Philips-MCM-330-Service-Manual电路原理图.pdf

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1、Version 1.1MCM3303141 785 33951Micro Hi-Fi System-/12Published by LX 0915 Service Audio Subject to modification Copyright 2009 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrievalsystem or transmitted, i

2、n any form or by any means, electronic, mechanical, photocopying,or otherwise without the prior permission of Philips.CONTENTSTechnical specification .1-2Version variation.1-2Service measurement setup.1-3Service aids .1-4Instructions on CD playability .2-1. 2-2Block diagram .3-1Wiring diagram .4-1 D

3、isassembly diagram. .5-1Power boardCircuit diagram .6-1.6-3 Layout diagram .6-4.6-5CD boardCircuit diagram .7-1 Layout diagram .7-2.7-3Display boardCircuit diagram .8-1 Layout diagram .8-2.8-3MCU boardCircuit diagram .9-1Layout diagram .9-2.9-3Key boardCircuit diagram .10-1Layout diagram .10-2Explod

4、ed view diagram .11-1Mechanical parts list .11-2Electrical parts list.12-1.12-2DiscLaser type SemiconductorDisc diameter 12cm/8cmSupport disc CD-DA, CD-R, CD-RW,MP3-CD, WMA-CDAudio DAC 24Bits / 44.1kHzTotal harmonicdistortion75dBATunerTuning range FM: 87.5 - 108MHzTuning grid 50KHzNumber of presets

5、20 FMSpeakersSpeaker Driver 3.5”woofer+0.8” tweeterSensitivity 82dB/m/WGeneral informationAC power (poweradaptor)Input: 100-240V,50/60Hz, 1.5A Max.;Output: 18V 2.5A; Brand name:Philips; Model: OH-1048B1802500U-VDEOperation PowerConsumption20WStandby PowerConsumption65dBMP3 link input 0.5 V RMS 20koh

6、mTECHNICAL SPECIFICATION1 - 2Type /Versions:FeaturesBoard in used:MCM330Service policyDISPLAY BOARD* TIPS : C - Component Lever Repair.M - Module Lever Repair - Used/05 /12 /5589/16/85/Feature diffrenceRDS & DABVOLTAGE SELECTORECO STANDBY - DARK Type /Versions:/05 /12 /5589/16/85/VERSION VARIATION39

7、/39/CCD BOARDKEY BOARDPOWER BOARDUSB & SD CARD BOARDMCU BOARDCCCCCMCM3301-3LF Generator e.g. PM5110RecorderUse Universal Test Cassette CrO2 SBC419 4822 397 30069LEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metee.g. Sound Technology ST170LRDUTor Universal Test Cassette Fe SBC420

8、4822 397 30071LEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BLRDUTCDUse Audio Signal Disc(replaces test disc 3)SBC429 4822 397 30184Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTS/N and distortion metere.g. Sound Technology ST170

9、0BFrame aeriale.g. 7122 707 89001Tuner 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 with 250Hz) to eliminate hum (50Hz, 100Hz).RF Generator e.g. PM5326Ri=50:Bandpass250Hz-15kHze.g. 7122

10、 707 48001LF Voltmetere.g. PM2534DUTRF Generator e.g. PM5326S/N and distortion metere.g. Sound Technology ST1700BUse a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).Ri=50:Tuner FMMEASUREMENT SETUP1-4SERVICE AIDSGB WARNINGAll ICs and many other semi-

11、conductors aresusceptible to electrostatic discharges (ESD).Careless handling during repair can reduce lifedrastically.When repairing, make sure that you areconnected with the same potential as the massof the set via a wrist wrap with resistance.Keep components and tools also at thispotential.ESDCLA

12、SS 1LASER PRODUCTGBSafety regulations require that the set be restored to its originalcondition and that parts which are identical with those specified,be usedSafety components are marked by the symbol!.Lead freeSet remains closed!NYPlay a CD for at least 10 minutesYplayabilityok ?Nplayabilityok ?ad

13、d Info for customer“SET OK“check playabilityNYplayabilityok ?check playabilitycheck playabilityreturn setCustomer complaint“CD related problem“fast“ lens cleaning123For flap loaders (= access to CD drive possible)cleaning method 4 is recommendedINSTRUCTIONS ON CD PLAYABILITY2 - 1Exchange CDM1 - 4 Fo

