Philips-MCM-2050-Service-Manual电路原理图.pdf

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1、Version 1.03142 785 36560Micro music systemPublished by LZ1129 Service Audio Subject to modificationCopyright 2011 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 o

2、r by any means, electronic, mechanical, photocopying,or otherwise without the prior permission of Philips.CONTENTS5-1.1-1.noitacificepslacinhceTVersion Variation.2-1Block diagram.3-1Wiring diagram .3-2LCD + DC + MP3 + KEY boardLayout diagram.4-2 4-3MAIN boardCircuit diagram .5-1Layout diagram.5-2.5-

3、3Exploded view diagram .6-1Circuit diagram .4-1MCM2050/05/12TECHNICAL SPECIFICATION1-16GENERAL DESCRIPTIONMicro Hi-Fi System with PLL Tuner , CD-MP3, USB 10W * 2MP3 LINK , Remote ControlX7LIFETIME : 7 YearsClass Tuner Supply + Amplifier Loudspeaker Boxes Clock MP3 LINKCDUSBXXIXXIIIII X X8 10SAFETY r

4、equirementsVersion Safety EMCPage 9 4,5 4/12/05/79 EN55013IEC60065RADIATION / IMMUNITY requirments ( EMC )ALL climates : + 5 Dregree till + 35 DegreeMODERATE climates : + N.A till N.A DegreeCLIMATIC requirements PERFORMANCE CLASSESPOWER SUPPLYMAINS ( A.C. ) 100/240 Vac(AC/DC Adaptor)Version /12/05/7

5、9Voltage Selection NOFrequency 60/50HzPOWER CONSUMERMCM2050/12/05/79( DEMO mode “ OFF “ ) , NOM. A, INPUTStadby : 1/8 Prated , NOM. A, INPUTMaximum : /Q and R according to Product Division RulesQuality : 0.4 % ( Major ) 1.5 % ( Mirror )Reliability : 2.0 % ( C 42 )ECO Power mode : /Tested according t

6、o General Test Instruction refer to PHILIPS standary ( UAN -D1591 )Measured according to PHILIPS standary ( UAN - L1059 ) unless other wise statedAll not mentioned date, please refer to PHILIPS standary ( XUW - 0010 - jun 2001)1-2TECHNICAL SPECIFICATION:TECHNIAL DESCRIPTIONTotal power 20W, matching

7、LOUDSPEAKER of 2 x6 R. TWO INPUT SOURCE, ( Digital Sound Control )GENERAL PARTStandby Mode Indicator : LCD display Clock active, LED backlight turn ONOUTPUT stage Protection : Yes Temperature : YES Shorcircuit : YesLoudSpeaker D.C. Protection : Yes.INDICATORSHum ( Volume Minimun - ) = 60dBA ( A - we

8、ighted )( 100 - 16,000 Hz ) = 55dBA ( A - weighted )Frequency Response ( 5dB+/- 3dB ), reference 1kHz 100Hz - 16kHzTHD + Noise ( 0dB, 1Khz ) = 35 dB( 0 dB, 1 KHz ) = 40 dBOutput Resistance = 1.5 kOhmOutput Voltage RL = 33 k ohm ( )dB, 1 Khz ) 830mVrms +/- 1.5dBChannel Unbalance = +/- 3 dBGENERAL PAR

9、TMeasurement are directly done at the connector on CDC boardDescription SpecificationTECHNIAL DESCRIPTIONUSBSee also SH 190 USB Audio Module (300605)Measurment are directly done at the coonector on the boardTECHNIAL DESCRIPTIONCD + MP3 - Part SpecificationsCD mechnism refer to Philips standard speci

10、fication Measurement are directly done at the connector on CDC boardGENERAL PARTDescription Extern Nom Lim UnitOhmsOutput Voltage - Unloaded ( 0dB , 1 kHz ) No 0.5 1 VrmsOutput Resistance No 100 dBFrequency Response ( 125 Hz - 16 kHz ) No 5 3 dBChannel Unbalance No 2dBSignal to Noise Ratio ( A - wei

11、ghted ) Yes 65 55 dBASignal to Noise Ratio ( Unweighted ) Yes 60 50dBCrosstalk ( 125Hz to 16kHz ) No 36 30 dBCrosstalk ( 1kHz ) Yes 65 55nWEmphasis - / / /Hum fr Reparaturen sind Original-Ersatzteile zu verwenden.ILe norme di sicurezza esigono che lapparecchio venga rimessonelle condizioni originali

12、 e che siano utilizzati i pezzi di ricambioidentici a quelli specificati.“After servicing and before returning set to customer perform aleakage current measurement test from all exposed metal parts toearth ground to assure no shock hazard exist. The leakage currentmust not exceed 0.5mA.“CLASS 1LASER

13、 PRODUCT3122 110 03420GB Warning !Invisible laser radiation when open.Avoid direct exposure to beam.S Varning !Osynlig laserstrlning nr apparaten r ppnad och sprrenr urkopplad. Betrakta ej strlen.SF Varoitus !Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiinankymttmlle laseristeilylle

14、. l katso steeseen!DK Advarse !Usynlig laserstrling ved bning nr sikkerhedsafbrydere erude af funktion. Undg udsaettelse for strling.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.2-2SET BLOCK DIAGRAM3 - 1 3 - 1WIRE CONNECT DIAGRAM3-2 3-2