McIntosh-MX135-av-sm维修电路原理图.pdf

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1、SERVICE MANUAL 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 Sch

2、ematic and PCB. 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 Parts List . 71 - 90 Exploded Views and Parts Lists . 91 - 94 Repacking Instructi

3、on . 95 CONTENTS A/V CONTROL CENTER Serial Number VJ1001 And Above SERIAL NO. VJ1001 And Above RadioFans.CN 收音机爱好者资料库 PERFORMANCE SPECIFICATIONS Audio Frequency Response Stereo: Left and Right Small speakers: 80Hz-20,000Hz Subwoofer: 20Hz-80Hz Left and Right Large speakers: 20Hz-20,000Hz Subwoofer:

4、 OFF Pro-Logic IIx: (Movie Processing Mode) Left, Center, Right, Small speakers: 80Hz-20,000Hz Surround Small speakers: 80Hz-20kHz Subwoofer: 20Hz-80Hz (Music Processing Mode) Left, Center, Right, Large speakers: 20Hz-20,000Hz Surround Large speakers: 20Hz-20,000Hz Subwoofer: OFF Dolby Digital and D

5、TS: Left, Center, Right, Small speakers: 80Hz-20,000Hz Surround Small speakers: 80Hz-20,000Hz Subwoofer: 20Hz-80Hz Left, Center, Right Large speakers: 20Hz-20,000Hz Surround Large speakers: 20Hz-20,000Hz Subwoofer: 20Hz-80Hz External Input Left, Center, Right, Left Surround, Right Surround: 20Hz-20,

6、000Hz Subwoofer: 20Hz-20kHz (no LP filtering) Rated Output All Modes: 2.0Vrms for full bit digital input Input Impedance 22k ohms Output Impedance 47 ohms at all outputs Maximum Output Voltage 9.5 Vrms Total Harmonic Distortion 0.005% at all outputs Sensitivity Analog Input: 400mV for 2.0V output Si

7、gnal To Noise Ratio All Outputs Greater than 90dB un-weighted. Greater than 100dB A weighted. Greater than 98dB CCIR. Maximum Input Signal Analog Input: 6Vrms Voltage Gain Analog Input to Output: 14dB Frequency Response +0, -0.5dB from 20Hz to 20,000Hz Tone Controls +12dB, -12dB from flat setting FM

8、 Tuner (TM1 option) 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: +0, -

9、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 Intermodulaton Distortion Mono: 0.25% Stereo: 0.45% Capture Ratio 1.2dB Alternate Channel Selectivity 75dB Spurious Response 100dB Image Resp

10、onse 75dB RF Intermodulation 65dB Stereo Separation 45dB at 100Hz, 45dB at 1,000Hz, 35dB at 10,000Hz SCA Rejection 65dB 2 RadioFans.CN 收音机爱好者资料库 General Specifications Power Requirements 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

11、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 MX135 for the correct voltage. Overall Dimensions Front Panel: 17-1/2 inches (44.5cm) wide, 9-7/16 inches (23.97cm) high. Depth behind front mounting panel is 19 inches (48.26cm) including

12、clearance for connectors. Panel clearance required in front of mounting panel is 1-1/8 inches (2.9cm). Weight 31.5 pounds (14.3kg) net, 55 pounds (25kg) shipping weight PERFORMANCE SPECIFICATIONS cont MX135 AM Tuner (TM1 option) Sensitivity 20uV external antenna input Signal To Noise Ratio 48dB at 3

13、0% modulation 58dB at 100% modulation 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 1. The heavy lines on the schematic denote the primar

14、y 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 board drawings, Square

15、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 RadioFans.CN 收音机爱好者资料库 4 SECTION LOCATIONS BOTTOM VIEW WITH

16、 COVER REMOVED TOP VIEW WITH COVER REMOVED RadioFans.CN 收音机爱好者资料库 56 MX135 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 MX135 1 RadioFans.CN 收音机爱好者资料库 121413 DISPLAY 050036 SH 1 OF 22A BC RadioFans.CN 收音机爱好者资料库 151716 DISPLAY 050036 SH 2 0

17、F 2 MX135 2A BC RadioFans.CN 收音机爱好者资料库 182019 2ASURROUND 050037 SH 1 OF 63 KEYBOARD SECTION 050053 2C LED SECTION 050054 2B DISPLAY CONTROL SECTION 050036 RadioFans.CN 收音机爱好者资料库 SURROUND 050037 SH 2 OF 63 212322 MX135 RadioFans.CN 收音机爱好者资料库 242625 3 SURROUND 050037 SH 3 OF 6 RadioFans.CN 收音机爱好者资

18、料库 2728 SURROUND 050037 SECTION 4 OF 63 MX135 RadioFans.CN 收音机爱好者资料库 2930 SURROUND 050037 SH 5 OF 63 RadioFans.CN 收音机爱好者资料库 SURROUND 050037 SH 6 OF 63 3132 MX135 RadioFans.CN 收音机爱好者资料库 SURROUND 0500373 3334 RadioFans.CN 收音机爱好者资料库 NOTES 3536 MX135 RadioFans.CN 收音机爱好者资料库 DATA 050033 SH 1 OF 24 37

