McIntosh-MA6100-pre-sm维修电路原理图.pdf

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1、MA 6100 PREAMP AMPLIFIER SERVICE INFORMATION STARTING WITH SERIAL NO. AE1001 MclNTOSH LABORATORY INC. 2 CHAMBERS STREET BINGHAMTON, NEW YORK MA 6100 RadioFans.CN 收音机爱 好者资料库 MA 6100PERFORMANCE LIMITS PERFORMANCE Mclntosh audio power ratings are in accordance with the Federal Trade Commission Regulati

2、on of November 4, 1974 concerning power output claims for amplifiers used in home entertainment products. POWER OUTPUT 70 watts minimum sine wave continuous average power output, per channel, both channels operating into 8 ohms load impedance which is: 23.7 volts RMS across 8 ohms 40 watts minimum s

3、ine wave continuous average power output, per channel, both channels operating into 16 ohms load impedance which is: 25.3 volts RMS across 16 ohms OUTPUT LOAD IMPEDANCE 8 ohms or 16 ohms RATED POWER BAND 20 Hz to 20,000 Hz TOTAL HARMONIC DISTORTION 0.2% maximum harmonic distortion at any power level

4、 from 250 milliwatts to rated power per channel from 20 Hz to 20,000 Hz, both channels operating INTERMODULATION DISTORTION 0.2% if instantaneous peak power output is twice rated continuous average power or less per channel with both channels operating for any combination of frequencies 20 Hz to 20,

5、000 Hz FREQUENCY RESPONSE 20 Hz to 20,000 Hz +0 -0.5 dB at rated power NOISE AND HUM Power amplifier: 95 dB below rated output Aux, Tape, Tuner: 90 dB below rated output Phono Input, Tape Hd.: 76 dB below 10 mV input RATINGS OUTPUT VOLTAGE At TAPE output: Aux, Tape, Tuner: 300 mV with input Phono: 3

6、00 mV with rated input; 1.2 volts with 1.0 mV input at 1000 Hz Tape Hd: 300 mV at 500 Hz with rated input DAMPING FACTOR 50 at 8 ohms output 100 at 16 ohms output INPUT SENSITIVITY AND IMPEDANCE Power Amplifier: 3 volts, 100,000 ohms Phono 1 and Phono 2: 2.5 mV at 1000 Hz, 47,000 ohms Tape Head: 3 m

7、V, 47,000 ohms Tape, Aux, and Tuner: 300 mV, 250,000 ohms BASS CONTROLS + 16 dB to -16 dB at 20 Hz TREBLE CONTROLS + 16 dB to -16 dB at 20,000 Hz LF FILTER Active filter, 12 dB per octave rolloff below 50 Hz; 20 dB down at 20 Hz HF FILTER Active filter, 12 dB per octave rolloff above 7000 Hz; 20 dB

8、down at 20,000 Hz GENERAL INFORMATION SEMICONDUCTOR COMPLEMENT 36 Silicon Transitors, 22 Silicon Rectifiers and Di- odes, 2 Silicon Bilateral Switches, 2 Triac POWER REQUIREMENTS 120 Volts, 50/60 Hz, 50 watts at zero signal output, 380 watts at rated output MECHANICAL INFORMATION SIZE Front panel me

9、asures 16 inches wide (40.64 cm) by 5 7/16 inches high (13.81 cm). Chassis measures 15 inches wide (38.1 cm) by 13 inches deep (33.02 cm), including Panloc shelf and back panel con- nectors. Knob clearance required is 1 (3.81 cm) in front of mounting panel WEIGHT 34 pounds (15.42 kg) net, 46 pounds

10、(20.87 kg) in shipping carton RadioFans.CN 收音机爱 好者资料库 MA6100 BLOCK DIAGRAM RadioFans.CN 收音机爱 好者资料库 TONE Capacitance 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

11、are outlined on the schematics by dotted l i n e s . The c i r c l e d numbers around the dotted l i n e s correspond to 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 .

12、A l l voltages indicated on the schematics are measured under the fol1ow ing conditions: 6. In units with Serial Nos below AE1453; C415 C I 1 7 and C118 are 12pF. 9. In units with Serial Nos below AE2075; R309 is D308. (Mclntosh Part No. 070-064) 10. In units with Serial Nos below AE2122; R211 R421

13、, R422, R423 R425, R426, R427, D 4 1 7 , D418, D419 R437 and R438 are used and D4I5 and 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 a

14、t: Volume F u l 1 y CW Tape mon. out Input selector Aux Tape copy out Mode selector Stereo F i l t e r s out Balance control Zero Phase out Como Flat Speakers out Tone controls Flat RadioFans.CN 收音机爱 好者资料库 MA 6100 REPLACEMENT PARTS A l l parts not listed are common items obtain- able from radio part

15、s jobbers. Replacement parts may be obtained when ordered by PART NUMBER from: Mclntosh Laboratory, Inc. C us tomer Service Department 2 Chambers Street Binghamton, New York 13903 ( telephone 607-723-3512) Symbol Number C101 , 102 C105, 106 C107,108 C 1 1 1 , 112 C113, 114 C 1 1 5 , 1 1 6 C119, 120

16、C123, 124 C 1 2 5 , 1 2 6 C 1 2 7 , 128 C129, 130 C I 3 1 ,132 C 1 3 7 , 1 3 8 C201 ,202 C209.210 C 2 1 2 ,213 C301 C302 C303 C305 C306 C307 C312 C 3 1 3 , 3 1 4 C 3 1 7 C401 ,402 C403,404 C419,420 C427,428 D301 ,302 D303,304 D305,306 D307 CAPACITORS Description Mylar . 47F Ta. Elect 10F Ta. Elect 1

