McIntosh-MX120-av-sm 维修电路原理图.pdf

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1、MX120SERVICE MANUALPerformance Specifications . 2 - 3Notes . 3Rear Panel . 3Section Location . 4Block Diagram . 5 - 8Interconnection Diagram . 9 - 10Display Schematic and PCB . 11 - 18Surround Schematic and PCB . 19 - 32Data Schematic and PCB. 33 - 36S-Video Schematic and PCB. 37 - 40Video Schematic

2、 and PCB. 41 - 44Input Schematic and PCB . 45 - 50Component Video Schematic and PCB . 51 - 54HDMI Power Supply Schematic and PCB . 55 - 56HDMI Module Schematic and PCB . 57 - 58Balanced Output Schematic and PCB . 59 - 60Parts List . 61 - 74Repacking Instruction . 75CONTENTSSerial Number XN1001 And A

3、boveSERIAL NO. XN1001 And AboveMX120A/V CONTROL CENTERPRELIMINARYRadioFans.CN 收音机爱 好者资料库PERFORMANCE SPECIFICATIONS2Audio SpecificationsFrequency ResponseLeft, Center, Right,Left Surround,Right Surround,Left Back, Right Back:0.5dB from 20Hz-20,000HzSubwoofer1:0.5dB from 20Hz-140HzTotal Harmonic Disto

4、rtion0.005% maximum from 20Hz to 20,000Hz at rated outputSignal To Noise RatioPhono:86dB below 10mV input (A Weighted)High Level: 96dB below rated output (A Weighted)Rated Output Voltage2.5V Unbalanced Outputs (Main)5.0V Balanced Outputs (Main)Maximum Voltage Output9.5V Unbalanced19V BalancedOutput

5、Impedance100 ohms Unbalanced200 ohms BalancedInput ImpedancePhono:47k Ohms, 65pfHigh Level: 22k Ohms Unbalanced50k Ohms BalancedSensitivity for Rated OutputPhono:5mVHigh Level: 500mV Unbalanced1V BalancedMaximum Input SignalPhono:50mVHigh Level: 5V Unbalanced10V BalancedVoltage GainPhono to REC Out:

6、40dBPhono to Output (Main):54dBHigh Level to REC Out:0dBHigh Level to Output (Main): 14dBTone ControlsBass Control:12dB at 30HzTreble Control: 12dB at 10,000HzGeneral SpecificationsPower Requirements100 Volts, 50/60Hz at 65 watts110 Volts, 50/60Hz at 65 watts120 Volts, 50/60Hz at 65 watts220 Volts,

7、50/60Hz at 65 watts230 Volts, 50/60Hz at 65 watts240 Volts, 50/60Hz at 65 wattsNote: Refer to the rear panel of the MX120 for thecorrect voltage.Overall DimensionsWidth is 17-1/2 inches (44.45cm)Height is 7-5/8 inches (19.37cm) including feetDepth is 18-3/4 inches (47.63cm) including the FrontPanel

8、and KnobsWeight27 pounds (12.25Kg) net, 46 pounds (20.87Kg) shippingShipping Carton DimensionsWidth is 25 inches (63.5cm)Depth is 27 inches (68.6cm)Height is 12 inches (30.5cm)1 If any of the Channels have the Loudspeaker Setting ofSmall, the subwoofer has an electronic low pass filter with a24dB pe

9、r Octave rolloff in all modes except external.1. Unless otherwise noted, all voltages indicated onthe schematics are measured under the followingconditions:a. AC input at 120 volts, 50/60Hz.b.All voltages are +/-10% with respect to ground.A high impedance (10 megaohm) voltmeter mustbe used.NOTES2. O

10、n PC board drawings, Square pad indicates:a. Polarized Capacitors - Positiveb.Diodes - Cathodec. Others - Pin 13. WARNINGParts marked with the symbol havecritical characteristics. Use only replacementparts recommended by the manufacturer.RadioFans.CN 收音机爱 好者资料库MX1203SECTION LOCATIONREAR PANEL4NOTESM