14、r description - see following pages1PLAYABILITY CHECKFor sets which are compatible with CD-RW discsuse CD-RW Printed Audio Disc.7104 099 96611TR 3 (Fingerprint)TR 8 (600 Black dot) maximum at 01:00 playback of these two tracks without audible disturbanceplaying time for: Fingerprint 10secondsBlack d

15、ot from 00:50 to 01:10 jump forward/backward (search) within a reasonable timeFor all other sets use CD-DA SBC 444A.4822 397 30245TR 14 (600 Black dot) maximum at 01:15TR 19 (Fingerprint)TR 10 (1000 wedge) playback of all these tracks without audible disturbanceplaying time for: 1000 wedge 10seconds

16、Fingerprint 10secondsBlack dot from 01:05 to 01:25 jump forward/backward (search) within a reasonable time2CUSTOMER INFORMATIONIt is proposed to add an addendum sheet to the set whichinforms the customer that the set has been checkedcarefully - but no fault was found.The problem was obviously caused

17、 by a scratched, dirty orcopy-protected CD. In case problems remain, the customeris requested to contact the workshop directly. The lens cleaning (method 3) should be mentioned in theaddendum sheet.The final wording in national language as well as the printingis under responsibility of the Regional

18、Service Organizations.4LIQUID LENS CLEANINGBecause the material of the lens is synthetic and coatedwith a special anti-reflectivity layer, cleaning must be donewith a non-aggressive cleaning fluid. It is advised to use“Cleaning Solvent The actuator is a very precise mechanical component andmay not b

19、e damaged in order to guarantee its full function.Clean the lens gently (dont press too hard) with a soft andclean cotton bud moistened with the special lens cleaner.The direction of cleaning must be in the way as indicated inthe picture below.Before touching the lens it is advised to clean thesurfa

20、ce of the lens by blowing clean air over it.This to avoid that little particles make scratches onthe lens.INSTRUCTIONS ON CD PLAYABILITY2 - 2SET BLOCK DIAGRAMPICK-UP MECHA SANYO : DA23Z1 4 CHMOTOR DRIVER (BA5826) ROHM RF AMP+SSP+DSP (BU9543) MCS LOGIC BX8804MP3/WMA D/E + MCU +USB SOUND CONTROL SW+VO

21、L+EQ (PT2314) POWER AMP ( TDA8932 ) ( 2x10W ) AUX INTPUT DISPLAYVFD SD/USB Device NOR FLASH SST39VF400A SDRAM16Mbit TUNER(FM+RDS)(Si4703)VFD DRIVER PT6324VFD VOLTAGE CircuitKEY Function LIVING SOUND ( TL072 ) LIVING SOUND POWER AMP ( TDA8932 ) ( 2X6W )AC ADAPTERCD PCBKEY PCBUSB PCBMCU PCBPOWER PCBDI

22、SPLAY(VFD) PCB3-1POWER BOARDSPK LSPK RMCU BOARDKEY BOARDVFD BOARDCN4CN8CN6CON3CON4CON6CN1CN2J204J205CN1CN01USB/SD CARD BOARDCD BOARDCDM CONNECT BOARDDC JACK BOARDJ2CM3CN602CN807CN804CM1CN5CN401CON3CM2MOTOR SWITCH BOARDIR BOARDCN806CN402CN4CON1SET WIRING DIAGRAM4-15-1 5-1DISASSEMBLY DIAGRAMDismantlin

23、g of the Rear CabinetDismantling of the PCB Board and CD part A1)Remove 8 screw rubbers.2)Remove 8 screws A as indicated.3)Open the CD door.4)Remove 2 screws B as indicated to loosen the rear cabinet.B FRONT CAB.REAR CAB.CD PARTCDEF G1)Remove 3 screws C as indicated to loosen the Key Board and USB/SD jack Board.2)Remove 5 screws D as indicated to loosen the Power Board.3)Remove 2 screws E as indicated to loosen the DC jack Board.4)Remove 4 screws F as indicated to loosen the CD Board.5)Remove 6 screws G as indicated to loosen the CD mechanismCIRCUIT DIAGRAM - POWER BOARDPART16-1 6-1