NAD-C660-cd-sm 维修电路原理图.pdf

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1、MODEL : C660SERVICE MANUALNADSERVICE MANUALC660C660C660SERVICE MANUALAUDIO CD RECORDERAUDIO CD RECORDERAUDIO CD RECORDERNAD ELECTRONICS INTERNATIONALTORONTONAD 2001NADRadioFans.CN 收音机爱 好者资料库-29-OVERALL WIRING DIAGRAM 1CD-RW BoardANALOG VOLUMECD-P BoardPWR BoardI/O BoardFront BoardH/P & OPT_IN JACK B

2、oard3011211121261205V5VAGNDGNDM12VNC18PICK-UPSLEDSPINDLEPWR_CTL5V(U-COM)12VMDGNDMGND5VMAGND5VAPWR_FAIL19PICK-UPSPINDLE51F4F2F1F36CD-RWLoadLoad126SledDownloadDownload1011301F1CN803CN805LOUTROUTRGNDRINLOUTLGNDLINROUTRGNDRINLOUTLGNDLINROUT61CN805PN105F2F1F2-34VF1-34V-34V-34VGNDFLD_RSTGNDFLD_TXDKEYIN_1R

3、MC_INFLD_CSFLD_CLK5VF5VUKEYIN_2GNDKEYIN_0GNDF2F1F2-34VF1-34V-34V-34VGNDFLD_RSTGNDFLD_TXDKEYIN_1RMC_INFLD_CSFLD_CLK5VF5VUKEYIN_2GNDKEYIN_0GNDF4PN5115. RED1. HP_L.F4P505PN5035. RED1. HP_L.F31.FLD_CS.20.F2PN512F2PN5086. OPT_IN1. NCF26. OPT_IN1. NC11HP_RMPREQNCHP_RGNDHP_LNCGNDFGND345VF-34VPN803615VNCNCN

4、CGNDOPT_INPN8601PN901PN5099. PWR_FAIL.1. PWR_CTLDIG_INMPREQCDR_EMPHCDR_EMPH_OUTCDP_33MGNDP_CLKP_DATAP_LRCKGNDCDP_DOUTSW_STATEP_DAMODGNDDIG_F_INPWR_MUTEGNDM12VAGND5VD1GND-15VGNDREC_TXDREC_RXDGNDOPT_INMCLKCDR_CLKCDR_LRCKGNDS_MCKGNDBCKDATACDR_DATADAMODGNDAD_CLKAD_LRCKAD_DATALRCKCDR_MUTE_OUTXRSTCDP_MUTE

5、_OUTCDP_EMPH_OUTGNDHP_LHP_RPWR_MUTECDR_EMPH_OUTDUB_SELR_DOUTP_DOUTDIG_INEXT_RMCOPT_INMCLKCDR_CLKCDR_LRCKGNDS_MCKGNDBCKDATACDR_DATADAMODGNDAD_CLKAD_LRCKAD_DATALRCKCDR_MUTE_OUTXRSTCDP_MUTE_OUTCDP_EMPH_OUTGNDHP_LHP_RPWR_MUTECDR_EMPH_OUTDUB_SELR_DOUTP_DOUTDIG_INEXT_RMC6. F+.1. 5VF5V61P_DAMODGNDP_DAMODHP

6、_R18PN402CN401CN901PN401PN403GNDEXT_RMCXRSTCDP_MUTECDP_EMPH_OUTGNDHP_LHP_RDGND5VD2+15V+12V-12V1215VGNDCN403CN701CN904PN8901PN507CN201LoadLoadDownloadDownloadPN506PN203P202PN201PN101AC2AC1PN504PN502PN501CN802CN801RadioFans.CN 收音机爱 好者资料库-30-OVERALL BLOCK DIAGRAMDriveextOpticalDigitalRF AmpEPROMAT27LV0

7、10AATMELSERVO DSP+ DECODERSERVO DSP+ ENC/DECMUXMUXSRC CS8420CIRRUSMUXBufferBufferu-COMu-COMANALOGDIGITALOPTICALAUTOCDSVTRACKTOTALREMAINTIMESRCCDRWERASEFINALIZERECORDSYNCDUBBINGCOPY PROHIBITDUALRANDOMPROGREPEAT1ALLRANDOMPROGREPEAT1ALLMP3X2X4HD C DR-A-60-40-20-10-303dBLTITLECHPDVDTRACKTOTALREMAINTIMEA