11、X12056BLOCK DIAGRAM78BLOCK DIAGRAM contMX120INTERCONNECT9101DISPLAY CONTROL SECTION SCH 7505752A1112MX1201314DISPLAY LED SECTION SCH 7505772B1516DISPLAY KEYBOARD SECTION SCH 7505682C2ADISPLAY CONTROL SECTION PCB 750575MX120DISPLAY KEYBOARD SECTION PCB 7505682CDISPLAY LED SECTION PCB 7505772B17181920

12、SURROUND 750570 SCH 1 OF 63MX1202122SURROUND 750570 SCH 2 OF 6323243SURROUND 750570 SCH 3 OF 6MX1202526SURROUND 750570 SCH 4 OF 632728SURROUND 750570 SCH 5 OF 63MX120SURROUND 750570 SCH 6 OF 632930SURROUND 750570 PCB33132MX1203334DATA 750572 SCH 1 OF 243536DATA 750572 SH 2 OF 2 And PCB4MX1203738S-VI

13、DEO 750574 SCH 1 OF 2539405S-VIDEO 750574 SH 2 OF 2 And PCBMX1204142VIDEO 750573 SCH64344VIDEO 750573 PCB6MX1204546INPUT 750571 SCH 1 OF 274748INPUT 750571 SCH 2 OF 27MX1204950INPUT 750571 PCB7COMPONENT VIDEO 75057685152MX1205354COMPONENT VIDEO 75057685556HDMI POWER SUPPLY 7505999MX1205758HDMI MODUL

14、E 7506231059BALANCED OUTPUT 7506081160MX120PARTS LISTINTERCONNECTRef. No.DescriptionPart No.F1FUSE, 800MA SLO-BLO 5 X 20089141TB1AC TERMINAL BLOCK074091T1TRANSFORMER R-CORE POWER159340DISPLAY PCB 75057512ARef. No.DescriptionPart No.61C1CAP MONO .01UF 50V 20% X7R061345C2CAP ELECT 1UF 50V066510C14CAP

15、MONO 33PF 200V 5% NPO T/R061347C15CAP MONO 33PF 200V 5% NPO T/R061347C25CAP MONO .1UF 50V 20% Z5U061346C26CAP MONO .1UF 50V 20% Z5U061346C27CAP MONO .1UF 50V 20% Z5U061346C29CAP MONO .1UF 50V 20% Z5U061346C31CAP MONO .1UF 50V 20% Z5U061346C32CAP MONO .1UF 50V 20% Z5U061346C33CAP ELECT 10UF 16V066580

16、C50CAP ELECT 10UF 16V066580C51CAP MONO .1UF 50V 20% Z5U061346C57CAP MONO .1UF 50V 20% Z5U061346C58CAP MONO .1UF 50V 20% Z5U061346C100CAP MONO .1UF 50V 20% Z5U061346C170CAP MONO 100PF 100V 10% NPO061341C200CAP MONO .01UF 50V 20% X7R061345C201CAP MONO .01UF 50V 20% X7R061345C204CAP MONO .01UF 50V 20%

17、X7R061345C205CAP MONO .01UF 50V 20% X7R061345C206CAP MONO .01UF 50V 20% X7R061345C207CAP MONO .01UF 50V 20% X7R061345C210CAP MONO .01UF 50V 20% X7R061345C211CAP MONO .01UF 50V 20% X7R061345DS5LED GRN 5MM HI-INTENSITY058165(DS5)SPACER LED112108DS6LED GRN 5MM HI-INTENSITY058165(DS6)SPACER LED112108DS7

18、LED GRN 5MM HI-INTENSITY058165(DS7)SPACER LED112108DS8LED GRN 5MM HI-INTENSITY058165(DS8)SPACER LED112108DS9LED GRN 5MM HI-INTENSITY058165(DS9)SPACER LED112108DS10LED GRN 5MM HI-INTENSITY058165(DS10)SPACER LED112108DS11LED GRN 5MM HI-INTENSITY058165(DS11)SPACER LED112108D300DIODE SILICON070174D301DI

