Nikko-Alpha220-pwr-sm2 电路图 维修手册.pdf

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1、CONTENTS SPECIFICATIONS. BLOCK DIAGRAM. DISASSEMBLY . CIRCUIT DESCRIPTION .,.46 PARTS LOCATION . SCHEMATIC DIAGRAM . ., 8 C. BOARD . ALIGNMENT. POWER TRANSISTORS MOUNTING ASSEMBLY . PARTS LIST. SEMICONDUCTOR DATA TRANSISTORS . FIELD EFFECT TRANSISTOR . DIODES, LEDS .,. ZENER DIODES . INTEGRATED CIRC

2、UITS . 18 Downloaded from www.M manuals search engine RadioFans.CN 收音机爱 好者资料库 ALPHA 220 SPECIFICATIONS AMPLIFIER SECTION Continuous Power Output per Channel: 20 20000 Hz (8 ohms) 20 20000 Hz (4 ohms) 1000Hz(8ohms). 1000Hz(4ohms). more than 120 Watts more than 130 Watts more than 120 Watts more than

3、130 Watts T. H. Distortion, 8 ohms: at Continuous Power Output. . no more than 0.008% at 1 Watt Power Output. . . . . . . no more than 0.02% T. H. Distortion, 4 ohms: at Continuous Power Output. . . no more than 0.02% I. M. Distortion, 8 ohms: at Continuous Power Output. . . no more than 0.01% at 1

4、Watt Power Output. . . . . . . no more than 0.02% IHF Power Bandwidth, 8 ohms: . . . . . . . 5 70000Hz Damping Factor at 1000 Hz, 8 ohms: . more than 60 GENERAL Power Requirement: TYPE .,. AC120V60Hz TYPE .,. AC220V50Hz TYPE . AC240V50Hz Power Consumption: . . . . . . . . . . . . . . 480 W (620 VA)

5、Ambient Temperature during Operation: . -1 0 30 * Specifications are su bject to change without notice. Frequency Response , NORMAL input, 8 ohms: at 1 Watt power Output. . . 10 100000Hz +0 , - 1dB Input Sensitivity for 120 Watts Power Output: MAIN IN .1V:t2dB Signal to Noise Ratio, I H F Au Network

6、: MAIN (NORMAL, DIRECT) .,. better than 105dB Signal to Noise Ratio, DIN Filter: MAIN IN (NORMAL, DI RECT) . better than 90dB. Channel Balance: .,. no more than 1dB Residual Hum and Noise, 8 ohms: . no more than 0.5mV Idling Current:. 40120mA Midpoint Voltage: .,. 0:t20mV Muting Delay Time: .37secon

7、ds Dimensions: Width.482mm (19 inches) Height .138mm (51/3inches) Depth.344mm(131/2inches) Weight, without package: . 13.5 kg (29.7Ibs) Downloaded from www.M manuals search engine RadioFans.CN 收音机爱 好者资料库 SW3: DIRECT INPUT - NO (3) J:1 ., 1:- - - - - - - - - - - - V - - - - - - - - - - - - - - - - -

8、; 1 I + FIRST STAGE 2ND STAGE PRE DRIVER VARIABLE DRIVER 3) I WITH CURRENT BIAS 1 - INPUT ReM WI +,2.IV j ;: I! R701 - R5 f -11.1V 8. S B R71 8 01 11.1V I.,. NOTES, 1. SCHEMATIC IS SUBJECT TO CHANGE WITHOUT NOTICE. UNLESS OTHERWISE SPECIFIED 2. RESISTANCE VARUES ARE IN OHMS. K=IOOO; M=TOOO OOO 3. CA

9、PACITANCE VALUES 1.0 AND ABOVE ARE IN pF OR .F IP = pF, M = .FI. LESS THAN 1.0 ARE IN .F. IELECTROL YTIC CAPACITANCE VALUES ARE IN .F/WV. 4. VOLTAGES ARE MEASURED TO CHASSIS GROUND WITH A DC VOLTMETER +1il1V , R7 15 R71 61 10 +,v +63. Bg; ; .I;+ R I+ :1!2tt 85. v- -. R710 R76 pcDRIVER PCB SCHEMATIC