8、NALOGDIGITALOPTICALAUTOCDSVTRACKTOTALREMAINTIMESRCCDRWERASEFINALIZERECORDSYNCDUBBINGCOPY PROHIBITDUALRANDOMPROGREPEAT1A-BALLRANDOMPROGREPEAT1A-BALLMP3X2X4X2X4HD C DHD C DHD C DR-60-40-20-10-303dBLR R-60-40-20-10-303dB-60-40-20-10-303dBL LTITLECHPDVDTRACKTOTALREMAINTIMEFL DRIVEKEYDrive(Spindle,Focus,

9、Tracking)RF AmpCDPCDRWANALOGPOWERI/OOPTICCOAXFPGASledDACDACADCMUXS/WS/WMUXFPGAHDCD & MP3CS493302CIRRUSAK4393AKMAK5351AKMAK4393AKM-31-BLOCK DIAGRAMS1. CD-Play Block DiagramI / V AMPRF Amplifier(CXA2581N :Sony) Equalizer ALPC Focus Error Tracking ErrorLDDriver- Controller(H8/3062:Hitachi) System Contr

10、ol Read Channel Servo Processor Sled ServoFocus, Tracking(M63021FP: Mitsubishi)SpindlemotorStepping SledmotorPick-up(SF-P151EXV:Sanyo)discDigital Servo Processor(CXD 3030R:Sony) Focus Servo Tracking Servo Spindle Servo EFM decoding CD-DA Decoder ATAPI Interface 1Mbit DRAM 1bit DACFPGA(XC10TQ114:XILI

11、NXXILINX) CDDA/MP3 Switching Serial to Parallel Data conversion CDR -ControllerCDR FPGAHDCD &MP3CDP Dout-32-2. CD-Record Block DiagramI / V AMPLDDriverRF Amplifier(CXA2551R:Sony) Equalizer ALPC Focus Error Tracking Error Wobble DetectSpindleDriver(BA6664: Rohm)LDDriverEncoder/Decoder(OTI9790:OAK Tec

12、hnology) CD-Encode EFM Encode CD-Decode LPM ATIP CLV Control ATAPI I/FDigital Servo Processor Focus Servo Tracking Servo Sled Servo Spindle Servo EFM decodingFPGA(XC30TQ114:XILINXXILINX) CDDA/MP3Switching Serial to Parallel Data conversion - Controller(HD84F/3064:Hitachi) System Control Read Channel

13、 Data Processor Servo ProcessorFocus TrackingSled Driver(BA5983FM : Rohm)SpindlemotorSledmotorPick-up(KRS-200C:Sony)discCPLD(IC310)Audio DAC(AK4393)L/R-CH Jack & HeadphoneMP3, HDCD(CS49300:Cirrus Logic)SRC(CS8420:Cirrus Logic) 8kHz to 96KHz 120dB DynamicRangeCDP-33-3. I/O Block DiagramAK4394(DAC)AK4

14、394(DAC)AK4394(DAC)AK4394(DAC)P-LRCKP-DATAP-BCLKP-LRCKP-DATAP-BCLKMCK(P)MCK(R)74HC04BUFFER74HC04BUFFERANALOG P OUTPUTANALOG R OUTPUTANALOG INPUTCOAXIAL P OUTCOAXIAL R OUTCOAXIAL IN74HC04BUFFER74HC04BUFFER74HC04BUFFER74HC04BUFFEROPTICAL R OUTOPTICAL INRELAYFRONTAK5351(ADC)AK5351(ADC)74HC04BUFFER74HC0

15、4BUFFERBCKDATALRCK74HC04BUFFER74HC04BUFFEROPTICALRECVOL.POWERDOWNMUTEDEMPHMUTEDEMPHCDP-DOUTCDR-DOUTEQ LEVELCDRW-34-CIRCUIT DIAGRAMS1. POWER (SMPS) CIRCUIT DIAGRAM (UL)00. 11.10SI2448(UL)NOTES) WarningNOTES) Parts that are shaded are criticalNOTES) With respect to risk of fire orNOTES) electricial sh

16、ock.NOTES : Symbol denotes AC ground.Symbol denotes DC chassis ground.NOTE : 1. Shaded( ) parts are critical for safety. Replace only with specified part number.2. Voltages are DC-measured with a digital voltmeterduring Play mode.CIRCUIT DIAGRAMS1. POWER (SMPS) CIRCUIT DIAGRAM (EUROPE)-35-NOTE : 1.

