McIntosh-MX135-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 - 11Display Schematic and PCB . 12 - 19Surround Schematic and PCB . 19 - 34Data Schematic and PCB. 37 - 41S-Video Schematic and PCB. 42 - 47Video Schematic and

2、PCB. 48 - 50Input Schematic and PCB . 51 - 56Component Video Schematic and PCB . 57 - 60Tuner AM/FM Alignment Procedure. 61 - 62Tuner/RAA1 Schematic and PCB . 63 - 66Balanced Schematic and PCB . 67 - 70Parts List . 71 - 90Exploded Views and Parts Lists . 91 - 94Repacking Instruction . 95CONTENTSA/V

3、CONTROL CENTERSerial Number VJ1001 And AboveSERIAL NO. VJ1001 And AboveRadioFans.CN 收音机爱 好者资料库PERFORMANCE SPECIFICATIONSAudioFrequency ResponseStereo: Left and Right Small speakers: 80Hz-20,000HzSubwoofer: 20Hz-80HzLeft and Right Large speakers: 20Hz-20,000HzSubwoofer: OFFPro-Logic IIx: (Movie Proce

4、ssing Mode)Left, Center, Right, Small speakers: 80Hz-20,000HzSurround Small speakers: 80Hz-20kHzSubwoofer: 20Hz-80Hz(Music Processing Mode)Left, Center, Right, Large speakers: 20Hz-20,000HzSurround Large speakers: 20Hz-20,000HzSubwoofer: OFFDolby Digital and DTS:Left, Center, Right, Small speakers:

5、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 Surround, Right Surround:20Hz-20,000HzSubwoofer: 20Hz-20kHz (no LP filtering)Rated

6、 OutputAll Modes: 2.0Vrms for full bit digital inputInput Impedance22k ohmsOutput Impedance47 ohms at all outputsMaximum Output Voltage9.5 VrmsTotal Harmonic Distortion0.005% at all outputsSensitivityAnalog Input: 400mV for 2.0V outputSignal To Noise Ratio All OutputsGreater than 90dB un-weighted. G

7、reater than 100dB Aweighted. Greater than 98dB CCIR.Maximum Input SignalAnalog Input: 6VrmsVoltage GainAnalog Input to Output: 14dBFrequency Response+0, -0.5dB from 20Hz to 20,000HzTone Controls+12dB, -12dB from flat settingFM Tuner (TM1 option)Useable Sensitivity14dBF which is 1.4uV across 75 ohms5

8、0dB Quieting SensitivityMono: 19dBF which is 2.4uV across 75 ohmsStereo: 35dBF which is 15uV across 75 ohmsSignal To Noise RatioMono: 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%

9、at 10,000HzStereo: 0.45% at 100Hz, 0.45% at 1,000Hz, 0.65% at 10,000HzIntermodulaton DistortionMono: 0.25%Stereo: 0.45%Capture Ratio1.2dBAlternate Channel Selectivity75dBSpurious Response100dBImage Response75dBRF Intermodulation65dBStereo Separation45dB at 100Hz, 45dB at 1,000Hz, 35dB at 10,000HzSCA

10、 Rejection65dB2RadioFans.CN 收音机爱 好者资料库General 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 the MX135

11、 for the correctvoltage.Overall DimensionsFront Panel: 17-1/2 inches (44.5cm) wide, 9-7/16 inches(23.97cm) high. Depth behind front mounting panel is 19inches (48.26cm) including clearance for connectors. Panelclearance required in front of mounting panel is 1-1/8 inches(2.9cm).Weight31.5 pounds (14

12、.3kg) net, 55 pounds (25kg) shipping weightPERFORMANCE SPECIFICATIONS contMX135AM Tuner (TM1 option)Sensitivity20uV external antenna inputSignal To Noise Ratio48dB at 30% modulation58dB at 100% modulationHarmonic Distortion0.5% maximum at 50% modulationFrequency Response50Hz to 6kHz NRSCAdjacent Cha

13、nnel Selectivity45dB minimum IHFImage Rejection65dB minimum from 540 to 1600kHzIF Rejection80dB minimum1. The 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 v

14、olts, 50/60Hz.b. All voltages are +/-10% with respect to ground. A high impedance (10 megaohm) voltmeter must be used.3. On PC board drawings, Square pad indicates:a. Polarized Capacitors - Positiveb. Diodes - Cathodec. Others - Pin 14. WARNINGParts marked with the symbol have criticalcharacteristic

