McIntosh-MX136-av-sm维修电路原理图.pdf

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1、Performance Specifications . 2 - 3 Notes . 3 Rear Panel . 3 Section Location . 4 Block Diagram . 5 - 8 Interconnection Diagram . 9 - 11 Display Schematic and PCB . 12 - 19 Surround Schematic and PCB . 19 - 34 Data Schematic and PCB. 37 - 41 S-Video Schematic and PCB. 42 - 47 Video Schematic and PCB.

2、 48 - 50 Input Schematic and PCB . 51 - 56 Component Video Schematic and PCB . 57 - 60 Tuner AM/FM Alignment Procedure. 61 - 62 Tuner/RAA1 Schematic and PCB . 63 - 66 Balanced Schematic and PCB . 67 - 70 HDMI Module . 71 HDMI Power Supply . 72 Parts List . 73 - 90 Exploded Views and Parts Lists . 91

3、 - 94 CONTENTS SERVICE MANUAL Serial Number XM1001 And Above SERIAL NO. XM1001 And Above MX136 A/V CONTROL CENTER 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

4、,000Hz Subwoofer1: 0.5dB 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 Out

5、puts (Main) Maximum Voltage 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 Si

6、gnal Phono:50mV High Level:5V Unbalanced 10V Balanced Voltage Gain Phono to Tape/VCR Out:40dB Phono to Output (Main):54dB High Level to Tape/VCR 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

7、100 Volts, 50/60Hz at 65 watts 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 MX136 for the correct voltage. Overall Dimensions Width is 17-3/4 inches (45.

8、09cm) Height is 9-7/16 inches (23.97cm) including feet Depth is 18-3/4 inches (47.63cm) including the Front Panel and Knobs Weight 31 pounds (14.06Kg) net, 55 pounds (24.95Kg) shipping Shipping Carton Dimensions Width is 25 inches (63.5cm) Depth is 28 inches (71.12cm) Height is 18-3/8 inches (46.67c

9、m) FM Tuner Specifications Useable Sensitivity 14dBf which is 1.4uV across 75 ohms 50dB Quieting Sensitivity Mono:19dBf which is 2.4uV across 75 ohms Stereo:35dBf which is 15uV across 75 ohms Signal To Noise Ratio Mono:75dB Stereo:70dB Frequency Response Mono:+ 0, - 1dB from 20 to 15,000Hz Stereo:+

10、0, - 1dB from 20 to 15,000Hz Harmonic Distortion Mono:0.3% at 100Hz 0.3% at 1,000Hz 0.3% at 10,000Hz Stereo:0.45% at 100Hz 0.45% at 1,000Hz 0.65% at 10,000Hz Intermodulation Distortion Mono0.25% Stereo0.45% RadioFans.CN 收音机爱好者资料库 PERFORMANCE SPECIFICATIONS cont MX136 1. The heavy lines on the schem

11、atic denote the primary signal path. 2. 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 voltages are +/-10% with respect to ground. A high impedance (10 megaohm) voltmeter must be used. 3. On PC b

12、oard drawings, Square pad indicates: a. Polarized Capacitors - Positive b. Diodes - Cathode c. Others - Pin 1 4. WARNING Parts marked with the symbol have critical characteristics. Use only replacement parts recom- mended by the manufacturer. NOTES REAR PANEL 3 Capture Ratio 1.2dB Alternate Channel

13、Selectivity 75dB Spurious Response 100dB Image Response 75dB RF Intermodulation 65dB Stereo Separation 45dB at 100Hz 45dB at 1,000Hz 35dB at 10,000Hz SCA Rejection 65dB AM Tuner Specifications Sensitivity 20uV External Antenna Input Signal To Noise Ratio 48dB at 30% modulation 58dB at 100% modulatio

14、n Harmonic Distortion 0.5% maximum at 50% modulation Frequency Response 50Hz to 6kHz NRSC Adjacent Channel Selectivity 45dB minimum IHF Image Rejection 65dB minimum from 540 to 1600kHz IF Rejection 80dB minimum RadioFans.CN 收音机爱好者资料库 4 SECTION LOCATIONS BOTTOM VIEW WITH COVER REMOVED TOP VIEW WITH

