McIntosh-MA6300-int-sm维修电路原理图.pdf

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1、SERVICE MANUAL Performance Specifications . 2 Notes . 3 Rear Panel . 4 Section Location . 4 Block Diagram . 5 - 6 Interconnection Diagram . 7 - 8 Main Schematic and PCB . 9 - 16 Preamp Schematic and PCB. 17 - 20 Heatsink Schematic and PCB . 21 - 28 Display Schematic and PCB . 29 - 32 Push Button Sch

2、ematic and PCB . 33 - 34 Meter Schematic and PCB . 35 - 36 Parts List . 37 - 42 Repacking Instruction . 43 CONTENTS INTEGRATED AMPLIFIER SERIAL NO. WR1001 And Above RadioFans.CN 收音机爱好者资料库 PERFORMANCE SPECIFICATIONS 2 Power Output 100 watts into an 8 ohm load is the minimum sine wave continuous aver

3、age power output. The output RMS voltage is 28.3V across 8 ohms 160 watts into a 4 ohm load is the minimum sine wave continuo us average power output. The output RMS voltage is 25.3V across 4 ohms Output Load Impedance 8 and 4 ohms Rated Power Band 20Hz to 20,000Hz Total Harmonic Distortion 0.005% m

4、aximum harmonic distortion at any power level from 250 milliwatts to rated power, 20Hz to 20,000Hz Dynamic Headroom 1.4dB Frequency Response +0, -0.5dB from 20Hz to 20,000Hz +0, -3dB from 10Hz to 100,000Hz Preamplifier Main Output 1V for rated input (8V Maximun) Sensitivity (for rated output) High L

5、evel, 250mV unbalanced, 500mV balanced Phono, 2.5mV Power Amp In, 1V Signal To Noise Ratio (A-Weighted) High Level, 97dB below rated output Phono, 90dB below 10mV input Power Amplifier, 110 below rated output Intermodulation Distortion 0.005% maximum, if the instantaneous peak power output is rated

6、power or less per channel with both channels operating for any combination of frequencies from 20Hz to 20,000Hz. Wide Band Damping Factor 200 at 8 ohms 100 at 4 ohms Input Impedance High Level, 20K ohms Phono, 47K ohms; 65pF Power Amp In, 10K ohms Maximum Input Signal High Level, 8V Phono, 90mV Powe

7、r Amplifier In, 8V Main Output Impedance 50 ohms Power Guard Less than 2% THD with up to 16dB overdrive at 1,000Hz Voltage Gain High Level to Tape Output: 0dB High Level to Main Output: 12dB Phono to Main Output: 52dB Power Requirements 100 Volts, 50/60Hz at 3.6 amps 110 Volts, 50/60Hz at 3.6 amps 1

8、20 Volts, 50/60Hz at 3.2 amps 220 Volts, 50/60Hz at 1.8 amps 230 Volts, 50/60Hz at 1.8 amps 240 Volts, 50/60Hz at 1.8 amps Note: Refer to the rear panel of the MA6300 for the correct voltage. Overall Dimensions Width is 17-1/2 inches (44.45cm) Height is 7-5/8 inches (19.37cm) including feet Depth is

9、 22 inches (55.88cm) including the Front Panel, Knobs and Cables Weight 37 pounds (16.8 kg) net, 55 pounds (24.9 kg) in shipping carton Shipping Carton Dimensions Width is 25 inches (63.5cm) Depth is 27 inches (68.6cm) Height is 12 inches (30.5cm) RadioFans.CN 收音机爱好者资料库 3 MA6300 NOTES RadioFans.CN

10、收音机爱好者资料库 4 MA6300 REAR PANEL SECTION LOCATIONS TOP VIEW WITH COVER REMOVED RadioFans.CN 收音机爱好者资料库 INTEGRATED AMPLIFIER MA6300 BLOCK DIAGRAM 56 RadioFans.CN 收音机爱好者资料库 78 INTERCONNECT RadioFans.CN 收音机爱好者资料库 INTEGRATED AMPLIFIER MA6300 910 2MAIN 050276 SCH 1 OF 3 RadioFans.CN 收音机爱好者资料库 1112 2MAIN