19、38 RadioFans.CN 收音机爱好者资料库 394140 DATA 050033 SH 2 OF 24 MX135 RadioFans.CN 收音机爱好者资料库 S-VIDEO 050035 SH 1 OF 25 424443 RadioFans.CN 收音机爱好者资料库 454746 S-VIDEO 050035 SH 2 OF 25 MX135 RadioFans.CN 收音机爱好者资料库 485049 VIDEO 0500346 RadioFans.CN 收音机爱好者资料库 515352 INPUT 050032 SH 1 OF 27 MX135 RadioFans.C

20、N 收音机爱好者资料库 545655 INPUT 050032 SH 2 OF 27INPUT 0501637 RadioFans.CN 收音机爱好者资料库 COMPONENT VIDEO 0500398 MX135 575958 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. (Refer to Page 66.) Connec

21、t 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 for a Tuning Voltage Ran

22、ge 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 Capacitors: C106 (AM ANT) and C

23、61 (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.Connect an FM Signal Generato

24、r 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 tune to 87.5MHz. 5.Adjus

25、t 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), L3 (FM RF) and L4 (FM A

26、NT) 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 adjust T9 (FM DETector Prim

27、ary) 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 detune the Generator so

28、 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 from interference for thi

29、s 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 and adjust R71 (MPX SEPara

30、tion 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 generator output to 5uV and

31、 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) for maximum signal. 9.Tune

32、 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. RadioFans.CN 收音机爱好者资料库 TUNER 049084 9 6364 MX135 RadioFan

33、s.CN 收音机爱好者资料库 TUNER 0490849 6566 RAA1 SECTION10 RadioFans.CN 收音机爱好者资料库 BALANCED 050040 6768 10 MX135 RadioFans.CN 收音机爱好者资料库 BALANCED 05004010 6970 RadioFans.CN 收音机爱好者资料库 7172 PARTS LIST Ref No.DescriptionPart No. 2B 2A MX135 INTERCONNECT F1FUSE, 1A SLO-BLO 5 X 20089107 TB1AC TERMINAL BLOCK07409

34、1 T1POWER TRANSFORMER159302 DISPLAY PCB 050036 C1CAP MONO .01UF 50V 20% X7R061304 C4CAP MONO .1uF 50V 20% Z5U061305 C5CAP MONO .1uF 50V 20% Z5U061305 C6CAP MONO .1uF 50V 20% Z5U061305 C9CAP ELECT 47UF 35V066446 C10CAP ELECT 47UF 35V066446 C14CAP MONO 33PF 200V 5%NPO T&R061307 C15CAP MONO 33PF 200V 5

35、%NPO T&R061307 C21CAP ELECT 10UF 16V 4X5 CASE066382 C25CAP MONO .1uF 50V 20% Z5U061305 C26CAP MONO .1uF 50V 20% Z5U061305 C27CAP MONO .1uF 50V 20% Z5U061305 C29CAP MONO .1uF 50V 20% Z5U061305 C31CAP MONO .1uF 50V 20% Z5U061305 C32CAP MONO .1uF 50V 20% Z5U061305 C33CAP ELECT 10UF 16V 4X5 CASE066382 C

36、50CAP ELECT 10UF 16V 4X5 CASE066382 C51CAP MONO .1uF 50V 20% Z5U061305 C56CAP MONO .1uF 50V 20% Z5U061305 C57CAP MONO .1uF 50V 20% Z5U061305 C58CAP MONO .1uF 50V 20% Z5U061305 C100CAP MONO .1uF 50V 20% Z5U061305 C170CAP MONO 100PF 100V 10% NPO061300 C200CAP MONO .01UF 50V 20% X7R061304 C201CAP MONO

37、.01UF 50V 20% X7R061304 C202CAP MONO .01UF 50V 20% X7R061304 C203CAP MONO .01UF 50V 20% X7R061304 C204CAP MONO .01UF 50V 20% X7R061304 C205CAP MONO .01UF 50V 20% X7R061304 C206CAP MONO .01UF 50V 20% X7R061304 C207CAP MONO .01UF 50V 20% X7R061304 C208CAP MONO .01UF 50V 20% X7R061304 C209CAP MONO .01U

38、F 50V 20% X7R061304 C210CAP MONO .01UF 50V 20% X7R061304 C211CAP MONO .01UF 50V 20% X7R061304 D2DIODE ZENER 15V 1W070061 D300DIODE SILICON070047 D301DIODE SILICON070047 D302DIODE SILICON070047 DS1DISPLAY 12 CHARACTER058168 DS5LED GREEN 5MM HI-INTENSITY058165 DS6LED GREEN 5MM HI-INTENSITY058165 DS7LE

