McIntosh-C46-pre-sm 维修电路原理图.pdf

SERVICE MANUALPerformance Specifications . 2Notes . 2Rear View and Section Location . 3Block Diagram . 4 - 6Interconnection Diagram . 7 - 8Main Schematic and PCB. 9 - 20Balanced Schematic and PCB . 21 - 22Display Schematic and PCB . 23 - 28Tone Schematic and PCB . 29 - 33Data Schematic and PCB. 34 - 35Pushbutton Schematic and PCB . 35 - 36Parts List . 37 - 40Exploded View and Parts Lists . 41 - 43Repacking Instructions . 45CONTENTSAUDIOCONTROL CENTERRadioFans.CN 收音机爱 好者资料库PERFORMANCE SPECIFICATIONS21. 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.NOTESFrequency Response+0, -0/5dB from 20Hz to 20,000HsTotal Harmonic Distortion0.002% maximum from 20Hz to 20,000HzSignal To Noise RatioPhono: 86dB (A Weighted)High Level: 97dB (A Weighted)Rated Output VoltageUnbalanced Main and Outputs 1 and 2: 2.5VrmsBalanced Main and Outputs 1 and 2: 5VrmsMaximum Voltage OutputMain and Outputs 1 and 2: 10VrmsOutput Impedance240 ohmsInput ImpedancePhono: 47k ohms, 65pfHigh Level: 22k ohmsSensitivityPhono: 4.5mV for rated outputHigh Level: 450mV for rated outputMaximum Input SignalPhono: 50mVHigh Level: 5VVoltage GainPhono to Tape Out: 40dBHigh Level to Tape Out: 0dBHigh Level to Main Out:15dBPower Requirements100 Volts, 50/60Hz, 50 Watts110 Volts, 50/60Hz, 50 Watts120 Volts, 50/60Hz, 50 Watts220 Volts, 50/60Hz, 50 Watts230 Volts, 50/60Hz, 50 Watts240 Volts, 50/60Hz, 50 WattsNote: Refer to the rear panel of the C46 for the correct voltage.DimensionsWidth: 17-1/2 inches (44.5cm)Height: 5-3/8 inches (13.7cm)Depth: 17-1/2 inches (44.5cm), including clearance forconnectorsRadioFans.CN 收音机爱 好者资料库REAR VIEW3TOP VIEW WITH COVER REMOVEDSECTION LOCATIONC46BLOCK DIAGRAM456BLOCK DIAGRAM contC4678INTERCONNECT91110C46MAIN 049784 SH 1 OF 42121413MAIN 049784 SH 2 OF 42151716MAIN 049784 SH 3 0F 4C462182019MAIN 049784 SH 4 OF 42BALANCED 04918932122C46DISPLAY 049783 SH 1 OF 242324DISPLAY 049783 SH 2 OF 242526C46DISPLAY 04978342728TONE 049786C465293130323433TONE 0497865DATA 04920063536DATA 0492006PUSHBUTTON 0497857C463738PARTS LISTRef No.DescriptionPart No.INTERCONNECTS1SWITCH17102600T1POWER TRANSFORMER04952700049784 MAIN PCBC1 C77 C78220PF 5% 100V NPO06127300C2 C6 C9 C11 C12 C13 C15 C16 C20MONO CAP 0.1MF 20% 50V06127700C4 C7 C17 C21 C31 C35 C51 C52 C5722PF 10% 100V CAPACITOR06128200C8 C10 C22 C23 C66 C67 C68 C69MONO CAP: 100PF, 5%, 100V, NPO06127500C24 C25 C26 C27 