NAD-C542-cd-sm 维修电路原理图.pdf

NADC 542COMPACTDISC PLAYERC 542COMPACTDISC 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! HGKJDHSGKJHJBJKBKJBJKGSKBVNCLKNBCVLKNLKNVLKNCVNCLVK 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 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 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 INTERFERENCE, 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 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 1LASER 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 NumberDescriptionM507 *AH 5120-0052-0FUSE T1.6A 250V 5x20MMM507 *C 5120-0050-0FUSE T1.6A 250V 5x20MMM512, M513 *AH 5120-0020-0FU T1A 250V UL/CSA 5x20MMM512, M513 *C 5120-0018-0FU T1A 250V SEMKO/VDEM514 *AH 5120-0026-0FU T315MA L 250V UL/CSAM514 *C 5120-0027-0FU T315MA L 250VNOTE: : 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 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4REAR PANEL / FRONT PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8RF PATTERN TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9IMPORTANT NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-11PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-18IC BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19-22TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24-29MECHANISM EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30MECHANISM EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33-34PACKING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35- 4 -SPECIFICATIONSDisc Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .One Disc, 120 or 80 mmDecoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BURR-BROWN Delta Sigma 24bitDigital Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Times oversampleAnalog Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 pole activeFrequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+/- 0.5 dB, 5Hz - 20kHzDe-Emphasis Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+/- 0.3 dBTHD (at 0 dB, 1kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.002%Intermodulation Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . .90 dB10 kHz . . . . . . . . . . . . . . . . . . . . . . . .80 dBWow and Flutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Unmeasurable (Quartz Crystal Accuracy)Output Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200 Output Level at 0 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.2 V rmsDigital Error Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IRC with double error correction in C1 and C2Digital Code Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sony / Philips Serial data formatPower Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12WCONTROLSPlay / Pause, Stop, Random, Skip (), 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 -DIGITALOPTICAL OUTDIGITALOPTICAL OUTDIGITALOUTDIGITALOUTTRIGGER SWITCHTRIGGER SWITCHIR INIR INININOFFOFFAUTOAUTONAD LINKOUTINNAD LINKOUTIN 2003 NAD C 54245671.LINE OUT2.DIGITAL OPTICAL & COAXIAL OUTPUT3NAD LINK IN / OUT4.IR INPUT5.TRIGGER IN6.TRIGGER SWITCH7.AC LINE CORD1. POWER ON / OFF2. DISC DRAWER3. DISPLAY4. OPEN5. PLAY / PAUSE6. TIME7. STOP8. REPEAT9. RANDOM10. SCAN Back () / Forward ()11. SKIP Back () / Forward ()12. STANDBY LED 2003 NAD C 542NADC 542Compact Disc PlayerSEC6 7 8910MIN468115127910123OPENPLAY PAUSESTOPTIMERANDOMSCANSKIPREPEATREAR 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.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 DIAGRAMU301 M38B59EFSYSTEM CONTROL CPU& VFL DISPLAY DRIVERQ401- Q403MUTE CIRCUIT Q301-Q304 MUTEM313RCAJACKQ307M313IR_INM318RCA JACKDIGITALOUTPUTU402NAD LINKMICRO-CONTROLLERU40374HC00 NAND GATENAD LINKINM501VFL DISPLAYM314TRIGGERSWITCHM315TRIGGER INNAD LINKOUTM319RCA JACK18 6719 6959 7060 8062223268722511231591312109811201 79 80244156354027131613464636166515940 414365665867636419243660LRLRCD AUDIOO/P251215161828U201LXD3017QDSP1276211U101CX2581RF AMPRFACFESETERFDCSRDRSFDRFRDRFFDRTRDRTFDRSPDRLOADINGMOTORDISCODISWLOADING MOTORLIMIT SWITCH SPINDLEMOTORSLEDMOTORPU-INLIMIT SWITCHPICKUPDISCM113REMOTESENSORCD MECHANISM UNITPOWERTRANSFORMERAC POWER I / PQ101 U302PCM1732DACU306U305U501,U507DIGITALPOWERU502-3,U506ANALOGUEPOWER+8V+5V+12V5V-12VD514-D517RECTIFIERDIODESD501-D504RECTIFIERDIODESD510-D511ZENER