McIntosh-MC12KW-pwr-sm维修电路原理图.pdf

MC1.2KW Performance Specifications .2 Notes .2 Rear Panel .3 Section Location .4 Block Diagram .5 - 6 Interconnection Diagram .7 - 8 Heatsink Schematic and PCB .9 - 10 Heatsink Slave Schematic and PCB .11 - 12 Driver Schematic and PCB.13 - 15 Input Schematic and PCB .16 Capacitor Schematic and PCB .17 - 18 Meter Schematic and PCB .19 - 22 Lamp Schematic and PCB .23 - 24 Light Schematic and PCB .25 Power Guard Schematic and PCB .26 Parts List .29 - 32 Repacking Instruction .33 CONTENTS SERIAL NO. YF1001 And Above MC1.2KW POWER AMPLIFIER SERVICE MANUAL Downloaded from www.M manuals search engine RadioFans.CN 收音机爱 好者资料库 PERFORMANCE SPECIFICATIONS 2 1. The heavy lines on the schematic denote the primary signal path. 2. Unless otherwise noted, all voltages indicated on the schematics are measured under the following conditions: a. AC input at rated voltage marked on rear panel. b. All voltages are +/-10% with respect to ground. A high impedance (10 megaohm) voltmeter must be used. 3. Unlessotherwisespecified: a. Resistor values are in ohms. b. Capacitor values are microfarads (uF). c. Inductor 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 Power Output Minimum sine wave continuous average power output is: 1,200 watts into 2 ohm load 1,200 watts into 4 ohm load 1,200 watts into 8 ohm load Output Load Impedance 2, 4 or 8 ohms Rated Power Band 20Hz to 20,000Hz Total Harmonic Distortion 0.005% maximum harmonic distortion at any power level from 250 milliwatts to rated power, 20Hz to 20,000Hz Dynamic Headroom 2dB Frequency Response +0, -0.25dB from 20Hz to 20,000Hz +0, -3dB from 10Hz to 100,000Hz Input Sensitivity (for rated output) 2.5 Volt Unbalanced 5 Volt Balanced Signal To Noise Ratio (A-Weighted) 120dB below rated output, Unbalanced 124dB below rated output, Balanced Intermodulation Distortion 0.005% maximum, if the instantaneous peak power output does not exceed twice the rated power output for any combi- nation of frequencies from 20Hz to 20,000Hz. Wide Band Damping Factor Greater than 40 Input Impedance 10,000 ohms Power Guard Less than 2% THD with up to 14dB overdrive at 1,000Hz Power Requirements 100 Volts, 50/60Hz at 15 Amps 110 Volts, 50/60Hz at 12.5 Amps 120 Volts, 50/60Hz at 12 Amps 220 Volts, 50/60Hz at 7.5 Amps 230 Volts, 50/60Hz at 6.5 Amps 240 