McIntosh-MA6300-int-sm(1) 维修电路原理图.pdf

SERVICE MANUALPerformance Specifications . 2Notes . 3Rear Panel . 4Section Location . 4Block Diagram . 5 - 6Interconnection Diagram . 7 - 8Main Schematic and PCB . 9 - 16Preamp Schematic and PCB. 17 - 20Heatsink Schematic and PCB . 21 - 28Display Schematic and PCB . 29 - 32Push Button Schematic and PCB . 33 - 34Meter Schematic and PCB . 35 - 36Parts List . 37 - 42Repacking Instruction . 43CONTENTSINTEGRATED AMPLIFIERSERIAL NO. WR1001 And AboveRadioFans.CN 收音机爱 好者资料库PERFORMANCE SPECIFICATIONS2Power Output100 watts into an 8 ohm load is the minimum sine wavecontinuous average power output. The output RMSvoltage is 28.3V across 8 ohms160 watts into a 4 ohm load is the minimum sine wavecontinuo us average power output. The output RMSvoltage is 25.3V across 4 ohmsOutput Load Impedance8 and 4 ohmsRated Power Band20Hz to 20,000HzTotal Harmonic Distortion0.005% maximum harmonic distortion at any power levelfrom 250 milliwatts to rated power, 20Hz to 20,000HzDynamic Headroom1.4dBFrequency Response+0, -0.5dB from 20Hz to 20,000Hz+0, -3dB from 10Hz to 100,000HzPreamplifier Main Output1V for rated input (8V Maximun)Sensitivity (for rated output)High Level, 250mV unbalanced, 500mV balancedPhono, 2.5mVPower Amp In, 1VSignal To Noise Ratio (A-Weighted)High Level, 97dB below rated outputPhono, 90dB below 10mV inputPower Amplifier, 110 below rated outputIntermodulation Distortion0.005% maximum, if the instantaneous peak poweroutput is rated power or less per channel with bothchannels operating for any combination of frequenciesfrom 20Hz to 20,000Hz.Wide Band Damping Factor200 at 8 ohms100 at 4 ohmsInput ImpedanceHigh Level, 20K ohmsPhono, 47K ohms; 65pFPower Amp In, 10K ohmsMaximum Input SignalHigh Level, 8VPhono, 90mVPower Amplifier In, 8VMain Output Impedance50 ohmsPower GuardLess than 2% THD with up to 16dB overdrive at 1,000HzVoltage GainHigh Level to Tape Output: 0dBHigh Level to Main Output: 12dBPhono to Main Output: 52dBPower Requirements100 Volts, 50/60Hz at 3.6 amps110 Volts, 50/60Hz at 3.6 amps120 Volts, 50/60Hz at 3.2 amps220 Volts, 50/60Hz at 1.8 amps230 Volts, 50/60Hz at 1.8 amps240 Volts, 50/60Hz at 1.8 ampsNote: Refer to the rear panel of the MA6300 for thecorrect voltage.Overall DimensionsWidth is 17-1/2 inches (44.45cm)Height is 7-5/8 inches (19.37cm) including feetDepth is 22 inches (55.88cm) including the Front Panel,Knobs and CablesWeight37 pounds (16.8 kg) net, 55 pounds (24.9 kg) in shippingcartonShipping Carton