McIntosh-MC12KW-pwr-sm 维修电路原理图.pdf

MC1.2KWPerformance Specifications .2Notes .2Rear Panel .3Section Location .4Block Diagram .5 - 6Interconnection Diagram .7 - 8Heatsink Schematic and PCB .9 - 10Heatsink Slave Schematic and PCB .11 - 12Driver Schematic and PCB.13 - 15Input Schematic and PCB .16Capacitor Schematic and PCB .17 - 18Meter Schematic and PCB .19 - 22Lamp Schematic and PCB .23 - 24Light Schematic and PCB .25Power Guard Schematic and PCB .26Parts List .29 - 32Repacking Instruction .33CONTENTSSERIAL NO. YF1001 And AboveMC1.2KWPOWER AMPLIFIERSERVICE MANUALDownloaded from www.M manuals search engine RadioFans.CN 收音机爱 好者资料库PERFORMANCE SPECIFICATIONS21. 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 15. WARNING Parts marked with the symbol have critical characteristics. Use only replacement parts recom- mended by the manufacturer.NOTESPower OutputMinimum sine wave continuous average power output is:1,200 watts into 2 ohm load1,200 watts into 4 ohm load1,200 watts into 8 ohm loadOutput Load Impedance2, 4 or 8 ohms Rated Power Band20Hz to 20,000HzTotal Harmonic Distortion0.005% maximum harmonic distortion at any power level from 250 milliwatts to rated power, 20Hz to 20,000HzDynamic Headroom2dBFrequency Response+0, -0.25dB from 20Hz to 20,000Hz+0, -3dB from 10Hz to 100,000HzInput Sensitivity (for rated output)2.5 Volt Unbalanced5 Volt BalancedSignal To Noise Ratio (A-Weighted)120dB below rated output, Unbalanced124dB below rated output, BalancedIntermodulation Distortion0.005% 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 FactorGreater than 40Input Impedance10,000 ohmsPower GuardLess than 2% THD with up to 14dB overdrive at 1,000HzPower Requirements100 Volts, 50/60Hz at 15 Amps110 Volts, 50/60Hz at 12.5 Amps120 Volts, 50/60Hz at 12 Amps220 Volts, 50/60Hz at 7.5 Amps230 Volts, 50/60Hz at 6.5 Amps240 Volts, 50/60Hz at 6.5 AmpsStandby: 0.5 wattsNote: Refer to the rear panel of the MC1.2KW for the correct voltage.Overall DimensionsWidth is 17-3/4 inches (45.09cm)Height is 12-5/16 inches (31.27cm) including feetDepth is 22 inches (55.88cm) including the Front Panel and CablesWeight147 pounds (66.7 kg) net, 172 pounds (78.0 kg) in ship-ping cartonShipping Carton DimensionsWidth 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MC1.2KW3REAR PANELDownloaded from www.M manuals search engine 4SECTION