NAD-C521i-cd-sm 维修电路原理图.pdf

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1、NADC 521iCOMPACTDISC PLAYERC 521iCOMPACTDISC PLAYERSERVICE MANUALRadioFans.CN 收音机爱 好者资料库2CATUION HGKJDHSGKJHGSJKADVARSEL HGKJDHSGKJHGSKBVNCLKNBCVLKNLKNVLKNCVNCLVK JKADVARSEL HGKLFH;L;HJMNMDHFKLJHJLDKLJLKDJLKFHJHSGMMKJHGSJKVARING HGKJDHSGKJHGKLGDJHKLHKFG;LKNG;LKJGF;LKJGF;LKJFL;SJKVARO! HGKJDHSGKJHJBJ

2、KBKJBJKGSKBVNCLKNBCVLKNLKNVLKNCVNCLVK JKVORSICT! HGKLFH;L;HHBHHJDJHFKLJHJLDKLJLKDJLKFHJHSGKJHGSJKSAFETY INFORMATIONCAUTIONCAUTION- INVISIBLE LASER RADIATION WHEN OPEN ANDINTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.ADVARSEL- USYNLIG LASERSTRLING NR DEKSELPNES OGSIKKERHEDSLS BRYTES. UNNG EKSPONERING F

3、OR STRLEN.ADVARSEL- USYNLIG LASERSTRLING VED BNING, NRSIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. UNDGUDSTTELSE FOR STRLING.VARING- OSYNLING LASERSTRLNING NR DENNADELRPPNAD OCH SPRRAR R URKOPPLADE. STRLEN R FARLIG.VARO!- AVATTAESSAJASUOJALUKITUS OHITETTAESSAOLETALTTIINANKTMTNT LASERSTEILYLLE. L KAISOSTE

4、ESEEN.VORSICT!- UNSICHTBARE LASERSTRAHLUNG TRITTAUS, WENNDECKELGEFFNETUND WENN SICHERHEITSVERRIEGELUNGBERBRCKTIST. NICHTDEM STRAHLAUSSETZEN.THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:-(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND

5、(2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED,INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIREDOPERATION.The lightning flash with arrowhead, within an equilateral tri-angle is intended to alert the user of the presence ofuninsulated dangerous voltage within the productsenclosure; that may be o

6、f sufficient magnitude to consti-tute a risk of electric shock to persons.The exclamation point within an equilateral triangle is intend-ed to alert the user of the presence of important operatingand maintenance (servicing) instructions in the literatureaccompanying the appliance.CLASS 1LASER PRODUC

7、TRadioFans.CN 收音机爱 好者资料库3SERVICE SAFETY PRECAUTIONS1.Replacing the fusesCAUTION: FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPEOF FUSE.Reference NoPart NumberDescriptionM502-M504 *AH 5120-0020-0FU T1A 250V UL/CSA 5x20MMM502-M504 *C 5120-0018-0FU T1A 250V SEMKO/UDE 5x20

8、MMM505 *AH 5120-0052-0FUSE T1.6A 250V 5x20MM UL/CSAM505 *C 5120-0050-0FUSE T1.6A 250V 5x20MM SEMKO/VDENOTE: : USA, CANADIAN MODEL ONLY. : EUROPEAN MODEL ONLY.2.Safety check out(Only U.S.A. model)Before returning the product to the customer, make leakage current or resistance measurements to determin

9、e thatexposed parts are acceptably insulated from the supply circuit.Parts marked with the symbol are critical with regard to the risk of fire and electric shock.Replace only with parts recommended by the manufacturer.CONTENTSDESCRIPTIONPAGESPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . .

10、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4REAR PANEL / FRONT PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11、. . . . . . .6BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8RF PATTERN TESTING . . .

12、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9IMPORTANT NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-11PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13、 . . . . . . . . . . . . . . . . . . . . . . . . . . .12-14SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-21IC BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14、. . .22-25TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27-31MECHANISM EXPLODED VIEW . . . . . . . . . . . . .

15、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32MECHANISM EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16、. .35EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35PACKING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .364SPECIFICATIONSDisc Capacity . . . . . . . . .

