McIntosh-MX-119-Service-Manual(1) 电路图 维修手册.pdf

《McIntosh-MX-119-Service-Manual(1) 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《McIntosh-MX-119-Service-Manual(1) 电路图 维修手册.pdf（52页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL Performance Specifications . 2 - 3 Notes . 3 Rear Panel . 3 Section Location . 4 Block Diagram . 5 - 8 Interconnection Diagram . 9 - 10 Display Schematic and PCB . 11 - 18 Surround Schematic and PCB . 19 - 32 Data Schematic and PCB. 33 - 36 S-Video Schematic and PCB. 37 - 40 Video Sch

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

3、ONTENTS A/V CONTROL CENTER Serial Number VS1001 And Above SERIAL NO. VS1001 And Above RadioFans.CN 收音机爱 好者资料库 PERFORMANCE SPECIFICATIONS FM Tuner 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 ac

4、ross 75 ohms Signal To Noise Ratio Mono: 75dB Stereo: 70dB Frequency Response Mono: +0, -1dB from 20 to 15,000Hz Stereo: +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 Intermodulaton

5、Distortion Mono: 0.25% Stereo: 0.45% Capture Ratio 1.2dB Alternate Channel 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 Sensitivity 20uV external antenna input Signa

6、l To Noise Ratio 48dB at 30% 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 Audio Frequency Response St

7、ereo: Left and Right Small speakers: 80Hz-20,000Hz Subwoofer: 20Hz-80Hz Left and Right Large speakers: 20Hz-20,000Hz Subwoofer: OFF Pro-Logic II: (Movie Processing Mode) Left, Center, Right, Small speakers: 80Hz-20,000Hz Surround Small speakers: 80Hz-7kHz Subwoofer: 20Hz-80Hz (Music Processing Mode)

8、 Left, Center, Right, Large speakers: 20Hz-20,000Hz Surround Large speakers: 20Hz-20,000Hz Subwoofer: OFF Dolby Digital and DTS: 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 L

9、arge speakers: 20Hz-20,000Hz Subwoofer: 20Hz-80Hz External Input Left, Center, Right, Left Surround, Right Surround: 20Hz-20,000Hz Subwoofer: 20Hz-20kHz (no LP filtering) Rated Output All Modes: 2.0Vrms for full bit digital input Input Impedance High Level: 22k ohms Phono: 47k ohms, 65pf 2 RadioFans

10、.CN 收音机爱 好者资料库 MX119 3 Output Impedance 100 ohms unbalanced 200 ohms balanced Maximum Output Voltage 9.5 Vrms Total Harmonic Distortion 0.005% at all outputs Sensitivity Analog Input: 400mV for 2.0V output Signal To Noise Ratio All Outputs 0.005% maximum from 20Hz to 20,000 Hz at rated output. Maxim

11、um 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 General Specifications Power Requirements 100 Volts, 50/60Hz at 65 watts 110 Volts, 50/60Hz at 65 watts 120 Volts, 50/60Hz at

12、 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 MX119 for the correct voltage. Overall Dimensions Width is 17-1/2 inches (44.45cm) Height is 7-5/8 inches (19.37cm) including feet Depth is 18-3/4 inches (47.63

13、cm) including the Front Panel and Knobs Weight 27 pounds (12.25kg) net, 46 pounds (20.87kg) shipping weight PERFORMANCE SPECIFICATIONS cont 1. The heavy lines on the schematic denote the primary signal path. 2. Unless otherwise noted, all voltages indicated on the schematics are measured under the f

14、ollowing 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. 4.On PC board drawings, Square pad indicates: a. Polarized Capacitors - Positive b. Diodes - Cathode c. Others - Pin 1 5.WARNING Parts mark

15、ed with the symbol have critical characteristics. Use only replacement parts recom- mended by the manufacturer. NOTES RadioFans.CN 收音机爱 好者资料库 4 SECTION LOCATION REAR PANEL MX119 56 BLOCK DIAGRAM 78 BLOCK DIAGRAM cont MX119 INTERCONNECT 910 1 DISPLAY 050167 SH 1 OF 22A BC 1112 MX119 1314 DISPLAY 0501

16、67 SH 2 0F 22 A BC 1516 2A DISPLAY 050167 CONTROL SECTION MX119 DISPLAY KEYBOARD SECTION 050053 2C DISPLAY LED SECTION 050169 2B 1718 1920 SURROUND 050168 SH 1 OF 6 3 MX119 2122 SURROUND 050168 SH 2 OF 63 2324 3 SURROUND 050168 SH 3 OF 6 MX119 2526 SURROUND 050168 SECTION 4 OF 63 2728 SURROUND 05016

