NAD-C165BEE-pre-sm 维修电路原理图.pdf

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1、NADSERVICE MANUALC 165BEESTEREOPREAMPLIFIERC 165BEE STEREOPREAMPLIFIERRadioFans.CN 收音机爱 好者资料库TABLE OF CONTENTS DESCRIPTION P A G E SERVICE CAUTION.3-4REAR PANEL/FRONT PANEL VIEW.5 SPECIFICATIONS 6 WIRING DIAGRAM7 BLOCK DIAGRAM. .8-12 ALIGNMENT PROCEDURE.13 SCHEMATICS.14-16 PCB LAYOUT.17-20TROUBLE SH

2、OOTING GUIDE.21 ELECTRICAL PARTS LIST.22-34 EXPLODED VIEW.35 EXPLODED VIEW PARTS LIST.36 C725BEE PACKING ACCESSORY AND PARTS LIST.37 ?RadioFans.CN 收音机爱 好者资料库PRODUCT SAFETY SERVICING GUIDELINES CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT INANY WAY. NEVER PERFORM CUSTOMIZED INSTALLATIONSWITHOUT MA

3、NUFACTURERS APPROVAL. UNAUTHORIZEDMODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUTMAY LEAD TO YOUR BEING LIABLE FOR ANY RESULTINGPROPERTY DAMAGE OR USER INJURY.SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOUARE THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWINGSAFETY CHECKS AND SERVICING GUIDELINES. TO

4、 DOOTHERWISE, INCREASES THE RISK OF POTENTIAL HAZARDSAND INJURY TO THE USER. WHILE SERVICING, USE AN ISOLATION TRANSFORMER FORPROTECTION FROM AC LINE SHOCK.SAFETY CHECKSAFTER THE ORIGINAL SERVICE PROBLEM HAS BEENCORRECTED. A CHECK SHOULD BE MADE OF THEFOLLOWING.SUBJECT : FIRE & SHOCK HAZARD1. BE SUR

5、E THAT ALL COMPONENTS ARE POSITIONED INSUCH A WAY AS TO AVOID POSSIBILITY OF ADJACENTCOMPONENT SHORTS. THIS IS ESPECIALLY IMPORTANTON THOSE MODULES WHICH ARE TRANSPORTED TO ANDFROM THE REPAIR SHOP. 2. NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVEDEVICES SUCH AS INSULATORS, BARRIERS, COVERS,SHIELDS, S

6、TRAIN RELIEFS, POWER SUPPLY CORDS, ANDOTHER HARDWARE HAVE BEEN REINSTALLED PERORIGINAL DESIGN. BE SURE THAT THE SAFETY PURPOSEOF THE POLARIZED LINE PLUG HAS NOT BEEN DEFEATED.3. SOLDERING MUST BE INSPECTED TO DISCOVER POSSIBLECOLD SOLDER JOINTS, SOLDER SPLASHES OR SHARPSOLDER POINTS. BE CERTAIN TO R

7、EMOVE ALL LOOSEFOREIGN PARTICLES.4. CHECK FOR PHYSICAL EVIDENCE OF DAMAGE ORDETERIORATION TO PARTS AND COMPONENTS. FORFRAYED LEADS, DAMAGED INSULATION (INCLUDING ACCORD). AND REPLACE IF NECESSARY FOLLOW ORIGINALLAYOUT, LEAD LENGTH AND DRESS.5. NO LEAD OR COMPONENT SHOULD TOUCH A RECEIVINGTUBE OR A R

8、ESISTOR RATED AT 1 WATT OR MORE. LEADTENSION AROUND PROTRUDING METAL SURFACES MUSTBE AVOIDED.6. ALL CRITICAL COMPONENTS SUCH AS FUSES,FLAMEPROOF RESISTORS, CAPACITORS, ETC. MUST BEREPLACED WITH EXACT FACTORY TYPES, DO NOT USEREPLACEMENT COMPONENTS OTHER THAN THOSESPECIFIED OR MAKE UNRECOMMENDED CIRC

9、UITMODIFICATIONS.7. AFTER RE-ASSEMBLY OF THE SET ALWAYS PERFORM ANAC LEAKAGE TEST ON ALL EXPOSED METALLIC PARTS OFTHE CABINET, (THE CHANNEL SELECTOR KNOB, ANTENNATERMINALS. HANDLE AND SCREWS) TO BE SURE THE SETIS SAFET TO OPERATE WITHOUT DANGER OF ELECTRICALSHOCK. DO NOT USE A LINE ISOLATION TRANSFO

