QSC-MX2000A-pwr-sch维修电路原理图.pdf

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1、1. DISPLAY PCB INPUT PCB 101-199201-299 301-399401-49931-49 501-599 PCB NUMBER DESCRIPTION CH 1 PARTS CH 2 PARTS PARTS IN COMMON SCHEDULE OF TEST POINTSETC 1K 1N4934 4.7V 1N4744A-15V +15 V-OPAMP 1N4744A-15V -15V-OPAMP 4.7V 1K 1N4744A-15V PC-001511-00 PC-001512-00 8 4 +15 V -15 V A 21.5K-.5W .0022 A

2、A 10-29 8.2K-2W 8.2K-2W 8.2K-2W 8.2K-2W 8.2K-2W 8.2K-2W PC-004003-00601-69951-69 PC-002010-00AMPLIFIER PCB901-UP (SAME BOARD FOR CH 1, CH2) AC PCB 8.2K-2W 8.2K-2W 22-1W 2SA1302 2SC3281 22-1W 2SA1306B 2SC3298B SPEAKER BUS AUDIO OUTPUT STAGE 22 FP 3K-2W SOURCE REF T7 T8 GATE SOURCE REF GATE DRIVER LOS

3、S-OF-SAT SHUTDOWN T9 HIGH RAIL IC-000008-00 T4 SLEWNEG SUPP T6 BOOTSTRAP CAP T1 REF VOLT T2 LOW RAIL T3 SHUTDOWN T5 T6 T7 GATE GATE DRIVER LOSS-OF-SAT SHUTDOWN IC-000009-00 T5 GATE PWR T4 SLEW T3 SHUTDOWN T2 LOW RAIL T1 REF VOLT SOURCE REF COMPARATOR BIAS NETWORK 12K 12K +58 V RAIL -58 -110 V SWITCH

4、ED BUS -58 V RAIL -110 V RAIL 1N5955A 1N5955A 1N4148 1N4148 5532 AUDIO INPUT STAGE A 3.3-1W 1. BOARD SHIPPED WITH W 301-304, W 401-404 MOUNTED AS SHOWN. 2. PARTS WITHIN DOTTED OUTLINE FOR USER MODIFICATION. SEE MANUAL. INPUT PCB NOTESINPUT PCB NOTES TO +58 V 1N4934 7.5K-2W R 101 HEAVY LINE SHOWS MAI

5、N SIGNAL PATH GAIN SEND GAIN RETURN GAIN GROUND CLIP SEND GAIN CH B VR 201 GAIN RETURN GAIN GROUND GND -INPUT GAIN SEND PROT-RED PWR-GRN CH A CH A A GND GND PROT-RED PWR-GRN CH B CH B +INPUT A -INPUT A V+ CH A SPKR SIG CH A SPEAKER BUS -30 A CH 1 +IN J 301 J 31 CH 1 -IN GND CH 2 -IN CH 2 +IN A J 401

6、 C 402C 401 Tip Ring Gnd 1/4RTS BARRIER STRIP 1/4RTS EXPANDER PADS INPUTS PARALLEL MONO BRIDGE STEREO C 301C 302 INPUT JACK T 401 1 (1) 3 (4)6 (8) 4 (5) W 401 W 402 T 301 3 (4) 1 (1)4 (5) 6 (8) W 302 W 301 PADS FOR INPUT ACCESSORY PCB PIN 1 V+A PIN 2 SP-A PIN 3 GND W 303 W 304 PIN 8 GND PIN 4 +1N A

7、PIN 5 +OUT A PIN 6 -IN A PIN 7 -OUT A PIN 9 CLIP CLIP A LD CLIP RED A C 101 SPEAKER BUS -INPUT CH B YEL SIG GND -30 LED RELAY CKT 1 2 3 4 5 6 7 C 201 V- CH B 8 X 2 PIN HEADER KEY W 403 W 404 PIN 10 V-A PIN 11 V- B PIN 12 CLIP B PIN 13 GND PIN 14 -0UT B PIN 15 -IN B PIN 16 +OUT B PIN 17 +IN B PIN 18

