McIntosh-C220-pre-sch 维修电路原理图.pdf

C220Performance Specifications . 2Notes . 2Rear Panel . 3Section Location . 3Block Diagram . 5 - 6Interconnection Diagram . 7 - 8Main Schematic and PCB . 9 - 18Display Schematic and PCB . 19 - 24Balanced/Data Sch and PCB. 25 - 30Pushbutton Sch and PCB . 31 - 32Headphone Sch and PCB . 33 - 34Parts List. 37 - 43Repacking Instructions . 45CONTENTSSERIAL NO. WS1001 And AboveC220TUBE PREAMPLIFIERSERVICE MANUALSerial Number WS1001 And AbovePRELIMINARYRadioFans.CN 收音机爱 好者资料库PERFORMANCE SPECIFICATIONS2Frequency Response+0, -0.5dB from 20Hz to 20,000HzTotal Harmonic Distortion0.08% from 20Hz to 20,000HzMain Output2.5V for rated inputMaximum Voltage Output8V RMS Unbalanced, 16V RMS BalancedSensitivity (for rated output)High Level, 450mV unbalanced, 900mV balancedPhono, 4.5mVSignal To Noise Ratio (A-Weighted)High Level, 90dB below rated outputPhono, 80dB below 10mV inputInput ImpedanceHigh Level, 22K ohmsPhono, 47K ohms; 65pFMaximum Input SignalHigh Level, 5V Unbalanced, 10V BalancedPhono, 50mV ( 1,000Hz)Output Impedance250 ohmsVoltage GainHigh Level to Tape Output: 0dBHigh Level to Main Output: 15dBPhono to Main Output: 55dBHeadphone Output Impedance16 ohms to 250 ohmsTube ComplimentPhono Circuitry: 2 - 12AX7AHigh Level Circuitry: 2 - 12AX7APower Requirements100 Volts, 50/60Hz at 75 watts110 Volts, 50/60Hz at 75 watts120 Volts, 50/60Hz at 75 watts220 Volts, 50/60Hz at 75 watts230 Volts, 50/60Hz at 75 watts240 Volts, 50/60Hz at 75 wattsNote: Refer to the rear panel of the C220 for thecorrect voltage.Overall DimensionsWidth is 17-1/2 inches (44.45cm)Height is 6 inches (15.24cm) including feetDepth is 18 inches (45.72cm) including the Front Panel,Knobs and CablesWeight21.1 pounds (9.59 kg) net, 37.5 pounds (17.05 kg) inshipping cartonShipping Carton DimensionsWidth is 26-1/2 inches (67.3cm)Depth is 24-1/4 inches (62.2cm)Height is 11-3/4 inches (29.9cm)1. The heavy notes on the schematic denote the primarysignal path.2. Unless otherwise noted, all voltages indicated on theschematics are measured under the following conditions:a. AC input at 120 volts, 50/60Hz.b. All voltages are +/-10% with respect to ground. Ahigh impedance (10 megaohm) voltmeter must be used.3. Unless otherwise specified: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 - Positiveb. Diodes - Cathodec. Others - Pin 15. WARNINGParts marked with the symbol have