Philips-MCM-166-Service-Manual.pdf

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1、Version 1.4 MCM166 3141 785 33134 Micro Hi-Fi System -/12/55/05/77 Published by LX 1206 Service Audio Subject to modification Copyright 2010 Philips Consumer Electronics B.V. Eindhoven, The Netherlands All rights reserved. No part of this publication may be reproduced, stored in a retrieval system o

2、r transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips. CONTENTS Technical specification .1-2 Version variations .1-2 Service measurement setup.1-3 Service aids .1-4 Instructions on CD playability .2-1.2-2 Disassembly di

3、agram. .3-1 Block diagram .4-1 Wiring diagram .4-2 MCU board Circuit diagram .5-1 Layout diagram .5-2.5-3 Main board Circuit diagram .6-1.6-3 Layout diagram .6-4.6-5 USB board Circuit diagram .7-1 Layout diagram .7-2 Exploded view diagram .8-1 This service manual is only for MCM166/12/55/05/77 This

4、is previous generation models. The serial number is: before LM011039227020(only for/12) before LM001039092086(only for /55/77) Tuner Tuning RangeFM: 87.5 - 108MHz; MW: 531 - 1602kHz Tuning grid50KHz Sensitivity - Mono, 26dB S/N Ratio - Stereo, 46dB S/N Ratio 43 dBf Search Selectivity28dBf Total Harm

5、onic Distortion 55dB Speakers Speaker Impedance 4ohm Speaker Driver3.5”woofer+0.8” tweeter Sensitivity82dB/m/W General information AC power220 - 230V, 50Hz Operation Power Consumption 20W Standby Power Consumption 4W Eco Standby Power Consumption 65dB Aux Input0.5V RMS 20kohm Disc LaserTypeSemicondu

6、ctor Disc Diameter12cm/8cm Support DiscCD-DA, CD-R, CD-RW, MP3-CD,WMA-CD Audio DAC24Bits / 44.1kHz Total Harmonic Distortion 65dBA TECHNICAL SPECIFICATION 1 - 2 Type /Versions: Features Board in used: MCM166(for first generation) Service policy MCU BOARD MAIN BOARD * TIPS : C - Component Lever Repai

7、r. M - Module Lever Repair - Used /05/12/55 89/16/37/ Feature diffrence RDS VOLTAGE SELECTOR ECO STANDBY - DARK C C Type /Versions: MCM166(for first generation) /05/12/55 89/16/37/ VERSION VARIATION 39/ 39/ USB BOARDC C C C C C C 1-3 LF Generator e.g. PM5110 Recorder Use Universal Test Cassette CrO2

8、SBC419 4822 397 30069 LEVEL METER e.g. Sennheiser UPM550 with FF-filter S/N and distortion mete e.g. Sound Technology ST170 L R DUT or Universal Test Cassette FeSBC420 4822 397 30071 LEVEL METER e.g. Sennheiser UPM550 with FF-filter S/N and distortion meter e.g. Sound Technology ST1700B L R DUT CD U

9、se Audio Signal Disc (replaces test disc 3) SBC429 4822 397 30184 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 have

10、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. PM5326 Ri=50? 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 T

11、echnology ST1700B Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz). Ri=50? Tuner FM MEASUREMENT SETUP 1-4 SERVICE AIDS GBWARNING All ICs and many other semi-conductors are susceptible to electrostatic discharges (ESD). Careless handling during re

12、pair can reduce life drastically. When repairing, make sure that you are connected with the same potential as the mass of the set via a wrist wrap with resistance. Keep components and tools also at this potential. ESD CLASS 1 LASER PRODUCT GB Safety regulations require that the set be restored to it

13、s original condition and that parts which are identical with those specified, be used Safety components are marked by the symbol !. Lead free Set remains closed! N Y Play a CD for at least 10 minutes Y playability ok ? N playability ok ? add Info for customer SET OK check playability N Y playability

14、 ok ? check playability check playability return set Customer complaint CD related problem fast lens cleaning 1 2 3 For flap loaders (= access to CD drive possible) cleaning method 4 is recommended INSTRUCTIONS ON CD PLAYABILITY 2 - 1 Exchange CDM 1- 4 For description - see following pages 1 PLAYABI

15、LITY CHECK For sets which are compatible with CD-RW discs use CD-RW Printed Audio Disc.7104 099 96611 TR 3 (Fingerprint) TR 8 (600 Black dot) maximum at 01:00 playback of these two tracks without audible disturbance playing time for: Fingerprint10seconds Black dot from 00:50 to 01:10 jump forward/ba