Volts, 50/60Hz at 6.5 Amps Standby: 0.5 watts Note: Refer to the rear panel of the MC1.2KW for the correct voltage. Overall Dimensions Width is 17-3/4 inches (45.09cm) Height is 12-5/16 inches (31.27cm) including feet Depth is 22 inches (55.88cm) including the Front Panel and Cables Weight 147 pounds (66.7 kg) net, 172 pounds (78.0 kg) in ship- ping carton Shipping Carton Dimensions Width is 31 inches (78.74cm) Depth is 28 inches (71.12cm) Height is 17-1/4 inches (43.82cm) Downloaded from www.M manuals search engine RadioFans.CN 收音机爱 好者资料库 MC1.2KW 3 REAR PANEL Downloaded from www.M manuals search engine 4 SECTION LOCATIONS TOP VIEW WITH COVER REMOVED BOTTOM VIEW WITH COVER REMOVED Downloaded from www.M manuals search engine MC1.2KW BLOCK DIAGRAM 5 6 Downloaded from www.M manuals search engine 78 INTERCONNECT 1 Downloaded from www.M manuals search engine MC1.2KW 910 HEATSINK MASTER 749485 SCH and PCB 2A 2B BIAS ADJUSTMENT OPERATE THE AMPLIFIER FOR 5 MINUTES WITH NO INPUT SIGNAL. HEATSINKS MUST BE COOL. ADJUST R13 FOR 18+ _2mV ACROSS PINS 1 & 2 OF J4. ADJUST BOTH MASTER HEATSINKS. Downloaded from www.M manuals search engine 1112 HEATSINK SLAVE 749487 SCH and PCB 3A 3B Downloaded from www.M manuals search engine MC1.2KW 1314 DRIVER 750760 SCH 4 12V 11V -11V THERM AMP AMP DRIVE DRIVE PWR THERM THERM THERM POWER POWER OUT POWER GND GND POWER OUT POWER 365 R41 8 OHM 33.2k R108 33.2k R107 CONTROL IN J6:9 CONTROL 150k R59 150k R39 J6:8 -12V GUARD INPUT + SENSOR SENSOR SENSORJ1:1 J2:2 TURN ON .1uF C10 22.1k R101 2.21k R105 470pF C9 AMP DIFF. CURRENT AMP 100pF C8 SOURCE CURRENT 470pF C2 SOURCE CURRENT 100pF C5 DIFF. AMP VOLTAGE VOLTAGE VOLTAGE VOLTAGE 47 .5 W R27 FEEDBACK B 2 OHM METER V- DRIVE FEEDBACK B +DRIVE B -DRIVE A 8 OHM 2 OHM FEEDBACK A FEEDBACK A -72V J6:6 J6:4 J6:5 J6:1 J7:4 INPUT - J7:7 J7:8 J4:2 J3:1 SENSOR J6:3 .1uF C1 100 R100 100 R5 .47uF C21 21 3 S G D Q7 21 3 S G D Q10 1.5k R35 2.21M R34 2.21k R103 CONTROL 10uF C12 22.1k R32 100 R62 21 3 S G D Q8 21 3 S G D Q11 100k R78 31 2 Q37 475 R154 POWER CONTROL CONTROL IN 1.8pF C43 475k R33 1k R60 470pF C27 806 R57 470pF C28 1k R4 21 3 Q68 324 R67 SOURCE 100pF C6 31 2 Q20 470pF C3 1k R2 3.32k R75 470pF C4 1k R3 DIFF. 806 R30 3 21 Q64 1k R1 806 R64 324 R47 SOURCE CURRENT 100pF C7 3 21 Q18 806 R91 DIFF. 324 R46 31 2 Q23 220uF C41 267 R56 365 R71 3 