NAD-C525BEE-cd-sm 维修电路原理图.pdf

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1、NADC 525BEECOMPACTDISC PLAYERC 525BEECOMPACTDISC PLAYERSERVICE MANUALRadioFans.CN 收音机爱 好者资料库- 2 - 3 -SAFETY INFORMATIONCAUTIONTHIS 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(2) THIS DEVIC

2、E MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.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 of sufficient

3、 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.CATUION HGKJDHSGKJHGSJKADVARSEL

4、 HGKJDHSGKJHGSKBVNCLKNBCVLKNLKNVLKNCVNCLVK JKADVARSEL HGKLFH;L;HJMNMDHFKLJHJLDKLJLKDJLKFHJHSGMMKJHGSJKVARING HGKJDHSGKJHGKLGDJHKLHKFG;LKNG;LKJGF;LKJGF;LKJFL;SJKVARO! HGKJDHSGKJHJBJKBKJBJKGSKBVNCLKNBCVLKNLKNVLKNCVNCLVK JKVORSICT! HGKLFH;L;HHBHHJDJHFKLJHJLDKLJLKDJLKFHJHSGKJHGSJKCLASS 1LASER PRODUCTCAU

5、TION - INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.ADVARSEL - USYNLIG LASERSTRLING NR DEKSEL PNES OG SIKKERHEDSLS BRYTES. UNNG EKSPONERING FOR STRLEN.ADVARSEL - USYNLIG LASERSTRLING VED BNING, NR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. UNDG UDSTTELSE FOR STRLI

6、NG.VARING - OSYNLING LASERSTRLNING NR DENNA DEL R PPNAD OCH SPRRAR R URKOPPLADE. STRLEN R FARLIG.VARO! - AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NKTMTNT LASERSTEILYLLE. L KAISO STEESEEN.VORSICT! - UNSICHTBARE LASERSTRAHLUNG TRITT AUS, WENN DECKEL GEFFNET UND WENN SICHERHEITSVERRIEGELUN

7、G BERBRCKT IST. NICHT DEM STRAHL AUSSETZEN. RadioFans.CN 收音机爱 好者资料库- 2 - 3 -SERVICE SAFETY PRECAUTIONS1. Replacing the fusesCAUTION: FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF FUSE.Reference No Part Number DescriptionM502-M504 *CA 5120-0020+0 FU T1A 250V UL/CSA

8、5x20MMM502-M504 *EU 5120-0018+0 FU T1A 250V SEMKO/UDE 5x20MMM505 *CA 5120-0052+0 FUSE T1.6A 250V 5x20MM UL/CSAM505 *EU 5120-0050+0 FUSE T1.6A 250V 5x20MM SEMKO/VDENOTE: : CANADIAN MODEL ONLY. : EUROPEAN MODEL ONLY.2. Safety check out(Only U.S.A. model)Before returning the product to the customer, ma

9、ke leakage current or resistance measurements to determine that exposed 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.CONTENTSDESCRIPTION PAGE

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

11、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8RF PATTERN TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9IMPORTANT NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13、 . . . . . . . .10-11PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-18IC BLOCK DIAGR

14、AM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19-22TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . .

15、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24-33MECHANISM EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34MECHANISM EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16、35EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37-38PACKING DIAGRAM . . . . . . . . . . . .

17、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39- 4 - 5 -SPECIFICATIONSDisc Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . One Disc, 120 or 80 mmDecoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18、 . . . . . . . . . BURR-BROWN Delta Sigma 20bitDigital Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Times oversampleAnalog Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 pole activeFrequency Response . . . . . . . . . .

19、. . . . . . . . . . . . . . . . . . . . . +/- 0.5 dB, 5Hz - 20kHzDe-Emphasis Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +/- 0.3 dBTHD (at 0 dB, 1kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.003%Intermodulation Distortion . . . . . . . . . . . .

20、. . . . . . . . . . . . . . . . 90 dB 10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . 80 dBWow and Flutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unmeasurable (Quartz Crystal Accuracy)Output Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21、 . . . . 200 Output Level at 0 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 V rmsDigital Error Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IRC with double error correction in C1 and C2Digital Code Output . . . . . . . . . . . . . . . . . . . . . .

