Philips-MC-20-Service-Manual电路原理图.pdf

CLASS 1LASER PRODUCTGB 3140 785 22420Published by SS 0034 Service Audioor otherwise without the prior permission of Philips.system or transmitted, in any form or by any means, electronic, mechanical, photocopying,All rights reserved. No part of this publication may be reproduced, stored in a retrievalCopyright 1995 Philips Consumer Electroncis B.V. Eindhoven, The Netherlandsbe used.condition and that parts which are identical with those specifiedSafety regulations require that the set be restored to its original CPCS 104 581Printed in The Netherlands Copyright reserved Subject to modificationMicro SystemTABLE OF CONTENTSchapterHandling chip components and safety 1 - 1MC-20.Technical Specification ¶press SELECT SOURCEon the system andthe last selected source switches on;¶press CD, TUNER, TAPEor AUX on theremote control. To switch the system to standby, press 2STANDBY ONonce on the system (2onthe remote control).¶If in recording mode, press STOP9(on theremote control 9 ) first.The volume level, interactive sound settings,last selected source and tuner presets will be retained in the player's memory.Power-saving automatic standbyAs a power-saving feature, the systemautomatically switches to standby 15 minutesafter a tape or CD has reached the end and no control is operated.Adjusting volume and sound1Turn the VOLUMEcontrol anti-clockwise todecrease or clockwise to increase volume on thesystem (or press VOLUME-/+on theremote control). Display shows the volume level VOLand anumber from 0-32.2Press the Interactive sound control,DSCon thesystem or remote control once or more to select the desired sound effect:OPTIMAL(noindication)/ROCK() / JAZZ()/POP() .3Press DBBto switch bass enhancement on oroff. Display shows:DBBif the DBB is activated.4Press INCREDIBLE SURROUND(INC.SURR.on the remote control) to switch thesurround sound effect on or off.Display shows:if activated.Note: The effect of INCREDIBLE SURROUND mayvary with different types of music.5Press MUTEon the remotecontrol to interrupt soundreproduction instantly.Playback will continuewithout sound and the displayshows MUTE.¶To activate sound reproduction you can:press MUTEagain;adjust the volume controls;change source.DSDBB MUTESID Å VOLURADIO RECEPTIONPoor radio reception.¶The signal is too weak,adjust the antenna orconnect an external antenna for betterreception.¶Increase the distance from TV or VCR.TAPE DECK OPERATIONRecording or playback cannot be¶Clean deck parts, see Maintenance.made.¶Use only NORMAL (IEC I) tape for recording.“CHECK TAPE” is displayed.¶Apply a piece of adhesive tape over the missingtab space.Tape deck door cannot open.¶Reconnect the ACpower plug and switch onthe system again.GENERAL Does not react when any buttons¶Press STANDBY ON to switch off the system.is pressed.Remove the ACpower plug from the walloutlet,then reconnect the power plug andswitch on the system again.No or poor sound.¶Adjust the volume.¶Disconnect the headphones.¶Check that the speakers are connectedcorrectly.¶Check if the stripped speaker wire is clamped.Reversed left and right sound.¶Check the speaker connections and location.Remote control does not function properly.¶Select the source (CD, TUNER,etc.)before pressing the function button (É,í,ë,etc.).¶Reduce the distance to the system.¶Insert the batteries with their polarities(+/-signs) as indicated.¶Replace the batteries.Timer is not working.¶Set the clock.¶Press TIMER ONOFF to switch on the timer.¶If recording is in progress, stop recording.TroubleshootingWARNINGDo not open the system as there is a risk of electric shock! Under no circumstancesshould you try to repair the system yourself,as this will invalidate the warranty¶If a fault occurs, first check the points listed below before taking the system for repair.¶If you are unable to remedy a problem byfollowing these hints,consult your dealer or service centre.SymptomRemedyCD PLAYER OPERATION“NO DISC” is displayed.¶Check if the disc is inserted upside down.¶Wait until the moisture condensation at the lenshas cleared.¶Use a finalised CD-R(W).¶Replace or clean the disc, see Maintenance.PCS 104 5853-3INSTRUCTIONS FOR USECompact DiscOPEN CLOSESELECT SOURCETIMER ON OFFINTERACTIVE SOUNDSTANDBY ONREPEATRDSDBBDSCPRESETSTOPPLAYPAUSEiRSENSORVOLUMEINCREDIBLE SURR.CLOCKPROGRAMCDPROGRAMSHUFFLETUNINGTUNINGRECORDREV MODE BANDSIDE A/BPREVNEXTIMPORTANT:The lens of the CD player should never betouched.XPlaying a discThis CD player plays Audio Discs including CD-Recordables and CD-Rewritables.