McIntosh-MA5100-pwr-sm维修电路原理图.pdf

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1、MA 5100 PREAMP - AMPLIFIER SERVICE INFORMATION S T A R T I N G W I T H S E R I A L N O . 21HOO MclNTOSH LABORATORY INC. 2 CHAMBERS STREET BINGHAMTON, NEW YORK MA 5100 RadioFans.CN 收音机爱 好者资料库 MA 5100 ELECTRICAL SPECIFICATIONS Power Output: 90 watts RMS continuous, 45 watts per channel operating simul

2、taneously into 4 ohm or 8 ohm loads. 60 watts RMS continuous, 30 watts per channel operating simultaneously into 16 ohm loads. Harmonic Distortion: Less than 0.25% at rated power output from 20Hz to 20,000Hz with both chan- nels operating. Intermodulation Distortion: Less than 0.25% for any combinat

3、ion of frequencies from 2QHz to 20,000Hz if instantaneous peak power is 90 watts per channel or less into 4 or 8 ohm loads and 60 watts per channel or less into 16 ohm loads with both channels operating. Frequency Range: At rated output both channels: 0.5dB 20Hz through 20,000Hz. Output Impedance: 4

4、 ohm, 8 ohm, 16 ohm. No impedance switching required. Internal Impedance/Damping: Less than .04 ohms; damping factor greater than 100. Input Sensitivity And Impedance: Auxiliary, Tape, Tuner, and Tape Monitor: 300mV, 250K ohms. Phono 1 and Phono 2: 2mV, 47,000 ohms. Tape Head: 2mV, 1/2 megohm. Hum A

5、nd Noise: High Level Inputs: 75dB below rated output. Low Level Inputs: 70dB below 10mV input. Power Amplifier: 90dB below rated output. Tape Output: 300mV at rated sensitivity, 1.4 volts with 10mV at phono input. Left Plus Right Output: Adjustable 0 to 6 volts from generator impedance of less than

6、5,000 ohms. Bass Controls: +18dB at 20Hz. Treble Controls: +l8dB at 20,000Hz. HF Filter: Flat, or 5,000Hz cutoff. LP Filter: Plat, or 50Hz cutoff. Power Requirements; 117 volts AC, 50-60Hz, 70 watts at zero signal output, 200 watts at rated output. RadioFans.CN 收音机爱 好者资料库 MA 5100 BLOCK DIAGRAM MA 51

7、00 RadioFans.CN 收音机爱 好者资料库 MA 5100 PREAMP. SECTION PRINTED CIRCUIT BOARD 043-989 RadioFans.CN 收音机爱 好者资料库 PREAMP. SECTION MA 5100 154-411 HEAVY LINE SHOWS PRIMARY SIGNAL PATH RadioFans.CN 收音机爱 好者资料库 POWER OUTPUT SECTION MA 5100 154-376 HEAVY LINE SHOWS PRIMARY SIGNAL PATH RadioFans.CN 收音机爱 好者资料库 MA 5

8、100 OUTPUT MONITOR PRINTED CIRCUIT BOARD 043-821 ( NOTE 1 ) LEFT CHANNEL POWER OUTPUT SECTION PRINTED CIRCUIT BOARD 043-919 RIGHT CHANNEL POWER OUTPUT SECTION PRINTED CIRCUIT BOARD 043-919 RadioFans.CN 收音机爱 好者资料库 FILTER SECTION MA5100 154-410 FILTER SECTION PRINTED CIRCUIT BOARD 043-990 MA 5100 FILT

9、ER SECTION PRINTED CIRCUIT BOARD 043-990 RadioFans.CN 收音机爱 好者资料库 SCHEMATIC NOTES MA 5100 Unless otherwise specified: Resistance values are in ohms, 1/2 watt, and 10% tolerance; capacitance values smaller than 1 are in microfarads (mfd); capacitance values greater than 1 are in picofarads (pF) ; indu