19、ODE SILICON070174D302DIODE SILICON070174IC4IC OCTAL D TYPE FLIP FLOP133603IC5IC QUAD ANALOG SWITCH HI SPEED133342IC6IC OCTAL BUFFER 3-STATE133349IC7IC OCTAL BUFFER 3-STATE133349IC10IC QUAD ANALOG SWITCH HI SPEED133342IC11IC SRAM133659(IC11)SOCKET IC 28 PIN178126IC13IC OCT 3-STT NONINVERTING133654IC1

20、4IC PROGRAMMED MX120 133665133664(IC14)SOCKET IC 32 PIN178165IC15IC MICRO ROMLESS133386(IC15)SOCKET IC 40-PIN178133IC17IC QUAD ANALOG SWITCH HI SPEED133342IC31IC NAND SCHMIT 2-IN X 4133595IC32IC NAND SCHMIT 2-IN X 4133595IC50IC 8 BIT A/D SERIAL OUTPUT133366IC75IC CPU SUPERVISOR133639IC20IC PROG DISP

21、LAY CONTROL 133660133662(IC20)IC SOCKET 84 PIN PLCC178185J1CONN MALE 10 POS117219J2SOCKET STRIP 14 PIN .025 SQ117644J3CONN MALE 7 PIN117217J5CONN 10 PIN BOXED HEADER117795J7SOCKET STRIP 14 PIN .025 SQ117644J8CONN MALE 10 POS117219J9SOCKET STRIP 14 PIN .025 SQ117644J9_CONN MALE 5 PIN 0.1 POST ASSY117

22、216J10CONN MALE 10 POS117219J11CONN 18 PIN FFC117908J12SOCKET STRIP 14 PIN .025 SQ117644J19CONN MALE 10 POS117219PCB1PC BD DISPLAY129839Q1TRANSISTOR NPN SILICON132317Q50TRANSISTOR NPN SILICON132317R5RES NETWORK 8 X 330 ISO144679R9RES NETWORK 2 X 22K ISO144689R18RES MF 100 OHM 1% 1/4W144568R19RES MF

23、47.5 OHM 1% 1/4W144642R20RES MF 100 OHM 1% 1/4W144568R21RES MF 182 OHM 1% 1/4W144579R22RES MF 182 OHM 1% 1/4W144579R23RES MF 47.5 OHM 1% 1/4W144642R26RES NETWORK 2 X 22K ISO144689R27RES NETWORK 2 X 22K ISO144689R29RES NETWORK 2 X 22K ISO144689R30RES MF 10 OHM 1% 1/4W144553R31RES MF 4.99K 1% 1/4W1445

24、21R32RES MF 100 OHM 1% 1/4W144568R45RES NETWORK 2 X 22K ISO144689R50RES NETWORK 9 X 1K ISO144685R51RES NETWORK 9 X 1K ISO144685R52RES NETWORK 9 X 1K ISO144685R83RES FP 10 OHM 5% 1/4W137105R100RES MF 10K 1% 1/4W144504R101RES MF 10K 1% 1/4W144504R102RES NETWORK 4 X 22K BUSSED144668R105RES MF 10K 1% 1/

25、4W144504R131RES NET 10K X 8 RES BUSSED144675R150RES NETWORK 4 X 1K ISOLATED144500R151RES NETWORK 4 X 1K ISOLATED144500R170RES MF 4.99K 1% 1/4W144521R171RES MF 4.99K 1% 1/4W144521R200RES NETWORK 2 X 22K ISO144689R201RES MF 47.5K 1% 1/4W144526R203RES NETWORK 2 X 22K ISO144689R204RES NETWORK 2 X 22K IS

26、O144689R206RES NETWORK 2 X 22K ISO144689R300RES MF 47.5K 1% 1/4W144526TEST1CONN 4 PIN117215U3IC PROGRAMMED 133336 IR MICRO133545(U3)SOCKET IC 20 PIN178181(IC6)SOCKET IC 20 PIN178181(IC7)SOCKET IC 20 PIN17818162DISPLAY PCB 750575 (Contd.)Ref. No.Description Part No.C4CAP MONO .1UF 50V 20% Z5U061346C5

