McIntosh-MDA1000-dac-sm维修电路原理图.pdf

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1、SERVICE MANUAL Performance Specifications . 2 Notes . 2 Rear Panel . 3 Section Location . 4 Block Diagram . 5 - 6 Interconnection Diagram . 7 - 8 Main Schematic and PCB. 9 - 18 Keyboard Supply Schematic and PCB . 19 - 20 Display Schematic and PCB . 21 - 22 Dataport Schematic and PCB . 23 - 24 Parts

2、List . 25 - 30 Exploded View and Parts List . 31 - 32 Repacking Instructions . 33 CONTENTS D/A CONVERTER 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. Unless otherwise noted, all voltages indicated on the schematics are me

3、asured 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 in ohms. b. Capacitor values are microfarads (uF). c. Inductor valu

4、es 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 replacement parts recom- mended by the manufacturer. NOTES Analog Audio

5、 Specifications Frequency Response +/-0.5dB from 4Hz to 45,000Hz (Sampling Frequency 96kHz and 88.2kHz) +/-0.3dB from 4Hz to 22,000Hz (Sampling Frequency 48kHz) +/-0.3dB from 4Hz to 20,000Hz (Sampling Frequency 44.1kHz) +/-0.3dB from 4Hz to 15,000Hz (Sampling Frequency 32kHz) Total Harmonic Distorti

6、on 0.002% at 1,000Hz Signal To Noise Ratio Better than 110dB (A Weighted) Dynamic Range Better than 100dB (1,000Hz) Rated Output Voltage 2V Unbalanced Outputs (Bypass On Mode) 6V Unbalance Outputs (Bypass Off Mode) 2V Balanced Outputs (Bypass On Mode) 6V Balanced Outputs (Bypass Off Mode) Digital Au

7、dio Specifications Digital Audio Format IEC958, S/PDIF Coaxial Inputs (1, 2 and 3) 0.5V p-p 75ohms Optical Inputs (4, 5 and 6) -15 -20dBm XRL Input (7) 5V p-p 110ohms Sampling Frequencies 96kHz, 48kHz, 44.1kHz and 32kHz General Specifications Power Requirements 100 Volts 50.60Hz, 20 watts 110 Volts

8、50/60Hz, 20 watts 120 Volts 50/60Hz, 20 watts 220 Volts 50/60Hz, 20 watts 230 Volts 50/60Hz, 20 watts 240 Volts 50/60Hz, 20 watts Note: Refer to the rear panel of the MDA1000 for the correct voltage. Overall Dimensions Width is 17-1/2 inches (44.45cm), Height is 6 inches (15.24cm) including feet, De

9、pth is 16-1/8 inches (40.96cm) including Front Panel and Knobs Weight 24 pounds (10.89kg) net, 38 pounds (17.24kg) in shipping carton RadioFans.CN 收音机爱好者资料库 3 MDA1000 TOP AND REAR PANEL RadioFans.CN 收音机爱好者资料库 4 SECTION LOCATIONS TOP VIEW WITH COVER REMOVED 5 DISPLAY PCB 6 2 DATAPORT PCB MAIN PCB 3

10、 UPSAMPLING PCB 4 KEYBOARD PCB TRANSFORMER RadioFans.CN 收音机爱好者资料库 56 BLOCK DIAGRAM MDA1000 LEFT + I/V CONV. LEFT - I/V CONV. RIGHT + I/V CONV. RIGHT - I/V CONV. LEFT + 24BIT D/A CONVERTER LEFT + 24BIT D/A CONVERTER LEFT - 24BIT D/A CONVERTER LEFT - 24BIT D/A CONVERTER RIGHT + 24BIT D/A CONVERTER RI

11、GHT + 24BIT D/A CONVERTER RIGHT - 24BIT D/A CONVERTER RIGHT - 24BIT D/A CONVERTER BCK LRCK LDATA RDATA LRCK DATA BCK MCK RESET MICROCONTROLLER DISPLAY DRIVER INPUT LEVEL SELECT SETUP CONTROLS POWER CONTROL RELAY STANDBY LOW VOLTAGE SUPPLY POWER TRANSFORMER FUSE POWER SWITCH 120VAC 50/60Hz POWER CONT

