McIntosh-C220-pre-sch维修电路原理图.pdf

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1、C220 Performance Specifications . 2 Notes . 2 Rear Panel . 3 Section Location . 3 Block Diagram . 5 - 6 Interconnection Diagram . 7 - 8 Main Schematic and PCB . 9 - 18 Display Schematic and PCB . 19 - 24 Balanced/Data Sch and PCB. 25 - 30 Pushbutton Sch and PCB . 31 - 32 Headphone Sch and PCB . 33 -

2、 34 Parts List. 37 - 43 Repacking Instructions . 45 CONTENTS SERIAL NO. WS1001 And Above C220 TUBE PREAMPLIFIER SERVICE MANUAL Serial Number WS1001 And Above PRELIMINARY RadioFans.CN 收音机爱好者资料库 PERFORMANCE SPECIFICATIONS 2 Frequency Response +0, -0.5dB from 20Hz to 20,000Hz Total Harmonic Distortion

3、 0.08% from 20Hz to 20,000Hz Main Output 2.5V for rated input Maximum Voltage Output 8V RMS Unbalanced, 16V RMS Balanced Sensitivity (for rated output) High Level, 450mV unbalanced, 900mV balanced Phono, 4.5mV Signal To Noise Ratio (A-Weighted) High Level, 90dB below rated output Phono, 80dB below 1

4、0mV input Input Impedance High Level, 22K ohms Phono, 47K ohms; 65pF Maximum Input Signal High Level, 5V Unbalanced, 10V Balanced Phono, 50mV ( 1,000Hz) Output Impedance 250 ohms Voltage Gain High Level to Tape Output: 0dB High Level to Main Output: 15dB Phono to Main Output: 55dB Headphone Output I

5、mpedance 16 ohms to 250 ohms Tube Compliment Phono Circuitry: 2 - 12AX7A High Level Circuitry: 2 - 12AX7A Power Requirements 100 Volts, 50/60Hz at 75 watts 110 Volts, 50/60Hz at 75 watts 120 Volts, 50/60Hz at 75 watts 220 Volts, 50/60Hz at 75 watts 230 Volts, 50/60Hz at 75 watts 240 Volts, 50/60Hz a

6、t 75 watts Note: Refer to the rear panel of the C220 for the correct voltage. Overall Dimensions Width is 17-1/2 inches (44.45cm) Height is 6 inches (15.24cm) including feet Depth is 18 inches (45.72cm) including the Front Panel, Knobs and Cables Weight 21.1 pounds (9.59 kg) net, 37.5 pounds (17.05

7、kg) in shipping carton Shipping Carton Dimensions Width 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 primary signal path. 2. Unless otherwise noted, all voltages indicated on the schematics are measured unde

8、r 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 in ohms. b. Capacitor values are microfarads (uF). c. Inductor values are in m

9、icrohenries (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 replacement parts recom- mended by the manufacturer. NOTES RadioFans.CN 收音机爱好者资料库

10、 C220 REAR PANEL SECTION LOCATIONS TOP VIEW WITH COVER REMOVED 3 RadioFans.CN 收音机爱好者资料库 NOTES 4 RadioFans.CN 收音机爱好者资料库 C220 BLOCK DIAGRAM 56 RadioFans.CN 收音机爱好者资料库 78 INTERCONNECT RadioFans.CN 收音机爱好者资料库 C220 910 MAIN 050329 SCH 1 OF 42 RadioFans.CN 收音机爱好者资料库 1112 MAIN 050329 SCH 2 OF 42 RadioFa

11、ns.CN 收音机爱好者资料库 C220 1314 MAIN 050329 SCH 3 OF 42 RadioFans.CN 收音机爱好者资料库 1516 MAIN 050329 SCH 4 OF 42 RadioFans.CN 收音机爱好者资料库 C220 1718 MAIN 050329 PCB2 RadioFans.CN 收音机爱好者资料库 1920 DISPLAY 050330 SCH 1 of 33 RadioFans.CN 收音机爱好者资料库 C220 2122 DISPLAY 050330 SCH 2 of 33 RadioFans.CN 收音机爱好者资料库 2324

