McIntosh-MX120-av-sm维修电路原理图.pdf

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1、MX120 SERVICE MANUAL Performance Specifications . 2 - 3 Notes . 3 Rear Panel . 3 Section Location . 4 Block Diagram . 5 - 8 Interconnection Diagram . 9 - 10 Display Schematic and PCB . 11 - 18 Surround Schematic and PCB . 19 - 32 Data Schematic and PCB. 33 - 36 S-Video Schematic and PCB. 37 - 40 Vid

2、eo Schematic and PCB. 41 - 44 Input Schematic and PCB . 45 - 50 Component Video Schematic and PCB . 51 - 54 HDMI Power Supply Schematic and PCB . 55 - 56 HDMI Module Schematic and PCB . 57 - 58 Balanced Output Schematic and PCB . 59 - 60 Parts List . 61 - 74 Repacking Instruction . 75 CONTENTS Seria

3、l Number XN1001 And Above SERIAL NO. XN1001 And Above MX120 A/V CONTROL CENTER PRELIMINARY RadioFans.CN 收音机爱好者资料库 PERFORMANCE SPECIFICATIONS 2 Audio Specifications Frequency Response Left, Center, Right, Left Surround, Right Surround, Left Back, Right Back: 0.5dB from 20Hz-20,000Hz Subwoofer1: 0.5d

4、B from 20Hz-140Hz Total Harmonic Distortion 0.005% maximum from 20Hz to 20,000Hz at rated output Signal To Noise Ratio Phono:86dB below 10mV input (A Weighted) High Level: 96dB below rated output (A Weighted) Rated Output Voltage 2.5V Unbalanced Outputs (Main) 5.0V Balanced Outputs (Main) Maximum Vo

5、ltage Output 9.5V Unbalanced 19V Balanced Output Impedance 100 ohms Unbalanced 200 ohms Balanced Input Impedance Phono:47k Ohms, 65pf High Level: 22k Ohms Unbalanced 50k Ohms Balanced Sensitivity for Rated Output Phono:5mV High Level: 500mV Unbalanced 1V Balanced Maximum Input Signal Phono:50mV High

6、 Level: 5V Unbalanced 10V Balanced Voltage Gain Phono to REC Out:40dB Phono to Output (Main):54dB High Level to REC Out:0dB High Level to Output (Main): 14dB Tone Controls Bass Control:12dB at 30Hz Treble Control: 12dB at 10,000Hz General Specifications Power Requirements 100 Volts, 50/60Hz at 65 wa

7、tts 110 Volts, 50/60Hz at 65 watts 120 Volts, 50/60Hz at 65 watts 220 Volts, 50/60Hz at 65 watts 230 Volts, 50/60Hz at 65 watts 240 Volts, 50/60Hz at 65 watts Note: Refer to the rear panel of the MX120 for the correct voltage. Overall Dimensions Width is 17-1/2 inches (44.45cm) Height is 7-5/8 inche

8、s (19.37cm) including feet Depth is 18-3/4 inches (47.63cm) including the Front Panel and Knobs Weight 27 pounds (12.25Kg) net, 46 pounds (20.87Kg) shipping Shipping Carton Dimensions Width is 25 inches (63.5cm) Depth is 27 inches (68.6cm) Height is 12 inches (30.5cm) 1 If any of the Channels have t

9、he Loudspeaker Setting of Small, the subwoofer has an electronic low pass filter with a 24dB per Octave rolloff in all modes except external. 1. Unless otherwise noted, all voltages indicated on the schematics are measured under the following conditions: a. AC input at 120 volts, 50/60Hz. b.All volt

10、ages are +/-10% with respect to ground. A high impedance (10 megaohm) voltmeter must be used. NOTES 2. On PC board drawings, Square pad indicates: a. Polarized Capacitors - Positive b.Diodes - Cathode c. Others - Pin 1 3. WARNING Parts marked with the symbol have critical characteristics. Use only r