15、s. Use only replacement parts recom-mended by the manufacturer.NOTESREAR PANEL34SECTION LOCATIONSBOTTOM VIEW WITH COVER REMOVEDTOP VIEW WITH COVER REMOVED56MX135BLOCK DIAGRAM78BLOCK DIAGRAM cont91110INTERCONNECTMX1351121413DISPLAY 050036 SH 1 OF 22ABC151716DISPLAY 050036 SH 2 0F 2MX1352ABC1820192ASU

16、RROUND 050037 SH 1 OF 63KEYBOARD SECTION 0500532CLED SECTION 0500542BDISPLAY CONTROL SECTION 050036SURROUND 050037 SH 2 OF 63212322MX1352426253SURROUND 050037 SH 3 OF 62728SURROUND 050037 SECTION 4 OF 63MX1352930SURROUND 050037 SH 5 OF 63SURROUND 050037 SH 6 OF 633132MX135SURROUND 05003733334NOTES35

17、36MX135DATA 050033 SH 1 OF 243738394140DATA 050033 SH 2 OF 24MX135S-VIDEO 050035 SH 1 OF 25424443454746S-VIDEO 050035 SH 2 OF 25MX135485049VIDEO 0500346515352INPUT 050032 SH 1 OF 27MX135545655INPUT 050032 SH 2 OF 27INPUT 0501637COMPONENT VIDEO 0500398MX135575958TUNER ALIGNMENT PROCEDUREAM ALIGNMENT

18、PROCEDURE1.Connect an AM Signal Generator to the RAA1 ”EXTANT” pin of the 5 pin connector. (Refer to Page 66.)Connect a Distortion Analyzer to the MX135 rear panelTUNER 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 O

19、SC TrimmerCapacitor) for 26.0VDC at Connector R46.4.Repeat steps 4 and 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 lab

20、eled “L1”.6.Tune the Generator and Tuner to 1400kHz, then adjustTrimmer 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 F

21、igure 1 while reading the below procedure.FM ALIGNMENT PROCEDURE1.Connect 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

22、 Tuner with the Zone A selector knob. Put Tunerinto FM mode and tune to 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 G

23、enerator and Tuner to 90MHz and adjustCoils: L2 (FM MIX), L3 (FM RF) and 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 isnote

24、d.11. Tune Tuner to 90MHz with no RF Input and adjust T9(FM DETector Primary) 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.

25、 Reduce the Generator Output to minimum and detunethe Generator so the 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

26、the Tuner to anearby frequency free from interference for this measure-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 rig

27、ht channel TUNER IN/OUTjack and adjust R71 (MPX SEParation Pot) for bestseparation (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

28、TP2 (J6). Reduce thegenerator output to 5uV and adjust R73 (STEREOSWITCH Pot) so the MPX light (Dot next to SignalStrength number) just comes on.62618.Note the initial position of R70, and then adjust R70 fullycounter clockwise. Tune the Generator and Tuner to1400kHz (20uV, 30% modulation), then Adj

29、ust T7 (AMIF) for maximum signal.9.Tune the Generator and Tuner to 1400kHz (100mV, 30%modulation). Slowly adjust R70 clockwise until theMX135 front panel signal strength display reads “9”.10. Check both channels for signal to noise performance,and re-adjust R70 and as needed.TUNER 04908496364MX135TU

30、NER 04908496566RAA1 SECTION10BALANCED 050040676810MX135BALANCED 0500401069707172PARTS LISTRef No.DescriptionPart No.2B2AMX135INTERCONNECTF1FUSE, 1A SLO-BLO 5 X 20089107TB1AC TERMINAL BLOCK074091T1POWER TRANSFORMER159302DISPLAY PCB 050036C1CAP MONO .01UF 50V 20% X7R061304C4CAP MONO .1uF 50V 20% Z5U06

31、1305C5CAP MONO .1uF 50V 20% Z5U061305C6CAP MONO .1uF 50V 20% Z5U061305C9CAP ELECT 47UF 35V066446C10CAP ELECT 47UF 35V066446C14CAP MONO 33PF 200V 5%NPO T&R061307C15CAP MONO 33PF 200V 5%NPO T&R061307C21CAP ELECT 10UF 16V 4X5 CASE066382C25CAP MONO .1uF 50V 20% Z5U061305C26CAP MONO .1uF 50V 20% Z5U06130

