McIntosh-MA6100-pre-sm(1) 维修电路原理图.pdf

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1、MA 6100PREAMP AMPLIFIERSERVICE INFORMATIONSTARTING WITH SERIAL NO. AE1001MclNTOSH LABORATORY INC. 2 CHAMBERS STREET BINGHAMTON, NEW YORKMA 6100RadioFans.CN 收音机爱 好者资料库MA 6100PERFORMANCE LIMITSPERFORMANCEMclntosh audio power ratings are in accordancewith the Federal Trade Commission Regulation ofNovem

2、ber 4, 1974 concerning power output claimsfor amplifiers used in home entertainment products.POWER OUTPUT70 watts minimum sine wave continuousaverage power output, per channel,both channels operating into 8 ohmsload impedance which is:23.7 volts RMS across 8 ohms40 watts minimum sine wave continuous

3、average power output, per channel,both channels operating into 16 ohmsload impedance which is:25.3 volts RMS across 16 ohmsOUTPUT LOAD IMPEDANCE8 ohms or 16 ohmsRATED POWER BAND20 Hz to 20,000 HzTOTAL HARMONIC DISTORTION0.2% maximum harmonic distortion atany power level from 250 milliwatts torated p

4、ower per channel from 20 Hz to20,000 Hz, both channels operatingINTERMODULATION DISTORTION0.2% if instantaneous peak power output is twicerated continuous average power or less per channelwith both channels operating for any combination offrequencies 20 Hz to 20,000 HzFREQUENCY RESPONSE20 Hz to 20,0

5、00 Hz +0 -0.5 dB at rated powerNOISE AND HUMPower amplifier: 95 dB below rated outputAux, Tape, Tuner: 90 dB below rated outputPhono Input, Tape Hd.: 76 dB below 10 mV inputRATINGSOUTPUT VOLTAGEAt TAPE output: Aux, Tape, Tuner: 300 mV withinputPhono: 300 mV with rated input;1.2 volts with 1.0 mV inp

6、ut at 1000HzTape Hd: 300 mV at 500 Hz withrated inputDAMPING FACTOR50 at 8 ohms output100 at 16 ohms outputINPUT SENSITIVITY AND IMPEDANCEPower Amplifier: 3 volts, 100,000 ohmsPhono 1 and Phono 2: 2.5 mV at 1000 Hz, 47,000ohmsTape Head: 3 mV, 47,000 ohmsTape, Aux, and Tuner: 300 mV, 250,000 ohmsBASS

7、 CONTROLS+ 16 dB to -16 dB at 20 HzTREBLE CONTROLS+ 16 dB to -16 dB at 20,000 HzLF FILTERActive filter, 12 dB per octave rolloff below 50 Hz;20 dB down at 20 HzHF FILTERActive filter, 12 dB per octave rolloff above 7000 Hz;20 dB down at 20,000 HzGENERAL INFORMATIONSEMICONDUCTOR COMPLEMENT36 Silicon

8、Transitors, 22 Silicon Rectifiers and Di-odes, 2 Silicon Bilateral Switches, 2 TriacPOWER REQUIREMENTS120 Volts, 50/60 Hz, 50 watts at zero signal output,380 watts at rated outputMECHANICAL INFORMATIONSIZEFront panel measures 16 inches wide (40.64 cm) by5 7/16 inches high (13.81 cm). Chassis measure

9、s15 inches wide (38.1 cm) by 13 inches deep (33.02cm), including Panloc shelf and back panel con-nectors. Knob clearance required is 1 (3.81 cm) infront of mounting panelWEIGHT34 pounds (15.42 kg) net, 46 pounds (20.87 kg) inshipping cartonRadioFans.CN 收音机爱 好者资料库MA6100 BLOCK DIAGRAMTONE & VOLUME CON

