Philips-MC-270-Service-Manual.pdf

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1、version1.0 MC260,MC270 3140 785 32940 ?Service ManualService Manual Micro System all versions Published by LX 0416 Service Audio Printed in The Netherlands Subject to modification Copyright 2004 Philips Consumer Electronics B.V. Eindhoven, The Netherlands All rights reserved. No part of this publica

2、tion 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 Conn

3、ections and controls.3-1 Instructions for use.3-2.3-7 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 TUNER BOARD (ECO6 cenelec) circuit diagram .7-1 layout diagram.7-2 tun

4、er adjustment table.7-2 TUNER BOARD (ECO6 non cenelec) circuit diagram .7-3 layout diagram.7-4 tuner adjustment table.7-4 ETF 8 TAPE DECK MODULE circuit diagram .8-1 layout diagram.8-2 tape deck adjustment.8-3 tape deck wiring diagram.8-4 CD MODULE (CD99-DA11) circuit diagram.9-1.9-3 layout diagram.

5、9-2 POWER BOARD circuit diagram .10-1 layout diagram.10-1 FRONT BOARD circuit diagram .11-1 layout diagram.11-2.11-3 COMBI BOARD circuit diagram.12-1.12-3 layout diagram.12-4.12-5 circuit diagram ( for /22/25).12-6.12-8 layout diagram ( for /22/25) .12-9.12-10 Exploded view (main set) .13-1.13-2 Mec

6、hanical service partslist.13-2 Exploded view diagram (tape deck).13-3 Electrical service partslist .14-1 Electrical partslist.14-2.14-17 Electrical partslist (for /22/25).14-18.14-23 (Not service parts,only for referrence) TABLE OF CONTENTS CLASS 1? LASER PRODUCT 1 - 1 WARNING All ICs and many other

7、 semiconductors are susceptible to electrostatic 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

8、. ATTENTION Tous les IC et beaucoup dautres semi-conducteurs sont sensibles aux d charges statiques (ESD). Leur long vite pourrait tre consid rablement court e par le fait quaucune pr caution n st prise leur manipulation. Lors de r parations, sassurer de bien tre reli au m me potentiel que la masse

9、de lappareil et enfileer le bracelet serti dune r sistance de s curit . Veiller ce que les composants ainsi que les outils que lon utilise soient galement ce potentiel. d d WARNUNG Alle ICs und viele andere Halbleiter sind empfindlich gegen ber elektrostatischen Entladungen (ESD). Unsorgf ltige Beha

10、ndlung im Reparaturfall kann die Lebensdauer drastisch reduzieren. Sorgen Sie daf r, da Sie im Reparaturfall ber ein Puls- armband mit Widerstand mit dem Massepotential des Ger tes verbunden sind. Halten Sie Bauteile und Hilfsmittel ebenfalls auf diesem Potential. WAARSCHUWING Alle ICs en vele ander

11、e 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

12、 componenten en hulpmiddelen ook op ditzelfde potentiaal. AVVERTIMENTO Tutti IC e parecchi semi-conduttori sono sensibili alle scariche statiche (ESD). La loro longevit potrebbe essere fortemente ridatta in caso di non osservazione della pi grande cauzione alla loro manipolazione. Durante le riparat

13、ioni occorre quindi essere collegato allo stesso potenziale che quello della massa del pparecchio 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 or

14、iginal condition and that parts which are identical with those specified be used. Safety components are marked by the symbol 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

15、 di sicurezza sono marcati con Veiligheidsbepalingen 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 symbool s Varning ! Osynlig laserstr lning n r a

16、pparaten r ppnad och sp rren r urkopplad. Betrakta ej str len. Advarsel ! Usynlig laserstr ling ved bning n r sikkerhedsafbrydere er ude af funktion. Undg udsaettelse for str ling. Varoitus ! Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina n kym tt m lle laseris teilylle. l katso s

17、 teeseen ! Pour votre s curite, ces documents doivent tre utilis s par des sp cialistes agr s, seuls habilit s r parer votre appareil en panne. ESD SAFETY Bei jeder Reparatur sind die geltenden Sicherheitsvor- schriften zu beachten. Der Originalzustand des Ger tes darf nicht ver ndert werden. F r Re

18、paraturen sind Original- ersatzteile zu verwenden. Sicherheitsbauteile sind durch das Symbol markiert. Les normes de s curit exigent que lappareil soit remis l tat dorigine et que soient utilis es les pi ces de rechange identiques celles sp cifi es. Les composants de s curit sont marqu s CLASS 1 LAS

19、ER PRODUCT DANGER: Invisible laser radiation when open. After servicing and before returning the set to customer perform 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

20、 TO BEAM. f f i i f HANDLING CHIP COMPONENTS 2 - 1 SERVICE TOOLS TORX T10 screwdriver with shaftlength 150mm.4822 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