criticalcharacteristics. Use only replacement parts recom-mended by the manufacturer.NOTESRadioFans.CN 收音机爱 好者资料库C220REAR PANELSECTION LOCATIONSTOP VIEW WITH COVER REMOVED3NOTES4C220BLOCK DIAGRAM5678INTERCONNECTC220910MAIN 050329 SCH 1 OF 421112MAIN 050329 SCH 2 OF 42C2201314MAIN 050329 SCH 3 OF 421516MAIN 050329 SCH 4 OF 42C2201718MAIN 050329 PCB21920DISPLAY 050330 SCH 1 of 33C2202122DISPLAY 050330 SCH 2 of 332324DISPLAY 050330 SCH 3 of 3 and PCB3C2202526BALANCED / DATA 051331 SCH 1 of 242728BALANCED / DATA 050331 SCH 2 of 24C2202930BALANCED / DATA 050331 PCB43132PUSHBUTTON 051332 SCH and PCB5C2203334HEADPHONE 051333 SCH and PCB63536NOTESC22037PARTS LISTMAIN PCB 050329Ref No. DescriptionPart No.C1CAP ELECT 10UF 50V066445C2CAP MPF 0.1UF 630VDC064431C3CAP MONO 47PF 200V 10% NPO061340C4CAP MONO 47PF 200V 10% NPO061340C5CAP ELECT 22UF 100V066574C6CAP POLYPROP 1UF 20% 250VDC064433C8CAP ELECT 10UF 50V066445C7CAP ELECT 1UF 50V066510C9CAP ELECT 47UF 35V066446C10CAP MONO 47PF 200V 10% NPO061340C11CAP MONO 47PF 200V 10% NPO061340C12CAP MONO 1000PF 50V 10% NPO061344C13CAP MONO 1000PF 50V 10% NPO061344C14CAP MONO 1000PF 50V 10% NPO061344C15CAP MONO 1000PF 50V 10% NPO061344C16CAP ELECT 10UF 50V066445C17CAP ELECT 47UF 35V066446C18CAP DISC MONO .47UF 50V061320C19CAP MONO .1UF 50V 20% Z5U061346C20CAP MONO .1UF 50V 20% Z5U061346C21CAP ELECT 47UF 450V066497C22CAP ELECT 47UF 35V066446C23CAP ELECT 47UF 450V066497C24CAP ELECT 1UF 50V066510C25CAP MONO .1UF 50V 20% Z5U061346C26CAP ELECT 10UF 50V066445C28CAP MONO .1UF 50V 20% Z5U061346C29CAP ELECT 10UF 250V066493C30CAP ELECT 4700UF066443C31CAP MONO 220PF 200V 10% NPO061342C32CAP MONO 1000PF 50V 10% NPO061344C33CAP MONO 1000PF 50V 10% NPO061344C34CAP MONO 1000PF 50V 10% NPO061344C35CAP MONO 1000PF 50V 10% NPO061344C36CAP MPF 0.1UF 630VDC064431C37CAP ELECT 10UF 50V066445C39CAP POLYPROP 1UF 20% 250VDC064433C40CAP ELECT 1UF 50V066510C41CAP ELECT 47UF 35V066446C42CAP MPF 0.1UF 630VDC064431C43CAP ELECT 10UF 16V066580C44CAP MONO 220PF 200V 10% NPO061342C45CAP MONO 47PF 200V 10% NPO061340C46CAP POLYPROP 1UF 20% 250VDC064433C47CAP ELECT 1UF 50V066510C48CAP ELECT 100UF 25V066573C49CAP ELECT 10UF 16V066580C50CAP MONO .1UF 50V 20% Z5U061346C51CAP ELECT 100UF 25V066573C52CAP ELECT 10UF 16V066580C53CAP PF 0.001UF 5% 63VDC064453C54CAP MPF 0.0033UF 5% 63VDC064306C55CAP ELECT 10UF 16V066580C56CAP MPF 0.1UF 630VDC064431C57CAP ELECT 10UF 16V066580C58CAP MONO 47PF 