NAD-CI980-pwr-sm 维修电路原理图.pdf

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1、NADSERVICE MANUAL CI 980MULTI-CHANNELAMPLIFIERCI 980 MULTI-CHANNELAMPLIFIERRadioFans.CN 收音机爱 好者资料库TABLE OF CONTENTS DESCRIPTION P A G E SERVICE CAUTION.3-4SPECIFICATIONS.5WIRING DIAGRAM.6 PCB LAYOUT.20-24EXPLODED VIEW PARTS LIST.36 CIRCUIT DIAGRAMS.TROUBLE SHOOTING GUIDE.10EXPLODED VIEW .35.11-19ELE

2、CTRICAL VIEW PARTS LIST.25-34BLOCK DIAGRAM.7-9 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 MANUFACTURERS APPROVAL. UNAUTHORIZEDMODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUTMAY

3、 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 DOOTHERWISE, INCREASES THE RISK OF POTENTIAL HAZARDSAND INJURY TO THE USER. WHILE SERV

4、ICING, 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 SURE THAT ALL COMPONENTS ARE POSITIONED INSUCH A WAY AS TO AVOID POSSIBILITY OF ADJACENTCO

5、MPONENT 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, STRAIN RELIEFS, POWER SUPPLY CORDS, ANDOTHER HARDWARE HAVE BEEN REINSTALLED PERORIGINAL

6、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 REMOVE ALL LOOSEFOREIGN PARTICLES.4. CHECK FOR PHYSICAL EVIDENCE OF DAMAGE ORDETERIORATI

7、ON 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 RESISTOR RATED AT 1 WATT OR MORE. LEADTENSION AROUND PROTRUDING METAL SURFACES MUSTBE AV

8、OIDED.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 CIRCUITMODIFICATIONS.7. AFTER RE-ASSEMBLY OF THE SET ALWAYS PERFORM ANAC LEAKAGE TEST ON AL

9、L 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 TRANSFORMERDURING THIS TEST USE AN AC VOLTMETER, HAVING 5000OHMS PER VOLT OR MORE SENSITIVITY,

10、 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. MEASURE THE AC VOLTAGE ACROSS THE COMBINATIONOF 1500 OHM RESISTOR AND .15 MFD CAPACIT

11、OR. 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 CONSTITUTES A POTENTIALSHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY.SUBJECT : GRAPHIC SYMBOLSSU

12、BJECT : 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 HIGH HUMIDITY SUCH AS:OUTDOOR PATIO INSTALLATIONS WHERE DEW IS AFACTOR, NEAR STEAM RADIAT

13、ORS 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. WALL AND SHELF MOUNTED INSTALLATIONS USING ACOMMERCAL MOUNTING KIT MUST FOLLOW THE FA

14、CTORYAPPROVED 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 FOR FASTENERSMUST NOT TOUCH ANY PARTS OR WIRING. PERFORMLEAKAGE TEST ON CUSTOMIZED INST

15、ALLATIONS.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 CART. CAUTION THECUSTOMER ON THE HAZARDS OF TRYING TO ROLL A CARTWITH SMALL CASTERS AC

16、ROSS 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 GENERICALLYAPPROVED FOR USE WITH T.V.S OF THE SAME ORLARGER SCREEN SIZE.8. CAUTION CUSTOME

17、RS 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 ANEQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE USER TO THEPRESENCE OF UNINSULATED “DANGERO

18、US 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 OF IMPORTANTOPERATING AND MAINTENANCE (SERVICING) INSTRUCTIONS IN THELITERATURE ACCOMPA

19、NYING THE APPLIANCE.3SERVICING PRECAUTIONSCAUTION : Before servicing the poweramplifier covered by thisservice data and its supplements and addends, read and follow theSAFETY PRECAUTIONS. NOTE : if unforeseen circumstancescreate conflict between the following servicing precautions and anyof the safe

20、ty precautions in this publication, always follow the safetyprecautions.Remember Safety First:General Servicing Precautions1. Always unplug the poweramplifier AC power cord from the ACpower source before:(1) Removing or reinstalling any component, circuit board,module, or any other assembly.(2) Disc

21、onnecting 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 installationof electrolytic capacitors may result in an explosion hazard.2. Do not

22、 spray chemicals on or near this poweramplifier or any of itsassemblies.3. Unless specified otherwise in this service data, clean electricalcontacts by applying an appropriate contact cleaning solution tothe contacts with a pipe cleaner, cottontipped swab, orcomparable soft applicator.Unless specifi

23、ed 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 power to this poweramplifier and/or any of itselectrical assemblies unless all so

24、lid-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 last.Insulation Checking ProcedureDisconnect the attachment plug from the AC out

25、let 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 be more than 1M-ohm.Note 1 : Accessible Conductive Parts including Metal panel

