NAD-CI9120-pwr-sm 维修电路原理图.pdf

《NAD-CI9120-pwr-sm 维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《NAD-CI9120-pwr-sm 维修电路原理图.pdf（14页珍藏版）》请在收音机爱好者资料库上搜索。

1、NADSERVICE MANUALCI 9060/9120CI 9060/9120SIX CHANNEL AMPLIFIERTWELVE CHANNEL AMPLIFERSIX CHANNEL AMPLIFIERTWELVE CHANNEL AMPLIFER 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 MANUFA

2、CTURERS 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 DOO

3、THERWISE, 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 SURE TH

4、AT 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, STRAI

5、N 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 REMOV

6、E 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 RESIS

7、TOR 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 CIRCUITM

8、ODIFICATIONS.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 TRANSFORMER

9、DURING 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. ME

10、ASURE 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 CONSTITUTES A

11、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 HIGH H

12、UMIDITY 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. WA

13、LL 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 FOR

14、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 CAR

15、T. 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 GENERIC

16、ALLYAPPROVED 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 ANEQUILAT

17、ERAL 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 OF I

18、MPORTANTOPERATING AND MAINTENANCE (SERVICING) INSTRUCTIONS IN THELITERATURE ACCOMPANYING THE APPLIANCE.2RadioFans.CN 收音机爱 好者资料库SERVICING PRECAUTIONSCAUTION : Before servicing the A/V Receiver covered by thisservice data and its supplements and addends, read and follow theSAFETY PRECAUTIONS. NOTE : i

19、f unforeseen circumstancescreate 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 b

20、efore:(1) Removing 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

21、 incorrect polarity 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 solutio

22、n tothe contacts with 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.

23、5. Do not apply AC 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 instr

24、ument ground lead last.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 p

25、arts(Note 1) should 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 calledEle

26、ctrostatically Sensitive (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 h

27、andling any semiconductor 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 ap

28、plying power to the 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 ESd

29、evices.4. Use only 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 remov

30、e a replacement ES 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 protecti

31、ve material from theleads 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 handin

32、g unpackaged replacementES 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.)3SpecificationsPower Rating85 Watts continuous average power into 6 Ohm

33、s at any frequency between 20Hz and 20kHz with all channels driven at less than 0.03% THD.86 Watts continuous average power into 4 Ohms at any frequency between 20Hz and 20kHz with all channels driven at less than 0.03% THD.IM Distortion (SMPTE)80 Watts into 6 Ohms 0.03 %80 Watts into 4 Ohms 0.03 %I

34、M Distortion (CCIF, Any Combination from 1kHz to 20kHz)80 Watts into 6 Ohms 0.03 %80 Watts into 4 Ohms30Dynamic Headroom into 6 Ohms1.6dBOMC Activation10mV rms12V Trigger Input Voltage Range10.0V to 20.0V DC, 100k Ohms12V Trigger Output Current25 5mA, 470 OhmsInput Impedance25k OhmsInput Sensitivity

35、80 Watt into 6 Ohms1V rms1 Watt into 6 Ohms114mV rmsDamping Factor 20Hz to 20kHz 31Rise Time5kHz, 50V peak-to-peak square wave,20% to 80%4 sPower Consumption (Continuous, All Channels Driven)Quiescent84/168VAMaximum960/1920VA80 Watts into 6 Ohms744/1488VA80 Watts into 4 Ohms900/1800VAGENERALPower (a

36、vailable in 240V)120VAC/50-60HzAmbient Operating Temperature 100 F (40 C)Operating Temperature68 F (20 C)above ambient temperatureVentilation Air Flow150 cubic feet/minute maximumNet Chassis Dimensions17.2x5.3x17.8 inches (437x133x451 mm)or 3 rack heightsMaximum Gross Dimensions18.9x19.0 x5.7 inches

37、 (480.1x481.7x144.8 mm)(includes rack mounting hardware,feet and speaker terminals)Weight CI 9060, Packed58 lb (26.4 Kg), 68 lb (31 Kg)Weight CI 9120, Packed80 lb (36.5 Kg), 90 lb (41 Kg)4+15V-15V+15VA-15VAR-INL-ININ5IN3IN1IN6IN2IN4IN5IN2IN4IN6IN1IN3-15V+15V+15VA-15VA-15VA+15VA1C80.1uF1Q22SC1815GR12

38、1RCA8RCA JACK1R2910 (C Version)121RCA1*RCA JACK121RCA6RCA JACK1R1100KCW3121RV320K1R2610 (C Version)121RCA9RCA JACK1R2100K13284U1AOPA21341R3210 (C Version)1R274.99K1R19220K1Q62SC1815GR1R4*1 (C Version)1R21220KCW3121RV220K1R17220K1R8*1 (C Version)CW3121RV620K+121C64.7uF 10V1C110.1uF121RCA11RCA JACKCW3

39、121RV120K121RCA14RCA JACK1R351 (C Version)121RCA3*RCA JACK1R15220K1C100.1uF1Q42SC1815GR1R13220K1D31N41481D41N4148756U1BOPA21341D11N4148+121C44.7uF 10V1R374.99K13284U2AOPA21341D21N41481R334.99K121RCA13RCA JACK121RCA16RCA JACK1C120.1uF1R244.99K+121C74.7uF 10V12345671P47PIN1R314.99K1R344.99K121RCA4RCA

