McIntosh-MC-501-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL Performance Specifications . 2 Notes . 2 Top and Rear Views . 3 Section Location . 4 Block Diagram . 5 - 6 Interconnection Diagram . 7 - 8 Driver/Heatsink Schematic and PCB . 9 - 13 Power Schematic and PCB . 15 - 16 Input Schematic and PCB . 17 - 18 Meter/Lighting Schematic and PCB. 1

2、9 - 20 Parts List . 21 - 24 Exploded View and Parts List . 25 - 28 Repacking Instructions . 29 CONTENTS POWER AMPLIFIER Serial Number WU1001 And Above SERIAL NO. WU1001 And Above RadioFans.CN 收音机爱 好者资料库 PERFORMANCE SPECIFICATIONS Power Output Minimum sine wave continuous average power output is: 500

3、 watts into 2 ohm load 500 watts into 4 ohm load 500 watts into 8 ohm load Rated Power Band 20Hz to 20,000Hz Total Harmonic Distortion Maximum Total Harmonic Distortion at any power level from 250 milliwatts to rated power output is: 0.005% for 2, 4 or 8 ohm load Dynamic Headroom 1.8dB Frequency Res

4、ponse +0, -0.25dB from 20Hz to 20,000Hz +0, -3dB from 10Hz to 100,000Hz Sensitivity 2.1 Volts Unbalanced Input 4.2 Volts Balanced Input A-Weighted Signal To Noise Ratio 97dB (124dB below rated output) Unbalanced and Balanced Intermodulation Distortion Maximum Intermodulation Distortion if instantane

5、ous peak output does not exceed twice the rated output, for any combination of frequencies from 20Hz to 20,000Hz is: 0.005% for 2, 4 or 8 ohm load Input Impedance 10,000 ohms Unbalanced Inputs 20,000 ohms Balanced Inputs Wide Band Damping Factor 100 8ohms Power Requirements 100 Volts, 50/60Hz at 8.0

6、 amps 110 Volts, 50/60Hz at 7.2 amps 120 Volts, 50/60Hz at 6.6 amps 220 Volts, 50/60Hz at 3.3 amps 230 Volts, 50/60Hz at 3.3 amps 240 Volts, 50/60Hz at 3.3 amps Note: Refer to the rear panel of the MC501 for the correct voltage. Overall Dimensions Front Panel: 17-1/2 inches (44.45cm) wide, 8-13/16 i

7、nches (22.38cm) high. Depth is 14-13/16 inches (37.62cm) including the Front Panel and Knobs Weight 91.5 pounds (41.6 kg) net, 105.5 pounds (48 kg) in shipping carton 2 1. The heavy notes on the schematic denote the primary signal path. 2. Unless otherwise noted, all voltages indicated on the schema

8、tics are measured under the following conditions: a. AC input at 120 volts, 50/60Hz. b. All voltages are +/-10% with respect to ground. A high impedance (10 megaohm) voltmeter must be used. 3. Unless otherwise specified: a. Resistor values are in ohms. b. Capacitor values are microfarads (uF). c. In

9、ductor values are in microhenries (uH). 4. On PC board drawings, Square pad indicates: a. Polarized Capacitors - Positive b. Diodes - Cathode c. Others - Pin 1 5. WARNING Parts marked with the symbol have critical characteristics. Use only replacement parts recom- mended by the manufacturer. NOTES R

10、adioFans.CN 收音机爱 好者资料库 3 MC501 TOP and REAR PANEL TOP VIEW REAR VIEW RadioFans.CN 收音机爱 好者资料库 4 SECTION LOCATIONS TOP VIEW WITH COVER REMOVED BOTTOM VIEW WITH COVER REMOVED 56 BLOCK DIAGRAM MC501 78 INTERCONNECT1 DRIVER/HEATSINK 749828 SCH 1 OF 22A MC501 910 2B DRIVER SECTION 1112 DRIVER/HEATSINK 749