11、 050276 SCH 2 OF 3 RadioFans.CN 收音机爱好者资料库 INTEGRATED AMPLIFIER MA6300 1314 2MAIN 050276 SCH 3 OF 3 RadioFans.CN 收音机爱好者资料库 1516 2MAIN 050276 PCB RadioFans.CN 收音机爱好者资料库 INTEGRATED AMPLIFIER MA6300 1718 3PREAMP 050279 SCH RadioFans.CN 收音机爱好者资料库 1920 3PREAMP 050279 PCB RadioFans.CN 收音机爱好者资料库 INTEGR

12、ATED AMPLIFIER MA6300 2122 4HEATSINK 050280 SCH 1 OF 3 RadioFans.CN 收音机爱好者资料库 2324 4HEATSINK 050280 SCH 2 OF 3 RadioFans.CN 收音机爱好者资料库 INTEGRATED AMPLIFIER MA6300 2526 4HEATSINK 050280 SCH 3 OF 3 RadioFans.CN 收音机爱好者资料库 2728 4HEATSINK 050280 PCB RadioFans.CN 收音机爱好者资料库 INTEGRATED AMPLIFIER MA6300 2

13、930 5DISPLAY 050277 SCH 1 of 2 RadioFans.CN 收音机爱好者资料库 3132 5DISPLAY 050277 SCH 2 of 2 and PCB RadioFans.CN 收音机爱好者资料库 INTEGRATED AMPLIFIER MA6300 3334 6PUSH BUTTON 050278 SCH and PCB RadioFans.CN 收音机爱好者资料库 3536 7METER 050351 SCH and PCB RadioFans.CN 收音机爱好者资料库 MA6300 37 PARTS LIST MAIN PCB 050276

14、Ref No. DescriptionPart No. 2 Ref No. DescriptionPart No. C1CAP POLYPROP 0.15UF 10% 250VDC064363 C2CAP MPF 0.1UF 5% 63VDC064325 C3CAP MONO .1UF 50V 20% Z5U061346 C4CAP ELECT 3300UF 35V066509 C5CAP ELECT 22000UF 63V066557 C6CAP ELECT 3300UF 35V066509 C7CAP ELECT 22000UF 63V066557 C8CAP ELECT 3300UF 3

15、5V066509 C9CAP ELECT 3300UF 35V066509 C10CAP ELECT 3300UF 35V066509 C11CAP ELECT 1000UF 25V066513 C12CAP ELECT 1000UF 25V066513 C13CAP ELECT 220UF 25V066507 C14CAP MONO .1UF 50V 20% Z5U061346 C15CAP MONO .1UF 50V 20% Z5U061346 C16CAP MONO .1UF 50V 20% Z5U061346 C17CAP ELECT 47UF 35V066446 C18CAP MON

16、O .1UF 50V 20% Z5U061346 C19CAP ELECT 10UF 50V066445 C20CAP ELECT 10UF 50V066445 C21CAP MONO 220PF 200V 10% NPO061342 C22CAP MONO .1UF 50V 20% Z5U061346 C23CAP MONO .1UF 50V 20% Z5U061346 C24CAP MONO .1UF 50V 20% Z5U061346 C25CAP MONO .1UF 50V 20% Z5U061346 C28CAP ELECT 10UF 16V066580 C29CAP ELECT 1

17、0UF 16V066580 C30CAP ELECT 10UF 16V066580 C31CAP ELECT 10UF 16V066580 C32CAP ELECT 10UF 16V066580 C33CAP ELECT 10UF 16V066580 C34CAP ELECT 10UF 16V066580 C35CAP ELECT 10UF 16V066580 C36CAP ELECT 10UF 16V066580 C37CAP ELECT 10UF 16V066580 C38CAP ELECT 10UF 16V066580 C39CAP ELECT 10UF 16V066580 C40CAP