12、ROL IN OUT POWER CONTROL 5V 3.3V 15V 5V -5V -15V DIGITAL LOW VOLTAGE SUPPLY 5V 3.3V DISPLAY ANALOG VOLTAGE SUPPLY V. F. DISPLAY IR INPUT IR SENSOR DATA INPUT 1 2 3 4 5 6 7 DATA PORT DATA PORT DRIVER DIGITAL INTERFACE RECEIVER XLR DIFFERENTIAL AMP 3 1 2 6 5 4 COAXIAL COAXIAL COAXIAL OPTICAL OPTICAL O

13、PTICAL 7 DIGITAL INPUT LEFT BALANCED LEFT UNBALANCED + - RIGHT BALANCED + - OUTPUTS RIGHT UNBALANCED MUTE RELAY MUTE RELAY MUTE RELAY MUTE RELAY MUTE RELAY MUTE RELAY LEFT + BALANCED AMP LEFT - BALANCED AMP RIGHT + BALANCED AMP RIGHT - BALANCED AMP LEFT DIFFERENTIAL AMP RIGHT DIFFERENTIAL AMP LEFT +

14、 FILTER LEFT - FILTER RIGHT + FILTER RIGHT - FILTER LEFT BALANCED OUTPUT LEVEL CONTROL RIGHT BALANCED OUTPUT LEVEL CONTROL BYPASS CONTROL RELAY BYPASS CONTROL RELAY BYPASS CONTROL RELAY BYPASS CONTROL RELAY S/F DIVIDER 768KHz UPSAMPLING MODULE RadioFans.CN 收音机爱好者资料库 78 INTERCONNECT1 KEYBOARD DISPLA

15、Y MAIN2 5 4 3 DATAPORT6 NS5V GND DATA GND SCLK GND LCLK GND GND GND REM GND 1 J1 GND STBY/ON GND STBY/LED NS5V GND REM GND SETUP SETUP LED KBLED GND 1 J1 GND STBY/ON GND STBY/LED NS5V GND REM GND SETUP SETUP LED KBLED GND 1 J2 INPUT CCW INPUT CW SETUP LED REM LEVA LEVB NC SETUP STBY/ON DI CE GND -29

16、V GND 5VD FIL1 BLK CL NS5V GND GND GND FIL2 1 J1 NS5V GND DATA1 GND SCLK1 GND LCLK1 GND GND GND REM GND 1 J13 AC14V INPUT CCW INPUT CW AC26VCT REM LEVA LEVB BYPASS LED SETUP BLK SCLK2 NS5V AC6V AC26V AC26V AC14VCT STBY/ON DATA2 LCLK2 GND AC6V SETUP LED AC14V 1 J6 J9 16 120V B 20V B 0V B 120V A 100V

17、A 0V A J10 16 J11 16 J12 16 1 8 J14 240V 220V 100V 120V 120V B 20V B 0V B 120V A 100V A 0V A 120V B 20V B 0V B 120V A 100V A 0V A 120V B 20V B 0V B 120V A 100V A 0V A J8J7 BLK S1 POWER WHT ORN VIO GRY BLU BLK GRN GRN YEL BLU YEL RED BLK RED ORN WHT VIO GRY BLU BLK T1 WHT BLK 120V AC 50/60Hz MODULE 0

18、49999 GRN GRN YEL BLU YEL RED BLK RED GND GND GND FIL -29V GND 5VD FIL AC H AC L RadioFans.CN 收音机爱好者资料库 MAIN 049988 SH 1 OF 42 MDA1000 910 RadioFans.CN 收音机爱好者资料库 1112 MAIN 049988 SH 2 OF 4 2 RadioFans.CN 收音机爱好者资料库 1314 MDA1000 MAIN 049988 SH 3 OF 42 RadioFans.CN 收音机爱好者资料库 MAIN 049988 SH 4 OF 42

