Philips-MCM-250-Service-Manual电路原理图.pdf

Version 1.1MC-M250© 3140 785 32051Service ManualMicro Systemall versionsPublished by SL 0225 Service Audio Printed in The Netherlands Subject to modification©Copyright 2001 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.Handling chip components .1-1Technical specification.2-1Service tools .2-1Service measurement setup.2-2Connections and controls.3-1.3-2Disassembly diagram .4-1Service Test Program.4-2Pin description of ICs.4-3.4-4Set block diagram.5-1Set wiring diagram.5-2LED BOARDcircuit diagram .6-1layout diagram .6-1FRONT BOARDcircuit diagram .7-1layout diagram.7-2.7-3POWER BOARDcircuit diagram .8-1layout diagram .8-1TUNER BOARD (ECO6 cenelec)circuit diagram .9-1layout diagram .9-2tuner adjustment table .9-2TUNER BOARD (ECO6 non cenelec)circuit diagram .9-3layout diagram .9-4tuner adjustment table .9-4ETF 8 TAPE DECK MODULEcircuit diagram .10-1layout diagram .10-2tape deck adjustment .10-3tape deck wiring diagram.10-4COMBI BOARDcircuit diagram. .11-1.11-3layout diagram.11-4.11-5COMBI BOARD (for production after week 0303)circuit diagram. .11-6.11-8layout diagram.11-9.11-10SWITCH BOARDcircuit diagram. .12-1layout diagram .12-1CD MODULE (CD99-MP3CD2002)circuit diagram .12-1,13-1layout diagram .13-2MP3-CD2002 BOARDcircuit diagram .14-1layout diagram .14-2Exploded view (main set) .15-1.15-2Mechanical partslist .15-2Exploded view diagram (tape deck).15-3Electrical partslist.16-1.16-16Electrical partslist (for production after week 0303).16-17.16-22TABLE OF CONTENTSCLASS 1LASER PRODUCT1 - 1HANDLING CHIP COMPONENTS© WARNINGAll ICs and many other semiconductors are susceptible toelectrostatic 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 ATTENTIONTous 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 WARNUNGAlle 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 Puls- armband mit Widerstand mit dem Massepotential des Gerätes verbunden sind. Halten Sie Bauteile und Hilfsmittel ebenfalls auf diesem Potential.ñ WAARSCHUWINGAlle 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 AVVERTIMENTOTutti 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 symboliLe 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 conñVeiligheidsbepalingen 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 symbools Varning !Osynlig laserstrålning när apparaten är öppnad och spärren är urkopplad. Betrakta ej strålen. Advarsel !Usynlig laserstråling ved åbning når sikkerhedsafbrydere er ude af funktion. Undgå udsaettelse for stråling.ß Varoitus !Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiinanäkymättömälle 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“.ESDSAFETYdBei jeder Reparatur sind die geltenden Sicherheitsvor-schriften zu beachten. Der Originalzustand des Gerätes darf nicht verändert werden. Für Reparaturen sind Original- ersatzteile zu verwenden. Sicherheitsbauteile sind durch das Symbol markiert.fLes normes de sécurité exigent que lappareil soit remis à létat dorigine et que soient utilisées les pièces de rechange identiques à celles spécifiées. Les composants de sécurité sont marquésCLASS 1LASER 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 no shock hazard exists. The leakage current must not exceed 0.5mA.AVOID DIRECT EXPOSURE TO BEAM.HANDLING CHIP COMPONENTS2 - 1SERVICE TOOLSTORX T10 screwdriver with shaftlength 150mm.4822 395 50423TORX screwdriver set SBC 163.4822 295 50145Audio signal disc SBC 429.4822 397 30184Playability test disc SBC 444.4822 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 -30 dB level without “pause”).4822 397 30155Universal test cassette Fe SBC 420.4822 397 30071anti-static table mat large 1200x650x1.25mm 4822 466 10953small 600x650x1.25mm 4822 466 10958anti-static wristband 4822 395 10223connection box (3 press stud connections, 1M) 4822 320 113074822 320 