18、 ELECT 10UF 16V066580 C41CAP ELECT 10UF 16V066580 C42CAP ELECT 10UF 16V066580 C43CAP ELECT 10UF 16V066580 C44CAP ELECT 10UF 16V066580 C45CAP ELECT 10UF 16V066580 C46CAP ELECT 10UF 16V066580 C47CAP MONO 100PF 100V 10% NPO061341 C48CAP MONO 47PF 200V 10% NPO061340 C49CAP ELECT 10UF 16V066580 C50CAP EL

19、ECT 10UF 16V066580 C51CAP ELECT 10UF 16V066580 C52CAP ELECT 10UF 16V066580 C53CAP MONO 100PF 100V 10% NPO061341 C54CAP MONO 100PF 100V 10% NPO061341 C55CAP MONO 100PF 100V 10% NPO061341 C56CAP MONO 100PF 100V 10% NPO061341 C57CAP ELECT 47UF 35V066446 C58CAP MONO 100PF 100V 10% NPO061341 C59CAP MONO

20、100PF 100V 10% NPO061341 C60CAP ELECT 10UF 16V066580 C61CAP ELECT 470UF 16V066508 C62CAP ELECT 470UF 16V066508 C63CAP MONO 100PF 100V 10% NPO061341 C64CAP MONO 47PF 200V 10% NPO061340 C65CAP MONO 100PF 100V 10% NPO061341 C66CAP MONO 47PF 200V 10% NPO061340 C67CAP MONO 100PF 100V 10% NPO061341 C68CAP

21、 MONO 47PF 200V 10% NPO061340 C69CAP MPF 0.01UF 5% 63VDC064312 C70CAP MPF 0.01UF 5% 63VDC064312 C71CAP MPF 0.033UF 5% 63VDC064318 C72CAP MPF 0.033UF 5% 63VDC064318 C73CAP ELECT 47UF 35V066446 C74CAP MONO .1UF 50V 20% Z5U061346 C75CAP MONO .1UF 50V 20% Z5U061346 D1DIODE RECTIFIER070175 D2DIODE SILICO

22、N070174 D3DIODE SILICON070174 D4DIODE SILICON070174 D5DIODE SIL 400 PIV 1.5A070031 D6DIODE SIL 400 PIV 1.5A070031 D7DIODE SIL 400 PIV 1.5A070031 D8DIODE SIL 400 PIV 1.5A070031 D9RECTIFIER BRIDGE PCB 35A 600V070187 D10DIODE SIL 400 PIV 1.5A070031 D11DIODE SIL 400 PIV 1.5A070031 D12DIODE SIL 400 PIV 1

23、.5A070031 D13DIODE SIL 400 PIV 1.5A070031 D14DIODE SILICON070174 D15DIODE SILICON070174 D16DIODE SILICON070174 GP4BRACKET PCB CARD MOUNTING003611 (GP4)RIVET 1/8X3/16 STEEL108011 GP5BRACKET PCB CARD MOUNTING003611 (GP5)RIVET 1/8X3/16 STEEL108011 HS1HEATSINK T0220080021 (HS1)SCREW MACH 4-40X1/4 PAN PH

24、 BLK400121 (HS1)NUT KEP 4-40 CLR402001 (HS1)INSULATOR ISOSTRATE TO 220084133 HS2HEATSINK T0220080021 (HS2)SCREW MACH 4-40X1/4 PAN PH BLK400121 (HS2)NUT KEP 4-40 CLR402001 (HS2)INSULATOR ISOSTRATE TO 220084133 HS3HEATSINK T0220080021 (HS3)SCREW MACH 4-40X1/4 PAN PH BLK400121 (HS3)NUT KEP 4-40 CLR4020

25、01 (HS3)INSULATOR ISOSTRATE TO 220084133 J1BLADE FASTON W/FEET117708 J2BLADE FASTON W/FEET117708 J3BLADE FASTON W/FEET117708 J4BLADE FASTON W/FEET117708 J5BLADE FASTON W/FEET117708 J6BLADE FASTON W/FEET117708 J7BLADE FASTON W/FEET117708 J8CONN 2 PIN MALE117213 J9CONN 3 POS MALE LARGE FRCTN LK117293