10、RMERDURING THIS TEST USE AN AC VOLTMETER, HAVING 5000OHMS PER VOLT OR MORE SENSITIVITY, IN THEFOLLOWING MANNER; CONNECT A 1500 OHM 10 WATTRESISTOR, PARALLELED BY A .15 MFD, 150V AC TYPECAPACITOR BETWEEN A KNOWN GOOD EARTH GROUND(WATER PIPE, CONDUIT, ETC.) AND THE EXPOSEDMETALLIC PARTS, ONE AT A TIME

11、. MEASURE THE AC VOLTAGE ACROSS THE COMBINATIONOF 1500 OHM RESISTOR AND .15 MFD CAPACITOR. REVERSE THE AC PLUG AND REPEAT AC VOLTAGEMEASUREMENTS FOR EACH EXPOSED METALLIC PART. VOLTAGE MEASURE MUST NOT EXCEED 75 VOLTS R.M.S.THIS CORRESPONDS TO 0.5 MILLIAMP AC ANY VALUEEXCEEDING THIS LIMIT CONSTITUTE

12、S A POTENTIALSHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY.SUBJECT : GRAPHIC SYMBOLSSUBJECT : TIPS ON PROPER INSTALLATION1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS,CUBBYHOLE OR CLOSELY FITTING SHELF SPACE. OVEROR CLOSE TO HEAT DUCT, OR IN THE PATH OF HEATEDAIR FLOW.2. AVOID CONDITIONS OF HI

13、GH HUMIDITY SUCH AS:OUTDOOR PATIO INSTALLATIONS WHERE DEW IS AFACTOR, NEAR STEAM RADIATORS WHERE STEAMLEAKAGE IS A FACTOR, ETC.3. AVOID PLACEMENT WHERE DRAPERIES MAY OBSTRUCTREAR VENTING. THE CUSTOMER SHOULD ALSO AVOID THEUSE OF DECORATIVE SCARVES OR OTHER COVERINGSWHICH MIGHT OBSTRUCT VENTILATION.4

14、. WALL AND SHELF MOUNTED INSTALLATIONS USING ACOMMERCAL MOUNTING KIT MUST FOLLOW THE FACTORYAPPROVED MOUNTING INSTRUCTIONS A PRODUCTMOUNTED TO A SHELF OR PLATFORM MUST RETAIN ITSORIGINAL FEET (OR THE EQUIVALENT THICKNESS INSPACERS) TO PROVIDE ADEQUATE AIR FLOW ACROSSTHE BOTTOM, BOLTS OR SCREWS USED

15、FOR FASTENERSMUST NOT TOUCH ANY PARTS OR WIRING. PERFORMLEAKAGE TEST ON CUSTOMIZED INSTALLATIONS.5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF APRODUCT ON SLOPING SHELF OR A TILTED POSITION,UNLESS THE PRODUCT IS PROPERLY SECURED.6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLEON ITS MOUNTING TO THE

16、 CART. CAUTION THECUSTOMER ON THE HAZARDS OF TRYING TO ROLL A CARTWITH SMALL CASTERS ACROSS THRESHOLDS OR DEEPPILE CARPETS.7. CAUTION CUSTOMERS AGAINST THE USE OF A CART ORSTAND WHICH HAS NOT BEEN LISTED BY UNDERWRITERSLABORATORIES, INC. FOR USE WITH THEIR SPECIFICMODEL OF TELEVISION RECEIVER OR GEN

17、ERICALLYAPPROVED FOR USE WITH T.V.S OF THE SAME ORLARGER SCREEN SIZE.8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSIONCORDS, EXPLAIN THAT A FOREST OF EXTENSIONSSPROUTING FROM A SINGLE OUTLET CAN LEAD TODISASTROUS CONSEQUENCES TO HOME AND FAMILY.THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL, WITHIN ANEQU

18、ILATERAL TRIANGLE, IS INTENDED TO ALERT THE USER TO THEPRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” WITHIN THEPRODUCTS ENCLOSURE THAT MAY BE OF SUFFICIENT MAGNITUDE TOCONSTITUTE A RISK OF ELECTRIC SHOCK.THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE ISINTENDED TO ALERT THE USER TO THE PRESENCE