8、GND PIN 19 SP-B PIN 20 V+B PIN 21 SPARE PIN 22 SPARE CLIP-B A 9 10 V+A R 103 103 LD 101 LD 104 V-B LD 201 LD 204 LD 202 V+B A A A J 32 A R 32 J 33 J 10 16-LINE IN5402 2.7-2W D GS .10 D GS 22 FP 2.7-2W .10 MUR 810 MUR 810 QD-000031-QD QD-000031-QD 2uH 5.6-2W .10 TO RECT SPEAKER OUTPUT SPEAKER COMMON

9、NC NO QSC PART SW-000029-SW TRANSFORMER CENTER TAP 10K-2W 100K 220 NP 1N4004 UTIL 1N4004 SPKR-BUS 1N4004 100K +110 V RAIL 12000-63V 2PL 12000-63V 2PL 12,000-63V 2PL 12-PIN MATE-LOK 1 4 2 3 7 10 11 5 6 1N5402 10-2W 10-2W TO -110 V RAIL TO -58 V RAIL 390K 390K HEATSINK GROUND +58 +110 V SWITCHED BUS .

10、22-3W 5 PL 5 PL .22-3W HEATSINK GROUND 5 PL 5 PL 3 2 1 10K10K 5 6 7 100 BIAS 25 C .01 50 OHM BIAS 12 XF-PTC 9 100K 100K 270 -58 V U 903-A RN 902-BRN 902-A C 923 C 924 R 950 R 926 R 928 R 927 R 929 U 901 R 920R 956 D 920 D 922 D 923C 928 J 903-2 C 925 R 954 R 945 R 916 J 901 BR 901 BR 902 C 903, 904

11、C 905, 906 K 901 L 901 D 901 D 904 C 907 R 906 Q 906 U 903-B R 952R 955C 927 C 926 C 930 J 903-4 D 903 R 921 C 908 VR 901 D 910 D 906 D 908 D 907 D 909 J 903-6 R 917 R 922 J 903-8 Q 907 R 907 R 908 Q 908 R 939 Q 901Q 902Q 903Q 904Q 905 R 901R 902R 903R 904R 905 Q 910Q 911Q 912Q 913Q 914 R 910R 911R

12、912R 913R 914 D 911 R 944 R 943 R 942 R 932 BR 903 C 918D 914 R 935 C 919 R 934D 916 RN 901-D RN 901-C Q 917 2N4410 Q 916 2N2907 R 933 LD 901 R 936 R 938 RN 901-B RN 901-A D 915 2N4410 Q 915 C 913, 914 D 905 R 909C 909 Q 909 C 911, 912 R 925 R 923 C 915 D 919 R 957 C 916 R 924 D 912 U 902 J 903-1 C

13、929D 924 J 101 J 902 (CH A) J 201 J 902 (CH B) C 921 C 920 COMPONENTLAST USED BRIDGE RECTIFIER CAPACITOR DIODE INDUCTOR LED TRANSISTOR RESISTOR CONNECTOR VARIABLE RESISTOR BR 903 J 903 L 901 LD 901 Q 917 R 957 VR 903 10. BRIDGE RECTIFIER BR 101, 201, 903, 1.5A, 100V. PART NUMBERING SCHEDULE FOR PCBS

14、 USED IN MX-2000-A: R 948 R 946 R 949 R 947 BR 902 TO RECT BR 901 LAST USED REFERENCE DESIGNATORS, PC-002010-00 PC-002010-00 AMPLIFIER PCB, CH BPC-002010-00 AMPLIFIER PCB, CH B J 901, CH B CONNECTIONS TO CH B PCB SAME AS TO CH A. CONNECTIONS TO CH B PCB SAME AS TO CH A. 1 4 2 3 7 10 11 5 6 8 9 12 SC

15、HMITT COMPARATOR SCHMITT R 31 20 K 24 K C 31 220 pF SPKR GND 432 SPKR GND C 202 .0033 +INPUT 1K 10K RN 902-C R 951 10K RN 902-D A C 922-30 LED -30 YEL LD 102 C 102 .0033 R 919 3K-2W .001 R 915 PTC 90-C C 901 47-50V 1N4744A-15V D 902 C 902 .001 1N4934 3.3-1W 3.3-1W 1N4934 1N4934 2K 2K D 918 VR 903 VR

