McIntosh-C46-pre-sm维修电路原理图.pdf

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1、SERVICE MANUAL Performance Specifications . 2 Notes . 2 Rear View and Section Location . 3 Block Diagram . 4 - 6 Interconnection Diagram . 7 - 8 Main Schematic and PCB. 9 - 20 Balanced Schematic and PCB . 21 - 22 Display Schematic and PCB . 23 - 28 Tone Schematic and PCB . 29 - 33 Data Schematic and

2、 PCB. 34 - 35 Pushbutton Schematic and PCB . 35 - 36 Parts List . 37 - 40 Exploded View and Parts Lists . 41 - 43 Repacking Instructions . 45 CONTENTS AUDIO CONTROL CENTER RadioFans.CN 收音机爱好者资料库 PERFORMANCE SPECIFICATIONS 2 1. The heavy notes on the schematic denote the primary signal path. 2. Unle

3、ss otherwise noted, all voltages indicated on the schematics are measured under the following conditions: a. AC input at 120 volts, 50/60Hz. b. All voltages are +/-10% with respect to ground. A high impedance (10 megaohm) voltmeter must be used. 3. Unless otherwise specified: a. Resistor values are

4、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 replac

5、ement parts recom- mended by the manufacturer. NOTES Frequency Response +0, -0/5dB from 20Hz to 20,000Hs Total Harmonic Distortion 0.002% maximum from 20Hz to 20,000Hz Signal To Noise Ratio Phono: 86dB (A Weighted) High Level: 97dB (A Weighted) Rated Output Voltage Unbalanced Main and Outputs 1 and

6、2: 2.5Vrms Balanced Main and Outputs 1 and 2: 5Vrms Maximum Voltage Output Main and Outputs 1 and 2: 10Vrms Output Impedance 240 ohms Input Impedance Phono: 47k ohms, 65pf High Level: 22k ohms Sensitivity Phono: 4.5mV for rated output High Level: 450mV for rated output Maximum Input Signal Phono: 50

7、mV High Level: 5V Voltage Gain Phono to Tape Out: 40dB High Level to Tape Out: 0dB High Level to Main Out:15dB Power Requirements 100 Volts, 50/60Hz, 50 Watts 110 Volts, 50/60Hz, 50 Watts 120 Volts, 50/60Hz, 50 Watts 220 Volts, 50/60Hz, 50 Watts 230 Volts, 50/60Hz, 50 Watts 240 Volts, 50/60Hz, 50 Wa

8、tts Note: Refer to the rear panel of the C46 for the correct voltage. Dimensions Width: 17-1/2 inches (44.5cm) Height: 5-3/8 inches (13.7cm) Depth: 17-1/2 inches (44.5cm), including clearance for connectors RadioFans.CN 收音机爱好者资料库 REAR VIEW 3 TOP VIEW WITH COVER REMOVED SECTION LOCATION C46 RadioFan

9、s.CN 收音机爱好者资料库 BLOCK DIAGRAM 4 RadioFans.CN 收音机爱好者资料库 56 BLOCK DIAGRAM cont C46 RadioFans.CN 收音机爱好者资料库 78 INTERCONNECT RadioFans.CN 收音机爱好者资料库 91110 C46 MAIN 049784 SH 1 OF 42 RadioFans.CN 收音机爱好者资料库 121413 MAIN 049784 SH 2 OF 42 RadioFans.CN 收音机爱好者资料库 151716 MAIN 049784 SH 3 0F 4 C46 2 RadioFan

10、s.CN 收音机爱好者资料库 182019 MAIN 049784 SH 4 OF 4 2 RadioFans.CN 收音机爱好者资料库 BALANCED 0491893 2122 C46 RadioFans.CN 收音机爱好者资料库 DISPLAY 049783 SH 1 OF 24 2324 RadioFans.CN 收音机爱好者资料库 DISPLAY 049783 SH 2 OF 24 2526 C46 RadioFans.CN 收音机爱好者资料库 DISPLAY 0497834 2728 RadioFans.CN 收音机爱好者资料库 TONE 049786 C46 5 29

