Sharp-CDPC672-cs-sm 维修电路原理图.pdf

1 CD-PC672No. S4915CDPC672/ CONTENTSPageIMPORTANT SERVICE NOTES (For U.S.A. Only) . 2SPECIFICATIONS .3NAMES OF PARTS . 4OPERATION MANUAL . 7QUICK GUIDE . 8DISASSEMBLY. 9REMOVING AND REINSTALLING THE MAIN PARTS. 12ADJUSTMENT . 13NOTES ON SCHEMATIC DIAGRAM . 16BLOCK DIAGRAM . 17SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD.20VOLTAGE . 40WAVEFORMS OF CD CIRCUIT. 41TROUBLESHOOTING (CD SECTION) . 42FUNCTION TABLE OF IC. 47FL DISPLAY.54REPLACEMENT PARTS LIST/EXPLODED VIEWPACKING OF THE SET (For U.S.A. Only)CD-PC672 In the interests of user-safety the set should be restored to itsoriginal condition and only parts identical to those specified beused.SERVICE MANUALThis document has been published to be usedfor after sales service only.The contents are subject to change without notice.SHARP CORPORATIONCD-PC672 mini component system consisting of CD-PC672 (mainunit), CP-C672 (front speakers), CP-SW672 (sub woofer),GBOXS0022AWM1 (center speaker) and GBOXS0023AWM1 (rearspeaker).Manufactured under license from Dolby Laboratories Licens-ing Corporation.DOLBY, the double-D symbol and PRO LOGIC aretrademarks of Dolby Laboratories Licensing Corporation.RadioFans.CN 收音机爱 好者资料库CD-PC672 2 FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFERTO THE OPERATION MANUAL.IMPORTANT SERVICE NOTES (For U.S.A. Only)BEFORE RETURNING THE AUDIO PRODUCT(Fire & Shock Hazard)Before returning the audio product to the user, perform thefollowing safety checks.1. Inspect all lead dress to make certain that leads are notpinched or that hardware is not lodged between the chassisand other metal parts in the audio product.2. Inspect all protective devices such as insulating materials,cabinet, terminal board, adjustment and compartment coversor shields, mechanical insulators etc.3. To be sure that no shock hazard exists, check for leakagecurrent in the following manner.* Plug the AC line cord directly into a 120 volt AC outlet.* Using two clip leads, connect a 1.5k ohm, 10 watt resistorparalleled by a 0.15F capacitor in series with all exposedmetal cabinet parts and a known earth ground, such asconduit or electrical ground connected to earth ground.* Use a VTVM or VOM with 1000 ohm per volt, or higher,sensitivity to measure the AC voltage drop across theresistor (See diagram).* Connect the resistor connection to all exposed metal partshaving a return path to the chassis (antenna, metal cabinet,screw heads, knobs and control shafts, escutcheon, etc.)and measure the AC voltage drop across the resistor.All check must be repeated with the AC line cord plug connectionreversed.Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp.AC.) or more is excessive and indicates a potential shockhazard which must be corrected before returning the audioproduct to the owner.TO EXPOSEDMETAL PARTSCONNECT TOKNOWN EARTHGROUNDTEST PROBE0.15 F1.5k ohms10WVTVMAC SCALERadioFans.CN 收音机爱 好者资料库 3 CD-PC672 Front speaker sectionType:2-way 5-1/4 (13 cm) wooferand 2 (5 cm) tweeter typeMaximum input power:80 WRated input power:40 WImpedance:6 ohmsDimensions:Width; 7-7/8 (200 mm)Height; 11-13/16 (300 mm)Depth; 9-7/16 (240 mm)Weight:6.3 lbs. (2.9 kg)/each Center speaker sectionType:4 (10 cm) full-range speakerMaximum input power:40 WRated input power:20 WImpedance:4 ohmsDimensions:Width; 10-1/4 (260 mm)Height; 5-1/2 (140 mm)Depth; 6-1/8 (155 mm)Weight:2.0 lbs. (0.9 kg)/each Rear speaker sectionType:4 (10 cm) full-range speakerMaximum input power:20 WRated input power:10 WImpedance:8 ohmsDimensions:Width; 6-3/4 (170 mm)Height; 3-1/2 (88 mm)Depth; 6-3/4 (170 mm)Weight:1.0 lbs. (0.5 kg)/each Sub woofer sectionType:5-1/4 (13 cm) full-rangespeakerMaximum input power:80 WRated input power:40 WImpedance:6 ohmsDimensions:Width; 