200V 10% NPO061340C59CAP POLYPROP 1UF 20% 250VDC064433C60CAP ELECT 1UF 50V066510C61CAP ELECT 10UF 250V066493C62CAP ELECT 100UF 25V066573C63CAP ELECT 10UF 16V066580C64CAP ELECT 100UF 25V066573C65CAP ELECT 10UF 16V066580C66CAP PF 0.001UF 5% 63VDC064453C67CAP MPF 0.0033UF 5% 63VDC064306C68CAP ELECT 10UF 16V066580C69CAP ELECT 10UF 16V066580C70CAP MONO 100PF 100V 10% NPO061341C71CAP ELECT 10UF 16V066580C72CAP MONO .1UF 50V 20% Z5U061346C73CAP MONO .1UF 50V 20% Z5U061346C74CAP MONO 100PF 100V 10% NPO061341C75CAP ELECT 10UF 16V066580C76CAP MONO 100PF 100V 10% NPO061341C77CAP ELECT 10UF 16V066580C78CAP ELECT 10UF 16V066580C79CAP ELECT 10UF 16V066580C80CAP MONO 100PF 100V 10% NPO061341C81CAP ELECT 10UF 16V066580C82CAP MONO 100PF 100V 10% NPO061341C83CAP ELECT 10UF 16V066580C84CAP MONO 100PF 100V 10% NPO061341C85CAP ELECT 10UF 16V066580C86CAP ELECT 10UF 16V066580C87CAP MONO .1UF 50V 20% Z5U061346C88CAP ELECT 220UF 50V 20%066254C89CAP POLYPROP .047UF 10% 250VDC064364C90CAP ELECT 220UF 50V 20%066254C91CAP MONO .1UF 50V 20% Z5U061346C92CAP ELECT 1UF 50V066510C93CAP ELECT 2200UF 50V 20%066440C94CAP MONO .1UF 50V 20% Z5U061346C95CAP ELECT 10UF 50V066445C96CAP ELECT 2200UF 50V 20%066440C97CAP ELECT 10UF 50V066445C98CAP MONO .1UF 50V 20% Z5U061346C100CAP POLYPROP .047UF 10% 250VDC064364C102CAP ELECT 10UF 50V066445C103CAP MONO .1UF 50V 20% Z5U061346C104CAP MONO .1UF 50V 20% Z5U061346C105CAP MONO .1UF 50V 20% Z5U061346C106CAP POLY .047UF 10% 1000VDC064434C115CAP ELECT 47UF 35V066446C116CAP ELECT 10UF 50V066445C118CAP ELECT 10UF 50V066445C119CAP ELECT 10UF 50V066445C121CAP MONO .1UF 50V 20% Z5U061346C122CAP MONO .1UF 50V 20% Z5U0613462Ref No. DescriptionPart No.PARTS LIST cont38C123CAP ELECT 10UF 50V066445C125CAP MONO .1UF 50V 20% Z5U061346C126CAP MONO .1UF 50V 20% Z5U061346C127CAP ELECT 10UF 50V066445C128CAP ELECT 10UF 50V066445C129CAP ELECT 47UF 35V066446C130CAP ELECT 10UF 50V066445C132CAP ELECT 10UF 50V066445C133CAP ELECT 10UF 50V066445C134CAP MONO .1UF 50V 20% Z5U061346C135CAP MONO .1UF 50V 20% Z5U061346C136CAP ELECT 10UF 50V066445C145CAP ELECT 10UF 50V066445C146CAP ELECT 10UF 50V066445C147CAP ELECT 47UF 35V066446C148CAP ELECT 47UF 35V066446C149CAP MONO 220PF 200V 10% NPO061342C150CAP MONO .1UF 50V 20% Z5U061346C152CAP MONO .1UF 50V 20% Z5U061346C155CAP MONO .1UF 50V 20% Z5U061346C151CAP ELECT 10UF 50V066445C153CAP ELECT 10UF 50V066445C154CAP ELECT 10UF 50V066445C156CAP ELECT 10UF 