12、 DISPLAY 050330 SCH 3 of 3 and PCB3 RadioFans.CN 收音机爱好者资料库 C220 2526 BALANCED / DATA 051331 SCH 1 of 24 RadioFans.CN 收音机爱好者资料库 2728 BALANCED / DATA 050331 SCH 2 of 24 RadioFans.CN 收音机爱好者资料库 C220 2930 BALANCED / DATA 050331 PCB4 RadioFans.CN 收音机爱好者资料库 3132 PUSHBUTTON 051332 SCH and PCB5 RadioFans

13、.CN 收音机爱好者资料库 C220 3334 HEADPHONE 051333 SCH and PCB6 RadioFans.CN 收音机爱好者资料库 3536 NOTES RadioFans.CN 收音机爱好者资料库 C220 37 PARTS LIST MAIN PCB 050329 Ref No. DescriptionPart No. C1CAP ELECT 10UF 50V066445 C2CAP MPF 0.1UF 630VDC064431 C3CAP MONO 47PF 200V 10% NPO061340 C4CAP MONO 47PF 200V 10% NPO0613

14、40 C5CAP ELECT 22UF 100V066574 C6CAP POLYPROP 1UF 20% 250VDC064433 C8CAP ELECT 10UF 50V066445 C7CAP ELECT 1UF 50V066510 C9CAP ELECT 47UF 35V066446 C10CAP MONO 47PF 200V 10% NPO061340 C11CAP MONO 47PF 200V 10% NPO061340 C12CAP MONO 1000PF 50V 10% NPO061344 C13CAP MONO 1000PF 50V 10% NPO061344 C14CAP

15、MONO 1000PF 50V 10% NPO061344 C15CAP MONO 1000PF 50V 10% NPO061344 C16CAP ELECT 10UF 50V066445 C17CAP ELECT 47UF 35V066446 C18CAP DISC MONO .47UF 50V061320 C19CAP MONO .1UF 50V 20% Z5U061346 C20CAP MONO .1UF 50V 20% Z5U061346 C21CAP ELECT 47UF 450V066497 C22CAP ELECT 47UF 35V066446 C23CAP ELECT 47UF

16、 450V066497 C24CAP ELECT 1UF 50V066510 C25CAP MONO .1UF 50V 20% Z5U061346 C26CAP ELECT 10UF 50V066445 C28CAP MONO .1UF 50V 20% Z5U061346 C29CAP ELECT 10UF 250V066493 C30CAP ELECT 4700UF066443 C31CAP MONO 220PF 200V 10% NPO061342 C32CAP MONO 1000PF 50V 10% NPO061344 C33CAP MONO 1000PF 50V 10% NPO0613

17、44 C34CAP MONO 1000PF 50V 10% NPO061344 C35CAP MONO 1000PF 50V 10% NPO061344 C36CAP MPF 0.1UF 630VDC064431 C37CAP ELECT 10UF 50V066445 C39CAP POLYPROP 1UF 20% 250VDC064433 C40CAP ELECT 1UF 50V066510 C41CAP ELECT 47UF 35V066446 C42CAP MPF 0.1UF 630VDC064431 C43CAP ELECT 10UF 16V066580 C44CAP MONO 220

18、PF 200V 10% NPO061342 C45CAP MONO 47PF 200V 10% NPO061340 C46CAP POLYPROP 1UF 20% 250VDC064433 C47CAP ELECT 1UF 50V066510 C48CAP ELECT 100UF 25V066573 C49CAP ELECT 10UF 16V066580 C50CAP MONO .1UF 50V 20% Z5U061346 C51CAP ELECT 100UF 25V066573 C52CAP ELECT 10UF 16V066580 C53CAP PF 0.001UF 5% 63VDC064