39、D GREEN 5MM HI-INTENSITY058165 DS8LED GREEN 5MM HI-INTENSITY058165 DS10LED GREEN 5MM HI-INTENSITY058165 DS11LED GREEN 5MM HI-INTENSITY058165 IC2IC VF ALPHANUMERIC CONTROLLER133347 IC4IC PAGE MODE EEPROM133348 IC5IC PROGRAMMED VRSION OF 133343133342 IC6IC PROGRAMMED VRSION OF 133351133349 IC7IC PROGR

40、AMMED VRSION OF 133351133349 IC10IC PROGRAMMED VRSION OF 133343133342 IC11SRAM133227 IC13IC OCT 3-STT NONINVERTING133222 IC14133350 BCMS 133517 AFTER PRGRMMNG133350 IC15IC MICRO ROMLESS133386 IC16IC PROGRAMMED VRSION OF 133266133379 IC17IC PROGRAMMED VRSION OF 133343133342 IC20133406 BCMS 133518 AFT

41、ER PRGRMMNG133406 IC30IC NAND SCHMIT 2-IN X 4133192 IC31IC NAND SCHMIT 2-IN X 4133192 IC32IC NAND SCHMIT 2-IN X 4133192 IC50IC 8 BIT A/D SERIAL OUTPUT133366 IC75IC CPU SUPERVISOR133424 J1CONN MALE 10 POS117219 J3CONN MALE 7 PIN117217 J5SOCKET STRIP .025 SQ 20 PIN117642 J8CONN MALE 10 POS117219 J9_CO

42、NN MALE 5 PIN 0.1 POST ASSY117216 J10CONN MALE 10 POS117219 J11CONN FFC 18PIN117765 J19CONN MALE 10 POS117219 J21_CONN 9 PIN FEMALE117694 J25_CONN MALE 7 PIN117217 J26_CONN 4 PIN117215 Q1TRANSISTOR NPN SILICON132171 Q2TRANSISTOR PNP132224 Q50TRANSISTOR NPN132223 R1RES MF 47.5K 1% 1/4W144108 R5RES NE

43、TWORK 8X330 ISO144263 R6RES MF 47.5K 1% 1/4W144108 R7RES MF 1.74K 1% 1/4W144351 R8RES MF 10 OHM 1% 1/4W144157 R9RES NET 2 X 22K ISOLATED144366 R10RES NETWORK 5X47K BUSSED144254 R12RES NETWORK 9 X 47K BUS144250 R13RES NETWORK 9 X 47K BUS144250 R14RES NETWORK 9 X 47K BUS144250 R18RES MF 100 OHM 1/4W14

44、4196 R19RES MF 100 OHM 1/4W144196 R20RES MF 100 OHM 1/4W144196 R21RES MF 100 OHM 1/4W144196 R22RES MF 100 OHM 1/4W144196 R23RES MF 100 OHM 1/4W144196 R24RES NET 2 X 22K ISOLATED144366 R25RES FP 47 OHM 5% 1/4W137042 R26RES NET 2 X 22K ISOLATED144366 R27RES NET 2 X 22K ISOLATED144366 R28RES NET 2 X 22

45、K ISOLATED144366 R29RES NET 2 X 22K ISOLATED144366 R30RES MF 10 OHM 1% 1/4W144157 R31RES MF 4.99K 1/4W144098 R32RES MF 100 OHM 1/4W144196 R45RES NET 2 X 22K ISOLATED144366 R50RES NETWORK 9X1K ISO144280 R51RES NETWORK 9X1K ISO144280 R52RES NETWORK 9X1K ISO144280 R83RES FP 10 OHM 5% 1/4W137025 R100RES

46、 MF 10K 1% 1/4W144053 R101RES MF 10K 1% 1/4W144053 R102RES NETWORK 4 X 22K BUS144234 R105RES MF 10K 1% 1/4W144053 R131RES NET 10K X8 RES B144253 R150RES NETWORK 4X1K ISO144276 R151RES NETWORK 4X1K ISO144276 R170RES MF 4.99K 1% 1/4W144098 R171RES MF 4.99K 1% 1/4W144098 R200RES NET 2 X 22K ISOLATED144

47、366 R201RES MF 47.5K 1% 1/4W144108 R202RES NET 2 X 22K ISOLATED144366 R203RES NET 2 X 22K ISOLATED144366 R204RES NET 2 X 22K ISOLATED144366 R205RES NET 2 X 22K ISOLATED144366 R206RES NET 2 X 22K ISOLATED144366 R300RES MF 47.5K 1% 1/4W144108 S3ENCODER OPTICAL ROTARY146246 S20POT ROTARY SWITCH QUADRATURE146255 S21POT ROTARY SWITCH QUADRATURE146255 S22POT ROTARY SWITCH QUADRATURE146255 S23POT ROTARY SWITCH QUADRATURE146255 S24POT ROTARY SWITCH QUADRATURE146