7-7/8 (200 mm)Height; 11-13/16 (300 mm)Depth; 11-5/8 (295 mm)Weight:7.5 lbs. (3.4 kg)/eachCP-C672CP-SW672GBOXS0022AWM1 GeneralPower source:AC 120 V, 60 HzPower consumption:Stand-by; 0.3 WPower on; 150 WDimensions:Width; 10-5/8 (270 mm)Height; 11-13/16 (300 mm)Depth; 14-1/4 (362 mm)Weight:17.7 lbs. (8.1 kg) Amplifier sectionOutput power:Front speakers; 40 W minimum (Except for Canada)RMS into 6 ohms from 60 Hz to20 kHz with no more than 10 %total harmonic distortion.Output power:Front speakers;(For Canada)RMS; 80 W (40 W + 40 W)(10 % T.H.D.)Center speaker;RMS; 20 W (10 % T.H.D.)Rear speaker;RMS; 20 W (total)(10 % T.H.D.)Sub woofer;RMS; 40 W(80 Hz 10 % T.H.D.)Output terminals:Front speakers; 6 ohmsCenter speaker; 4 ohmsRear speaker; 8 ohmsSub woofer; 6 ohmsHeadphones; 16-50 ohms(recommended; 32 ohms)CD digital output (optical)Input terminal:Video/Auxiliary (audio signal); 2; 500 mV/47 kohms Tuner sectionFrequency range:FM; 87.5 - 108 MHzAM; 530 - 1,720 kHz Cassette deck sectionFrequency response:50 - 14,000 Hz (Normal tape)Signal/noise ratio:55 dB (TAPE 1, playback)50 dB (TAPE 2, recording/playback)Wow and flutter:0.15 % (WRMS) Compact disc player sectionType:3-disc multi-play compact discplayerSignal readout:Non-contact, 3-beam semi-conductor laser pickupD/A Converter:1-bit D/A converterFrequency response:20 - 20,000 HzDynamic range:90 dB (1 kHz)Specifications for this model are subject to change withoutprior notice.SPECIFICATIONSCD-PC672GBOXS0023AWM1CD-PC672 4 NAMES OF PARTSCD-PC672I Front panel11.Disc Number Selector Buttons12.Disc Tray13.Multi Indicator 14.Disc Skip Button15.Open/Close Button16.Extra Bass Indicator17.FM Stereo Mode Indicator18.FM Stereo Indicator19.(CD) Repeat Indicator10.(CD) Play Indicator11.(CD) Pause Indicator12.Spectrum Analyzer/Volume Level Indicator13.(TAPE 2) Record Indicator14.(CD) Disc Number Indicators15.(CD/TUNER) Memory Indicator16.Timer Play Indicator17.Timer Record Indicator18.Sleep Indicator19.(TAPE 2) Record Pause Button20.(CD) Track Down/Review Button3(TUNER) Preset Down Button3(TAPE 2) Rewind Button21.(CD) Track Up/Cue Button3(TUNER) Preset Up Button3(TAPE 2) Fast Forward Button22.Bypass Button23.Normal Button24.Timer Set Indicator25.Timer/Sleep Button26.Clock Button27.Power Button28.Headphone Socket29.Equalizer Mode Selector Button30.Dimmer Button31.Phantom Button32.Extra Bass/Demo Mode Button 33.Volume Control34.Function Selector Buttons35.Memory/Set Button36.(CD/TAPE) Stop Button37.(TAPE) Play Button3(CD) Play/Repeat Button38.Tuning and Time Up/Down Buttons39.Sub Woofer Volume Control 40.(TAPE 1) Cassette Compartment41.(TAPE 2) Cassette Compartment13425678910111213161714151819 20213522252729263037313233343638 392324284140 5 CD-PC672I Rear panel11.CD Digital Output Socket12.AC Power Lead13.FM/AM Loop Aerial Socket14.Video/Auxiliary (Audio Signal) Input Sockets15.Rear Speaker Terminals16.Centre Speaker Terminals17.Front Speaker Terminals18.Sub Woofer TerminalsI Front speakers11.Tweeter12.Woofer13.Bass Reflex Duct14.Speaker Wire I Centre speaker15.Full-Range Speaker16.Speaker Wire I Rear speaker17.Full-Range Speaker18.Speaker Wire I Sub woofer19.Woofer10.Bass Reflex Duct11.Speaker Wire CP-C672CP-SW672GBOXS0022AWM132145 6 7 81234910115678GBOXS0023AWM1CD-PC672 6 CD-PC672I Remote control 11.Remote Control Transmitter LED12.Surround Level Buttons13.Centre Level Buttons14.Dolby Pro Logic Button15.Centre Mode Button16.Test Tone Button17.Balance Control ButtonsG Tuner control section18.Preset Up/Down ButtonsG CD control section19.Memory Button10.Pause Button11.Stop Button12.Play/Repeat Button13.Clear Button14.Track Down/Review Button15.Random Button16.Track Up/Cue Button17.Disc Skip ButtonG Tape control section18.(TAPE 1) Play Button19.(TAPE 1/2) Stop Button20.