19、453 C54CAP MPF 0.0033UF 5% 63VDC064306 C55CAP ELECT 10UF 16V066580 C56CAP MPF 0.1UF 630VDC064431 C57CAP ELECT 10UF 16V066580 C58CAP MONO 47PF 200V 10% NPO061340 C59CAP POLYPROP 1UF 20% 250VDC064433 C60CAP ELECT 1UF 50V066510 C61CAP ELECT 10UF 250V066493 C62CAP ELECT 100UF 25V066573 C63CAP ELECT 10UF

20、 16V066580 C64CAP ELECT 100UF 25V066573 C65CAP ELECT 10UF 16V066580 C66CAP PF 0.001UF 5% 63VDC064453 C67CAP MPF 0.0033UF 5% 63VDC064306 C68CAP ELECT 10UF 16V066580 C69CAP ELECT 10UF 16V066580 C70CAP MONO 100PF 100V 10% NPO061341 C71CAP ELECT 10UF 16V066580 C72CAP MONO .1UF 50V 20% Z5U061346 C73CAP M

21、ONO .1UF 50V 20% Z5U061346 C74CAP MONO 100PF 100V 10% NPO061341 C75CAP ELECT 10UF 16V066580 C76CAP MONO 100PF 100V 10% NPO061341 C77CAP ELECT 10UF 16V066580 C78CAP ELECT 10UF 16V066580 C79CAP ELECT 10UF 16V066580 C80CAP MONO 100PF 100V 10% NPO061341 C81CAP ELECT 10UF 16V066580 C82CAP MONO 100PF 100V

22、 10% NPO061341 C83CAP ELECT 10UF 16V066580 C84CAP MONO 100PF 100V 10% NPO061341 C85CAP ELECT 10UF 16V066580 C86CAP ELECT 10UF 16V066580 C87CAP MONO .1UF 50V 20% Z5U061346 C88CAP ELECT 220UF 50V 20%066254 C89CAP POLYPROP .047UF 10% 250VDC064364 C90CAP ELECT 220UF 50V 20%066254 C91CAP MONO .1UF 50V 20

23、% Z5U061346 C92CAP ELECT 1UF 50V066510 C93CAP ELECT 2200UF 50V 20%066440 C94CAP MONO .1UF 50V 20% Z5U061346 C95CAP ELECT 10UF 50V066445 C96CAP ELECT 2200UF 50V 20%066440 C97CAP ELECT 10UF 50V066445 C98CAP MONO .1UF 50V 20% Z5U061346 C100CAP POLYPROP .047UF 10% 250VDC064364 C102CAP ELECT 10UF 50V0664

24、45 C103CAP MONO .1UF 50V 20% Z5U061346 C104CAP MONO .1UF 50V 20% Z5U061346 C105CAP MONO .1UF 50V 20% Z5U061346 C106CAP POLY .047UF 10% 1000VDC064434 C115CAP ELECT 47UF 35V066446 C116CAP ELECT 10UF 50V066445 C118CAP ELECT 10UF 50V066445 C119CAP ELECT 10UF 50V066445 C121CAP MONO .1UF 50V 20% Z5U061346

25、 C122CAP MONO .1UF 50V 20% Z5U061346 2 Ref No. DescriptionPart No. RadioFans.CN 收音机爱好者资料库 PARTS LIST cont 38 C123CAP ELECT 10UF 50V066445 C125CAP MONO .1UF 50V 20% Z5U061346 C126CAP MONO .1UF 50V 20% Z5U061346 C127CAP ELECT 10UF 50V066445 C128CAP ELECT 10UF 50V066445 C129CAP ELECT 47UF 35V066446 C1

26、30CAP ELECT 10UF 50V066445 C132CAP ELECT 10UF 50V066445 C133CAP ELECT 10UF 50V066445 C134CAP MONO .1UF 50V 20% Z5U061346 C135CAP MONO .1UF 50V 20% Z5U061346 C136CAP ELECT 10UF 50V066445 C145CAP ELECT 10UF 50V066445 C146CAP ELECT 10UF 50V066445 C147CAP ELECT 47UF 35V066446 C148CAP ELECT 47UF 35V06644