17、8 SH 5 OF 63 MX119 SURROUND 050168 SH 6 OF 63 2930 SURROUND 0501683 3132 MX119 3334 DATA 050164 SH 1 OF 24 3536 DATA 050164 SH 2 OF 24 MX119 3738 S-VIDEO 050166 SH 1 OF 25 3940 5S-VIDEO 050166 SH 2 OF 2 MX119 4142 VIDEO 0501656 4344 VIDEO 0501656 MX119 4546 INPUT 050163 SH 1 OF 27 4748 INPUT 050163

18、SH 2 OF 27 MX119 4950 INPUT 0501637 COMPONENT VIDEO 0501808 5152 MX119 5354 COMPONENT VIDEO 0501808 TUNER 049084 9 5556 NOTE: SEE PAGE 57-58 FOR TUNER ALIGNMENT PROCEDURE. MX119 5758 AM ALIGNMENT PROCEDURE 1.Connect an AM Signal Generator to the RAA1 ”EXT ANT” pin of the 5 pin connector. (Refer to P

19、age 66.) Connect a Distortion 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 Trimmer Capacitor) for 26.0VDC at Connector R46. 4.Repeat steps 4 and 5 as necessary for a Tu

20、ning 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 Capacitors: C10

21、6 (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.Connect an FM

22、 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 tune to

23、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), L3 (FM

24、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 adjust T9 (

25、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 detune

26、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 from inte

27、rference 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 and adjust

28、 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 generator o

29、utput to 5uV and adjust R73 (STEREO SWITCH Pot) so the MPX light (Dot next to Signal Strength number) just comes on. 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 sig

30、nal. 9.Tune the Generator and Tuner to 1400kHz (100mV, 30% modulation). Slowly adjust R70 clockwise until the MX119 front panel signal strength display reads “9”. 10. Check both channels for signal to noise performance, and re-adjust R70 and as needed. 5960 RAA1 SECTION10 MX119 PARTS LIST INTERCONNE

31、CT Ref. No.DescriptionPart No. F1FUSE, 800MA SLO-BLO 5 X 20089117 TB1AC TERMINAL BLOCK074091 T1POWER TRANSFORMER159302 DISPLAY PCB 050167 C1CAP MONO .01UF 50V 20% X7R061304 C2CAP ELECT 1UF 50V066510 C14CAP MONO 33PF 200V 5%061307 C15CAP MONO 33PF 200V 5%061307 C25CAP MONO .1UF 50V 20% Z5U061305 C26C

32、AP 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 16V066382 C50CAP ELECT 10UF 16V066382 C51CAP MONO .1UF 50V 20% Z5U061305 C57CAP MONO .1UF 50V 20% Z5U061305 C58

33、CAP 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 .01UF 50V 20% X7R061304 C204CAP MONO .01UF 50V 20% X7R061304 C205CAP MONO .01UF 50V 20% X7R061304 C206CAP MONO .01UF 50V 20% X7R061304 C207CAP M

34、ONO .01UF 50V 20% X7R061304 C210CAP MONO .01UF 50V 20% X7R061304 C211CAP MONO .01UF 50V 20% X7R061304 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-INTENSITY058

35、165 (DS8)SPACER 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 D300DIODE SILICON070047 D301DIODE SILICON070047 D302DIODE SILICON070047 IC4IC OCTAL D-TYPE FLIP-FLOP13

36、3348 (IC4)SOCKET 20-PIN IC178124 IC5IC QUAD ANALOG SWITCH HI SPEED 133342 IC6IC OCTAL BUFFER 3-STATE133349 (IC6)SOCKET 20-PIN IC178124 IC7IC OCTAL BUFFER 3-STATE133349 (IC7)SOCKET 20-PIN IC178124 IC10IC QUAD ANALOG SWITCH HI SPEED 133342 IC11IC SRAM133227 (IC11)SOCKET IC 28 PIN178126 IC13IC OCT 3-ST

37、T NONINVERTING133222 (IC13)SOCKET 20-PIN IC178124 IC14IC PROG 133350 MX119133543 (IC14)SOCKET IC 32 PIN178165 IC15IC MICRO ROMLESS133386 (IC15)SOCKET IC 40-PIN178133 IC17IC QUAD ANALOG SWITCH HI SPEED 133342 IC20IC: PROG CONTROL CPLD 133406133548 (IC20)SOCKET IC PLCC 84 PIN178174 IC31IC NAND SCHMIT

38、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 J2SOCKET STRIP 14 PIN .025 SQ117644 J3CONN MALE 7 PIN117217 J5CONN 10 PIN BOXED HEADER117795 J7SOCKET STRIP 14 PIN .025 SQ117644 J8CONN MALE 10 POS117219 J9SOCKE