27、CAP MONO .1UF 50V 20% Z5U061346C6CAP MONO .1UF 50V 20% Z5U061346C10CAP ELECT 47UF 35V066446C11CAP MONO 1000PF 50V 10% NPO061344C12CAP MONO .1UF 50V 20% Z5U061346C16CAP MONO .1UF 50V 20% Z5U061346C17CAP MONO 1000PF 50V 10% NPO061344C19CAP ELECT 47UF 35V066446C20CAP ELECT 47UF 35V066446C21CAP ELECT 10

28、UF 50V066445DS1DISPLAY VFD 12 CHARACTER058182DS2LED SQUARE RED058109DS3LED SQUARE RED058109DS4LED SQUARE RED058109DS5LED SQUARE RED058109DS6LED SQUARE RED058109DS7LED SQUARE RED058109DS8LED SQUARE RED058109DS9LED SQUARE RED058109DS10LED SQUARE RED058109DS11LED SQUARE RED058109DS12LED SQUARE RED05810

29、9DS13LED SQUARE RED058109DS14LED SQUARE RED058109DS15LED SQUARE RED058109DS16LED SQUARE RED058109DS17LED SQUARE RED058109DS34LED ARRAY(5) YELLOW RECTANGLE058127(DS34)CONN SOCKET SIP 10 PIN117876DS38LED ARRAY(5) YELLOW RECTANGLE058127(DS38)CONN SOCKET SIP 10 PIN117876DS41LED ARRAY(5) YELLOW RECTANGLE

30、058127(DS41)CONN SOCKET SIP 10 PIN117876DS42LED ARRAY(5) YELLOW RECTANGLE058127(DS42)CONN SOCKET SIP 10 PIN117876DS43LED ARRAY(5) YELLOW RECTANGLE058127(DS43)CONN SOCKET SIP 10 PIN117876DS44LED ARRAY(5) YELLOW RECTANGLE058127(DS44)CONN SOCKET SIP 10 PIN117876DS45LED ARRAY(5) YELLOW RECTANGLE058127(D

31、S45)CONN SOCKET SIP 10 PIN117876DS46LED ARRAY(5) YELLOW RECTANGLE058127(DS46)CONN SOCKET SIP 10 PIN117876IC2IC VFD DISPLAY DRIVER133549(IC2)SOCKET IC 40-PIN178133IC3IC DISPLAY DRIVER 4 DIGIT LED133663(IC3)SOCKET IC 40-PIN178133IC12IC DISPLAY DRIVER 4 DIGIT LED133663(IC12)SOCKET IC 40-PIN178133J2TERM

32、INAL STRIP 14 PIN .025 SQ117647J7TERMINAL STRIP 14 PIN .025 SQ117647J9TERMINAL STRIP 14 PIN .025 SQ117647J12TERMINAL STRIP 14 PIN .025 SQ117647LED PCB 7505772BMOLD1MOLD FUNCTION LED017865MOLD3MOLD LED INDICATOR017866MOLD4MOLD FUNCTION LED017865MOLD5MOLD FUNCTION LED017865MOLD6MOLD FUNCTION LED017865

33、MOLD7MOLD FUNCTION LED017865MOLD8MOLD FUNCTION LED017865MOLD9MOLD FUNCTION LED017865MOLD10MOLD FUNCTION LED017865MOLD11MOLD LED INDICATOR017866MOLD12MOLD LED INDICATOR017866MOLD13MOLD LED INDICATOR017866PCB1PC BD LED129786PC BD SWITCH129787Q2TRANSISTOR PNP SILICON132304R1RES MF 47.5K 1% 1/4W144526R6

34、RES MF 3.32K 1% 1/4W144518R8RES MF 10 OHM 1% 1/4W144553R10RES NETWORK 5 X 47K BUSSED144499R12RES NETWORK 9 X 47K BUSSED144673R13RES NETWORK 9 X 47K BUSSED144673R14RES NETWORK 9 X 47K BUSSED144673R15RES MF 4.99K 1% 1/4W144521R18RES MF 4.99K 1% 1/4W144521R25RES FP 47 OHM 5% 1/4W137106S21SWITCH ROT ENC