40、JACK1Q52SC1815GRCW3121RV420K756U2BOPA21341C210pF121RCA15RCA JACK1R5100K1R364.99K121RCA10RCA JACK1R12100KCW3121RV520K121RCA5RCA JACK+121C54.7uF 10V121RCA7RCA JACK1R2230M1R9100K1R284.99K1C130.1uF1R3810K1Q32SC1815GR1R20220K1Q12SC1815GR121RCA2RCA JACK1R1410 (C Version)1R775.01R304.99K+121C34.7uF 10V1R18

41、4.99K121RCA12RCA JACK+121C14.7uF 10V1R164.99K1R1175.01R6100K1R375.01R2310 (C Version)1R254.99K1R10100KFlexPadNOTE:Six RCA Jumpers are provided for eachFlexPad that is installed in a chassis. ForMono operation, an RCA Jumper is installedon the rear panel from J5 to J6, another fromJ7 to J8, another f

42、rom J9 to J10, anotherfrom J11 to J12, another from J13 to J14,and the last from J15 to J16. J17 is notneeded, and omitting it prevents the userfrom continuing the daisy-chain onto thesecond FlexPad, if installed.Components with the * mark are notinserted in CI9120s second Flexpad.1234561P16PIN12345

43、61P26PIN1Q7*2SC1815GR1D7*1N41481R39*1M+15VA121P3*2PIN1D51N41481D61N41481R412201R521001R402201C14470p1R432201R531001C18470p1R512201R571001C17470p1R492201R561001C16470p1R472201R551001C15470P1R452201R541001C19470p1R422201R442201R462201R482201R50220-15V-15V-15V-15V-15V-15V+15V+15V+15V+15V+15V+15V1R62100

44、1R611001R601001R591001R581001R63100AmpInput2AmpInput3AmpInput1AmpInput4AmpInput5L-INR-INAmpInput6AmpInput1AmpInput2AmpInput3AmpInput4AmpInput5AmpInput6INPUT-SENCEINPUT-SENCEIn SenceIn SenceTo Mother Board 4P7 or Slave Mother board 5P7To a Trigger Board 9P4To 2nd or 4th Amp Module 2P3To 1st or 3rd Am

45、p Module 2P3CH1 or CH7INCH1 or CH7INININININOUTOUTOUTOUTOUTCH2 or CH8CH2 or CH8CH3 OR CH9CH5 or CH11CH6 or CH12CH3 or CH9CH4 or CH10CH4 or CH10CH5 or CH111C20*0.1uF1R6410/1W1C2133uF1C2233uF1C2333uF1C2433uF1C2533uF1C2633uF1R7047k1R6947k1R6847k1R6747k1R6647k1R6547k1C2910uF1C3010uF1C3210uF1C2810uF1C271

46、0uF1C3110uF+15V-15V12341P54PINR-INL-INNote:IN CI9060, 1P5 IS NOT INSERTTo Another Flex-pad Board 1P51C330.1uFINPUT-SENCETEXTE C B2SC1815GR12348765OPA2134OUT A-IN A+IN AV-+IN B-IN BOUT BV+FlexPadTMC 2000 NAD Electronics International, a division of Lenbrook Industries LimitedATO LogicTMC 2000 NAD Ele

47、ctronics International, a division of Lenbrook Industries LimitedSleep/Wake+121C933uF3.3 (AH Version)3.3 (AH Version)3.3 (AH Version)3.3 (AH Version)3.3 (AH Version)3.3 (AH Version)3.3 (AH Version)3.3 (AH Version)512345CI9120 AC INPLUG2T3StandbyTransformerFUSE HOLDER20AT1Main TransformerT2Main Trans

48、former123451233PINJV1V12JAJV2V12JA1239P33PIN129P42PINFAN1FANFAN2FANFAN3FAN12W282PIN12W272PIN12W262PINSW2SPDTSW1SPDT129P22PIN122PINTo Mother Board 4P1To Flexpad 1P3Trigger And Switch BoardNote:In CI9120, Use 3 fansIn CI9060, Use 2 fans, omit FAN3To Mother Board 4P65RT10.1 5W5RT20.1 5W5RT30.1 5W5RT40.

49、1 5W5RT50.1 5W5RT60.1 5W5PO1speaker terminal5PO2speaker terminal5PO3speaker terminal5PO4speaker terminal5PO6speaker terminal5PO5speaker terminalRETURN1RETURN2RETURN3RETURN4RETURN5RETURN6OUTPUT1OUTPUT2OUTPUT3OUTPUT4OUTPUT5OUTPUT65D21.5A5C3680uF 35V5C15680uF 35V5C24.7uF 50V5C134.7uF 50V213IN5U2LM79151

50、23IN5U1LM78155C80.1uF5C120.1uFAC1AC2+15V-15V123456789105P1010PIN123456789105P1110PIN+15V-15V12345675P77PIN+15V-15V+15VA-15VA12345675P206PIN12345675P217PIN+35V2+35V2-35V2-35V2OUTPUT6OUTPUT5OUTPUT4+15V-15VOUTPUT3OUTPUT2OUTPUT11234565P126PIN-15VA+15VAOMC-SENSETEMP-SENSETEMP PRO+35V2-35V25M11PIN5M21PIN5