DimensionsWidth 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3MA6300NOTES4MA6300REAR PANELSECTION LOCATIONSTOP VIEW WITH COVER REMOVEDINTEGRATED AMPLIFIERMA6300BLOCK DIAGRAM5678INTERCONNECTINTEGRATED AMPLIFIERMA63009102MAIN 050276 SCH 1 OF 311122MAIN 050276 SCH 2 OF 3INTEGRATED AMPLIFIERMA630013142MAIN 050276 SCH 3 OF 315162MAIN 050276 PCBINTEGRATED AMPLIFIERMA630017183PREAMP 050279 SCH19203PREAMP 050279 PCBINTEGRATED AMPLIFIERMA630021224HEATSINK 050280 SCH 1 OF 323244HEATSINK 050280 SCH 2 OF 3INTEGRATED AMPLIFIERMA630025264HEATSINK 050280 SCH 3 OF 327284HEATSINK 050280 PCBINTEGRATED AMPLIFIERMA630029305DISPLAY 050277 SCH 1 of 231325DISPLAY 050277 SCH 2 of 2 and PCBINTEGRATED AMPLIFIERMA630033346PUSH BUTTON 050278 SCH and PCB35367METER 050351 SCH and PCBMA630037PARTS LISTMAIN PCB 050276Ref No. DescriptionPart No.2Ref No. DescriptionPart No.C1CAP POLYPROP 0.15UF 10% 250VDC064363C2CAP MPF 0.1UF 5% 63VDC064325C3CAP MONO .1UF 50V 20% Z5U061346C4CAP ELECT 3300UF 35V066509C5CAP ELECT 22000UF 63V066557C6CAP ELECT 3300UF 35V066509C7CAP ELECT 22000UF 63V066557C8CAP ELECT 3300UF 35V066509C9CAP ELECT 3300UF 35V066509C10CAP ELECT 3300UF 35V066509C11CAP ELECT 1000UF 25V066513C12CAP ELECT 1000UF 25V066513C13CAP ELECT 220UF 25V066507C14CAP MONO .1UF 50V 20% Z5U061346C15CAP MONO .1UF 50V 20% Z5U061346C16CAP MONO .1UF 50V 20% Z5U061346C17CAP ELECT 47UF 35V066446C18CAP MONO .1UF 50V 20% Z5U061346C19CAP ELECT 10UF 50V066445C20CAP ELECT 10UF 50V066445C21CAP MONO 220PF 200V 10% NPO061342C22CAP MONO .1UF 50V 20% Z5U061346C23CAP MONO .1UF 50V 20% Z5U061346C24CAP MONO .1UF 50V 20% Z5U061346C25CAP MONO .1UF 50V 20% Z5U061346C28CAP ELECT 10UF 16V066580C29CAP ELECT 10UF 16V066580C30CAP ELECT 10UF 16V066580C31CAP ELECT 10UF 16V066580C32CAP ELECT 10UF 16V066580C33CAP ELECT 10UF 16V066580C34CAP ELECT 10UF 16V066580C35CAP ELECT 10UF 16V066580C36CAP ELECT 10UF 16V066580C37CAP ELECT 10UF 16V066580C38CAP ELECT 10UF 16V066580C39CAP ELECT 10UF 16V066580C40CAP ELECT 10UF 16V066580C41CAP ELECT 10UF 16V066580C42CAP ELECT 10UF 16V066580C43CAP ELECT 10UF 16V066580C44CAP ELECT 10UF 16V066580C45CAP ELECT 10UF 16V066580C46CAP ELECT 10UF 16V066580C47CAP MONO 100PF 100V 10% NPO061341C48CAP MONO 47PF 200V 10% NPO061340C49CAP ELECT 10UF 16V066580C50CAP ELECT 10UF 16V066580C51CAP ELECT 10UF 16V066580C52CAP ELECT 10UF 16V066580C53CAP MONO 100PF 100V 10% NPO061341C54CAP MONO 100PF 100V 10% NPO061341C55CAP MONO 100PF 100V 10% NPO061341C56CAP MONO 100PF 100V 10% NPO061341C57CAP ELECT 47UF 35V066446C58CAP