NAD-D1050-dac-sm 电路图 维修手册.pdf

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1、NAD SERVICE MANUAL D1050 USB DAC D1050 USB DAC RadioFans.CN 收音机爱 好者资料库 TABLE OF CONTENTS DESCRIPTION P A G E SERVICE CAUTION.3-4 SPECIFICATIONS.5 WIRING DIAGRAM.7-10 PCB LAYOUT.22-29 EXPLODED VIEW PARTS LIST CIRCUIT DIAGRAMS. TROUBLE SHOOTING GUIDE A.11 EXPLODED VIEW .15-21 ELECTRICAL VIEW PARTS LIS

2、T.30-39 BLOCK DIAGRAM.6 TROUBLE SHOOTING GUIDE B.12 .13-14 .13-14 RadioFans.CN 收音机爱 好者资料库 PRODUCT SAFETY SERVICING GUIDELINES CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY. NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFACTURERS APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VO

3、ID THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANY RESULTING PROPERTY DAMAGE OR USER INJURY. SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS AND SERVICING GUIDELINES. TO DO OTHERWISE, INCREASES THE RISK OF POTENTIAL HAZARDS AND

4、INJURY TO THE USER. WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTECTION FROM AC LINE SHOCK. SAFETY CHECKS AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRECTED. A CHECK SHOULD BE MADE OF THE FOLLOWING. SUBJECT : FIRE CONNECT A 1500 OHM 10 WATT RESISTOR, PARALLELED BY A .15 MFD, 150V AC TYPE

5、 CAPACITOR BETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE, CONDUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME. MEASURE THE AC VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND .15 MFD CAPACITOR. REVERSE THE AC PLUG AND REPEAT AC VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC PART. VOL

6、TAGE MEASURE MUST NOT EXCEED 75 VOLTS R.M.S. THIS CORRESPONDS TO 0.5 MILLIAMP AC ANY VALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY. SUBJECT : GRAPHIC SYMBOLS SUBJECT : TIPS ON PROPER INSTALLATION 1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS,

7、CUBBYHOLE OR CLOSELY FITTING SHELF SPACE. OVER OR CLOSE TO HEAT DUCT, OR IN THE PATH OF HEATED AIR FLOW. 2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIO INSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIATORS WHERE STEAM LEAKAGE IS A FACTOR, ETC. 3. AVOID PLACEMENT WHERE DRAPERIES MAY

8、OBSTRUCT REAR VENTING. THE CUSTOMER SHOULD ALSO AVOID THE USE OF DECORATIVE SCARVES OR OTHER COVERINGS WHICH MIGHT OBSTRUCT VENTILATION. 4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMERCAL MOUNTING KIT MUST FOLLOW THE FACTORY APPROVED MOUNTING INSTRUCTIONS A PRODUCT MOUNTED TO A SHELF OR PLATF

9、ORM MUST RETAIN ITS ORIGINAL FEET (OR THE EQUIVALENT THICKNESS IN SPACERS) TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM, BOLTS OR SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR WIRING. PERFORM LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS. 5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT O

10、N SLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT IS PROPERLY SECURED. 6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS MOUNTING TO THE CART. CAUTION THE CUSTOMER ON THE HAZARDS OF TRYING TO ROLL A CART WITH SMALL CASTERS ACROSS THRESHOLDS OR DEEP PILE CARPETS. 7. CAUTION CUSTOMERS A

11、GAINST THE USE OF A CART OR STAND WHICH HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES, INC. FOR USE WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR GENERICALLY APPROVED FOR USE WITH T.V.S OF THE SAME OR LARGER SCREEN SIZE. 8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS, EXPLAIN THAT

12、A FOREST OF EXTENSIONS SPROUTING FROM A SINGLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO HOME AND FAMILY. THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL, WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE USER TO THE PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” WITHIN THE PRODUCTS ENCLOSURE THAT

13、 MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK. THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE USER TO THE PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE (SERVICING) INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE APPLIANCE. 3 RadioFans.CN 收音机爱

14、 好者资料库 SERVICING PRECAUTIONS CAUTION : Before servicing the A/V Receiver covered by this service data and its supplements and addends, read and follow the SAFETY PRECAUTIONS. NOTE : if unforeseen circumstances create conflict between the following servicing precautions and any of the safety precauti