10、SYMBOLS, POLYESTER FILM CAPACITOR BIPOLAR CAPACITOR 8 NONFLAMMABLE RESISTOR WARNING, p;AK;S .-!: 115 ,. AWN +50 .1! :;-, ,0 A ffued Dd: Double.d;!fu,ed Df: Drift-field E . Epitaxial Grown Junction Me P . Planer Pc: Point-contact Td: Triple-diffused MAXIMUM AATINGSAb,ol,-Moxlm,m Vol, ELECTAICAL CHAAA

11、CTEAISTICSTypl, Vol,ITA-25C 001, o,hwl ,pllI,dl ITA-25Cool,0,wI,pilld) DEVICESTAUC-CoIItor- Emit,-CoIIwCoIIwJoo,ooColi, C,offSo Fo,rd-CnCoIIto,-EmlGolo-Bdwldh P,od,0, MANU- APPLICATIONSto-Boto-B,Cneo,OIi,-T,mp.-CTmf AoSioo Volt. VCE Copool- Dth, TYPETUAEIVolt.,eVolt.gomo FACTUAEA VCBOVEBOICBOVCBhFEV

12、CE VCEI,1fob VCBICCob IvlIVIImAIImWII,AIIV)IvlImAIIv)1m A) ImAIIMH IVIImAIIpFI 2SA9B5PNP 120-5A 25W 150120 100 300100lBO 200 Complomooyo IP.Pow omp-Slo ITo-25mox- 320mox- 2SC2275 NEC 2SA992PNP 120500125 120 300 100 Complomooty to NEC. FILow 00 Slomox- - BOOmox. mox-2SC1B45 2SA1015PNP 150400125 120 1

13、00 Complomoo,yo TOSHIBA. GAlG.I Slomox.- 400 mox. mlo.mox-2SC1B15 2SA1095PNP 16015A 150W 150160 500 Complomootyo . AIPow.mp- SloITo-25mox- 160 mox- lA350 2SC2565 TOSHIBA 2SA44PNP 150 lOW 150150 12010 Complomoo,y to TOSHIBA. YID,io SloITo-25mox- - 240mox. 2SC2704 2SB772PNP 150 100 200100 Complomoo,y

14、to Pow.mp-SI. mox.- 320mox. 2SDBB2 NEC 2SC1B15NPN 150400125 120 100 Complomooy to GAIGo,Slo mox-_400mox- mlo-mox-2SA1015 TOSHIBA 2SCl845NPN 120500125 120 300 Compl,m,y to . FILow 001 Slo mox.- BOO mox-mox.2SA992 NEC 2SC1941NPN 160 BOO150160 135 120 , K)D,ioSI. mox.- 400mox. mox- NEC 2SC2229NPN 200BO

15、O150 20010 , YIDrlo Si-mox- - 240mox. 120 mox. TOSHIBA 2SC2235NPN 120BOO900150 120100 100, YI0,10 Slomox- - 240mox- 500120 mox. TOSHIBA 2SC2240NPN 120100300125 120 200 IGA. BLILow Noi Slo mox.- 700mox. 100TOSHIBA 2SC2275NPN 120 25W 150120 100 300100200 200 Compl,mooy to IP. 01Pow omp.Si- ITo-25mox.-

16、 320mox. 2SA9B5 NEC 2SC2565NPN 16015A 150W 150 lA200 Complomoo,y to . AIPow.mp.Slo ITo-25mox. 160- 160 mox. 500 2SA1095 TOSHIBA 2SC2704NPN lOW 150 Complomoo,yo , YIDrl,Slo 150 ITo-25mox. 150- 240 mox- 20010 2SA44 TOSHIBA 2SDBB2NPN 150 100 200100 Complomoyo NECPow.mp- Slomox- - 320mox. 2SB772 FIELD E