11305extendible cable (2m, 2M, to connect wristband to connection box)connecting 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 prior products - small table mat) 4822 310 10671wristband tester 4822 344 13999AVAILABLE ESD PROTECTION EQUIPMENTTECHNICAL SPECIFICATIONSGENERALMains voltage -/21/21M : 120 / 230 V-/22/30/33 : 230 VMains frequency-/37-/22/30/33: 120 V: 50 Hz-/21/21M : 50 / 60 HzBattery-/37 : 60 Hzremote : 3 V (R6 x 2)Power consumption normal : 60 WStandby :3 WDimension (W x H x D) : 223 x 140 x 247 mmWeight : 5.6 KgAMPLIFIEROutput power mains : 2 x 8 WSpeaker impedance :2 x 8 ohmFrequency response : 100 Hz - 10 kHz (±4dB)TUNER - FM SECTIONTuning range : 87.5 - 108 MHzIF frequency : 10.7 MHz ± 0.02 MHzSensitivity : 16 dBf at 26dB S/NSelectivity 300kHz : 55 dBIF suppression : 85 dBImage suppression : 40 dBChannel separation 1kHz : 28 dBTUNER - AM SECTIONTuning range MW : 531 - 1602 kHzTuning range530 - 1700 kHz for /37LW :153 - 279 kHzIF frequency : 450 kHz ± 1 kHzSensitivity MW : 3.5 mV/m at 26dB S/NLW : 4.2 mV/mSelectivity MW : 85 dBS/N ratio (A-wght.) : > 90 dBTHD+N 1 kHz : > 72 dBChannel crosstalk : > 50 dBChannel unbalance : < ±1 dB2 - 2SERVICE MEASUREMENTBandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTRF Generator e.g. PM5326S/N and distortion metere.g. Sound Technology ST1700BTuner FWUse a 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 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. PM5326Ri=50LRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BDUTCD RECORDERUse 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 - 1BANDDISPLAYMP3ALBUMVOLUMEPRESETTRACKSEARCHTUNEPROGRAMSOURCETIMER SETCLOCKRECiROPENSTANDBY-ONMC-M250 MICRO SYSTEM-+1 32 ! 90#$4 5 6 872CDMODETIMERSLEEPTUNERTAPEAUXALBUM/PRESETíÇVOLë ááMUTEDSCIS/DBBÉÉÅÉthis pin should be tied LOWCL162616.9344 MHz system clock outputDATA27serial d4(1)ata output (3-state)WCLK28word clock output (3-state)SCLK29serial bit clock output (3-state)EF30C2 error flag output (3-state)TEST231test control input 2; this pin should be tied LOWKILL32kill output (programmable; open-drain)VSSD133(1)digital ground 2V2/V334versatile I/O: input versatile pin 2 or output versatile pin 3 (open-drain)WCLI35word clock iutput (for data loopback to DAC)SDI36serial data input (for data loopback to DAC)SCLI37serial bit clock input (for data loopback to DAC)RESET38power-on reset input (active LOW)SDA39microcontroller interface data I/O line (open-drain output)SCL40microcontroller interface clock line inputAbbreviations and Pin-description of CD IcsSERVO PROCESSOR SAA7325HSYMBOLPINDESCRIPTIONRAB41microcontroller interface R/W and load control line input (4-wire bus mode)SILD42microcontroller interface R/W and load control line input (4-wire bus mode)STATUS43servo interrupt request line/decoder status register output (open-drain)TEST344test control input 3; this pin should be tied LOWRCK45subcode clock inputSUB46P-to-W subcode bits output (3-state)SFSY47subcode frame sync output (3-state)SBSY48subcode block sync output (3-state)CL11/44911.2896 MHz or 4.2336 MHz (for microcontroller) clock outputVSSD250(1)digital ground 3DOBM51bi-phase mark output (externally buffered; 3-state)VDDD1(P)52(1)digital supply voltage 2 for peripheryCFLG53correction flag output (open-drain)RA54radial actuator outputFO55focus actuator outputSL56sledge control outputVDDD2(C)57(1)digital supply voltage 3 for coreVSSD358(1)digital ground 4MOTO159motor output 1; versatile (3-state)MOTO260motor output 2; versatile (3-state)V461versatile output pin 4V562versatile output pin 5V163versatile intput pin 1LDON64laser drive on output (open-drain)Note : All supply pins must be connected to the same external power supply voltage.4 - 44 - 4BLOCK DIAGRAM OF INTEGRATED CIRCUITIC 7400 TMP86CS25FPINS DESCRIPTION OF IC 7400 TMP86CS25FPIN FUNCTION