C28 C29 C30 C32MONO CAP 0.1MF 20% 50V06127700C33 C34 C37 C46 C48 C49 C50MONO CAP 0.1MF 20% 50V06127700C36 C38 C39 C40 C41 C42 C43 C44CAP MONO 330PF CAP06128400C45 C98CAP MC 47PF 100V +/-5% NPO06128000C53 C54 C55 C56 C58 C59 C60 C61MONO CAP 0.1MF 20% 50V06127700C62 C63 C65 C71 C72 C73 C75 C86MONO CAP 0.1MF 20% 50V06127700C64 C70 C74 C76 C81 C85 C104 C10522PF 10% 100V CAPACITOR06128200C84 C87 C88 C89 C91 C97 C187 C188MONO CAP: 100PF, 5%, 100V, NPO06127500C90 C93 C94 C99 C100 C101 C102MONO CAP 0.1MF 20% 50V06127700C106 C107 C108 C110 C113 C114MONO CAP 0.1MF 20% 50V06127700C109 C193 C194 C223 C22422PF 10% 100V CAPACITOR06128200C111 C112MON CER 0.001MF 100V NPO06126200C115 C116 C117 C118 C119 C121ELECT CAP 10MF, 50V06644500C120 C127 C128 C129 C132 C133CAP ELECT 10UF 16V (4X5 CASE)06638200C122 C123 C124 C125 C126 C130ELECT CAP 10MF, 50V06644500C131 C136 C142 C143 C145 C146ELECT CAP 10MF, 50V06644500C134 C135 C137 C138 C139 C140CAP ELECT 10UF 16V (4X5 CASE)06638200C141 C144 C148 C150 C153 C154CAP ELECT 10UF 16V (4X5 CASE)06638200C147 C149 C151 C152 C166 C169ELECT CAP 10MF, 50V06644500C155 C156 C157 C158 C159 C160CAP ELECT 10UF 16V (4X5 CASE)06638200C161 C162 C163 C164 C165 C167CAP ELECT 10UF 16V (4X5 CASE)06638200C168 C170 C171 C172CAP ELECT 10UF 16V (4X5 CASE)06638200C173 C174 C175 C176 C177 C178CAP ELECT 47UF 16V06621500C179 C180CAP ELECT 47UF 16V06621500C183 C184 C185 C186 C200 C201ELECT CAP 10MF, 50V06644500C189 C190 C191 C192MONO CAP: 100PF, 5%, 100V, NPO06127500C195 C196 C197 C198 C199CAP ELECT 220UF 16V06633000C202 C203 C204 C213 C214 C215 C216ELECT CAP 10MF, 50V06644500C205 C206POLYPROPY CAP.047MF 250V06436400C207 C209CAP POLYPROPYLENE .0348UF 1%06441300C208 C210CAP POLYPROPYLENE .01UF 1%06441400C211 C212 C229CAP ELECT 3300UF 35V06636000C217 C218CAP ELECT 470UF 25V06633400C219 C220 C221 C222MONO CAP 0.1MF 20% 50V06127700D1 D2 D3 D4 D17 D18 D19 D20SIL DIODE: 400 PIV 1.5A07003100D5 D7 D8 D9 D10 D14 D15 D16SILICON DIODE 1N414807004700F3FUSE 2A SLO-BLO 5X2008908900GP1 GP2CARD MOUNTING BRACKET00361100IC2IC NAND SCHMIT 2-IN X 413319200IC3IC OPERATIONAL AMPLIFIER13318900IC4 IC5STEREO DIGITAL VOLUME CONTROL13333100IC6 IC7 IC8 IC9 IC10 IC11 IC12 IC13 IC14NE5534AN OP AMP LOW NOISE13306700IC15 IC16 IC17 IC18 IC19 IC20 IC21 IC22NE5534AN OP AMP LOW NOISE13306700IC23 IC24NE5534AN OP AMP LOW NOISE13306700IC27 IC39 IC42 IC43 IC44NE5534AN OP AMP LOW NOISE13306700IC28IC REGULATOR 