10、ctors are in microhenries (H). Printed circuit board components are outlined on the schematics by dotted lines. The circled numbers on the dotted lines correspond to the numbers of the PC board layouts. The heavy lines on the schematics denote the primary signal path. The terminal numbering of rotar

11、y switches is for reference only. All voltages indicated on the schematics are measured under the following condi- tions : a. Use of an 11 megohm input impedance VTVM, b. All voltages 10% with respect to chassis ground. c. No signal at input terminals, d. AC input at 117 volts AC, 50/60Hz. e. Front

12、panel controls at: Input Selector Mode Selector AUX STEREO Volume Power MAX ON All other controls in normal position. 1. In units with serial numbers below 46H01, the output monitor PC board is not used. 2. In units with serial numbers below 44H50: R256 R254 transistors Q205 the emitter of Q2l5 C221

13、 C227, C228, C229, C230, C231, and C232 are used; R229 C201 R233 C211, C212, C213, and C2114 are .01F. 10. In units with serial numbers below 23H7S: D211, D212, D213, and D214 are not used. 11. In units with serial numbers below 22H00: R227 & R228 were 1K, 1 0 % , 1W, 12. In units with serial Nos be

14、low 54H60: R254 and R255 are 18 and F201, F202, F203j and F204 are 3A fuses. (Part Ho. 089019) LOCATION OF TRANSISTORS NOT ON PRINTED CIRCUIT BOARDS RadioFans.CN 收音机爱 好者资料库 POWER SUPPLY SECTION MA 5100 154-331 MA 5100 RadioFans.CN 收音机爱 好者资料库 REPLACEMENT PARTS A l l parts not listed are common items

15、obtain- able from radio parts jobbers. Replacement parts may be obtained when ordered by PART NUMBER from: Mclntosh Laboratory, Inc. Customer Service Department 2 Chambers Street Binghamton, New York 13903 (telephone 607-723-3512) Symbol Number C1 ,2 C7,8 C9 ,10 C11 , 12 C 1 3 , 14 C15, 16 C17, 18 C

16、19,20 C21 ,22 C23,24 C101 , 102 C103, 104 C107, 108 C11 1 C1 12, 113 C203,204 C207,208 C21 1 ,212 C213,214 C 2 2 3 , 2 2 4 C304 C305 C306 C307 C308 C309 D201 ,202 D203,204 D205,206 D207,208 D209,210 D21 1 ,212 D213,214 CAPACITORS Description Mylar .22F 250V Mylar .1F 250V Elect. 100F 12V Mylar .1F 2

17、50V Mylar .1F 250V Mylar .47F 75V Mylar .47F 250V Elect. 100F 12V Mylar .47F 250V Mylar .22F 200V Mylar . 1 F 250V Mylar .01F 250V Mylar .22F 250V Ta. Elect. 1F 35V Ta. Elect. 1.5F 35V Elect. 100F 12V Elect. 180F 3V Mylar .047F 250V Mylar .047F 250V Elect. 10F 25V Part Number 064-043 064-037 066-127

18、 064-037 064-037 064-039 064-045 066-127 064-045 064-087 064-038 064-040 064-043 066-091 066-092 066-127 066-111 064-044 064-044 066-005 Elect. 80/80/150/50F 066-103 200/200/150/150V Elect. 200/500F 100/50V Elect. 200/500F -100/-75V Elect. 100F 12V Elect. 9300F 45V Elect. 9300F 45V DIODES S i . refe

19、rence diode Si. rectifier Si. rectifier S i . signal diode Si. signal diode Si. rectifier S i . rectifier 066-099 066-093 066-127 066-106 066-106 070-040 070-030 070-030 070-022 070-022 070-031 070-031 D301 D302 D303 D304 D305 D306 D307 D308 D309 F201 ,202 F203,204 F301 L201 ,202 Q1,2 Q3,4 Q5,6 Q7,8