26、J10CONN 23 PIN FFC117906 J11JACK HEADPHONE DUAL BLACK 1/8”117549 J12JACK HEADPHONE DUAL BLACK 1/8”117549 J13JACK HEADPHONE DUAL BLACK 1/8”117549 J14JACK HEADPHONE DUAL BLACK 1/8”117549 J15CONN 12 PIN FFC117907 RadioFans.CN 收音机爱好者资料库 38 PARTS LIST contd. MAIN PCB 050276 (Contd.) Ref No. DescriptionP

27、art No. Ref No. DescriptionPart No. J16JACK RCA 4X2 WHT/RED 14MM117791 J17JACK RCA 4X2 WHT/RED 14MM117791 J18CONN XLR FEM HORIZ PCB LATCH117814 J19CONN XLR FEM HORIZ PCB LATCH117814 J20JACK RCA 1X2 WHT/RED 14MM117788 K1RELAY 12VDC 5A 250VAC TV-4087077 K2RELAY REED SPST-NO 5V 1.2A087078 K3RELAY REED

28、SPST-NO 5V 1.2A087078 K4RELAY REED SPST-NO 5V 1.2A087078 K5RELAY REED SPST-NO 5V 1.2A087078 K6RELAY REED SPST-NO 5V 1.2A087078 K7RELAY REED SPST-NO 5V 1.2A087078 K8RELAY REED SPST-NO 5V 1.2A087078 K9RELAY REED SPST-NO 5V 1.2A087078 K10RELAY REED SPST-NO 5V 1.2A087078 K11RELAY REED SPST-NO 5V 1.2A087

29、078 K12RELAY REED SPST-NO 5V 1.2A087078 K13RELAY REED SPST-NO 5V 1.2A087078 K14RELAY REED SPST-NO 5V 1.2A087078 K15RELAY REED SPST-NO 5V 1.2A087078 K16RELAY REED SPST-NO 5V 1.2A087078 K17RELAY REED SPST-NO 5V 1.2A087078 K18RELAY REED SPST-NO 5V 1.2A087078 K19RELAY REED SPST-NO 5V 1.2A087078 PCB1PC B

30、D MAIN129655 Q1TRANSISTOR PNP SILICON132304 Q2TRANSISTOR NPN SILICON132317 Q3TRANSISTOR PNP SILICON132304 Q4TRANSISTOR NPN SILICON132317 R1RES POLYSWITCH RXE110144671 R2RES POLYSWITCH RXE110144671 R3RES MF 2.21 OHM 1% 1/4W144607 R4RES MF 22.1K OHM 1% 1/4W144564 R5RES MF 100K 1% 1/4W144528 R6RES MF 4

31、7.5K 1% 1/4W144526 R7RES MF 47.5K 1% 1/4W144526 R8RES MF 47.5K 1% 1/4W144526 R9RES NETWORK 9X-1-223144498 R10RES MF 10K 1% 1/4W144504 R11RES MF 10 OHM 1% 1/4W144553 R12RES MF 100 OHM 1% 1/4W144568 R13RES MF 475K 1% 1/4W144604 R14RES NETWORK 9X-1-223144498 R15RES MF 2.21 OHM 1% 1/4W144607 R16RES MF 1

32、K 1% 1/4W144513 R17RES MF 100K 1% 1/4W144528 R18RES MF 3.32K 1% 1/4W144518 R19RES MF 182 OHM 1% 1/4W144579 R20RES MF 182 OHM 1% 1/4W144579 R21RES MF 182 OHM 1% 1/4W144579 R22RES MF 100 OHM 1% 1/4W144568 R23RES MF 100 OHM 1% 1/4W144568 R24RES MF 100 OHM 1% 1/4W144568 R25RES MF 100 OHM 1% 1/4W144568 R

33、26RES MF 100 OHM 1% 1/4W144568 R27RES MF 100 OHM 1% 1/4W144568 R28RES MF 100 OHM 1% 1/4W144568 R29RES MET OX 47 OHM 5% 1/2W137102 R30RES MF 10K 1% 1/4W144504 R31RES MF 10K 1% 1/4W144504 R33RES MF 221 OHM 1% 1/4W144559 R34RES NETWORK 2X220K ISO144678 R35RES MF 221 OHM 1% 1/4W144559 R36RES NETWORK 2X2