5V13325000IC29-5V REGULATOR13325300IC30NEG 24V REGULATOR13330600IC31IC +5V REGULATOR13310800IC32 IC33 IC34 IC35IC SHFT REG SER-PAR13318600IC36 IC37 IC38OCTAL DARLINGTON TRANS ARRAY13325800IC40VOLTAGE REGULATOR 18 VOLT13304400IC41IC REGULATOR 18 VOLT13304500J3 J4 J5 J6PHONO JACK 8P, GOLD PLATED11745500J7PJ261G PHON JACK, GOLD11743600J14 J15 J18 J19 J20 J25 J26 J27 J29 J30FASTON BLADE W/FEET11770800J17GOLD ”F” CONNECTOR11766100J31 J32 J33 J34 J35 J36 J37 J38 J40 J42FASTON BLADE W/FEET11770800J43 J44 J45FASTON BLADE W/FEET11770800K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11REED RELAY: FORM 1A,5V, 500 OHMS08705000K12 K13 K14 K15 K16 K17 K18 K19 K20REED RELAY: FORM 1A, 5V, 500 OHMS08705000K21 K22 K23 K24 K25 K26 K27 K28 K29REED RELAY: FORM 1A, 5V, 500 OHMS08705000K30 K31 K32 K33 K34 K35 K36 K37 K38REED RELAY: FORM 1A, 5V, 500 OHMS08705000K39 K40 K41 K42 K43REED RELAY: FORM 1A, 5V, 500 OHMS08705000K44 K45 K46 K47REED RELAY FORM 1C, 5V 125OHM08705600Q3TRANSISTOR NPN MPS412413222300Q6 Q24TRANSISTOR PNP DARLINGTN13218200Q7 Q8 Q9 Q10 Q11 Q12 Q20 Q22N. CHANNEL FET13222200Q13 Q14 Q15 Q16 Q17 Q18 Q19 Q21TRANSISTOR PNP SI MPS412613222400R1 R2 R3 R4 R5 R6 R7 R8 R111 R112RES NETWORK, 2X220K, ISO14426200R10 R13 R19 R27 R29 R34 R39 R66 R95METAL FILM RES: 267K 1% 1/4W14411800R11 R110MF 6.81K 1% 1/4W14429700R15 R20 R31 R35 R88 R89 R90 R96 R129RES MF 2.21 OHM 1/4W 1%14437800R16 R21 R24 R32 R36 R38 R62 R84 R85RES MF 10K 1% 1/4W14405300R18 R42 R130 R149 R150 R164 R170RES MF 100K 1% 1/4W14411300R22 R37METAL FILM RES: 11K 1% 1/4W14410100R23 R177 R186 R195 R262 R271METAL FILM RES: 10 OHMS 1% 1/4W14415700R30 R121 R151 R156 R163 R178 R179METAL FILM RES 1K 1% 1/4W14409000R43 R44 R72 R251RES MF 3.36K .5% 1/4W14440000R45 R48 R68 R76 R78 R83 R104 R106METAL FILM RES 10M 1% 1/4W14426400R46 R52 R71 R101METAL FILM RES 5.36K .5% 1/4W14439900R47 R51 R70 R82METAL FILM RES 3.79K .5% 1/4W14439800R49 R50 R69 R81METAL FILM RES 2.67K .5% (SEI)14439700R53 R64 R87 R92RES MF 6.49K .5% 1/4W14440100R54 R57 R58 R59 R65 R100 R102 R107METAL FILM RES 200K 1% 1/4W14411700R55 R60 R61 R67 R73 R74 R75 R109 R153METAL FILM RES 1M 1/4W14426900R56 R80 R103 R108METAL FILM RES 1.91K .5% 1/4W14439500R63 R172 R224 R244 R246RES MF 47.5K 1% 1/4W14410800R77 R79 R97 R136RES MF 20K 1% 1/4W14410400R86 R91 R93 R94 R98 R180 R183 R206RES MF 10K 1% 1/4W14405300R99 R105 R138 R168 R207METAL FILM RES: 267K 1% 1/4W14411800R113 