(TAPE 2) Record Pause Button21.(TAPE 2) Rewind Button22.(TAPE 2) Play Button23.(TAPE 2) Fast Forward Button24.Equalizer Mode Button25.Function Selector Buttons26.Power Button27.Extra Bass Button28.Volume Up/Down Buttons 17451096811121314241920222115172181623252627283 7 CD-PC672OPERATION MANUALSETTING THE CLOCK 1Press the POWER button to enter the stand-by mode.2Press the CLOCK button.3Within 5 seconds, press the MEMORY/SET button.4Press the TUNING/TIME ( or ) button to select the timedisplay mode.AM 12:00 The 12-hour display will appear. (AM 12:00 - PM 11:59)AM 0:00 The 12-hour display will appear. (AM 0:00 - PM 11:59)0:00 The 24-hour display will appear. (0:00 - 23:59)G Note that this can only be set when the unit is first installedor it has been reset (see page 18).5Press the MEMORY/SET button.6Press the TUNING/TIME ( or ) button to adjust the hour.G Press the TUNING/TIME ( or ) button once to advancethe time by 1 hour. Hold it down to advance continuously.G When the 12-hour display is selected, AM will change auto-matically to PM.7Press the MEMORY/SET button.8Press the TUNING/TIME ( or ) button to adjust theminutes.G Press the TUNING/TIME ( or ) button once to advancethe time by 1 minute. Hold it down to change the time in 5minute intervals.G The hour setting will not advance even if minutes advance from59 to 00.9Press the MEMORY/SET button.G The clock starts operating from 0 seconds. (Seconds are notdisplayed.)Note:G In the event of a power failure or when the AC power cord isdisconnected, the clock display will go out.When the AC power supply is restored, the clock display willflash on and off to indicate the time when the power failureoccurred or when the AC power cord was disconnected.CLOCKPOWERMEMORY/SETTUNING/TIME( )AM 12:00AM 0:000:0023476589If this happens, follow the procedure below to change the clocktime.To change the clock time:xPress the CLOCK button.yWithin 5 seconds, press the MEMORY/SET button.zPerform steps 6 - 9 above.To see the time display:Press the CLOCK button.G The time display will appear for about 5 seconds.To change the time display mode:xPerform steps 1 - 2 in the section RESETTING THE MICRO-COMPUTER, on page 18.yPerform steps 1 - 9 above.(Main unit operation)In this example, the clock is set for the12-hour (AM 12:00) system.RESETTING THE MICROCOMPUTERReset the microcomputer under the following conditions:G To erase all of the stored memory contents (clock and timersettings, and tuner and CD presets).G If the display is not correct.G If the operation is not correct.1Press the POWER button to enter the stand-by mode.2While pressing down the button and the button, hold down the POWER button for at least 1 second.Caution:G The operation explained above will erase all data stored inmemory including clock and timer settings, and tuner and CDpresets.21,2CD-PC672 8 MINI COMPONENT SYSTEMQuick Guide/Gua rpidaCD-PC672G Remote control x 1GControlador remoto x 1G 2 “AA” batteriesGDos pilas “AA”Remote SensorSensor remoto2Preparation for use / Preparacin para su uso1Check the supplied accessories / Compruebe los accesorios suministradosG FM/AM loop antenna x 1GAntena de cuadro deFM/AM x 1G Batteries are not included.GLas pilas no estn incluidas.8” - 20 (0.2m - 6m)0,2m - 6mI Speaker connectionIConexin de los altavocesI Antenna connectionIConexin de las antenasRearspeaker(Right)Altavoztrasero(Derecho)Rearspeaker(Left)Altavoztrasero(Izquierdo)Frontspeaker(Right)Altavozdelantero(Derecho)Frontspeaker(Left)Altavozdelantero(Izquierdo)G AM Loop AntennaGAntena de cuadro de AMG FM AntennaGAntena de FMG AC 120 V, 60 HzG120 V de CA, 60 HzWhite lineLnea blancaRedRojoCenterspeakerAltavozcentralI Turning the power on and offIConexin y desconexin de la alimentacinI Remote controlIControlador