21 Q56 5.36k.5% R38 AMP 2 10W R118 221 R49 .01uF C37 .15uF C35 AMP 365 R88 221 R31 .01uF C36 .15uF C34 AMP 10uF C14 RIGHT -DRIVE B FEEDBACK B 10 R157 10 R158 FEEDBACK A METER V+ DRIVE +DRIVE A 10 R156 J7:5 J7:6 1.5k R37 33.2k R104 31 2 Q78 J6:7 31 2 Q38 CONTROL J7:3 31 2 Q39 475k R55J7:1 21 3 Q21 324 R42 324 R44 3.32k R72 3 21 Q14 31 2 Q16 267 R54 31 2 Q17 3 21 Q55 2 10W R117 10uF C16 10 R155 J7:2 POWER GUARD J9:3 FEEDBACK B 6.49k .5 % R51 J1:3 J3:4 10uF C11 2 3 1 - + 84 B+ B-U1:1 31 2 Q66 4.75k R58 2.21M R40 221 R153 10uF C19 31 2 Q36 31 2 Q1 3.32k R69 21 3 Q72 47.5k R63 324 R48 21 3 Q15 31 2Q19 681k R70 3 21 Q75 3 21 Q63 100k R79 324 R43 3.32k R53 .022uF C39 1 2 3 4 LDR1 21 3 Q62 21 3 Q61 31 2 Q22 31 2 Q13 681k R68 3 21 Q60 324 R45 J2:4 J1:4 J9:2 .15uF C32 5.36k.5% R50 J6:10 21 3 Q41 J2:3 J1:6 J4:4 J9:1 .15uF C33 FEEDBACK A J9:4 J6:11 21 3 Q42 J4:3 J3:3 J3:6 J3:2 47 .5 W R74 J3:7 47uF C15 31 2 Q67 33.2k R106 221 R152 47.5k R61 J1:5 2 10W R114 31 2 Q12 2 10W R116 365 R93 J3:5 6.49k .5% R36 6 5 7 - + U1:2 TURN/ON TURN/ON TURN/ON -12V-12V -72VR -72VR -72VR -72VR -72VR -72VR -72VR -72VR -72VR -72VR 11V11V11V -72VR -72VR 72VR 72VR 72VR -12V 12V11V -11V 11V 11V MONO/B 72VR 72VR 72VR 72VR 72VR -72VR 72VR 72VR -11V -11V 11V 72VR J7:10 J6:2 METER LIGHT CONTROL METER LIGHT CONTROL 3B 7 5 J1-10 J1-1 7 3B J1-9 J1-3 2B 3A J1-7 J1-3 2AJ1-7 5J1-3 5J1-4 5J1-5 5J1-6 5J1-7 7J1-11 7J1-8 GND 7J1-7 7J1-6 -.1V -.1V -.1V -.1V -19V-19V -18V 16V 16V 16V 16V -12V 11V 11V 11V 7 7 7 5 5 5 J1-5 J1-4 J1-3 J1-8 J1-9 J1-10 0V 0V 0V 0V 0V -70.3V .6V .6V 0V -70.3V -70.3V -69.7V -70.3V -1.74V -1.74V J1-4 J1-4 T2 T2 J1-2 J1-3 J1-2 J1-5 J1-2 J1-4 J1-3 J1-1 T2 T2 J1-1 J1-2 J1-6 J1-2 J1-5 J1-1 2B 2B 1 1 7 3B 2B 2B 2A 3A 1 1 7 2A 3A 2A 2A 2A 2A 72V GND 72V 1.74V -1.74V 1.74V GND 70.3V 70.3V 70.3V 0V -.7V -.6V -.6V 69.7V 70.3V 1.74V 71V 70.4V -71V 0V .6V .7V.6V 0V -70.3V -70.3V -70.3V -69.7V -1.74V -70.3V 0V 0V 0V 71V .7V 70.4V 70.3V 70.3V 0V -.6V -70.4V -71V -.6V -.7V 69.7V 70.3V 1.74V 70.3V 0V 70.4V Downloaded from www.M manuals search engine 1516 DRIVER 750760 PCB 4INPUT 750753 SCH and PCB 5 702473 Q67 C15 Q23 Q16 Q17 C21 R67 Q75 R79 Q14 C5 R157 R158 Q19 R48 Q72 Q15 R64 R53 Q20 C6 R70 C9 Q12 R88 J2 Q41 R39 R4 R2 R57 C3 R69 J7 R34 R37 R40 R35 LDR1 C27 + C12 - R100 C11 R5 Q63 R47 R43 R51 R49 C37 Q68 R50 Q10 Q78 Q11 R152 Q7 R58 Q8 