¶CD-ROM,CD-I,CDV, VCD, DVD or computerCDs,however, are not possible.1Select CDsource.2Press OPENCLOSEon the topof the system to open the CD compartment.OPEN is displayed when youopen the CD compartment.3Insert a disc with the printed sidefacing up and press down on OPENCLOSEto close the CD door.READ is displayed as the CD player scans thecontents of a disc, and then the total number oftracks and playing time are shown.4Press PLAYPAUSE2;(on the remotecontrol 2) to start playback.Current track number and elapsed playingtime of the track are displayed during discplayback.5To interrupt playback press PLAYPAUSE2;(on the remote control SIDE/;). PressPLAYPAUSE2;(on the remote control 2)again to resume play.The display freezes and the elapsed playingtime flashes when playback is interrupted.6To stop disc playback,press STOP9.Note: CD play will also stop when; the CD door is opened. the disc has reached the end. you select another source:TAPE,TUNER or AUX.Selecting a different track¶Press PREV¡1 or NEXT2 on the system,(on the remote control ¡ or ) once orrepeatedly until the desired track numberappears in the display.¶If you have selected a track number shortly afterloading a disc or in the PAUSE position,you willneed to press PLAYPAUSE 2;(on theremote control 2) to start playback.Finding a passage within a track1Press and hold down on PREV¡1 or NEXT2.The disc is played at high speed and lowvolume.2When you recognise the passage you want,release PREV¡1 or NEXT2.Normal playback continues.Note: During a disc programme or if SHUFFLE/REPEAT active, searching is only possible within thesame track.Different play modes:SHUFFLEand REPEATYou can select and change the various playmodes before or during playback.The playmodes can also be combined with PROGRAMME. SHUFFLE.tracks of the entire disc/ programme are played inrandom orderSHUFFLEand REPEAT ALLto repeat theentire disc/ programme continuously in random orderREPEAT ALL.repeats the entire disc/programmeREPEAT.plays the current trackcontinuouslyCompact Disc1To select your play mode, press the SHUFFLEor REPEAT button before or during playbackuntil the display shows the desired function.2Press PLAYPAUSE2;(on the remotecontrol 2) to start playback if in the STOPposition. If you have selected SHUFFLE,playback startsautomatically.3To return to normal playback,press therespective SHUFFLEor REPEAT button untilthe various SHUFFLE/ REPEAT modes are nolonger displayed.¶You can also press STOP9to cancel your playmode.Programming track numbersProgramme in the STOP position to select andstore your disc tracks in the desired sequence. Ifyou like, store any track more than once. Up to20 tracks can be stored in the memory.1Press PROGRAMon the system or remotecontrol to enter the programming mode.A track number is shown and PROGRAMflashes.2Use the PREV¡1 or NEXT2 on thesystem, (on the remote control ¡ or ) toselect your desired track number.3Press PROGRAMto confirm the track numberto be stored.The number of tracks programmed and totalplaying time of the programme is shown briefly,then the selected track and PROG.4Repeat steps 2-3to select and store all desiredtracks. FULLis displayed if you attempt toprogramme more than 20 tracks.5To start playback of your disc programme, pressPLAYPAUSE2;(on the remote control 2).Reviewing the programmeIn STOP mode, press and hold downPROGRAMon the system or remote control,for a while until the display shows all your storedtrack numbers in sequence.Erasing the programmeYou can erase the programme by:¶pressing STOP9once in the STOP mode;¶pressing STOP9twice during playback;¶opening the CD compartment;PROGRAMdisappears from the display.INSTRUCTIONS FOR USE3-4PCS 104 586TunerPROGRAMINTERACTIVE SOUNDSTANDBY ONSHUFFLEREPEATRDSDBBDSCPRESETSTOPPLAYPAUSEiRSENSORVOLUMEINCREDIBLE SURR.CLOCKTIMER ONOFFTIMERSELECT SOURCEPROGRAMTUNER TUNERTUNINGTUNINGRECORDREV MODE BANDSIDE A/BPREVNEXTTuning to radio stations1Select TUNERsource.TUNERis displayed briefly.2Press BANDonce or more to select yourwaveband.3Press down on TUNINGàor áand releasebutton. The radio automatically tunes to a stationwith sufficient reception.Display indication duringautomatic tuning: SEARCH.If a FM station is received in stereo, STEREOisshown.4Repeat step 3 if necessary until you find thedesired station.¶To tune to a weak station,press TUNINGàor ábriefly and repeatedly until you havefound optimal reception. Programming radio stationsYou can store up to a total of 40 radio stationsin the memory.Automatic programmingAutomatic programming will start with a chosenpreset number. From this preset numberupwards,former programmed radio stations willbe overridden.The system will only programmestations which are not in the memory already.1Press PRESET4or 3 ( ¡ or on theremote control) to select the preset number where programming should start.Note: If no preset number is selected,default is preset(1) and all your presets will be overridden.2Press PROGRAMon the system or remotecontrol for more than 2 seconds to activate programming.AUTOis displayed and available stations areprogrammed in order of waveband receptionstrength:FM followed byMW and LW. The lastpreset automatically stored will then be played.Manual programming1Tune to your desired station (see Tuning to radiostations).2Press PROGRAMon the system or remotecontrol to activate programming.PROGRAMflashes in the display.3Press PRESET4or 3 (¡ or on the remotecontrol) to allocate a number from 1 to 40 tothis station.4Press PROGRAMagain to confirm the setting.PROGRAMdisappears, the preset number andthe frequency of the preset station are shown.5Repeat the above four steps to store otherstations.