MONO 100PF 100V 10% NPO061341C59CAP MONO 100PF 100V 10% NPO061341C60CAP ELECT 10UF 16V066580C61CAP ELECT 470UF 16V066508C62CAP ELECT 470UF 16V066508C63CAP MONO 100PF 100V 10% NPO061341C64CAP MONO 47PF 200V 10% NPO061340C65CAP MONO 100PF 100V 10% NPO061341C66CAP MONO 47PF 200V 10% NPO061340C67CAP MONO 100PF 100V 10% NPO061341C68CAP MONO 47PF 200V 10% NPO061340C69CAP MPF 0.01UF 5% 63VDC064312C70CAP MPF 0.01UF 5% 63VDC064312C71CAP MPF 0.033UF 5% 63VDC064318C72CAP MPF 0.033UF 5% 63VDC064318C73CAP ELECT 47UF 35V066446C74CAP MONO .1UF 50V 20% Z5U061346C75CAP MONO .1UF 50V 20% Z5U061346D1DIODE RECTIFIER070175D2DIODE SILICON070174D3DIODE SILICON070174D4DIODE SILICON070174D5DIODE SIL 400 PIV 1.5A070031D6DIODE SIL 400 PIV 1.5A070031D7DIODE SIL 400 PIV 1.5A070031D8DIODE SIL 400 PIV 1.5A070031D9RECTIFIER BRIDGE PCB 35A 600V070187D10DIODE SIL 400 PIV 1.5A070031D11DIODE SIL 400 PIV 1.5A070031D12DIODE SIL 400 PIV 1.5A070031D13DIODE SIL 400 PIV 1.5A070031D14DIODE SILICON070174D15DIODE SILICON070174D16DIODE SILICON070174GP4BRACKET PCB CARD MOUNTING003611(GP4)RIVET 1/8X3/16 STEEL108011GP5BRACKET PCB CARD MOUNTING003611(GP5)RIVET 1/8X3/16 STEEL108011HS1HEATSINK T0220080021(HS1)SCREW MACH 4-40X1/4 PAN PH BLK400121(HS1)NUT KEP 4-40 CLR402001(HS1)INSULATOR ISOSTRATE TO 220084133HS2HEATSINK T0220080021(HS2)SCREW MACH 4-40X1/4 PAN PH BLK400121(HS2)NUT KEP 4-40 CLR402001(HS2)INSULATOR ISOSTRATE TO 220084133HS3HEATSINK T0220080021(HS3)SCREW MACH 4-40X1/4 PAN PH BLK400121(HS3)NUT KEP 4-40 CLR402001(HS3)INSULATOR ISOSTRATE TO 220084133J1BLADE FASTON W/FEET117708J2BLADE FASTON W/FEET117708J3BLADE FASTON W/FEET117708J4BLADE FASTON W/FEET117708J5BLADE FASTON W/FEET117708J6BLADE FASTON W/FEET117708J7BLADE FASTON W/FEET117708J8CONN 2 PIN MALE117213J9CONN 3 POS MALE LARGE FRCTN LK117293J10CONN 23 PIN FFC117906J11JACK HEADPHONE DUAL BLACK 1/8”117549J12JACK HEADPHONE DUAL BLACK 1/8”117549J13JACK HEADPHONE DUAL BLACK 1/8”117549J14JACK HEADPHONE DUAL BLACK 1/8”117549J15CONN 12 PIN FFC11790738PARTS LIST contd.MAIN PCB 050276 (Contd.)Ref No. DescriptionPart No.Ref No. DescriptionPart No.J16JACK RCA 4X2 WHT/RED 14MM117791J17JACK RCA 4X2 WHT/RED 14MM117791J18CONN XLR FEM HORIZ PCB LATCH117814J19CONN XLR FEM HORIZ PCB LATCH117814J20JACK RCA 1X2 WHT/RED 14MM117788K1RELAY 12VDC 5A 250VAC TV-4087077K2RELAY REED SPST-NO 5V 1.2A087078K3RELAY REED SPST-NO 5V 1.2A087078K4RELAY REED SPST-NO 5V 1.2A087078K5RELAY REED SPST-NO 5V 1.2A087078K6RELAY REED SPST-NO 5V 1.2A087078K7RELAY REED SPST-NO 5V 