19、OF IMPORTANTOPERATING AND MAINTENANCE (SERVICING) INSTRUCTIONS IN THELITERATURE ACCOMPANYING THE APPLIANCE.?SERVICING PRECAUTIONSCAUTION : Before servicing the A/V Receiver covered by thisservice data and its supplements and addends, read and follow theSAFETY PRECAUTIONS. NOTE : if unforeseen circum

20、stancescreate conflict between the following servicing precautions and anyof the safety precautions in this publication, always follow the safetyprecautions.Remember Safety First:General Servicing Precautions1. Always unplug the A/V Receiver AC power cord from the ACpower source before:(1) Removing

21、or reinstalling any component, circuit board,module, or any other assembly.(2) Disconnecting or reconnecting any internal electrical plug orother electrical connection.(3) Connecting a test substitute in parallel with an electrolyticcapacitor.Caution : A wrong part substitution or incorrect polarity

22、 installationof electrolytic capacitors may result in an explosion hazard.2. Do not spray chemicals on or near this A/V Receiver or any of itsassemblies.3. Unless specified otherwise in this service data, clean electricalcontacts by applying an appropriate contact cleaning solution tothe contacts wi

23、th a pipe cleaner, cottontipped swab, orcomparable soft applicator.Unless specified otherwise in this service data, lubrication ofcontacts is not required.4. Do not defeat any plug/socket B+ voltage interlocks with whichinstruments covered by this service manual might be equipped.5. Do not apply AC

24、power to this A/V Receiver and/or any of itselectrical assemblies unless all solid-state device heat sinks arecorrectly installed.6. Always connect test instrument ground lead to the appropriateground before connecting the test instrument positive lead. Alwaysremove the test instrument ground lead l

25、ast.Insulation Checking ProcedureDisconnect the attachment plug from the AC outlet and turn thepower on. Connect an insulation resistance meter(500V) to theblades of the attachment plug. The insulation resistance betweeneach blade of the attachment plug and accessible conductive parts(Note 1) should

26、 be more than 1M-ohm.Note 1 : Accessible Conductive Parts including Metal panels, Inputterminals, Earphone jacks, etc.Electrostatically Sensitive (ES) DevicesSome semiconductor (solid state) devices can be damaged easily bystatic electricity. Such components commonly are calledElectrostatically Sens

27、itive (ES) Devices. Examples of typical Esdevices are integrated circuits and some field effect transistors andsemiconductor chip components.The following techniques should be used to help reduce theincidence of component damage caused by static electricity.1. Immediately before handling any semicon

28、ductor component orsemiconductor-equipped assembly, drain off any electrostaticcharge on your body by touching a known earth ground.Alternatively, obtain and wear a commercially availabledischarging wrist strap device, which should be removed forpotential shock reasons prior to applying power to the

29、 unit undertest.2. After removing an electrical assembly equipped with ES devices,place the assembly on a conductive surface such as aluminumfoil, to prevent electrostatic charge buildup or exposure of theassembly.3. Use only a grounded-tip soldering iron to solder or unsolder ESdevices.4. Use only

30、an antistatic solder removal device. Some solderremoval devices not classified a “anti-static” can generateelectrical charges sufficient to damage ES devices.5. Do not use freonpropelled chemicals. These can generateelectrical charge sufficient to damage ES devices.6. Do not remove a replacement ES

31、device from its protectivepackage until immediately before you are ready to install it. (Mostreplacement ES devices are packaged with leads electricallyshorted together by conductive foam, aluminum foil, orcomparable conductive material).7. lmmediately before removing the protective material from th

32、eleads of a replacement ES device, touch the protective material tothe chassis or circuit assembly into which the device will beinstalled.Caution : Be sure no power is applied to the chassis or circuit, andobserve all other safety precautions.8. Minimize bodily motions when handing unpackaged replac

33、ementES devices. (Normally harmless motion such as the brushingtogether of your clothes fabric or the lifting of your foot from acarpeted floor can generate static electricity sufficient to damagean ES device.)? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?OVERALL SPECIFICATIONS LINE LEVEL INPUT Input

34、 impedance (R and C) 100 k+ 320 pF Input sensitivity 158 mV (ref. 500 mV out) Maximum input signal 9 V Signal/Noise ratio, A-weighted 108 dB (ref. 500 mV in 500 mV out, volume set to unity gain) 106 dB (ref. 2V out, Volume maximum) Channel Separation 80 dB (ref. 1 kHz/10 kHz) Frequency response 0.1