R32 R153 R104 C19 R105 Q37 R106 C33 R108 Q38 R107 Q39 R101 Q36 Q1 C14 R41 Q55 J1 R74 C35 R93 R59 R71 Q56 Q42 C16 R27 R114 J3 C32 R118 J9 R117 R103 C34 R116 J6 Q66 R154 R33 R63 R62 R61 C1 C41 R44 R78 R60 U1 C10 R55 C43 C28 R56 C39 R54 R38 R31 C36 RoHS R36 Rev.A Q62 R42 Q60 Q61 R46 129863 R45 Q64 Q18 C7 C4 Q13 R91 R72 Q21 Q22 C8 R68 R156 R155 R3 R1 C2 R30 R75 J4 IN OUT GND OUT CONTROL IN POWER INPUT- INPUT+ POWER CONTROL 4 2 3 1 S - + G J4 2 5 1 J11 2 5 1 J12 10uF C4 10uF C6 187k R139 22pF C12 .1uF C9 GND 187k R132 100 R130 10k R131 power control out power control in 10k R142 .1uF C10 POWER CONTROL OUT POWER CONTROL IN 47pF C8 6 5 7 - + U1:2 4 5 6 2 1 3 S1 2 3 1 - + 84 B+ B- U1:1 2 3 1 J2 10k R140 POWER CONTROL J7:8 J7:9 POWER CONTROL J7:10 J7:4 J7:5 J7:2 J7:1 J7:6 J7:3 J7:7 11V -11V -11V 11V 4 2 3 1 S - + G J5 0V 0V 0V 4 4 4 4 4 4 4 4 4J7-4 J7-5 J7-8 J7-10 J7-9 J7-7 J7-6 J7-3 J7-1 J7-2 NC METER LIGHT CONTROL GND -11V 11V 11V -11V -11V -11V 4 702471 R130 J12J11 C10 C9 R142 C8 C12 C6 S1 R131 J2 R139 R132 J5 C4 J7 J4 R140 U1 Downloaded from www.M manuals search engine MC1.2KW 1718 CAPACITOR 749367 SCH and PCB 6 Downloaded from www.M manuals search engine 1920 METER POWER SUPPLY 750752 SCH 1 of 27 0V 0V 0V 0V 1.82k R76 0V D14 0V 12 T1 METER V+ 1.82k R75 0V 0V CALIBRATION D4 -.5VDC AMP METER - 0V METER V- 22.1k R73 1000uF C1 10 R35 D7 D6 200k R30 D1 10M R8 100k CCW 1 2 3 R1 METER -.65V RECTIFIER .1uF C22 D5 1uF C12 D3 100 R10 .1uF C23 2.74M R12 HOLD 31 2 Q1 METER + 22.1k R74 22.1k R5 475k R77 2 3 1 - + 84 B+ B- U3:1 LOG AMP CURRENT METER CURRENT VOLTAGE LOG AMP .22uF C15 J3:1 6 5 7 - + U3:2 D22 4.99k R6 200k R7 18.2k R9 150k R36 .1uF C21 .1uF C14 J3:2 1.1k R4 31 2 Q9 3 21 Q8 D2 2 3 1 - + 84 B+ B- U2:1 6 5 7 - + U2:2 12.1k R66 D18 324 R78 J1:2 J1:1 10V 10V -6V 12V-12V 12V 12V -12V 10V -6V -12VHOLD 4 4 J6-10 J6-11 0V 0V 1 1 MT1+ MT1- Downloaded from www.M manuals search engine MC1.2KW 2122 METER POWER SUPPLY 750752 SCH 2 of 2 and PCB 7 TURN ON 5V REG. GND 2.7 2W R69 1000uF C30 4.7uF C27 1M R54 31 2 Q18 -12V 12V 1000uF C31 D28 3 1 2 INOUT U7 2 31 INOUT U6 2 13 IN OUT Q21 D32 J16 T1/BRN J2:5 SUPPLY J1:6 D30 T1/BRN J15 J2:2 J2:6 31 2 S G D Q19 J1:9 METER D27 J1:8 .1uF C26 2.74M R64 31 2 Q15 150k R70 J1:7 5v 12V -12V 12V -20V 10VAC -6V 10V -20V 33.2k R62 D31 OUT GND ON AC SWITCHED AC COMM. POWERCONTROL IN 