McIntosh-MX136-av-sm 维修电路原理图.pdf

Performance 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 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 - 70HDMI Module . 71HDMI Power Supply . 72Parts List . 73 - 90Exploded Views and Parts Lists . 91 - 94CONTENTSSERVICE MANUALSerial Number XM1001 And AboveSERIAL NO. XM1001 And AboveMX136A/V CONTROL CENTERRadioFans.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 Distortion0.005% 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 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 Tape/VCR Out:40dBPhono to Output (Main):54dBHigh Level to Tape/VCR 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, 50/60Hz at 65 watts230 Volts, 50/60Hz at 65 watts240 Volts, 50/60Hz at 65 wattsNote: Refer to the rear panel of the MX136 for the correctvoltage.Overall DimensionsWidth is 17-3/4 inches (45.09cm)Height is 9-7/16 inches (23.97cm) including feetDepth is 18-3/4 inches (47.63cm) including the Front Paneland KnobsWeight31 pounds (14.06Kg) net, 55 pounds (24.95Kg) shippingShipping Carton DimensionsWidth is 25 inches (63.5cm)Depth is 28 inches (71.12cm)Height is 18-3/8 inches (46.67cm)FM Tuner SpecificationsUseable 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 RatioMono:75dBStereo:70dBFrequency ResponseMono:+ 0, - 1dB from 20 to 15,000HzStereo:+ 0, - 1dB from 20 to 15,000HzHarmonic DistortionMono:0.3% at 100Hz0.3% at 1,000Hz0.3% at 10,000HzStereo:0.45% at 100Hz0.45% at 1,000Hz0.65% at 10,000HzIntermodulation DistortionMono0.25%Stereo0.45%RadioFans.CN 收音机爱 好者资料库PERFORMANCE SPECIFICATIONS contMX1361. 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 volts, 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 criticalcharacteristics. Use only replacement parts recom-mended by the manufacturer.NOTESREAR PANEL3Capture Ratio1.2dBAlternate Channel Selectivity75dBSpurious Response100dBImage Response75dBRF Intermodulation65dBStereo Separation45dB at 100Hz45dB at 1,000Hz35dB at 10,000HzSCA Rejection65dBAM Tuner SpecificationsSensitivity20uV External Antenna InputSignal To Noise Ratio48dB at 30% modulation58dB at 100% modulationHarmonic Distortion0.5% maximum at 50% modulationFrequency Response50Hz to 6kHz NRSCAdjacent Channel Selectivity45dB minimum IHFImage Rejection65dB minimum from 540 to 1600kHzIF Rejection80dB minimum4SECTION LOCATIONSBOTTOM VIEW WITH COVER REMOVEDTOP VIEW WITH COVER REMOVEDMX13656BLOCK DIAGRAM78BLOCK DIAGRAM cont91110INTERCONNECTMX1361121413DISPLAY 750565 SH 1 OF 22ABC151716DISPLAY 750565 SH 2 0F 2MX1362ABC1820192ASURROUND 750570 SH 1 OF 63KEYBOARD SECTION 7505682CLED SECTION 7505692BDISPLAY CONTROL SECTION 750565SURROUND 750570 SH 2 OF 63212322MX1362426253SURROUND 750570 SH 3 OF 6MX1362728SURROUND 750570 SCH 4 OF 632930SURROUND 750570 SCH 5 OF 63MX136SURROUND 750570 SCH 6 OF 633132SURROUND 750570 PCB33334SURROUND 750570 PCB33334MX1363536NOTES3738DATA 750562 SCH 1 OF 24394140DATA 750562 SH 2 OF 24MX136S-VIDEO 750564 SH 1 OF 25424443454746S-VIDEO 750564 SH 2 OF 25MX136485049VIDEO 