1.2A087078K8RELAY REED SPST-NO 5V 1.2A087078K9RELAY REED SPST-NO 5V 1.2A087078K10RELAY REED SPST-NO 5V 1.2A087078K11RELAY REED SPST-NO 5V 1.2A087078K12RELAY REED SPST-NO 5V 1.2A087078K13RELAY REED SPST-NO 5V 1.2A087078K14RELAY REED SPST-NO 5V 1.2A087078K15RELAY REED SPST-NO 5V 1.2A087078K16RELAY REED SPST-NO 5V 1.2A087078K17RELAY REED SPST-NO 5V 1.2A087078K18RELAY REED SPST-NO 5V 1.2A087078K19RELAY REED SPST-NO 5V 1.2A087078PCB1PC BD MAIN129655Q1TRANSISTOR PNP SILICON132304Q2TRANSISTOR NPN SILICON132317Q3TRANSISTOR PNP SILICON132304Q4TRANSISTOR NPN SILICON132317R1RES POLYSWITCH RXE110144671R2RES POLYSWITCH RXE110144671R3RES MF 2.21 OHM 1% 1/4W144607R4RES MF 22.1K OHM 1% 1/4W144564R5RES MF 100K 1% 1/4W144528R6RES MF 47.5K 1% 1/4W144526R7RES MF 47.5K 1% 1/4W144526R8RES MF 47.5K 1% 1/4W144526R9RES NETWORK 9X-1-223144498R10RES MF 10K 1% 1/4W144504R11RES MF 10 OHM 1% 1/4W144553R12RES MF 100 OHM 1% 1/4W144568R13RES MF 475K 1% 1/4W144604R14RES NETWORK 9X-1-223144498R15RES MF 2.21 OHM 1% 1/4W144607R16RES MF 1K 1% 1/4W144513R17RES MF 100K 1% 1/4W144528R18RES MF 3.32K 1% 1/4W144518R19RES MF 182 OHM 1% 1/4W144579R20RES MF 182 OHM 1% 1/4W144579R21RES MF 182 OHM 1% 1/4W144579R22RES MF 100 OHM 1% 1/4W144568R23RES MF 100 OHM 1% 1/4W144568R24RES MF 100 OHM 1% 1/4W144568R25RES MF 100 OHM 1% 1/4W144568R26RES MF 100 OHM 1% 1/4W144568R27RES MF 100 OHM 1% 1/4W144568R28RES MF 100 OHM 1% 1/4W144568R29RES MET OX 47 OHM 5% 1/2W137102R30RES MF 10K 1% 1/4W144504R31RES MF 10K 1% 1/4W144504R33RES MF 221 OHM 1% 1/4W144559R34RES NETWORK 2X220K ISO144678R35RES MF 221 OHM 1% 1/4W144559R36RES NETWORK 2X220K ISO144678R37RES NETWORK 2X220K ISO144678R38RES NETWORK 2X220K ISO144678R39RES NETWORK 2X220K ISO144678R40RES NETWORK 2X220K ISO144678R41RES NET 2 X 22K ISOLATED144689R42RES NET 2 X 22K ISOLATED144689R43RES MF 22.1K OHM 1% 1/4W144564R44RES MF 1K 1% 1/4W144513R45RES NETWORK 2X220K ISO144678R46RES MF 1K 1% 1/4W144513R47RES MF 1K 1% 1/4W144513R48RES MF 20K 1% 1/4W144524R49RES MF 20K 1% 1/4W144524R50RES MF 20K 1% 1/4W144524R51RES MF 20K 1% 1/4W144524R52RES MF 10K 1% 1/4W144504R53RES MF 10K 1% 1/4W144504R54RES MF 10K 1% 1/4W144504R55RES MF 10K 1% 1/4W144504R56RES MF 22.1 OHM 1% 1/4W144554R57RES MF 22.1K OHM 1% 1/4W144564R58RES NETWORK 2X220K ISO144678R59RES MF 95.3 OHM 1% 1/4W144572R60RES MF 95.3 OHM 1% 1/4W144572R61RES MF 1K 1% 1/4W144513R62RES MF 47.5K 1% 1/4W144526R63RES MF 47.5K 1% 1/4W144526R64RES MF 7.5K OHM 0.5% 1/4W144605R65RES MF 7.5K OHM 0.5% 1/4W144605R66RES MF 89.8K 0.5% 1/4W144606R67RES