11、3130 RadioFans.CN 收音机爱好者资料库 323433 TONE 049786 5 DATA 049200 6 RadioFans.CN 收音机爱好者资料库 3536 DATA 0492006 PUSHBUTTON 049785 7 C46 RadioFans.CN 收音机爱好者资料库 3738 PARTS LIST Ref No.DescriptionPart No. INTERCONNECT S1SWITCH17102600 T1POWER TRANSFORMER04952700 049784 MAIN PCB C1 C77 C78220PF 5% 100V NPO06

12、127300 C2 C6 C9 C11 C12 C13 C15 C16 C20MONO CAP 0.1MF 20% 50V06127700 C4 C7 C17 C21 C31 C35 C51 C52 C5722PF 10% 100V CAPACITOR06128200 C8 C10 C22 C23 C66 C67 C68 C69MONO CAP: 100PF, 5%, 100V, NPO06127500 C24 C25 C26 C27 C28 C29 C30 C32MONO CAP 0.1MF 20% 50V06127700 C33 C34 C37 C46 C48 C49 C50MONO CA

13、P 0.1MF 20% 50V06127700 C36 C38 C39 C40 C41 C42 C43 C44CAP MONO 330PF CAP06128400 C45 C98CAP MC 47PF 100V +/-5% NPO06128000 C53 C54 C55 C56 C58 C59 C60 C61MONO CAP 0.1MF 20% 50V06127700 C62 C63 C65 C71 C72 C73 C75 C86MONO CAP 0.1MF 20% 50V06127700 C64 C70 C74 C76 C81 C85 C104 C10522PF 10% 100V CAPAC

14、ITOR06128200 C84 C87 C88 C89 C91 C97 C187 C188MONO CAP: 100PF, 5%, 100V, NPO06127500 C90 C93 C94 C99 C100 C101 C102MONO CAP 0.1MF 20% 50V06127700 C106 C107 C108 C110 C113 C114MONO CAP 0.1MF 20% 50V06127700 C109 C193 C194 C223 C22422PF 10% 100V CAPACITOR06128200 C111 C112MON CER 0.001MF 100V NPO06126

15、200 C115 C116 C117 C118 C119 C121ELECT CAP 10MF, 50V06644500 C120 C127 C128 C129 C132 C133CAP ELECT 10UF 16V (4X5 CASE)06638200 C122 C123 C124 C125 C126 C130ELECT CAP 10MF, 50V06644500 C131 C136 C142 C143 C145 C146ELECT CAP 10MF, 50V06644500 C134 C135 C137 C138 C139 C140CAP ELECT 10UF 16V (4X5 CASE)

16、06638200 C141 C144 C148 C150 C153 C154CAP ELECT 10UF 16V (4X5 CASE)06638200 C147 C149 C151 C152 C166 C169ELECT CAP 10MF, 50V06644500 C155 C156 C157 C158 C159 C160CAP ELECT 10UF 16V (4X5 CASE)06638200 C161 C162 C163 C164 C165 C167CAP ELECT 10UF 16V (4X5 CASE)06638200 C168 C170 C171 C172CAP ELECT 10UF

17、 16V (4X5 CASE)06638200 C173 C174 C175 C176 C177 C178CAP ELECT 47UF 16V06621500 C179 C180CAP ELECT 47UF 16V06621500 C183 C184 C185 C186 C200 C201ELECT CAP 10MF, 50V06644500 C189 C190 C191 C192MONO CAP: 100PF, 5%, 100V, NPO06127500 C195 C196 C197 C198 C199CAP ELECT 220UF 16V06633000 C202 C203 C204 C2

18、13 C214 C215 C216ELECT CAP 10MF, 50V06644500 C205 C206POLYPROPY CAP.047MF 250V06436400 C207 C209CAP POLYPROPYLENE .0348UF 1%06441300 C208 C210CAP POLYPROPYLENE .01UF 1%06441400 C211 C212 C229CAP ELECT 3300UF 35V06636000 C217 C218CAP ELECT 470UF 25V06633400 C219 C220 C221 C222MONO CAP 0.1MF 20% 50V06