32、5C27CAP MONO .1uF 50V 20% Z5U061305C29CAP MONO .1uF 50V 20% Z5U061305C31CAP MONO .1uF 50V 20% Z5U061305C32CAP MONO .1uF 50V 20% Z5U061305C33CAP ELECT 10UF 16V 4X5 CASE066382C50CAP ELECT 10UF 16V 4X5 CASE066382C51CAP MONO .1uF 50V 20% Z5U061305C56CAP MONO .1uF 50V 20% Z5U061305C57CAP MONO .1uF 50V 20

33、% Z5U061305C58CAP MONO .1uF 50V 20% Z5U061305C100CAP MONO .1uF 50V 20% Z5U061305C170CAP MONO 100PF 100V 10% NPO061300C200CAP MONO .01UF 50V 20% X7R061304C201CAP MONO .01UF 50V 20% X7R061304C202CAP MONO .01UF 50V 20% X7R061304C203CAP MONO .01UF 50V 20% X7R061304C204CAP MONO .01UF 50V 20% X7R061304C20

34、5CAP MONO .01UF 50V 20% X7R061304C206CAP MONO .01UF 50V 20% X7R061304C207CAP MONO .01UF 50V 20% X7R061304C208CAP MONO .01UF 50V 20% X7R061304C209CAP MONO .01UF 50V 20% X7R061304C210CAP MONO .01UF 50V 20% X7R061304C211CAP MONO .01UF 50V 20% X7R061304D2DIODE ZENER 15V 1W070061D300DIODE SILICON070047D3

35、01DIODE SILICON070047D302DIODE SILICON070047DS1DISPLAY 12 CHARACTER058168DS5LED GREEN 5MM HI-INTENSITY058165DS6LED GREEN 5MM HI-INTENSITY058165DS7LED GREEN 5MM HI-INTENSITY058165DS8LED GREEN 5MM HI-INTENSITY058165DS10LED GREEN 5MM HI-INTENSITY058165DS11LED GREEN 5MM HI-INTENSITY058165IC2IC VF ALPHAN

36、UMERIC CONTROLLER133347IC4IC PAGE MODE EEPROM133348IC5IC PROGRAMMED VRSION OF 133343133342IC6IC PROGRAMMED VRSION OF 133351133349IC7IC PROGRAMMED VRSION OF 133351133349IC10IC PROGRAMMED VRSION OF 133343133342IC11SRAM133227IC13IC OCT 3-STT NONINVERTING133222IC14133350 BCMS 133517 AFTER PRGRMMNG133350

37、IC15IC MICRO ROMLESS133386IC16IC PROGRAMMED VRSION OF 133266133379IC17IC PROGRAMMED VRSION OF 133343133342IC20133406 BCMS 133518 AFTER PRGRMMNG133406IC30IC NAND SCHMIT 2-IN X 4133192IC31IC NAND SCHMIT 2-IN X 4133192IC32IC NAND SCHMIT 2-IN X 4133192IC50IC 8 BIT A/D SERIAL OUTPUT133366IC75IC CPU SUPER

38、VISOR133424J1CONN MALE 10 POS117219J3CONN MALE 7 PIN117217J5SOCKET STRIP .025 SQ 20 PIN117642J8CONN MALE 10 POS117219J9_CONN MALE 5 PIN 0.1 POST ASSY117216J10CONN MALE 10 POS117219J11CONN FFC 18PIN117765J19CONN MALE 10 POS117219J21_CONN 9 PIN FEMALE117694J25_CONN MALE 7 PIN117217J26_CONN 4 PIN117215

39、Q1TRANSISTOR NPN SILICON132171Q2TRANSISTOR PNP132224Q50TRANSISTOR NPN132223R1RES MF 47.5K 1% 1/4W144108R5RES NETWORK 8X330 ISO144263R6RES MF 47.5K 1% 1/4W144108R7RES MF 1.74K 1% 1/4W144351R8RES MF 10 OHM 1% 1/4W144157R9RES NET 2 X 22K ISOLATED144366R10RES NETWORK 5X47K BUSSED144254R12RES NETWORK 9 X

40、 47K BUS144250R13RES NETWORK 9 X 47K BUS144250R14RES NETWORK 9 X 47K BUS144250R18RES MF 100 OHM 1/4W144196R19RES MF 100 OHM 1/4W144196R20RES MF 100 OHM 1/4W144196R21RES MF 100 OHM 1/4W144196R22RES MF 100 OHM 1/4W144196R23RES MF 100 OHM 1/4W144196R24RES NET 2 X 22K ISOLATED144366R25RES FP 47 OHM 5% 1

