McIntosh-MX119-av-sm 维修电路原理图.pdf

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1、SERVICE 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 and

2、PCB. 41 - 44Input Schematic and PCB . 45 - 50Component Video Schematic and PCB . 51 - 54Tuner Schematic and PCB . 55 - 56Tuner AM/FM Alignment Procedure. 57 - 58RAA1 Schematic and PCB . 59 - 60Parts List . 61 - 76Exploded Views and Parts Lists . 77 - 80Repacking Instruction . 81CONTENTSA/V CONTROL C

3、ENTERSerial Number VS1001 And AboveSERIAL NO. VS1001 And AboveRadioFans.CN 收音机爱 好者资料库PERFORMANCE SPECIFICATIONSFM TunerUseable Sensitivity14dBF which is 1.4uV across 75 ohms50dB Quieting SensitivityMono: 19dBF which is 2.4uV across 75 ohmsStereo: 35dBF which is 15uV across 75 ohmsSignal To Noise Rat

4、ioMono: 75dBStereo: 70dBFrequency ResponseMono: +0, -1dB from 20 to 15,000HzStereo: +0, -1dB from 20 to 15,000HzHarmonic DistortionMono: 0.3% at 100Hz, 0.3% at 1,000Hz, 0.3% at 10,000HzStereo: 0.45% at 100Hz, 0.45% at 1,000Hz, 0.65% at 10,000HzIntermodulaton DistortionMono: 0.25%Stereo: 0.45%Capture

5、 Ratio1.2dBAlternate Channel Selectivity75dBSpurious Response100dBImage Response75dBRF Intermodulation65dBStereo Separation45dB at 100Hz, 45dB at 1,000Hz, 35dB at 10,000HzSCA Rejection65dBAM TunerSensitivity20uV external antenna inputSignal To Noise Ratio48dB at 30% modulation58dB at 100% modulation

6、Harmonic Distortion0.5% maximum at 50% modulationFrequency Response50Hz to 6kHz NRSCAdjacent Channel Selectivity45dB minimum IHFImage Rejection65dB minimum from 540 to 1600kHzIF Rejection80dB minimumAudioFrequency ResponseStereo: Left and Right Small speakers: 80Hz-20,000HzSubwoofer: 20Hz-80HzLeft a

7、nd Right Large speakers: 20Hz-20,000HzSubwoofer: OFFPro-Logic II: (Movie Processing Mode)Left, Center, Right, Small speakers: 80Hz-20,000HzSurround Small speakers: 80Hz-7kHzSubwoofer: 20Hz-80Hz(Music Processing Mode)Left, Center, Right, Large speakers: 20Hz-20,000HzSurround Large speakers: 20Hz-20,0

8、00HzSubwoofer: OFFDolby Digital and DTS:Left, Center, Right, Small speakers: 80Hz-20,000HzSurround Small speakers: 80Hz-20,000HzSubwoofer: 20Hz-80HzLeft, Center, Right Large speakers: 20Hz-20,000HzSurround Large speakers: 20Hz-20,000HzSubwoofer: 20Hz-80HzExternal InputLeft, Center, Right, Left Surro

9、und, Right Surround:20Hz-20,000HzSubwoofer: 20Hz-20kHz (no LP filtering)Rated OutputAll Modes: 2.0Vrms for full bit digital inputInput ImpedanceHigh Level: 22k ohmsPhono: 47k ohms, 65pf2RadioFans.CN 收音机爱 好者资料库MX1193Output Impedance100 ohms unbalanced200 ohms balancedMaximum Output Voltage9.5 VrmsTot

10、al Harmonic Distortion0.005% at all outputsSensitivityAnalog Input: 400mV for 2.0V outputSignal To Noise Ratio All Outputs0.005% maximum from 20Hz to 20,000 Hz at rated output.Maximum Input SignalAnalog Input: 6VrmsVoltage GainAnalog Input to Output: 14dbFrequency Response+0, -0.5dB from 20Hz to 20,

11、000HzTone Controls+12dB, -12dB from flat settingGeneral SpecificationsPower Requirements100 Volts, 50/60Hz at 65 watts110 Volts, 50/60Hz at 65 watts120 Volts, 50/60Hz at 65 watts220 Volts, 50/60Hz at 65 watts230 Volts, 50/60Hz at 65 watts240 Volts, 50/60Hz at 65 wattsNOTE: Refer to the rear panel of