11、828 SCH 2 OF 22A 2B HEATSINK SECTION 1314 MC501 DRIVER/HEATSINK 749828 PCB2A 2BNOTES 1516 POWER 749831 SCH AND PCB 3 1718 INPUT 749829 SCH AND PCB4 MC501 1920 METER/LIGHTING 749830 SCH AND PCB5 2122 MC501 PARTS LIST Ref. No.DescriptionPart No. 1 2B 2A 3 INTERCONNECT BP1BINDING POST, RED117937 BP2BIN

12、DING POST, BLK117938 BP3BINDING POST, RED117937 BP4BINDING POST, BLK117938 BP5BINDING POST, RED117937 BP6BINDING POST, BLK117938 DIDIODE, BRIDGE RECTIFIER070181 F1FUSE089134 J1RECEPTACLE, AC LINE117487 MT1METER124093 RT1THERMISTER ASSY052008 RT2THERMISTER ASSY052008 S1SWITCH146243 S2SWITCH146243 T1T

13、RANSFORMER, POWER749846 T2TRANSFORMER, OUTPUT749847 TB1TERMINAL BLOCK AC074091 DRIVER/HEATSINK PCB 749828 C1CAP DISC MONO .47UF 50V061320 C2CAP MONO .1UF 50V 20% Z5U061346 C3CAP MONO .1UF 50V 20% Z5U061346 C4CAP ELECT 47UF 35V066446 C5CAP ELECT 10UF 100VDC066462 C6CAP ELECT 10UF 100VDC066462 C7CAP M

14、ONO .1UF 50V 20% Z5U061346 C8CAP MONO .1UF 50V 20% Z5U061346 C9CAP MONO 220PF 200V 10% NPO061342 C10CAP MONO 100PF 100V 10% NPO061341 C11CAP MONO 100PF 100V 10% NPO061341 C13CAP MPF 0.0047UF 5% 63VDC064308 C14CAP POLYPROP 0.15UF 10% 250VDC064363 C15CAP POLYPROP .047UF 10% 250VDC064364 C16CAP ELECT 1

15、0UF 100VDC066462 C17CAP ELECT 10UF 100VDC066462 C18CAP MONO .01UF 50V 20% X7R061345 C19CAP ELECT 47UF 35V066446 C20CAP ELECT 47UF 35V066446 C21CAP MONO .01UF 50V 20% X7R061345 C22CAP MONO .1UF 50V 20% Z5U061346 C23CAP MONO 100PF 100V 10% NPO061341 C24CAP MONO 100PF 100V 10% NPO061341 C25CAP MONO .1U

16、F 50V 20% Z5U061346 C26CAP MPF 0.47UF 5% 100VDC064442 C27CAP MPF 0.47UF 5% 100VDC064442 C12CAP ELECT 220UF 25V066507 D1DIODE SILICON070174 D2DIODE SILICON070174 D3DIODE SILICON070174 D4DIODE SILICON070174 D5DIODE SILICON070174 D6DIODE 200V 3A070126 D7DIODE 200V 3A070126 J1CONN MALE 9 POS FRICTION LO

17、CK117244 J2CONN MALE 9 POS FRICTION LOCK117244 J3CONN HEADER 2 PIN 0.156117404 J4BLADE FASTON W/FEET117708 J5CONN 4 PIN117215 J6BLADE FASTON .110117712 J7BLADE FASTON W/FEET117708 J8CONN 2 PIN MALE117213 LD1LDR NETWORK144179 PC BD DRIVER/HEATSINK129657 Q1TRANSISTOR PNP SILICON132304 Q2TRANSISTOR NPN

18、 SILICON132317 Q3TRANSISTOR NPN SILICON132317 Q4TRANSISTOR N JFET132319 Q5TRANSISTOR N JFET132319 Q6TRANSISTOR N JFET132319 Q7TRANSISTOR PNP 120V132255 Q8TRANSISTOR PNP132254 Q9TRANSISTOR PNP 120V132255 Q10TRANSISTOR PNP SILICON132304 Q11TRANSISTOR PNP 120V132255 Q12TRANSISTOR PNP132254 Q13TRANSISTO