7505636515352INPUT 750561 SH 1 OF 27MX136545655INPUT 750561 SH 2 OF 27INPUT 7505617COMPONENT VIDEO 7505668575958MX136TUNER ALIGNMENT PROCEDUREAM ALIGNMENT 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 OSC 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 labeled “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 Figure 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 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 Generator 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 isnoted.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. 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 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 right 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 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 Adjust 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.COMPONENT VIDEO 750566860MX136TUNER 049084 SCH9A6364TUNER 049084 PCB6566RAA1 SECTION 049084 SCH and PCB9A9BMX136BALANCED 750567 SCH676810BALANCED 750567 PCB106970MX136HDMI MODULE 7506231171HDMI POWER SUPPLY 7505991272INTERCONNECTRef. No. DescriptionPart No.F1FUSE, 5 X 20 .80A IEC SLO-BLO089141TB1AC TERMINAL BLOCK074091T1POWER TRANSFORMER159340MX136PARTS LIST2ADISPLAY PCB 750565Ref. No. DescriptionPart No.C1CAP MONO .01UF 50V 20% X7R061345C4CAP MONO .1UF 50V 20% Z5U061346C5CAP MONO .1UF 50V 20% Z5U061346C6CAP MONO .1UF 50V 20% Z5U061346C14CAP MONO 33PF 200V 5% NPO061347C15CAP MONO 33PF 200V 5% NPO061347C25CAP 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 16V066580C50CAP ELECT 10UF 16V066580C51CAP MONO .1UF 50V 20% Z5U061346C56CAP 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% X7R061345C202CAP MONO .01UF 50V 20% X7R061345C203CAP MONO .01UF 50V 20% X7R061345C204CAP MONO .01UF 50V 20% X7R061345C205CAP MONO .01UF 50V 20% X7R061345C206CAP MONO .01UF 50V 20% X7R061345C207CAP MONO .01UF 50V 20% X7R061345C208CAP MONO .01UF 50V 20% X7R061345C209CAP MONO .01UF 50V 20% X7R061345C210CAP MONO .01UF 50V 20% X7R061345C211CAP MONO .01UF 50V 20% X7R061345C21CAP ELECT 10UF 50V066445C10CAP ELECT 47UF 35V066446C2CAP ELECT 1UF 50V066510D300DIODE SILICON070174D301DIODE SILICON070174D302DIODE SILICON070174DS1DISPLAY VFD 12 CHARACTER058182DS5LED 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 HI-INTENSITY058165(DS10)SPACER LED112108DS11LED GRN 5MM HI-INTENSITY058165(DS11)SPACER LED112108IC2IC VFD DISPLAY DRIVER133549(IC2)SOCKET IC 40-PIN178133IC4IC OCTAL D TYPE FLIP FLOP133603IC5IC QUAD ANALOG SWITCH HI SPEED 133342IC6IC OCTAL BUFFER 3-STATE133349(IC6)SOCKET IC 20 PIN178181IC7IC OCTAL BUFFER 3-STATE133349(IC7)SOCKET IC 20 PIN178181IC10IC QUAD ANALOG SWITCH HI SPEED 133342IC11IC SRAM133659(IC11)SOCKET IC 28 PIN178126IC13IC OCT 3-STT NONINVERTING133654IC14IC PROG MX136 V1.1.10 133665133653(IC14)SOCKET IC 32 PIN178165IC15IC MICRO ROMLESS133386(IC15)SOCKET IC 40-PIN178133IC17IC QUAD ANALOG SWITCH HI SPEED 133342IC20IC PROG DISPLAY CONTROL 133660133662(IC20)IC SOCKET 84 PIN PLCC178185IC30IC NAND SCHMIT 2-IN X 4133595IC31IC