19、127700 D1 D2 D3 D4 D17 D18 D19 D20SIL DIODE: 400 PIV 1.5A07003100 D5 D7 D8 D9 D10 D14 D15 D16SILICON DIODE 1N414807004700 F3FUSE 2A SLO-BLO 5X2008908900 GP1 GP2CARD MOUNTING BRACKET00361100 IC2IC NAND SCHMIT 2-IN X 413319200 IC3IC OPERATIONAL AMPLIFIER13318900 IC4 IC5STEREO DIGITAL VOLUME CONTROL133

20、33100 IC6 IC7 IC8 IC9 IC10 IC11 IC12 IC13 IC14NE5534AN OP AMP LOW NOISE13306700 IC15 IC16 IC17 IC18 IC19 IC20 IC21 IC22NE5534AN OP AMP LOW NOISE13306700 IC23 IC24NE5534AN OP AMP LOW NOISE13306700 IC27 IC39 IC42 IC43 IC44NE5534AN OP AMP LOW NOISE13306700 IC28IC REGULATOR 5V13325000 IC29-5V REGULATOR1

21、3325300 IC30NEG 24V REGULATOR13330600 IC31IC +5V REGULATOR13310800 IC32 IC33 IC34 IC35IC SHFT REG SER-PAR13318600 IC36 IC37 IC38OCTAL DARLINGTON TRANS ARRAY13325800 IC40VOLTAGE REGULATOR 18 VOLT13304400 IC41IC REGULATOR 18 VOLT13304500 J3 J4 J5 J6PHONO JACK 8P, GOLD PLATED11745500 J7PJ261G PHON JACK

22、, GOLD11743600 J14 J15 J18 J19 J20 J25 J26 J27 J29 J30FASTON BLADE W/FEET11770800 J17GOLD ”F” CONNECTOR11766100 J31 J32 J33 J34 J35 J36 J37 J38 J40 J42FASTON BLADE W/FEET11770800 J43 J44 J45FASTON BLADE W/FEET11770800 K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11REED RELAY: FORM 1A,5V, 500 OHMS08705000 K12 K13

23、 K14 K15 K16 K17 K18 K19 K20REED RELAY: FORM 1A, 5V, 500 OHMS08705000 K21 K22 K23 K24 K25 K26 K27 K28 K29REED RELAY: FORM 1A, 5V, 500 OHMS08705000 K30 K31 K32 K33 K34 K35 K36 K37 K38REED RELAY: FORM 1A, 5V, 500 OHMS08705000 K39 K40 K41 K42 K43REED RELAY: FORM 1A, 5V, 500 OHMS08705000 K44 K45 K46 K47

24、REED RELAY FORM 1C, 5V 125OHM08705600 Q3TRANSISTOR NPN MPS412413222300 Q6 Q24TRANSISTOR PNP DARLINGTN13218200 Q7 Q8 Q9 Q10 Q11 Q12 Q20 Q22N. CHANNEL FET13222200 Q13 Q14 Q15 Q16 Q17 Q18 Q19 Q21TRANSISTOR PNP SI MPS412613222400 R1 R2 R3 R4 R5 R6 R7 R8 R111 R112RES NETWORK, 2X220K, ISO14426200 R10 R13

25、R19 R27 R29 R34 R39 R66 R95METAL FILM RES: 267K 1% 1/4W14411800 R11 R110MF 6.81K 1% 1/4W14429700 R15 R20 R31 R35 R88 R89 R90 R96 R129RES MF 2.21 OHM 1/4W 1%14437800 R16 R21 R24 R32 R36 R38 R62 R84 R85RES MF 10K 1% 1/4W14405300 R18 R42 R130 R149 R150 R164 R170RES MF 100K 1% 1/4W14411300 R22 R37METAL