10、TROL PC BOARD 044-514NOTE 10MA 6100MA 6100RIGHT CHANNEL PREAMP PC BOARD 044-512EQUALIZATION PC BOARD 044-420LEFT CHANNEL PREAMP PC BOARD 044-512PREAMP SECTIONMA 6100 154-632MA 6100 MA 6100POWER OUTPUTSECTIONMA6IOO 154-631MA 6100LEFT CHANNELPOWER OUTPUTPC BOARD 044-480RIGHT CHANNELPOWER OUTPUTPC BOAR

11、D 044-480MA 6100REG & PHASE INVERTER PC BOARD 044-419Q418Q416Q417Q415LOCATION OF TRANSISTORS NOT ON PC BOARDTOPBOTTOMTOPBOTTOMMA 6100POWER SUPPLYSECTIONMA6IOO 154-616MA 6100 S C H E M A T I C NOTES1. Unless otherwise specified: Resistance values are in ohms , 1/4 watt,and 10% tolerance; Capacitance

12、values smaller then 1 are in microfarads(F); capacitance values greater than 1 are in picofarads (pF);inductors are in microhenries ( H) .2 . Printed c i r c u i t board components are outlined on the schematics bydotted l i n e s . The c i r c l e d numbers around the dotted l i n e s correspondto

13、the numbers on the PC Board layouts.3 . The heavy lines on the schematics denote the primary signal path.4. The terminal numbering of rotary switches is for reference only.5 . A l l voltages indicated on the schematics are measured under thefol1ow ing conditions:6. In units with Serial Nos below AE1

14、453; C415 & C416 are 1000pF.C413 & C414 are 1000F and C407 & C408 are 470pF.7. In early export units R429, R430, R447 & R448 are 478. In units with Serial Nos below AE2557; C I 1 7 and C118 are 12pF.9. In units with Serial Nos below AE2075; R309 is D308. (MclntoshPart No. 070-064)10. In units with S

15、erial Nos below AE2122; R211 & R212 are MclntoshPart No. 134-354 and R227 & R228 are Mclntosh Part No. 134-253.1 1 . In u n i t s with Serial Nos below AE3988; R421 , R422, R423 & R424are 100 5% 1/2W; R425, R426, R427, & R428 are used; D 4 1 7 ,D418, D419 & D420 are not used; R437 and R438 are used

16、and D4I5and D416 are not used.a. Use of an 11 megohm input impedance VTVM.b. A l l voltages 10% with respect to chassis ground.c. No signal at input terminals.d. AC input at 120 volts, 50/60 Hz.e. Front panel controls at:Volume F u l 1 y CW Tape mon. outInput selector Aux Tape copy outMode selector

17、Stereo F i l t e r s outBalance control Zero Phase outComo Flat Speakers outTone controls FlatMA 6100REPLACEMENT PARTSA l l parts not listed are common items obtain-able from radio parts jobbers.Replacement parts may be obtained when orderedby PART NUMBER from:Mclntosh Laboratory, Inc.C us tomer Ser

18、vice Department2 Chambers StreetBinghamton, New York 13903( telephone 607-723-3512)SymbolNumberC101 , 102C105, 106C107,108C 1 1 1 , 112C113, 114C 1 1 5 , 1 1 6C119, 120C123, 124C 1 2 5 , 1 2 6C 1 2 7 , 128C129, 130C I 3 1 ,132C 1 3 7 , 1 3 8C201 ,202C209.210C 2 1 2 ,213C301C302C303C305C306C307C312C

19、3 1 3 , 3 1 4C 3 1 7C401 ,402C403,404C419,420C427,428D301 ,302D303,304D305,306D307CAPACITORSDescriptionMylar . 47FTa. Elect 10FTa. Elect 10FMylar . 4FTa. Elect- 100FMylar . 1 FMylar . 22 FTa. Elect 100FMylar .22FMylar . 1 FMylar .022FMylar .01FMylar .47FMylar . 2 2 FMylar .01FMylar .022FMylar . 47FT

20、a. Elect 10FElect. 33FMylar .22FMylar 1FElect. 100F250V63V63V250V16V250V16V250V250V250V250V250V250V250V250V63V40V250V40VElect . 80/150/150/200F200/200/150/100VElect. 9300FElect. 220FElect. 150FElect. 470FElect. 10FTa. Elect 1 . 5 FDIODESS i . Rect i f i erS i . Rect i f ierS i . Rect i fierZener50V1