22、 . . . . . . . . . . . Sony / Philips Serial data formatPower Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12WCONTROLSPlay / Pause, Stop, Random, Skip (), Scan (), Open, Time, Repeat.PHYSICAL SPECIFICATIONSDimensions 435 x 80 x 285 mm(Width x Height x Depth)Net weight

23、4 kg (8.8 lbs)Shipping weight 5.1 kg (11.22 lbs)- 4 - 5 - 2006 NAD C525BEE1. LINE OUT 2. DIGITAL OUT 3. AC LINE CORD1. POWER ON / OFF 2. DISC DRAWER 3. DISPLAY4. OPEN5. PLAY / PAUSE6. TIME7. STOP8. REPEAT9. RANDOM10. SCAN Back () / Forward ()11. SKIP Back () / Forward ()12. STANDBY LED 2006 NAD C525

24、BEEREAR PANEL / FRONT PANELREAR PANELFRONT PANEL- 6 - 7 -76654312DISASSEMBLY 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 sides of the TOP COVER slightly outwar

25、ds 6 and tilt approx. 35 and then remove in the direction as indicated by the arrow 7 . Refer to Figure No.2. Figure No.2.- 6 - 7 -BLOCK DIAGRAMU401 M38223E4HP4SYSTEM CONTROL CPU& LCD DISPLAY DRIVERQ401- Q405MUTE CIRCUIT Q301-Q304 MUTEM317RCAJACK U302PMC1710M318RCA JACKDIGITALOUTPUTM501*LCD DISPLAY8

26、7272221351783512161336162635143394046453824129243660LRLRCD AUDIOO/P121528161861U301CXD3017QDIGITALSIGNALPROCESSOR26127212161317U101 CXA2581ANALOG SIGNALPROCESSOR/SERVORFACRFDCFESEQ104Q107MOTOR DRIVERU201 BA6392FOCUS & TRACKINGMOTORDRIVERLOADINGMOTORLOADING MOTORLIMIT SWITCH SPINDLEMOTORSLEDMOTORPU-I

27、NLIMIT SWITCHPICKUPDISCM113REMOTESENSORCD MECHANISM UNITPOWERTRANSFORMERAC POWER I / PKEYBOARDM110M109REPEATM105M108M107RANDOMM102M106M104M103TIMEM101Q101DACU306U30511U501,U507DIGITALPOWERU502-3,U506ANALOGUEPOWER+8V+5V+12V5V-12VD514-D517RECTIFIERDIODESD501-D504RECTIFIERDIODESD506RECTIFIERDIODESU504P

28、OWER FOREL LIGHTM502EL LIGHTQ307,Q309Q312,Q313RL101RELAYU40374HC00NAND GATEM303EMC FILTERL301DIGITAL COILM5001- 8 - 9 -WIRING DIAGRAM115V:J401,J404230V:J403L401J403J406J407J402J404J4011723-006A+00008V0V0V8V15V0V15VISSUE BM120CM505BM301LIVENEUTRALM500AM102(16PIN)M105(6PIN)M505ACD MECHANISMTRANSFORMER

29、 BOARDDISPLAY BOARDLED BOARDKEY BOARDLIVE BOARDM101(5PIN)TO CHASSISM805BROWNM803BROWN- 8 - 9 -RF PATTERN TESTINGNAD - C 525BEE 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 15 of U101) and DG

30、ND (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 pattern FIG. 1 (C) Good eye pattern3T4T5T 11T- 10 - 11 -IMPORTA

31、NT 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 caused by electrostatic charge accumulated on clothing, human body, etc. A ground must be provided as follows to prevent any ele

32、ctrostatic 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 the body.2. Ground for Work BenchBe sure to place a conductive sheet (1M ohm) or copper plate with proper groundin

33、g 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 not let clothing to get in contact with the pick-up unit. PRECAUTIONS FOR CHECKING BEAM EMISSIONThe laser beam of

34、 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 Function.)When the POWER switch is

35、turned ON after the chucking plate is removed, observe the objective lens and confirm that 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

36、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.INCORRECT CORRECTNOTE: Laser diodes are so susceptible to damage from static electricity that even if a st

37、atic discharge does not ruin the diode, it can shorten its life or cause it to work improperly.1.Grounding band1M ohm1M ohm2.Conductive Sheet or Copper Plate- 10 - 11 -PRECAUTIONS WHEN CHANGING LASER PICK-UPWhen removing the pick-up assembly, short circuit the PCB tracks on the optical block as show

38、 in the drawing in order 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 el

39、ectricity. Even if a static discharge does not ruin the diode, it can shorten its life or cause it to work improperly. When replacing the pick-up, use a conductive mat, a grounded soldering iron, and so on, to protect the laser diode from static damage.Ground Conductive Wrist Band for BodyGround Lin

40、e Less than 10 ohmConductive Gum MatSoldering Iron with Ground wireProtective soldering place for laser diode- 12 -PCB LAYOUTDISPLAY BOARDKEY BOARDLIVE BOARDLED BOARD- 13 -MAIN BOARD- 14 - 15 -SCHEMATIC DIAGRAMDISPLAYSL+1SL-2RCIN13SRDR4SFDR5VREFI6VREFO7GND8FRDR9FFDR10RCIN211FCS+12FCS-13GND114MUTE15T