26、FILM RES: 11K 1% 1/4W14410100 R23 R177 R186 R195 R262 R271METAL FILM RES: 10 OHMS 1% 1/4W14415700 R30 R121 R151 R156 R163 R178 R179METAL FILM RES 1K 1% 1/4W14409000 R43 R44 R72 R251RES MF 3.36K .5% 1/4W14440000 R45 R48 R68 R76 R78 R83 R104 R106METAL FILM RES 10M 1% 1/4W14426400 R46 R52 R71 R101METAL

27、 FILM RES 5.36K .5% 1/4W14439900 R47 R51 R70 R82METAL FILM RES 3.79K .5% 1/4W14439800 R49 R50 R69 R81METAL FILM RES 2.67K .5% (SEI)14439700 R53 R64 R87 R92RES MF 6.49K .5% 1/4W14440100 R54 R57 R58 R59 R65 R100 R102 R107METAL FILM RES 200K 1% 1/4W14411700 R55 R60 R61 R67 R73 R74 R75 R109 R153METAL FI

28、LM RES 1M 1/4W14426900 R56 R80 R103 R108METAL FILM RES 1.91K .5% 1/4W14439500 R63 R172 R224 R244 R246RES MF 47.5K 1% 1/4W14410800 R77 R79 R97 R136RES MF 20K 1% 1/4W14410400 R86 R91 R93 R94 R98 R180 R183 R206RES MF 10K 1% 1/4W14405300 R99 R105 R138 R168 R207METAL FILM RES: 267K 1% 1/4W14411800 R113 R

29、159 R174 R182 R185 R201 R202RES MF 221 OHMS 1% 1/4W14417200 R114 R211METAL FILM RES 8.25K 1% 1/4W14415300 R116 R123 R124RES NETWORK, 2X220K, ISO14426200 R117 R125RES MF 475K 1% 1/4W14436400 R118 R221RES MF 89.8K 1/4W 0.5%14437700 R128RES METAL FILM 4.75M 1/4W 1%14437900 R131 R162 R169 R205METL FILM

30、RES 49.9 OHM 1/4W 1%14417500 R133 R146MF 2.21K 1% 1/4W14429800 R139 R142 R143 R144 R145 R147 R148RES MF 2.21 OHM 1/4W 1%14437800 R152 R175METAL FILM RES 100 OHM 1% 1/4W14419600 R154METAL FILM RES 27.4K 1% 1/4W14414100 R157METAL FILM RES: 31.6K 1% 1/4W14414800 R165 R166 R167 R190 R191 R208 R236RES MF

31、 2.21 OHM 1/4W 1%14437800 R171 R173RES MF 100K 1% 1/4W14411300 R187 R188 R247 R249 R263 R268METAL FILM RES: 33K 1% 1/4W14401500 R192 R193 R194 R196 R198 R199 R200METAL FILM RES 1K 1% 1/4W14409000 R203 R204 R209 R210 R216 R217 R218RES MF 221 OHMS 1% 1/4W14417200 R212 R213RES NETWORK ISOLATED 2X22K144

32、36600 R219 R230RES MF 7.5K OHM 1/4W 0.5%14437600 R220 R222 R223 R227 R259 R274 R275RES MF 221 OHMS 1% 1/4W14417200 R225 R22995.3 OHMS 1% 1/4W MF14422000 R226 R228 R232METAL FILM RES 1K 1% 1/4W14409000 R235 R239METAL FILM RES. 20.0 OHM 1/4W14417400 R240 R241 R242 R252 R253 R254 R255RES MF 2.21 OHM 1/

33、4W 1%14437800 R245RES MF 10K 1% 1/4W14405300 R256METAL FILM RES 22.1K 1% 1/4W14418700 R257 R270 R272 R273 R282 R283RES MF 2.21 OHM 1/4W 1%14437800 R267METAL FILM RES: 73.2K 1% 1/4W14413600 R276 R281METAL FILM RES 1.65K 1% 1/4W14409300 R277 R278 R279 R280MF 4.32K 1% 1/4W14430300 S1SLIDE SWITCH1480590