17、FFECT TRANSISTOR MAXIMUM AATINGS Ab,ol,-Moxlm,m Vol ELECTAICAL CHAAACTEAIS;ICSTypl, Vol,ITA-25C,oI0 o,hwl lflodi ITA-25C ,oloothwlplflodl DEVICE APPLlCA-STAUC-G.,-toGo-to- DmToCh.ooolG. L.kGo,o 00 0,10 CG. to 500Fo,wd TfFeod Book PowG.loNol FI MANU- 0,10500C,ntC,noDiI.-Tompo,- CnoB.kdowo Coff Volt.,

18、oAdmi,oC.olmoICommoo 5001 TYPETIONSTUAEtVol,oVolt.tloo IGSS FACTUAEA VGSIYtor- 1(;00VGSDThT, VIBAITo loss ToToTo GpS Coodltlo (V ; loffl IVIIVIImAIImAIImWI Coodltlo, I oAICoodltlo, ImAICoodl,loo, IVI Cooditlo Im,1Cooditlo, IpFI Coodi,lo, IdBI Coodo, IdBI 2SK150 VGS- VDS-tOV VDG-l0V VDS-l0V Low 001 N

19、-,h,1200/ 12530V VDS-l0VVGS-O 10-0 1,-1 TOSHIBA IGAIDlff,I.,)0000ooit VDS-O mox.VGS-O f-l kH, f-l MH, 10-1 mA mox. omp.10 loss-f-l kH, 3mA DIODES, LED MAXIMUM AATINGSAb,ol, - Moxlm,m V.I ELECTAICAL CHAAACTEAISTICS Typl, V.I ITA-25C 001, othwl plflodl ITA-C 0010 othol ,;111 DEVICE STAUCTUAE AooPkAooP

20、.kPkAoo,oFowd Joo,ooToFowd C,n,Fow, Aoo, C,nt MANU. APPLICATIONS S,oAooVolt.,oFodFo,dAtlflodS,oTompoPow IFmlo r-:;:;-lAm. -:;:;- O,h, TYPE Volto,oVol,oVolt.,oCnC,n,C DI,ploo -Imox To FACTUAEA I coO :iOO VAM,oVAMVFMIFMIFM,o (VIIVIIv)IVIImAI ImAIIAItC)(mWI(mAlIVIIVI ImAI(,AIIVI 0A900,Go- 1500.4 MATSUS

21、HITA lS2076 Modl,m p. SI-450150175 250 HITACHISwit,hlo, lS2076A Mom p. SI-450150 175250 HITACHISwlhio, GPtO AtllI51- 100175 1.1 GENEAAL -4002 INSTAUMENT W02Aoill Si- 200200-5A125 R,h - 50CIW GENEAAL IBId,1 INSTAUMENT S10VB20Atlfi 51- 200lOA200150 (B,Id,olSHINDENGEN BA5504SLomp IG.AIA, 300IF - 50100

22、100 Iv-BOmd STANLEY ilF-20mAI PA5527SLomp (G.P 100IF -3D 100 I V - -2 md STANLEY IIF-l0mAI ZENER DIODES MAXIMUM AATINGS Ab,ol, - Moxlm,m VolELECTAICAL CHAAACTEAISTICSTypl, V.I (T A- 25C 001, othwl lflOOI ITA-C ooloo,hwl lfio DEVICE STAUCTUAE t To2000Joo,ooZ, Volt.,. Dlff.ATomp. CooffltAoo CMANU- APP

23、LICATIONS PowC,Tompo .-:r;- Dtho TYPE ToTo FACTUAEA Diip.tloo Coooo,Cooo,CootlooCootlo, MINTYPMAXTYPMAXTYPMAXMAX ImWIIAItCIIVIIVIIVIImAIIfIllImAIIo;/CI10;/, ImAIAIIVI AD13EO3AoISi-400 17512_13_ NEC ADZ2EB4A,o,Si-400 17521.22. NEC Downloaded from www.M manuals search engine ALPHA 220 INTEGRATED CIRCU