12、 the MX119 for the correctvoltage.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 Front Paneland KnobsWeight27 pounds (12.25kg) net, 46 pounds (20.87kg) shippingweightPERFORMANCE SPECIFICATIONS cont1. The

13、 heavy lines on the schematic denote the primarysignal path.2. Unless otherwise noted, all voltages indicated on theschematics 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

14、 be used.4.On PC board drawings, Square pad indicates:a. Polarized Capacitors - Positiveb. Diodes - Cathodec. Others - Pin 15.WARNINGParts marked with the symbol have criticalcharacteristics. Use only replacement parts recom-mended by the manufacturer.NOTES4SECTION LOCATIONREAR PANELMX11956BLOCK DIA

15、GRAM78BLOCK DIAGRAM contMX119INTERCONNECT9101DISPLAY 050167 SH 1 OF 22ABC1112MX1191314DISPLAY 050167 SH 2 0F 22ABC15162ADISPLAY 050167CONTROL SECTIONMX119DISPLAY KEYBOARD SECTION 0500532CDISPLAY LED SECTION 0501692B17181920SURROUND 050168 SH 1 OF 63MX1192122SURROUND 050168 SH 2 OF 6323243SURROUND 05

16、0168 SH 3 OF 6MX1192526SURROUND 050168 SECTION 4 OF 632728SURROUND 050168 SH 5 OF 63MX119SURROUND 050168 SH 6 OF 632930SURROUND 05016833132MX1193334DATA 050164 SH 1 OF 243536DATA 050164 SH 2 OF 24MX1193738S-VIDEO 050166 SH 1 OF 2539405S-VIDEO 050166 SH 2 OF 2MX1194142VIDEO 05016564344VIDEO 0501656MX

17、1194546INPUT 050163 SH 1 OF 274748INPUT 050163 SH 2 OF 27MX1194950INPUT 0501637COMPONENT VIDEO 05018085152MX1195354COMPONENT VIDEO 0501808TUNER 04908495556NOTE: SEE PAGE 57-58 FOR TUNER ALIGNMENT PROCEDURE.MX1195758AM ALIGNMENT PROCEDURE1.Connect an AM Signal Generator to the RAA1 ”EXT ANT”pin of th

18、e 5 pin connector. (Refer to Page 66.) Connect aDistortion Analyzer to the MX119 rear panel TUNER IN/OUT RCA jacks.2.Tune to bottom of band, and adjust T11 (AM OSC Coil)for 3.0VDC at R46.3.Tune to top of band and adjust C64 (AM OSC TrimmerCapacitor) for 26.0VDC at Connector R46.4.Repeat steps 4 and

19、5 as necessary for a Tuning VoltageRange of 3.0 to 26.0VDC.5.Tune the Generator and Tuner to 600kHz, then adjustCoils: T101 (AM ANT) and T12 (AM RF) for best sensitiv-ity. Note: Coil T101 (AM ANT) is located on the RAA1.It is labeled “L1”.6.Tune the Generator and Tuner to 1400kHz, then adjustTrimmer

20、 Capacitors: C106 (AM ANT) and C61 (AM RF)for best sensitivity. Note: Trimmer Capacitor C106 (AMAMT) is located on the RAA1. It is labeled “C1”.7.Repeat 8 and 9 until no improvement in sensitivity isnoted.Figure 1Note: Refer to Figure 1 while reading the below procedure.FM ALIGNMENT PROCEDURE1.Conne

21、ct an FM Signal Generator to Antenna Input.2.Connect Distortion Analyzer to the TUNER IN/OUT RCAjacks.3.Remove Top Cover and AM/FM TUNER Cover. Turn Onthe AC rocker switch. Press the red Standby button toturn the unit On.4.Select Tuner with the Zone A selector knob. Put Tunerinto FM mode and tune to

22、 87.5MHz.5.Adjust L5 (FM OSC Coil) for 3.5VDC at R46.6.Tune to 108.5MHz and adjust C59 (FM OSC TrimmerCapacitor) for 24.5VDC at R46.7.Repeat steps 4, 5 and 6 as necessary for a tuning rangeof 3.5VDC to 24.5VDC at R46.8.Tune the Generator and Tuner to 90MHz and adjustCoils: L2 (FM MIX), L3 (FM RF) an

