QSC-MX1000A-pwr-sch维修电路原理图.pdf

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1、NOTES. TOLERANCE 20% FOR ELECTROLYTIC TYPES, 10% ON OTHER TYPES. DISPLAY PCB INPUT PCB 101-199201-299 301-399401-49931-49 501-599601-69951-69 PCB NUMBER DESCRIPTION CH 1 PARTS CH 2 PARTS PARTS IN COMMON 125 W, 60 V MINIMUM, ON-RESISTANCE 0.030 OHMS MAX. SCHEDULE OF TEST POINTSETCJ 502-1 J 502-1 J 60

2、2-1 NEGATIVE LIMITING VOLTAGE J 502-2 J 602-2 POSITIVE LIMITING VOLTAGE J 502-4 J 602-4 AMPLIFIER LOOP OPAMP OUTPUT AMP PCB PC-004103-00AC PCB 5. Q 503, 504, 603, 604 ARE SWITCHING FETS. QSC P/N QD-000031-QD. 1K 1N4934 4.7V 1N4744A-15V +15 V-OPAMP 1N4744A-15V -15V-OPAMP 4.7V 1K 1N4744A-15V PC-001511

3、-00 PC-001512-00 PC-001513-00 5532 8 4 +15 V -15 V 10K10K A 21.5K-.5W 75K 450-5W 1N4934 .0022 A J 502-3 J 602-3 NOT USED 3. ALL CAPACITORS 100V UNLESS NOTED. 2. ALL RESISTORS 1/4-WATT, 5% UNLESS NOTED. 1. CH B IDENTICAL TO CH A, EXCEPT PART NUMBER SEQUENCE R 601, 602 ETC. 10-29 J 502-1 J 502-2 J 502

4、-6 J 602-6 SWITCHED POS AMPLIFIER RAIL-CAUTION, HIGH VOLTAGE J 502-8 J 602-8 SWITCHED NEG AMPLIFIER RAIL-CAUTION, HIGH VOLTAGE 1N4744A-15V 22-1W 2SA1302 .22-3W 2SC3281 22-1W 2SA1306B 2SC3298B .10 2.7-2W D GS .10 HEATSINK GROUND SPEAKER BUS AUDIO OUTPUT STAGE 22 FP 3K-2W SOURCE REF D GS 22 FP 2.7-2W.

5、10 .22-3W 3 PL 3 PL 3 PL 3 PL MUR 810 MUR 810 T7 T8 GATE SOURCE REF GATE DRIVER LOSS-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

6、T1 REF VOLT SOURCE REF COMPARATOR J 502-6 J 502-8 U 501 Q 504 C 509 6 1 BR 501 Q 502 Q 501 Q 508Q 509Q 510 Q 505Q 506Q 507 U 502 Q 503 D 501 C 501 TO RECT BR 502 QD-000031-QD QD-000031-QD J 502-4 100 BIAS 25 C .01 50 OHM BIAS NETWORK BIAS VR 501 D 506 15000-50V 15000-50V 15000-50V 12K 1N4934 1N4934

7、2K 2K 15A-125V 15A-125V J 501 3 4 BR 502 F 502 F 504 15A-125V 15A-125V 5 C 511 15000-50V 2uH 5.6-2W L 501 .10 J 52-6 TO RECT BR 501 J 52-5 SPEAKER OUTPUT SPEAKER COMMON K 501 NC NO QSC PART SW-000029-SW TRANSFORMER CENTER TAP 2 12K 10K-2W 100K 220 NP 1N4004 UTIL TO PWR-PROT LED 1N4004 SPKR-BUS 100K

8、1N4004 100K J 52-2, CH B J 52-3, CH B HEATSINK GROUND IN5402 1N5402 10-2W AUDIO INPUT STAGE 150 3.3-1W 1N4934 TO +48 V 1 (7) 3 (5) 2 (6) 6 (2)7 (1) 5 (3) PC-001510-00 AMPLIFIER PCBPC-001510-00 AMPLIFIER PCB GAIN SEND GAIN RETURN GAIN GROUND CLIP SEND +INPUT -INPUT 1. BOARD SHIPPED WITH W 301-304, W

9、401-404 MOUNTED AS SHOWN. 2. PARTS WITHIN DOTTED OUTLINE FOR USER MODIFICATION. SEE MANUAL. INPUT PCB NOTESINPUT PCB NOTES SPEAKER BUS -30 LED SPEAKER BUS SIG GND -30 LED RELAY CKT R 537 3K-2W RN 502-CRN 502-D U 503-A (U 603-B) C 521 R 535 R 546 D 510 R 507 C 506 R 522 D 514 D 519 D 521C 526 C 520 R