16、 902 D 917 LIM-LIM- LIM+LIM+ R 918 22K-1W 2 PL 12,000-63V 10-2W 10-2W R 930 R 931 .10 C 917 SW-000031-SW QSC P/N SW-31 3. TRANSFORMER PIN NUMBERS: 1-6 TRIAD TY-144P (1-8 JENSEN JT 8043) R 401 C 403 R 301 C 303 A (6,7) A (6,7) NOTES. TOLERANCE 20% FOR ELECTROLYTIC TYPES, 10% ON OTHER TYPES. 125 W, 60

17、 V MINIMUM, ON-RESISTANCE 0.030 OHMS MAX. 3. ALL CAPACITORS 100V UNLESS NOTED. 2. ALL RESISTORS 1/4-WATT, 5% UNLESS NOTED. PC-001512-00 MX-A SERIES INPUT PCBPC-001512-00 MX-A SERIES INPUT PCB PC-001511-00 MX-A SERIES DISPLAY PCBPC-001511-00 MX-A SERIES DISPLAY PCB SINK. RESISTANCE 100 OHM COLD, RISI

18、NG AT 85 C. QSC P/N RE-000000-PT. 8. PARTS MARKED WITH TRIANGLE REPLACE WITH EXACT TYPE ONLY. 9. PARTS WITHIN DOTTED OUTLINE VOLTAGES GREATER THAN 42V. SCHEMATIC, 2-CH POWER AMPLIFIER, MX-2000-ASCHEMATIC, 2-CH POWER AMPLIFIER, MX-2000-A J 903-1 J 903-1 NEGATIVE LIMITING VOLTAGE J 903-2 POSITIVE LIMI

19、TING VOLTAGE J 903-3 NOT USED J 903-4 AMPLIFIER LOOP OPAMP OUTPUT J 903-6 SWITCHED POS AMPLIFIER RAIL-CAUTION, HIGH VOLTAGE J 903-8 SWITCHED NEG AMPLIFIER RAIL-CAUTION, HIGH VOLTAGE PC-002010-00 AMPLIFIER PCBPC-002010-00 AMPLIFIER PCB 1. CH B IDENTICAL TO CH A. 4. R 915 IS POSITIVE TEMPERATURE COEFF

20、ICIENT RESISTOR, MTD TO HEAT 5. Q 906, 909 ARE SWITCHING FETS. QSC P/N QD-000031-QD. 6. ZENER D 913, MARKED 7.5 V, LOW LEAKAGE, QSC P/N QD-0007.5-ZT. 7. BRIDGE RECTIFIER BR 901, 902 ARE 40A, 400V, QSC P/N QD400400-BX GND GND -INPUT CH B +INPUT CH B 11 12 13 14 7.5K-2W R 201 A SPKR SIG CH B V+ CH B 1

21、5 16 R 203 432 3 1 6 8 5 7 10 11 12 9 2 1 5 7 10 11 12 9 6 3 4 V-A V- CH A 82 RELAY CKT 4 GAIN VR 101 CH A BR 101 R 102 A 47 pF 10 K RELAY SENSE 47 pF R 202 10 K CLIP-RED CH B CLIP SEND BR 201 +INPUT LD 203 8 A RELAY STATUS D 925 D 926 1N4934 1N4934 RN 903-A-B 2.2K 2.2K RN 903-D 2.2K RN 903-C 2.2K 4

22、7 R 941 C 931 220pF RESISTOR NETWORKRN 903 3K-2W R 937 7.5 V D 913 12K TO PWR-PROT LED R 940 120 K 13 14 14 13 .022 XFORM T-7 T-11 T-8 T-10 T-9 T-12 T-13 PLOTTED AT SCALE-TO-FIT, .625 Tip Ring Gnd 470 pF470 pF 470 pF470 pF 10K 10K 68 pF 68 pF 220-25V 47NP-10V 18 pF 280-1%60.4 K 200V 220-25V 1W 1W 47

23、0-16V 10V 220-1W47-50V 10-35V RE-000000-VP SGM 680-5W APPLICATION USED ONNEXT ASSY TOLERANCES ARE: DECIMALSANGLESDECIMALS DIMENSIONS PER ANSI Y14.5-1982 UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. -+ O -+-+ .XX.XXX DEBURR EDGES .XXX R MAX AUDIO PRODUCTS, INC. D SGM LG. NOTES : UNLESS OTHERW