1M R59 22.1k R57 .22uF C28 22.1k R55 100 R56 33.2k R61 4 6 21 Q23 1.1k R60 22uF C29 POWERCONTROL T1/YEL/BLK WIPER POWER SW REMOTE POWER SW STBY L ED CATHODE STBY LED ANODE J9:7 J1:5 J1:3 J12 J9:4 J9:1 POWER SW J10:1 J1:4 1 2 3 7 B+ GND 14 U5:1 J10:4 3 21 K1 1.5k R68 4 5 6 U5:2 12 13 11 U5:4 9 10 8 U5:3 5v 12v SW2 HOLD LIGHTS ON 200k R52 33.2k R63 681 R58 31 2 Q20 475k R72 J1:11 J2:4 J2:3 SW2 METER LIGHT SW PG LED 31 2 Q17 WIPER J8:1 J8:2 J2:1 J8:3 20V -12V 12V D29 10uF C3 20V 31 2 Q3 20K R16 -12V 12.1k R65 31 2 Q4 4.75k R3 20V PG HOLD JMP1 PANEL LED D8 J1:10 31 2 Q2 -12V METER LED METER LIGHT CONTROL 31 2 Q5 47.5k R2 7 7 1 1 1 10 1 10 1 1 S1 BLK J8-4 J8-1 S1 BRN S1 RED J6-7 J6-9 POWERCONTROL 0V 0V 0V 0V 0V 20V -20V .6V 11V -19V 11V -.6V -.5V .2V .8V .1V .6V 11V -12V -6V 7 7 8 8 1 1 1 8 4 8 8 8 4 4 4 4J6-6 J6-4 J6-5 J6-3 J1-6 J1-2 J1-5 TURN ON GND J6-2 J1-1 S2 BLK S2 BRN S2 RED J1-3 J1-4 J6-1 J6-8 POWER CONTROL OUT T1 T1 T1 5V 702470 D29 R30 R9 R65 J3 R3 J2 Q5 Q4 R63 D8 R16 R1 R2 Q2 Q3 C3 J10 JMP1 R61 R62 R68 R69 J8 J15 J16 Q1 D4 Q8 C30 D32 Q9 R77 D3 D5 C15 C12 R4 D30 R70 R36 D7 D1 D6 R10 R8 D18 R5 + T1 J12 J9 R72 Q21 D2 K1 Q23 C29 D31 R60 C26 R56 R57 R52 Q17 Q20 R58 C31 U7 C23 C14 U6 R78 C21 R66 D27 R12 U3 R7 R6 Q18 U2 R76 Q19 R35 C22 C1 R74 R75 R73 J1 R55 C28 R59 RoHS Rev.A 129860 U5 R54 R64 D14 D28 D22 C27 Q15 Downloaded from www.M manuals search engine 2324 LAMP 750759 SCH and PCB 8 10 12V 10 LOGO2- NC LOGO1- NC GND -12V 12V 4C 4C 4B 7 7 7 7 BLUE J7:1 NC J7:4 PANEL LED 4B 4C 7 4B 7 GREEN GREEN BLUE 10 10 221 R8 J6:3 J6:2 J5:3 J2:6 J2:5 J2:2 J2:1 500 CCW 1 2 3 R3 500 CCW 1 2 3 R1 PG LIGHT 681 R12 DS3 DS4 DS1 DS2 J7:2 J7:3 47.5 R14 47.5 R7 47.5 R13 47.5 R5 221 R6 806 R9 J5:2 J6:1 J2:4 J5:1 J2:3 500 CCW 1 2 3 R2 500 CCW 1 2 3 R4 J4:3 J4:2 J4:4 681 R10 J3:3 LOGO2+ LOGO1+ J1:6 PG LED METER LED ON J1:1 DS7 DS8 DS5 DS6 J3:1 J3:2 J2:3 J2:1 J1:5 J1:2 J1:3 J4:1 J2:2 J1:4 12V 12V -12V -12V -12V 12V 12V LOGO LOGO LOGO PG_LIGHT PG_LIGHT COLOR BRIGHTNESS COLOR BRIGHTNESS NC DS8 DS7 DS3 DS4 R14 J1 R7 R8 J2 R9 R12 RoHS Rev.A 129862A J4J3 R5 R13 R10 R6 DS6 DS5 DS2 DS1 R1 COLOR R2 BRIGHTNESS R3 COLOR BRIGHTNESS R4 Downloaded from www.M manuals search engine MC1.2KW 2526 LIGHT 750759 SCH and PCB 9A LIGHT 750759 SCH and PCB 9B POWER GUARD 750759 SCH and PCB 10 4AJ2:2 LOGO1- 4AJ2:1 4AJ2:3 LOGO1+ NC DS9 J5:1 J5:3 