10、 540R 541 C 519 R 548 R 538 R 542 C 518 C 523 D 520 C 524 .022 R 547 U 503-B (U 603-A) R 511 C 508 D 505 D 508 VR 502 VR 503 D 507 R 518 R 517 R 502 R 501 R 519R 520R 521 D 513 D 512 R 515R 513R 514 R 510 C 525 D 522 D 511 R 512 R 536 R 539 D 509 R 503 C 503 R 505 R 508C 505 D 502 C 513 R 525 C 514

11、R 527 R 523 10-2W R 532 BR 503 C 517D 516 C 516R 531 C 515 D 518R 528 Q 511 2N 4410 R 530 RN 501 B-C RN 601 A-B RN 501-A RN 601-D 100K Q 512 2N 2907A D 515 RN 501 D RN 601 C LD 501 Q 513 2N 4410 270 R 533 C 512 R 504 C 510 R 506 C 507 A J 51-2 J 51-1 CH-ACH B 7. BRIDGE RECTIFIER BR 503, 603, 1.5A, 1

12、00V. REV NOTES, REMOVE FOR RELEASE PRINTS. V+A V-B V+B LAST USED REFERENCE DESIGNATORS BR 503-603 C 526-626 J 503-603 L 501-601 LD 501-601 Q 513-613 U 503-603 VR 503-603 BRIDGE RECTIFIER CAPACITOR DIODE JUMPER INDUCTOR LED TRANSISTOR RESISTOR RESISTOR NETWORK INTEGRATED CIRCUIT VARIABLE RESISTOR CHA

13、NNEL A-B 6 1 6-PIN MATE-LOK 3 4 5 2 J 601 TO ISOLATED SECONDARY WINDINGS SAME VOLTAGES AS CHANNEL A. SPEAKER OUTPUT SPEAKER COMMON CH B TRANSFORMER CONNECTIONS J 52-2 J 52-3 CH B TRANSFORMER PTC CH B SPEAKER OUTPUT CH B IS LAID OUT ON RIGHT SIDE OF PC-001510-00 CIRCUIT SAME AS CHANNEL A ABOVE. SCHMI

14、TT COMPARATOR SCHMITT 7.5K-2W R 101 HEAVY LINE SHOWS MAIN SIGNAL PATH GAIN VR 101 CH A 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 -30 A CH 1 +IN J 301 J 31 CH 1 -IN GND CH 2 -IN CH 2 +IN A J 401 C 402C 401 Tip Ring Gnd 1/4RTS BARRIER STRIP

15、 1/4RTS EXPANDER PADS INPUTS PARALLEL MONO BRIDGE STEREO C 301C 302 INPUT JACK T 401 1 (1) 3 (4)6 (8) 4 (5) R 401 C 403 W 401 W 402 T 301 3 (4) 1 (1)4 (5) 6 (8) R 301 C 303 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 PIN 5 +OUT A PIN 6 -I

16、N A PIN 7 -OUT A PIN 9 CLIP CLIP A A C 101 CH B YEL 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 GND PIN 19 SP-B PIN 20 V+B PIN 21 SPARE PIN 22 SPARE CLIP-B A 9 10 R 103 LD 10

17、1 LD 104 LD 201 LD 204 A A A J 32 A R 32 J 33 J 10 16-LINE 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 R 31 20 K 24 K C 31 220 pF SPKR GND -30 YEL LD 102 C 102 .0033 J 101 J 503 7 X 2 PIN HEADER J 201 J

18、 603 (CH B) 1K R 545 A 10K RN 502-A RN 502-B 10K C 522 1N49341N4934 .001 .001 A 47 R 544 SCHEMATIC, 2-CH POWER AMPLIFIER, MX-1000-ASCHEMATIC, 2-CH POWER AMPLIFIER, MX-1000-A 3K-5W 3K-5W 3K-5W 3K-5W 1.5K 75-1W PART NUMBERING SCHEDULE FOR PCBS USED IN MX-1000-A: 3.3-1W 3.3-1W 1N4934 R 524 10-2W R 526

19、10-2W R 509 22K-1W SW-000031-SW QSC P/N SW-31 3. TRANSFORMER PIN NUMBERS: 1-6 TRIAD TY-144P (1-8 JENSEN JT 8043) C 504 47-50V A (6,7) A (6,7) 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 15 16 R 203 4. R 516, 616 IS POSITIVE TEMPERATURE COEFFICIENT RESISTOR, MTD