24、ITS AN6552 Manufacturer: MATSUSHITA Applications:Dual Operational Amplifier ABSOLUTE MAXIMUM RATINGS Supply Voltage .,. ,.,. :t18V Internal Power Dissipation . . . . , , . . , . . . . 500 mW Differential Input Voltage . . , . . , , . . , . . . , :t30 V Input Voltage .,.,., :t15V Storage Temperature

25、Range ., . - C to +125 Operating Temperature Range, , , . . -C to +75 ELECTRICAL CHARACTERISTICS(Vcc = :t15V, TA = +25C unless otherwise noted. PARAMETERCONDITIONSMINTYPMAXUNITS I nput Offset VoltageRs;10kSlmV I nput Offset Current200 I nput Bias Current500 Large-Signal Voltage GainR L ;. 2 kSl 100

26、V out = :t1 OV Output VoltageSwingR L ;. 2 kSl :t10:t13 Common ModeRejection RatioRs;10kSl Supply VoltageRejection RatioRs .; 10 kSl150 IlV!V Slew RateR L ;. 2 kSlIllS TERMINAL GUIDE (TOP VIEW) A+ IN v - B+ IN SCHEMATIC DIAGRAM (1/2 CIRCUIT) Vcc VEE OUTPUT 1 (7) 3 (5) INPUT 2 (6) Downloaded from www

27、.M manuals search engine NIKKO ELECTRIC MFG. CO. LTC. HEAD OFFICE 1, Okusawa 3-chome, Setagaya-ku, Tokyo 158, .Japan SALES OFFICE Mitsubishi Bank Bldg., 3-2, Oogenzaka 1 -choma Shibuya-ku, Tokyo 1 50, .Japan NIKKO ELECTRIC CORP. OF AMERICA HEAD OFFICE 320 Oser Ave., Hauppauge, N.Y. 11787, U. A. OFFI

28、CE 16270 Raymer St., Van Nuys, Ca. 81406, U. 965194E 80. November 1,500 Printed in Japan Downloaded from www.M manuals search engine NIKKOSERVICEDATA NO, 81-001 DATE May 15. 1981 Important Information for your Parts and Service Department MODEL: ALPHA 220ASSEMBLY: DRIVER PCB For the purpose of prote

29、cting the transistors in the power stage, replace capacitors and resistors on the DRIVER P. C. BOARD. 1. Capacitors C703 and C704 (100 pf) are replaced with new ones (820 pf). 2, Resistors R701 and R702 (2,7 kohms) are replaced with new ones kohms). These modifications are already done for the units

30、 bearing Serial No. C6534701 and up. Q701 (Q702) 2SK150A R701 (R702) 2 . 7K 1 K IN PUT GND C703 (C704) lOOP 820P PARTS LIST DELETE SYMBOL No.DESCRIPTIONPART No. 003, 704 Ceramic capacitor 232101K 100pf10% 50V R701, 702 Carbon film resistor 328272J 7 kohms?iW ADD SYMBOL No,DESCRIPTIONPART No. C703, 7

31、04 Ceramic capacitor 232821K 820pf10%50V R701, 702 Carbon film resistor 328102J 1 kohms?iW NIKKO ELECTRIC MFG. CO., L TO. HEAD OFFICE 4-1. Okusawa 3-chome, Setagaya-ku, Tokyo 158, .Japan SALES OFFICE Mtsubishi Bank Bldg., 3-2. Oogenzaka 1-chome. Shibuya-ku. Tokyo 150. .Japan NIKKO ELECTRIC CORP. OF AMERICA HEAD OFFICE 320 Deer Ave., Hauppauge. N.Y. 11787. U. A. OFFICE 7801 East Campton Blvd., Paramount. Ca. 90723. U. Downloaded from www.M manuals search engine Downloaded from www.M manuals search engine