NAD-C546BEE-cd-sm 维修电路原理图.pdf

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1、NADC 546BEECOMPACTDISC PLAYERC 546BEECOMPACTDISC PLAYERSERVICE MANUALRadioFans.CN 收音机爱 好者资料库- 2 -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 DEVICE MU

2、ST 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 mag

3、nitude 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

4、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 TYPE OF FUSE.Reference NoPart NumberDescriptionFC201 5120-0050+0FUSE T1.6A/250V 5X20FC202, FC204, FC205 5120-0018+0FUSE T1A 250V 5X20FC203 5120-0035+0FU T100

5、MA 250VF101 5120-1169+0-CFUSE 0.8A 250V 8.35X4.32. Safety check out(Only U.S.A. model)Before returning the product to the customer, make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit.Parts marked with the symbol are critic

6、al with regard to the risk of fire and electric shock.Replace only with parts recommended by the manufacturer.CONTENTSDESCRIPTION PAGESPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4REAR PANEL / FRONT PANEL. .

7、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8RF PATTERN TESTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9、. . . . . . . . . . . . . . 9IMPORTANT NOTES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-12MCU UPGRADE PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-19SERVO UPGRADE PROCED

10、URE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20PCB LAYOUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21-24SCHEMATIC DIAGRAM. . . . . . . . . . . . . . . . . . . . . . .

11、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25-30IC BLOCK DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31-37TROUBLESHOOTING GUIDE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12、. . . . . . . . . . . 38ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39-53TRAVERSE EXPLODED VIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54TRAVERSE EXPLODED VIEW P

13、ARTS LIST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . .

14、. . . . . . . . . . . . . . . . . . . . . .57-58PACKING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59HISTORY CHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15、. . . . . . . 60- 4 -SPECIFICATIONSGENERAL PARAMETERSOutput levelAnalog: 2.2 0.1 VOptical: -22.5 3.5 dBmCoaxial: 950 100 mVFrequency response0.3 dB (ref. 0 dB 20 Hz-1 kHz)0.5 dB (ref. 0 dB 5 kHz-20 kHz)Total harmonic distortion90 dBDe-emphasis-3.73 to -5.33 dB (ref. 0dB 1 kHz, 5 kHz)-8.04 to -10.04

16、dB (ref. 0dB 1 kHz, 16 kHz)Linearity0.01 dB (ref. 0dB 1 kHz at -3 dB)0.02 dB (ref. 0dB 1 kHz at -6 dB)0.02 dB (ref. 0dB 1 kHz at -10 dB)0.05 dB (ref. 0dB 1 kHz at -20 dB)0.15 dB (ref. 0dB 1 kHz at -60 dB)Standby power0.5WUSBOutput level2.2 0.2 VFrequency response1 dB (ref. 0 dB 20 Hz - 16 kHz)Total

17、harmonic distortion0.03% (ref. 0 dB 1 kHz, Audio LPF)Signal/Noise ratio118 dB(ref. 0 dB 1 kHz, A-weighted Pause)DIMENSION AND WEIGHTUnit Dimensions (W x H x D)435 x 306 x 89 mm (Gross)*17 1/8 x 12 /16 x 3 9/16 inchesNet weight4.9 kg10.8 lbsShipping weight6.3 kg13.9 lbs* - Gross dimensions include fe

18、et, extended buttons and rear panel terminals.Specifications are subject to change without notice. For updated documentation and features, please log onto www.NAD for the latest information about C 546BEE.- 5 -1. LINE OUT 2. DIGITAL OUT (COAXIAL, OPTICAL) 3. +12V TRIGGER IN4. IR IN5. AC MAINS INPUT1

19、. STANDBY BUTTON 2. STANDBY LED 3. DISC TRAY4. STOP/OPEN5. SOURCE6. RANDOM7. DISPLAY8. SCAN9. USB INPUT10. PLAY/PAUSE/SKIP11. VFD12. REMOTE SENSORREAR PANEL / FRONT PANELREAR PANELFRONT PANEL12345123456789101112- 6 -76654312DISASSEMBLY INSTRUCTIONS1. Remove machine screws M 4.0 x 6.0 ( 1 to 4 ) from

20、 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 remove in the direction as indicated by the arrow 7 . Refer to Figure No.2. Figure No.2.- 7 -BLOCK DIAGRAMV

21、FDKeyKeyboardMCUIC206TMP86FS49VFD, Key, DACU202Electromotor driveAnd loader controlU209DAC WM8740TA7291IR inTrigger inCoaxial outOptical outRCA R/L outU20174HCU04SPDIFIRU374HC86TransformerAC inEMI inductor+12V -12V-28VD+5V +5V+8V7805/7809/7812/7912LoaderMM1669Motor driveIC3IC703T5CJ3-7D13IC701TC94A9

