Philips-MCD-295-Service-Manual电路原理图.pdf

Version 1.2MCD290,MCD295©3141 785 30662Service ManualDVD Micro Systemall versionsPublished by LX 0628 Service Audio Printed in The Netherlands Subject to modification©Copyright 2005 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 or by any means, electronic, mechanical, photocopying,or otherwise without the prior permission of Philips.Repair policy of PCBS .1-1Technical specification.2-1Service tools .2-1Service measurement setup.2-2Connections and controls.3-1.3-4Troubleshooting.3-5Disassembly diagram .4-1.4-2Service test program.5-1Set block diagram.5-2Set wiring diagram.5-3DISPLAY BOARDcircuit diagram .6-1layout diagram .6-2CASSETTE BOARDcircuit diagram .7-1layout diagram .7-2MAIN BOARD(for MCD290)circuit diagram .8-1.8-2layout diagram.8-3.8-4MAIN BOARD(for MCD295)circuit diagram .8-5.8-6layout diagram.8-7.8-8MPEG BOARD circuit diagram .9-1.9-3layout diagram .9-4Exploded view diagram.10-1Mechanical partslist .10-2Electrical partslist(for MCD290).11-1.11-2Electrical partslist(for MCD295).11-3.11-4TABLE OF CONTENTSCLASS 1LASER PRODUCTRevision list.12-11 - 1REPAIR POLICY OF PCBSVERSION VARIATIONS:Type /Versions:FeaturesBoard in used:MCD290/MCD295Service policy* TIPS : C - Component Lever Repair.M - Module Lever Repair - UsedCFeature diffrenceRDSVOLTAGE SELECTORECO STANDBY - DARKType /Versions:CCCCCCCC/05 /12 /58DISPLAY BOARDMAIN BOARDCASSETTE BOARDMEPG BOARD M MM/79 /98MCD290/MCD295/05 /12 /58 /79 /98CCCCCCMM2 - 2SERVICE MEASUREMENTBandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTRF Generator e.g. PM5326S/N and distortion metere.g. Sound Technology ST1700BTuner SWTo avoid atmospheric interference all AM-measurements have to be carried out in a Faraday«s cage.Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz).Ri=50Aerial replacementCapacitorR=50Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTS/N and distortion metere.g. Sound Technology ST1700BFrame aeriale.g. 7122 707 89001Tuner AM (MW,LW)To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday«s cage.RF Generator e.g. PM5326Ri=50Low pass filter 22kHzLRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BDUTCDUse Audio Signal Disc SBC429 4822 397 30184 (replaces test disc 3)L.P.F. = 13 th order filter 4822 395 30204FM AntennaIt is unnecessary to connect the FM pigtailantenna since it is fixed to the main unit.Adjust the FM antenna for optimal FM stereo reception. Step 4:Connecting TVIMPORTANT!You only need to make one videoconnection from the following options,depending on the capabilities of your TVsystem. Connect the DVD system directly tothe TV.Using Video In jack (CVBS)1Use the composite video cable (yellow) toconnect the system's VIDEOjack to the videoinput jack (or labelled as A/V In,Video In,Composite or Baseband) on the TV set.2Tohear the sound of this DVD Player throughyour TV, use the audio cables (white/red-notsupplied) to connect LINE OUT (L/R) jacks of the DVD Player to the corresponding AUDIOIN jacks on the TV.ConnectionsStep 2:Connecting speakersConnect the speaker wires to the SPEAKERSterminals,right speaker to “RIGHT“ and leftspeaker to “LEFT“,coloured (marked) wire to“+“ and black (unmarked) wire to “-“.Fullyinsertthe stripped portion of the speaker wire intothe terminal as shown.Notes: Ensure that the speaker cables are correctlyconnected.Improper connections may damage thesystem due to short-circuit.For optimal sound performance, use thesupplied speakers.Do not connect more than one speaker to anyone pair of +/- speaker terminals.Do not connect speakers with an impedancelower than the speakers supplied.Please refer tothe SPECIFICATIONS section of this manual.Step 3:Antenna connectionMW Antenna Connect the supplied MW loop antenna to the “MW AERIAL“ terminal. Adjust the position ofthe antenna for optimal reception.Position the antenna as far as possible from a TV,VCR or other radiation source.ConnectionsStep 1:Placing speakersFrontspeaker ( left )Frontspeaker ( right )VIEWING AREAPlace the front left and right speakers at equaldistances from the TV set and at an angle ofapproximately 45 degrees from the listeningposition. Notes: To avoid magnetic interference, do not positionthe front speakers too close to your TV set.Allow adequate ventilation around the DVDSystem.IMPORTANT!The type plate