R159 R174 R182 R185 R201 R202RES MF 221 OHMS 1% 1/4W14417200R114 R211METAL FILM RES 8.25K 1% 1/4W14415300R116 R123 R124RES NETWORK, 2X220K, ISO14426200R117 R125RES MF 475K 1% 1/4W14436400R118 R221RES MF 89.8K 1/4W 0.5%14437700R128RES METAL FILM 4.75M 1/4W 1%14437900R131 R162 R169 R205METL FILM RES 49.9 OHM 1/4W 1%14417500R133 R146MF 2.21K 1% 1/4W14429800R139 R142 R143 R144 R145 R147 R148RES MF 2.21 OHM 1/4W 1%14437800R152 R175METAL FILM RES 100 OHM 1% 1/4W14419600R154METAL FILM RES 27.4K 1% 1/4W14414100R157METAL FILM RES: 31.6K 1% 1/4W14414800R165 R166 R167 R190 R191 R208 R236RES MF 2.21 OHM 1/4W 1%14437800R171 R173RES MF 100K 1% 1/4W14411300R187 R188 R247 R249 R263 R268METAL FILM RES: 33K 1% 1/4W14401500R192 R193 R194 R196 R198 R199 R200METAL FILM RES 1K 1% 1/4W14409000R203 R204 R209 R210 R216 R217 R218RES MF 221 OHMS 1% 1/4W14417200R212 R213RES NETWORK ISOLATED 2X22K14436600R219 R230RES MF 7.5K OHM 1/4W 0.5%14437600R220 R222 R223 R227 R259 R274 R275RES MF 221 OHMS 1% 1/4W14417200R225 R22995.3 OHMS 1% 1/4W MF14422000R226 R228 R232METAL FILM RES 1K 1% 1/4W14409000R235 R239METAL FILM RES. 20.0 OHM 1/4W14417400R240 R241 R242 R252 R253 R254 R255RES MF 2.21 OHM 1/4W 1%14437800R245RES MF 10K 1% 1/4W14405300R256METAL FILM RES 22.1K 1% 1/4W14418700R257 R270 R272 R273 R282 R283RES MF 2.21 OHM 1/4W 1%14437800R267METAL FILM RES: 73.2K 1% 1/4W14413600R276 R281METAL FILM RES 1.65K 1% 1/4W14409300R277 R278 R279 R280MF 4.32K 1% 1/4W14430300S1SLIDE SWITCH14805900123940049189 BALANCED PCBD1 D2SILICON DIODE 1N4148 T&R07004700J1-FLEXSTRIP 5 PIN 5.7517124100J2-CABLE FLEXIBLE 8-PIN 5-IN17093000J3 J4 J5 J6 J7 J8XLR RECEPTACLE MALE11766900J9 J10XLR RECEPTACLE FEMALE11766800K1 K2 K3 K4 K5 K6 K7 K8REED RELAY: FORM 1A,5V, 500 OHMS08705000R1 R2 R3 R4 R5 R6 R7 R8 R9RES MF 221 OHMS 1% 1/4W14417200R10 R11 R12RES MF 221 OHMS 1% 1/4W14417200049783 DISPLAY PCBC1 C9 C17CAP ELECT 10UF 50V06644500C2CAP MONO 220PF 200V 10% NPO06130100C3 C4 C5 C11 C15 C16CAP MONO .1UF 50V 20% Z5U06130500C6 C14CAP ELECT 47UF 35V06644600C8CAP MONO 100PF 100V 10% NPO06130000C9CAP ELECT 1UF 50V06651000C12CAP ELECT 47UF 16V 6.3X5 CASE06638000D1 D2DIODE SILICON07004700D4DIODE ZENER 6.2V 5% 500MW07008500DS1 DS2LED SQUARE RED05810900DS3 DS4 DS5 DS6 DS7 DS8 DS9 DS10LED LAMP RED07009300DS11LED LAMP RED07009300DS12 DS13 DS14 DS15 DS16 DS17 DS18LED GRN 5MM HI-INTENSITY05816500DS19DISPLAY 12 CHARACTER05815000F1FUSE T 0.4A 