19、1516 RadioFans.CN 收音机爱好者资料库 1718 MAIN 0499882 MDA1000 MODULE O49999 3 RadioFans.CN 收音机爱好者资料库 1920 KEYBOARD 0499904 1.9V 1.9V 5V GND GND GND GND S2 S1 SENSOR GND REM NS5V 3 1 2 Q1 DS2 DS3 10uF C1 10 R1 C3 .1uF 75 R2 213 Vcc Vout GND MT1 DS1 J1:1 STBY/ON STANDBY/ON J1:6 SETUP SETUP J1:9 KBLED J1:8 J

20、1:11 J1:5 J1:3 J1:2 STBY LED J1:10 J1:12 J1:7 SETUP LED 47uF C2 J1:4 5J2:8 5J2:2 5J2:5 5J2:6 5J2:1 5J2:3 5J2:4 5J2:7 5J2:9 5J2:10 5J2:11 5J2:12 R1 DS1DS3 R2 129485 Q1 C1 C2 C3 J1 MT1 S1 DS2 S2 * * * Denotes components on the reverse or backside of the Pc Bd Rev.A RadioFans.CN 收音机爱好者资料库 2122 DISPLAY

21、 0499895 MDA1000 RadioFans.CN 收音机爱好者资料库 2324 DATAPORT 0499916 RadioFans.CN 收音机爱好者资料库 2526 MDA1000 PARTS LIST Ref. No.DescriptionPart No. 1MAIN PCB 049988 C1CAP MPF 0.01UF 5% 63VDC064312 C2CAP MONO .1uF 50V 20% Z5U061305 C3CAP MONO .1uF 50V 20% Z5U061305 C4CAP ELECT 47UF 25V066413 C5CAP MPF 0.022UF

22、 5% 63VDC064316 C6CAP ELECT 47UF 25V066413 C7CAP MPF 0.01UF 5% 63VDC064312 C8CAP MPF 0.01UF 5% 63VDC064312 C9CAP MPF 0.01UF 5% 63VDC064312 C10CAP MPF 0.01UF 5% 63VDC064312 C11CAP PF 0.001UF 5% 63VDC064300 C12CAP MPF 0.01UF 5% 63VDC064312 C13CAP MPF 0.01UF 5% 63VDC064312 C14CAP MPF 0.01UF 5% 63VDC064

23、312 C15CAP MONO .1uF 50V 20% Z5U061305 C16CAP MPF 0.01UF 5% 63VDC064312 C17CAP MONO .1uF 50V 20% Z5U061305 C18CAP ELECT 10UF 100VDC066411 C19CAP MONO .1uF 50V 20% Z5U061305 C20CAP MONO .1uF 50V 20% Z5U061305 C21CAP MONO .1uF 50V 20% Z5U061305 C22CAP ELECT 10UF 100VDC066411 C23CAP MONO .1uF 50V 20% Z

24、5U061305 C24CAP MONO .01UF 50V 20% X7R061304 C25CAP MONO .01UF 50V 20% X7R061304 C27CAP MONO .01UF 50V 20% X7R061304 C28CAP MONO .01UF 50V 20% X7R061304 C29CAP MONO .01UF 50V 20% X7R061304 C30CAP ELECT 47UF 25V066413 C31CAP MONO .1uF 50V 20% Z5U061305 C32CAP MONO .01UF 50V 20% X7R061304 C33CAP MONO

25、.1uF 50V 20% Z5U061305 C34CAP ELECT 100UF 25V066412 C35CAP MONO .1uF 50V 20% Z5U061305 C36CAP MONO .1uF 50V 20% Z5U061305 C37CAP ELECT 100UF 25V066412 C38CAP MONO .1uF 50V 20% Z5U061305 C39CAP ELECT 1000UF 25V066513 C40CAP MPF 0.033UF 100V 10%064427 C41CAP MPF 0.033UF 100V 10%064427 C42CAP ELECT 220