MF 89.8K 0.5% 1/4W144606R68RES MF 47.5 OHM 1% 1/4W144642R69RES MF 2.21 OHM 1% 1/4W144607R70RES MF 47.5 OHM 1% 1/4W144642R71RES MF 2.21 OHM 1% 1/4W144607R72RES MF 22.1 OHM 1% 1/4W144554U1IC REGULATOR 15V133589U2IC REGULATOR -15V133588U3IC REGULATOR 5V 1.5A LOW DROP133610U4IC NAND 2 INPUT X 4133575U5IC PROGRAMMED V1.00 MA6300133563(U5)SOCKET IC 40-PIN178133U6IC MICRO RESET POS133241U7IC AND 2 INPUT X 4133577U8IC SHFT REG SER-PAR133594U9IC SHFT REG SER-PAR133594U10IC SHFT REG SER-PAR133594U11IC OCTAL DAR TRNS ARRY W/DIODE133624U12IC 8 LN DRIVER ARRAY133180U13IC DUAL OPERATIONAL AMPLIFIER133578U14IC DUAL OPERATIONAL AMPLIFIER133578U15IC OPERATIONAL AMP LOW NOISE133565U16IC OPERATIONAL AMP LOW NOISE133565Y1CERAMIC RESONATOR 12MHZ180059MA630039PARTS LIST contd.PREAMP PCB 050279Ref No. DescriptionPart No.Ref No. DescriptionPart No.C1CAP ELECT 220UF 25V066507C2CAP ELECT 47UF 25V 20% BP066556C3CAP MPF 0.22UF 5% 63VDC064329C4CAP MPF 0.22UF 5% 63VDC064329C5CAP MONO 100PF 100V 10% NPO061341C6CAP MONO 100PF 100V 10% NPO061341C7CAP MONO 100PF 100V 10% NPO061341C8CAP MONO 100PF 100V 10% NPO061341C9CAP MONO .1UF 50V 20% Z5U061346C10CAP MONO 100PF 100V 10% NPO061341C11CAP MONO 100PF 100V 10% NPO061341C12CAP MONO .1UF 50V 20% Z5U061346C13CAP ELECT 47UF 35V066446C14CAP ELECT 47UF 35V066446C15CAP MPF 0.22UF 5% 63VDC064329C16CAP MPF 0.22UF 5% 63VDC064329C17CAP MPF 0.22UF 5% 63VDC064329C18CAP MPF 0.22UF 5% 63VDC064329C19CAP MONO .1UF 50V 20% Z5U061346C20CAP MONO .1UF 50V 20% Z5U061346C21CAP ELECT 22UF 100V066574C22CAP ELECT 22UF 100V066574C23CAP ELECT 100UF 25V066447C24CAP ELECT 100UF 25V066447C25CAP MONO .1UF 50V 20% Z5U061346C29CAP MONO 220PF 200V 10%061342C30CAP MONO 220PF 200V 10%061342C26CAP MONO .1UF 50V 20% Z5U061346C27CAP ELECT 10UF 50V066445C28CAP ELECT 10UF 50V066445D1DIODE SILICON070174J1CONN 12 PIN FFC117720J2CONN 12 PIN FFC117720J3CONN 12 PIN FFC117720J4CONN 12 PIN FFC117720J5CONN 12 PIN FFC117720J6CONN 12 POS MALE RT ANGLE117816K1RELAY REED SPST-NO 5V 1.2A087078PCB1PC BD PREAMP129607R1RES MF 1.5K 1% 1/4W144539R2RES MF 1.5K 1% 1/4W144539R3RES MF 10 OHM 1% 1/4W144553R4RES MF 10 OHM 1% 1/4W144553R5RES MF 10 OHM 1% 1/4W144553R6RES MF 4.75K 1% 1/4W144520R7RES MF 4.75K 1% 1/4W144520R8POT 50KAX2134490R9RES MF 187K 1% 1/4W144621R10RES MF 1K 1% 1/4W144513R11RES MF 1K 1% 1/4W144513R12RES MF 187K 1% 1/4W144621R13RES MF 1.5K 1% 1/4W144539R14RES MF 1.5K 1% 1/4W144539R15RES MF 4.75K 1% 1/4W144520R16RES MF 4.75K 1% 1/4W144520R17POT BALANCE 2KOHM134464R18RES MF 121K 1% 