LOCATIONSTOP VIEW WITH COVER REMOVEDBOTTOM VIEW WITH COVER REMOVEDDownloaded from www.M manuals search engine MC1.2KWBLOCK DIAGRAM56Downloaded from www.M manuals search engine 78INTERCONNECT1Downloaded from www.M manuals search engine MC1.2KW910HEATSINK MASTER 749485 SCH and PCB2A 2BBIAS ADJUSTMENTOPERATE 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 1112HEATSINK SLAVE 749487 SCH and PCB 3A 3BDownloaded from www.M manuals search engine MC1.2KW1314DRIVER 750760 SCH 412V11V-11VTHERMAMPAMPDRIVEDRIVEPWRTHERMTHERMTHERMPOWERPOWEROUTPOWERGNDGNDPOWEROUTPOWER365R418 OHM33.2kR10833.2kR107CONTROL INJ6:9CONTROL150kR59150kR39J6:8-12VGUARDINPUT +SENSORSENSORSENSORJ1:1J2:2TURN ON.1uFC1022.1kR1012.21kR105470pFC9AMPDIFF.CURRENTAMP100pFC8SOURCECURRENT470pFC2SOURCECURRENT100pFC5DIFF.AMPVOLTAGEVOLTAGEVOLTAGEVOLTAGE47 .5 WR27FEEDBACK B2 OHMMETER V-DRIVEFEEDBACK B+DRIVE B-DRIVE A8 OHM2 OHMFEEDBACK AFEEDBACK A-72VJ6:6J6:4J6:5J6:1J7:4INPUT -J7:7J7:8J4:2J3:1SENSORJ6:3.1uFC1100R100100R5.47uFC21213SGDQ7213SGDQ101.5kR352.21MR342.21kR103CONTROL10uFC1222.1kR32100R62213SGDQ8213SGDQ11100kR78312Q37475R154POWERCONTROLCONTROL IN1.8pFC43475kR331kR60470pFC27806R57470pFC281kR4213Q68324R67SOURCE100pFC6312Q20470pFC31kR23.32kR75470pFC41kR3DIFF.806R30321Q641kR1806R64324R47SOURCECURRENT100pFC7321Q18806R91DIFF.324R46312Q23220uFC41267R56365R71321Q565.36k.5%R38AMP2 10WR118221R49.01uFC37.15uFC35AMP365R88221R31.01uFC36.15uFC34AMP10uFC14RIGHT-DRIVE BFEEDBACK B10R15710R158FEEDBACK AMETER V+DRIVE+DRIVE A10R156J7:5J7:61.5kR3733.2kR104312Q78J6:7312Q38CONTROLJ7:3312Q39475kR55J7:1213Q21324R42324R443.32kR72321Q14312Q16267R54312Q17321Q552 10WR11710uFC1610R155J7:2POWER GUARDJ9:3FEEDBACK B6.49k .5 %R51J1:3J3:410uFC11231-+84B+B-U1:1312Q664.75kR582.21MR40221R15310uFC19312Q36312Q13.32kR69213Q7247.5kR63324R48213Q15312Q19681kR70321Q75321Q63100kR79324R433.32kR53.022uFC391234LDR1213Q62213Q61312Q22312Q13681kR68321Q60324R45J2:4J1:4J9:2.15uFC325.36k.5%R50J6:10213Q41J2:3J1:6J4:4J9:1.15uFC33FEEDBACK AJ9:4J6:11213Q42J4:3J3:3J3:6J3:247 .5 WR74J3:747uFC15312Q6733.2kR106221R15247.5kR61J1:52 10WR114312Q122 10WR116365R93J3:56.49k .5%R36657-+U1:2TURN/ONTURN/ONTURN/ON-12V-12V-72VR-72VR-72VR-72VR-72VR-72VR-72VR-72VR-72VR-72VR11V11V11V-72VR-72VR72VR72VR72VR-12V12V11V-11V11V11VMONO/B72VR72VR72VR72VR72VR-72VR72VR72VR-11V-11V11V72VRJ7:10J6:2METER LIGHTCONTROLMETER