50V066445D1DIODE SIL 400 PIV 1.5A070031D2DIODE SIL 400 PIV 1.5A070031D3DIODE SIL 400 PIV 1.5A070031D4DIODE SILICON070174D5DIODE SIL 400 PIV 1.5A070031D6DIODE SIL 400 PIV 1.5A070031D7DIODE SIL 400 PIV 1.5A070031D8DIODE SIL 400 PIV 1.5A070031D9DIODE SIL 400 PIV 1.5A070031D10DIODE SILICON070174D11DIODE SIL 400 PIV 1.5A070031D12DIODE SIL 400 PIV 1.5A070031D13DIODE SIL 400 PIV 1.5A070031D15DIODE SIL 400 PIV 1.5A070031D14DIODE SILICON070174D16DIODE SILICON070174DS1LED GREEN 3MM HI INTENSITY058172DS2LED GREEN 3MM HI INTENSITY058172DS3LED GREEN 3MM HI INTENSITY058172DS4LED GREEN 3MM HI INTENSITY058172F2FUSE 2A 250V SLO-BLO 5X20 IEC089088(F2)HOLDER FUSE 5X20MM PCB MOUNT178159F4FUSE 1/8A SLO-BLO 5X20 IEC089094(F4)HOLDER FUSE 5X20MM PCB MOUNT178159F5FUSE 0.5A SLO-BLO 5X20 IEC089092(F5)HOLDER FUSE 5X20MM PCB MOUNT178159GP1BRACKET PCB CARD MOUNTING003611GP2BRACKET PCB CARD MOUNTING003611J1CONN FFC 18PIN117765J2JACK PHONO 6P GOLD PLATED117449J3JACK PHONO 8P GOLD PLATED117455J4CONN FFC 18PIN117765J5CONN FFC 18PIN117765J6JACK PHONO 8P GOLD PLATED117455J7CONN 12 PIN FFC117720J8CONN FFC 18PIN117765J9HEADER 9 CIRCUIT POST NATURAL117724J10BLADE FASTON W/FEET117708J11BLADE FASTON W/FEET117708J12CONN PCB MOUNT POWER RED117719J13CONN PCB MOUNT POWER RED117719J14CONN PCB MOUNT POWER RED117719J15CONN PCB MOUNT POWER RED117719J16JACK PHONO GOLD PJ261G117436J41CONN FFC 18PIN117765K1RELAY REED SPST-NO 5V 1.2A087078K2RELAY 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 FORM 1C 5V 125 OHM087056K18RELAY REED FORM 1C 5V 125 OHM087056K20RELAY 24VDC 5A 277VAC087057K21RELAY REED SPST-NO 5V 1.2A087078K22RELAY REED SPST-NO 5V 1.2A087078K23RELAY REED SPST-NO 5V 1.2A087078K24RELAY REED SPST-NO 5V 1.2A087078K25RELAY REED SPST-NO 5V 1.2A087078K26RELAY REED SPST-NO 5V 1.2A087078K27RELAY REED SPST-NO 5V 1.2A087078Q1TRANSISTOR N JFET132318Q2TRANSISTOR N JFET132318Q3TRANSISTOR N JFET132318Q4TRANSISTOR N JFET132318Q5TRANSISTOR PNP SILICON132304Q6TRANSISTOR PNP SILICON132304Q7TRANSISTOR PNP SILICON132304Q8TRANSISTOR PNP SILICON132304Q9TRANSISTOR PNP SILICON132304Q10TRANSISTOR PNP SILICON132304Q11TRANSISTOR PNP SILICON132304Q12TRANSISTOR PNP SILICON132304Q13TRANSISTOR N JFET132318MAIN PCB 050329 (contd)Ref No. DescriptionPart No.Ref No. DescriptionPart No.C220PARTS LIST contMCD20139Q14TRANSISTOR N JFET132318Q15TRANSISTOR N JFET132318Q16TRANSISTOR N JFET132318Q17TRANSISTOR NPN POWER132295(Q17)HEATSINK