34、20K ISO144678 R37RES NETWORK 2X220K ISO144678 R38RES NETWORK 2X220K ISO144678 R39RES NETWORK 2X220K ISO144678 R40RES NETWORK 2X220K ISO144678 R41RES NET 2 X 22K ISOLATED144689 R42RES NET 2 X 22K ISOLATED144689 R43RES MF 22.1K OHM 1% 1/4W144564 R44RES MF 1K 1% 1/4W144513 R45RES NETWORK 2X220K ISO1446

35、78 R46RES MF 1K 1% 1/4W144513 R47RES MF 1K 1% 1/4W144513 R48RES MF 20K 1% 1/4W144524 R49RES MF 20K 1% 1/4W144524 R50RES MF 20K 1% 1/4W144524 R51RES MF 20K 1% 1/4W144524 R52RES MF 10K 1% 1/4W144504 R53RES MF 10K 1% 1/4W144504 R54RES MF 10K 1% 1/4W144504 R55RES MF 10K 1% 1/4W144504 R56RES MF 22.1 OHM

36、1% 1/4W144554 R57RES MF 22.1K OHM 1% 1/4W144564 R58RES NETWORK 2X220K ISO144678 R59RES MF 95.3 OHM 1% 1/4W144572 R60RES MF 95.3 OHM 1% 1/4W144572 R61RES MF 1K 1% 1/4W144513 R62RES MF 47.5K 1% 1/4W144526 R63RES MF 47.5K 1% 1/4W144526 R64RES MF 7.5K OHM 0.5% 1/4W144605 R65RES MF 7.5K OHM 0.5% 1/4W1446

37、05 R66RES MF 89.8K 0.5% 1/4W144606 R67RES MF 89.8K 0.5% 1/4W144606 R68RES MF 47.5 OHM 1% 1/4W144642 R69RES MF 2.21 OHM 1% 1/4W144607 R70RES MF 47.5 OHM 1% 1/4W144642 R71RES MF 2.21 OHM 1% 1/4W144607 R72RES MF 22.1 OHM 1% 1/4W144554 U1IC REGULATOR 15V133589 U2IC REGULATOR -15V133588 U3IC REGULATOR 5V

38、 1.5A LOW DROP133610 U4IC NAND 2 INPUT X 4133575 U5IC PROGRAMMED V1.00 MA6300133563 (U5)SOCKET IC 40-PIN178133 U6IC MICRO RESET POS133241 U7IC AND 2 INPUT X 4133577 U8IC SHFT REG SER-PAR133594 U9IC SHFT REG SER-PAR133594 U10IC SHFT REG SER-PAR133594 U11IC OCTAL DAR TRNS ARRY W/DIODE133624 U12IC 8 LN

39、 DRIVER ARRAY133180 U13IC DUAL OPERATIONAL AMPLIFIER133578 U14IC DUAL OPERATIONAL AMPLIFIER133578 U15IC OPERATIONAL AMP LOW NOISE133565 U16IC OPERATIONAL AMP LOW NOISE133565 Y1CERAMIC RESONATOR 12MHZ180059 RadioFans.CN 收音机爱好者资料库 MA6300 39 PARTS LIST contd. PREAMP PCB 050279 Ref No. DescriptionPart

40、No. Ref No. DescriptionPart No. C1CAP ELECT 220UF 25V066507 C2CAP ELECT 47UF 25V 20% BP066556 C3CAP MPF 0.22UF 5% 63VDC064329 C4CAP MPF 0.22UF 5% 63VDC064329 C5CAP MONO 100PF 100V 10% NPO061341 C6CAP MONO 100PF 100V 10% NPO061341 C7CAP MONO 100PF 100V 10% NPO061341 C8CAP MONO 100PF 100V 10% NPO06134