26、UF 50V 20%066254 C43CAP MONO 100PF 100V 10% NPO061300 C44CAP ELECT 47UF 25V066413 C45CAP MONO .1uF 50V 20% Z5U061305 C46CAP MONO .1uF 50V 20% Z5U061305 C47CAP ELECT 3300UF 35V066509 C48CAP ELECT 3300UF 35V066509 C49CAP ELECT 3300UF 35V066509 C50CAP ELECT 3300UF 35V066509 C51CAP MONO .01UF 50V 20% X7

27、R061304 C52CAP MONO .1uF 50V 20% Z5U061305 C53CAP MONO .1uF 50V 20% Z5U061305 C54CAP MONO .1uF 50V 20% Z5U061305 C55CAP MONO .1uF 50V 20% Z5U061305 C56CAP MONO .1uF 50V 20% Z5U061305 C57CAP ELECT 220UF 50V 20%066254 C58CAP ELECT 47UF 50V066215 C59CAP ELECT 220UF 25V AUDIO066414 C60CAP ELECT 220UF 25

28、V AUDIO066414 C61CAP ELECT 220UF 25V AUDIO066414 C62CAP ELECT 220UF 25V AUDIO066414 C63CAP ELECT 220UF 25V AUDIO066414 C64CAP ELECT 47UF 50V066215 C65CAP ELECT 220UF 25V AUDIO066414 C66CAP ELECT 10UF 16V 4X5 CASE066382 C67CAP ELECT 10UF 16V 4X5 CASE066382 C68CAP ELECT 10UF 16V 4X5 CASE066382 C69CAP

29、ELECT 10UF 16V 4X5 CASE066382 C70CAP ELECT 10UF 16V 4X5 CASE066382 C71CAP ELECT 10UF 16V 4X5 CASE066382 C72CAP ELECT 10UF 16V 4X5 CASE066382 C73CAP ELECT 10UF 16V 4X5 CASE066382 C74CAP ELECT 47UF 16V 6.3X5 CASE066380 C75CAP ELECT 47UF 16V 6.3X5 CASE066380 C76CAP ELECT 100UF 16V 5MM066539 C77CAP ELEC

30、T 47UF 16V 6.3X5 CASE066380 C78CAP ELECT 47UF 16V 6.3X5 CASE066380 C79CAP ELECT 100UF 16V 5MM066539 C80CAP ELECT 47UF 16V 6.3X5 CASE066380 C81CAP ELECT 47UF 16V 6.3X5 CASE066380 C82CAP ELECT 100UF 16V 5MM066539 C83CAP ELECT 47UF 16V 6.3X5 CASE066380 C84CAP ELECT 47UF 16V 6.3X5 CASE066380 C85CAP ELEC

31、T 100UF 16V 5MM066539 C86CAP ELECT 10UF 16V 4X5 CASE066382 C87CAP ELECT 10UF 16V 4X5 CASE066382 C88CAP ELECT 10UF 16V 4X5 CASE066382 C89CAP ELECT 10UF 16V 4X5 CASE066382 C90CAP ELECT 10UF 16V 4X5 CASE066382 C91CAP ELECT 10UF 16V 4X5 CASE066382 C92CAP ELECT 10UF 16V 4X5 CASE066382 C93CAP ELECT 10UF 1

32、6V 4X5 CASE066382 C94CAP ELECT 10UF 16V 4X5 CASE066382 C95CAP ELECT 10UF 16V 4X5 CASE066382 C96CAP ELECT 10UF 16V 4X5 CASE066382 C97CAP ELECT 10UF 16V 4X5 CASE066382 C98CAP ELECT 10UF 16V 4X5 CASE066382 C99CAP ELECT 10UF 16V 4X5 CASE066382 C100CAP ELECT 10UF 16V 4X5 CASE066382 C101CAP ELECT 10UF 16V