19、R NPN SILICON132317 Q14TRANSISTOR PNP132254 Q15TRANSISTOR NPN SILICON132317 Q16TRANSISTOR PNP SILICON132304 Q17TRANSISTOR NPN132325 Q18TRANSISTOR PNP132326 Q19TRANSISTOR NPN SILICON132317 Q20TRANSISTOR PNP SILICON132304 Q21TRANSISTOR NPN SILICON132317 Q22TRANSISTOR NPN132325 Q23TRANSISTOR PNP132326

20、Q24TRANSISTOR NPN132324 Q25TRANSISTOR PNP132323 Q26TRANSISTOR NPN POWER132328 Q27TRANSISTOR PNP POWER132329 Q28TRANSISTOR NPN POWER132328 Q29TRANSISTOR PNP POWER132329 Q30TRANSISTOR NPN POWER132328 Q31TRANSISTOR PNP POWER132329 Q32TRANSISTOR NPN POWER132328 Q33TRANSISTOR PNP POWER132329 Q34TRANSISTO

21、R NPN POWER132328 Q35TRANSISTOR PNP POWER132329 U1IC DUAL AMP133259 R1RES MF 10 OHM 1% 1/4W144553 R2RES MF 10 OHM 1% 1/4W144553 R3RES MF 4.75K 1% 1/4W144520 R4RES MF 100 OHM 1% 1/4W144568 R5RES MF 475 OHM 1% 1/4W144509 R6RES MF 22.1K 1% 1/4W144564 R7RES MF 10M 1% 1/4W144575 R8RES MF 267K 1% 1/4W1445

22、32 R9RES MF 2.21K 1% 1/4W144584 R10RES MF 221 OHM 1% 1/4W144559 R11RES MF 267K 1% 1/4W144532 R12RES MF 47.5K 1% 1/4W144526 R13RES MF 47.5K 1% 1/4W144526 R14RES MF 3.32K 1% 1/4W144518 R15RES MF 221 OHM 1% 1/4W144559 R16RES MF 1K 1% 1/4W144513 R17RES MF 221 OHM 1% 1/4W144559 R18RES MF 3.32K 1% 1/4W144

23、518 R19RES MF 221 OHM 1% 1/4W144559 R20RES MF 1K 1% 1/4W144513 R21RES MF 221 OHM 1% 1/4W144559 R22RES MF 267 OHM 1% 1/4W144560 R23RES MF 267K 1% 1/4W144532 R24RES MF 187K 1% 1/4W144621 R25RES MF 324 OHM 1% 1/4W144597 R26RES MF 324 OHM 1% 1/4W144597 R27RES MF 3.79K .5% 1/4W144711 R28RES MF 6.49K .5%

24、1/4W144617 R29RES MF 221 OHM 1% 1/4W144559 R30RES WW 2 OHM 10% 5W139253 R31RES WW 4 OHM 5% 5W139248 R32RES FP 22 OHM 5% 1/4W137111 R33RES FP 22 OHM 5% 1/4W137111 R34RES MF 324 OHM 1% 1/4W144597 R35RES MF 324 OHM 1% 1/4W144597 R36RES WW 0.1 OHM 5% 1W144697 R37RES MF 22.1K 1% 1/4W144564 R39RES MF 22.1

25、K 1% 1/4W144564 R40RES MET OX 680 OHM 5% 1/2W137099 R41RES MET OX 680 OHM 5% 1/2W137099 R42RES MF 1.82K 1% 1/4W144582 R43RES MET OX 430 OHM 5% 1/2W137101 R44POT TRIM 200 OHM 20% HORIZ AD134506 R45RES MF 1.82K 1% 1/4W144582 R46RES MET OX 47 OHM 5% 1/2W137102 R47RES WW DUAL .47 OHM 5% 5W139252 R48RES