is located at the rear ofthe system. Before connecting the AC power cordto the wall outlet,ensure that all otherconnections have been made.Never make or change anyconnections with the power switched on.The voltage selector located at thebottom of this system is preset at220V-240V from the factory.Forcountries that operate at 110V-127V,please adjust to 110V-127V before youswitch on the system.Toavoid overheating of the system,asafety circuit has been built in.Therefore,your system may switch to Standbymode automatically under extremeconditions.If this happens,let the systemcool down before reusing it(not availablefor all versions).Speaker(right)Speaker(left)ACpower cordFM wire antennaMW loop antenna54233 - 1CONNECTION AND CONTROLS3 - 2Using an accessory RF modulatorIMPORTANT!If your TV set only has a singleAntenna In jack (or labelled as 75 ohm or RF In),you will need a RF modulator inorder to view the DVD playback via TV.See your electronics retailer or contactPhilips for details on RF modulatoravailability and operations.1Use the composite cable (yellow) to connect thesystem'sVIDEOjack to the video input jack onthe RF modulator.2Use an RF coaxial cable (not supplied) toconnect the RF modulator to your TV's RF jack.ConnectionsUsing S-Video In jack1Use the S-Video cable (not supplied) to connectthe system'sS-VIDEOjack to the S-Videoinput jack (or labelled as Y/C or S-VHS) on theTV set.2Tohear the sound of this DVD Player throughyour TV, use the audio cables (white/red-notsupplied) to connect LINE OUT (L/R) jacks of the DVD Player to the corresponding AUDIOIN jacks on the TV.AUDIO IN R LVIDEOINTO TVANT INCH3 CH4RF coaxial cable to TVBack of RF Modulator(example only)Antenna orCable TV signalConnectionsStep 5:Connecting the powercordIMPORTANT!Never make or change any connectionwith the power switched on.After everything is connected properly, plug inthe ACpower cord to the power outlet.Optional:Connecting additionalequipment IMPORTANT!Some discs are copy-protected.Youcannot record the disc through a VCR ordigital recording device.When making connections,make surethe colour of cables matches the colourof jacks. Always refer to the owner's manual ofthe other equipment for completeconnection and usage details.DIGITAL INCAUDIOINPUTAUDIO OUTL RAUDIO INL RVIDEO INABDViewing and listening to the playback ofother equipment AConnect the system's AUX IN(R/L) jacks tothe AUDIO OUT jacks on the other audio/visualdevice (such as a TV, VCR,Laser Disc player orcassette deck). Before starting operation,press SOURCEonthe front panel to select AUX or press AUXonthe remote in order to activate the input source.Using the VCR for recording DVDs BConnect one of the system's VIDEO OUTjacks to the corresponding VIDEO IN jack andLINE OUT (R/L)jacks to the AUDIO IN jackson the VCR.This will allow you to make analoguestereo (two channel, right and left) recordings.Recording (digital) CConnect the system's COAXIALjack to theDIGITAL IN jack on a digital recording device(such as DTS-Digital Theatre compatible, withDolby Digital decoder).Before starting operation,set the DIGITAL OUTaccording to the audio connection. (See “DIGITAL OUT“.)Connecting an active subwoofer DConnect the DVD micro system'sSUBWOOFER OUTjack to the AUDIOINPUT jack on an activesubwoofer (notsupplied).CONNECTION AND CONTROLS3 - 312 7 9 8 ! 0 %5 4 3 6DISPLAY/ST 2THEATHRE#$1 2 # 7 0 £ 3 ) ( *89In DISC mode, to start or interrupt playback.#VOL +/-adjusts the volume upward/downward.adjusts the hours and minutes in clock/timersetting mode.switches the set timer ON or OFF.$REPEATto repeat a track/disc.%SUBTITLEselects a subtitle language. SLEEPto set the sleep (auto-off) timer function.,í,ëfor example).CONNECTION AND CONTROLSControlsControls on the system1STANDBY ONyswitches the system to standby/on.2iR sensorinfrared sensor for remote control.3CLOCKStandby mode *sets the system clock.Playback mode displays the system clock.4PROGRAMDVD/VCD/CD/MP3-CD: enters the programmenu.Picture CD: during playback,to select a slideshow mode.Tuner: programs preset radio stations.5DISPLAY/STDisc:to select disc information displaymode.FM:to set stereo or mono sound mode.6Mode Selection STOP 9.In DISC mode, to stop playbackor clear a program.PLAY/PAUSE2;.In DISC mode, to start orinterrupt playback.PRESETí/ëDisc: skips to the previous/next chapter/title/track.Tuner: selects a preset radio station.TUNING22/33Tunerpress to tune to a lower/higher radio frequencygradually.press and hold,then release the key to startautomatic search for a radio frequencydownward/upward.Discsearches fast backward/forward in a disc.7Display screento view the current status of the system.8SOURCEto select the respectivesound source : DISCTUNER,TAPE or AUX.9LOUDNESSenables or disables automatic loudnessadjustment.0DBBenables or disables bass enhancement.!DSCselects different types of preset sound equalizersettings (CLASSIC,JAZZ,POP or ROCK).VOLUMEadjusts the volume upward/downward.adjusts the hours and minutes in clock/timersetting mode.in timer setting mode, switches the set timer ONor OFF.#n to connect a headphone.$OPENCLOSE3to open or close the disc door.%Tape Deck OperationRECORD.starts recording.PLAY2.starts playback.SEARCHà/ áfast rewinds/winds the tape.STOPOPENÇ0.stops tape playback/recording;opens the tape compartment.PAUSEÅ.interrupts recording or playback.Controls on the remote control1yswitches the system on/off.2Numeric Keypad (0-9)inputs a track/title/chapter number of the disc.3PROGRAMDVD/VCD/CD/MP3-CD: enters the programmenu.Picture CD: during playback,to select a slideshow mode.Tuner: programs preset radio stations.4 SOURCEto select the respectivesound source : DISCTUNER,TAPE or AUX.5 SYSTEM MENU (disc mode only)to enter or exit the system menubar.3 - 5ProblemSolutionThe language for the sound or subtitlecannot be changed when playing a DVD.No image is output when a function isselected. Sound cannot be heard or is of poorquality Poor radio reception.Recording or playback cannot be madeLeft and right sound outputs arereversed.The remote control does not function.The timer is not workingThe Clock/Timer setting is erasedMulti-language sound or subtitle is not recorded on the DVD.Changing the language for the sound or subtitleis prohibited on the DVD.Makesure the component is connectedcorrectly.Press the correct function button for the inputsource.Adjust the volume.Disconnect the headphones. Check that the speakers are connected correctly.Check if the stripped speaker wire is clamped.If the system is in pause, slowmotion or fastforward/reverse mode, press PLAY/PAUSE 2;to resume the normal play mode.Makesure the MP3-CD was recorded within 32-256 kbps bit rate with sampling frequencies at48 kHz, 44.1 kHz or 32 kHz. Ensure that the DTS disc also supports DolbyDigital output. If the signal is too weak,adjust the antenna orconnect an external antenna for betterreception. Increase the distance between the System andyour TV set or VCR.Clean deck parts,see “Maintenance”.Use only NORMAL tape.Apply a piece of adhesive tape over the missingtab space.Check the speaker connections and location. Point the remote control at the remote controlsensor of the unit. Reduce the distance to the player.Removeany possible obstacles.Replace the batteries with new ones.Check that the batteries are loaded correctly.Set the clock correctly.If recording is in progress, stop it Power has been interrupted or the power cordhas been disconnected.Reset the clock/timer.TroubleshootingWARNINGUnder no circumstances should you try to repair the system yourself,as this willinvalidate the warranty.Do not open the system as there is a risk of electric shock.If a fault occurs,first check the points listed below before taking the system for repair.Ifyou are unable to remedy a problem by following these hints,consult your dealer orPhilips for help.ProblemSolutionTroubleshootingNo power.“NO DISC” is displayed.No picture.Distorted or poor picture.The aspect ratio of the screen cannot be changed even though you have set the TVshape.The DVD player does not start playback.The DVD player does not respond whenbuttons are pressed.Check if the ACpower cord is properlyconnected. Check if the disc is inserted upside down.Wait until the moisture condensed at the lenshas cleared. Replace or clean the disc, see “Maintenance”.Use a readable disc or correctly recorded formatMP3-CD.Select the appropriate video input mode on theTV set. Check if the TV set is switched on.Check the video connection. Check if the system is securely connected.Sometimes a slight picture distortion may appear.This is not a malfunction