stereo DownmixFour Stereo (224)Volume ControlNoise Generator (test tone)Surround mode selectorDelay Center and Surround Left , Surround RightTuner - (Tuner95 & ECO5)RDS : Only in /00FMTun

16、ing range : 87.5 108MHzGrid : 50kHz: 100kHz only for /17: 50 & 100kHz for /01/01C*IF frequency : 10.7MHz 25kHzAerial input : 75 coaxial: 300 clickfit only for /17Sensitivity at 26dB S/N : 2vSelectivity at 300kHz : 55dBImage rejection : 100dB 48dBDistortion at RF=1mV,dev.75kHz : 0,8% 0,9%-3dB Limitin

17、g point : 2VCrosstalk at RF=1mV,dev.40kHz : 35dB 27dB: 22dB only for /17MWTuning range : 522 -1611kHz for /00: 531 -1602kHz for/01/01C*: 530 -1700kHz for/01/01C*: 530 -1700kHz for /17Grid : 9kHz for /00: 9 & 10kHz for /01/01C*: 10kHz for /17IF frequency : 450kHz 1kHzAerial input : Frame aerialSensit

18、ivity at 26dB S/N : 1,5mV/m 3,5mV/mSelectivity at 9kHz : 23dB 18dBIF rejection : 50dB 64dBImage rejection : 33dB 28dBDistortion at RF=50mV,m=80% : 3%LW only in /00Tuning range : 153 - 279kHzGrid : 3kHzIF frequency : 450kHz 1kHzAerial input : Frame aerialSensitivity at 26dB S/N : 2,8mV/mSelectivity a

19、t 9kHz : 26dB: 24dB only for /17IF rejection : 100dBImage rejection : 45dBDistortion at RF=50mV,m=80% : 3%dB Values indicated are for “ECO 5 Tuner” only* Setting is software controlled1-4PCS 102 484Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTRF Generator e.g. PM5326S/N and distor

20、tion metere.g. Sound Technology ST1700BUse a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).Ri=50Tuner FMBandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTS/N and distortion metere.g. Sound Technology ST1700BFrame aeriale.g. 7122 707 89

21、001Tuner 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. PM5326Ri=50SERVICE TOOLMEASUREMENT SETUPSAFETYGBSafety regulations req

22、uire that the set be restored to itsoriginal condition and that parts which 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 identic

23、i a quelli specificati.Componenty di sicurezza sono marcati conNLVeiligheidsbepalingen vereisen, dat het apparaat in zijnoorspronkeliijke toestand wordt teruggebracht en datonderdelen, identiek aan de gespecificeerde, worden toegepast.De Veiligheidsonderdelen zijn aangeduid met het symboolSAFETYDBei

24、 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 durch das Symbol markiert.FLes normes de scurit exigent que lappareil soit remis ltat dor

25、igine et que soient utilises les pices derechange identiques celles spcifies.Les composants de scurit sont marqusAudio Signals Test Disc 1 . 4822 397 301841-5PCS 102 485WARNINGGB WARNINGAll ICs and many other semiconductors are susceptible toelectrostatic discharges (ESD). Careless handling duringre

26、pair 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.F ATTENTIONTous les IC et beaucoup dautres semi-conducteurs sontsensibles aux dcharges statiques

27、 (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 rsistance de scurit.Veiller ce que les composants ainsi que les

28、 outils que lonutilise soient galement ce potentiel.D WARNUNGAlle ICs 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-armba

29、nd mit Widerstand mit dem Massepotential desGertes verbunden sind.Halten Sie Bauteile und Hilfsmittel ebenfalls auf diesemPotential.NL WAARSCHUWINGAlle ICs en vele andere halfgeleiders zijn gevoelig voorelectrostatische ontladingen (ESD).Onzorgvuldig behandelen tijdens reparatie kan de levensduurdra

30、stisch 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.I AVVERTIMENTOTutti IC e parecchi semi-conduttori sono sensibili alle scarichest

31、atiche (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 braccialetto a resistenza.Assicurar

32、si che i componenti e anche gli utensili con quali silavora siano anche a questo potenziale.ESDGB AVAILABLE ESD PROTECTION EQUIPMENT :anti-static table mat large 1200x650x1.25mm 4822 466 10953small 600x650x1.25mm 4822 466 10958anti-static wristband 4822 395 10223connection box (3 press stud connecti

33、ons, 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 11306earth cable (1M , to connect any product to mat or to connection box) 4822 320 11308KIT ESD3 (combining all 6 prio

34、r products - small table mat) 4822 310 10671wristband tester 4822 344 13999HANDLING CHIP COMPONENTS1-6Aac 0VA AC 0 Voltageac 10VB AC 10 Voltageac 110VB AC 110 Voltageac 120VB AC 120 Voltageac gnd AC groundac h1 AC high voltage 1ac h2 AC high voltage 2ac l1 AC low voltage 1ac l2 AC low voltage 2ac1 A

35、C voltage 1ac2 AC voltage 2ac3 AC voltage 3amp lr on Amplifier Left - Right Onamp mute c s Amplifier mute center surroundamp mute c s sub Amplifier mute center surroundsubwooferamp mute lr Amplifier mute Left - Rightamp pd Amplifier power downamp prot Amplifier protectionamp s on Amplifier surround

36、Onamp stby Amplifier Standbyav gnd Audio groundav l Audio Leftav r Audio RightA/V Audio/VideoFf1 Filament 1f2 Filament 2fmute Fast muteGgnd d Ground digitalgnd s Ground signalHhp gnd Headphone groundhp l Headphone Lefthp on Headphone Onhp r Headphone Righthst Heatsink temperatureLls c Loudspeaker Ce

37、nterls gnd Loudspeaker groundls l Loudspeaker Leftls r Loudspeaker RightMmdm Multi channel Decoding Modulemdm c out Center outmdm gnd groundmdm l dmix Downmix Leftmdm l in Left inmdm l out Left outmdm r dmix Downmix Rightmdm r in Right inmdm r out Right outmdm req requestmdm rst resetmdm scl I2C clo

38、ckmdm sda I2C datamdm sl out surround Left outmdm sr out surround Right outmdm sub out subwoofer outmfd Mains failure detectionPp gnd P50 groundp p50 Cinema link P50 codeSs gnd Surround groundsofac scl Sofac I2C clocksofac1 sda1 Sofac 1 I2C data1sofac2 sda2 Sofac 2 I2C data2ss ce Source selector chi

39、penabless clk Source selector clockss data Source selector datasurr pre-out Surround pre-outTtu clk Tuner clocktu da Tuner datatu en Tuner enabletu gnd Tuner groundtu l Tuner Lefttu r Tuner Righttu rds Tuner RDStu stereo Tuner stereoVv gnd Video groundv scl Video I2C clockv sda Video I2C datav sig Video signalv sub sur Video subwoofer surroundABBREVIATIONSPCS 102 4862-1CONTROLSINSTRUCTIONS FOR USEPCS 105 701