DIODES-22VF1F2D506-D508RECTIFIERDIODESU40374HC00NAND GATEM303EMC FILTERL301DIGITAL COILM316OPT JACKDIGITALOUTPUTM500Q310K501RELAYK502RELAYQ3128Q103426 271212 1316 175910201924152928333231302627U202BA6392KEYBOARDM110M109REPEATM105M108M107RANDOMM102M106M104M103TIMEM101- 8 -WIRING DIAGRAMM102(16PIN)M301AM505AM506AM120AM105A(6PIN)CD MECHANISMLIVE BOARDDISPLAY BOARDKEY BOARDMAIN BOARDLED BOARDM101(5PIN)BROWNBLACKNEUTRALLIVEREDM502TRANSFORMER- 9 -RF PATTERN TESTINGNAD - C 542 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 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 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 provided 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 copper 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 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 Function.)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 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 electricity 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 optical 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 damage 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 BodyGround LineLess than10 ohmConductive Gum MatSolderingIron withGroundwireProtective soldering placefor laser diode- 12 -PCB LAYOUTDISPLAY BOARDKEY BOARDLIVE BOARDLED BOARD- 13 -MAIN BOARD- 14 -L30210uHVCCR3083KR3093KX3014.00MUNLDLOADXRSTXLATCLOKDATASCORSYSMRW/ROM/LDOFFRW/ROM/LDOFFSCLKSQCK1/2XCD/CDRDISCODI/SWR3314K7R3321KR333 4K7R328 4K7R327 4K7R334 4K7SQSOSENSC30133pC30233pC3030.01u123Q3118050D303IN4148R31210KR311 100KC30810u/16VVCCC3040.1uC305220uF/16VC30747uF/10VD+5VVCCDAT1GND2VCC3M113REMOTE +D5VR31310C42010uF/16VTP301M101B.SCANM106OPEN/CLOSEM102F.SCANM107PREVM103REPEATM105RANDOMM104TIMEM109STOPM108NEXTM110PLAYR3036K2R3026K2R3052KR3042KR3071KR3061KR3103KR3011KVCCTP303SYSMSQSOSENSSCORDATACLOKXLATXRSTLOADUNLDSCLKSQCK1/2XCD/CDRDISCODI/SWMUTER3171KR314OPENR3151KM314TRIG SWAUTOOFFR318470R33610KD304STANDBYREDGREENR319560123Q3098050123Q3108050R13164K7D307IN4148K501CRELAY SW+10VTP30275/51P74/AN42P73/AN33P72/AN24P71/AN15P70/AN06P61/CT027P60/CT18P47/1NT29/RESET10P91/XOUT11P90/XIN12VSS13XIN14XOUT15VCC16P46/T3OUT17P45/T1OUT18P44/PWM119P43/BUZ0120P42/INT321P41/INT122P40/INT023P87PWM0/FLD3924P8625P8526P8427VEE28P8329P8230STANDBY31POWER32P37/FLD3133P3634P3535P3436P3337P3238P3139P3040P17/FLD2341P1642P1543P1444P1345P1246P1147P1048P07FLD1549P0650P0551P0452P0353P0254P0155P0056P27/FLD757P2658P2559P2460P2361P2262P21/FLD163P2064P5765P5666P5567P5468P5369P5270P5171P5072AVSS73VREF74P6575P6476P6377P6278P77/AN77976/680U301MCU-VPVCCF1/011F1/022NP36G/0345G/0454G/0563G/067NC82G/0791G/0810NC11P1/0912P2/1013P3/1114P4/1215NC16NC17P5/1318P6/1419P7/1520P8/1621NC22NC23P9/1724P10/1825P11/1926P12/2027NC28P13/2129P14/2230P15/2331P16/2432NC33F2/2534F2/2635TP318VFDVFD3VFD4VFD5VFD6VFD7VFD8VFD9VFD10VFD11VFD12VFD13VFD14VFD15VFD16VFD17VFD18VFD19VFD20VFD21VFD22VFD23VFD24F1F2VFD3VFD4VFD5VFD6VFD7VFD8VFD9VFD10VFD11VFD12VFD13VFD14VFD15VFD16VFD17VFD18VFD19VFD20VFD21VFD22VFD23VFD24VCCR3294K7R330OPENR32110KNADLINKREM_IN123Q3128050K502CRELAY SWD308IN4148C419103C310100uF/6V3D409U301-P50IN4148123Q4022SD1012F123Q4032SA1015R4124K7R41347KR4067K5R4157K5123Q4012SA1015R41647KR405 22KC40822u/16VD411IN4148C4072200u16VD4033V3MUTEA+12VR403 10KR33510KVCC123Q3078050R33810KC403OPENR32215KD305IN5393C3060.1uVCCSENSOR132M315TRIGGER_INM38B59EFMCUSCHEMATIC DIAGRAMSL+1SL-2RCIN13SRDR4SFDR5VREFI6VREFO7GND8FRDR9FFDR10RCIN211FCS+12FCS-13GND114MUTE15TRK+16TRK-17RCIN318TFDR19TRDR20VCC21VCC122VBIN23SPDR24VBIN125SP-26SP+27GND228GND29GND30U202BA6392SQSO1SQCK2XRST3SYSM4DATA5XLAT6CLOK7SENS8SCLK9VDD10ATSK11SPOA12SPOB13XLON14WFCK15XUGF16XPCK17GFS18C2PO19SCOR20COUT21MIRR22DFCT23FOK24LOCK25MDP26SSTP27SFDR28SRDR29TFDR30TRDR31FFDR32FRDR33VSS34TEST35TES136XTST37VC38FE39SE40TE41CE42RFDC43ADIO44AVSS045IGEN46AVDD047ASYO48ASYI49BIAS50RFAC51AVSS352CLTV53FILO54FILI55PCO56AVDD357VSS58VDD59DOUT60LRCK61PCMID62BCK63EMPH64XVDD65XTAI66XTAO67XVSS68AVDD169AOUT170AIN171LOUT172AVSS173AVSS274LOUT275AIN276AOUT277AVDD278RMUT79LMUT80U201CXD3017QR2014K7R2021KR2031KR2041KR2051KR2061KR2071KR2091KR2101KR2111KR212100KR21310KR2148K2R2154R7R2171KR21815KR21915KR220100KR221OPENR2220R22333KR22410KR225100KR2261MR227100R2283K3R2293K3R23010KC2070.1uC2080.1uC2091500pC210