15、COVER REMOVED RadioFans.CN 收音机爱好者资料库 MX136 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 91110 INTERCONNECT MX136 1 RadioFans.CN 收音机爱好者资料库 121413 DISPLAY 750565 SH 1 OF 22A BC RadioFans.CN 收音机爱好者资料库 151716 DISPLAY 750565 SH 2 0F 2 MX136 2A BC RadioFans.CN

16、收音机爱好者资料库 182019 2ASURROUND 750570 SH 1 OF 63 KEYBOARD SECTION 750568 2C LED SECTION 750569 2B DISPLAY CONTROL SECTION 750565 RadioFans.CN 收音机爱好者资料库 SURROUND 750570 SH 2 OF 63 212322 MX136 RadioFans.CN 收音机爱好者资料库 242625 3 SURROUND 750570 SH 3 OF 6 RadioFans.CN 收音机爱好者资料库 MX136 2728 SURROUND 750570

17、 SCH 4 OF 63 RadioFans.CN 收音机爱好者资料库 2930 SURROUND 750570 SCH 5 OF 63 RadioFans.CN 收音机爱好者资料库 MX136 SURROUND 750570 SCH 6 OF 63 3132 RadioFans.CN 收音机爱好者资料库 SURROUND 750570 PCB3 3334 RadioFans.CN 收音机爱好者资料库 SURROUND 750570 PCB3 3334 RadioFans.CN 收音机爱好者资料库 MX136 3536 NOTES RadioFans.CN 收音机爱好者资料库 37

18、38 DATA 750562 SCH 1 OF 24 RadioFans.CN 收音机爱好者资料库 394140 DATA 750562 SH 2 OF 24 MX136 RadioFans.CN 收音机爱好者资料库 S-VIDEO 750564 SH 1 OF 25 424443 RadioFans.CN 收音机爱好者资料库 454746 S-VIDEO 750564 SH 2 OF 25 MX136 RadioFans.CN 收音机爱好者资料库 485049 VIDEO 7505636 RadioFans.CN 收音机爱好者资料库 515352 INPUT 750561 SH 1

19、 OF 27 MX136 RadioFans.CN 收音机爱好者资料库 545655 INPUT 750561 SH 2 OF 27INPUT 7505617 RadioFans.CN 收音机爱好者资料库 COMPONENT VIDEO 7505668 575958 MX136 RadioFans.CN 收音机爱好者资料库 TUNER ALIGNMENT PROCEDURE AM ALIGNMENT PROCEDURE 1.Connect an AM Signal Generator to the RAA1 ”EXT ANT” pin of the 5 pin connector. (R

20、efer to Page 66.) Connect a Distortion Analyzer to the MX135 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 Trimmer Capacitor) for 26.0VDC at Connector R46. 4.Repeat steps 4 and 5 as necessary

21、for a Tuning Voltage Range of 3.0 to 26.0VDC. 5.Tune the Generator and Tuner to 600kHz, then adjust Coils: 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 adjust Trimmer Capacit

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

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

24、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 Trimmer Capacitor) for 24.5VDC at R46. 7.Repeat steps 4, 5 and 6 as necessary for a tuning range of 3.5VDC to 24.5VDC at R46. 8.Tune the Generator and Tuner to 90MHz and adjust Coils: L2 (FM MIX),

25、 L3 (FM RF) and L4 (FM ANT) for best sensitivity. 9.Tune the Generator and Tuner to 104MHz and adjust Trimmer Capacitors: C60 (FM MIX), C62 (FM RF) and C63 (FM ANT) for best sensitivity. 10. Repeat 8 and 9 until no improvement in sensitivity is noted. 11. Tune Tuner to 90MHz with no RF Input and adj

26、ust T9 (FM DETector Primary) for zero volts between TP1 and TP2 relative (connector J6). 12. Tune the Generator to 90MHz and adjust the RF Output to 1000uV and 100% MONO modulation at 1000Hz. Then adjust T8 (FM DETector SECondary) for lowest distortion. 13. Reduce the Generator Output to minimum and

27、 detune the Generator so the Receiver picks up only noise, then recheck the voltage between TP1 and TP2 (connector J6). Adjust T8 and C65 if needed. If it is not 0+/- 0.2VDC, repeat steps 11 and 12.If there is interference from a station on this frequency, tune the Tuner to a nearby frequency free f