27、6 C149CAP MONO 220PF 200V 10% NPO061342 C150CAP MONO .1UF 50V 20% Z5U061346 C152CAP MONO .1UF 50V 20% Z5U061346 C155CAP MONO .1UF 50V 20% Z5U061346 C151CAP ELECT 10UF 50V066445 C153CAP ELECT 10UF 50V066445 C154CAP ELECT 10UF 50V066445 C156CAP ELECT 10UF 50V066445 D1DIODE SIL 400 PIV 1.5A070031 D2DIO

28、DE SIL 400 PIV 1.5A070031 D3DIODE SIL 400 PIV 1.5A070031 D4DIODE SILICON070174 D5DIODE SIL 400 PIV 1.5A070031 D6DIODE SIL 400 PIV 1.5A070031 D7DIODE SIL 400 PIV 1.5A070031 D8DIODE SIL 400 PIV 1.5A070031 D9DIODE SIL 400 PIV 1.5A070031 D10DIODE SILICON070174 D11DIODE SIL 400 PIV 1.5A070031 D12DIODE SI

29、L 400 PIV 1.5A070031 D13DIODE SIL 400 PIV 1.5A070031 D15DIODE SIL 400 PIV 1.5A070031 D14DIODE SILICON070174 D16DIODE SILICON070174 DS1LED GREEN 3MM HI INTENSITY058172 DS2LED GREEN 3MM HI INTENSITY058172 DS3LED GREEN 3MM HI INTENSITY058172 DS4LED GREEN 3MM HI INTENSITY058172 F2FUSE 2A 250V SLO-BLO 5X

30、20 IEC089088 (F2)HOLDER FUSE 5X20MM PCB MOUNT178159 F4FUSE 1/8A SLO-BLO 5X20 IEC089094 (F4)HOLDER FUSE 5X20MM PCB MOUNT178159 F5FUSE 0.5A SLO-BLO 5X20 IEC089092 (F5)HOLDER FUSE 5X20MM PCB MOUNT178159 GP1BRACKET PCB CARD MOUNTING003611 GP2BRACKET PCB CARD MOUNTING003611 J1CONN FFC 18PIN117765 J2JACK

31、PHONO 6P GOLD PLATED117449 J3JACK PHONO 8P GOLD PLATED117455 J4CONN FFC 18PIN117765 J5CONN FFC 18PIN117765 J6JACK PHONO 8P GOLD PLATED117455 J7CONN 12 PIN FFC117720 J8CONN FFC 18PIN117765 J9HEADER 9 CIRCUIT POST NATURAL117724 J10BLADE FASTON W/FEET117708 J11BLADE FASTON W/FEET117708 J12CONN PCB MOUN

32、T POWER RED117719 J13CONN PCB MOUNT POWER RED117719 J14CONN PCB MOUNT POWER RED117719 J15CONN PCB MOUNT POWER RED117719 J16JACK PHONO GOLD PJ261G117436 J41CONN FFC 18PIN117765 K1RELAY REED SPST-NO 5V 1.2A087078 K2RELAY REED SPST-NO 5V 1.2A087078 K3RELAY REED SPST-NO 5V 1.2A087078 K4RELAY REED SPST-N

33、O 5V 1.2A087078 K5RELAY REED SPST-NO 5V 1.2A087078 K6RELAY REED SPST-NO 5V 1.2A087078 K7RELAY REED SPST-NO 5V 1.2A087078 K8RELAY REED SPST-NO 5V 1.2A087078 K9RELAY REED SPST-NO 5V 1.2A087078 K10RELAY REED SPST-NO 5V 1.2A087078 K11RELAY REED SPST-NO 5V 1.2A087078 K12RELAY REED SPST-NO 5V 1.2A087078 K