26、WW DUAL .47 OHM 5% 5W139252 R49RES WW DUAL .47 OHM 5% 5W139252 R50RES WW DUAL .47 OHM 5% 5W139252 R51RES WW DUAL .47 OHM 5% 5W139252 R52RES MF 1K 1% 1/4W144513 R53RES MF 1K 1% 1/4W144513 R54RES WW DUAL .47 OHM 5% 5W139252 RT1SENSOR THERMAL144249 POWER PCB 749831 C1CAP POLYPROP .047UF 10% 250VDC06436

27、4 C2CAP ELECT 10UF 50V066445 C5CAP ELECT 22UF 100V066574 C6CAP ELECT 3300UF 35V066509 C7CAP ELECT 3300UF 35V066509 C8CAP ELECT 4.7UF 50V066512 C9CAP ELECT 10UF 100VDC066462 D1DIODE RECTIFIER070175 D2DIODE RECTIFIER070175 D3DIODE RECTIFIER070175 D4DIODE RECTIFIER070175 D5DIODE RECTIFIER070175 D6DIODE

28、 RECTIFIER070175 D7DIODE SILICON070174 HS1HEATSINK T0220080014 HS2HEATSINK T0220080014 J1BLADE FASTON W/FEET117708 J2BLADE FASTON W/FEET117708 Ref. No.DescriptionPart No.Ref. No.DescriptionPart No. 2324 PARTS LIST contd 5 J3BLADE FASTON W/FEET117708 J4BLADE FASTON W/FEET117708 J5BLADE FASTON W/FEET1

29、17708 J6BLADE FASTON W/FEET117708 J9BLADE FASTON W/FEET117708 J7CONN MALE 7 PIN117217 J8CONN 4 PIN117215 J10CONN 4 PIN117215 J13BLADE FASTON W/FEET117708 J11CONN HEADER 2 PIN 0.156117404 J12CONN HEADER 2 PIN 0.156117404 J14CONN MALE 9 POS FRICTION LOCK117244 J15CONN MALE 9 POS FRICTION LOCK117244 J1

30、6CONN MALE 9 POS FRICTION LOCK117244 J17BLADE FASTON W/FEET117708 J18BLADE FASTON W/FEET117708 K1RELAY 48VDC TV-F087080 PCB1PC BD POWER SUPPLY129660 Q1TRIAC OPTOCOUPLER131024 Q2TRANSISTOR NPN SILICON132317 Q3TRANSISTOR PNP SILICON132304 Q4TRANSISTOR NPN SILICON132317 Q5TRANSISTOR PNP SILICON132304 Q

31、6TRANSISTOR P CHAN JUNCTION FET132320 Q7TRANSISTOR PNP SILICON132304 U2IC REGULATOR -15V133588 U1IC REGULATOR 15V133589 R1RES MF 33.2K 1% 1/4W144694 R2RES MF 33.2K 1% 1/4W144694 R3RES MF 2.74M 1% 1/4W144578 R4RES WW 1.5K 5% 5W139247 R5RES MF 1.1K 1% 1/4W144514 R6RES MF 22.1K 1% 1/4W144564 R7RES MF 1

32、M 1% 1/4W144577 R8RES MF 12.1K 1% 1/4W144550 R9RES MF 2.1K 1% 1/4W144585 R10RES MF 12.1K 1% 1/4W144550 R11RES MF 3.32K 1% 1/4W144518 R12RES MF 20K 1% 1/4W144524 R13RES MF 2.1K 1% 1/4W144585 R14RES MF 150K 1% 1/4W144627 R15RES WW 2.7 OHM 10% 2W FP139259 R16RES WW 2.7 OHM 10% 2W FP139259 SP1BRACKET PC

33、B CARD MOUNTING003611 SP2BRACKET PCB CARD MOUNTING003611 SP4BRACKET PCB CARD MOUNTING003611 SP32BRACKET PCB CARD MOUNTING003611 T1TRANSFORMER CURRENT159353 SCR MS 6-32 X 3/16 SEMS PH PN400348 INPUT PCB 749829 C1CAP ELECT 10UF 50V066445 C2CAP ELECT 10UF 50V066445 C3CAP MONO .1UF 50V 20% Z5U061346 C4C