11、eplacement parts recommended by the manufacturer. RadioFans.CN 收音机爱好者资料库 MX120 3 SECTION LOCATION REAR PANEL RadioFans.CN 收音机爱好者资料库 4 NOTES RadioFans.CN 收音机爱好者资料库 MX120 56 BLOCK DIAGRAM RadioFans.CN 收音机爱好者资料库 78 BLOCK DIAGRAM cont RadioFans.CN 收音机爱好者资料库 MX120 INTERCONNECT 910 1 RadioFans.CN 收音机

12、爱好者资料库 DISPLAY CONTROL SECTION SCH 7505752A 1112 RadioFans.CN 收音机爱好者资料库 MX120 1314 DISPLAY LED SECTION SCH 7505772B RadioFans.CN 收音机爱好者资料库 1516 DISPLAY KEYBOARD SECTION SCH 750568 2C 2A DISPLAY CONTROL SECTION PCB 750575 RadioFans.CN 收音机爱好者资料库 MX120 DISPLAY KEYBOARD SECTION PCB 750568 2C DISPLAY

13、 LED SECTION PCB 750577 2B 1718 RadioFans.CN 收音机爱好者资料库 1920 SURROUND 750570 SCH 1 OF 63 RadioFans.CN 收音机爱好者资料库 MX120 2122 SURROUND 750570 SCH 2 OF 63 RadioFans.CN 收音机爱好者资料库 2324 3SURROUND 750570 SCH 3 OF 6 RadioFans.CN 收音机爱好者资料库 MX120 2526 SURROUND 750570 SCH 4 OF 63 RadioFans.CN 收音机爱好者资料库 2728

14、 SURROUND 750570 SCH 5 OF 63 RadioFans.CN 收音机爱好者资料库 MX120 SURROUND 750570 SCH 6 OF 63 2930 RadioFans.CN 收音机爱好者资料库 SURROUND 750570 PCB3 3132 RadioFans.CN 收音机爱好者资料库 MX120 3334 DATA 750572 SCH 1 OF 24 RadioFans.CN 收音机爱好者资料库 3536 DATA 750572 SH 2 OF 2 And PCB4 RadioFans.CN 收音机爱好者资料库 MX120 3738 S-VI

15、DEO 750574 SCH 1 OF 25 RadioFans.CN 收音机爱好者资料库 3940 5S-VIDEO 750574 SH 2 OF 2 And PCB RadioFans.CN 收音机爱好者资料库 MX120 4142 VIDEO 750573 SCH6 RadioFans.CN 收音机爱好者资料库 4344 VIDEO 750573 PCB6 RadioFans.CN 收音机爱好者资料库 MX120 4546 INPUT 750571 SCH 1 OF 27 RadioFans.CN 收音机爱好者资料库 4748 INPUT 750571 SCH 2 OF 27

16、RadioFans.CN 收音机爱好者资料库 MX120 4950 INPUT 750571 PCB7 RadioFans.CN 收音机爱好者资料库 COMPONENT VIDEO 7505768 5152 RadioFans.CN 收音机爱好者资料库 MX120 5354 COMPONENT VIDEO 7505768 RadioFans.CN 收音机爱好者资料库 5556 HDMI POWER SUPPLY 7505999 RadioFans.CN 收音机爱好者资料库 MX120 5758 HDMI MODULE 75062310 RadioFans.CN 收音机爱好者资料库

17、59 BALANCED OUTPUT 750608 11 60 RadioFans.CN 收音机爱好者资料库 MX120 PARTS LIST INTERCONNECT Ref. No.DescriptionPart No. F1FUSE, 800MA SLO-BLO 5 X 20089141 TB1AC TERMINAL BLOCK074091 T1TRANSFORMER R-CORE POWER159340 DISPLAY PCB 750575 1 2A Ref. No.DescriptionPart No. 61 C1CAP MONO .01UF 50V 20% X7R061345 C