20、 Q9, 10 Q11,12 Q101 , 102 Q103, 104 Q201 ,202 Q203,204 Q207,208 Q209,210 Q 2 1 1 ,212 Q 2 1 1 ,212 Q213,214 Q215,216 Q217,218 Q219,220 R53 R58 R63 R63 R64 R64 R247 Si. rectifier Si. rectifier Si. rectifier Si. rectifier Si. rectifier Si. rectifier Si. rectifier Si. rectifier S i . rectifier FUSES Fu

21、se 4A (SFE-4) Fuse 4A (SFE-4) Fuse 2.5A Slo-Blo CHOKES Choke 2H TRANSISTORS Si. NPN transistor Si. NPN transistor Si. NPN transistor Si. NPN transistor Si. NPN transistor Si. NPN transistor Si. NPN transistor Si. PNP transistor Si. PNP transistor Si. PNP transistor Si. NPN transistor Si. PNP transis

22、tor Si. NPN transistor (for units above 22H60) S i . NPN transistor (for units below 22H60) Si. NPN transistor Si. PNP transistor Si. NPN transistor Si. NPN transistor POTENTIOMETERS Balance control Volume Control Bass control (w/flat shaft) Bass control (w/knurled shaft) Treble control (w/flat shaf

23、t) Treble control (w/knurled shaft) L & R adjust 070-031 070-031 070-031 070-031 070-041 070-041 070-041 070-041 070-030 089-021 089-021 089-015 122-064 132-041 132-041 132-051 132-041 132-057 132-051 132-057 132-029 132-029 132-029 132-021 132-032 132-515 132-022 132-521 132-527 132-533 132-533 134

24、-035 134-033 134-172 134-162 134-173 134-163 134-063 MA 5100 RadioFans.CN 收音机爱 好者资料库 MA 5100 SCHEMATIC PART NO. 038-376BE042004 MA 5100 R231 ,232 R237,238 R239,240 R250,251 R301 R302,303 R307 R308 R311 R312 R313 S1 S2 S3 S4 S5 S101 S102 S103 S201 S301 S302 S303 T301 TR201 ,202 SB201 ,202 RESISTORS W

25、irewound 3 . 6k 5W Wirewound .33 ohms 5W Wirewound .47 ohms 5W Wirewound 200 ohms 5W Wirewound 100 ohms 5W Wirewound 220 ohms 5W Wirewound 100 ohms 5W Wirewound 220 ohms 5W Wirewound 7.5 ohms 5W Wirewound 500 ohms 5W Wirewound 220 Ohms 5W SWITCHES Input selector switch Compensation switch Tape monit

26、or switch Mode selector switch Loudness switch L F switch HF switch Phase switch Speaker switch Power switch Thermal cut out Thermal cut out TRANSFORMERS Power transformer THYRISTORS & TRIGGERS Triac Bilateral switch MODULES Tone Control module Compensation module FRONT PANEL & TRIM Front panel Fron

27、t panel end cap right) Front panel end cap (left) Volume control knob Balance control knob Input control knob Mode selector knob Treble knob (rear) Treble knob (front) - for flat shaft 139-013 139-036 139-050 139-009 139-008 139-009 139-008 139-009 139-010 139-011 139-009 146-035 148-019 148-012 146

28、-105 148-019 148-019 148-019 148-019 148-012 148-005 153-007 153-007 043-551 131-001 131-002 130-007 130-026 043-725 018-043 018-044 043-253 043-253 043-253 043-253 090-009 043-625 Treble knob (front) - for knurled shaft Bass knob (rear) Bass knob (front) - for flat shaft Bass knob (front) - for knu

29、rled shaft LAMPS Panel illumination #1864 Switch indicator #334 MOUNTING SYSTEM Shelf bracket right) Shelf bracket (left) Mounting template #100 Hardware package MISCELLANEOUS ITEMS Plastic feet Shipping carton Owners manual Line cord Shorting plug Fuseholder 15C1114S6-M9376 090-008 090-009 043-625 090-008 058-028 058-003 043-234 043-235 038-179 043-557 017-041 043-727 038-129 170-021 127-001 178-001 RadioFans.CN 收音机爱 好者资料库