23、d L4 (FM ANT) forbest sensitivity.9.Tune the Generator and Tuner to 104MHz and adjustTrimmer Capacitors: C60 (FM MIX), C62 (FM RF) andC63 (FM ANT) for best sensitivity.10. Repeat 8 and 9 until no improvement in sensitivity isnoted.11. Tune Tuner to 90MHz with no RF Input and adjust T9(FM DETector Pr

24、imary) for zero volts between TP1 andTP2 relative (connector J6).12. Tune the Generator to 90MHz and adjust the RF Outputto 1000uV and 100% MONO modulation at 1000Hz.Then adjust T8 (FM DETector SECondary) for lowestdistortion.13. Reduce the Generator Output to minimum and detunethe Generator so the

25、Receiver picks up only noise, thenrecheck the voltage between TP1 and TP2 (connectorJ6). Adjust T8 and C65 if needed. If it is not 0+/-0.2VDC, repeat steps 11 and 12.If there is interferencefrom a station on this frequency, tune the Tuner to anearby frequency free from interference for this measure-

26、ment.14. Tune the Generator to 90MHz with a 1000uV output.Then switch the Generator to stereo (left only) and adjustT10 (FM IF Transformer) for the lowest distortion at theTUNER IN/OUT RCA jacks.15. Switch the Analyzer to the right channel TUNER IN/OUTjack and adjust R71 (MPX SEParation Pot) for bes

27、tseparation (minimum output).16. Switch the Generator to the Right Channel and theAnalyzer to the Left Channel. Adjust R71 (MPXSEParation Pot) and check for best separation (mini-mum output).17. Disconnect voltmeter from TP1 and TP2 (J6). Reduce thegenerator output to 5uV and adjust R73 (STEREOSWITC

28、H Pot) so the MPX light (Dot next to SignalStrength number) just comes on.8.Note the initial position of R70, and then adjust R70 fullycounter clockwise. Tune the Generator and Tuner to1400kHz (20uV, 30% modulation), then Adjust T7 (AMIF) for maximum signal.9.Tune the Generator and Tuner to 1400kHz

29、(100mV, 30%modulation). Slowly adjust R70 clockwise until theMX119 front panel signal strength display reads “9”.10. Check both channels for signal to noise performance,and re-adjust R70 and as needed.5960RAA1 SECTION10MX119PARTS LISTINTERCONNECTRef. No.DescriptionPart No.F1FUSE, 800MA SLO-BLO 5 X 2

30、0089117TB1AC TERMINAL BLOCK074091T1POWER TRANSFORMER159302DISPLAY PCB 050167C1CAP MONO .01UF 50V 20% X7R061304C2CAP ELECT 1UF 50V066510C14CAP MONO 33PF 200V 5%061307C15CAP MONO 33PF 200V 5%061307C25CAP MONO .1UF 50V 20% Z5U061305C26CAP MONO .1UF 50V 20% Z5U061305C27CAP MONO .1UF 50V 20% Z5U061305C29

31、CAP MONO .1UF 50V 20% Z5U061305C31CAP MONO .1UF 50V 20% Z5U061305C32CAP MONO .1UF 50V 20% Z5U061305C33CAP ELECT 10UF 16V066382C50CAP ELECT 10UF 16V066382C51CAP MONO .1UF 50V 20% Z5U061305C57CAP MONO .1UF 50V 20% Z5U061305C58CAP MONO .1UF 50V 20% Z5U061305C100CAP MONO .1UF 50V 20% Z5U061305C170CAP MO

32、NO 100PF 100V 10% NPO061300C200CAP MONO .01UF 50V 20% X7R061304C201CAP MONO .01UF 50V 20% X7R061304C204CAP MONO .01UF 50V 20% X7R061304C205CAP MONO .01UF 50V 20% X7R061304C206CAP MONO .01UF 50V 20% X7R061304C207CAP MONO .01UF 50V 20% X7R061304C210CAP MONO .01UF 50V 20% X7R061304C211CAP MONO .01UF 50

33、V 20% X7R061304DS5LED GRN 5MM HI-INTENSITY058165(DS5)SPACER LED112108DS6LED GRN 5MM HI-INTENSITY058165(DS6)SPACER LED112108DS7LED GRN 5MM HI-INTENSITY058165(DS7)SPACER LED112108DS8LED GRN 5MM HI-INTENSITY058165(DS8)SPACER LED112108DS9LED GRN 5MM HI-INTENSITY058165(DS9)SPACER LED112108DS10LED GRN 5MM