34、0 1 2 RadioFans.CN 收音机爱好者资料库 3940 049189 BALANCED PCB D1 D2SILICON DIODE 1N4148 T&R07004700 J1-FLEXSTRIP 5 PIN 5.7517124100 J2-CABLE FLEXIBLE 8-PIN 5-IN17093000 J3 J4 J5 J6 J7 J8XLR RECEPTACLE MALE11766900 J9 J10XLR RECEPTACLE FEMALE11766800 K1 K2 K3 K4 K5 K6 K7 K8REED RELAY: FORM 1A,5V, 500 OHMS08

35、705000 R1 R2 R3 R4 R5 R6 R7 R8 R9RES MF 221 OHMS 1% 1/4W14417200 R10 R11 R12RES MF 221 OHMS 1% 1/4W14417200 049783 DISPLAY PCB C1 C9 C17CAP ELECT 10UF 50V06644500 C2CAP MONO 220PF 200V 10% NPO06130100 C3 C4 C5 C11 C15 C16CAP MONO .1UF 50V 20% Z5U06130500 C6 C14CAP ELECT 47UF 35V06644600 C8CAP MONO 1

36、00PF 100V 10% NPO06130000 C9CAP ELECT 1UF 50V06651000 C12CAP ELECT 47UF 16V 6.3X5 CASE06638000 D1 D2DIODE SILICON07004700 D4DIODE ZENER 6.2V 5% 500MW07008500 DS1 DS2LED SQUARE RED05810900 DS3 DS4 DS5 DS6 DS7 DS8 DS9 DS10LED LAMP RED07009300 DS11LED LAMP RED07009300 DS12 DS13 DS14 DS15 DS16 DS17 DS18

37、LED GRN 5MM HI-INTENSITY05816500 DS19DISPLAY 12 CHARACTER05815000 F1FUSE T 0.4A 250V08910800 F1HOLDER FUSE 5X20MM PCB MOUNT17815900 J1CABLE FLEXSTRIP 3 PIN 7.25IN17124200 J1- J1- J1-CONN 3-PIN RIGHT ANGLE11767000 J3CONN 12 PIN FFC11772000 J7CABLE FLEXSTRIP 12 PIN 7.25IN17123700 J12 J13 J14 J15 J16BL

38、ADE FASTON W/FEET11770800 K1RELAY REED FORM 1A 5V 500 OHMS08705000 MT1SENSOR IR 38KHZ12104600 Q2 Q3TRANSISTOR NPN 2K/REEL13217100 R1RES MF 1K 1% 1/4W14409000 R2RES MF 100K 1% 1/4W14411300 R3 R4RES NETWORK 9X-1-22314423800 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15RES MF 324 OHM 1% 1/4W14433800 R16 R24RE

39、S MF 10K 1% 1/4W14405300 R17 R30 R32RES MF 10 OHM 1% 1/4W14415700 R18RES WW 100 OHM 10% 2W BWH13913400 R19RES NET 10K X814425300 R20RES MF 6.81K 1% 1/4W14429700 R21 R23 R25 R27 R35 R36 R37 R38RES MF 100 OHM 1% 1/4W14419600 R22RES MF 47.5K 1% 1/4W14410800 R33RES MF 4.99K 1% 1/4W14409800 R34RES MF 2.2

40、1K 1% 1/4W14429800 S1ENCODER OPTICAL ROTARY14624600 S2 S3 S4SWITCH ROT PULSE14624900 U1 U2IC SHFT REG SER-PAR13318600 U1 U2SOCKET IC DIP-16 PIN DUAL17809100 U3IC SUPERVISOR WITH EEPROM13346800 U3SOCKET IC 8-POS17809600 U4IC PROGRAMMED C46 V1.0013347500 U4SOCKET IC 40-PIN17813300 U7IC DRVR VFD 12CHAR

41、 X 16SEG QFP13344600 Y1RESONATOR CERAMIC 12.0MHZ W/CAP 18005900 049786 TONE PCB C1 C2 C5 C6CAP ELECT 4.7UF 50V06651200 C3 C4 C25 C26 C29 C30CAP MPF 0.1UF 5% 63VDC06432500 C7 C8CAP MPF 0.047UF 5% 63VDC06432000 C9 C10CAP ELECT 2.2UF 50V06651100 C11 C12 C15 C16CAP MPF 0.022UF 5% 63VDC06431600 C13 C14CA