250V08910800F1HOLDER FUSE 5X20MM PCB MOUNT17815900J1CABLE FLEXSTRIP 3 PIN 7.25IN17124200J1- J1- J1-CONN 3-PIN RIGHT ANGLE11767000J3CONN 12 PIN FFC11772000J7CABLE FLEXSTRIP 12 PIN 7.25IN17123700J12 J13 J14 J15 J16BLADE FASTON W/FEET11770800K1RELAY REED FORM 1A 5V 500 OHMS08705000MT1SENSOR IR 38KHZ12104600Q2 Q3TRANSISTOR NPN 2K/REEL13217100R1RES MF 1K 1% 1/4W14409000R2RES MF 100K 1% 1/4W14411300R3 R4RES NETWORK 9X-1-22314423800R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15RES MF 324 OHM 1% 1/4W14433800R16 R24RES MF 10K 1% 1/4W14405300R17 R30 R32RES MF 10 OHM 1% 1/4W14415700R18RES WW 100 OHM 10% 2W BWH13913400R19RES NET 10K X814425300R20RES MF 6.81K 1% 1/4W14429700R21 R23 R25 R27 R35 R36 R37 R38RES MF 100 OHM 1% 1/4W14419600R22RES MF 47.5K 1% 1/4W14410800R33RES MF 4.99K 1% 1/4W14409800R34RES MF 2.21K 1% 1/4W14429800S1ENCODER OPTICAL ROTARY14624600S2 S3 S4SWITCH ROT PULSE14624900U1 U2IC SHFT REG SER-PAR13318600U1 U2SOCKET IC DIP-16 PIN DUAL17809100U3IC SUPERVISOR WITH EEPROM13346800U3SOCKET IC 8-POS17809600U4IC PROGRAMMED C46 V1.0013347500U4SOCKET IC 40-PIN17813300U7IC DRVR VFD 12CHAR X 16SEG QFP13344600Y1RESONATOR CERAMIC 12.0MHZ W/CAP 18005900049786 TONE PCBC1 C2 C5 C6CAP ELECT 4.7UF 50V06651200C3 C4 C25 C26 C29 C30CAP MPF 0.1UF 5% 63VDC06432500C7 C8CAP MPF 0.047UF 5% 63VDC06432000C9 C10CAP ELECT 2.2UF 50V06651100C11 C12 C15 C16CAP MPF 0.022UF 5% 63VDC06431600C13 C14CAP ELECT 1UF 50V06651000C17 C18CAP MPF 0.47UF 5% 50/63VDC06433300C19 C20 C23 C24CAP MPF 0.0047UF 5% 63VDC06430800C21 C22 C33 C34 C39 C40CAP MPF 0.22UF 5% 63VDC06432900C27 C28CAP MPF 0.0022UF 5% 63VDC06430400C31 C32 C41 C42CAP PF 470PF 5% 160VDC06429600C35 C36 C37 C38CAP ELECT 47UF 35V06644600C43 C44CAP MONO 100PF 100V 10% NPO06130000C45 C46CAP MONO 22PF 200V 10% NPO06129800C47 C48 C51 C52CAP MONO .1UF 50V 20% Z5U06130500C49 C50CAP ELECT 10UF 50V06644500D1DIODE SILICON07004700J1CABLE FLEXSTRIP 7PIN 10IN17144300J2CONN 3-PIN RIGHT ANGLE11767000K1 K2 K3 K4RELAY REED FORM 1A 5V 500 OHMS08705000R1 R6 R11 R16 R21 R26 R31 R36POT EQUAL13445700R2 R3 R7 R8 R12 R13 R17 R18 R22 R23RES MF 681 OHM 1% 1/4W14419500R4 R5RES MF 200K 1% 1/4W14411700R9 R10RES MF 137K 1/4W14411500R14 R15RES MF 165K 1% 1/4W14411600R19 R20RES MF 75K 1% 1/4W14415600R24 R25RES MF 187K 1% 1/4W14440600R27 R28 R32 R33 R37 R38RES MF 681 OHM 1% 1/4W14419500R29 R30 R47 R48RES MF 100K 1% 1/4W14411300R34 R35RES MF 127K 1% 1/4W14440500R39 R40RES