17、 . . . . . . . . . . . . . . . . . . . . . . . . . . .One Disc, 120 or 80 mmDecoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BURR-BROWN Delta Sigma 20bitDigital Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Times oversampleAn

18、alog Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 pole activeFrequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+/- 0.5 dB, 5Hz - 20kHzDe-Emphasis Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+/- 0.3 dBTHD (at 0

19、dB, 1kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.003%Intermodulation Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . .90 dB10 kHz . . . . . . . . . . . . . . . . . . . . . . . .80 dBWow and Flutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20、 . .Unmeasurable (Quartz Crystal Accuracy)Output Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200 Output Level at 0 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.1 V rmsDigital Error Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I

21、RC with double error correction in C1 and C2Digital Code Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sony / Philips Serial data formatPower Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12WCONTROLSPlay / Pause, Stop, Random, Skip (), Scan (), Open

22、, Time, Repeat.PHYSICAL SPECIFICATIONSDimensions435 x 80 x 285 mm(Width x Height x Depth)Net weight4 kg (8.8 lbs)Shipping weight5.1 kg (11.22 lbs)5i11.LINE OUT2.DIGITAL OUT3.AC LINE CORD1. POWER ON / OFF2. DISC DRAWER3. DISPLAY4. OPEN5. PLAY / PAUSE6. TIME7. STOP8. REPEAT9. RANDOM10. SCAN Back () /

23、Forward ()11. SKIP Back () / Forward ()12. STANDBY LEDi1iREAR PANEL / FRONT PANELREAR PANELFRONT PANEL6DISASSEMBLY INSTRUCTIONS1. Remove machine screws M 4.0 x 6.0 ( 1 to 4 ) from the side panels.Remove tapping screw 3.0 x 8.5 ( 5 )from the back panel.Refer to Figure No.1.Figure No.12. Pull both sid

24、es of the TOP COVER slightly outwards 6 and tilt approx. 35 and then removein the direction as indicated by the arrow 7 . Refer to Figure No.2.Figure No.2.543127667BLOCK DIAGRAMU401 M38223E4HP4SYSTEM CONTROL CPU& LCD DISPLAY DRIVERQ401- Q405MUTE CIRCUIT Q301-Q304 MUTEM317RCAJACK U302PMC1710M318RCA J

25、ACKDIGITALOUTPUTM501*LCD DISPLAY87272221351783512161336162635143394046453824129243660LRLRCD AUDIOO/P121528161861U301CXD3017QDIGITALSIGNALPROCESSOR26127212161317U101 CXA2581ANALOG SIGNALPROCESSOR/SERVORFACRFDCFESEQ104Q107MOTOR DRIVERU201 BA6392FOCUS & TRACKINGMOTORDRIVERLOADINGMOTORLOADING MOTORLIMIT

26、 SWITCH SPINDLEMOTORSLEDMOTORPU-INLIMIT SWITCHPICKUPDISCM113REMOTESENSORCD MECHANISM UNITPOWERTRANSFORMERAC POWER I / PKEYBOARDM110M109REPEATM105M108M107RANDOMM102M106M104M103TIMEM101Q101DACU306U30511U501,U507DIGITALPOWERU502-3,U506ANALOGUEPOWER+8V+5V+12V5V-12VD514-D517RECTIFIERDIODESD501-D504RECTIF

27、IERDIODESD506RECTIFIERDIODESU504POWER FOREL LIGHTM502EL LIGHTQ307,Q309Q312,Q313RL101RELAYU40374HC00NAND GATEM303EMC FILTERL301DIGITAL COILM50018WIRING DIAGRAM115V:J401,J404230V:J403L401J403J406J407J402J404J4011723-006A-00008V0V0V8V15V0V15VISSUE BM120CM505BM301LIVENEUTRALM500AM102(16PIN)M105(6PIN)M50

28、5ACD MECHANISMTRANSFORMER BOARDDISPLAY BOARDKEY BOARDLIVE BOARDM101(5PIN)TO CHASSISM805BROWNM803BROWN9RF PATTERN TESTINGTestingPointNAD - C 521i PCB TESTING POINTS DIAGRAMTESTING PROCEDURE(1) Load the test disc (Sony Test CD YEDS-7) and set the unit into PLAY mode.(2) Connect the scope to R227 (Pin

29、15 of U101) and DGND (J144).Scope setting:Coupling: AC.Vertical sensitivity: 0.2 V/ div.Horizontal time base: 0.5 S/div.(3) Observe the waveform is 2.0V p-p +/-5% and the eye pattern is at its best shape (see FIG. 1).FIG. 1 (a)FIG. 1 (b) Poor eye patternFIG. 1 (C) Good eye pattern3T 4T5T 11T10IMPORT

30、ANT NOTESINSTRUCTION FOR HANDLING OPTICAL SYSTEM BLOCK PICK-UPElectrostatic breakdown of the laser diode in the optical system block may occur due to a potential difference causedby electrostatic charge accumulated on clothing, human body, etc. A ground must be provided as follows to preventany elec

