Philips-MCM-250-Service-Manual(1) 电路图 维修手册.pdf

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1、Version 1.1 MC-M250 3140 785 32051 ?Service ManualService Manual Micro System all versions Published by SL 0225 Service Audio Printed in The Netherlands Subject to modification Copyright 2001 Philips Consumer Electronics B.V. Eindhoven, The Netherlands All rights reserved. No part of this publicatio

2、n 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. Handling chip components .1- 1 Technical specification.2- 1 Service tools.2- 1 Service measurement setup.2- 2 Con

3、nections and controls.3- 1.3- 2 Disassembly diagram .4- 1 Service Test Program.4- 2 Pin description of ICs.4- 3.4- 4 Set block diagram.5- 1 Set wiring diagram.5- 2 LED BOARD circuit diagram .6- 1 layout diagram.6- 1 FRONT BOARD circuit diagram .7- 1 layout diagram.7- 2.7- 3 POWER BOARD circuit diagr

4、am .8- 1 layout diagram.8- 1 TUNER BOARD (ECO6 cenelec) circuit diagram .9- 1 layout diagram.9- 2 tuner adjustment table.9- 2 TUNER BOARD (ECO6 non cenelec) circuit diagram .9- 3 layout diagram.9- 4 tuner adjustment table.9- 4 ETF 8 TAPE DECK MODULE circuit diagram .10- 1 layout diagram.10- 2 tape d

5、eck adjustment .10- 3 tape deck wiring diagram.10- 4 COMBI BOARD circuit diagram.11- 1.11- 3 layout diagram.11- 4.11- 5 COMBI BOARD (for production after week 0303) circuit diagram.11- 6.11- 8 layout diagram.11- 9.11- 10 SWITCH BOARD circuit diagram. .12- 1 layout diagram.12- 1 CD MODULE (CD99-MP3CD

6、2002) circuit diagram.12- 1,13- 1 layout diagram.13- 2 MP3-CD2002 BOARD circuit diagram .14- 1 layout diagram.14- 2 Exploded view (main set) .15- 1.15- 2 Mechanical partslist.15- 2 Exploded view diagram (tape deck).15- 3 Electrical partslist.16- 1.16- 16 Electrical partslist (for production after we

7、ek 0303).16- 17.16- 22 TABLE OF CONTENTS CLASS 1 LASER PRODUCT RadioFans.CN 收音机爱 好者资料库 1 - 1 HANDLING CHIP COMPONENTS WARNING All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD). Careless handling during? repair can reduce life drastically.? When repairing, make s

8、ure 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 ATTENTION Tous les IC et beaucoup dautres semi- conducteurs sont? sensibles aux dcharges statiques (ESD). Leur longvite? pourrait tre considrabl

9、ement courte par le fait quaucune? prcaution nst prise leur manipulation.? Lors de rparations, sassurer de bien tre reli au mme? potentiel que la masse de lappareil et enfileer le bracelet? serti dune rsistance de scurit.? Veiller ce que les composants ainsi que les outils que lon? utilise soient ga

10、lement ce potentiel. d WARNUNG Alle ICs und viele andere Halbleiter sind empfindlich? gegenber elektrostatischen Entladungen (ESD).? Unsorgfltige Behandlung im Reparaturfall kann die? Lebensdauer drastisch reduzieren.? Sorgen Sie dafr, da Sie im Reparaturfall ber ein Puls- ? armband mit Widerstand m

11、it dem Massepotential des? Gertes verbunden sind.? Halten Sie Bauteile und Hilfsmittel ebenfalls auf diesem? Potential. WAARSCHUWING Alle ICs en vele andere halfgeleiders zijn gevoelig voor? electrostatische ontladingen (ESD).? Onzorgvuldig behandelen tijdens reparatie kan de levensduur? drastisch d

12、oen 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 AVVERTIMENTO Tutti IC e parecchi semi- conduttori sono sensibili alle scariche?

