NAD-CI980-pwr-sm维修电路原理图.pdf

《NAD-CI980-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-CI980-pwr-sm维修电路原理图.pdf（35页珍藏版）》请在收音机爱好者资料库上搜索。

1、NAD SERVICE MANUAL CI 980 MULTI-CHANNEL AMPLIFIER CI 980 MULTI-CHANNEL AMPLIFIER 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.6 PCB LAYOUT.20-24 EXPLODED VIEW PARTS LIST.36 CIRCUIT DIAGRAMS. TROUBLE SHOOTING GUIDE.10 EXPLODED VIEW

2、.35 .11-19 ELECTRICAL VIEW PARTS LIST.25-34 BLOCK 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 IN ANY WAY. NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFACTURERS APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID T

3、HE 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 INJU

4、RY 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 CAP

5、ACITOR 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. VOLTAGE

6、 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, CUBB

7、YHOLE 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 OBST

8、RUCT 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 PLATFORM

9、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 ON SL

10、OPING 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 AGAIN

11、ST 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 A FO

12、REST 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 MAY

13、 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 好者资

14、料库 SERVICING PRECAUTIONS CAUTION : Before servicing the poweramplifier 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 precaution

15、s in this publication, always follow the safety precautions. Remember Safety First: General Servicing Precautions 1. Always unplug the poweramplifier 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 poweramplifier 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

18、specified 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 poweramplifier and/or any of its electrical assemblies u

19、nless 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 pl

20、ug from 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 Part

21、s including 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

22、are 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 ass

23、embly, 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 el

24、ectrical 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 devi

25、ce. 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 p

26、ackage 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 replacemen

27、t ES 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.

28、 (Normally 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 RadioFans.CN 收音机爱 好者资料库 SPECIFICATIONS ENGLISHDEUTSCHNEDERLANDSSVENSKA 5 CI 980 Continuous Output Po

29、wer 8 Ohms 4 Ohms 8 Ohms in Bridge Mode 8 x 50W (ref. rated THD, 20Hz-20kHz, all channels driven) 8 x 60W 120W Rated 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

30、1.1V (ref. rated power) Voltage Gain33dB Frequency Response20Hz-20kHz 1dB Signal/Noise Ratio, A-Weighted 80dB (ref. 1W/8 ohms) 100dB (ref. 50W) Trigger5-30V In (AC/DC) -52dBV, 12V Out Time to Automatic Standby (without signal)30 minutes GENERAL Rated Power600W (120V 60Hz, 230V 50Hz) Idle Power26W St

31、andby power1, VM2.1,FR-4,1.6mm 2Layers,2Oz,TG130,109 146mm DIODES D902, D903, D904, D905, D906, D907, D919 33-44148-17Switch Diode1N4148W-FDICT D915, D916, D917, D91833-20120-01DIODE SMDMURS120T3G TRANSISTORS 32-TOS ,G1TL1045TBMMrot s i snarT10-10450-13409Q,209Q 32-TOS ,G1TL1555TBMMrot s i snarT10-1

32、5550-13309Q,109Q IC FBPRTM2034RIPMA l at i g iD10-20340-30109CI RESISTOR 026rot s i seR p i hC00-00269-70609R , 509R, 1/10W, 1% K1rot s i seR p i hC00-10019-70639R,0603,1/10W,1%,RC0603FR-071KL 7K2rot s i seR p i hC00-10729-70409R , 309R, 1/10W, 1% 3K3rot s i seR p i hC00-10339-70209R , 109R, 1/10W,

33、1% K01rot s i seR p i hC00-20019-70349R , 839R , 739R,0603,1/10W,1%,RC0603FR-0710KL R934, R935, R941, R942, R944, R94507-94702-00Chip Resistor47K, 1/10W, 1% K001rot s i seR p i hC00-30019-70649R,0603,1/10W,1%,RC0603FR-07100KL K33rot s i seR p i hC00-20339-70939R , 029R , 919R, 1/10W, 1% 1rot s i seR

34、 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, 1/8W, 1% 81rot s i seR p i hC10-90819-70259R 159R,0805,1/8W,1%,RC0805FR-0718RL 22rot s i seR p i hC10-90229-70239R,139R,0805,1/8W,1%,RC0805FR-0722RL 001

35、rot s i seR p i hC10-00019-70019R,0805,1/8W,1%,RC0805FR-07100RL K1rot s i seR p i hC20-10019-70619R , 519R, 1/4W, 1% K5.74rot s i seR p i hC20-25749-70419R , 319R,1206,1/4W,1%,RC1206FR-0747K5L K57.4rot s i seR p i hC60-15749-70039R , 929R,2512, 1W, 1% 01rot s i seR p i hC60-90019-70629R , 529R, 1W,

36、1% 2K2rot s i seR p i hC60-22209-70829R , 729R, 1W, 5% CAPACTIOR TJ201H1G0C8061C,OPN,3060,V05, Jn1DMS r ot i capaC c imareC01-15201-62809C , 709C C903, C904, C905, C90626-22251-20Ceramic Chip Capacitor2.2nJ,50V,0603,COG,GRM1885C1H222JA01D C903, C904, C905, C906or 26-22251-10Ceramic Capacitor SMD2n2J

37、,50V,0603,NPO R7X,3060,V61,Ku2.2rot i capaC p i hC c imareC02-11522-62219C R7X,3060,V01,Ku01DMS r ot i capaC c imareC01-11601-62019C , 909C OPN,5080,V001, JP74rot i capaC p i hC c imareC10-21074-62279C 179C K574C1R5X2102C,5080,R5X,V61,Ku7.4DMS r ot i capaC c imareC10-11574-62349C 129C TK601C1R5X2102