35、ODER 24 DETENT146255S22SWITCH ROT ENCODER 24 DETENT146255S24SWITCH ROT ENCODER 24 DETENT146255S25SWITCH ROT ENCODER NO DETENT146256ASSY INSERTION PCB LED702421DOUBLE COATED MTG-TAPE 1/16 TK 094409Ref. No.DescriptionPart No.KEYBOARD PCB 7505682CC13CAP MONO .1UF 50V 20% Z5U061346C24CAP ELECT 47UF 35V0

36、66446DS11LED SQUARE RED058109(DS11)LED SPACER .220 LENGTH163001DS12LED SQUARE RED058109(DS12)LED SPACER .220 LENGTH163001DS36LED SQUARE RED058109(DS36)LED SPACER .220 LENGTH163001J2CONN 18 PIN FFC117908R16RES MF 100 OHM 1% 1/4W144568R17RES MF 332 OHM 1% 1/4W144646S1SWITCH TACT150059S2SWITCH TACT1500

37、59S5SWITCH TACT150058S7SWITCH TACT150058S9SWITCH TACT150058S10SWITCH TACT150058S11SWITCH TACT150058S12SWITCH TACT150058S13SWITCH TACT150058S14SWITCH TACT150058S15SWITCH TACT150058S16SWITCH TACT150058S17SWITCH SLIDE DPDT148076SENSORSENSOR IR 38KHZ121046SHRNK TUBNG 3/8” LONG (077041)077054PC BD KEYBOA

38、RD129780PARTS LIST ContY1CRYSTAL 11.0592MHZ180051CUTLIST184121ASSY INSERTION PCB DISPLAY702417MX12063SURROUND PCB 750570Ref. No.DescriptionPart No.3PARTS LIST ContRef. No.DescriptionPart No.BRKT1BRACKET PCB CARD MOUNTING003611C1CAP ELECT 220UF 50V 20%066254C2CAP ELECT 100UF 25V066573C3CAP MONO .1UF

39、50V 20% Z5U061346C4CAP MONO .1UF 50V 20% Z5U061346C5CAP MONO .1UF 50V 20% Z5U061346C6CAP MONO .1UF 50V 20% Z5U061346C7CAP MONO .1UF 50V 20% Z5U061346C8CAP MONO .1UF 50V 20% Z5U061346C9CAP MONO .1UF 50V 20% Z5U061346C10CAP MONO .1UF 50V 20% Z5U061346C11CAP MONO .1UF 50V 20% Z5U061346C12CAP MONO .1UF

40、50V 20% Z5U061346C13CAP MONO .1UF 50V 20% Z5U061346C14CAP MONO .1UF 50V 20% Z5U061346C15CAP MONO .1UF 50V 20% Z5U061346C16CAP MONO 22PF 200V 10% NPO061339C18CAP MONO .1UF 50V 20% Z5U061346C19CAP MONO .1UF 50V 20% Z5U061346C20CAP MONO .1UF 50V 20% Z5U061346C21CAP MONO .1UF 50V 20% Z5U061346C22CAP MON

41、O .1UF 50V 20% Z5U061346C23CAP MONO .1UF 50V 20% Z5U061346C24CAP MONO .1UF 50V 20% Z5U061346C25CAP MONO .1UF 50V 20% Z5U061346C26CAP MONO .1UF 50V 20% Z5U061346C27CAP MONO .1UF 50V 20% Z5U061346C28CAP MONO .1UF 50V 20% Z5U061346C29CAP MONO .1UF 50V 20% Z5U061346C30CAP MONO .1UF 50V 20% Z5U061346C32C

42、AP MONO .1UF 50V 20% Z5U061346C36CAP MONO 22PF 200V 10% NPO061339C37CAP MONO 22PF 200V 10% NPO061339C38CAP MONO 22PF 200V 10% NPO061339C39CAP MONO 22PF 200V 10% NPO061339C40CAP MONO 22PF 200V 10% NPO061339C41CAP MONO 22PF 200V 10% NPO061339C42CAP MONO 22PF 200V 10% NPO061339C43CAP MONO 22PF 200V 10%