13、 statiche (ESD).? La loro longevit potrebbe essere fortemente ridatta in caso di? non osservazione della pi grande cauzione alla loro? manipolazione. Durante le riparationi occorre quindi essere? collegato allo stesso potenziale che quello della massa? delpparecchio tramite un braccialetto a resiste

14、nza.? 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 symbol i

15、 Le norme di sicurezza estigono che lapparecchio venga? rimesso nelle condizioni originali e che siano utilizzati i? pezzi di ricambiago identici a quelli specificati.? Componenty di sicurezza sono marcati con Veiligheidsbepalingen vereisen, dat het apparaat in zijn? oorspronkeliijke toestand wordt

16、teruggebracht en dat? onderdelen, identiek aan de gespecificeerde, worden toegepast.? De Veiligheidsonderdelen zijn aangeduid met het symbool s Varning ! Osynlig laserstrlning nr apparaten r ppnad och? sprren r urkopplad. Betrakta ej strlen. Advarsel ! Usynlig laserstrling ved bning nr sikkerhedsafb

17、rydere er ude af funktion. Undg udsaettelse for strling. Varoitus ! Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina nkymttmlle laseristeilylle. l katso steeseen ! f Pour votre scurite, ces documents doivent tre utiliss par? des spcialistes agrs, seuls habilits rparer votre? apparei

18、l en panne. ESD SAFETY d Bei jeder Reparatur sind die geltenden Sicherheitsvor- schriften zu beachten. Der Originalzustand des Gertes? darf nicht verndert werden. Fr Reparaturen sind Original- ? ersatzteile zu verwenden.? Sicherheitsbauteile sind durch das Symbol markiert. f Les normes de scurit exi

19、gent que lappareil soit remis? ltat dorigine et que soient utilises les pices de? rechange identiques celles spcifies.? Les composants de scurit sont marqus CLASS 1 LASER PRODUCT DANGER: Invisible laser radiation when open. After servicing and before returning the set to customer perform a leakage c

20、urrent 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 COMPONENTS RadioFans.CN 收音机爱 好者资料库 2 - 1 SERVICE TOOLS TORX T10 screwdriver with shaftlength 150mm.4822

21、395 50423 TORX screwdriver set SBC 163.4822 295 50145 Audio signal disc SBC 429.4822 397 30184 Playability test disc SBC 444.4822 397 30245 Test disc 5(disc without errors ) + Test disc 5A (disc with dropout errors, black spots and fingerprints) SBC 426/426A.4822 397 30096 Burn in test disc (65 min.

22、 1kHz signal at - 30 dB level without “pause”).4822 397 30155 Universal test cassette Fe SBC 420.4822 397 30071 anti-static table matlarge 1200 x650 x1.25mm4822 466 10953 small 600 x650 x1.25mm4822 466 10958 anti-static wristband4822 395 10223 connection box (3 press stud connections, 1M)4822 320 11

23、307 4822 320 11305extendible cable (2m, 2M, to connect wristband to connection box) connecting cable (3m, 2M, to connect table mat to connection box)4822 320 11306 earth cable (1M, to connect any product to mat or to connection box) 4822 320 11308 KIT ESD3 (combining all 6 prior products - small tab

24、le mat)4822 310 10671 wristband tester4822 344 13999 AVAILABLE ESD PROTECTION EQUIPMENT TECHNICAL SPECIFICATIONS GENERAL Mains voltage- /21/21M : 120 / 230 V - /22/30/33 : 230 V Mains frequency - /37 - /22/30/33 : 120 V : 50 Hz - /21/21M : 50 / 60 Hz Battery - /37 : 60 Hz remote : 3 V (R6 x 2) Power

25、 consumptionnormal : 60 W Standby : 3 W Dimension (W x H x D): 223 x 140 x 247 mm Weight: 5.6 Kg AMPLIFIER Output powermains : 2 x 8 W Speaker impedance: 2 x 8 ohm Frequency response: 100 Hz - 10 kHz (4dB) TUNER - FM SECTION Tuning range: 87.5 - 108 MHz IF frequency: 10.7 MHz 0.02 MHz Sensitivity: 1

26、6 dBf at 26dB S/N Selectivity300kHz : 55 dB IF suppression: 85 dB Image suppression: 40 dB Channel separation 1kHz : 28 dB TUNER - AM SECTION Tuning rangeMW : 531 - 1602 kHz Tuning range 530 - 1700 kHz for /37 LW : 153 - 279 kHz IF frequency: 450 kHz 1 kHz Sensitivity MW : 3.5 mV/m at 26dB S/N LW :