42、P ELECT 1UF 50V06651000 C17 C18CAP MPF 0.47UF 5% 50/63VDC06433300 C19 C20 C23 C24CAP MPF 0.0047UF 5% 63VDC06430800 C21 C22 C33 C34 C39 C40CAP MPF 0.22UF 5% 63VDC06432900 C27 C28CAP MPF 0.0022UF 5% 63VDC06430400 C31 C32 C41 C42CAP PF 470PF 5% 160VDC06429600 C35 C36 C37 C38CAP ELECT 47UF 35V06644600 C

43、43 C44CAP MONO 100PF 100V 10% NPO06130000 C45 C46CAP MONO 22PF 200V 10% NPO06129800 C47 C48 C51 C52CAP MONO .1UF 50V 20% Z5U06130500 C49 C50CAP ELECT 10UF 50V06644500 D1DIODE SILICON07004700 J1CABLE FLEXSTRIP 7PIN 10IN17144300 J2CONN 3-PIN RIGHT ANGLE11767000 K1 K2 K3 K4RELAY REED FORM 1A 5V 500 OHM

44、S08705000 R1 R6 R11 R16 R21 R26 R31 R36POT EQUAL13445700 R2 R3 R7 R8 R12 R13 R17 R18 R22 R23RES MF 681 OHM 1% 1/4W14419500 R4 R5RES MF 200K 1% 1/4W14411700 R9 R10RES MF 137K 1/4W14411500 R14 R15RES MF 165K 1% 1/4W14411600 R19 R20RES MF 75K 1% 1/4W14415600 R24 R25RES MF 187K 1% 1/4W14440600 R27 R28 R

45、32 R33 R37 R38RES MF 681 OHM 1% 1/4W14419500 R29 R30 R47 R48RES MF 100K 1% 1/4W14411300 R34 R35RES MF 127K 1% 1/4W14440500 R39 R40RES MF 47.5K 1% 1/4W14410800 R41 R42 R43 R44RES MF 475K 1% 1/4W14436400 R45 R46RES MF 40.2K 1% 1/4W14410700 R49 R50 R52 R54RES MF 3.32K 1% 1/4W14409500 R51 R53 R55 R56RES

46、 MF 10 OHM 1% 1/4W14415700 U1 U2 U3 U4 U5 U6 U7 U8IC OP AMP 4558H13302800 U9 U10NE5534AN OP AMP LOW NOISE13306700 049200 DATA PCB C4 C5MONO CAP 0.1MF 20% 50V06127700 D1SILICON DIODE 1N4148 T&R07004700 IC1 IC2IC AND 2 INPUT X 413317500 IC3LB1720 8 LN DRIVER ARRAY13318000 IC4IC SHFT REG SER-PAR1331860

47、0 J1-FLEXSTRIP 9 PIN 517123900 J2 J3 J4 J5 J6 J7HEADPHONE JACK DUAL BLACK 1/811754900 R1 R3 R7METAL FILM RES 1K 1% 1/4W14409000 R2RES METAL FILM 4.75M 1/4W 1%14437900 R4 R8 R9 R10 R11 R12 R13 R14METAL FILM RES 100 OHM 1% 1/4W14419600 R5 R6 R15 R16 R17 R18 R19 R22RESISTOR MF 182 OHM 1/4W 1%14427300 R

48、20 R21METAL FILM RES 100 OHM 1% 1/4W14419600 049785 PUSHBUTTON PCB J1CONN 12 PIN FFC11772000 J2JACK PHONO 1/8 STEREO11746200 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10SWITCH TACT15005800 PARTS LIST cont Ref No.DescriptionPart No. 4 5 6 7 C46 3 RadioFans.CN 收音机爱好者资料库 4142 EXPLODED VIEW RadioFans.CN 收音机爱好者资料库 43 EXPLODED VIEW PARTS LIST 10164