NAND SCHMIT 2-IN X 4133595IC32IC NAND SCHMIT 2-IN X 4133595IC50IC 8 BIT A/D SERIAL OUTPUT133366IC75IC CPU SUPERVISOR133639J1CONN MALE 10 POS117219J3CONN MALE 7 PIN117217J5CONN 10 PIN BOXED HEADER117795J8CONN MALE 10 POS117219J10CONN MALE 10 POS117219J11CONN 18 PIN FFC117908J19CONN MALE 10 POS117219J21CONN 9 PIN FEMALE117932J25CONN MALE 7 PIN117217J26CONN 4 PIN117215PCB1PC BD DISPLAY129814Q1TRANSISTOR NPN SILICON132317Q2TRANSISTOR PNP SILICON132304Q50TRANSISTOR NPN SILICON132317R1RES MF 47.5K 1% 1/4W144526R5RES NETWORK 8 X 330 ISO144679R6RES MF 3.32K 1% 1/4W144518R8RES MF 10 OHM 1% 1/4W144553R9RES NETWORK 2 X 22K ISO144689R10RES NETWORK 5 X 47K BUSSED144499R12RES NETWORK 9 X 47K BUSSED144673R13RES NETWORK 9 X 47K BUSSED144673R14RES NETWORK 9 X 47K BUSSED144673R18RES MF 100 OHM 1% 1/4W144568R19RES MF 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% 1/4W144642R24RES NETWORK 2 X 22K ISO144689R25RES FP 47 OHM 5% 1/4W137106R26RES NETWORK 2 X 22K ISO144689R27RES NETWORK 2 X 22K ISO144689R28RES NETWORK 2 X 22K ISO144689R29RES NETWORK 2 X 22K ISO144689R30RES MF 10 OHM 1% 1/4W144553R31RES MF 4.99K 1% 1/4W144521R32RES 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 ISO144685173PARTS LIST Contd.Ref. No.DescriptionPart No.Ref. No. DescriptionPart No.R83RES FP 10 OHM 5% 1/4W137105R100RES MF 10K 1% 1/4W144504R101RES MF 10K 1% 1/4W144504R102RES NETWORK 4 X 22K BUSSED144668R105RES MF 10K 1% 1/4W144504R131RES 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% 1/4W144526R202RES NETWORK 2 X 22K ISO144689R203RES NETWORK 2 X 22K ISO144689R204RES NETWORK 2 X 22K ISO144689R205RES NETWORK 2 X 22K ISO144689R206RES NETWORK 2 X 22K ISO144689R300RES MF 47.5K 1% 1/4W144526S20SWITCH ROT ENCODER 24 DETENT146255S21SWITCH ROT ENCODER 24 DETENT146255S22SWITCH ROT ENCODER 24 DETENT146255S23SWITCH ROT ENCODER 24 DETENT146255S24SWITCH ROT ENCODER 24 DETENT146255S25SWITCH ROT ENCODER NO DETENT146256TEST1CONN MALE 5 PIN 0.1 POST ASSY117216U3IC PROGRAMMED 133336 IR MICRO133545(U3)SOCKET IC 20 PIN178181Y1CRYSTAL 11.0592MHZ180051SPACER SNAP-IN PLASTIC .156017693TAPE MTG DBL COATED 1/8 THK0943322BLED PCB 750569C11CAP 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 35V066446DS2LED SQUARE RED058109DS3LED SQUARE RED058109DS4LED 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 RED058109DS17LED 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 BAR058146DS26LED 2 SEGMENT YELLOW BAR058146DS27LED 2 SEGMENT YELLOW BAR058146DS29LED 2 SEGMENT YELLOW BAR058146DS30LED 2 SEGMENT YELLOW BAR058146DS34LED ARRAY(5) YELLOW RECTANGLE 058127DS37LED 2 SEGMENT YELLOW BAR058146DS38LED ARRAY(5) YELLOW RECTANGLE 058127DS40LED 2 SEGMENT YELLOW BAR058146DS41LED ARRAY(5) YELLOW RECTANGLE 058127DS42LED ARRAY(5) YELLOW RECTANGLE 058127DS43LED ARRAY(5) YELLOW RECTANGLE 058127DS44LED ARRAY(5) YELLOW RECTANGLE 058127DS45LED ARRAY(5) YELLOW RECTANGLE 058127DS46LED ARRAY(5) YELLOW RECTANGLE 058127DS47LED 2 SEGMENT YELLOW BAR058146DS48LED 2 SEGMENT YELLOW BAR058146IC3IC DISPLAY DRIVER 4 DIGIT LED1336