38、C,R5X,5080,V61,Ku01DMS r ot i capaC c imareC12-11601-62229C , 119C J274A2G0C2102C,OPN,5080,V001, Jn7.4DMS r ot i capaC c imareC10-21274-62239C 139C TK401H1R7X2102C,R7X,5080,V05,Kn001DMS r ot i capaC c imareC11-15401-62549C , 939C,839C C915, C916, C917, C918, C933, C93426-10412-01Ceramic Capacitor SM

39、D100nFK,100V,0805,X7R TK401E2R7X6123C,R7X,6021,V052,Kn001DMS r ot i capaC c imareC20-22401-62029C , 919C OPN ,V002 ,%2 ,Fp051DMS r ot i capaC c imareC20-22151-62419C , 319C C951 C952 C953 C954 C955 C956 C959 C960 26-22212-21Ceramic Chip Capacitor2200pF,100V,NPO,0805 00-16401-52829C , 729C Metallized

40、 Polyester Film Capacitor CL23B-63V-104KR, C241J104K20A201 00-16474-52629C , 529C Metallized Polyester Film Capacitor CL23B-63V-474JR, C241J474J20A201 2? RadioFans.CN 收音机爱 好者资料库 C901, C90206-10051-09 ALU Electrolytic Capacitor CD71H,10uF,50V,9.5uF10uF,105,F5.0 C901, C902or 06-10051-11 Bi-polarized A

41、lu Electrolytic Capacitor CD71H,10uF,50V,20%,105,F5.0 C94106-10121-02Alu Electrolytic Capacitor CD263(X),100uF,25V,20%,105,F5.0 C935, C93606-22151-03Alu Electrolytic Capacitor CD281 220UF/50V 10X16MM C935, C936or 06-22151-04Alu Electrolytic Capacitor CD281 220UF/50V H1,VM2.0,FR-4,1.6mm , 2Layers,1Oz

42、, TG130,166 76mm DIODES D1, D233-44148-17Switch Diode1N4148 IC IC1, IC203-04558-01Dual OPAMPRC4558DR TRANSISTORS Q1, Q231-01815-03TransistorC1815 SOT23 RESISTOR R17, R1807-94709-00Chip resistor47,0603,1/10W,1%,RC0603FR-0747RLT R11, R1207-92200-00Chip Resistor220,0603,1/10W,1%,RC0603FR-07220RL R13, R

43、1407-91001-00Chip Resistor1K,0603,1/10W,1%,RC0603FR-071KL R3, R407-93301-00Chip Resistor3.3K,0603,1/10W,1%,RC0603FR-073K3L R7, R8, R9, R10, R19, R2007-91002-00Chip Resistor10K,0603,1/10W,1%,RC0603FR-0710KL R5, R607-93302-00Chip Resistor33K,0603,1/10W,1%,RC0603FR-0733KL R1, R2, R15, R1607-91003-00Chi

44、p Resistor100K,0603,1/10W,1%,RC0603FR-07100KL CAPACTIOR C13 C1426-22151-00Ceramic Chip Capacitor220PJ,50V,0603,NPO C5, C626-33051-00Ceramic Chip Capacitor33pJ,50V,0603,NPO,C1608C0G1H 330JT C3, C4, C11, C1226-47151-00Ceramic Chip Capacitor470pJ,50V,0603,NPO C7, C8, C9, C1026-10421-10Ceramic Capacitor

45、 SMD100nK,25V 0603,X7R C1, C206-10051-01 ALU Electrolytic Capacitor CD263(x)，10uF/50V, 20%, INDUCTOR L1, L208-04102-11Ferrite Bead SMD74279205 1000ohm100MHz POT VR109-01503-02Variable ResistorR1121GOXH1G503YJ0000 CONNECTORS CJ106B14-29808-00CableUL2468#26AWG*8P,L=80mm RCA1, RCA217-01002-46RCAAV2-8.4

46、-14PB2, gold plating PCB-4:LED BOARD PART NO.DESCRIPTION PCB INFO 01-29804-01LED BOARD 02-29804-01LED BOARDSMT A16-29804-22LED PCBVM2.0,FR-4,1.6mm ,2Layers,1Oz, TG130 A16-29840-22LED PCB ASSM 4-1,VM2.0,FR-4,1.6mm ,2Layers,1Oz, TG130,118 172mm IC UT103-00595-05shift register74HC595PW,118 UT3103-00082

47、-01Dual OPAMPTL082BCDR DIODES DT31, DT3233-44148-17Switch Diode1N4148 DT3333-40321-00Schottky Barrier DiodeBAS321 LED1, LED2, LED3, LED433-50326-04 3 RED BLU LED Common Cathode 3,Red Blue,BL-BUBB5201-YJ-T05 TRANSISTORS QT1, QT2, QT3, QT4, QT5, QT6, QT7, QT8 31-01015-03TransistorA1015 SOT23 QT931-018

48、15-03TransistorC1815 SOT23 QT1331-00031-00TransistorTIP31CG 2? RadioFans.CN 收音机爱 好者资料库 RESISTOR RT21, RT22, RT2307-91000-00Chip Resistor100,0603,1/10W,1%,RC0603FR-07100RL RT3, RT7, RT11, RT1507-95100-00Chip Resistor510,0603,1/10W,1%,RC0603FR-07510RL RT2507-91001-00Chip Resistor1K,0603,1/10W,1%,RC0603FR-071KL RT2, RT6, RT10, RT1407-95101-00Chip Resistor5.1K,0603,1/10W,1%,RC0603FR-075K1L RT3507-91602-00Chip Resistor16K,0603,1/10W,1%,RC0603FR-0716KL RT1, RT4, RT5, RT8, RT9, RT12, RT13, RT16, RT24, RT31, RT34 07-91002-00Chip Resistor10K,0603,