34、13RELAY REED SPST-NO 5V 1.2A087078 K14RELAY REED SPST-NO 5V 1.2A087078 K15RELAY REED SPST-NO 5V 1.2A087078 K16RELAY REED SPST-NO 5V 1.2A087078 K17RELAY REED FORM 1C 5V 125 OHM087056 K18RELAY REED FORM 1C 5V 125 OHM087056 K20RELAY 24VDC 5A 277VAC087057 K21RELAY REED SPST-NO 5V 1.2A087078 K22RELAY REE

35、D SPST-NO 5V 1.2A087078 K23RELAY REED SPST-NO 5V 1.2A087078 K24RELAY REED SPST-NO 5V 1.2A087078 K25RELAY REED SPST-NO 5V 1.2A087078 K26RELAY REED SPST-NO 5V 1.2A087078 K27RELAY REED SPST-NO 5V 1.2A087078 Q1TRANSISTOR N JFET132318 Q2TRANSISTOR N JFET132318 Q3TRANSISTOR N JFET132318 Q4TRANSISTOR N JFE

36、T132318 Q5TRANSISTOR PNP SILICON132304 Q6TRANSISTOR PNP SILICON132304 Q7TRANSISTOR PNP SILICON132304 Q8TRANSISTOR PNP SILICON132304 Q9TRANSISTOR PNP SILICON132304 Q10TRANSISTOR PNP SILICON132304 Q11TRANSISTOR PNP SILICON132304 Q12TRANSISTOR PNP SILICON132304 Q13TRANSISTOR N JFET132318 MAIN PCB 05032

37、9 (contd) Ref No. DescriptionPart No. Ref No. DescriptionPart No. RadioFans.CN 收音机爱好者资料库 C220 PARTS LIST cont MCD201 39 Q14TRANSISTOR N JFET132318 Q15TRANSISTOR N JFET132318 Q16TRANSISTOR N JFET132318 Q17TRANSISTOR NPN POWER132295 (Q17)HEATSINK TO-220080017 Q19TRANSISTOR PNP SILICON132304 Q29TRANSI

38、STOR PNP SILICON132304 Q21TRANSISTOR NPN POWER132295 Q22TRANSISTOR NPN 2A 50V132302 Q23TRANSISTOR NPN 2A 50V132302 Q18TRANSISTOR NPN SILICON132317 Q24TRANSISTOR PNP132326 Q25TRANSISTOR PNP132326 Q26TRANSISTOR NPN SILICON132317 Q27TRANSISTOR PNP132326 Q28TRANSISTOR N JFET132318 Q30TRANSISTOR N JFET13

39、2318 Q31TRANSISTOR PNP132326 Q32TRANSISTOR NPN SILICON132317 Q20TRANSISTOR NPN132325 R1RES MF 20K 1% 1/4W144524 R2RES MF 150K 1% 1/4W144627 R3RES MF 221K 1% 1/4W144629 R4RES MF 200K 1% 1/4W144531 R5RES MF 2.74K 1% 1/4W144587 R6RES MF 2.21M 1% 1/4W144576 R7RES MF 47.5K 1% 1/4W144526 R8RES MF 33.2K 1%

40、 1/4W144694 R9RES MF 24.9K 1% 1/4W144439 R10RES 16.5K 1% 1/4W144103 R11RES MF 100K 1% 1/4W144528 R12RES MF 1M 1% 1/4W144577 R13RES MF 10M 1% 1/4W144575 R14RES MF 10M 1% 1/4W144575 R15RES MF 10M 1% 1/4W144575 R16RES MF 10M 1% 1/4W144575 R17RES MF 1.5K 1% 1/4W144539 R18RES MF 3.32K 1% 1/4W144518 R19RE

41、S MF 10K 1% 1/4W144504 R20RES MF 267K 1% 1/4W144532 R21RES MF 22.1K 1% 1/4W144564 R22RES MF 12.1K 1% 1/4W144550 R23RES MF 15K 1% 1/4W144623 R24RES MF 267K 1% 1/4W144532 R25RES MF 1M 1% 1/4W144577 R26RES MF 267K 1% 1/4W144532 R27RES MF 1M 1% 1/4W144577 R28RES MF 267K 1% 1/4W144532 R29RES MF 1M 1% 1/4