17、Shaded( ) parts are critical for safety. Replace only with specified part number.2. Voltages are DC-measured with a digital voltmeterduring Play mode.00. 11. 10SI2674(EUROPE)NOTES) WarningNOTES) Parts that are shaded are criticalNOTES) With respect to risk of fire orNOTES) electricial shock.NOTES :

18、Symbol denotes AC ground.Symbol denotes DC chassis ground.-36-2. CD-PLAY CIRCUIT DIAGRAM-37-3. CD-RECORD 1 CIRCUIT DIAGRAM-38-4. CD-RECORD 2 CIRCUIT DIAGRAM-39-5. CD-RECORD 3 CIRCUIT DIAGRAM-40-6. I/O CIRCUIT DIAGRAM-41-7. FRONT CIRCUIT DIAGRAM-42-PRINTED CIRCUIT BOARD DIAGRAMS1. CD-PLAY TOP P.C.BOA

19、RD2. CD-PLAY BOTTOM P.C.BOARD-43-3. CD-RECORD TOP P.C.BOARD4. CD-RECORD BOTTOM P.C.BOARD-44-5. I/O TOP P.C.BOARDLOCATION GUIDE6 I/O BOTTOM P.C.BOARDLOCATION GUIDE-45-7. FRONT P.C. BOARDLOCATION GUIDE-46-8. POWER P.C.BOARD9. H/P P.C.BOARD-47-EXPLODED VIEW MAIN SECTION259278403403259A00A10A49278403259

20、278403259278260A10-1A43-3A43401276401401401401275403403267264255256268265269405405267A00-1403-1403-1403-2403-1403-1281A47300A43-4-48- CD PLAY SECTION006430009010436014013025020026434431027028029033033435435030034431431035032431012A01A02A00A03011001002031031-49-131127128454132151153152438129439441130

21、150131133154A12A10006430009010436014013020431012A01A02011001002031031 CD RECORD SECTIONNOTE : The # part with location numbers. 150, 151, 152, 153, 154 are notserviceable parts. If you would like to replace these parts, order andreplace the Assembly part(Location No. A12) only.Because these parts ne

22、ed a Mechanical precision adjustment whenreassembling after disassembling.-2-CONTENTSSPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . 2SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . 3ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . 5TROUBLESHOOTING GUIDE . . . . . . .

23、 . . . . . . . . 6OVERALL WIRING DIAGRAM . . . . . . . . . . . . . . 29BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . 31CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . 34PRINTED CIRCUIT BOARD DIAGRAMS . . . . . . . 41EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . .

24、47REPLACEMENT PARTS LIST . . . . . . . . . . . . . . 50SPECIFICATIONSSignal FormatPlayback Sampling Frequency 44.1 kHzD/A Conversion 96kHz, Multi-Bit Delta-Sigma ConversionOversampling 128 TimesPlayback SpecificationsFrequency Response 2Hz 20,050HzPlayback S/N 100dBPlayback Dynamic Range 95dBPlaybac

25、k THD 0.005% / 88dBAnalog Audio Output 2V RMS, 2dB (1KHz 0dB)Digital-Coaxial Output 0.5 Vpp/75Headphone Output 0.5V RMS/32 Load (1KHz 0dB)Record SpecificationsDigital Dubbing Mode (X1/X2/X4)Equal to sourceDigital Input Sample Rate32kHz 96kHzSignal/Noise Ratio - Analog84dBSignal/Noise Ratio - Externa

26、l (Sourse)source-10dBDynamic Range87dBTHD0.005%/-85dBAnalog Input Sensitivity 300 mV RMS 47k = 0dBDigital Inputs (Direct Recording) 44.1kHz, 100 ppm/min.GeneralPower Requirement 100240V AC, 50/60HzPower Consumption 28 WattsDimensionsWidth 17.3/440mmHeight 4.4/112mmDepth 13.9/354mmWeight 14.3 lb/6.5

27、kg-3-SERVICING PRECAUTIONSNOTES REGARDING HANDLING OF THE PICK-UP1. Notes for transport and storage1) The pick-up should always be left in its conductive bag until immediately prior to use.2) The pick-up should never be subjected to external pressure or impact.2. Repair notes1) The pick-up incorpora

28、tes a strong magnet, and so should never be brought close to magnetic materials.2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure andimpact. If it is subjected to strong pressure or impact, the result may be an operational malfunctionand/or damag

29、e to the printed-circuit board.3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reasonthe adjustment point and installation screws should absolutely never be touched.4) Laser beams may damage the eyes!Absolutely never permit laser beams to enter

30、the eyes!Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.5) Cleaning the lens surfaceIf there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as usedfor camera lens). The lens is held by a delicate spring. W

31、hen cleaning the lens surface, therefore, a cot-ton swab should be used, taking care not to distort this.6) Never attempt to disassemble the pick-up.Spring by excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Donot use any other liquid cleaners, because th

32、ey will damage the lens.) Take care not to use too much ofthis alcohol on the swab, and do not allow the alcohol to get inside the pick-up.Storage in conductive bagNEVER look directly at the laser beam, and dont let contactfingers or other exposed skin.MagnetHow to hold the pick-upConductive SheetCo