16、ckward (search) within a reasonable time For all other sets use CD-DA SBC 444A.4822 397 30245 TR 14 (600 Black dot) maximum at 01:15 TR 19 (Fingerprint) TR 10 (1000 wedge) playback of all these tracks without audible disturbance playing time for: 1000 wedge10seconds Fingerprint10seconds Black dot fr

17、om 01:05 to 01:25 jump forward/backward (search) within a reasonable time 2 CUSTOMER INFORMATION It is proposed to add an addendum sheet to the set which informs the customer that the set has been checked carefully - but no fault was found. The problem was obviously caused by a scratched, dirty or c

18、opy-protected CD. In case problems remain, the customer is requested to contact the workshop directly. The lens cleaning (method 3) should be mentioned in the addendum sheet. The final wording in national language as well as the printing is under responsibility of the Regional Service Organizations.

19、 4 LIQUID LENS CLEANING Because the material of the lens is synthetic and coated with a special anti-reflectivity layer, cleaning must be done with a non-aggressive cleaning fluid. It is advised to use “Cleaning Solvent The actuator is a very precise mechanical component and may not be damaged in or

20、der to guarantee its full function. Clean the lens gently (dont press too hard) with a soft and clean cotton bud moistened with the special lens cleaner. The direction of cleaning must be in the way as indicated in the picture below. Before touching the lens it is advised to clean the surface of the

21、 lens by blowing clean air over it. This to avoid that little particles make scratches on the lens. INSTRUCTIONS ON CD PLAYABILITY 2 - 2 DISASSEMBLY DIAGRAM VIEW 3 - 13 - 1 SET BLOCK DIAGRAM 4 - 14 - 1 SET WIRING DIAGRAM 4 - 24- 2 5 - 15 - 1 CIRCUIT DIAGRAM - MCU BOARD 5 - 25 - 2 LAYOUT DIAGARM - MC

22、U BOARD COMPONENT SIDE VIEW 5 - 3 LAYOUT DIAGARM - MCU BOARD COPPER SIDE VIEW 5 - 3 CIRCUIT DIAGRAM - MAIN BOARD AF MW: 531 - 1602kHz Tuning grid50KHz Sensitivity - Mono, 26dB S/N Ratio - Stereo, 46dB S/N Ratio 43 dBf Search Selectivity28dBf Total Harmonic Distortion 55dB Speakers Speaker Impedance

23、4ohm Speaker Driver3.5”woofer+0.8” tweeter Sensitivity82dB/m/W General information AC power220 - 230V, 50Hz Operation Power Consumption 20W Standby Power Consumption 4W Eco Standby Power Consumption 65dB Aux Input0.5V RMS 20kohm Disc LaserTypeSemiconductor Disc Diameter12cm/8cm Support DiscCD-DA, CD

24、-R, CD-RW, MP3-CD,WMA-CD Audio DAC24Bits / 44.1kHz Total Harmonic Distortion 65dBA TECHNICAL SPECIFICATION 1 - 2 Type /Versions: Features Board in used: MCM166( 3rd g eneration) Service policy DISPLAY BOARD MAIN BOARD * TIPS : C - Component Lever Repair. M - Module Lever Repair - Used /05/12/55 89/1

25、6/37/ Feature diffrence RDS VOLTAGE SELECTOR ECO STANDBY - DARK C C Type /Versions: MCM166 ( 3rd g eneration) /05/12/55 89/16/37/ VERSION VARIATION 39/ 39/ 2.0 SAFTETY INSTRUCTIONS GBWARNING All ICs and many other semi-conductors are susceptible to electrostatic discharges (ESD). Careless handling d

26、uring 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 wrist wrap with resistance. Keep components and tools also at this potential. F ATTENTION Tous les IC et beaucoup dautres semi-conducteurs sont sensibles au

27、x dcharges statiques (ESD). Leur longvit pourrait tre considrablement courte par le fait quaucune prcaution nest prise leur manipulation. Lors de rparations, sassurer de bien tre reli au mme potentiel que la masse de lappareil et enfiler le bracelet serti dune rsistance de scurit. Veiller ce que les

28、 composants ainsi que les outils que lon utilise soient galement ce potentiel. ESD DWARNUNG Alle ICs und viele andere Halbleiter sind empfindlich gegenber elektrostatischen Entladungen (ESD). Unsorgfltige Behandlung im Reparaturfall kan die Lebensdauer drastisch reduzieren. Veranlassen Sie, dass Sie

29、 im Reparaturfall ber ein Pulsarmband mit Widerstand verbunden sind mit dem gleichen Potential wie die Masse des Gertes. Bauteile und Hilfsmittel auch auf dieses gleiche Potential halten. NLWAARSCHUWING Alle ICs en vele andere halfgeleiders zijn gevoelig voor electrostatische ontladingen (ESD). Onzo