15、ons in this publication, always follow the safety precautions. Remember Safety First: General Servicing Precautions 1. Always unplug the A/V Receiver AC power cord from the AC power source before: (1) Removing or reinstalling any component, circuit board, module, or any other assembly. (2) Disconnec

16、ting or reconnecting any internal electrical plug or other electrical connection. (3) Connecting a test substitute in parallel with an electrolytic capacitor. Caution : A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard. 2. Do no

17、t spray chemicals on or near this A/V Receiver or any of its assemblies. 3. Unless specified otherwise in this service data, clean electrical contacts by applying an appropriate contact cleaning solution to the contacts with a pipe cleaner, cottontipped swab, or comparable soft applicator. Unless sp

18、ecified otherwise in this service data, lubrication of contacts is not required. 4. Do not defeat any plug/socket B+ voltage interlocks with which instruments covered by this service manual might be equipped. 5. Do not apply AC power to this A/V Receiver and/or any of its electrical assemblies unles

19、s all solid-state device heat sinks are correctly installed. 6. Always connect test instrument ground lead to the appropriate ground before connecting the test instrument positive lead. Always remove the test instrument ground lead last. Insulation Checking Procedure Disconnect the attachment plug f

20、rom the AC outlet and turn the power on. Connect an insulation resistance meter(500V) to the blades of the attachment plug. The insulation resistance between each blade of the attachment plug and accessible conductive parts (Note 1) should be more than 1M-ohm. Note 1 : Accessible Conductive Parts in

21、cluding Metal panels, Input terminals, Earphone jacks, etc. Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical Es devices are

22、integrated circuits and some field effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembl

23、y, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electr

24、ical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an antistatic solder removal device.

25、Some solder removal devices not classified a “anti-static” can generate electrical charges sufficient to damage ES devices. 5. Do not use freonpropelled chemicals. These can generate electrical charge sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protective packa

26、ge until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil, or comparable conductive material). 7. lmmediately before removing the protective material from the leads of a replacement ES

27、 device, touch the protective material to the chassis or circuit assembly into which the device will be installed. Caution : Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handing unpackaged replacement ES devices. (No

28、rmally harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device.) 4 Specifi cations D 1050SOURCE AUDIO SPECIFICATIONSUSBCOAXIALOPTICAL Maximum Output Level 2.0V 2.0V2.0V Si

29、gnal/Noise Ratio (A-weighted)115dB115dB115dB Crosstalk (1kHz)110dB120dB120dB Crosstalk (10kHz)105dB105dB130dB Frequency Response (20Hz - 20kHz)0.5dB0dB to -0.3dB0dB to -0.3dB Total Harmonic Distortion0.001%0.0006%0.0006% IMD (SMPTE)0.005%0.005%0.005% IMD (CCIF)0.003%0.003%0.003% GENERAL Standby Powe

30、r0.5W Supports bit rate/sample rateup to 24/192 Unit Dimension (WxHxD) - Gross*58 x 186 x 208mm 2 5/16 x 7 3/8 x 8 1/4” * Net Weight1kg (2.2lb) Shipping Weight2.1kg (4.6lb) * Gross dimensions include extended buttons and rear panel terminals. * Non-metric measurements are approximate. NAD Electronic

31、s will not assume any liability for errors being made by retailers, custom installers, cabinet makers, or other end users based on information contained in this document. Note: Installers should allow a minimum clearance of 55mm for wire/cable management. 5 USB switch XMOS USB2.0 AUDIO Asynchronous

32、Micro controller Usb upgrade DAC Local Clock generator Ultra low jitter Headphone AMP HP OUT 3.5mm CS4398 Discrete IIS Audio Analog audio 16-300ohm headphone out Line outIIC/SPI/GPIO SPI SPI GPIO Protect circuitPSU DC/DC + LDO 5V 2A DC INPUT Analog supply Digital Supply Type B VOLUME IR LED STBY FPP

33、 BOARD SPI GPIO 3V3D SOURCE VOLUME PIC24FJ128GB106 COAX 1 COAX 2 OPTO1 OPTO2 SPDIF IN SPDIF RX AK4118A IIS switch Volume Control LM1972 SPI BAL OUT SE OUT MUTE BLOCK DIAGRAM 6 WIRING DIAGRAM 7 PCU_WAKE PCU_GATE PCU_CLK PCU_VDD PCU_VDDIO TRST_N TDI TCK TMS PLL_AGND DEBUG_N PLL_AVDD CLK MODE4:0 RST_N