35、dB (ref. 20 Hz - 20 kHz, Tone defeat ON) 0.5 dB (ref. 20 Hz - 20 kHz, Tone defeat OFF) Frequency response (subwoofer out) 100 Hz (ref. -3 dB)OUTPUT Output impedance - Pre out 75 Tape out Source Z + 440 Sub out 100 Headphones 10 Maximum output level - Pre out 10 V into 600 Tape out 10 V into 10 k loa

36、d Sub out 7 V into 1 k load Headphones 5 V into 600 2 V into 32 THD (CCIF IMD, DIM 100) 0.001 % dB (ref. 20 Hz 20 kHz, 2 Vout)TONE CONTROLS Treble 5 dB at 10 kHz (ref. 2V in 500 mV out) Bass 5 dB at 100 Hz (ref. 2V in 500 mV out)POWER CONSUMPTION Normal operation 21 W Standby mode 0.8 W PHONO INPUT

37、Input impedance - MC 40,100,600 (R) 1 nF (C) MM 47 k (R) 220,300,400 pF (C) Input sensitivity - MC 0.15 mV (ref. 1 kHz 500 mV out) MM 2.63 mV (ref. 1 kHz 500 mV out) Input overload - MC 1 mV/10 mV/100 mV (20 Hz/1 kHz/20 kHz) MM 16 mV/147 mV/1.4 (20 Hz/1 kHz/20 kHz) Gain - MC in - Tape out 59.8 dB1 (

38、ref. 1 kHz, 10 k load) MM in - Tape out 36.5 dB (ref. 1 kHz, 10 k load) THD (CCIF IMD, DIM 100) 78 dB2 (ref. 0.5 mV) MM 86 dB3 (ref. 0.5 mV) RIAA response accuracy 0.5 dB (ref. 20 Hz 50 Hz) 0.3 dB (ref. 50 Hz 20 kHz) Infrasonic filter 10 Hz (at -3 dB) 5 Hz (at -14 dB) Channel Separation - MC 60 dB (

39、ref. 1 kHz/10 kHz) MM 60 dB (ref. 1 kHz/10 kHz)DIMENSION AND WEIGHT Dimensions (W x H x D) 435 x 80 x 286 mm (Net) 435 x 99 x 315 mm (Gross Net weight 6 kg Shipping weight 7.8 kg ?PHONO SWITCHNAD C165 KEY BOARD Vm1.0COPYRIGHT C 2008 NAD ELECTRONICSHEADPHONE Vm1.0C165BEE PHONE AMP Vm1.0UL1672#18AWGUL

40、1672 AWG#22CZ58HEADPHONE Vm1.0CZ102NAD C165 TRANSFORMERTO SWITCHED AC OUTLETUL3266 AWG#22CB52CB57UL3266 AWG#18CB102CB103UL2468#26AWGTO AC INLETCB53UL2468#26AWGCB104CB55CB56UL1672#18AWGUL1672#18AWGUL1672#18AWGCB54120V VERSION ONLYWIRING DIAGRAMNAD C165BEE TONE BOARD Vm1.0COPYRIGHT C 2008 NAD ELECTRON

41、ICSINSERTINSERTCZ106INSERTUL2468#26AWGFPC2.5-19 S=1.25mmCZ701CB101MM MODULECZ118M401LINE MODULECZ116M402LINE MODULECZ114M403UL1015#16AWG UL2468#26AWGCZ105P100NAD C165BEE POT BOARD Vm1.0COPYRIGHT C 2008 NAD ELECTRONICSCB105P101CB106INSERTINSERTMC INPUT RVm1.0CZ111MC INPUT LVm1.0CZ110MM INPUT Vm1.0CZ1

42、09INSERTCB109CB107CB111CB110UL2468#26AWGC165 BEE MAINBOARDLINE MODULECZ113INSERTM303CB108INSERTCZ117INSERTMM MODULEM301CZ115INSERTLINE MODULEM302CZ108CZ107?2SK363Q109LINEARPOWERBOARD SECTIONMAINBOARD SECTIONKEYBOARD SECTIONSWITCHING POWER+5.5VTRANSFORMERMODULEM403PHONE AMPHP OUTPREOUTRELAYRELAYRL110