21、00V63V4V35V20V75VPartNumber064-069066-221066-178064-069066-226064-067064-068066-226064-068064-067064-102064-040064-069064-068064-040064-102064-069066-221066-204064-096064-088066-206066-191066-162066-201066-?05066-136066-173066-158070-041070-041070-031070-025D417,418D419,4200308D309D401 ,402D403,404D

22、405,406D407,408D409,410D411 ,412D 4 1 3 , 4 1 4D 4 1 5 , 4 1 6F401 ,402F403,404CB301L401 ,402Q101 , 102Q 103, 104Q105, 106Q107, 108QI09, 110Q l 1 1 , 1 1 2Q l 1 3 , 1 1 4Q 1 1 5 , 1 1 6Q301Q302Q303Q401 ,402Q403 ,404Q405,406Q407,408Q409,410Q411 ,412Q413, 414Q415,416Q417 ,418R20IR2IOR21 1R 2 1 2Si. Re

23、ctifierSi. RectifierSi. RectifierZener 20VSi. RectifierSi. RectifierSi. RectifierSi. RectifierSi. RectifierSi. RectifierGe. PNP TransistorSi. RectifierFUSESFuse 5AFuse 5ACircu i t B reaker 4ACHOKESChoke 4HTRANSISTORSSi . PNP transi storS i . PNP trans istorS i . NPN trans istorS i . NPN trans i stor

24、S i . NPN t rans i storS i . NPN trans i storS i . NPN transi storS i . NPN t rans i s torSI. NPN t rans i s torS i . PNP trans i storS i . NPN trans i storS i . PNP trans i storS i . PNP trans i storS i . NPN t rans istorS i . NPN trans istorS i . PNP t rans i storS i . NPN transistorSi . PNP trans

25、i storS i . NPN t rans istorS i . NPN trans i storPOTENTIOMETERSBa l ance con t ro lVo 1 ume cont ro lBass trim con t ro lBass trim control070-046070-046070-031070-064070-047070-046070-047070-047070-031070-031132-098070-047089-014089-014088-0071 2 2 - 1 0 5132-096132-096132-095132-093132-093132-0931

26、32-095132-095132-094132-096132-078132-056132-056132-081132-021132-032132-080132-079132-1281 3 2 - 1 2 8134-240134-239134-354134-254R215R2I6R227R228R3I3R314R401 ,402R433,434R435,436SIS2S3T30ISBS401 ,402TR401 ,402POTENTIOMETERSTreble controlBass controlTreble trim controlTreble trim controlRESISTORSWi

27、rewound 600 5WWirewound 1 . 5K 5WWirewound 3 . 6K 1 0WWirewound . 33 5WWirewound .33 5WSWITCHESInput selector switchPushbutton switchMode selector switchTRANSFORMERSPower t rans formerTHYRISTORS & TRIGGERSBilateral switchTriacFRONT PANEL & TRIMFront panelF ron t pane l end capsBalance control knobCo

28、mp cont ro l knobBass knob ( f ron t )Bass knob ( rea r )Treble knob (front)Treb le knob ( rear )Vo l u me con t ro l knobMode selector knobInput selector knobLAMPSPane l i l l urn i na t i on # 1 866Switch indicator #51MOUNTING SYSTEMShe l f bracket (right)Shelf bracket (left)Mount i ng temp l a te

29、 # 1 00Hardwa re packageMISCELLANEOUS ITEMSPlastic feetSh i pp i ng ca r tonOwners manua lL i ne cord134-238134-237134-253134-253139-043139-079139-047139-080139-080146-153150-01 1146-134044-418131 -004131-005044-423018-154044-375090-100044-375090-100044-375090- 100044-372044-372044-372058-014058-021043-622043-623038-179043-60801 7-156044-510038-61 1170-021MA 6100 SCHEMATIC PART NO. 038-810BE04200420C1025S7-M4810