34、AP MONO 47PF 200V 10% NPO061340 C5CAP MONO 22PF 200V 10% NPO061339 C6CAP MONO 22PF 200V 10% NPO061339 C7CAP MPF 0.22UF 5% 63VDC064329 C8CAP ELECT 10UF 50V066445 C9CAP MONO .1UF 50V 20% Z5U061346 C10CAP MONO .1UF 50V 20% Z5U061346 C11CAP MPF 0.022UF 5% 63VDC064316 J1CONN XLR FEM HORIZ PCB LATCH117814

35、 J2JACK RCA 1P RED117706 J3JACK HEADPHONE DUAL BLACK 1/8”117825 J5CONN MALE 9 POS FRICTION LOCK117244 J6CONN MALE 9 POS FRICTION LOCK117244 PCB1PC BD INPUT129658 R1RES MF 100 OHM 1% 1/4W144568 R2RES MF 174K 1% 1/4W144601 R3RES MF 174K 1% 1/4W144601 R4RES MF 68.1 OHM 1% 1/4W144507 R5RES MF 10K 1% 1/4

36、W144504 R6RES MF 10K 1% 1/4W144504 R7RES MF 10K 1% 1/4W144504 R8RES MF 1M 1% 1/4W144577 R9RES MF 1.5K 1% 1/4W144539 R10RES MF 1.5K 1% 1/4W144539 R11RES MF 20K 1% 1/4W144524 R12RES MF 10 OHM 1% 1/4W144553 R13RES MF 10 OHM 1% 1/4W144553 S1SWITCH SLIDE DPDT148076 SP1BRACKET PCB CARD MOUNTING003611 U1IC

37、 OPERATIONAL AMP LOW NOISE133565 U3IC REGULATOR +5V133568 U2IC NAND SCHMIT 2-IN X 4133595 SCR MS 6-32X1/4 SEMS PH PN CLR400250 NUT KEP 6-32 SPECIAL402045 METER/LIGHTS PCB 749830 SPACER LED 3/4” LONG017927 C1CAP MONO .1UF 50V 20% Z5U061346 C2CAP ELECT 1000UF 25V066513 C3CAP MONO .1UF 50V 20% Z5U06134

38、6 C4CAP MONO .1UF 50V 20% Z5U061346 C5CAP MONO .1UF 50V 20% Z5U061346 C6CAP MPF 1UF 5% 63VDC064337 C7CAP MPF 0.22UF 5% 63VDC064329 D1DIODE ZENER 8.2V 1/2W070130 D2DIODE SILICON070174 D3DIODE SILICON070174 D4DIODE SILICON070174 D5DIODE SILICON070174 D6DIODE SILICON070174 D7DIODE SILICON070174 D8DIODE

39、 SILICON070174 D9LED AMBER058133 DS1LED BLU 5MM HI-INTENSITY058166 (DS1)SPACER LED112108 DS2LED GRN 5MM HI-INTENSITY058165 (DS2)SPACER LED112108 DS3LED BLU 5MM HI-INTENSITY058166 (DS3)SPACER LED112108 DS4LED GRN 5MM HI-INTENSITY058165 (DS4)SPACER LED112108 DS5LED GRN 5MM HI-INTENSITY058165 (DS5)SPAC

40、ER LED112108 DS6LED GRN 5MM HI-INTENSITY058165 (DS6)SPACER LED112108 DS7LED GRN 5MM HI-INTENSITY058165 (DS7)SPACER LED112108 DS8LED RED HIGH EFFICIENCY058148 D10DIODE SILICON070174 D11DIODE SILICON070174 D12DIODE SILICON070174 J1CONN MALE 9 POS FRICTION LOCK117244 J2CONN 4 PIN117215 J3CONN 3 POS MAL

