Sharp-CPC662-cs-sm 维修电路原理图.pdf

1 CD-C662No. S4917CDC662/ CONTENTSPageIMPORTANT SERVICE NOTES (FOR U.S.A. ONLY). 2SPECIFICATIONS . 2NAMES OF PARTS . 3OPERATION MANUAL . 5QUICK GUIDE (FOR U.S.A. ONLY) . 6DISASSEMBLY. 7REMOVING AND REINSTALLING THE MAIN PARTS. 10ADJUSTMENT . 10NOTES ON SCHEMATIC DIAGRAM . 13WAVEFORMS OF CD CIRCUIT. 14BLOCK DIAGRAM . 15SCHEMATIC DIAGRAM/WIRING SIDE OF P.W.BOARD.18TROUBLESHOOTING (CD SECTION) . 36FUNCTION TABLE OF IC. 41FL DISPLAY.48REPLACEMENT PARTS LIST/EXPLODED VIEWPACKING OF THE SET (FOR U.S.A. ONLY)CD-C662 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-C662 mini component system consisting of CD-C662 (Main unit)and CP-C662 and (Speaker system).RadioFans.CN 收音机爱 好者资料库CD-C662 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 SCALE 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) Speaker sectionType:2-way type 7-7/8 (200 mm)woofer and 3-1/8 (80 mm)tweeterMaximum input power:300 WRated input power:150 WImpedance:6 ohmsDimensions:Width; 9-13/16 (250 mm)Height; 13 (330 mm)Depth; 13-1/14 (335 mm)Weight:13.4 lbs. (6.1 kg)/eachCP-C662 GeneralPower source:AC 120 V, 60 HzPower consumption:Stand-by; 0.3 WPower on; 210 WDimensions:Width; 10-5/8 (270 mm)Height; 13 (330 mm)Depth; 14-1/8 (358 mm)Weight:22.0 lbs. (10.0 kg) Amplifier sectionOutput power:150 watts minimum RMS perchannel into 6 ohms from 60 Hzto 20 kHz, 10 % total harmonicdistortionOutput terminals:Speakers; 6 ohmsHeadphones; 16-50 ohms(recommended; 32 ohms)CD digital output (optical)Input terminal:Video/Auxiliary (audio signal);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)Specifications for this model are subject to change withoutprior notice.SPECIFICATIONSCD-C662RadioFans.CN 收音机爱 好者资料库 3 CD-C662NAMES OF PARTS Rear Panel38. CD Digital Output Socket39. AC power lead40. FM/AM Loop Aerial Socket41. Video/Auxiliary (Audio Signal) Input Sockets42. Speaker Terminals Front Panel1. Disc Number Selector Buttons2. Disc Tray3. Multi Indicator4. Disc Skip Button5. Open/Close Button6. Extra Bass Indicator7. FM Stereo Mode Indicator8. FM Stereo Indicator9. (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. (CD) Track Down/Review Button(TUNER) Preset Down Button(TAPE 2) Rewind Button20. (CD/TAPE) Stop Button21. (TAPE) Play Button(CD) Play/Repeat Button22. (CD) Track Up/Cue Button(TUNER) Preset Up Button(TAPE 2) Fast Forward Button23. Timer/Sleep Button24. Clock Button25. Timer Set Indicator26. Power Button27. Function Selector Buttons28. Equalizer Mode Selector Button29. Dimmer Button30. Extra Bass/Demo Mode Button31. Headphones Socket32. (TAPE 2) Record Pause Button33. Memory/Set Button34. Tuning and Time Up/Cue Buttons35. Volume Control36. (TAPE 1) Cassette Compartment37. (TAPE 2) Cassette CompartmentCD-C66214 5236789101112131718141516192021332324292825303531223234262737363941384042CD-C662 4 CP-C662 Front Speaker1. Tweeter2. Woofer3. Bass Reflex Ducts4. Speaker Terminals Remote Control1. Remote Control Transmitter LED CD Control section2. Disc Number Select Buttons3. Memory Button4. Pause Button5. Clear Button6. Track Down/Review Button7. Track Up/Cue Button8. Disc Skip Button9. Play/Repeat Button10. Stop Button11. Random Button Tuner control section12. Preset Up/Down Buttons Tape control section13. (TAPE 1) Play Button14. (TAPE 2) Record Pause Button15. (TAPE 1/2) Stop Button16. (TAPE 2) Play Button17. (TAPE 2) Rewind Button18. (TAPE 2) Fast Forward Button Common section19. Equalizer Mode Selector