43、RL109+5.5VBLOCK DIAGRAMSUBOUTPHONO INMMMCINPUTSW1INPUTSELECTORINPUT RESS101RIAACIRCUITM302MODULEM402LINEBALANCEMPREC OUTAUXTAPEDISCOUTPUTRELAYCDTUNERINPUT RELAYSELECTORMMINPUT CAPRV13VOLUMECONTROLCIRCUITMC AMPMODULEM401M301S102MODULELINEM403M303RV14RL111DEFEATCONTROLRV11&RV12TONETONEIC73MCUTONE DEFE

44、ATSTANDBYKEYLED?+5.5VNC1NC2NC3Vss4SDA5SCL6NC7Vcc8IC7124C01Y7111.0592MHz19181716151413121110987654321CZ701CON19PHOCAUMTUTP2TP1TONE DPHONE MUTEVSGIC703IS1U60LHEADPHONE DET11334422D7073LEDAMBERBLUE+5.5VREDP1.5(MOSI)1P1.6(MISO)2P1.7(SCK)3RST4P3.0(RXD)5P3.1(TXD)7NC6P3.2(INT0)8P3.3(INT1)9P3.4(T0)10P3.5(T1

45、)11P3.6(WR)12P3.7(RD)13XTAL214XTAL115GND16GND17P2.0(A8)18P2.1(A9)19P2.2(A10)20P2.3(A11)21P2.4(A12)22P2.5(A13)23P2.6(A14)24P2.7(A15)25PSEN26ALE/PROG27NC28EA/VPP29P0.7(AD7)30P0.6(AD6)31P0.5(AD5)32P0.4(AD4)33P0.3(AD3)34P0.2(AD2)35P0.1(AD1)36P0.0(AD0)37VCC38NC39P1.0(T2)40P1.1(T2 EX)41P1.242P1.343P1.444I

46、C73AT89S52-TQFP+5.5V12345678910J202ISPMCU CONNECTION DIAGRAMTO LEDAND CONTROL SIGNAL TO MAINBOARDKEY?AT89S52KEY BOARD IC73PORT 2 DRIVERSPORT 2LATCHP2.0 - P2.7FLASHPORT 0LATCHRAMPROGRAMADDRESSREGISTERBUFFERPCINCREMENTERPROGRAMCOUNTERDUAL DPTRINSTRUCTIONREGISTERBREGISTERINTERRUPT, SERIAL PORT,AND TIME

47、R BLOCKSSTACKPOINTERACCTMP2TMP1ALUPSWTIMINGANDCONTROLPORT 1 DRIVERSP1.0 - P1.7PORT 3LATCHPORT 3 DRIVERSP3.0 - P3.7OSCGNDVCCPSENALE/PROGEA / VPPRSTRAM ADDR.REGISTERPORT 0 DRIVERSP0.0 - P0.7PORT 1LATCHWATCHDOGISPPORTPROGRAMLOGIC?24C01KEY BOARDIC71PIN CONFIGURATIONCONTROLLOGICXREDOCEDSLAVE ADDRESSREGIS

48、TER &COMPARATORWORD ADDRESSCOUNTERHIGH VOLTAGEGENERATOR,TIMING & CONTROLEEPROMARRAYYDECODERDATAREGISTERClockDI/OACK85674GNDWPSCLSDAVccnMOSFUNCTIONAL BLOCK DIAGRAM12345678NCNCNCVSSVCCNCSCLSDA?TNY274 POWERBOARD:IC51 PIN CONNECTION : BLOCK DIAGRAM: ?!AC POWER CORD(120V Version)SW52POWER SWITCHWH(120V V

49、ersion)1122AC OUTLET?UNSWITCHED?BL123CZ55BK!BK123CZ56!RD!RD!123CZ571122AC OUTLET 2?SWITCHED?OR123CZ54!ORC165 TransformerBlueBlue12345CZ51CON512CZ52CON212345CB58CON5123CB53CON3DGNDACS1V+ACS2V-D52DB105PGNDC5310uF/400VUV1BP2D4S5S6S7S8IC51TNY274C5510nF/1KVR572100K/1WD58FR107/UF4006T51EE16D59SR540C580.1u

50、FC54330uF/10VIC53PC817PGNDC520.1uF/16VR570100R571510DGNDRL51Relay-SPSTD5331N4148C5104N7/400VR5741KQ522C1815R5751KDGND+5.5VDGNDC51110nF+5.6VR5760.33,1/4W FSC562.2nF/250V,Y1D574V3C574n7/400V123CB55123CB56123CB57C510.22uFL51FILTER INDUCTOR,48mH123CB54F51T1.6AL/250V For 230VACT2AL/250V For 120VACStandby