41、E MTS100 NORMAL117214 J4HEADER 2 PIN LATCHING117766 J5CONN 4 PIN117215 Q1TRANSISTOR NPN SILICON132317 Q2TRANSISTOR NPN SILICON132317 Q3TRANSISTOR NPN SILICON132317 Q4TRANSISTOR NPN SILICON132317 Q5TRANSISTOR NPN SILICON132317 Q6TRANSISTOR PNP132254 Q7TRANSISTOR PNP132254 U1IC DUAL OPERATIONAL AMPLIF

42、IER133578 U2IC DUAL OPERATIONAL AMPLIFIER133578 R1RES MF 47.5K 1% 1/4W144526 R2RES MF 47.5K 1% 1/4W144526 R3RES MF 10K 1% 1/4W144504 R4RES MF 10K 1% 1/4W144504 R5RES MF 8.25 OHM 1% 1/4W144558 R6RES MF 93.1K 1% 1/4W144625 R7RES MF 7.5K 1% 1/4W144571 R8RES MF 12.1K 1% 1/4W144550 R9RES MF 221K 1% 1/4W1

43、44629 R10RES MF 150K 1% 1/4W144627 R11RES MF 4.75K 1% 1/4W144520 R12RES MF 200K 1% 1/4W144531 R13RES MF 681 OHM 1% 1/4W144567 R14RES MF 18.2K 1% 1/4W144563 R15RES MF 22.1K 1% 1/4W144564 R16RES MF 10M 1% 1/4W144575 R17RES MF 150K 1% 1/4W144627 R18RES MF 12.1K 1% 1/4W144550 R19RES MF 4.75K 1% 1/4W1445

44、20 R20POT TRIM 2K OHM 20%134507 R21POT TRIM 2K OHM 20%134507 R22POT TRIM 100K OHM 20%134504 R23RES MF 365 OHM 1% 1/4W144505 R24RES MF 365 OHM 1% 1/4W144505 R26RES MF 12.1K 1% 1/4W144550 R29RES MF 806 OHM 1% 1/4W144512 R30RES MF 200K 1% 1/4W144531 R31RES MF 4.75K 1% 1/4W144520 R25RES MF 100 OHM 1% 1/

45、4W144568 R27RES MF 2.74M 1% 1/4W144578 R28RES MF 562 OHM 1% 1/4W144622 PC BD METER129659 4 POWER PCB 749831 (Contd.) Ref. No.DescriptionPart No.Ref. No.DescriptionPart No.Ref. No.DescriptionPart No. 2526 MC501 EXPLODED VIEW 2827 EXPLODED VIEW cont and PARTS LIST 1016492CENTER GLASS PLATE 2016491GLAS

46、S PANEL W/HOLE 3018717END CAP 4018715TOP/BOTTOM END CAP 5018711CENTER EXTRUSION 7749321ASSY KNOB 8104164WASHER FELT BLK 1 X 1/4 X 1/16 9400342SCREW 6-32 X 3/8 FILLISTER HD 10092418FILTER BLUE DISPLAY 11005309GLASS PANEL PLATE 12005311GAP PLATE 13400276SCREW MACH SEM 6-32 X 5/16 PH PN 14401074SCREW T

47、APPING 4-40 X 1/4 PH PN 15005788METER CLAMP 16017913LOGO BACKLIGHT 17094430FOAM TAPE 1/8” THK 18124093METER 19163026LOGO PUSHBUTTON BACKLIGHT 20094274TAPE ADHESIVE 21163037BACKLIGHT METER 2.8 X 6.1 22005306SUBPANEL 23146243SWITCH POWER 24021159BUSHING SWITCH 25104138WASHER FIBER .150ID X .312OD 2640

48、2045KEP NUT 6-32 SPECIAL 27021030SPACER 6 X 1/4 28749830ASSY METER PCB 29401054SCREW TAPTITE 6-32 X 1/4 PH PN BLK 30401172SCREW TC 6-32 X 1/4 PH FL U/C 31005291DUST COVER 32400200SCREW MACH 10-32 X 1/2 TRUSS HD 33126937DECAL TOP COVER 34401059SCREW SM 6-18 X 5/8 PH PN TYPE A 35749846POTTED TRANSFORMER POWER 36749847POTTED TRANS