22、3SERVOMainboardServoboard- 8 -WIRING DIAGRAM123ResetRXDTXDGNDCPU_5VLR120V230VCD8VGND1.5VCL_SWJGNDOP_SWLM_CLLM_OPSPDIFDATABCLKLRCLKMCLKGNDUSB_DETUSB_UPDATEACKAM1DETECTUSB_RSTMCU_RSTAC1AC2-28VD+5VKGNDKEY1KEY0V_R2V_R1VFD_CLKVFD_DATAVFD_CEVFD_INHCPU_5VDGNDLEDREMOTE217181.2.3.4.5.6.7.8.9.10.11.12.13.14.1

23、5.16.17.18.DGND1PCB-C54626+MAIN1726-072A+000BIssue BRESETDETT1.6AL250VT1AL250VT1AL250V100mAL250VT1AL250VP217P218P219JGNDJGNDJGNDJGNDJGNDJ222Remote to MCURemote from KeyboardDGNDDETECTCPU_5VTXDRXDDGNDCPU_5VUSB_TXUSB_RXT800mAL 250VRCA_CHX201C216C219Q216C220C223C203C312C314C316C310C264C265C266C267C268Q

24、205Q202C269C270C271Q203C273L201Q204C226C230C233C237C238C240Q210Q211Q212Q213C245C247C249C251C253D210C254Q206C255Q207C257D213 D214C258C259C208C214Q201D202L202D204D205D208C235C272H207H202H203H204H206H201C277C285D218C323C324P202P203R289R241R335R334R243R302R306Q208Q209J219P204P205L2C15R290D209CN103R24C11

25、5D6C113D7D11Q10D8D13D14D15R264Q9C16D12X202L203J220D203U203D206J217J218D211R262RL202RL201J209J210FC201FC202FC203FC204FC205U210U211AC201U202IC202IC203U205U206U207J214C210C211CON201J201J202J203J204J207RCA201U204R243D201D1C243RCA202J215C201C10L1C11U2C12C13C14J205JMP120JMP46JMP121JMP83JMP88JMP92JMP82JMP4

26、7JMP84JMP90JMP40JMP22JMP24JMP43JMP76JMP72JMP51JMP2JMP13JMP26JMP27JMP30JMP25JMP28JMP32D239R140JMP38JMP33JMP48JMP49JMP54JMP52JMP50JMP57JMP59JMP56JMP55JMP62JMP99JMP78JMP29JMP60JMP71JMP100JMP73D238JMP18JMP94JMP63JMP61JMP19JMP91JMP53JMP58JMP69JMP77J216JMP11JMP10JMP131JMP133JMP139JMP75JMP132JMP21JMP45JMP1

27、24JMP115JMP86JMP80JMP6JMP14JMP15JMP16JMP17JMP7JMP68JMP67JMP119JMP41JMP42JMP1JMP5JMP3JMP128JMP122JMP98JMP125JMP102JMP126JMP113JMP36JMP34JMP31JMP123JMP127JMP135JMP136JMP85JMP81JMP70JMP37JMP66JMP74JMP12JMP137JMP138JMP35SW201D21D23D22D24L102C114D107R21D105R22C17U116R23D108C18C110C109R117R27L103C116C112C

28、111U101JMP64JMP20CN1AJMP9JMP4JMP93JMP8JMP106JMP129JMP130JMP141JMP142JMP143JMP114JMP87JMP144JMP145JMP146JMP147JMP148JMP151JMP152JMP140JMP79JMP153JMP44JMP134JMP158D16JMP155D17R33D2JMP150F101JMP156JMP157JMP159JMP163JMP164D5T100AC1AC2-28V+5VGNDKEY1KEY0V_R2VR_1VFE_CLKVFD_DATAVFD_CEVFD_INHVFD_5VGNDLEDREMO

29、TEGNDSTOP/OPENSOURCERANDOMDISPLAYSCAN LEFTSCAN RIGHTGND1726-072A+000BPCB-C54626+KEYIssue BCN102BR105R104R115C104REMO101C102Z101JMP39JMP117JMP105JMP108JMP111JMP110JMP109JMP97JMP107JMP112JMP104JMP95JMP101JMP89JMP23S105S103S104S107S108S109S1S2JP110CON101JMP154JMP65JMP160JMP116JMP96JMP161JMP162JMP118JMP

30、103JMP149GNDPOWER1726-072A+000BPCB-C54626+SKIPIssue BJP109T1PCB-C54626+SW11726-072A+000BIssue B3-BLUE1-AMBERCN102AD4S31726-072A+000BPCB-C54626+USBIssue BCN2JP108GN_CH1346SLT-SLT+FM-FM+DM-DM+FE-TE-TE+FE+PDVRLDGNDFCBADESVCCVREFT5CJ3-7D13TC94A93FGCL-SWOP/CL-COMOP-SWLM-CLLLM-OPGNDUSB-USB-USB-DETUPDATEPO

31、WERAM1MCU-TESTUSB-RSTMCU-RSTUSB-RXUSB-TXVCCD-D+DGNDPCB-C54626+SERVO1725-970B+000BQ701Q71Q2C707C708C712C715C717C734C735C743C744C745C746C27C28C29C52C56C6C7C701C702C705C706C710C713C714C716C719C721C723C724C728C731C733C737C738C740C742C756C760C761C765C768C770C771C772C774C775C777C781C783C757C791C711C718C72