21、5A (disc with dropout errors, black spots and fingerprints) SBC 426/426A.4822 397 30096 Burn in test disc (65 min. 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 x

22、1.25mm4822 466 10958 anti-static wristband4822 395 10223 connection box (3 press stud connections, 1M)4822 320 11307 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 con

23、nect any product to mat or to connection box) 4822 320 11308 KIT ESD3 (combining all 6 prior products - small table mat)4822 310 10671 wristband tester4822 344 13999 AVAILABLE ESD PROTECTION EQUIPMENT GENERAL Mains voltage -/21/21M : 120 / 230 V -/37 : 120 V -/22/30/33 : 230 V -/25 : 240 V Mains fre

24、quency/25/-/22/30/33 : 50 Hz -/21/21M : 50 / 60 Hz -/37 : 60 Hz Batteryremote : 3 V (R6 x 2) Power consumptionnormal : 60 W Standby : 3 W Dimension (W x H x D): 140 x 231 x 280 mm Weight: 6.7 Kg AMPLIFIER Output powermains : 2 x 8 W Speaker impedance: 2 x 8 ohm Frequency response: 100 Hz - 10 kHz (4

25、dB) TUNER - FM SECTION Tuning range: 87.5 - 108 MHz IF frequency: 10.7 MHz 0.02 MHz Sensitivity: 16 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 -/37 : 530 - 1700 kHz Tuning

26、 range LW : 153 - 279 kHz IF frequency: 450 kHz 1 kHz Sensitivity MW : 3.5 mV/m at 26dB S/N LW : 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 Ch

27、annel crosstalk : 50 dB Channel unbalance: 1 dB TECHNICAL SPECIFICATIONS 2 - 2 SERVICE MEASUREMENT 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 (50

28、Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz). Ri=50 Bandpass 250Hz-15kHz e.g. 7122 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 hav

29、e to be carried out in a Faradays cage. Use a bandpass filter (or at least a high pass filter 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 Au

30、dio Signal Disc SBC429 4822 397 30184 (replaces test disc 3) Use Universal Test Cassette Fe SBC420 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 Controls (illustrations on page 3) C

31、ontrols on the system and remote control 1CLOCK/ RDS for TUNER . displays RDS in formation. for CLOCK. sets the clock function. for TAPE . shows tape counter in recording mode . 2REPEAT/ REV MODE/ BAND for CD . repeats a track/CD programme/ entire CD . for TAPE . selects tape reverse modes. for TUNE

32、R . selects waveband. 3SHUFFLE/ SIDE A/B for CD . plays CD tracks in random order . for TAPE . switches tape direction. 4Display shows the status of the system . 5VOLUME (VOL -/+) adjusts the volume level. on the system only - adjusts the hour and minutes for the clock/timer functions. 6INTERACTIVE

33、SOUND controls: DBB . (Dynamic Bass Boost) enhances the bass. DSC. (Digital Sound Control) selects sound characteristics: CLASSIC/ RO CK/JAZZ/POP. INCREDIBLE SURR. (IS) . creates a super-enhanced stereo effect. 7OPENCLOSE opens tape compartment. 8iR SENSOR infrared sensor for remote control . 9Mode

34、Selection STOP 9. stops CD playback or erase a CD programme. . stops tape playback/recording. PLAYPAUSE . starts or interrupts CD playback. . starts tape playback. . (on the remote control only) during tape playback, switches tape direction. PRESET 34 ( , ) . selects a preset radio station. PREV 1 /

35、 NEXT 2 ( , ) . skips to the beginning of a current track/previous/ subsequent track. ( , ) . fast searches back and forward within a track/CD. . fast rewind/wind tape . TUNING ( , ) . tunes to radio stations. RECORD. starts recording. 0SOURCE SELECT selects the respective sound source for CD/ TUNER

36、/ TAPE /A UX. switches on the system . !STANDBY ON y switches the system to standby/on. on the remote control only - switches the system to standby. PROGRAM for CD . progr ammes tracks and reviews the programme. for TUNER . progr ammes tuner stations manually or automatically . #TIMER ONOFF activate

37、s/deactivates or sets the timer function. $OPENCLOSE opens/closes the CD door. %n connect headphones. REPEAT repeats a track/ CD programme/ entire CD . (on the remote control 2;) to start playback. Current track number and elapsed playing time of the track are displayed during disc playback. 5To int

38、errupt playback press PLAYPAUSE 2; (on the remote control 2;). Press PLAYPAUSE 2; (on the remote control 2;) again to resume play. The display freezes and the elapsed playing time flashes when playback is interrupted. 6To stop disc playback, press STOP 9. Note: CD play will also stop when; the CD door is opened. the disc has reached the end. you select another source: TAPE, TUNER, AUX or standby. Selecting a different track Press PREV 1 or NEXT 2 (on the remote control or ) once or repeatedly until the desired track number appears in the display. If you h