34、 HI-INTENSITY058165(DS10)SPACER LED112108DS11LED GRN 5MM HI-INTENSITY058165(DS11)SPACER LED112108D300DIODE SILICON070047D301DIODE SILICON070047D302DIODE SILICON070047IC4IC OCTAL D-TYPE FLIP-FLOP133348(IC4)SOCKET 20-PIN IC178124IC5IC QUAD ANALOG SWITCH HI SPEED 133342IC6IC OCTAL BUFFER 3-STATE133349(

35、IC6)SOCKET 20-PIN IC178124IC7IC OCTAL BUFFER 3-STATE133349(IC7)SOCKET 20-PIN IC178124IC10IC QUAD ANALOG SWITCH HI SPEED 133342IC11IC SRAM133227(IC11)SOCKET IC 28 PIN178126IC13IC OCT 3-STT NONINVERTING133222(IC13)SOCKET 20-PIN IC178124IC14IC PROG 133350 MX119133543(IC14)SOCKET IC 32 PIN178165IC15IC M

36、ICRO ROMLESS133386(IC15)SOCKET IC 40-PIN178133IC17IC QUAD ANALOG SWITCH HI SPEED 133342IC20IC: PROG CONTROL CPLD 133406133548(IC20)SOCKET IC PLCC 84 PIN178174IC31IC NAND SCHMIT 2-IN X 4133192IC32IC NAND SCHMIT 2-IN X 4133192IC50IC 8 BIT A/D SERIAL OUTPUT133366IC75IC CPU SUPERVISOR133424J1CONN MALE 1

37、0 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 SQ117644(J9)CONN MALE 5 PIN 0.1 POST ASSY117216J10CONN MALE 10 POS117219J11CONN FFC 18PIN117765J12SOCKET STRIP 14

38、 PIN .025 SQ117644J19CONN MALE 10 POS117219J25CONN MALE 7 PIN117217J26CONN 4 PIN117215PCB1PC BD DISPLAY129569Q1TRANSISTOR NPN SILICON132171Q50TRANSISTOR NPN 2K/REEL132223R5RES NETWORK 8X330 ISO144263R9RES NET 2 X 22K ISOLATED144366R18RES MF 100 OHM 1% 1/4W144196R19RES MF 47.5 OHM 1% 1/4W144442R20RES

39、 MF 100 OHM 1% 1/4W144196R21RES MF 182 OHM 1/4W 1%144273R22RES MF 182 OHM 1/4W 1%144273R23RES MF 47.5 OHM 1% 1/4W144442R26RES NET 2 X 22K ISOLATED144366R27RES NET 2 X 22K ISOLATED144366R29RES NET 2 X 22K ISOLATED144366R30RES MF 10 OHM 1% 1/4W144157R31RES MF 4.99K 1% 1/4W144098R32RES MF 100 OHM 1% 1/

40、4W144196R45RES NET 2 X 22K ISOLATED144366R50RES NETWORK 9X1K ISO144280R51RES NETWORK 9X1K ISO144280R52RES NETWORK 9X1K ISO144280R83RES FP 10 OHM 5% 1/4W137025R100RES MF 10K 1% 1/4W144053R101RES MF 10K 1% 1/4W144053R102RES NETWORK 4 X 22K BUS144234R105RES MF 10K 1% 1/4W144053R131RES NET 10K X8 RES BU

41、SSED144253R150RES NETWORK 4X1K ISO144276R151RES NETWORK 4X1K ISO144276R170RES MF 4.99K 1% 1/4W144098R171RES MF 4.99K 1% 1/4W144098R200RES NET 2 X 22K ISOLATED144366R201RES MF 47.5K 1% 1/4W144108R203RES NET 2 X 22K ISOLATED144366R204RES NET 2 X 22K ISOLATED144366R206RES NET 2 X 22K ISOLATED14436612AR

42、ef. No.DescriptionPart No.6162R300RES MF 47.5K 1% 1/4W144108U3IC:PROGRAMMED133336, IR MICRO133545(U3)SOCKET 20-PIN IC178124Y1CRYSTAL 11.0592MHZ180051DISPLAY PCB 050167 (Contd.)Ref. No.DescriptionPart No.C4CAP MONO .1UF 50V 20% Z5U061305C5CAP MONO .1UF 50V 20% Z5U061305C6CAP MONO .1UF 50V 20% Z5U0613