18、2CAP ELECT 1UF 50V066510 C14CAP MONO 33PF 200V 5% NPO T/R061347 C15CAP MONO 33PF 200V 5% NPO T/R061347 C25CAP MONO .1UF 50V 20% Z5U061346 C26CAP MONO .1UF 50V 20% Z5U061346 C27CAP MONO .1UF 50V 20% Z5U061346 C29CAP MONO .1UF 50V 20% Z5U061346 C31CAP MONO .1UF 50V 20% Z5U061346 C32CAP MONO .1UF 50V 2

19、0% Z5U061346 C33CAP ELECT 10UF 16V066580 C50CAP ELECT 10UF 16V066580 C51CAP MONO .1UF 50V 20% Z5U061346 C57CAP MONO .1UF 50V 20% Z5U061346 C58CAP MONO .1UF 50V 20% Z5U061346 C100CAP MONO .1UF 50V 20% Z5U061346 C170CAP MONO 100PF 100V 10% NPO061341 C200CAP MONO .01UF 50V 20% X7R061345 C201CAP MONO .0

20、1UF 50V 20% X7R061345 C204CAP MONO .01UF 50V 20% X7R061345 C205CAP MONO .01UF 50V 20% X7R061345 C206CAP MONO .01UF 50V 20% X7R061345 C207CAP MONO .01UF 50V 20% X7R061345 C210CAP MONO .01UF 50V 20% X7R061345 C211CAP MONO .01UF 50V 20% X7R061345 DS5LED GRN 5MM HI-INTENSITY058165 (DS5)SPACER LED112108

21、DS6LED GRN 5MM HI-INTENSITY058165 (DS6)SPACER LED112108 DS7LED GRN 5MM HI-INTENSITY058165 (DS7)SPACER LED112108 DS8LED GRN 5MM HI-INTENSITY058165 (DS8)SPACER LED112108 DS9LED GRN 5MM HI-INTENSITY058165 (DS9)SPACER LED112108 DS10LED GRN 5MM HI-INTENSITY058165 (DS10)SPACER LED112108 DS11LED GRN 5MM HI

22、-INTENSITY058165 (DS11)SPACER LED112108 D300DIODE SILICON070174 D301DIODE SILICON070174 D302DIODE SILICON070174 IC4IC OCTAL D TYPE FLIP FLOP133603 IC5IC QUAD ANALOG SWITCH HI SPEED133342 IC6IC OCTAL BUFFER 3-STATE133349 IC7IC OCTAL BUFFER 3-STATE133349 IC10IC QUAD ANALOG SWITCH HI SPEED133342 IC11IC

23、 SRAM133659 (IC11)SOCKET IC 28 PIN178126 IC13IC OCT 3-STT NONINVERTING133654 IC14IC PROGRAMMED MX120 133665133664 (IC14)SOCKET IC 32 PIN178165 IC15IC MICRO ROMLESS133386 (IC15)SOCKET IC 40-PIN178133 IC17IC QUAD ANALOG SWITCH HI SPEED133342 IC31IC NAND SCHMIT 2-IN X 4133595 IC32IC NAND SCHMIT 2-IN X

24、4133595 IC50IC 8 BIT A/D SERIAL OUTPUT133366 IC75IC CPU SUPERVISOR133639 IC20IC PROG DISPLAY CONTROL 133660133662 (IC20)IC SOCKET 84 PIN PLCC178185 J1CONN MALE 10 POS117219 J2SOCKET STRIP 14 PIN .025 SQ117644 J3CONN MALE 7 PIN117217 J5CONN 10 PIN BOXED HEADER117795 J7SOCKET STRIP 14 PIN .025 SQ11764

25、4 J8CONN MALE 10 POS117219 J9SOCKET STRIP 14 PIN .025 SQ117644 J9_CONN MALE 5 PIN 0.1 POST ASSY117216 J10CONN MALE 10 POS117219 J11CONN 18 PIN FFC117908 J12SOCKET STRIP 14 PIN .025 SQ117644 J19CONN MALE 10 POS117219 PCB1PC BD DISPLAY129839 Q1TRANSISTOR NPN SILICON132317 Q50TRANSISTOR NPN SILICON1323