30、rgvuldig behandelen tijdens reparatie kan de levensduur drastisch doen verminderen. 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. IAVVERTIMENTO Tu

31、tti 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 riparazioni occorre quindi essere collegato allo stesso potenziale che quello de

32、lla massa dellapparecchio tramite un braccialetto a resistenza. Assicurarsi che i componenti e anche gli utensili con quali si lavora siano anche a questo potenziale. “Pour votre scurit, ces documents doivent tre utiliss par des spcia- listes agrs, seuls habilits rparer votre appareil en panne”. GB

33、Safety regulations require that the set be restored to its original condition and that parts which are identical with those specified, be used. NL Veiligheidsbepalingen vereisen, dat het apparaat bij reparatie in zijn oorspronkelijke toestand wordt teruggebracht en dat onderdelen, identiek aan de ge

34、specificeerde, worden toegepast. F Les normes de scurit exigent que lappareil soit remis ltat dorigine et que soient utiliss les pices de rechange identiques celles spcifies. D Bei jeder Reparatur sind die geltenden Sicherheitsvorschriften zu beachten. Der Original zustand des Gerts darf nicht vernd

35、ert werden; fr Reparaturen sind Original-Ersatzteile zu verwenden. I Le norme di sicurezza esigono che lapparecchio venga rimesso nelle condizioni originali e che siano utilizzati i pezzi di ricambio identici a quelli specificati. After servicing and before returning set to customer perform a leakag

36、e current measurement test from all exposed metal parts to earth ground to assure no shock hazard exist. The leakage current must not exceed 0.5mA. CLASS 1 LASER PRODUCT 3122 110 03420 GBWarning ! Invisible laser radiation when open. Avoid direct exposure to beam. SVarning ! Osynlig laserstrlning nr

37、 apparaten r ppnad och sprren r urkopplad. Betrakta ej strlen. SFVaroitus ! Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina nkymttmlle laseristeilylle. l katso steeseen! DKAdvarse ! Usynlig laserstrling ved bning nr sikkerhedsafbrydere er ude af funktion. Undg udsaettelse for strli

38、ng. Caution: These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. 2-1 When?the?power?supply?is?being?turned?on,?you?ma

39、y?not?remove?this?laser?cautions?label.?If?it?removes,?radiation?of?laser may?be?received. 2.1 ESD PROTECTION PREPARATION?OF?SERVICING Pickup?Head?consists?of?a?laser?diode?that?is?very?susceptible?to?external?static?electrocity. Although?it?operates?properly?after?replacement,?if?it?was?subject?to?

40、electrostatic?discharge?during?replacement, its?life?might?be?shortened.?When?replacing,?use?a?conductive?mat,?soldering?iron?with?ground?wire,etc.?to protect?the?laser?diode?form?damage?by?static?electricity. And?also,?the?LSI?and?IC?are?same?as?above. Soldering?iron with?ground?wire or?ceramic?typ

41、e Ground?conductive wrist?strap?for?body. Conductive?mat The?ground?resistance between?the?ground?line and?the?ground?is?less?than?10 1M 2-2 SAFTY NOTICE Plug the AC line cord directly into a 120V AC outlet (do not use an isolation transformer for this check). Use an AC voltmeter, having 5000 per vo

42、lt or more sensitivity. Connect a 1500 10W resistor,paralleled by a 0.15uF 150V AC capacitor between a knomn good earth ground (water pipe, conduit, etc.) and all exposed metal parts of cabinet (antennas, handle bracket, metal cabinet screwheads, metal overlays, control shafts, etc.). SAFTY PRECAUTI

43、ONS LEAKAGE CURRENT CHECK Measure the AC voltage across the 1500 resistor. The test must be conducted with the AC switch on and then repeated with the AC switch off. The AC voltage indicated by the meter may not exceed 0.3V.A reading exceeding 0.3V indicates that a dangerous potential exists, the fa

44、ult must be located and corrected. Repeat the above test with the DVD VIDEO PLAYER power plug reversed. NEVER RETURN A DVD VIDEO PLAYER TO THE CUSTOMER WITHOUT TAKING NECESSARY CORRECTIVE ACTION. READING SHOULD NOT EXCEED 0.3V DVD VIDEO PLAYER AC OUTLET AC VOLTMETER Test all exposed metal. Voltmeter

45、 Hook-up for Leakage Current Check 0.15uF 150V AC 1500 10W (5000 per volt or more sensitivity) Good earth ground such as a water pipe, conduit, etc. The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated dangerous volta

46、ge within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. 2-3 BLOCK DIAGRAM 3-13