41、RK+16TRK-17RCIN318TFDR19TRDR20VCC21VCC122VBIN23SPDR24VBIN125SP-26SP+27GND228GND29GND30U201BA6392SQSO1SQCK2XRST3SYSM4DATA5XLAT6CLOK7SENS8SCLK9VDD10ATSK11SPOA12SPOB13XLON14WFCK15XUGF16XPCK17GFS18C2PO19SCOR20COUT21MIRR22DFCT23FOK24LOCK25MDP26SSTP27SFDR28SRDR29TFDR30TRDR31FFDR32FRDR33VSS34TEST35TES136XT

42、ST37VC38FE39SE40TE41CE42RFDC43ADIO44AVSS045IGEN46AVDD047ASYO48ASYI49BIAS50RFAC51AVSS352CLTV53FILO54FILI55PCO56AVDD357VSS58VDD59DOUT60LRCK61PCMID62BCK63EMPH64XVDD65XTAI66XTAO67XVSS68AVDD169AOUT170AIN171LOUT172AVSS173AVSS274LOUT275AIN276AOUT277AVDD278RMUT79LMUT80U301CXD3017QR2014K7R2021KR2031KR2041KR2

43、051KR2061KR2071KR2081KR2091KR2101KR2111KR212 100KR213 10KR214 8K2R2154R7R2160RR2171KR21847KR21915KR220100KR2220RR22333KR22410KR225100KR2261MR2270RR2283K3R2293K3R23010KC2070.1uC2080.1uC2091500pC2100.1uC21127pC21227pC214470pC215470pC2130.1uXLATDATASYSMXRSTSQCKSQSO/SQSO/SQCK/XRST/SYSM/DATA/XLAT/CLOK/SE

44、NS/SCLK/GFS/SCOR/SQSO/SQCK/XRST/SYSM/DATA/XLAT/CLOK/SENS/SCLK/GFS/SCORV3V6C201220pC202220pC2030.01uC204220pC205220pC206330pCLOKSENSSCLKGFSSCORCLOKSENSSCLKGFSSCORV3V6VCSFDRSFDRSRDRSRDRTFDRTFDRTRDRTRDRFFDRFFDRFRDRFRDRSPDRSPDRVCVCC229470U/16VTESEFEFESETEC2170.1uC2160.01uC2190.47uV3V6C218100pV3V6C221390

45、0PRFDCRFACC2200.47uC2231500pV3V6C2220.1uTP214AGNDEMPHBCKPCMDLRCKXLATDATASYSMXRSTSQCKSQSORFDCRFAC123456M105CON6FCS-FCS+TRK-TRK+C2260.33u/50VD2011N4001L20127uHVCCC230100uF/16VFCS-FCS+TRK-TRK+EMPHBCKPCMDLRCKC2270.1uC2280.1uCN202DEBUGCLKODIG-OUTXRSTD+8VNOTE: 1. RESISTORS, ARE CARBON FILM 5% 1/8W UNLESS

46、OTHERWISE SPECIFIED. 2. CERAMIC CAPACITORS, ARE 50V 10%. UNLESS OTHERWISE SPECIFIED.- 14 - 15 -MCUP67/AN71P66/AN62P65/AN53P64/AN44P63/AN35P62/AN26P61/AN17P60/AN08P57/ADT9P56/TOUT10P55/CNTR111P54/CNTR012P53/RTP113P52/RTP014P51/INT315P50/INT216P47/SRDDY17P46/SCLK18P45/TXD19P44/RXD20P43/I121P42/INT022P

47、4123P4024/RESET25P71/XCIN26P70/XOUT27XIN28XOUT29VSS30P2731P2632P2533P2434P2335P2236P2137P2038P17/S3139P16/3040P15/2941P14/S2842P13/S2743P12/S2644P11/S2545P10/S2446P07/S2347P06/S2248P05/S2149P04/S2050P03/S1951P02/S1852P01/S1753P00/S1654P37/S1555P36/S1456P35/S1357P34/S1258S1159S1060S961S862S763S664S56

48、5S466S367S268S169S070VCC71VREF72AVSS73COM374COM275COM176COM077VL378VL279VL180U401M38223ECOM0COM1COM2COM3SEG0SEG1SEG2SEG3SEG4SEG5SEG6SEG7SEG8SEG9SEG10SEG11SEG12SEG13SEG14SEG15SEG16SEG17SEG18SEG19M505ABLCDL30210uHVCCR31422KR31322KR31222KR3111KVCCR3083KR3093KX301A8.00MUNLDLOADXRSTXLATCLOKDATASCORSYSMRW

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

50、1234KEY308REPEAT1234KEY306TIME1234KEY304RANDOM1234KEY303STOP1234KEY301PLAYR3036K2R302 6K2R305 2KR3042KR307 1KR3061KVCCGFSSYSMSENSSCORDATACLOKXLATGFSXRSTLOADUNLDSCLKSQCK1/2XDISCODI/SWR3361KR3351KR334560RVCC123M301BLED1GREENTrig INTrig SWSTANDBY LEDRelayD+5VR3103K1234KEY310B.SCANR3011KSCLKSQCK1/2XCD/C