LIGHTCONTROL3B75J1-10J1-173BJ1-9J1-32B3AJ1-7J1-32AJ1-75J1-35J1-45J1-55J1-65J1-77J1-117J1-8GND7J1-77J1-6-.1V-.1V-.1V-.1V-19V-19V-18V16V16V16V16V-12V11V11V11V777555J1-5J1-4J1-3J1-8J1-9J1-100V0V0V0V0V-70.3V.6V.6V0V-70.3V-70.3V-69.7V-70.3V-1.74V-1.74VJ1-4J1-4T2T2J1-2J1-3J1-2J1-5J1-2J1-4J1-3J1-1T2T2J1-1J1-2J1-6J1-2J1-5J1-12B2B1173B2B2B2A3A1172A3A2A2A2A2A72VGND72V1.74V-1.74V1.74VGND70.3V70.3V70.3V0V-.7V-.6V-.6V69.7V70.3V1.74V71V70.4V-71V0V.6V.7V.6V0V-70.3V-70.3V-70.3V-69.7V-1.74V-70.3V0V0V0V71V.7V70.4V70.3V70.3V0V-.6V-70.4V-71V-.6V-.7V69.7V70.3V1.74V70.3V0V70.4VDownloaded from www.M manuals search engine 1516DRIVER 750760 PCB 4INPUT 750753 SCH and PCB 5702473Q67C15Q23Q16Q17C21R67Q75R79Q14C5R157R158Q19R48Q72Q15R64R53Q20C6R70C9Q12R88J2Q41R39R4R2R57C3R69J7R34R37R40R35LDR1C27+C12-R100C11R5Q63R47R43R51R49C37Q68R50Q10Q78Q11R152Q7R58Q8R32R153R104C19R105Q37R106C33R108Q38R107Q39R101Q36Q1C14R41Q55J1R74C35R93R59R71Q56Q42C16R27R114J3C32R118J9R117R103C34R116J6Q66R154R33R63R62R61C1C41R44R78R60U1C10R55C43C28R56C39R54R38R31C36RoHSR36Rev.AQ62R42Q60Q61R46129863R45Q64Q18C7C4Q13R91R72Q21Q22C8R68R156R155R3R1C2R30R75J4INOUTGNDOUTCONTROL INPOWERINPUT-INPUT+POWER CONTROL4231S-+GJ4251J11251J1210uFC410uFC6187kR13922pFC12.1uFC9GND187kR132100R13010kR131power control outpower control in10kR142.1uFC10POWER CONTROL OUTPOWER CONTROL IN47pFC8657-+U1:2456213S1231-+84B+B-U1:1231J210kR140POWER CONTROLJ7:8J7:9POWER CONTROLJ7:10J7:4J7:5J7:2J7:1J7:6J7:3J7:711V-11V-11V11V4231S-+GJ50V0V0V444444444J7-4J7-5J7-8J7-10J7-9J7-7J7-6J7-3J7-1J7-2NCMETER LIGHT CONTROLGND-11V11V11V-11V-11V-11V4702471R130J12J11C10C9R142C8C12C6S1R131J2R139R132J5C4J7J4R140U1Downloaded from www.M manuals search engine MC1.2KW1718CAPACITOR 749367 SCH and PCB 6Downloaded from www.M manuals search engine 1920METER POWER SUPPLY 750752 SCH 1 of 270V0V0V0V1.82kR760VD140V12T1METER V+1.82kR750V0VCALIBRATIOND4-.5VDC AMPMETER -0VMETER V-22.1kR731000uFC110R35D7D6200kR30D110MR8100kCCW123R1METER-.65VRECTIFIER.1uFC22D51uFC12D3100R10.1uFC232.74MR12HOLD312Q1METER +22.1kR7422.1kR5475kR77231-+84B+B-U3:1LOG AMPCURRENTMETER CURRENTVOLTAGELOG AMP.22uFC15J3:1657-+U3:2D224.99kR6200kR718.2kR9150kR36.1uFC21.1uFC14J3:21.1kR4312Q9321Q8D2231-+84B+B-U2:1657-+U2:212.1kR66D18324R78J1:2J1:110V10V-6V12V-12V12V12V-12V10V-6V-12VHOLD44J6-10J6-110V0V11MT1+MT1-Downloaded from www.M manuals search engine MC1.2KW2122METER POWER SUPPLY 750752 SCH 2 of 2 and PCB 