32、6C727C763C764C703C704C720C722C725C730C732C741C766C767C769C773C776C778C779C780C782C25C51C76C60C75C739C785C26C8C758C759C762C53C54C59C74C77C78D5D6L703L705L706L707L708L709CN701L10L11U11IC3CN08JR0JR701R1R10R11R16R19R2R23R3R4R46R50R52R53R55R56R57R63R64R65R66R67R7R701R702R703R704R705R706R707R708R709R710R71

33、1R712R713R714R715R716R717R718R719R720R721R722R723R724R725R727R728R729R730R731R732R733R734R735 R736R737R738R739R740R741R742R743R744R745R746R747R748R749R750 R751R752R753R756R757R758R759R760R761R762R763R764R765R766R767R768R769R770R771R772R773R774R775R776R777R778R779R780R781R782R783R8R823R824R825R826R82

34、7R828R829R51R54R20R21R22R48R49R13R14CN4IC707IC4IC6IC701IC703X702R15R30C729C736X701R31R32R33R34R35R36C784C2C5C1J215IC1Q220C3C4R17R18R25R27R5R6R9CN1BQ1R12R24R26R830R28R29R37JP1081V58VBCLKDATAGNDLRCLKMCLKSPDIFJ220J1CD MECHANISMSWITCH BoardKEY BoardSERVO BoardSKIP BoardUSB BoardMAIN BoardTRANSFORMERAC I

35、N- 9 -RF PATTERN TESTINGNAD - C 546BEE 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 C3 (Pin 4 of IC701) and DGND (J215). Scope setting: Coupling : AC. Vertical sensitivity : 0.2 V/ div. Horizontal tim

36、e base : 0.5 S/div.(3) Observe the waveform is 1.5V 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 pattern3T 4T5T 11T1346SLT-SLT+FM-FM+DM-DM+FE-TE-TE+FE+PDVRLDGNDFCBADESVCCVREFT5CJ3-7D13TC94A93FGCL-SWOP/CL-COMOP-SWLM-CLLLM-O

37、PGNDUSB-USB-USB-DETUPDATEPOWERAM1MCU-TESTUSB-RSTMCU-RSTUSB-RXUSB-TXVCCD-D+DGNDPCB-C54626+SERVO1725-970B+000BQ701Q71Q2C707C708C712C715C717C734C735C743C744C745C746C27C28C29C52C56C6C7C701C702C705C706C710C713C714C716C719C721C723C724C728C731C733C737C738C740C742C756C760C761C765C768C770C771C772C774C775C777

38、C781C783C757C791C711C718C726C727C763C764C703C704C720C722C725C730C732C741C766C767C769C773C776C778C779C780C782C25C51C76C60C75C739C785C26C8C758C759C762C53C54C59C74C77C78D5D6L703L705L706L707L708L709CN701L10L11U11IC3CN08JR0JR701R1R10R11R16R19R2R23R3R4R46R50R52R53R55R56R57R63R64R65R66R67R7R701R702R703R704

39、R705R706R707R708R709R710R711R712R713R714R715R716R717R718R719R720R721R722R723R724R725R727R728R729R730R731R732R733R734R735 R736R737R738R739R740R741R742R743R744R745R746R747R748R749R750 R751R752R753R756R757R758R759R760R761R762R763R764R765R766R767R768R769R770R771R772R773R774R775R776R777R778R779R780R781R7

40、82R783R8R823R824R825R826R827R828R829R51R54R20R21R22R48R49R13R14CN4IC707IC4IC6IC701IC703X702R15R30C729C736X701R31R32R33R34R35R36C784C2C5C1J215IC1Q220C3C4R17R18R25R27R5R6R9CN1BQ1R12R24R26R830R28R29R37JP1081V58VBCLKDATAGNDLRCLKMCLKSPDIFJ220J1Test Point- 10 -IMPORTANT NOTESINSTRUCTION FOR HANDLING OPTIC

41、AL 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 electrostatic charge during unpacking or

42、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 grounding on the work bench or other sur-face

43、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 this unit is focused on the reflectin

44、g 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

45、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 plate is removed.(2) The diffused ligh

46、t 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 static discharge does not ruin the diode

47、, it can shorten its life or cause it to work improperly.1.Grounding band1M ohm1M ohm2.Conductive Sheet or Copper Plate- 11 -PRECAUTIONS WHEN CHANGING LASER PICK-UP When removing the pick-up assembly, short circuit the PCB tracks on the optical block as show in the drawing in order to protect the pi

48、ck-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

49、 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 Line Less than 10 ohmConductive Gum MatSolder

50、ing Iron with Ground wireProtective soldering place for laser diode- 12 -MULTI-KEY TABLE FOR C546BEEItemContentMulti-key1MCU VerDisplay + 3Factory TestDisplay + K_PANEL_PLAY4TRAY COUNT RANDOM + 6AUTOSTANDBY ENABLE/DISABLERANDOM + K_PANEL_PLAY7CLEAR ALLSource + . Then input password “546546”- 13 -MCU