26、17 R5RES NETWORK 8 X 330 ISO144679 R9RES NETWORK 2 X 22K ISO144689 R18RES MF 100 OHM 1% 1/4W144568 R19RES MF 47.5 OHM 1% 1/4W144642 R20RES MF 100 OHM 1% 1/4W144568 R21RES MF 182 OHM 1% 1/4W144579 R22RES MF 182 OHM 1% 1/4W144579 R23RES MF 47.5 OHM 1% 1/4W144642 R26RES NETWORK 2 X 22K ISO144689 R27RES

27、 NETWORK 2 X 22K ISO144689 R29RES NETWORK 2 X 22K ISO144689 R30RES MF 10 OHM 1% 1/4W144553 R31RES MF 4.99K 1% 1/4W144521 R32RES MF 100 OHM 1% 1/4W144568 R45RES NETWORK 2 X 22K ISO144689 R50RES NETWORK 9 X 1K ISO144685 R51RES NETWORK 9 X 1K ISO144685 R52RES NETWORK 9 X 1K ISO144685 R83RES FP 10 OHM 5

28、% 1/4W137105 R100RES MF 10K 1% 1/4W144504 R101RES MF 10K 1% 1/4W144504 R102RES NETWORK 4 X 22K BUSSED144668 R105RES MF 10K 1% 1/4W144504 R131RES NET 10K X 8 RES BUSSED144675 R150RES NETWORK 4 X 1K ISOLATED144500 R151RES NETWORK 4 X 1K ISOLATED144500 R170RES MF 4.99K 1% 1/4W144521 R171RES MF 4.99K 1%

29、 1/4W144521 R200RES NETWORK 2 X 22K ISO144689 R201RES MF 47.5K 1% 1/4W144526 R203RES NETWORK 2 X 22K ISO144689 R204RES NETWORK 2 X 22K ISO144689 R206RES NETWORK 2 X 22K ISO144689 R300RES MF 47.5K 1% 1/4W144526 TEST1CONN 4 PIN117215 U3IC PROGRAMMED 133336 IR MICRO133545 (U3)SOCKET IC 20 PIN178181 (IC

30、6)SOCKET IC 20 PIN178181 (IC7)SOCKET IC 20 PIN178181 RadioFans.CN 收音机爱好者资料库 62 DISPLAY PCB 750575 (Contd.) Ref. No.Description Part No. C4CAP MONO .1UF 50V 20% Z5U061346 C5CAP MONO .1UF 50V 20% Z5U061346 C6CAP MONO .1UF 50V 20% Z5U061346 C10CAP ELECT 47UF 35V066446 C11CAP MONO 1000PF 50V 10% NPO061

31、344 C12CAP MONO .1UF 50V 20% Z5U061346 C16CAP MONO .1UF 50V 20% Z5U061346 C17CAP MONO 1000PF 50V 10% NPO061344 C19CAP ELECT 47UF 35V066446 C20CAP ELECT 47UF 35V066446 C21CAP ELECT 10UF 50V066445 DS1DISPLAY VFD 12 CHARACTER058182 DS2LED SQUARE RED058109 DS3LED SQUARE RED058109 DS4LED SQUARE RED058109

32、 DS5LED SQUARE RED058109 DS6LED SQUARE RED058109 DS7LED SQUARE RED058109 DS8LED SQUARE RED058109 DS9LED SQUARE RED058109 DS10LED SQUARE RED058109 DS11LED SQUARE RED058109 DS12LED SQUARE RED058109 DS13LED SQUARE RED058109 DS14LED SQUARE RED058109 DS15LED SQUARE RED058109 DS16LED SQUARE RED058109 DS17

33、LED SQUARE RED058109 DS34LED ARRAY(5) YELLOW RECTANGLE058127 (DS34)CONN SOCKET SIP 10 PIN117876 DS38LED ARRAY(5) YELLOW RECTANGLE058127 (DS38)CONN SOCKET SIP 10 PIN117876 DS41LED ARRAY(5) YELLOW RECTANGLE058127 (DS41)CONN SOCKET SIP 10 PIN117876 DS42LED ARRAY(5) YELLOW RECTANGLE058127 (DS42)CONN SOC