39、T STRIP 14 PIN .025 SQ117644 (J9)CONN MALE 5 PIN 0.1 POST ASSY117216 J10CONN MALE 10 POS117219 J11CONN FFC 18PIN117765 J12SOCKET STRIP 14 PIN .025 SQ117644 J19CONN MALE 10 POS117219 J25CONN MALE 7 PIN117217 J26CONN 4 PIN117215 PCB1PC BD DISPLAY129569 Q1TRANSISTOR NPN SILICON132171 Q50TRANSISTOR NPN

40、2K/REEL132223 R5RES NETWORK 8X330 ISO144263 R9RES NET 2 X 22K ISOLATED144366 R18RES MF 100 OHM 1% 1/4W144196 R19RES MF 47.5 OHM 1% 1/4W144442 R20RES MF 100 OHM 1% 1/4W144196 R21RES MF 182 OHM 1/4W 1%144273 R22RES MF 182 OHM 1/4W 1%144273 R23RES MF 47.5 OHM 1% 1/4W144442 R26RES NET 2 X 22K ISOLATED14

41、4366 R27RES NET 2 X 22K ISOLATED144366 R29RES NET 2 X 22K ISOLATED144366 R30RES MF 10 OHM 1% 1/4W144157 R31RES MF 4.99K 1% 1/4W144098 R32RES MF 100 OHM 1% 1/4W144196 R45RES NET 2 X 22K ISOLATED144366 R50RES NETWORK 9X1K ISO144280 R51RES NETWORK 9X1K ISO144280 R52RES NETWORK 9X1K ISO144280 R83RES FP

42、10 OHM 5% 1/4W137025 R100RES 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 BUSSED144253 R150RES NETWORK 4X1K ISO144276 R151RES NETWORK 4X1K ISO144276 R170RES MF 4.99K 1% 1/4W144098 R171RES MF 4.99K 1% 1/4W14409

43、8 R200RES NET 2 X 22K ISOLATED144366 R201RES MF 47.5K 1% 1/4W144108 R203RES NET 2 X 22K ISOLATED144366 R204RES NET 2 X 22K ISOLATED144366 R206RES NET 2 X 22K ISOLATED144366 1 2A Ref. No.DescriptionPart No. 61 62 R300RES MF 47.5K 1% 1/4W144108 U3IC:PROGRAMMED133336, IR MICRO133545 (U3)SOCKET 20-PIN I

44、C178124 Y1CRYSTAL 11.0592MHZ180051 DISPLAY PCB 050167 (Contd.) Ref. No.DescriptionPart No. C4CAP MONO .1UF 50V 20% Z5U061305 C5CAP MONO .1UF 50V 20% Z5U061305 C6CAP MONO .1UF 50V 20% Z5U061305 C10CAP ELECT 47UF 35V066446 C11CAP MONO 1000PF 50V 10% NPO061303 C12CAP MONO .1UF 50V 20% Z5U061305 C16CAP

45、MONO .1UF 50V 20% Z5U061305 C17CAP MONO 1000PF 50V 10% NPO061303 C19CAP ELECT 47UF 35V066446 C20CAP ELECT 47UF 35V066446 C21CAP ELECT 10UF 50V066445 DS1DISPLAY VFD 12 CHARACTER058182 DS2LED SQUARE RED058109 DS3LED SQUARE RED058109 DS4LED SQUARE RED058109 DS5LED SQUARE RED058109 DS6LED SQUARE RED0581

46、09 DS7LED SQUARE RED058109 DS8LED SQUARE RED058109 DS9LED SQUARE RED058109 DS10LED SQUARE RED058109 DS11LED SQUARE RED058109 DS12LED SQUARE RED058109 DS13LED SQUARE RED058109 DS14LED SQUARE RED058109 DS15LED SQUARE RED058109 DS16LED SQUARE RED058109 DS17LED SQUARE RED058109 DS34LED ARRAY(5) YELLOW R

47、ECTANGLE058127 (DS34)CONN 10 PIN117876 DS38LED ARRAY(5) YELLOW RECTANGLE058127 (DS38)CONN 10 PIN117876 DS41LED ARRAY(5) YELLOW RECTANGLE058127 (DS41)CONN 10 PIN117876 DS42LED ARRAY(5) YELLOW RECTANGLE058127 (DS42)CONN 10 PIN117876 DS43LED ARRAY(5) YELLOW RECTANGLE058127 (DS43)CONN 10 PIN117876 DS44LED ARRAY(5) YELLOW RECTANGLE058127 (DS44)CONN 10 PIN117876 DS45LED ARRAY(5) YELLOW RECTANGLE058127 (DS45)CONN 10 PIN117876 DS46LED ARRAY(