31、trostatic charge during unpacking or repair work.1. Ground for Human BodyBe sure to wear a ground band (1M ohm) that is properly to remove any static electricity that may be charged on thebody.2. Ground for Work BenchBe sure to place a conductive sheet (1M ohm) or copper plate with proper grounding

32、on the work bench or other sur-face on which the pick-up is to be placed.3. Because the static electricity charge on the clothing does not discharge through the body grounding band, do notlet clothing to get in contact with the pick-up unit. PRECAUTIONS FOR CHECKING BEAM EMISSIONThe laser beam of th

33、is unit is focused on the reflecting surface of the objective lens in the optical system block.Therefore, keep your eyes at least 12 inches (30 cm) away from the objective lens when the laser diode is ON.(Operation Check Method for Laser Diode and Focus Search Function.)When the POWER switch is turn

34、ed ON after the chucking plate is removed, observe the objective lens and confirmthat the following operations are performed properly.(The optical system should be at the lead-in area position when it is checked at this time.)(1) The laser should be at the innermost position after the chucking plate

35、 is removed.(2) The diffused light of the laser beam can be seen when the POWER switch is turned ON.(3) Vertical (up and down) movement of the objective lens (2 or 3 times) will take place.INCORRECTCORRECTNOTE: Laser diodes are so susceptible to damage fromstatic electricity that even if a static di

36、scharge does notruin the diode, it can shorten its life or cause it to workimproperly.1.Grounding band1M ohm1M ohm2.Conductive Sheetor Copper Plate11PRECAUTIONS WHEN CHANGING LASER PICK-UPWhen removing the pick-up assembly, short circuit the PCB tracks on the optical block as show in the drawing ino

37、rder to protect the pick-up before removal.NOTE: Replacement pick-up assemblies are supplied with the PCB pattern already protected.DO NOT REMOVE THE SHORT CIRCUITS UNTIL YOU HAVE FINISHED FITTING THE PICK-UP.Caution:Laser diodes are extremely susceptible to damage from static electricity. Even if a

38、 static discharge does not ruin thediode, it can shorten its life or cause it to work improperly. When replacing the pick-up, use a conductive mat, agrounded soldering iron, and so on, to protect the laser diode from static damage.Ground ConductiveWrist Band for BodyGround LineLess than10 ohmConduct

39、ive Gum MatSolderingIron withGroundwireProtective soldering placefor laser diode12PCB LAYOUTDISPLAY BOARDKEY BOARDLIVE BOARDLED BOARD1413MAIN BOARD1516SCHEMATIC DIAGRAMDISPLAYSL+1SL-2RCIN13SRDR4SFDR5VREFI6VREFO7GND8FRDR9FFDR10RCIN211FCS+12FCS-13GND114MUTE15TRK+16TRK-17RCIN318TFDR19TRDR20VCC21VCC122V

40、BIN23SPDR24VBIN125SP-26SP+27GND228GND29GND30U201BA6392SQSO1SQCK2XRST3SYSM4DATA5XLAT6CLOK7SENS8SCLK9VDD10ATSK11SPOA12SPOB13XLON14WFCK15XUGF16XPCK17GFS18C2PO19SCOR20COUT21MIRR22DFCT23FOK24LOCK25MDP26SSTP27SFDR28SRDR29TFDR30TRDR31FFDR32FRDR33VSS34TEST35TES136XTST37VC38FE39SE40TE41CE42RFDC43ADIO44AVSS04

41、5IGEN46AVDD047ASYO48ASYI49BIAS50RFAC51AVSS352CLTV53FILO54FILI55PCO56AVDD357VSS58VDD59DOUT60LRCK61PCMID62BCK63EMPH64XVDD65XTAI66XTAO67XVSS68AVDD169AOUT170AIN171LOUT172AVSS173AVSS274LOUT275AIN276AOUT277AVDD278RMUT79LMUT80U301CXD3017QR2014K7R2021KR2031KR2041KR2051KR2061KR2071KR2081KR2091KR2101KR2111KR2

42、12 100KR213 10KR214 8K2R2154R7R2160RR2171KR21815KR21915KR220100KR2220RR22333KR22410KR225100KR2261MR227100R2283K3R2293K3R23010KC2070.1uC2080.1uC2091500pC2100.1uC21127pC21227pC214470pC215470pC2130.1uXLATDATASYSMXRSTSQCKSQSO/SQSO/SQCK/XRST/SYSM/DATA/XLAT/CLOK/SENS/SCLK/GFS/SCOR/SQSO/SQCK/XRST/SYSM/DATA