28、rom interference for this measure- ment. 14. Tune the Generator to 90MHz with a 1000uV output. Then switch the Generator to stereo (left only) and adjust T10 (FM IF Transformer) for the lowest distortion at the TUNER IN/OUT RCA jacks. 15. Switch the Analyzer to the right channel TUNER IN/OUT jack an

29、d adjust R71 (MPX SEParation Pot) for best separation (minimum output). 16. Switch the Generator to the Right Channel and the Analyzer to the Left Channel. Adjust R71 (MPX SEParation Pot) and check for best separation (mini- mum output). 17. Disconnect voltmeter from TP1 and TP2 (J6). Reduce the gen

30、erator output to 5uV and adjust R73 (STEREO SWITCH Pot) so the MPX light (Dot next to Signal Strength number) just comes on. 6261 8.Note the initial position of R70, and then adjust R70 fully counter clockwise. Tune the Generator and Tuner to 1400kHz (20uV, 30% modulation), then Adjust T7 (AM IF) fo

31、r maximum signal. 9.Tune the Generator and Tuner to 1400kHz (100mV, 30% modulation). Slowly adjust R70 clockwise until the MX135 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 7505668 60 RadioFa

32、ns.CN 收音机爱好者资料库 MX136 TUNER 049084 SCH9A 6364 RadioFans.CN 收音机爱好者资料库 TUNER 049084 PCB 6566 RAA1 SECTION 049084 SCH and PCB9A9B RadioFans.CN 收音机爱好者资料库 MX136 BALANCED 750567 SCH 6768 10 RadioFans.CN 收音机爱好者资料库 BALANCED 750567 PCB10 6970 RadioFans.CN 收音机爱好者资料库 MX136 HDMI MODULE 75062311 71 RadioFan

33、s.CN 收音机爱好者资料库 HDMI POWER SUPPLY 75059912 72 RadioFans.CN 收音机爱好者资料库 INTERCONNECT Ref. No. DescriptionPart No. F1FUSE, 5 X 20 .80A IEC SLO-BLO089141 TB1AC TERMINAL BLOCK074091 T1POWER TRANSFORMER159340 MX136 PARTS LIST 2ADISPLAY PCB 750565 Ref. No. DescriptionPart No. C1CAP MONO .01UF 50V 20% X7R06

34、1345 C4CAP MONO .1UF 50V 20% Z5U061346 C5CAP MONO .1UF 50V 20% Z5U061346 C6CAP MONO .1UF 50V 20% Z5U061346 C14CAP MONO 33PF 200V 5% NPO061347 C15CAP MONO 33PF 200V 5% NPO061347 C25CAP MONO .1UF 50V 20% Z5U061346 C26CAP MONO .1UF 50V 20% Z5U061346 C27CAP MONO .1UF 50V 20% Z5U061346 C29CAP MONO .1UF 5

35、0V 20% Z5U061346 C31CAP MONO .1UF 50V 20% Z5U061346 C32CAP MONO .1UF 50V 20% Z5U061346 C33CAP ELECT 10UF 16V066580 C50CAP ELECT 10UF 16V066580 C51CAP MONO .1UF 50V 20% Z5U061346 C56CAP MONO .1UF 50V 20% Z5U061346 C57CAP MONO .1UF 50V 20% Z5U061346 C58CAP MONO .1UF 50V 20% Z5U061346 C100CAP MONO .1UF

36、 50V 20% Z5U061346 C170CAP MONO 100PF 100V 10% NPO061341 C200CAP MONO .01UF 50V 20% X7R061345 C201CAP MONO .01UF 50V 20% X7R061345 C202CAP MONO .01UF 50V 20% X7R061345 C203CAP MONO .01UF 50V 20% X7R061345 C204CAP MONO .01UF 50V 20% X7R061345 C205CAP MONO .01UF 50V 20% X7R061345 C206CAP MONO .01UF 50

37、V 20% X7R061345 C207CAP MONO .01UF 50V 20% X7R061345 C208CAP MONO .01UF 50V 20% X7R061345 C209CAP MONO .01UF 50V 20% X7R061345 C210CAP MONO .01UF 50V 20% X7R061345 C211CAP MONO .01UF 50V 20% X7R061345 C21CAP ELECT 10UF 50V066445 C10CAP ELECT 47UF 35V066446 C2CAP ELECT 1UF 50V066510 D300DIODE SILICON

