NAD-C521BEE-cd-sm 维修电路原理图.pdf

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

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

3、NERING FOR 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

4、KAISOSTEESEEN.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 INTERFERE

5、NCE, AND(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

6、may be of 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 1LASE

7、R PRODUCTRadioFans.CN 收音机爱 好者资料库- 3 -SERVICE 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 SE

8、MKO/UDE 5x20MMM505 *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

9、 to determine 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 TE

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

13、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-17IC BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14、. . . . . . . . .18-21TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23-27MECHANISM EXPLODED VIEW . . . . . . .

15、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28MECHANISM EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16、. . . . . . . .30EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31-33PACKING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33- 4 -SPECIFICATIONSDisc Capacity .

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

18、es oversampleAnalog Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 pole activeFrequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+/- 0.5 dB, 5Hz - 20kHzDe-Emphasis Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+/- 0

19、.3 dBTHD (at 0 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 . . . . . . . . . . . . . . . . . . . . . .

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

22、, Scan (), Open, 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)- 5 -1.LINE OUT2.DIGITAL OUT3.AC LINE CORD1. POWER ON / OFF2. DISC DRAWER3. DISPLAY4. OPEN5. PLAY / PAUSE6. TIME7. STOP8. REPEAT9. RANDOM10

23、. SCAN Back () / Forward ()11. SKIP Back () / Forward ()12. STANDBY LEDREAR PANEL / FRONT PANELREAR PANELFRONT PANEL- 6 -DISASSEMBLY 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

24、.12. Pull both sides 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.2.54312766- 7 -BLOCK DIAGRAMU401 M38223E4HP4SYSTEM CONTROL CPU& LCD DISPLAY DRIVERQ401- Q405MUTE CIRCUIT Q301-Q304 MUTEM317RCAJAC

25、K U302PMC1710M318RCA JACKDIGITALOUTPUTM501*LCD DISPLAY87272221351783512161336162635143394046453824129243660LRLRCD AUDIOO/P121528161861U301CXD3017QDIGITALSIGNALPROCESSOR26127212161317U101 CXA2581ANALOG SIGNALPROCESSOR/SERVORFACRFDCFESEQ104Q107MOTOR DRIVERU201 BA6392FOCUS & TRACKINGMOTORDRIVERLOADINGM

26、OTORLOADING MOTORLIMIT SWITCH SPINDLEMOTORSLEDMOTORPU-INLIMIT SWITCHPICKUPDISCM113REMOTESENSORCD MECHANISM UNITPOWERTRANSFORMERAC POWER I / PKEYBOARDM110M109REPEATM105M108M107RANDOMM102M106M104M103TIMEM101Q101DACU306U30511U501,U507DIGITALPOWERU502-3,U506ANALOGUEPOWER+8V+5V+12V5V-12VD514-D517RECTIFIE

27、RDIODESD501-D504RECTIFIERDIODESD506RECTIFIERDIODESU504POWER FOREL LIGHTM502EL LIGHTQ307,Q309Q312,Q313RL101RELAYU40374HC00NAND GATEM303EMC FILTERL301DIGITAL COILM5001- 8 -WIRING DIAGRAM115V:J401,J404230V:J403L401J403J406J407J402J404J4011723-006A-00008V0V0V8V15V0V15VISSUE BM120CM505BM301LIVENEUTRALM50

28、0AM102(16PIN)M105(6PIN)M505ACD MECHANISMTRANSFORMER BOARDDISPLAY BOARDLED BOARDKEY BOARDLIVE BOARDM101(5PIN)TO CHASSISM805BROWNM803BROWN- 9 -RF PATTERN TESTINGNAD - C 521BEE PCB TESTING POINTS DIAGRAMTESTING PROCEDURE(1) Load the test disc (Sony Test CD YEDS-7) and set the unit into PLAY mode.(2) Co

29、nnect the scope to R227 (Pin 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 e

30、ye pattern3T 4T5T 11T- 10 -IMPORTANT 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 provi

31、ded as follows to preventany electrostatic 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 co

32、pper plate with proper grounding 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

33、BEAM EMISSIONThe laser beam of this 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 Functi

34、on.)When the POWER switch is turned 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

35、position after the chucking plate 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 ele

36、ctricity that even if a static discharge does notruin the diode, it can shorten its life or cause it to workimproperly.1.Grounding band1M ohm1M ohm2.Conductive Sheetor Copper Plate- 11 -PRECAUTIONS WHEN CHANGING LASER PICK-UPWhen removing the pick-up assembly, short circuit the PCB tracks on the opt

37、ical block as show in the drawing inorder 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 dama

38、ge from static electricity. Even if a 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

39、BodyGround LineLess than10 ohmConductive Gum MatSolderingIron withGroundwireProtective soldering placefor laser diode- 12 -PCB LAYOUTDISPLAY BOARDKEY BOARDLIVE BOARDLED BOARD- 13 -MAIN BOARD- 14 -SCHEMATIC DIAGRAMDISPLAYSL+1SL-2RCIN13SRDR4SFDR5VREFI6VREFO7GND8FRDR9FFDR10RCIN211FCS+12FCS-13GND114MUTE

40、15TRK+16TRK-17RCIN318TFDR19TRDR20VCC21VCC122VBIN23SPDR24VBIN125SP-26SP+27GND228GND29GND30U201BA6392SQSO1SQCK2XRST3SYSM4DATA5XLAT6CLOK7SENS8SCLK9VDD10ATSK11SPOA12SPOB13XLON14WFCK15XUGF16XPCK17GFS18C2PO19SCOR20COUT21MIRR22DFCT23FOK24LOCK25MDP26SSTP27SFDR28SRDR29TFDR30TRDR31FFDR32FRDR33VSS34TEST35TES13