1/4W144626R19RES MF 121K 1% 1/4W144626R20RES MF 47.5K 1% 1/4W144526R21RES MF 47.5K 1% 1/4W144526R22RES MF 33.2K 1% 1/4W144694R23RES MF 33.2K 1% 1/4W144694R24RES MF 47.5 OHM 1% 1/4W144642R25RES MF 47.5 OHM 1% 1/4W144642R26RES MF 221 OHM 1% 1/4W144559R27RES MF 221 OHM 1% 1/4W144559R28RES MF 4.99K 1% 1/4W144521R29RES MF 4.99K 1% 1/4W144521R30RES MF 1K 1% 1/4W144513R31RES MF 1K 1% 1/4W144513R32RES MF 100 OHM 1% 1/4W144568R33RES MF 100 OHM 1% 1/4W144568U1IC DC MOTOR DRIVER133191U2IC DUAL OPERATIONAL AMPLIFIER133260U3IC DUAL OPERATIONAL AMPLIFIER133260U4IC DUAL OPERATIONAL AMPLIFIER133260HEATSINK PCB 050280C1CAP ELECT 10UF 100VDC066462C2CAP ELECT 10UF 100VDC066462C3CAP MONO .1UF 50V 20% Z5U061346C4CAP MONO .1UF 50V 20% Z5U061346C5CAP ELECT 10UF 100VDC066462C6CAP ELECT 10UF 50V066445C7CAP ELECT 10UF 100VDC066462C8CAP ELECT 100UF 25V066573C9CAP ELECT 10UF 50V066445C10CAP ELECT 10UF 50V066445C11CAP MONO 100PF 100V 10% NPO061341C12CAP MONO 100PF 100V 10% NPO061341C13CAP ELECT 220UF 25V066507C14CAP MONO 100PF 100V 10% NPO061341C15CAP MONO .01UF 50V 20% X7R061345C16CAP ELECT 22UF 100V066574C17CAP ELECT 22UF 100V066574C18CAP MONO .01UF 50V 20% X7R061345C19CAP MONO .1UF 50V 20% Z5U061346C20CAP MONO 100PF 100V 10% NPO061341C21CAP MONO 100PF 100V 10% NPO061341C22CAP MONO .1UF 50V 20% Z5U061346C23CAP POLYPROP .047UF 10% 250VDC064364C24CAP MONO .1UF 50V 20% Z5U061346C25CAP ELECT 10UF 50V066445C26CAP ELECT 10UF 50V066445C27CAP MONO 100PF 100V 10% NPO061341C28CAP MONO 100PF 100V 10% NPO061341C29CAP ELECT 220UF 25V066507C30CAP MONO 100PF 100V 10% NPO061341C31CAP MONO .01UF 50V 20% X7R061345C32CAP ELECT 22UF 100V066574C33CAP ELECT 22UF 100V066574C34CAP MONO .01UF 50V 20% X7R061345C35CAP MONO .1UF 50V 20% Z5U061346C36CAP MONO 100PF 100V 10% NPO061341C37CAP MONO 100PF 100V 10% NPO061341C38CAP MONO .1UF 50V 20% Z5U061346C39CAP POLYPROP .047UF 10% 250VDC064364C40CAP MONO .1UF 50V 20% Z5U0613463440PARTS LIST contd.HEATSINK PCB 050280 (Contd.)Ref No. DescriptionPart No.Ref No. DescriptionPart No.D1DIODE SILICON070174D2DIODE SILICON070174D3DIODE SILICON070174D4DIODE SILICON070174D5DIODE SILICON070174D6DIODE SILICON070174D7DIODE SILICON070174D8DIODE SILICON070174D9DIODE SILICON070174D10DIODE SILICON070174D11DIODE SILICON070174GP1STANDOFF 6-32 X 1/4 MOUNT PCB112130GP2STANDOFF 6-32 X 1/4 MOUNT PCB112130J7 J8CONN 2 PIN MALE117213J2CONN 3 POS MALE LARGE FRCTN LK117293J5 J6CONN HEADER 2 PIN 0.156117404J1BLADE FASTON W/FEET117708J3 J4CONN 12 PIN FFC117720K1RELAY 12VDC 5A 250VAC TV-4087077L1 L2