43、/XLAT/CLOK/SENS/SCLK/GFS/SCORV3V6C201220pC202220pC2030.01uC204220pC205220pC206330pCLOKSENSSCLKGFSSCORCLOKSENSSCLKGFSSCORV3V6VCSFDRSFDRSRDRSRDRTFDRTFDRTRDRTRDRFFDRFFDRFRDRFRDRSPDRSPDRVCVCC229470U/16VTESEFEFESETEC2170.1uC2160.01uC2190.47uV3V6C218100pV3V6C221103KRFDCRFACC2200.47uC2231500pV3V6C2220.1uTP

44、214AGNDEMPHBCKPCMDLRCKXLATDATASYSMXRSTSQCKSQSORFDCRFAC123456M105CON6FCS-FCS+TRK-TRK+C2260.33u/50VD2011N4001L20127uHVCCC230100uF/16VFCS-FCS+TRK-TRK+EMPHBCKPCMDLRCKC2270.1uC2280.1uCN202DEBUGCLKODIG-OUTXRSTD+8VNOTE: 1. RESISTORS, ARE CARBON FILM 5% 1/8W UNLESSOTHERWISE SPECIFIED.2. CERAMIC CAPACITORS,

45、ARE 50V 10%. UNLESSOTHERWISE SPECIFIED.1817MCUP67/AN71P66/AN62P65/AN53P64/AN44P63/AN35P62/AN26P61/AN17P60/AN08P57/ADT9P56/TOUT10P55/CNTR111P54/CNTR012P53/RTP113P52/RTP014P51/INT315P50/INT216P47/SRDDY17P46/SCLK18P45/TXD19P44/RXD20P43/I121P42/INT022P4123P4024/RESET25P71/XCIN26P70/XOUT27XIN28XOUT29VSS3

46、0P2731P2632P2533P2434P2335P2236P2137P2038P17/S3139P16/3040P15/2941P14/S2842P13/S2743P12/S2644P11/S2545P10/S2446P07/S2347P06/S2248P05/S2149P04/S2050P03/S1951P02/S1852P01/S1753P00/S1654P37/S1555P36/S1456P35/S1357P34/S1258S1159S1060S961S862S763S664S565S466S367S268S169S070VCC71VREF72AVSS73COM374COM275CO

47、M176COM077VL378VL279VL180U401M38223ECOM0COM1COM2COM3SEG0SEG1SEG2SEG3SEG4SEG5SEG6SEG7SEG8SEG9SEG10SEG11SEG12SEG13SEG14SEG15SEG16SEG17SEG18SEG19M505ABLCDL30210uHVCCR31422KR31322KR31222KR3111KVCCR3083KR3093KX301A8.00MUNLDLOADXRSTXLATCLOKDATASCORSYSMRW/ROM/LDOFFRW/ROM/LDOFFSCLKSQCK1/2XDISCODI/SWR3274K7R

48、3264K7R3254K7R3234K7R3224K7R3214K7SQSOSENSC30133pC30233pC3030.01u123Q3088050R3294K7R3284K7D303IN4148R33810KR339100KC30810u/6.3VVCCC30747uF/10VVCCDATGND2VCC3M113IRR34010RC30947uF/10VVCC1234KEY302OPEN/CLOSE1234KEY307PREV1234KEY305NEXT1234KEY309F.SCAN1234KEY308REPEAT1234KEY306TIME1234KEY304RANDOM1234KE

49、Y303STOP1234KEY301PLAYR3036K2R302 6K2R305 2KR3042KR307 1KR3061KVCCGFSSYSMSENSSCORDATACLOKXLATGFSXRSTLOADUNLDSCLKSQCK1/2XDISCODI/SWR3361KR3351KR334560RVCC123M301BLED1GREENTrig INTrig SWSTANDBY LEDRelayD+5VR3103K1234KEY310B.SCANR3011KSCLKSQCK1/2XCD/CDR123M301ALED1REDGREENREDGNDR341560RVCCR33010KR3311K

50、123Q3098050STANDBY CNLRL101D306IN4148123Q3078050D4033V3D4091N4148R40310KR4124K7R41347K123Q4022SD1012F123Q4032SA1015123Q4012SA1015R4157K5R40522KR4067K5A+12VR41647KMUTEC4072200u/16VD4111N4148C40822u/16VA+12VD3025393C305220uF/16VC3040.1u4.2VD+5VD+10VC3101000uF/10VNOTE: 1. RESISTORS, ARE CARBON FILM 5%