34、KET SIP 10 PIN117876 DS43LED ARRAY(5) YELLOW RECTANGLE058127 (DS43)CONN SOCKET SIP 10 PIN117876 DS44LED ARRAY(5) YELLOW RECTANGLE058127 (DS44)CONN SOCKET SIP 10 PIN117876 DS45LED ARRAY(5) YELLOW RECTANGLE058127 (DS45)CONN SOCKET SIP 10 PIN117876 DS46LED ARRAY(5) YELLOW RECTANGLE058127 (DS46)CONN SOC

35、KET SIP 10 PIN117876 IC2IC VFD DISPLAY DRIVER133549 (IC2)SOCKET IC 40-PIN178133 IC3IC DISPLAY DRIVER 4 DIGIT LED133663 (IC3)SOCKET IC 40-PIN178133 IC12IC DISPLAY DRIVER 4 DIGIT LED133663 (IC12)SOCKET IC 40-PIN178133 J2TERMINAL STRIP 14 PIN .025 SQ117647 J7TERMINAL STRIP 14 PIN .025 SQ117647 J9TERMIN

36、AL STRIP 14 PIN .025 SQ117647 J12TERMINAL STRIP 14 PIN .025 SQ117647 LED PCB 7505772B MOLD1MOLD FUNCTION LED017865 MOLD3MOLD LED INDICATOR017866 MOLD4MOLD FUNCTION LED017865 MOLD5MOLD FUNCTION LED017865 MOLD6MOLD FUNCTION LED017865 MOLD7MOLD FUNCTION LED017865 MOLD8MOLD FUNCTION LED017865 MOLD9MOLD

37、FUNCTION LED017865 MOLD10MOLD FUNCTION LED017865 MOLD11MOLD LED INDICATOR017866 MOLD12MOLD LED INDICATOR017866 MOLD13MOLD LED INDICATOR017866 PCB1PC BD LED129786 PC BD SWITCH129787 Q2TRANSISTOR PNP SILICON132304 R1RES MF 47.5K 1% 1/4W144526 R6RES MF 3.32K 1% 1/4W144518 R8RES MF 10 OHM 1% 1/4W144553

38、R10RES NETWORK 5 X 47K BUSSED144499 R12RES NETWORK 9 X 47K BUSSED144673 R13RES NETWORK 9 X 47K BUSSED144673 R14RES NETWORK 9 X 47K BUSSED144673 R15RES MF 4.99K 1% 1/4W144521 R18RES MF 4.99K 1% 1/4W144521 R25RES FP 47 OHM 5% 1/4W137106 S21SWITCH ROT ENCODER 24 DETENT146255 S22SWITCH ROT ENCODER 24 DE

39、TENT146255 S24SWITCH ROT ENCODER 24 DETENT146255 S25SWITCH ROT ENCODER NO DETENT146256 ASSY INSERTION PCB LED702421 DOUBLE COATED MTG-TAPE 1/16 TK 094409 Ref. No.DescriptionPart No. KEYBOARD PCB 7505682C C13CAP MONO .1UF 50V 20% Z5U061346 C24CAP ELECT 47UF 35V066446 DS11LED SQUARE RED058109 (DS11)LE

40、D SPACER .220 LENGTH163001 DS12LED SQUARE RED058109 (DS12)LED SPACER .220 LENGTH163001 DS36LED SQUARE RED058109 (DS36)LED SPACER .220 LENGTH163001 J2CONN 18 PIN FFC117908 R16RES MF 100 OHM 1% 1/4W144568 R17RES MF 332 OHM 1% 1/4W144646 S1SWITCH TACT150059 S2SWITCH TACT150059 S5SWITCH TACT150058 S7SWI