41、1 C9CAP MONO .1UF 50V 20% Z5U061346 C10CAP MONO 100PF 100V 10% NPO061341 C11CAP MONO 100PF 100V 10% NPO061341 C12CAP MONO .1UF 50V 20% Z5U061346 C13CAP ELECT 47UF 35V066446 C14CAP ELECT 47UF 35V066446 C15CAP MPF 0.22UF 5% 63VDC064329 C16CAP MPF 0.22UF 5% 63VDC064329 C17CAP MPF 0.22UF 5% 63VDC064329

42、C18CAP MPF 0.22UF 5% 63VDC064329 C19CAP MONO .1UF 50V 20% Z5U061346 C20CAP MONO .1UF 50V 20% Z5U061346 C21CAP ELECT 22UF 100V066574 C22CAP ELECT 22UF 100V066574 C23CAP ELECT 100UF 25V066447 C24CAP ELECT 100UF 25V066447 C25CAP MONO .1UF 50V 20% Z5U061346 C29CAP MONO 220PF 200V 10%061342 C30CAP MONO 2

43、20PF 200V 10%061342 C26CAP MONO .1UF 50V 20% Z5U061346 C27CAP ELECT 10UF 50V066445 C28CAP ELECT 10UF 50V066445 D1DIODE SILICON070174 J1CONN 12 PIN FFC117720 J2CONN 12 PIN FFC117720 J3CONN 12 PIN FFC117720 J4CONN 12 PIN FFC117720 J5CONN 12 PIN FFC117720 J6CONN 12 POS MALE RT ANGLE117816 K1RELAY REED

44、SPST-NO 5V 1.2A087078 PCB1PC BD PREAMP129607 R1RES MF 1.5K 1% 1/4W144539 R2RES MF 1.5K 1% 1/4W144539 R3RES MF 10 OHM 1% 1/4W144553 R4RES MF 10 OHM 1% 1/4W144553 R5RES MF 10 OHM 1% 1/4W144553 R6RES MF 4.75K 1% 1/4W144520 R7RES MF 4.75K 1% 1/4W144520 R8POT 50KAX2134490 R9RES MF 187K 1% 1/4W144621 R10R

45、ES MF 1K 1% 1/4W144513 R11RES MF 1K 1% 1/4W144513 R12RES MF 187K 1% 1/4W144621 R13RES MF 1.5K 1% 1/4W144539 R14RES MF 1.5K 1% 1/4W144539 R15RES MF 4.75K 1% 1/4W144520 R16RES MF 4.75K 1% 1/4W144520 R17POT BALANCE 2KOHM134464 R18RES MF 121K 1% 1/4W144626 R19RES MF 121K 1% 1/4W144626 R20RES MF 47.5K 1%

46、 1/4W144526 R21RES MF 47.5K 1% 1/4W144526 R22RES MF 33.2K 1% 1/4W144694 R23RES MF 33.2K 1% 1/4W144694 R24RES MF 47.5 OHM 1% 1/4W144642 R25RES MF 47.5 OHM 1% 1/4W144642 R26RES MF 221 OHM 1% 1/4W144559 R27RES MF 221 OHM 1% 1/4W144559 R28RES MF 4.99K 1% 1/4W144521 R29RES MF 4.99K 1% 1/4W144521 R30RES M

47、F 1K 1% 1/4W144513 R31RES MF 1K 1% 1/4W144513 R32RES MF 100 OHM 1% 1/4W144568 R33RES MF 100 OHM 1% 1/4W144568 U1IC DC MOTOR DRIVER133191 U2IC DUAL OPERATIONAL AMPLIFIER133260 U3IC DUAL OPERATIONAL AMPLIFIER133260 U4IC DUAL OPERATIONAL AMPLIFIER133260 HEATSINK PCB 050280 C1CAP ELECT 10UF 100VDC066462 C2CAP ELECT 10UF 100VDC066462 C3CAP MONO .1UF 50V 20% Z5U061346 C4CAP MONO .1UF 50V 20% Z5U061346 C5CAP ELECT 10UF 100VDC066462 C6CAP ELECT 10UF 50V066445 C7CAP ELECT 10UF 100VDC066462 C8CAP ELECT 100UF 25V066573 C9CAP ELECT 10UF 50V066445 C10CAP ELECT 10UF 50V066445