41、/4W137042R26RES NET 2 X 22K ISOLATED144366R27RES NET 2 X 22K ISOLATED144366R28RES NET 2 X 22K ISOLATED144366R29RES NET 2 X 22K ISOLATED144366R30RES MF 10 OHM 1% 1/4W144157R31RES MF 4.99K 1/4W144098R32RES MF 100 OHM 1/4W144196R45RES NET 2 X 22K ISOLATED144366R50RES NETWORK 9X1K ISO144280R51RES NETWOR

42、K 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 B144253R150RES NETWORK 4X1K ISO144276R151RES NETWORK 4X1K ISO144276R170RES MF 4.99K 1

43、% 1/4W144098R171RES MF 4.99K 1% 1/4W144098R200RES NET 2 X 22K ISOLATED144366R201RES MF 47.5K 1% 1/4W144108R202RES NET 2 X 22K ISOLATED144366R203RES NET 2 X 22K ISOLATED144366R204RES NET 2 X 22K ISOLATED144366R205RES NET 2 X 22K ISOLATED144366R206RES NET 2 X 22K ISOLATED144366R300RES MF 47.5K 1% 1/4W

44、144108S3ENCODER OPTICAL ROTARY146246S20POT ROTARY SWITCH QUADRATURE146255S21POT ROTARY SWITCH QUADRATURE146255S22POT ROTARY SWITCH QUADRATURE146255S23POT ROTARY SWITCH QUADRATURE146255S24POT ROTARY SWITCH QUADRATURE146255S25POT ROTARY SWITCH QUADRATURE146256TEST1CONN 4 PIN117215U3PROGRAMMED 133336 (

45、OPTION)133469Y1Crystal 11.0592MHz180051LED PCB 050054C11CAP 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 35V066446DS2LED SQUARE RED058109DS3LED SQUARE RED058109DS4LED

46、SQUARE RED058109DS5LED SQUARE RED058109DS6LED SQUARE RED058109DS7LED SQUARE RED058109DS8LED SQUARE RED058109DS9LED SQUARE RED058109DS10LED SQUARE RED058109DS11LED SQUARE RED058109DS12LED SQUARE RED058109DS13LED SQUARE RED058109DS14LED SQUARE RED058109DS15LED SQUARE RED058109DS16LED SQUARE RED058109D

47、S17LED SQUARE RED058109DS18LED 2 SEGMENT YELLOW BAR058146DS19LED 2 SEGMENT YELLOW BAR058146DS20LED 2 SEGMENT YELLOW BAR058146DS21LED 2 SEGMENT YELLOW BAR058146DS22LED 2 SEGMENT YELLOW BAR058146DS23LED 2 SEGMENT YELLOW BAR058146DS24LED 2 SEGMENT YELLOW BAR058146DS25LED 2 SEGMENT YELLOW BAR058146DS26L

48、ED 2 SEGMENT YELLOW BAR058146DS27LED 2 SEGMENT YELLOW BAR058146DS29LED 2 SEGMENT YELLOW BAR058146DS30LED 2 SEGMENT YELLOW BAR058146DS34LED ARRAY(5) YELLOW RECTANGLE058127DS37LED 2 SEGMENT YELLOW BAR058146DS38LED ARRAY(5) YELLOW RECTANGLE058127DS40LED 2 SEGMENT YELLOW BAR058146DS41LED ARRAY(5) YELLOW

49、 RECTANGLE058127DS42LED ARRAY(5) YELLOW RECTANGLE058127DS43LED ARRAY(5) YELLOW RECTANGLE058127DS44LED ARRAY(5) YELLOW RECTANGLE058127DS45LED ARRAY(5) YELLOW RECTANGLE058127DS46LED ARRAY(5) YELLOW RECTANGLE058127DS47LED 2 SEGMENT YELLOW BAR058146DS48LED 2 SEGMENT YELLOW BAR058146IC3IC DISPLAY DRIVER

50、4 DIGIT LED133268IC12IC DISPLAY DRIVER 4 DIGIT LED133268J20_CONN 9 PIN MALE117695MOLD1FUNCTION LED MOLD017948MOLD2FUNCTION LED MOLD017714MOLD3INDICATOR LED MOLD017715MOLD4FUNCTION LED MOLD017948MOLD5FUNCTION LED MOLD017948MOLD6FUNCTION LED MOLD017948MOLD7FUNCTION LED MOLD017948MOLD8FUNCTION LED MOLD