J5:2 RoHS 129862B J5 Rev.A DS9 LOGO2- 4A 4A J3:2 J3:1 NC 4AJ3:3 DS10DS11 LOGO2+J6:1 J6:3 J6:2 DS11 J6 Rev.A 129862C DS10 RoHS 4AJ4:4 4AJ4:2 4AJ4:1 NC ANODE STBY LED 4AJ4:3 12V D1 STBY LED CATHODE D2 J7:3 J7:4J8:4 J8:3 PG LIGHT J7:1J8:1 J7:2J8:2 NC STBY LED CATHODE J10-4 J10-1 7 7 7 7 PG STBY * * 129862D D2 Rev.A D1 RoHS J7 J8 Downloaded from www.M manuals search engine NOTES 2728 Downloaded from www.M manuals search engine MC1.2KW PARTS LIST 29 INTERCONNECT Ref. No. Description Part No. 1 Ref. No. Description Part No. C5 CAPACITOR ASSY 052005 C6 CAPACITOR ASSY 052005 CB1 CIRCUIT BREAKER 20A (100-120V) 088022 CB1 CIRCUIT BREAKER 10A (220-240V) 088023 D1 DIODE BRIDGE RECTIFIER 070181 D2 DIODE BRIDGE RECTIFIER 070181 MT1 METER 124105 RT1 THERMISTOR ASSY 052017 RT2 THERMISTOR ASSY 052017 S1 SWITCH POWER 146243 S2 SWITCH POWER 146243 T1 POWER TRANSFORMER 750754 T2 OUTPUT TRANSFORMER, POTTED 750755 TB1 AC TERMINAL BLOCK 074091 749485 HEATSINK MASTER PCB2 C1 CAP ELECT 47UF 35V 066446 C2 CAP ELECT 47UF 35V 066446 C3 CAP MONO .1UF 50V 20% Z5U 061346 C5 CAP MONO .1UF 50V 20% Z5U 061346 C7 CAP MONO 100PF 100V 10% NPO 061341 C8 CAP MONO 100PF 100V 10% NPO 061341 C9 CAP MONO .01UF 50V 20% X7R 061345 C10 CAP POLYPROP 0.15UF 10% 250VDC 064363 C16 CAP MONO .01UF 50V 20% X7R 061345 D1 DIODE SILICON 070174 D2 DIODE SILICON 070174 D3 DIODE SILICON 070174 D4 DIODE SILICON 070174 D5 DIODE SILICON 070174 D6 DIODE 200V 6A 070133 D7 DIODE 200V 6A 070133 J1 CONN MALE 7 PIN 117217 J2_ CONN HEADER 2 PIN 0.156 117404 J4_ BLADE FASTON W/FEET 117708 J4_ CONN 2 PIN MALE 117213 J5 BLADE FASTON .110 117712 L1 CHOKE RF 3.3UH 10% 122398 PCB1 PC BD HEATSINK 129770 Q1 TRANSISTOR NPN SILICON 132317 Q2 TRANSISTOR PNP SILICON 132304 Q3 TRANSISTOR NPN 132310 Q4 TRANSISTOR PNP 132311 Q6 TRANSISTOR NPN 132325 Q7 TRANSISTOR PNP 132326 Q8 TRANSISTOR PNP 200W 230V 132314 Q9 TRANSISTOR NPN 200W 230V 132313 Q10 TRANSISTOR PNP 200W 230V 132314 Q11 TRANSISTOR NPN 200W 230V 132313 Q19 TRANSISTOR NPN 200W 230V 132313 Q26 TRANSISTOR PNP 200W 230V 132314 Q27 TRANSISTOR NPN 200W 230V 132313 Q28 TRANSISTOR PNP 200W 230V 132314 Q29 TRANSISTOR NPN 200W 230V 132313 Q30 TRANSISTOR PNP 200W 230V 132314 Q31 TRANSISTOR NPN 200W 230V 132313 Q32 TRANSISTOR PNP 200W 230V 132314 R1 RES MF 365 OHM 1% 1/4W 144505 R2 RES MET OX 680 OHM 5% 1/2W 137099 R3 RES MF 22