34、PCU PLL Thread 4 Thread 0 Thread 1 Thread 2 Thread 5 Thread 6 Thread 7 Thread 3 32 Channel Ends Boot ROM JTAG Switch Switch 7 Synchronizers 6 Clock Blocks 10 Timers 4 Locks 1H 1G 1I 1J 1L 1N 1M 1O 1P 1D 1C 1E 1A 1K X0D14 X0D15 X0D20 X0D16 X0D17 X0D18 X0D19 X0D01 X0D02 X0D03 X0D08 X0D09 X0D04 X0D05 X

35、0D06 X0D07 X0D10 X0D11 X0D12 X0D13 X0D22 X0D23 X0D00 1F 1B X0D21 X0D51 X0D52 X0D53 X0D54 X0D55 X0D57 X0D58 X0D61 X0D62 X0D63 X0D64 X0D65 X0D66 X0D69 X0D70 X0D49 X0D50 X0D68 X0D67 X0D26 X0D27 X0D32 X0D33 X0D28 X0D29 X0D30 X0D31 X0D34 X0D35 X0D36 X0D37 X0D38 X0D39 X0D42 X0D43 X0D24 X0D25 X0D41 X0D40 X

36、0D56 64KB SRAM 8KB OTP Security Register GND OTP_VCC VDD VDDIO XLDXLCALXBLX A8t roPB8t roPPort 8DPort 8C Port 4FPort 4EPort 4DPort 4CPort 4APort 4B Port 16A Port 32A Port 16B XS1-L01A-TQ128 MAIN BOARD 8 Input Selector Clock Recovery Clock Generator DAIF Decoder AC-3/MPEG Detect DEM P I/F Audio I/F X

37、tal Oscillator PDN ”L”=S/P0TNI LRCK BICK SDTO DAUX MCKO2 XTOXTIRAVDD AVSS CDTI CDTO CCLK CSN DVDD DVSS TVDD MCKO1 IIC RX0 RX1 RX2 RX3 RX4 RX5 RX6 RX7 DIT TX0 Error Output:5V 4A, USSAABSGS PLASTIC PARTS 76-351001-0Bfront pannlePC B567SBArevo c pot1-100153-77 77-351002-1bottom coverABS765B 75-351002-0

38、round coverABS765B 79-351003-0Feet mm0906gaby l oP0-200040-09 79-351005-0Black rubber suport25*10*4.5 78-325008-0insulpad FGK-17,3050.4mm 78-359004-0insulpad DGK-17,45550.4mm METAL PARTS mm6.0=T,5N-CCESeta l p r aerC0-200153-76 mm6.0=T,5N-CCESeta l p r aer0-200153-08 mm6.0=T , 5N-CCESeta l p r aer0-

39、200153-56 66-351002-0vent plateSUS 304 mm7171,LAegdaB1-300153-07 J71-325002-0knob_sec assy 38 FASTENERS 61-022206-6Self Tapping ScrewBTB2.66 61-062506-5Machine ScrewMF2.5X6mm 61-063208-0Self Tapping ScrewBTF38 61-023208-0Self Tapping ScrewBTB38 PACKING 88-351001-0Bgift box 88-351002-1Ashipping box44

40、5278357mm 88-351003-2egg_A 0620631-300153-09 88-351005-0Asleeve box 88-351006-0Aaccesory box 88-351007-0clap board A296250mm 88-351008-1clap board B442276mm mm004005,TEPml i f kn i hs1-400153-09 30-44050-01Quick start Gudie157g, 420X297mm 90-325002-0Non-woven Cloth:40mm20mm 94-351001-0S/N Label47x9mm 86-004709-0Copperplate Label47x9mm 94-351002-0S/N Label5310mm 86-000053-0Copperplate Label5310mm 94-351003-0shipping box version Label11585mm,R=1mm 30-51500-01Guarantee Card(2013) 94-000006-0Sealed LabelPC, 65mm 39 SERVICE MANUAL NAD 2014 D1050 USB DAC NAD ELECTRONICS LTD TORONTO