20、TO HEAT SINK. RESISTANCE 100 OHM COLD, RISING AT 85 C. QSC P/N RE-000000-PT. 6. ZENERS D 517, 617, MARKED 7.5 V, LOW LEAKAGE, QSC P/N QD-0007.5-ZT. 8. PARTS MARKED WITH TRIANGLE REPLACE WITH EXACT TYPE ONLY. 9. PARTS WITHIN DOTTED OUTLINE VOLTAGES GREATER THAN 42V. 3 1 6 8 5 7 10 11 12 9 2 1 7 6 3 4

21、 RELAY CKT 4 BR 101 R 102 LD CLIP RED 103 RELAY STATUS 10 K 47 pF A C 202 .0033 LD 202 SPKR GND GAIN RETURN GAIN GROUND GAIN SEND -INPUT GAIN CH B VR 201 10 11 12 9 +INPUT 8 CLIP SEND CLIP-RED CH B BR 201 LD 203 5 R 202 10 K 47 pF RELAY STATUS A V-A V- CH A 82 SEE PART NUMBERING SCHEDULE. D 523D 524

22、 D 524-624 2.2K 2.2K 2.2K 2.2K RN 503-A-B RN 503-C RN 503-D C 527 220pF C 528 15 pF R 543 .12 330K 330K 7.5 V XF-PTC 3K-2W R 534D 517 R 529 J 51-3 J 51-4 R 516 PTC 90-C 12K R 549 82 K R 549-649 RN 503-603 901-UP (CH 1, CH2 ON SAME PCB) 13 14 14 13 +42 V RAIL +42 +84 V SWITCHED BUS +84 V RAIL -42 -84

23、 V SWITCHED BUS -42 V RAIL -84 V RAIL F 501 (603) F 503 (601) T-15 (T-18) T-14 (T-17) T-13 (T-16) T-9 (T-12) T-8 (T-11) T-7 (T-10) 6-PIN MATE-LOK XFORM CH A CH B REV B3, 11-4-91, PER PC-001510-00 REV B, PC-001511-00 REV B, PC-001512-00 REV B DOC NO. SH-001010-00 FILE SH-1010B.FCD, SEED FILE SH1010B3

24、.FCD 470 pF470 pF 634 634 470 pF470 pF 10K 10K 68 pF 68 pF 47NP-10V 18 pF 432 220-25V 470-16V 1W 1W 47-50V 10V 10-35V RE-000000-VP Tip Ring Gnd 220-25V 200V TO -84 V RAIL TO -42 V RAIL NOTES: UNLESS OTHERWISE SPECIFIED APPLICATION USED ONNEXT ASSY TOLERANCES ARE: DECIMALSANGLESDECIMALS DIMENSIONS PE

25、R ANSI Y14.5-1982 UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. -+ O -+-+ .XX.XXX DEBURR EDGES .XXX R MAX AUDIO PRODUCTS, INC. D SCHEMATIC, MX 1000a SH-001010-00 SH-001010-00 1 NONE MX 1000a LG. 1. PLOTTED AT 1/2 SCALE. WP-001001-00 B4 B4 SH-1010B.FCDS1000B41.FCD -42 V RadioFans.CN 收音机爱好者资料库

26、 120 VOLT AC PCB WIRING RISK OF FIRE- REPLACE WITH FUSE AS MARKED R901 R902 C901 901 902903904905 F901 906 907908909910 911912913914915 SWITCH RETURN (RED) RISK OF FIRE- REPLACE WITH FUSE AS MARKED R901 R902 C901 901 902903904905 F901 906 907908909910 911912913914915 SWITCH RETURN (RED) RISK OF FIRE

27、- REPLACE WITH FUSE AS MARKED R901 R902 C901 901 902903904905 F901 906 907908909910 911912913914915 SWITCH RETURN (RED) 100 VOLT AC PCB WIRING 230 VOLT AC PCB WIRING APROTO RELEASE, PHQ 901914 902 903 AC HI (SW) R 901FUSE PC TERMS 913 915 904 905 906 C 901 .068 250 VAC 910 911 R 902 907 AC LO 1.2K-5

28、W 908 909 912 SCHEMATIC OF AC HOOKUP PCB PRIMARYSECONDARY TERM NO TERM NO AC VOLTSLEAD COLOR LEAD COLOR BLK BLK/WHT WHT BRN BRN/YEL YEL 0 Vac 100 Vac 120 Vac 0 Vac 100 Vac 120 Vac (Coil on Leg One) (Coil on Leg Two) TEMPERATURE SENSOR PTC TEMPERATURE SENSOR PTC RED ORG GRN/WHT GRN/WHT PURP/WHT PURP/