Button20. Function Selector Buttons21. Power Button22. Extra Bass Button23. Volume Up/Down Buttons12431834109567111213 1416 17 182021232152219 5 CD-C662OPERATION MANUALSETTING THE CLOCK1Press 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)Note that this can only be set when the unit is first installedor it has been reset.5Press the MEMORY/SET button.6Press the TUNING/TIME ( or ) button to adjust the hour.Press the TUNING/TIME ( or ) button once to advancethe time by 1 hour. Hold it down to advance continuously.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.Press the TUNING/TIME ( or ) button once to advancethe time by 1 minute. Hold it down to change the time in 5minute intervals.The hour setting will not advance even if minutes advance from59 to 00.9Press the MEMORY/SET button.The clock starts operating from 0 seconds. (Seconds are not displayed.)Note: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:Press the CLOCK button.Within 5 seconds, press the MEMORY/SET button.Perform steps 6 - 9 above.To see the time display:Press the CLOCK button.The time display will appear for about 5 seconds.To change the time display mode:Perform steps 1 - 2 in the section RESETTING THEMICROCOMPUTER, on page 15.Perform steps 1 - 9 above.(Main unit operation)In this example, the clock is set for the12-hour (AM 12:00) system.1212321,2RESETTING THE MICROCOMPUTERReset the microcomputer under the following conditions:To erase all of the stored memory contents (clock and timersettings, and tuner and CD presets).If the display is not correct.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:The operation explained above will erase all data stored inmemory including clock and timer settings, and tuner and CDpresets.CD-C662 6 SPEAKERSLEFTRIGHTRATED SPEAKER INPEDANCE :6 OHMS MIN.MINI COMPONENT SYSTEMQuick Guide/Gua rpidaCD-C662Remote control x 1Controlador remoto x 12 “AA” batteriesDos pilas “AA”Remote SensorSensor remoto2Preparation for use / Preparacin para su uso1Check the supplied accessories / Compruebe los accesorios suministradosFM/AM loop antenna x 1Antena de cuadro deFM/AM x 1Batteries are not included.Las pilas no estn incluidas.8” - 20 (0.2m - 6m)0,2m - 6mSpeaker connectionConexin de los altavocesAntenna connectionConexin de las antenasRight speakerAltavoz derechoLeft speakerAltavoz izquierdoAM Loop AntennaAntena de cuadro de AMFM AntennaAntena de FMAC 120 V, 60 Hz120 V de CA, 60 HzTurning the power on and offConexin y desconexin de la alimentacinRemote controlControlador remotoPOWERSpeaker wire x 2Cable de altavoz x 2RedRojoBlackNegroRedRojoBlackNegroRedRojo15153Listening 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 sonidoLabel facing upEtiqueta hacia arribaTo stop the playbackPara detener la reproduccinTo stop the recordingPara detener la grabacinLoad the disc to be recorded.Introduzca el disco que va a grabar.CD recording starts.La grabacin de CD empieza.VolumeVolumenExtra bass (X-BASS)Graves extra (X-BASS)Pre-programmed equalizerEcualizador preprogramadoFLATHEAVY-1HEAVY-2SOFT-2SOFT-1VOCALTo stop the playbackPara detener la reproduccinTAPE 1TAPE 2TAPE 2VOLUME 7 CD-C662DISASSEMBLYCaution 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 7-2Figure 7-3CD-C6621Top Cabinet1. Screw . (A1) x47-12Side Panel1. Screw . (B1) x87-1(Left/right)3CD Player Unit/1. Turn on the power supply,7-2CD Tray Cover open the disc tray, take out the CD cover, and close. (Note 1)2. Screw . (C1) x13. Hook. (C2) x34. Hook. (C3) x25. Socket . (C4) x34Rear Panel1. Screw . (D1) x57-2(with DigitalOutput PWB)5Main PWB1. Screw . (E1) x18-12. Socket . (E2) x43. Flat Cable . (E3) x16Front Panel1. Screw . (F1) x38-12. Socket . (F2) x17Power Amp. PWB 1. Screw . (G1) x78-22. Socket . (G2) x23. PWB Holder . (G3) x18Power Supply PWB1. Screw . (H1) x48-29Display PWB/1. Screw . (J1) x138-3Switch PWB2. Socket . (J2) x110Tape Mechanism1. Open the cassette holder.8-32. Screw. (K1) x611Turntable1. Screw . (L1) x18-42. Cover . (L2) x112Disc Tray1. Screw . (M1) x28-42. Guide . (M2) x213CD Servo PWB1. Screw . (N1) x18-5(Note 2)2. Socket . (N2) x414CD Changer1. Screw . (P1) x48-6Mechanism15CD Mechanism1. Screw . (Q1) x18-6STEPREMOVALPROCEDUREFIGURENote 1:How to open the changer manually. (Fig. 7-3)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 7-1CD-C662LOCK LEVERTop CabinetFront Panel(A1)x23x12mm(A1)x23x12mmSide Panel(Left)Side Panel(Right)(B1)x23x10mm(B1)x23x10mm(B1)x43x10mmBack Board(D1)x13x10mmCD Tray CoverRear PanelCD PlayerUnitHook(C2) x3(C3) x1(C1) x13x10mm(D1) x13x10mm(D1) x33x6mm(C4) x3112Pull(C3) x1CD-C662 8 Figure 8-1Figure 8-2Figure 8-3Be 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 8-5Figure 8-6Figure 8-4(E2)x2(E3)x1Front Panel(E1)x13x10mm(F1)x33x10mm(F2)x1MainPWBPower Amp.PWB(E2)x1Main PWB(E2)x1Power Amp.PWBPower SupplyPWB(G1)x53x10mm(G2)x2(G1)x23x6mm(H1)x44x8mmPushPush112PullPower Amp.PWB(G3)x1PowerSupplyPWBPowerAmp. PWBMainChassisFront PanelDisplayPWBSwitch PWBOpenCassetteHolderTape Mechanism(J1)x23x10mm(J1)x113x10mm(K1)x63x10mm(J2)x1(M1) x13 x10mm(M1) x13 x10mm(L1) x13 x10mmTurntableDisc Tray(L2) x1(M2) x1(M2) x1CD Player UnitWasher(N1) x13 x10mm(N2) x2(N2) x2CD Player UnitCD Servo PWB(P1) x43 x12mm(Q1) x12.6 x10mmCD ChangerMechanismCD MechanismShift LeverCD Player Base 9 CD-C662CP-C6621Front Panel1. Net. (A1) x19-12. Rubber . (A2) x43. Screw . (A3) x44. Tip . (A4) x29-22Woofer1. Screw . (B1) x49-23Tweeter1. Screw . (C1) x49-2STEPREMOVALPROCEDUREFIGUREFigure 9-1(A1)x1Front Panel(A3)x44x16mm(A2)x4Front PanelTweeter(C1)x43x10mmWoofer(B1)x44x16mm(A4)x2Figure 9-2CD-C662 10 MECHANISM SECTION Driving Force CheckTorque MeterSpecified ValuePlay: TW-2412Tape 1: Over 80 gTape 2: Over 80 g Torque CheckTorque MeterTape 2Play: TW-211130 to 60 g. cm30 to 60 g.cmFast forward: TW-223160 to 120 g.cmRewind: TW-223160 to 120 g.cmSpecifiedValueAdjustingPointInstrumentConnectionTest TapeNormalMTT-111Volume in3,000 Speakerspeedmotor.30 Hzterminal(MM1)(Loadresistance:8 ohms)ADJUSTMENTSpecified ValueTape 1 Tape SpeedTAPE MECHANISMMM 1MotorVolume in motor(A1) x22.6 x5mmLoading/Up/DownMotorMotorPWB(B1) x2 2.6 x6mmShaft(B2) x1Stop Washer(B3) x1Gear(B4) x1CD MechanismPickupHow to remove the pickup (See Fig. 10-2)1. Remove the screws (B1) x 2 pcs., to remove the shaft (B2).2. Remove the stop washer (B3) x 1 pc., to remove the gear(B4).3. Remove the pickup.Figure 10-2REMOVING AND REINSTALLING THE MAIN PARTSCD MECHANISM SECTIONPerform steps 1, 2, 3, 11, 12, 13, 14 and 15 of the disassemblymethod to remove the CD mechanism.How to remove the loading motor(See Fig. 10-1)1. Remove the screws (A1) x 2 pcs., to remove the loadingmotor.Figure 10-1NoteAfter 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 10-3 11 CD-C662 AM IF/RFSignal generator: 400 Hz, 30%, AM modulated*1. Input: Antenna,Output: TP302*2. Input: Antenna,Output: TP301TUNER SECTIONfL: Low-range frequencyfH: High-renge frequencyIF450 kHz1,720 kHzT351*1Band530 kHz