42、W144577 R30RES MF 267K 1% 1/4W144532 R31RES MF 1M 1% 1/4W144577 R32RES MF 267K 1% 1/4W144532 R33RES MO 100K 5% 2W144698 R34RES MF 10K 1% 1/4W144504 R35RES MF 1.5K 1% 1/4W144539 R36RES MF 267K 1% 1/4W144532 R37RES MF 12.1K 1% 1/4W144550 R38RES MF 267K 1% 1/4W144532 R39RES MF 267K 1% 1/4W144532 R40RES

43、 MF 267K 1% 1/4W144532 R41RES MF 267K 1% 1/4W144532 R42RES MF 1K 1% 1/4W144513 R43RES MF 1K 1% 1/4W144513 R44RES MF 1K 1% 1/4W144513 R45RES MF 1M 1% 1/4W144577 R46RES MF 1M 1% 1/4W144577 R47RES MF 221K 1% 1/4W144629 R48RES MF 200K 1% 1/4W144531 R49RES MF 1M 1% 1/4W144577 R50RES MF 1M 1% 1/4W144577 R

44、51RES MF 3.32K 1% 1/4W144518 R52RES MF 2.74K 1% 1/4W144587 R53RES MF 20K 1% 1/4W144524 R54RES MF 1K 1% 1/4W144513 R55RES MF 150K 1% 1/4W144627 R56RES MF 1M 1% 1/4W144577 R57RES MF 1.5K 1% 1/4W144539 R58RES MF 3.32K 1% 1/4W144518 R59RES MF 47.5K 1% 1/4W144526 R60RES MF 33.2K 1% 1/4W144694 R61RES MF 2

45、.21M 1% 1/4W144576 R62RES MF 24.9K 1% 1/4W144439 R63RES 16.5K 1% 1/4W144103 R64RES MF 22.1K 1% 1/4W144564 R65RES MF 10M 1% 1/4W144575 R66RES MF 10M 1% 1/4W144575 R67RES MF 10M 1% 1/4W144575 R68RES MF 10M 1% 1/4W144575 R69RES MF 15K 1% 1/4W144623 R70RES MF 221K 1% 1/4W144629 R71RES MF 200K 1% 1/4W144

46、531 R72RES MF 1K 1% 1/4W144513 R73RES MF 1K 1% 1/4W144513 R74RES MF 1K 1% 1/4W144513 R75RES NETWORK 2 X 220K ISO144678 R76RES MF 1M 1% 1/4W144577 R77RES MF 47.5K 1% 1/4W144526 R78RES MF 1.5K 1% 1/4W144539 R79RES MF 953 OHM 1% 1/4W144473 R80RES MF 22.1K 1% 1/4W144564 R81RES MF 221K 1% 1/4W144629 R82R

47、ES MF 1.82K 1% 1/4W144582 R83RES MF 75K 1% 1/4W144156 R84RES MF 1M 1% 1/4W144577 R85RES NETWORK 2 X 220K ISO144678 R86RES MF 221K 1% 1/4W144629 R87RES MF 200K 1% 1/4W144531 R88RES MF 1K 1% 1/4W144513 MAIN PCB 050329 (contd) Ref No. DescriptionPart No. Ref No. DescriptionPart No. RadioFans.CN 收音机爱好者资料库 PARTS LIST cont 40 R89RES NETWORK 2 X 220K ISO144678 R90RES MF 1M 1% 1/4W144577 R91RES MF 47.5K 1% 1/4W144526 R92RES MF 1.5K 1% 1/4W144539 R93RES MF 953 OHM 1% 1/4W144473 R94RES MF 22.1K 1% 1/4W144564 R95RES MF 221K 1% 1/4W144629 R96RES MF 1.82K 1% 1/4W144582 R97RES MF 75K 1