29、WHT BLU BLU GRN WHT/RED WHT/ORG WHT/BLU WHT/BLU WHT/GRY WHT/GRN GRY BLU OR WHT BRN OR BLK 120 VAC 0 VAC AC LINE CORD PC-001510-00 MAIN AMPLIFIER PCB J 501 PIN 1 PIN 2 PIN 3 PIN 4 BLU OR WHT BRN OR BLK 0 VAC AC LINE CORD 0 VAC AC LINE CORD 100 VAC 230 VAC BRN BLU GRN/YEL PC-001511-00 DISPLAY AND GAIN

30、 CONTROLS J 601 J 52 J 51 PC-004103-00 AC HOOKUP PC-004103-00 AC HOOKUP PC-004103-00 AC HOOKUP J 503 J 603 J 101J 201J 10 PIN 4 PIN 6 PIN 5 PIN 2 PIN 1 PIN 3 PIN 4 PIN 6 PIN 5 PIN 2 PIN 1 PIN 3 PIN 3 PIN 2 PIN 5 PIN 6 RIBBON 14 LINES RIBBON 14 LINES RIBBON 16 LINES NOT USED NOT USED NOT USED AC SWIT

31、CH QSC P/N SW-000016-SW QSC P/N SW-000028-SW 55C FAN SPEED THERMOSTAT HEAT SINK MOUNTED TO AC HIGH TO AC SWITCH TO AC SWITCH TO AC SWITCH J 33 PC-001512-00 INPUT JACKS BINDING POST SPEAKER TERMINALS BLACK REDRED BLACK CH 1CH 2 QSC P/N MS-100003-FN 3.125 AC FAN SEE AC HOOKUPS SEE AC HOOKUPS QSC P/N W

32、C-003070-00 QSC P/N WC-003070-00 QSC P/N WC-003082-00 THERMOSTAT WIRE ASSY PC-004103-00 GRN OR GRN/YEL GRN OR GRN/YEL QSC P/N WC-003069-00 8-29-91 POWER TRANSFORMER XF-001010-00 T-1 T-2 T-3 T-4 T-5 T-6 T-7 T-8 T-9 T-10 T-11 T-12 T-13 T-14 T-15 T-16 T-17 T-18 T-19 T-20 T-21 T-22 B12-5-91PRODUCTION RE

33、LEASE PER ECO 1317, SGM PIN 4 PIN 1 NOT USED NOT USED NOT USED 12A 250V 20A 250V NOT USED NOT USED NOT USED 20A 250V C4-7-92REVISED PER ECO 1455, SGM SGM SGM SGM SGMDREVISED PER ECO 1579 LG9-23-92 EREVISED PER ECO 1735 WR 100/120V COLD USE 1 OHM COLD 230V USE 2.5 OHM NOTES: UNLESS OTHERWISE SPECIFIE

34、D 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 1 SCHEMATIC/WIRING SH-001011-00 SH-001011-00 E E SH1011E1.FCDNONESH1011

35、D1.FCD WP-001003-XXMX 1000a DIAGRAM MX 1000a 2-15-93 FAN SPEED THERMOSTAT (ORG) FAN (GRY) XFMR T-4 (BRN) XFMR T-1 (BLK) 0 VAC XFMR T-3 (WHT) 0 VAC XFMR T-6 (YEL) AC LO (WHT OR BLU) FAN SPEED THERMOSTAT (ORG) FAN (GRY) 100 VAC XFMR T-2 (BLK/WHT) 100 VAC XFMR T-5 (BRN/YEL) 100 VAC XFMR T-5 (BRN/YEL) 1

36、00 VAC XFMR T-2 (BLC/WHT) 0 VAC XFMR T-3 (WHT) 0 VAC XFMR T-6 (YEL) AC LO (WHT OR BLU) FAN SPEED THERMOSTAT (ORG) FAN SPEED THERMOSTAT (ORG) FAN (GRY) FAN 120 VAC (GRY) 120 VAC XFRMR T-1 (BLK) 120 VAC XFMR T-4 (BRN) FAN (GRY) XFMR T-3 (WHT) XFMR T-4 (BRN) XFMR T-5 (BRN/YEL) XFMR T-2 (BLK/WHT) FAN SPEED THERMOSTAT (ORG) FAN (GRY) XFMR T-1 (BLK) 0 VAC XFMR T-6 (YEL) AC LO (AC CORD BLU) FAN SPEED THERMOSTAT (ORG) RadioFans.CN 收音机爱好者资料库