MF 47.5K 1% 1/4W14410800R41 R42 R43 R44RES MF 475K 1% 1/4W14436400R45 R46RES MF 40.2K 1% 1/4W14410700R49 R50 R52 R54RES MF 3.32K 1% 1/4W14409500R51 R53 R55 R56RES MF 10 OHM 1% 1/4W14415700U1 U2 U3 U4 U5 U6 U7 U8IC OP AMP 4558H13302800U9 U10NE5534AN OP AMP LOW NOISE13306700049200 DATA PCBC4 C5MONO CAP 0.1MF 20% 50V06127700D1SILICON DIODE 1N4148 T&R07004700IC1 IC2IC AND 2 INPUT X 413317500IC3LB1720 8 LN DRIVER ARRAY13318000IC4IC SHFT REG SER-PAR13318600J1-FLEXSTRIP 9 PIN 517123900J2 J3 J4 J5 J6 J7HEADPHONE JACK DUAL BLACK 1/811754900R1 R3 R7METAL FILM RES 1K 1% 1/4W14409000R2RES METAL FILM 4.75M 1/4W 1%14437900R4 R8 R9 R10 R11 R12 R13 R14METAL FILM RES 100 OHM 1% 1/4W14419600R5 R6 R15 R16 R17 R18 R19 R22RESISTOR MF 182 OHM 1/4W 1%14427300R20 R21METAL FILM RES 100 OHM 1% 1/4W14419600049785 PUSHBUTTON PCBJ1CONN 12 PIN FFC11772000J2JACK PHONO 1/8 STEREO11746200S1 S2 S3 S4 S5 S6 S7 S8 S9 S10SWITCH TACT15005800PARTS LIST contRef No.DescriptionPart No.4567C4634142EXPLODED VIEW43EXPLODED VIEW PARTS LIST1016484GLASS2171026CABL ASSY PWR SW3017531PUSHBUTTON ASSY RED4017517PUSHBUTTON ASSY BLK5017736BEZEL6078033O-RING7090265KNOB 34mm NO INDEX8090259KNOB 25.5 mm NO INDEX9090269KNOB 16.5mm INDEX10104017WASHER FELT BLK 3/4 X 1/4 X 1/1611104073WASHER FELT 1/4 X 5/8 MPI-412094360TAPE FOAM 1/2 X 1/213004946BRACKET EXTRUSION14018611ENDCAP 5”15101042SCREW TS 4-40 X 1/2 SLOT FILL16018605EXTRUSION BOTTOM17100149SCREW MACH 8-32 X 1/4 FL U/H ST18098113CORD DIAL .027 BLACK BRAID SILK19094016TAPE FOAM 1/4 X 1/820018587EXTRUSION TOP21092439FILTER FRONT PANEL22049785ASSY PCB PUSHBUTTON23005276SUBPANEL24101054SCREW TAPTITE 6-322 X 1/4 PH PN BLK25102045NUT KEP 6-22 SPECIAL26049783ASSY PCB DISPLAY27021030SPACER 6 X 1/428110004NUT CONTROL M7 X .75 HEX29104013WASHER LOCK 5/16 X .435 X .00230017901TITLE/PUSHBUTTON BACKLIGHT31049786ASSY PCB TONE32004945CHASSIS TRAY33005273PCB SHIELD34102001NUT KEP 4-40 CADMIUM PLATE35049527TRANSFORMER POT36004943SIDE PANEL RIGHT37004942SIDE PANEL LEFT38049784ASSY PCB MAIN39017775SHIELD PCB MAIN40114072RIVET NYLON POP-IN41049189ASSY PCB BALANCED42049200ASSY PCB DATA43005277REAR PANEL44117711RECEPTACLE AC W/LINE FILTER45102020NUT MACH 6-32 SELF-LOCK46084112POST GROUND GOLD47100250SCREW MACH SEMS 6-32 X 1/4 PH PN48101109SCREW TAP 6-32 X 5/16 PH PN TYPE A49101114SCREW SM 4-24 X 1/2 PH PN TYPE A50101197SCREW HI-LO 4-24 X 3/8 PH RD BLK51004860BOTTOM COVER52017218FOOT PLA