26、s, Inputterminals, Earphone jacks, etc.Electrostatically Sensitive (ES) DevicesSome semiconductor (solid state) devices can be damaged easily bystatic electricity. Such components commonly are calledElectrostatically Sensitive (ES) Devices. Examples of typical Esdevices are integrated circuits and s

27、ome 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 semiconductor component orsemiconductor-equipped assembly, drain off any electrostatic

28、charge 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 unit undertest.2. After removing an electrical assembly equipped with ES devic

29、es,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 an antistatic solder removal device. Some solderremoval devices not classified

30、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 device from its protectivepackage until immediately before you are ready to ins

31、tall 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 theleads of a replacement ES device, touch the protective material tothe chassis

32、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 replacementES devices. (Normally harmless motion such as the brushingtogether of your

33、 clothes fabric or the lifting of your foot from acarpeted floor can generate static electricity sufficient to damagean ES device.)4SPECIFICATIONS ENGLISHDEUTSCHNEDERLANDSSVENSKA5CI 980Continuous Output Power 8 Ohms4 Ohms8 Ohms in Bridge Mode8 x 50W (ref. rated THD, 20Hz-20kHz, all channels driven)8

34、 x 60W 120WRated THD (250mW to rated power, CCIF IMD, DIM 100)0.03% (ref. 20Hz-20kHz)Clipping Power155W (ref. 1kHz, 8 ohms, 0.1% THD)Damping Factor150 (ref. 8 ohms, 50Hz and 1kHz)Input Sensitivity 1.1V (ref. rated power)Voltage Gain33dBFrequency Response20Hz-20kHz 1dBSignal/Noise Ratio, A-Weighted 8

35、0dB (ref. 1W/8 ohms)100dB (ref. 50W)Trigger5-30V In (AC/DC)-52dBV, 12V OutTime to Automatic Standby (without signal)30 minutesGENERALRated Power600W (120V 60Hz, 230V 50Hz)Idle Power26WStandby power1, VM2.1,FR-4,1.6mm 2Layers,2Oz,TG130,109146mm DIODESD902, D903, D904, D905, D906, D907,D91933-44148-17

36、Switch Diode1N4148W-FDICTD915, D916, D917, D91833-20120-01DIODE SMDMURS120T3GTRANSISTORS32-TOS ,G1TL1045TBMMrot s i snarT10-10450-13409Q,209Q32-TOS ,G1TL1555TBMMrot s i snarT10-15550-13309Q,109QICFBPRTM2034RIPMA l at i g iD10-20340-30109CIRESISTOR026rot s i seR p i hC00-00269-70609R ,509R, 1/10W, 1%

37、K1rot s i seR p i hC00-10019-70639R,0603,1/10W,1%,RC0603FR-071KL7K2rot s i seR p i hC00-10729-70409R ,309R, 1/10W, 1%3K3rot s i seR p i hC00-10339-70209R ,109R, 1/10W, 1%K01rot s i seR p i hC00-20019-70349R ,839R ,739R,0603,1/10W,1%,RC0603FR-0710KLR934, R935, R941, R942, R944, R94507-94702-00Chip Re

38、sistor47K, 1/10W, 1%K001rot s i seR p i hC00-30019-70649R,0603,1/10W,1%,RC0603FR-07100KLK33rot s i seR p i hC00-20339-70939R ,029R ,919R, 1/10W, 1%1rot s i seR p i hC10-90109-70429R ,329R,0805,1/8W,5%7.4rot s i seR p i hC10-80749-70229R ,819R ,719R, 1/8W, 1%01rot s i seR p i hC10-90019-70809R ,709R,

39、 1/8W, 1%81rot s i seR p i hC10-90819-70259R 159R,0805,1/8W,1%,RC0805FR-0718RL22rot s i seR p i hC10-90229-70239R,139R,0805,1/8W,1%,RC0805FR-0722RL001rot s i seR p i hC10-00019-70019R,0805,1/8W,1%,RC0805FR-07100RLK1rot s i seR p i hC20-10019-70619R ,519R, 1/4W, 1%K5.74rot s i seR p i hC20-25749-7041

40、9R ,319R,1206,1/4W,1%,RC1206FR-0747K5LK57.4rot s i seR p i hC60-15749-70039R ,929R,2512, 1W, 1%01rot s i seR p i hC60-90019-70629R ,529R, 1W, 1%2K2rot s i seR p i hC60-22209-70829R ,729R, 1W, 5%CAPACTIORTJ201H1G0C8061C,OPN,3060,V05, Jn1DMS rot i capaC c imareC01-15201-62809C ,709CC903, C904, C905, C