38、070174 D301DIODE SILICON070174 D302DIODE SILICON070174 DS1DISPLAY VFD 12 CHARACTER058182 DS5LED GRN 5MM HI-INTENSITY058165 (DS5)SPACER LED112108 DS6LED GRN 5MM HI-INTENSITY058165 (DS6)SPACER LED112108 DS7LED GRN 5MM HI-INTENSITY058165 (DS7)SPACER LED112108 DS8LED GRN 5MM HI-INTENSITY058165 (DS8)SPAC

39、ER LED112108 DS9LED GRN 5MM HI-INTENSITY058165 (DS9)SPACER LED112108 DS10LED GRN 5MM HI-INTENSITY058165 (DS10)SPACER LED112108 DS11LED GRN 5MM HI-INTENSITY058165 (DS11)SPACER LED112108 IC2IC VFD DISPLAY DRIVER133549 (IC2)SOCKET IC 40-PIN178133 IC4IC OCTAL D TYPE FLIP FLOP133603 IC5IC QUAD ANALOG SWI

40、TCH HI SPEED 133342 IC6IC OCTAL BUFFER 3-STATE133349 (IC6)SOCKET IC 20 PIN178181 IC7IC OCTAL BUFFER 3-STATE133349 (IC7)SOCKET IC 20 PIN178181 IC10IC QUAD ANALOG SWITCH HI SPEED 133342 IC11IC SRAM133659 (IC11)SOCKET IC 28 PIN178126 IC13IC OCT 3-STT NONINVERTING133654 IC14IC PROG MX136 V1.1.10 1336651

41、33653 (IC14)SOCKET IC 32 PIN178165 IC15IC MICRO ROMLESS133386 (IC15)SOCKET IC 40-PIN178133 IC17IC QUAD ANALOG SWITCH HI SPEED 133342 IC20IC PROG DISPLAY CONTROL 133660133662 (IC20)IC SOCKET 84 PIN PLCC178185 IC30IC NAND SCHMIT 2-IN X 4133595 IC31IC NAND SCHMIT 2-IN X 4133595 IC32IC NAND SCHMIT 2-IN

42、X 4133595 IC50IC 8 BIT A/D SERIAL OUTPUT133366 IC75IC CPU SUPERVISOR133639 J1CONN MALE 10 POS117219 J3CONN MALE 7 PIN117217 J5CONN 10 PIN BOXED HEADER117795 J8CONN MALE 10 POS117219 J10CONN MALE 10 POS117219 J11CONN 18 PIN FFC117908 J19CONN MALE 10 POS117219 J21CONN 9 PIN FEMALE117932 J25CONN MALE 7

43、 PIN117217 J26CONN 4 PIN117215 PCB1PC BD DISPLAY129814 Q1TRANSISTOR NPN SILICON132317 Q2TRANSISTOR PNP SILICON132304 Q50TRANSISTOR NPN SILICON132317 R1RES MF 47.5K 1% 1/4W144526 R5RES NETWORK 8 X 330 ISO144679 R6RES MF 3.32K 1% 1/4W144518 R8RES MF 10 OHM 1% 1/4W144553 R9RES NETWORK 2 X 22K ISO144689

44、 R10RES NETWORK 5 X 47K BUSSED144499 R12RES NETWORK 9 X 47K BUSSED144673 R13RES NETWORK 9 X 47K BUSSED144673 R14RES NETWORK 9 X 47K BUSSED144673 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% 1/4W1

45、44579 R23RES MF 47.5 OHM 1% 1/4W144642 R24RES NETWORK 2 X 22K ISO144689 R25RES FP 47 OHM 5% 1/4W137106 R26RES NETWORK 2 X 22K ISO144689 R27RES NETWORK 2 X 22K ISO144689 R28RES 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 R32R

46、ES 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 1 73 RadioFans.CN 收音机爱好者资料库 PARTS LIST Contd. Ref. No.DescriptionPart No. Ref. No. DescriptionPart No. R83RES FP 10 OHM 5% 1/4W137105 R100RES

47、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% 1/4W144521 R200RES NETWORK 2 X 22K ISO144689 R201RES MF 47.5K 1% 1/4W144526 R202RES NETWORK 2 X 22K ISO144689 R203RES