41、6XTST37VC38FE39SE40TE41CE42RFDC43ADIO44AVSS045IGEN46AVDD047ASYO48ASYI49BIAS50RFAC51AVSS352CLTV53FILO54FILI55PCO56AVDD357VSS58VDD59DOUT60LRCK61PCMID62BCK63EMPH64XVDD65XTAI66XTAO67XVSS68AVDD169AOUT170AIN171LOUT172AVSS173AVSS274LOUT275AIN276AOUT277AVDD278RMUT79LMUT80U301CXD3017QR2014K7R2021KR2031KR2041

42、KR2051KR2061KR2071KR2081KR2091KR2101KR2111KR212 100KR213 10KR214 8K2R2154R7R2160RR2171KR21815KR21915KR220100KR2220RR22333KR22410KR225100KR2261MR227100R2283K3R2293K3R23010KC2070.1uC2080.1uC2091500pC2100.1uC21127pC21227pC214470pC215470pC2130.1uXLATDATASYSMXRSTSQCKSQSO/SQSO/SQCK/XRST/SYSM/DATA/XLAT/CLO

43、K/SENS/SCLK/GFS/SCOR/SQSO/SQCK/XRST/SYSM/DATA/XLAT/CLOK/SENS/SCLK/GFS/SCORV3V6C201220pC202220pC2030.01uC204220pC205220pC206330pCLOKSENSSCLKGFSSCORCLOKSENSSCLKGFSSCORV3V6VCSFDRSFDRSRDRSRDRTFDRTFDRTRDRTRDRFFDRFFDRFRDRFRDRSPDRSPDRVCVCC229470U/16VTESEFEFESETEC2170.1uC2160.01uC2190.47uV3V6C218100pV3V6C22

44、1103KRFDCRFACC2200.47uC2231500pV3V6C2220.1uTP214AGNDEMPHBCKPCMDLRCKXLATDATASYSMXRSTSQCKSQSORFDCRFAC123456M105CON6FCS-FCS+TRK-TRK+C2260.33u/50VD2011N4001L20127uHVCCC230100uF/16VFCS-FCS+TRK-TRK+EMPHBCKPCMDLRCKC2270.1uC2280.1uCN202DEBUGCLKODIG-OUTXRSTD+8VNOTE: 1. RESISTORS, ARE CARBON FILM 5% 1/8W UNLE

45、SSOTHERWISE SPECIFIED.2. CERAMIC CAPACITORS, ARE 50V 10%. UNLESSOTHERWISE SPECIFIED.- 15 -MCUP67/AN71P66/AN62P65/AN53P64/AN44P63/AN35P62/AN26P61/AN17P60/AN08P57/ADT9P56/TOUT10P55/CNTR111P54/CNTR012P53/RTP113P52/RTP014P51/INT315P50/INT216P47/SRDDY17P46/SCLK18P45/TXD19P44/RXD20P43/I121P42/INT022P4123P

46、4024/RESET25P71/XCIN26P70/XOUT27XIN28XOUT29VSS30P2731P2632P2533P2434P2335P2236P2137P2038P17/S3139P16/3040P15/2941P14/S2842P13/S2743P12/S2644P11/S2545P10/S2446P07/S2347P06/S2248P05/S2149P04/S2050P03/S1951P02/S1852P01/S1753P00/S1654P37/S1555P36/S1456P35/S1357P34/S1258S1159S1060S961S862S763S664S565S466

47、S367S268S169S070VCC71VREF72AVSS73COM374COM275COM176COM077VL378VL279VL180U401M38223ECOM0COM1COM2COM3SEG0SEG1SEG2SEG3SEG4SEG5SEG6SEG7SEG8SEG9SEG10SEG11SEG12SEG13SEG14SEG15SEG16SEG17SEG18SEG19M505ABLCDL30210uHVCCR31422KR31322KR31222KR3111KVCCR3083KR3093KX301A8.00MUNLDLOADXRSTXLATCLOKDATASCORSYSMRW/ROM/

48、LDOFFRW/ROM/LDOFFSCLKSQCK1/2XDISCODI/SWR3274K7R3264K7R3254K7R3234K7R3224K7R3214K7SQSOSENSC30133pC30233pC3030.01u123Q3088050R3294K7R3284K7D303IN4148R33810KR339100KC30810u/6.3VVCCC30747uF/10VVCCDATGND2VCC3M113IRR34010RC30947uF/10VVCC1234KEY302OPEN/CLOSE1234KEY307PREV1234KEY305NEXT1234KEY309F.SCAN1234K

49、EY308REPEAT1234KEY306TIME1234KEY304RANDOM1234KEY303STOP1234KEY301PLAYR3036K2R302 6K2R305 2KR3042KR307 1KR3061KVCCGFSSYSMSENSSCORDATACLOKXLATGFSXRSTLOADUNLDSCLKSQCK1/2XDISCODI/SWR3361KR3351KR334560RVCC123M301BLED1GREENTrig INTrig SWSTANDBY LEDRelayD+5VR3103K1234KEY310B.SCANR3011KSCLKSQCK1/2XCD/CDR123

50、M301ALED1REDGREENREDGNDR341560RVCCR33010KR3311K123Q3098050STANDBY CNLRL101D306IN4148123Q3078050D4033V3D4091N4148R40310KR4124K7R41347K123Q4022SD1012F123Q4032SA1015123Q4012SA1015R4157K5R40522KR4067K5A+12VR41647KMUTEC4072200u/16VD4111N4148C40822u/16VA+12VD3025393C305220uF/16VC3040.1u4.2VD+5VD+10VC31010