33、 4X5 CASE066382 C102CAP ELECT 47UF 16V 6.3X5 CASE066380 C103CAP ELECT 47UF 16V 6.3X5 CASE066380 C104CAP ELECT 100UF 16V 5MM066539 C105CAP ELECT 47UF 16V 6.3X5 CASE066380 C106CAP ELECT 47UF 16V 6.3X5 CASE066380 C107CAP ELECT 100UF 16V 5MM066539 C108CAP ELECT 47UF 16V 6.3X5 CASE066380 C109CAP ELECT 47

34、UF 16V 6.3X5 CASE066380 C110CAP ELECT 100UF 16V 5MM066539 C111CAP ELECT 47UF 16V 6.3X5 CASE066380 C112CAP ELECT 47UF 16V 6.3X5 CASE066380 C113CAP ELECT 100UF 16V 5MM066539 C114CAP ELECT 10UF 16V 4X5 CASE066382 C115CAP ELECT 10UF 16V 4X5 CASE066382 C116CAP ELECT 10UF 16V 4X5 CASE066382 C117CAP ELECT

35、10UF 16V 4X5 CASE066382 C118CAP ELECT 10UF 16V 4X5 CASE066382 C119CAP ELECT 10UF 16V 4X5 CASE066382 C120CAP ELECT 10UF 16V 4X5 CASE066382 C121CAP ELECT 10UF 16V 4X5 CASE066382 C122CAP MONO 100PF 100V 10% NPO061300 C123CAP MONO 100PF 100V 10% NPO061300 C124CAP MONO 100PF 100V 10% NPO061300 C125CAP MO

36、NO 100PF 100V 10% NPO061300 C126CAP MONO 100PF 100V 10% NPO061300 C127CAP MONO 100PF 100V 10% NPO061300 C128CAP ELECT 47UF 25V066413 C129CAP ELECT 47UF 25V066413 C130CAP ELECT 47UF 25V066413 C131CAP ELECT 47UF 25V066413 C132CAP MONO .1uF 50V 20% Z5U061305 C133CAP MONO .1uF 50V 20% Z5U061305 C134CAP

37、ELECT 10UF 100VDC066411 C135CAP ELECT 10UF 100VDC066411 C136CAP ELECT 10UF 100VDC066411 C137CAP ELECT 10UF 100VDC066411 C138CAP ELECT 10UF 100VDC066411 C139CAP ELECT 10UF 100VDC066411 C140CAP MONO .1uF 50V 20% Z5U061305 C141CAP MONO .1uF 50V 20% Z5U061305 C142CAP MONO .1uF 50V 20% Z5U061305 C143CAP

38、MONO .1uF 50V 20% Z5U061305 C144CAP POLYPROP 4700PF 2.5% 63VDC064390 C145CAP POLYPROP 4700PF 2.5% 63VDC064390 C146CAP POLYPROP 4700PF 2.5% 63VDC064390 C147CAP POLYPROP 4700PF 2.5% 63VDC064390 C148CAP POLYPROP 470PF 5% 100VDC064370 C149CAP POLYPROP 470PF 5% 100VDC064370 C150CAP POLYPROP 470PF 5% 100V

39、DC064370 C151CAP POLYPROP 470PF 5% 100VDC064370 C152CAP POLYPROP .0015UF 5% 100VDC064369 C153CAP POLYPROP .0015UF 5% 100VDC064369 C154CAP POLYPROP .0015UF 5% 100VDC064369 C155CAP POLYPROP .0015UF 5% 100VDC064369 C156CAP MONO .1uF 50V 20% Z5U061305 C157CAP ELECT 10UF 100VDC066411 C158CAP ELECT 10UF 1

40、00VDC066411 C159CAP MONO .1uF 50V 20% Z5U061305 C160CAP MPF 0.1UF 5% 63VDC064325 C161CAP MPF 0.1UF 5% 63VDC064325 C162CAP POLYPROP 680PF 2.5% 100VDC064389 C163CAP POLYPROP 680PF 2.5% 100VDC064389 C164CAP POLYPROP 680PF 2.5% 100VDC064389 C165CAP POLYPROP 680PF 2.5% 100VDC064389 C166CAP MPF 0.1UF 5% 6