33、tton swabPressurePressureDrop impact-4-NOTES REGARDING COMPACT DISC PLAYER REPAIRS1. Preparations1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These compo-nents are sensitive to, and easily affected by, static electricity. If such static electricity is hi

34、gh voltage,components can be damaged, and for that reason components should be handled with care.2) The pick-up is composed of many optical components and other high-precision components. Care mustbe taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strong

35、magnetism is present, or where there is excessive dust.2. Notes for repair1) Before replacing a component part, first disconnect the power supply lead wire from the unit2) All equipment, measuring instruments and tools must be grounded.3) The workbench should be covered with a conductive sheet and g

36、rounded.When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This isbecause there is the possibility of damage by static electricity.)4) To prevent AC leakage, the metal part of the soldering iron should be grounded.5) Workers should be grounded by an armban

37、d (1M)6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to preventstatic electricity changes in the clothing to escape from the armband.7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.Resistor(1 Mohm)Conductive

38、SheetResistor(1 Mohm)Armband-5-ESD PRECAUTIONSElectrostatically Sensitive Devices (ESD)Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components com-monly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated

39、cir-cuits and some field-effect transistors and semiconductor chip components. The following techniques shouldbe used to help reduce the incidence of component damage caused by static electricity.1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off

40、any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear acommercially available discharging wrist strap device, which should be removed for potential shock reasonsprior to applying power to the unit under test.2. After removing an electrical assembly eq

41、uipped with ESD devices, place the assembly on a conductive sur-face such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.4. Use only an anti-static solder removal device. Some solder re

42、moval devices not classified as anti-staticcan generate electrical charges sufficient to damage ESD devices.5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESDdevices.6. Do not remove a replacement ESD device from its protective package until immed

43、iately before you areready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together byconductive foam, aluminum foil or comparable conductive materials).7. Immediately before removing the protective material from the leads of a replacement ESD device, touch

44、theprotective material to the chassis or circuit assembly into which the device will by installed.CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALLOTHER SAFETY PRECAUTIONS.8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless m

45、otionsuch as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can gen-erate static electricity sufficient to damage an ESD device).-6-TROUBLESHOOTING GUIDE 1. Initial Lead-in Operation2. Trouble List (Circuit)(In the Initial Lead-in Operation Mode)A. Pic

46、k-Up doesnt move to the inner-track.B. Pick-Up lens doesnt move up and down.C. Disc doesnt rotate.D. The Laser (RED) of Pick-Up doesnt light.E. TOC isnt read.3. Troubleshooting Guide (In the Initial Lead-in Operation Mode)-7-IC503IC503IC505IC505IC505IC502IC502IC50556910IC502IC502IC505 12 W 13 V 13 U

47、?IC502IC502IC505FAO56412-8-IC5012.8IC502,-9-CN401 8 PIN(PWR_MUTE)CN40114 , 15 , 16 PIN INPUT(LRCK, DATA, BCK)IC706IC706IC706Check the CDP partCheck the connection CN401 5 PIN(CDP_MUTE)PINCheck the connection CN40118 PIN (S_MCLK)-10- CN401 8 PIN = H(PWR_MUTE)CN40120 , 21 , 22 PIN Input(R_LRCK, R_DATA

48、, R_CLK)is normalIC704IC704IC704Check the connector CN40124 PIN (MCLK)Check the CDRW partCheck the CDP partCheck the connection CN401 10 PIN(CDR_MUTE)PINNO AUDIO (CDR JACK)-11-TROUBLESHOOTING GUIDE FOR CD-RW BOARDReset or Power Check.Is the Pin 1, 3 of PN403 5V?Is the Pin 5 of PN403 12V?Does the pin

49、1of IC326 change 0V to 5V at the powersupply initial input mode? Check the PN403. Check the SMPS board.YESYESNO Check the IC326 (RESET IC).NOAre the IC405 Pin 4and X302 oscillating?YESIs the pin4 of IC305 3.9V?Is the Pin32 of IC108 2.0V?Is the Pin4 of IC414 3.3V?YESIs the Pin7 of IC210 2.5V?Is the p

50、in1 and 2 of IC210 2.0V?YESIs the pin1 of IC204 8.0V?Is the pin1 of IC205 8.0V?YESCheck the X302, IC405.Check the IC320 (-COM), PN402,Pin 7 (33M).NOCheck the IC305 (BA3939).Check the IC108 (CXA2551R).Check the IC414 (BA033S).NOCheck the IC210 (NJM3414).NOCheck the IC204 (NJM7808).Check the IC205 (NJ