27、4.2 mV/m Selectivity MW : 22 dB LW : 35 dB IF rejectionMW : 64 dB Spurious rejection ratioMW : 58 dB LW : 51 dB Image rejection ratioMW : 40 dB LW : 85 dB S/N ratio (A- wght.): 90 dB THD+N1 kHz : 72 dB Channel crosstalk : 50 dB Channel unbalance: 1 dB RadioFans.CN 收音机爱 好者资料库 2 - 2 SERVICE MEASUREMEN

28、T Bandpass 250Hz- 15kHz e.g. 7122 707 48001 LF Voltmeter e.g. PM2534 DUT RF Generator e.g. PM5326 S/N and distortion meter e.g. Sound Technology ST1700B Tuner FW Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz). Ri=50 Bandpass 250Hz- 15kHz e.g. 7

29、122 707 48001 LF Voltmeter e.g. PM2534 DUT S/N and distortion meter e.g. Sound Technology ST1700B Frame aerial e.g. 7122 707 89001 Tuner 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

30、with 250kHz) to eliminate hum (50Hz, 100Hz). RF Generator e.g. PM5326 Ri=50 L R LEVEL METER e.g. Sennheiser UPM550 with FF- filter S/N and distortion meter e.g. Sound Technology ST1700B DUT CDRECORDER Use Audio Signal Disc SBC429 4822 397 30184 (replaces test disc 3) Use Universal Test Cassette Fe S

31、BC420 4822 397 30071 L R LEVEL METER e.g. Sennheiser UPM550 with FF- filter S/N and distortion meter e.g. Sound Technology ST1700B DUT LF Generator e.g. PM5110 Ri=50 3 - 1 BAND DISPLAY MP3ALBUMVOLUME PRESETTRACKSEARCHTUNEPROGRAM SOURCETIMER SETCLOCK REC iR OPEN S T A N D B Y - O N M C - M 2 5 0 M I

32、C R O S Y S T E M - + 1 3 2 ! 9 0 # $ 4 5 6 8 7 2 CD MODETIMERSLEEP TUNERTAPEAUX ALBUM/PRESET VOL MUTEDSCIS/DBB this pin should be tied LOW CL162616.9344 MHz system clock output DATA27serial d4(1)ata output (3- state) WCLK28word clock output (3- state) SCLK29serial bit clock output (3- state) EF30C2

33、 error flag output (3- state) TEST231test control input 2; this pin should be tied LOW KILL32kill output (programmable; open- drain) VSSD1 33(1)digital ground 2 V2/V334versatile I/O: input versatile pin 2 or output versatile pin 3 (open- drain) WCLI35word clock iutput (for data loopback to DAC) SDI3

34、6serial 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 input Abbreviations and Pin-description of CD Ic

35、s SERVO PROCESSOR SAA7325H SYMBOLPINDESCRIPTION RAB41microcontroller 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) TEST3

36、44test control input 3; this pin should be tied LOW RCK45subcode clock input SUB46P- 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 output VSSD250(1)digital groun

37、d 3 DOBM51bi- phase mark output (externally buffered; 3- state) VDDD1(P)52(1)digital supply voltage 2 for periphery CFLG53correction flag output (open- drain) RA54radial actuator output FO55focus actuator output SL56sledge control output VDDD2(C)57(1)digital supply voltage 3 for core VSSD358(1)digit

38、al ground 4 MOTO159motor output 1; versatile (3- state) MOTO260motor output 2; versatile (3- state) V461versatile output pin 4 V562versatile output pin 5 V163versatile intput pin 1 LDON64laser drive on output (open- drain) Note : All supply pins must be connected to the same external power supply vo

39、ltage. 4 - 44 - 4 BLOCK DIAGRAM OF INTEGRATED CIRCUIT IC 7400 TMP86CS25F PINS DESCRIPTION OF IC 7400 TMP86CS25F PIN FUNCTION 5 - 15 - 1 +12.5V (MC20)+12.5V (MC20)+12V_S (MC20) - 8V2 (MC20) ETF- 8 +12V_S - 8V2 - 8V2 Stabilizer +12.5V TAPE MODULE SOURCE SELECTOR 8 OHM ECO6 TUNER MODULE CD99 MP3 (2002) LCD CD MODULE POWER AMP CONTROL DIGITAL DCC BUFFER + - R From Processor From Processor TAPE_REC From Processor From Tuner A0/A1 From Processor +5V6_S +5V6_S TAPE_REC +5V6_S PWM +5V+M