¶You can override a preset station bystoringanother frequency in its place.Tuning to preset stations¶Press PRESET4or 3 ( ¡ or on theremote control) until the desired preset station is displayed.RDS(some versions only)Radio Data Systemis a service that allowsFM stations to show additional information.Ifyou are receiving a RDS station,and thestation name are displayed.When automatic programming is used,RDSstations will be programmed first.Scrolling through different RDSinformation¶Press RDSbriefly and repeatedly to scrollthrough the following information (if available):Station nameProgramme type such as NEWS, SPORT,POP M.Radio text messagesFrequencyNote: If you press RDS and the RDS signal is notavailable NO RDSis displayed.EON Enhanced Other Networkallows you tosearch for an RDS station offering a certainprogramme type. If EON is available, isshown.Searching programme type(PTY) PTY helps you find a desired programme type.To enable PTY, first programme RDS stationsinto the tuner memory (see Programming radiostations)1While receiving an RDS station, press RDSbriefly until the programme type is displayed.2Press PRESET4or 3 ( ¡or on the remotecontrol) until the desired programme type isdisplayed.3Press and hold down on TUNINGàor á( àor áon the remote control) to startsearching. The radio tunes to a RDS stationbroadcasting this programme type. If theprogramme type is not available TYPE NOTFOUNDis displayed.RDS Programme typesNO TYPE.No RDS programme typeNEWS.News servicesAFFAIRS.Politics and current affairsINFO.Special information programmesSPORT.SportsEDUCATE.Education and advanced trainingDRAMA.Radio plays and literatureCULTURE.Culture, religion and societySCIENCE.ScienceVARIED.Entertainment programmesPOP M.Pop musicROCK M.Rock musicMOR M.Light musicLIGHT M.Light classical musicCLASSICS.Classical musicOTHER M.Special music programmesRDS News and TrafficAnnouncement (TA)You may set up the tuner in such a way thatlistening to CD or tape is interrupted by theNEWS of a RDS station.This only works if theRDS station broadcasts a NEWS signal while sending the news.1Tune to the desired RDS station.2Press NEWS/TA once ormore on the remote control to select the NEWS option.NEWS ON, TA ONor OFFisdisplayed briefly.NEWSis displayed if you haveactivated the NEWS or TA option.Changinglistening source will not disarm the function.Notes: To avoid unwanted recordings, the NEWSannouncement does not work while recording acassette.When you receive RDS news or trafficannouncements during CD playback, playback willpause and you will be able to hear the news/TA.Playback resumes after the broadcast has finished.In tape mode, the tape continues playing but youwill hear the news/TA only until the broadcast hasfinished. If you are using the RDS NEWS announcementwith an EON station, the whole network is searched for the respective news.Disarming RDS News and TrafficAnnouncement There are a number of ways to disarm the newsfeature:¶Press NEWS/TA on the remote control duringreception of the news option.¶Press standby on the system or remote control.¶Tune to a non-RDS-station.TunerSC DENEWS/TAÅINC. SURRUMEPCS 104 5873-5INSTRUCTIONS FOR USETape RecorderTIMER ON OFFPROGRAMINTERACTIVE SOUNDSTANDBY ONSHUFFLEREPEATDBBDSCPRESETSTOPPLAYPAUSEiRSENSORVOLUMEINCREDIBLE SURR.CLOCKSELECT SOURCEPROGRAMTIMER TUNINGTUNINGRECORDREV MODE BANDSIDE A/BPREVNEXTSIDE A SIDE BTIMER ON OFF RDSTape playback1Select TAPEsource.The display shows TAPEbriefly. The tapecounter TAPE 000display with the SIDEA orSIDEB and reverse mode status are then shownduring tape mode.2Press OPENto open the tape door.3Insert a recorded tape and close the tape door.¶Load the tape with the open side downward andthe full spool to the left.4Press PLAYPAUSE2;(on the remotecontrol 2) to start playback.5By pressing àor áon the remote control, fastwinding of tape is possible in both directions.¶Toreview and cue at low volume, press ¡1 or2on the system.¶During fast winding or review/cue you canmonitor the tape message with the tape counter.Release the fast wind/cue control at your desiredpassage.6Tostop the tape, press STOP9 on the systemor remote control.¶Toreset the tape counter, press STOP 9 again.Note: The sound source cannot be changed whilerecording a tape.Switching tape sidesThe tape side can be switched manually orautomatically before or during tape playback.¶Press SIDE A/B(SIDE/; or during playbackonly 2on the remote control).The display shows SIDEA or SIDEB and thetape counter resets to 000.Reverse mode options¶Press