41、3VDC064325 C167CAP MPF 0.1UF 5% 63VDC064325 C168CAP MPF 0.1UF 5% 63VDC064325 C169CAP MPF 0.1UF 5% 63VDC064325 C170CAP ELECT 47UF 25V066413 C171CAP ELECT 47UF 25V066413 C172CAP ELECT 47UF 25V066413 C173CAP ELECT 47UF 25V066413 C174CAP ELECT 47UF 25V066413 C175CAP ELECT 47UF 25V066413 D1DIODE RECTIFIE

42、R070131 D2DIODE RECTIFIER070131 D3DIODE SILICON070047 D4DIODE RECTIFIER070131 D5DIODE RECTIFIER070131 D6DIODE RECTIFIER070131 D7DIODE RECTIFIER070131 D8DIODE RECTIFIER070131 D9DIODE RECTIFIER070131 D10DIODE RECTIFIER070131 D11DIODE RECTIFIER070131 D12DIODE RECTIFIER070131 RadioFans.CN 收音机爱好者资料库 282

43、7 PARTS LIST cont D13DIODE SILICON070047 D14DIODE SILICON070047 D15DIODE RECTIFIER070131 D16DIODE ZENER 6.2V 5% 500MW070085 D17DIODE SILICON070047 D18DIODE SILICON070047 D19DIODE SILICON070047 D20DIODE ZENER 30V 1/2W 5%070161 D21DIODE SILICON070047 D22DIODE FAST RECOVER070156 D23DIODE FAST RECOVER07

44、0156 D24DIODE FAST RECOVER070156 D25DIODE FAST RECOVER070156 D26DIODE FAST RECOVER070156 D27DIODE FAST RECOVER070156 D28DIODE FAST RECOVER070156 D29DIODE FAST RECOVER070156 D30DIODE FAST RECOVER070156 D31DIODE FAST RECOVER070156 D32DIODE FAST RECOVER070156 D33DIODE FAST RECOVER070156 D34DIODE FAST R

45、ECOVER070156 D35DIODE FAST RECOVER070156 D36DIODE FAST RECOVER070156 D37DIODE FAST RECOVER070156 D38DIODE FAST RECOVER070156 D39DIODE FAST RECOVER070156 D40DIODE SILICON070047 D41DIODE SILICON070047 F10.5A 5x20 fuse IEC089092 FN1FILTER EMI180057 FN2FILTER EMI180057 FN3FILTER EMI180057 FN4FILTER EMI1

46、80057 FN5FILTER EMI180057 HS2HEATSINK TO-220080017 HS3HEATSINK TO-220080017 HS4HEATSINK TO-220080017 HS5HEATSINK TO-220080017 J1XLR FEMALE HORIZ PCB WITH LATCH 117814 J2JACK RCA ORANGE WITH GOLD117798 J3JACK RCA ORANGE WITH GOLD117798 J4JACK RCA ORANGE WITH GOLD117798 J56 PIN HEADER117828 J6CONN 23

47、PIN FFC117715 J7BLADE FASTON W/FEET117708 J8BLADE FASTON W/FEET117708 J9CONN PCB MOUNT POWER RED117719 J10CONN PCB MOUNT POWER RED117719 J11CONN PCB MOUNT POWER RED117719 J12CONN PCB MOUNT POWER RED117719 J13CONN 12 PIN FFC117720 J14HEADER 8 PIN MTA-156117717 J15JACK HEADPHONE STEREO 1/8IN117759 J16

48、JACK HEADPHONE STEREO 1/8IN117759 J17JACK HEADPHONE STEREO 1/8IN117759 J18JACK HEADPHONE STEREO 1/8IN117759 J1910 PIN HEADER117829 J20RECEPTACLE XLR MALE117686 J21JACK PHONO DUAL WHT/RED117692 J22RECEPTACLE XLR MALE117686 K1RELAY REED FORM 1C 5V 125 OHM087056 K2RELAY REED FORM 1C 5V 125 OHM087056 K3RELAY REED FORM