41、90626-22251-20Ceramic Chip Capacitor2.2nJ,50V,0603,COG,GRM1885C1H222JA01DC903, C904, C905, C906or 26-22251-10Ceramic Capacitor SMD2n2J,50V,0603,NPOR7X,3060,V61,Ku2.2rot i capaC p i hC c imareC02-11522-62219CR7X,3060,V01,Ku01DMS rot i capaC c imareC01-11601-62019C ,909COPN,5080,V001, JP74rot i capaC

42、p i hC c imareC10-21074-62279C 179CK574C1R5X2102C,5080,R5X,V61,Ku7.4DMS rot i capaC c imareC10-11574-62349C 129CTK601C1R5X2102C,R5X,5080,V61,Ku01DMS rot i capaC c imareC12-11601-62229C ,119CJ274A2G0C2102C,OPN,5080,V001, Jn7.4DMS rot i capaC c imareC10-21274-62239C 139CTK401H1R7X2102C,R7X,5080,V05,Kn

43、001DMS rot i capaC c imareC11-15401-62549C ,939C,839CC915, C916, C917, C918, C933, C93426-10412-01Ceramic Capacitor SMD100nFK,100V,0805,X7RTK401E2R7X6123C,R7X,6021,V052,Kn001DMS rot i capaC c imareC20-22401-62029C ,919COPN ,V002 ,%2 ,Fp051DMS rot i capaC c imareC20-22151-62419C ,319CC951 C952 C953 C

44、954 C955 C956 C959C96026-22212-21Ceramic Chip Capacitor2200pF,100V,NPO,080500-16401-52829C ,729CMetallized Polyester FilmCapacitorCL23B-63V-104KR, C241J104K20A20100-16474-52629C ,529CMetallized Polyester FilmCapacitorCL23B-63V-474JR, C241J474J20A2012? C901, C90206-10051-09ALU ElectrolyticCapacitorCD

45、71H,10uF,50V,9.5uF10uF,105,F5.0C901, C902or 06-10051-11Bi-polarized AluElectrolytic CapacitorCD71H,10uF,50V,20%,105,F5.0C94106-10121-02Alu Electrolytic Capacitor CD263(X),100uF,25V,20%,105,F5.0C935, C93606-22151-03Alu Electrolytic Capacitor CD281 220UF/50V 10X16MMC935, C936or 06-22151-04Alu Electrol

46、ytic Capacitor CD281 220UF/50V H1,VM2.0,FR-4,1.6mm , 2Layers,1Oz, TG130,16676mm DIODESD1, D233-44148-17Switch Diode1N4148ICIC1, IC203-04558-01Dual OPAMPRC4558DRTRANSISTORSQ1, Q231-01815-03TransistorC1815 SOT23RESISTORR17, R1807-94709-00Chip resistor47,0603,1/10W,1%,RC0603FR-0747RLTR11, R1207-92200-0

47、0Chip Resistor220,0603,1/10W,1%,RC0603FR-07220RLR13, R1407-91001-00Chip Resistor1K,0603,1/10W,1%,RC0603FR-071KLR3, R407-93301-00Chip Resistor3.3K,0603,1/10W,1%,RC0603FR-073K3LR7, R8, R9, R10, R19, R2007-91002-00Chip Resistor10K,0603,1/10W,1%,RC0603FR-0710KLR5, R607-93302-00Chip Resistor33K,0603,1/10

48、W,1%,RC0603FR-0733KLR1, R2, R15, R1607-91003-00Chip Resistor100K,0603,1/10W,1%,RC0603FR-07100KLCAPACTIORC13 C1426-22151-00Ceramic Chip Capacitor220PJ,50V,0603,NPOC5, C626-33051-00Ceramic Chip Capacitor33pJ,50V,0603,NPO,C1608C0G1H 330JTC3, C4, C11, C1226-47151-00Ceramic Chip Capacitor470pJ,50V,0603,N

49、POC7, C8, C9, C1026-10421-10Ceramic Capacitor SMD100nK,25V 0603,X7RC1, C206-10051-01ALU ElectrolyticCapacitorCD263(x)，10uF/50V, 20%,INDUCTORL1, L208-04102-11Ferrite Bead SMD74279205 1000ohm100MHzPOTVR109-01503-02Variable ResistorR1121GOXH1G503YJ0000CONNECTORSCJ106B14-29808-00CableUL2468#26AWG*8P,L=8

50、0mmRCA1, RCA217-01002-46RCAAV2-8.4-14PB2, gold plating PCB-4:LED BOARDPART NO.DESCRIPTIONPCB INFO01-29804-01LED BOARD02-29804-01LED BOARDSMTA16-29804-22LED PCBVM2.0,FR-4,1.6mm ,2Layers,1Oz, TG130A16-29840-22LED PCB ASSM4-1,VM2.0,FR-4,1.6mm ,2Layers,1Oz, TG130,118172mmICUT103-00595-05shift register74