TO-220080017Q19TRANSISTOR PNP SILICON132304Q29TRANSISTOR PNP SILICON132304Q21TRANSISTOR NPN POWER132295Q22TRANSISTOR NPN 2A 50V132302Q23TRANSISTOR NPN 2A 50V132302Q18TRANSISTOR NPN SILICON132317Q24TRANSISTOR PNP132326Q25TRANSISTOR PNP132326Q26TRANSISTOR NPN SILICON132317Q27TRANSISTOR PNP132326Q28TRANSISTOR N JFET132318Q30TRANSISTOR N JFET132318Q31TRANSISTOR PNP132326Q32TRANSISTOR NPN SILICON132317Q20TRANSISTOR NPN132325R1RES MF 20K 1% 1/4W144524R2RES MF 150K 1% 1/4W144627R3RES MF 221K 1% 1/4W144629R4RES MF 200K 1% 1/4W144531R5RES MF 2.74K 1% 1/4W144587R6RES MF 2.21M 1% 1/4W144576R7RES MF 47.5K 1% 1/4W144526R8RES MF 33.2K 1% 1/4W144694R9RES MF 24.9K 1% 1/4W144439R10RES 16.5K 1% 1/4W144103R11RES MF 100K 1% 1/4W144528R12RES MF 1M 1% 1/4W144577R13RES MF 10M 1% 1/4W144575R14RES MF 10M 1% 1/4W144575R15RES MF 10M 1% 1/4W144575R16RES MF 10M 1% 1/4W144575R17RES MF 1.5K 1% 1/4W144539R18RES MF 3.32K 1% 1/4W144518R19RES MF 10K 1% 1/4W144504R20RES MF 267K 1% 1/4W144532R21RES MF 22.1K 1% 1/4W144564R22RES MF 12.1K 1% 1/4W144550R23RES MF 15K 1% 1/4W144623R24RES MF 267K 1% 1/4W144532R25RES MF 1M 1% 1/4W144577R26RES MF 267K 1% 1/4W144532R27RES MF 1M 1% 1/4W144577R28RES MF 267K 1% 1/4W144532R29RES MF 1M 1% 1/4W144577R30RES MF 267K 1% 1/4W144532R31RES MF 1M 1% 1/4W144577R32RES MF 267K 1% 1/4W144532R33RES MO 100K 5% 2W144698R34RES MF 10K 1% 1/4W144504R35RES MF 1.5K 1% 1/4W144539R36RES MF 267K 1% 1/4W144532R37RES MF 12.1K 1% 1/4W144550R38RES MF 267K 1% 1/4W144532R39RES MF 267K 1% 1/4W144532R40RES MF 267K 1% 1/4W144532R41RES MF 267K 1% 1/4W144532R42RES MF 1K 1% 1/4W144513R43RES MF 1K 1% 1/4W144513R44RES MF 1K 1% 1/4W144513R45RES MF 1M 1% 1/4W144577R46RES MF 1M 1% 1/4W144577R47RES MF 221K 1% 1/4W144629R48RES MF 200K 1% 1/4W144531R49RES MF 1M 1% 1/4W144577R50RES MF 1M 1% 1/4W144577R51RES MF 3.32K 1% 1/4W144518R52RES MF 2.74K 1% 1/4W144587R53RES MF 20K 1% 1/4W144524R54RES MF 1K 1% 1/4W144513R55RES MF 150K 1% 1/4W144627R56RES MF 1M 1% 1/4W144577R57RES MF 1.5K 1% 1/4W144539R58RES MF 3.32K 1% 1/4W144518R59RES MF 47.5K 1% 1/4W144526R60RES MF 33.2K 1% 1/4W144694R61RES MF 2.21M 1% 1/4W144576R62RES MF 24.9K 1% 1/4W144439R63RES 16.5K 1% 1/4W144103R64RES MF 22.1K 1% 1/4W144564R65RES MF 10M 1% 1/4W144575R66RES MF 10M 1% 1/4W144575R67RES MF 10M 1% 1/4W144575R68RES MF 10M 1% 1/4W144575R69RES MF 15K 1% 1/4W144623R70RES MF 221K 1% 1/4W144629R71RES MF 200K 1% 1/4W144531R72RES MF 1K 1% 1/4W144513R73RES MF 