7TURN ON5V REG.GND2.7 2WR691000uFC304.7uFC271MR54312Q18-12V12V1000uFC31D28312INOUTU7231INOUTU6213IN OUTQ21D32J16T1/BRNJ2:5SUPPLYJ1:6D30T1/BRNJ15J2:2J2:6312SGDQ19J1:9METERD27J1:8.1uFC262.74MR64312Q15150kR70J1:75v12V-12V12V-20V10VAC-6V10V-20V33.2kR62D31OUTGNDONAC SWITCHEDAC COMM.POWERCONTROLIN1MR5922.1kR57.22uFC2822.1kR55100R5633.2kR614621Q231.1kR6022uFC29POWERCONTROLT1/YEL/BLKWIPERPOWER SWREMOTEPOWER SWSTBY L EDCATHODESTBY LEDANODEJ9:7J1:5J1:3J12J9:4J9:1POWER SWJ10:1J1:41237B+GND14U5:1J10:4321K11.5kR68456U5:2121311U5:49108U5:35v12vSW2HOLDLIGHTSON200kR5233.2kR63681R58312Q20475kR72J1:11J2:4J2:3SW2METER LIGHT SWPG LED312Q17WIPERJ8:1J8:2J2:1J8:320V-12V12VD2910uFC320V312Q320KR16-12V12.1kR65312Q44.75kR320VPGHOLDJMP1PANEL LEDD8J1:10312Q2-12VMETER LEDMETER LIGHTCONTROL312Q547.5kR2771111011011S1 BLKJ8-4J8-1S1 BRNS1 RED J6-7J6-9POWERCONTROL0V0V0V0V0V20V-20V.6V11V-19V11V-.6V-.5V.2V.8V.1V.6V11V-12V-6V7788111848884444J6-6J6-4J6-5J6-3J1-6J1-2J1-5TURNONGNDJ6-2J1-1S2 BLKS2 BRNS2 REDJ1-3J1-4J6-1J6-8POWERCONTROLOUTT1T1T15V702470D29R30R9R65J3R3J2Q5Q4R63D8R16R1R2Q2Q3C3J10JMP1R61R62R68R69J8J15J16Q1D4Q8C30D32Q9R77D3D5C15C12R4D30R70R36D7D1D6R10R8D18R5+T1J12J9R72Q21D2K1Q23C29D31R60C26R56R57R52Q17Q20R58C31U7C23C14U6R78C21R66D27R12U3R7R6Q18U2R76Q19R35C22C1R74R75R73J1R55C28R59RoHSRev.A129860U5R54R64D14D28D22C27Q15Downloaded from www.M manuals search engine 2324LAMP 750759 SCH and PCB 81012V10LOGO2-NCLOGO1-NCGND-12V12V4C4C4B7777BLUEJ7:1NCJ7:4PANEL LED4B4C74B7GREENGREENBLUE1010221R8J6:3J6:2J5:3J2:6J2:5J2:2J2:1500CCW123R3500CCW123R1PG LIGHT681R12DS3DS4DS1DS2J7:2J7:347.5R1447.5R747.5R1347.5R5221R6806R9J5:2J6:1J2:4J5:1J2:3500CCW123R2500CCW123R4J4:3J4:2J4:4681R10J3:3LOGO2+LOGO1+J1:6PG LEDMETER LEDONJ1:1DS7DS8DS5DS6J3:1J3:2J2:3J2:1J1:5J1:2J1:3J4:1J2:2J1:412V12V-12V-12V-12V12V12VLOGOLOGOLOGOPG_LIGHTPG_LIGHTCOLORBRIGHTNESSCOLORBRIGHTNESSNCDS8DS7DS3DS4R14J1R7R8J2R9R12RoHSRev.A129862AJ4J3R5R13R10R6DS6DS5DS2DS1R1COLORR2BRIGHTNESSR3COLOR BRIGHTNESSR4Downloaded from www.M manuals search engine MC1.2KW2526LIGHT 750759 SCH and PCB 9ALIGHT 750759 SCH and PCB 9BPOWER GUARD 750759 SCH and PCB 104AJ2:2LOGO1-4AJ2:14AJ2:3LOGO1+NCDS9J5:1J5:3J5:2RoHS129862BJ5Rev.ADS9LOGO2-4A4AJ3:2J3:1NC4AJ3:3DS10DS11LOGO2+J6:1J6:3J6:2DS11J6Rev.A129862CDS10RoHS4AJ4:44AJ4:24AJ4:1NCANODESTBY LED4AJ4:312VD1STBY LEDCATHODED2J7:3J7:4J8:4J8:3PG LIGHTJ7:1J8:1J7:2J8:2NCSTBY