17、0F Mylar . 4F Ta. Elect- 100F Mylar . 1 F Mylar . 22 F Ta. Elect 100F Mylar .22F Mylar . 1 F Mylar .022F Mylar .01F Mylar .47F Mylar . 2 2 F Mylar .01F Mylar .022F Mylar . 47F Ta. Elect 10F Elect. 33F Mylar .22F Mylar 1F Elect. 100F 250V 63V 63V 250V 16V 250V 16V 250V 250V 250V 250V 250V 250V 250V 2

18、50V 63V 40V 250V 40V Elect . 80/150/150/200F 200/200/150/100V Elect. 9300F Elect. 220F Elect. 150F Elect. 470F Elect. 10F Ta. Elect 1 . 5 F DIODES S i . Rect i f i er S i . Rect i f ier S i . Rect i fier Zener 50V 100V 63V 4V 35V 20V 75V Part Number 064-069 066-221 066-178 064-069 066-226 064-067 06

19、4-068 066-226 064-068 064-067 064-102 064-040 064-069 064-068 064-040 064-102 064-069 066-221 066-204 064-096 064-088 066-206 066-191 066-162 066-201 066-?05 066-136 066-173 066-158 070-041 070-041 070-031 070-025 D417,418 D419,420 0308 D309 D401 ,402 D403,404 D405,406 D407,408 D409,410 D411 ,412 D

20、4 1 3 , 4 1 4 D 4 1 5 , 4 1 6 F401 ,402 F403,404 CB301 L401 ,402 Q101 , 102 Q 103, 104 Q105, 106 Q107, 108 QI09, 110 Q l 1 1 , 1 1 2 Q l 1 3 , 1 1 4 Q 1 1 5 , 1 1 6 Q301 Q302 Q303 Q401 ,402 Q403 ,404 Q405,406 Q407,408 Q409,410 Q411 ,412 Q413, 414 Q415,416 Q417 ,418 R20I R2IO R21 1 R 2 1 2 Si. Rectif

21、ier Si. Rectifier Si. Rectifier Zener 20V Si. Rectifier Si. Rectifier Si. Rectifier Si. Rectifier Si. Rectifier Si. Rectifier Ge. PNP Transistor Si. Rectifier FUSES Fuse 5A Fuse 5A Circu i t B reaker 4A CHOKES Choke 4H TRANSISTORS Si . PNP transi stor S i . PNP trans istor S i . NPN trans istor S i

22、. NPN trans i stor S i . NPN t rans i stor S i . NPN trans i stor S i . NPN transi stor S i . NPN t rans i s tor SI. NPN t rans i s tor S i . PNP trans i stor S i . NPN trans i stor S i . PNP trans i stor S i . PNP trans i stor S i . NPN t rans istor S i . NPN trans istor S i . PNP t rans i stor S i

23、 . NPN transistor Si . PNP transi stor S i . NPN t rans istor S i . NPN trans i stor POTENTIOMETERS Ba l ance con t ro l Vo 1 ume cont ro l Bass trim con t ro l Bass trim control 070-046 070-046 070-031 070-064 070-047 070-046 070-047 070-047 070-031 070-031 132-098 070-047 089-014 089-014 088-007 1

24、 2 2 - 1 0 5 132-096 132-096 132-095 132-093 132-093 132-093 132-095 132-095 132-094 132-096 132-078 132-056 132-056 132-081 132-021 132-032 132-080 132-079 132-128 1 3 2 - 1 2 8 134-240 134-239 134-354 134-254 RadioFans.CN 收音机爱 好者资料库 R215 R2I6 R227 R228 R3I3 R314 R401 ,402 R433,434 R435,436 SI S2 S

25、3 T30I SBS401 ,402 TR401 ,402 POTENTIOMETERS Treble control Bass control Treble trim control Treble trim control RESISTORS Wirewound 600 5W Wirewound 1 . 5K 5W Wirewound 3 . 6K 1 0W Wirewound . 33 5W Wirewound .33 5W SWITCHES Input selector switch Pushbutton switch Mode selector switch TRANSFORMERS

26、Power t rans former THYRISTORS & TRIGGERS Bilateral switch Triac FRONT PANEL & TRIM Front panel F ron t pane l end caps Balance control knob Comp cont ro l knob Bass knob ( f ron t ) Bass knob ( rea r ) Treble knob (front) Treb le knob ( rear ) Vo l u me con t ro l knob Mode selector knob Input sele

27、ctor knob LAMPS Pane l i l l urn i na t i on # 1 866 Switch indicator #51 MOUNTING SYSTEM She l f bracket (right) Shelf bracket (left) Mount i ng temp l a te # 1 00 Hardwa re package MISCELLANEOUS ITEMS Plastic feet Sh i pp i ng ca r ton Owners manua l L i ne cord 134-238 134-237 134-253 134-253 139

28、-043 139-079 139-047 139-080 139-080 146-153 150-01 1 146-134 044-418 131 -004 131-005 044-423 018-154 044-375 090-100 044-375 090-100 044-375 090- 100 044-372 044-372 044-372 058-014 058-021 043-622 043-623 038-179 043-608 01 7-156 044-510 038-61 1 170-021 MA 6100 SCHEMATIC PART NO. 038-810 BE04200420C1025S7-M4810 RadioFans.CN 收音机爱 好者资料库