1K 1% 1/4W144513R74RES MF 1K 1% 1/4W144513R75RES NETWORK 2 X 220K ISO144678R76RES MF 1M 1% 1/4W144577R77RES MF 47.5K 1% 1/4W144526R78RES MF 1.5K 1% 1/4W144539R79RES MF 953 OHM 1% 1/4W144473R80RES MF 22.1K 1% 1/4W144564R81RES MF 221K 1% 1/4W144629R82RES MF 1.82K 1% 1/4W144582R83RES MF 75K 1% 1/4W144156R84RES MF 1M 1% 1/4W144577R85RES NETWORK 2 X 220K ISO144678R86RES MF 221K 1% 1/4W144629R87RES MF 200K 1% 1/4W144531R88RES MF 1K 1% 1/4W144513MAIN PCB 050329 (contd)Ref No. DescriptionPart No.Ref No. DescriptionPart No.PARTS LIST cont40R89RES NETWORK 2 X 220K ISO144678R90RES MF 1M 1% 1/4W144577R91RES MF 47.5K 1% 1/4W144526R92RES MF 1.5K 1% 1/4W144539R93RES MF 953 OHM 1% 1/4W144473R94RES MF 22.1K 1% 1/4W144564R95RES MF 221K 1% 1/4W144629R96RES MF 1.82K 1% 1/4W144582R97RES MF 75K 1% 1/4W144156R98RES MF 1M 1% 1/4W144577R99RES MF 1K 1% 1/4W144513R100RES NETWORK 2 X 220K ISO144678R101RES MF 40.2K 1% 1/4W144525R102RES MF 221 OHM 1% 1/4W144559R103RES NETWORK 2 X 220K ISO144678R104RES MF 40.2K 1% 1/4W144525R105RES MF 20K 1% 1/4W144524R106RES MF 20K 1% 1/4W144524R107RES NETWORK 2 X 220K ISO144678R108RES MF 1K 1% 1/4W144513R109RES MF 40.2K 1% 1/4W144525R110RES MF 221 OHM 1% 1/4W144559R111RES MF 40.2K 1% 1/4W144525R112RES NETWORK 2 X 220K ISO144678R113RES MF 20K 1% 1/4W144524R114RES MF 20K 1% 1/4W144524R115RES NETWORK 2 X 220K ISO144678R116RES MF 10K 1% 1/4W144504R117RES MF 10 OHM 1% 1/4W144553R118RES MF 10K 1% 1/4W144504R119RES MF 365 OHM 1% 1/4W144505R120RES MF 3.32K 1% 1/4W144518R121RES MF 22.1 OHM 1% 1/4W144554R122RES MF 200K 1% 1/4W144531R123RES MF 3.32K 1% 1/4W144518R124RES MF 332 OHM 1% 1/4W144646R125RES MF 8.25K 1% 1/4W144549R126RES MF 100K 1% 1/4W144528R127RES MF 221 OHM 1% 1/4W144559R128RES MF 1M 1% 1/4W144577R129RES MF 200K 1% 1/4W144531R130RES MF 100K 1% 1/4W144528R131RES MF 475 OHM 1% 1/4W144509R132RES MF 1K 1% 1/4W144513R133RES MF 1K 1% 1/4W144513R134RES MF 100K 1% 1/4W144528R135RES MF 267K 1% 1/4W144532R136RES MF 3.32K 1% 1/4W144518R137RES MF 1K 1% 1/4W144513R138RES MF 10K 1% 1/4W144504R139RES MF 10K 1% 1/4W144504R140RES MF 33.2K 1% 1/4W144694R141RES MF 200K 1% 1/4W144531R142RES MF 221 OHM 1% 1/4W144559R143RES MF 100K 1% 1/4W144528R144RES MF 33.2K 1% 1/4W144694R145RES MF 221 OHM 1% 1/4W144559R146RES MF 100K 1% 1/4W144528R147RES MF 1M 1% 1/4W144577R148RES MF 221 OHM 1% 1/4W144559R149RES MF 20K 1% 1/4W144524R150RES MF 100K 1% 1/4W144528R151RES MF 22.1K 1% 1/4W144564R1