LEDCATHODEJ10-4J10-17777PGSTBY*129862DD2Rev.AD1RoHSJ7J8Downloaded from www.M manuals search engine NOTES2728Downloaded from www.M manuals search engine MC1.2KWPARTS LIST29INTERCONNECTRef. No. Description Part No.1Ref. No. Description Part No.C5 CAPACITOR ASSY 052005C6 CAPACITOR ASSY 052005CB1 CIRCUIT BREAKER 20A (100-120V) 088022CB1 CIRCUIT BREAKER 10A (220-240V) 088023D1 DIODE BRIDGE RECTIFIER 070181D2 DIODE BRIDGE RECTIFIER 070181MT1 METER 124105RT1 THERMISTOR ASSY 052017RT2 THERMISTOR ASSY 052017S1 SWITCH POWER 146243S2 SWITCH POWER 146243T1 POWER TRANSFORMER 750754T2 OUTPUT TRANSFORMER, POTTED 750755TB1 AC TERMINAL BLOCK 074091749485 HEATSINK MASTER PCB2C1 CAP ELECT 47UF 35V 066446C2 CAP ELECT 47UF 35V 066446C3 CAP MONO .1UF 50V 20% Z5U 061346C5 CAP MONO .1UF 50V 20% Z5U 061346C7 CAP MONO 100PF 100V 10% NPO 061341C8 CAP MONO 100PF 100V 10% NPO 061341C9 CAP MONO .01UF 50V 20% X7R 061345C10 CAP POLYPROP 0.15UF 10% 250VDC 064363C16 CAP MONO .01UF 50V 20% X7R 061345D1 DIODE SILICON 070174D2 DIODE SILICON 070174D3 DIODE SILICON 070174D4 DIODE SILICON 070174D5 DIODE SILICON 070174D6 DIODE 200V 6A 070133D7 DIODE 200V 6A 070133J1 CONN MALE 7 PIN 117217J2_ CONN HEADER 2 PIN 0.156 117404J4_ BLADE FASTON W/FEET 117708J4_ CONN 2 PIN MALE 117213J5 BLADE FASTON .110 117712L1 CHOKE RF 3.3UH 10% 122398PCB1 PC BD HEATSINK 129770Q1 TRANSISTOR NPN SILICON 132317Q2 TRANSISTOR PNP SILICON 132304Q3 TRANSISTOR NPN 132310Q4 TRANSISTOR PNP 132311Q6 TRANSISTOR NPN 132325Q7 TRANSISTOR PNP 132326Q8 TRANSISTOR PNP 200W 230V 132314Q9 TRANSISTOR NPN 200W 230V 132313Q10 TRANSISTOR PNP 200W 230V 132314Q11 TRANSISTOR NPN 200W 230V 132313Q19 TRANSISTOR NPN 200W 230V 132313Q26 TRANSISTOR PNP 200W 230V 132314Q27 TRANSISTOR NPN 200W 230V 132313Q28 TRANSISTOR PNP 200W 230V 132314Q29 TRANSISTOR NPN 200W 230V 132313Q30 TRANSISTOR PNP 200W 230V 132314Q31 TRANSISTOR NPN 200W 230V 132313Q32 TRANSISTOR PNP 200W 230V 132314R1 RES MF 365 OHM 1% 1/4W 144505R2 RES MET OX 680 OHM 5% 1/2W 137099R3 RES MF 22.1K 1% 1/4W 144564R6 RES MET OX 1.8K 5% 1/2W 137100R7 RES MET OX 430 OHM 5% 1/2W 137101R8 RES MF 365 OHM 1% 1/4W 144505R9 RES MET OX 680 OHM 5% 1/2W 137099R10 RES MF 22.1K 1% 1/4W 144564R11 RES MET OX 1.8K 5% 1/2W 137100R12 RES MET OX 47 OHM 5% 1/2W 137102R13 POT TRIM 200 OHM 20% HORIZ AD 134506R30 RES MF 2.21 OHM 1% 1/4W 144607R31 RES WW .5 OHM 5% 5W 139255R32 RES WW .5 OHM 5% 