24、ISE SPECIFIED NONE SH-002010-00 SCHEMATIC, MX 2000a WP-002002-00MX 2000a SH-002010-00 1 SGM 4.7 K 1N4934 150 R 953 D 921 C 932 .01 .10 D 926 C 932, NO C 910 SGM D1 D1 S2010D11.FCDSH2010D1.FCD REV D1, 3-2-94, PER PC-002010-00 REV C, PC-001511-00 REV B, PC-001512-00 REV C1 DOC NO. SH-002010-00 FILE S2

25、010D11.FCD, SEED FILE NO SH2010D1.FCD .047-400V C 933 C 935 C 934 C 936 .047-400V .047 400V .047 400V .047-400V .047-400V C 939 C 940 C 938 C 937 .047-400V .047-400V RadioFans.CN 收音机爱好者资料库 AC LINE CORD AC LINE CORD AC LINE CORD GRN/YEL AC SWITCH QSC P/N SW-000028-SW 55C FAN SPEED THERMOSTAT J 33 PC

26、-001512-00 INPUT JACKS BINDING POST SPEAKER TERMINALS CH 1CH 2 SEE AC HOOKUPS QSC P/N WC-003069-00 (FAR SIDE) PRIMARYSECONDARY TERM NOLEAD COLOR PURP/WHT PURP/WHT SEE PARA 3.3.2 0 Vac 100 Vac 120 Vac 0 Vac 100 Vac 120 Vac TERM NOAC VOLTSLEAD COLOR GRN BLU = CT RED T-1 T-2 T-3 T-4 T-5 T-6 T-7 T-8 T-9

27、 T-10 T-11 T-12 T-13 BLK BLK/WHT WHT BRN BRN/YEL YEL ORG GREY SCHEMATIC, XF-002010-00 POWER TRANSFORMER PC-002010-00 MAIN AMPLIFIER PCB (UPPER PCB, CH A SHOWN) J 902(J902-CH B) PIN 1 PIN 2 PIN 7 PIN 3 PIN 4 PIN 9 PIN 12 PIN 10 PIN 11 PIN 5 PIN 6 PIN 8 J 901 PIN 1 PIN 2 PIN 7 PIN 3 PIN 4 PIN 9 PIN 12

28、 PIN 10 PIN 11 PIN 5 PIN 6 PIN 8 (J 901-CH B) FAR SIDE-WIRING TO XF-002010-00, CH B AND SPEAKER TERMINALS SAME AS CH A. TO J 901, CH B PIN 10 PIN 11 PIN 5 PIN 6 QSC P/N WC-003053-00 QSC P/N WC-003053-00 120 VOLT AC PCB WIRING TO AC SW POL 1 (RED/BLK) TO AC SW POL 2 (RED/BLK) PC TERMS 50 51 505 502 5

29、03 56 55 FUSE .068 250 VAC 601 R 601 606 607 604 605 602 603 C 601 52 504 509 FUSE 501 R 501 506 508 507 R 902 .068 250 VAC C 501 53 AC LO 57 60 HZ, 330-15W 50 HZ, 470-15W SCHEMATIC FOR PC-004003-00 REV B SEE AC HOOKUP SEE AC HOOKUP SWITCHED AC SWITCHED AC 54 60 THERMOSTAT, CH A, CH B THERMOSTAT WIR

30、E ASSY 4.7 AC FAN QSC P/N MS-100004-FN FAN WIRE ASSY QSC P/N WC-003085-00 QSC P/N WC-003083-00 HEAT SINK MOUNTED EACH CH TO AC CORD-HI TO AC CORD-LO QSC P/N SW-000027-SW J 101J 201J 10 RIBBON 14 LINES RIBBON 14 LINES RIBBON 16 LINES PC-001511-00 DISPLAY AND GAIN CONTROLS 100 VOLT AC PCB WIRING TO AC

31、 SW POL 1 (RED/BLK) TO AC SW POL 2 (RED/BLK) FAN, 120 VAC 230 VOLT AC PCB WIRING ONE EACH FOR CHANNEL A AND B. R501 501 502503 5152 50 RISK OF FIRE- REPLACE WITH FUSE AS MARKED F601 603602 601 53545556 57 F501R601 C501 C601 585960 504505 507506 509 508 R50 605 607606 604 REV D R501 501 502503 5152 5