43、05C10CAP ELECT 47UF 35V066446C11CAP MONO 1000PF 50V 10% NPO061303C12CAP MONO .1UF 50V 20% Z5U061305C16CAP MONO .1UF 50V 20% Z5U061305C17CAP MONO 1000PF 50V 10% NPO061303C19CAP ELECT 47UF 35V066446C20CAP ELECT 47UF 35V066446C21CAP ELECT 10UF 50V066445DS1DISPLAY VFD 12 CHARACTER058182DS2LED SQUARE RED

44、058109DS3LED SQUARE RED058109DS4LED SQUARE RED058109DS5LED SQUARE RED058109DS6LED SQUARE RED058109DS7LED SQUARE RED058109DS8LED SQUARE RED058109DS9LED SQUARE RED058109DS10LED SQUARE RED058109DS11LED SQUARE RED058109DS12LED SQUARE RED058109DS13LED SQUARE RED058109DS14LED SQUARE RED058109DS15LED SQUAR

45、E RED058109DS16LED SQUARE RED058109DS17LED SQUARE RED058109DS34LED ARRAY(5) YELLOW RECTANGLE058127(DS34)CONN 10 PIN117876DS38LED ARRAY(5) YELLOW RECTANGLE058127(DS38)CONN 10 PIN117876DS41LED ARRAY(5) YELLOW RECTANGLE058127(DS41)CONN 10 PIN117876DS42LED ARRAY(5) YELLOW RECTANGLE058127(DS42)CONN 10 PI

46、N117876DS43LED ARRAY(5) YELLOW RECTANGLE058127(DS43)CONN 10 PIN117876DS44LED ARRAY(5) YELLOW RECTANGLE058127(DS44)CONN 10 PIN117876DS45LED ARRAY(5) YELLOW RECTANGLE058127(DS45)CONN 10 PIN117876DS46LED ARRAY(5) YELLOW RECTANGLE058127(DS46)CONN 10 PIN117876IC2IC VFD DRIVER133549(IC2)SOCKET IC 40-PIN17

47、8133IC3IC DISPLAY DRIVER 4 DIGIT LED133268(IC3)SOCKET IC 40-PIN178133IC12IC DISPLAY DRIVER 4 DIGIT LED133268(IC12)SOCKET IC 40-PIN178133J2TERMINAL STRIP 14 PIN .025 SQ117647J7TERMINAL STRIP 14 PIN .025 SQ117647LED PCB 0501692BJ9TERMINAL STRIP 14 PIN .025 SQ117647J12TERMINAL STRIP 14 PIN .025 SQ11764

48、7MOLD1MOLD FUNCTION LED017865MOLD3MOLD LED INDICATOR017866MOLD4MOLD FUNCTION LED017865MOLD5MOLD FUNCTION LED017865MOLD6MOLD FUNCTION LED017865MOLD7MOLD FUNCTION LED017865MOLD8MOLD FUNCTION LED017865MOLD9MOLD FUNCTION LED017865MOLD10MOLD FUNCTION LED017865MOLD11MOLD LED INDICATOR017866MOLD12MOLD LED

49、INDICATOR017866MOLD13MOLD LED INDICATOR017866Q2TRANSISTOR PNP132224R1RES MF 47.5K 1% 1/4W144108R6RES MF 3.3K 1% 1/4W144095R8RES MF 10 OHM 1% 1/4W144157R10RES NETWORK 5X47K BUSSED144254R12RES NETWORK 9 X 47K BUS144250R13RES NETWORK 9 X 47K BUS144250R14RES NETWORK 9 X 47K BUS144250R15RES MF 4.99K 1% 1

50、/4W144098R18RES MF 4.99K 1% 1/4W144098R25RES FP 47 OHM 5% 1/4W137042S21SWITCH ROT ENCODER 24 DETENT146255S22SWITCH ROT ENCODER 24 DETENT146255S24SWITCH ROT ENCODER 24 DETENT146255S25SWITCH ROT ENCODER NO DETENT146256Ref. No.DescriptionPart No.KEYBOARD PCB 0500532CC13CAP MONO .1UF 50V 20% Z5U061305C2