5W 139255R33 RES WW .5 OHM 5% 5W 139255R34 RES WW .5 OHM 5% 5W 139255R35 RES WW .5 OHM 5% 5W 139255R36 RES WW .5 OHM 5% 5W 139255R37 RES WW .5 OHM 5% 5W 139255R38 RES WW .5 OHM 5% 5W 139255R40 RES WW .5 OHM 5% 5W 139255R41 RES WW .5 OHM 5% 5W 139255R42 RES WW .5 OHM 5% 5W 139255R43 RES WW .5 OHM 5% 5W 139255RT1 SENSOR THERMAL 144249 CABLE ASSY HTSINK/HTSINK SLAVE 171717749487 HEATSINK SLAVE PCB3C10 CAP POLYPROP 0.15UF 10% 250VDC 064363D6 DIODE 200V 6A 070133D7 DIODE 200V 6A 070133 SLEEVE SIL FG VW-1 180 DEG #12 077073J1 CONN 4 PIN 117215J2 CONN HEADER 2 PIN 0.156 117404J3 CONN MALE 5 PIN .156 117568J4 BLADE FASTON W/FEET 117708 PC BD HEATSINK SLAVE 129771R12 RES MET OX 47 OHM 5% 1/2W 137102R30 RES MF 2.21 OHM 1% 1/4W 144607R31 RES WW .5 OHM 5% 5W 139255R32 RES WW .5 OHM 5% 5W 139255R33 RES WW .5 OHM 5% 5W 139255R34 RES WW .5 OHM 5% 5W 139255R35 RES WW .5 OHM 5% 5W 139255R36 RES WW .5 OHM 5% 5W 139255R37 RES WW .5 OHM 5% 5W 139255R38 RES WW .5 OHM 5% 5W 139255R40 RES WW .5 OHM 5% 5W 139255R41 RES WW .5 OHM 5% 5W 139255R42 RES WW .5 OHM 5% 5W 139255R43 RES WW .5 OHM 5% 5W 139255RT1 SENSOR THERMAL 144249Q9 TRANSISTOR NPN 200W 230V 132313Q10 TRANSISTOR PNP 200W 230V 132314Q11 TRANSISTOR NPN 200W 230V 132313Q19 TRANSISTOR NPN 200W 230V 132313Q26 TRANSISTOR PNP 200W 230V 132314Q27 TRANSISTOR NPN 200W 230V 132313Q28 TRANSISTOR PNP 200W 230V 132314Q29 TRANSISTOR NPN 200W 230V 132313Q30 TRANSISTOR PNP 200W 230V 132314Q31 TRANSISTOR NPN 200W 230V 132313Q32 TRANSISTOR PNP 200W 230V 132314Downloaded from www.M manuals search engine PARTS LIST cont30750760 DRIVER PCBRef. No. Description Part No.Ref. No. Description Part No.C1 CAP MONO .1UF 50V 20% 061346C2 CAP MONO 470PF 100V 5% NPO 061343C3 CAP MONO 470PF 100V 5% NPO 061343C4 CAP MONO 470PF 100V 5% NPO 061343C5 CAP MONO 100PF 100V 10% NPO 061341C6 CAP MONO 100PF 100V 10% NPO 061341C7 CAP MONO 100PF 100V 10% NPO 061341C8 CAP MONO 100PF 100V 10% NPO 061341C9 CAP MONO 470PF 100V 5% NPO 061343C10 CAP MONO .1UF 50V 20% 061346C11 CAP ELECT 10UF 100VDC 066462C12 CAP ELECT 10UF 100VDC 066462C14 CAP ELECT 10UF 100VDC 066462C15 CAP ELECT 47UF 35V 066446C16 CAP ELECT 10UF 100VDC 066462C19 CAP ELECT 10UF 100VDC 066462C21 CAP ELECT .47UF 50V 20% 066244C27 CAP MONO 470PF 100V 5% NPO 061343C28 CAP MONO 470PF 100V 5% NPO 061343C32 CAP POLYPROP 0.15UF 10% 250VDC 064464C33 CAP POLYPROP 0.15UF 1