41、TCH TACT150058 S9SWITCH TACT150058 S10SWITCH TACT150058 S11SWITCH TACT150058 S12SWITCH TACT150058 S13SWITCH TACT150058 S14SWITCH TACT150058 S15SWITCH TACT150058 S16SWITCH TACT150058 S17SWITCH SLIDE DPDT148076 SENSORSENSOR IR 38KHZ121046 SHRNK TUBNG 3/8” LONG (077041)077054 PC BD KEYBOARD129780 PARTS

42、 LIST Cont Y1CRYSTAL 11.0592MHZ180051 CUTLIST184121 ASSY INSERTION PCB DISPLAY702417 RadioFans.CN 收音机爱好者资料库 MX120 63 SURROUND PCB 750570 Ref. No.DescriptionPart No. 3 PARTS LIST Cont Ref. No.DescriptionPart No. BRKT1BRACKET PCB CARD MOUNTING003611 C1CAP ELECT 220UF 50V 20%066254 C2CAP ELECT 100UF 2

43、5V066573 C3CAP MONO .1UF 50V 20% Z5U061346 C4CAP MONO .1UF 50V 20% Z5U061346 C5CAP MONO .1UF 50V 20% Z5U061346 C6CAP MONO .1UF 50V 20% Z5U061346 C7CAP MONO .1UF 50V 20% Z5U061346 C8CAP MONO .1UF 50V 20% Z5U061346 C9CAP MONO .1UF 50V 20% Z5U061346 C10CAP MONO .1UF 50V 20% Z5U061346 C11CAP MONO .1UF 5

44、0V 20% Z5U061346 C12CAP MONO .1UF 50V 20% Z5U061346 C13CAP MONO .1UF 50V 20% Z5U061346 C14CAP MONO .1UF 50V 20% Z5U061346 C15CAP MONO .1UF 50V 20% Z5U061346 C16CAP MONO 22PF 200V 10% NPO061339 C18CAP MONO .1UF 50V 20% Z5U061346 C19CAP MONO .1UF 50V 20% Z5U061346 C20CAP MONO .1UF 50V 20% Z5U061346 C2

45、1CAP MONO .1UF 50V 20% Z5U061346 C22CAP MONO .1UF 50V 20% Z5U061346 C23CAP MONO .1UF 50V 20% Z5U061346 C24CAP MONO .1UF 50V 20% Z5U061346 C25CAP MONO .1UF 50V 20% Z5U061346 C26CAP MONO .1UF 50V 20% Z5U061346 C27CAP MONO .1UF 50V 20% Z5U061346 C28CAP MONO .1UF 50V 20% Z5U061346 C29CAP MONO .1UF 50V 2

46、0% Z5U061346 C30CAP MONO .1UF 50V 20% Z5U061346 C32CAP MONO .1UF 50V 20% Z5U061346 C36CAP MONO 22PF 200V 10% NPO061339 C37CAP MONO 22PF 200V 10% NPO061339 C38CAP MONO 22PF 200V 10% NPO061339 C39CAP MONO 22PF 200V 10% NPO061339 C40CAP MONO 22PF 200V 10% NPO061339 C41CAP MONO 22PF 200V 10% NPO061339 C

47、42CAP MONO 22PF 200V 10% NPO061339 C43CAP MONO 22PF 200V 10% NPO061339 C44CAP MONO 22PF 200V 10% NPO061339 C45CAP MONO 22PF 200V 10% NPO061339 C46CAP MONO 22PF 200V 10% NPO061339 C47CAP MONO 22PF 200V 10% NPO061339 C48CAP MONO 22PF 200V 10% NPO061339 C49CAP MONO 22PF 200V 10% NPO061339 C50CAP MONO 22PF 200V 10% NPO061339 C53CAP ELECT 3300UF 35V066509 C55CAP ELECT 3300UF 35V066509 C56CAP ELECT 3300UF 35V066509 C58CAP ELECT 18000UF 16V066460 C59CAP ELECT 10UF 50V066445 C60CAP ELECT 10UF 50V066445 C61CA