32、0 RISK OF FIRE- REPLACE WITH FUSE AS MARKED F601 603602 601 53545556 57 F501R601 C501 C601 585960 504505 507506 509 508 R50 605 607606 604 REV D R501 501 502503 5152 50 RISK OF FIRE- REPLACE WITH FUSE AS MARKED F601 603602 601 53545556 57 F501R601 C501 C601 585960 504505 507506 509 508 R50 605 60760

33、6 604 REV D 58 59 BLACK REDBLACK RED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED 12A 250V POL 1 AC SWITCH RETURN (RED) AC HIGH (BROWN) FAN SPEED THERMOSTAT HARNESS (WHT) TO FAN, AC RETURN (WHT) FAN SPEED THERMOSTAT HARNESS (BLK) POL 2 AC SWITCH CH A XFRMR T-6 (YEL) CH A XFRMR T-3 (WHT) CH

34、A XFRMR T-2 (BLK/WHT) CH A XFRMR T-5 (BRN/YEL) NOT USED NOT USED CH A XFRMR T-1 (BLK) CH A XFRMR T-4 (BRN)CH B XFRMR T-6 (YEL) CH B XFRMR T-3 (WHT) CH B XFRMR T-4 (BRN) CH B XFRMR T-1 (BLK) NOT USED RETURN (RED) CH B XFRMR T-2 (BLK/WHT) CH B XFRMR T-5 (BRN/YEL) AC LO (BLU) GRN/YEL 100 VAC (BRN) TO A

35、C PCB 0 VAC (BLU) TO AC PCB CH A XFRMR T-6 (YEL) CH A XFRMR T-3 (WHT) CH A XFRMR T-4 (BRN) CH A XFRMR T-1 (BLK) 120 VAC TO FAN (BLK) CH A XFRMR T-5 (BRN/YEL) CH A XFRMR T-2 (BLK/WHT) POL 1 AC SWITCH RETURN (RED) TO FAN, AC RETURN (WHT) FAN SPEED THERMOSTAT HARNESS (WHT) FAN SPEED THERMOSTAT HARNESS

36、(BLK) AC LO (BLU) CH B XFRMR T-4 (BRN) CH B XFRMR T-1 (BLK) POL 2 AC SWITCH RETURN (RED) CH B XFRMR T-2 (BLK/WHT) CH B XFRMR T-5 (BRN/YEL) CH B XFRMR T-3 (WHT) CH B XFRMR T-6 (YEL) 120 VAC (BRN) TO AC PCB 0 VAC (BLU) TO AC PCB GRN/YEL AC HIGH (BRN) CH A XFRMR T-6 (YEL) CH A XFRMR T-1 (BLK) CH A XFRM

37、R T-5 (BRN/YEL) CH A XFRMR T-2 (BLK/WHT) AC HIGH (BRN) TO AC SW POL 2 (RED/BLK) TO AC SW POL 1 (RED/BLK) CH A XFRMR T-3, (WHT) CH A XFRMR T-4 (BRN) FAN, 115 VAC (BLK) CH B XFRMR T-6 (YEL) CH B XFRMR T-3 (WHT) CH B XFRMR T-4 (BRN) CH B XFRMR T-5 (BRN/YEL) CH B XFRMR T-2 (BLK/WHT) POL 2 AC SWITCH RETU

38、RN (RED) CH B XFRMR T-1 (BLK) FAN SPEED THERMOSTAT HARNESS (BLK) AC LO (BLU) FAN SPEED THERMOSTAT HARNESS (WHT) TO FAN, AC RETURN (WHT) 230 VAC (BRN) TO AC PCB 0 VAC (BLU) TO AC PCB POL 1 AC SWITCH RETURN (RED) 100/120V COLD USE 1 OHM COLD 230V USE 2.5 OHM 100/120V COLD USE 1 OHM COLD 230V USE 2.5 O

39、HM NOTES: UNLESS OTHERWISE SPECIFIED APPLICATION USED ONNEXT ASSY TOLERANCES ARE: DECIMALSANGLESDECIMALS DIMENSIONS PER ANSI Y14.5-1982 UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. -+ O -+-+ .XX.XXX1/2.02.010 DEBURR EDGES .XXX R MAX AUDIO PRODUCTS, INC. D SH-002011-00 1 SH-002011-00 NONE SCHEMATIC/WIRING DIAGRAM MX 2000a WP-002003-XXMX 2000a E E SH2011E1.FCDSH2011CD.FCD 15A 250V 15A 250V RadioFans.CN 收音机爱好者资料库