43、 NPO061339C44CAP MONO 22PF 200V 10% NPO061339C45CAP MONO 22PF 200V 10% NPO061339C46CAP MONO 22PF 200V 10% NPO061339C47CAP MONO 22PF 200V 10% NPO061339C48CAP MONO 22PF 200V 10% NPO061339C49CAP MONO 22PF 200V 10% NPO061339C50CAP MONO 22PF 200V 10% NPO061339C53CAP ELECT 3300UF 35V066509C55CAP ELECT 330

44、0UF 35V066509C56CAP ELECT 3300UF 35V066509C58CAP ELECT 18000UF 16V066460C59CAP ELECT 10UF 50V066445C60CAP ELECT 10UF 50V066445C61CAP ELECT 10UF 16V066580C62CAP ELECT 10UF 16V066580C65CAP ELECT 10UF 16V066580C66CAP ELECT 10UF 16V066580C67CAP ELECT 10UF 16V066580C68CAP ELECT 10UF 16V066580C69CAP ELECT

45、 10UF 16V066580C70CAP ELECT 10UF 16V066580C71CAP ELECT 10UF 16V066580C72CAP ELECT 10UF 16V066580C73CAP ELECT 10UF 16V066580C77CAP ELECT 10UF 16V066580C79CAP ELECT 10UF 16V066580C80CAP ELECT 10UF 16V066580C81CAP ELECT 10UF 16V066580C82CAP ELECT 10UF 16V066580C83CAP ELECT 10UF 16V066580C84CAP ELECT 10

46、UF 16V066580C85CAP ELECT 10UF 16V066580C86CAP ELECT 10UF 16V066580C87CAP ELECT 10UF 16V066580C88CAP ELECT 10UF 16V066580C89CAP ELECT 10UF 16V066580C94CAP ELECT 10UF 16V066580C95CAP ELECT 10UF 16V066580C96CAP ELECT 10UF 16V066580C97CAP ELECT 10UF 16V066580C98CAP MONO 100PF 100V 10% NPO061341C99CAP MO

47、NO 100PF 100V 10% NPO061341C100CAP ELECT 10UF 16V066580C101CAP ELECT 10UF 16V066580C102CAP ELECT 10UF 16V066580C103CAP ELECT 10UF 16V066580C104CAP ELECT 10UF 16V066580C105CAP ELECT 10UF 16V066580C106CAP ELECT 10UF 16V066580C107CAP ELECT 10UF 16V066580C110CAP MONO .1UF 50V 20% Z5U061346C111CAP MONO .

48、1UF 50V 20% Z5U061346C113CAP MONO .1UF 50V 20% Z5U061346C114CAP MONO .1UF 50V 20% Z5U061346C115CAP MONO .1UF 50V 20% Z5U061346C116CAP MONO .1UF 50V 20% Z5U061346C119CAP MONO .1UF 50V 20% Z5U061346C120CAP MONO .1UF 50V 20% Z5U061346C121CAP MPF 0.0022UF 5% 63VDC064454C128CAP ELECT 1000UF 25V066513C129

49、CAP MONO .1UF 50V 20% Z5U061346C130CAP MONO .1UF 50V 20% Z5U061346C131CAP MONO .1UF 50V 20% Z5U061346C132CAP MPF 0.0022UF 5% 63VDC064454C133CAP MONO .1UF 50V 20% Z5U061346C134CAP MONO .1UF 50V 20% Z5U061346C135CAP MPF 0.0022UF 5% 63VDC064454C137CAP MPF 0.1UF 5% 63VDC064325C138CAP MPF 0.047UF 5% 63VD

50、C064320C139CAP MPF 0.047UF 5% 63VDC064320C140CAP MPF 0.1UF 5% 63VDC064325C141CAP MPF 0.047UF 5% 63VDC064320C142CAP MPF 0.047UF 5% 63VDC064320C143CAP MPF 0.047UF 5% 63VDC064320C144CAP MPF 0.047UF 5% 63VDC064320C151CAP MONO .1UF 50V 20% Z5U061346C153CAP MONO 22PF 200V 10% NPO061339C154CAP MONO 100PF 1