remotoPOWERPOWER1515BlackNegroSubwooferAltavoz desubgraves3Listening to a CD / Audicin de discos CD4Listening to a tape / Audicin de una cinta5Listening to the radio / Audicin de la radio6Recording from CDs / Grabaciones de discos CD7Sound control / Control del sonldoG Label facing upGEtiqueta hacia arribaI To stop the playbackIPara detener la reproduccinI To stop the playbackIPara detener la reproduccinG Load the disc to be recorded.GIntroduzca el disco que va a grabar.G CD recording starts.GLa grabacin de CD empieza.I VolumeIVolumenI Extra bass (X-BASS)IGraves extra (X-BASS)I Pre-programmed equalizerIEcualizador preprogramadoVOLUMEFLATHEAVY-1HEAVY-2SOFT-2SOFT-1VOCALI To stop the playbackIPara detener la reproduccinTAPE 1TAPE 2TAPE 2I Sub woofer volumeIVolumen de subgraves 9 CD-PC672DISASSEMBLYCaution on DisassemblyFollow the below-mentioned notes when disassemblingthe unit and reassembling it, to keep it safe and ensureexcellent performance:1. Take cassette tape and compact disc out of the unit.2. Be sure to remove the power supply plug from the walloutlet before starting to disassemble the unit.3. Take off nylon bands or wire holders where they need tobe removed when disassembling the unit. After servicingthe unit, be sure to rearrange the leads where they werebefore disassembling.4. Take sufficient care on static electricity of integratedcircuits and other circuits when servicing.Figure 9-2Figure 9-3CD-PC6721Top Cabinet1. Screw . (A1) x49-12Side Panel1. Screw . (B1) x89-1(Left/right)3CD Player Unit/1. Turn on the power supply,9-2CD Tray Cover open the disc tray, take out the CD cover, and close. (Note 1)2. Hook. (C1) x33. Hook. (C2) x24. Socket . (C3) x35. Screw . (C4) x24Back Board1. Screw . (D1) x69-2(with Digital2. Socket . (D2) x1Output PWB)5Main PWB1. Socket . (E1) x210-12. Flat Cable. (E2) x13. Flat Wire. (E3) x16Power PWB1. Screw . (F1) x410-12. Socket . (F2) x43. Holder PWB . (F3) x57Front Panel1. Screw . (G1) x210-18Display PWB/1. Screw . (H1) x1310-2Switch PWB2. Support Bracket . (H2) x1Headphones PWB9Tape Mechanism1. Open the cassette holder.10-22. Screw. (J1) x63. Socket . (J2) x110Turntable1. Screw . (K1) x110-32. Cover . (K2) x111Disc Tray1. Screw . (L1) x210-32. Guide . (L2) x212CD Servo PWB1. Screw . (M1) x110-4(Note 2)2. Socket . (M2) x413CD Changer1. Screw . (N1) x410-5Mechanism14CD Mechanism1. Screw . (P1) x110-5STEPR EMOVALPROCEDUREFIGURENote 1:How to open the changer manually. (Fig. 9-3)1. Change, turn fully the lock lever in the arrow directionthrough the hole on the loading chassis bottom in this state.After that, push forward the CD player base.Note 2:1. After removing the connector for the optical pickup from theconnector, wrap the conductive aluminium foil around thefront end of connector to protect the optical pickup fromelectrostatic damage.Figure 9-1CD-PC672LOCK LEVERTop Cabinet(A1)x23x12mm(A1)x23x12mmSide Panel(Left)(B1)x23x8mm(B1)x23x10mm(B1)x43x10mmBack Board(D1)x43x10mm(D2)x1(D1)x23x10mmBack BoardCD Tray CoverMain PWBCD PlayerUnitHook( C1) x3(C2) x1(C4) x13x10mm(C4) x1(C3) x3112Pull(C2) x1CD-PC672 10 Figure 10-1Figure 10-2Figure 10-3Be careful when installing the CD changer mechanism.Install the CD changer mechanism on the CD player base afterthe shift lever has been set in the highest position.Figure 10-4Figure 10-5( L1 ) x13 x10mm( L1 ) x13 x10mm( K1 ) x13 x10mmTurntableDisc Tray( K2 ) x1( L2 ) x1( L2 ) x1CD Player UnitWasher( M1 ) x13 x10mm( M2 ) x2( M2 ) x2CD Player UnitCD Servo PWB( N1 ) x43 x12mm( P1 ) x12.6 x10mmCD ChangerMechanismCD MechanismShift LeverCD Player BaseFront PanelDisplay PWB(H2)x1Switch PWBOpenCassetteHolderTape Mechanism(H1)x23x10mm(H1)x103x10mm(H1)x13x10mm(J1)x63x10mm(G1)x23x10mmHeadphonesPWB(J2)x1(F1)x33x10mm(E1)x2(F3