QSC-MX2000A-pwr-sch 维修电路原理图.pdf

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1、1.DISPLAY PCBINPUT PCB101-199201-299301-399401-49931-49501-599PCB NUMBER DESCRIPTION CH 1 PARTS CH 2 PARTS PARTS IN COMMONSCHEDULE OF TEST POINTSETC1K1N49344.7V1N4744A-15V+15 V-OPAMP1N4744A-15V-15V-OPAMP4.7V1K1N4744A-15VPC-001511-00PC-001512-0084+15 V-15 VA21.5K-.5W.0022AA10-298.2K-2W8.2K-2W8.2K-2W8

2、.2K-2W8.2K-2W8.2K-2WPC-004003-00601-69951-69PC-002010-00AMPLIFIER PCB901-UP (SAME BOARD FOR CH 1, CH2)AC PCB8.2K-2W8.2K-2W22-1W2SA13022SC328122-1W2SA1306B2SC3298BSPEAKER BUSAUDIO OUTPUT STAGE22 FP3K-2WSOURCE REFT7T8GATESOURCE REFGATE DRIVERLOSS-OF-SATSHUTDOWNT9HIGH RAILIC-000008-00T4SLEWNEG SUPPT6BO

3、OTSTRAP CAPT1REF VOLTT2LOW RAILT3SHUTDOWNT5T6T7GATEGATE DRIVERLOSS-OF-SATSHUTDOWNIC-000009-00T5GATE PWRT4SLEWT3SHUTDOWNT2LOW RAILT1REF VOLTSOURCE REFCOMPARATORBIASNETWORK12K12K+58 V RAIL-58 -110 V SWITCHED BUS-58 V RAIL-110 V RAIL1N5955A1N5955A1N41481N41485532AUDIO INPUT STAGEA3.3-1W1. BOARD SHIPPED

4、 WITH W 301-304, W 401-404 MOUNTED AS SHOWN.2. PARTS WITHIN DOTTED OUTLINE FOR USER MODIFICATION. SEE MANUAL.INPUT PCB NOTESINPUT PCB NOTESTO +58 V1N49347.5K-2WR 101HEAVY LINE SHOWSMAIN SIGNAL PATHGAIN SENDGAIN RETURNGAIN GROUNDCLIP SENDGAINCH BVR 201GAIN RETURNGAIN GROUNDGND-INPUTGAIN SENDPROT-REDP

5、WR-GRNCH ACH AAGNDGNDPROT-REDPWR-GRNCH BCH B+INPUT A-INPUT AV+ CH ASPKR SIG CH ASPEAKER BUS-30ACH 1 +INJ 301J 31CH 1 -INGNDCH 2 -INCH 2 +INAJ 401C 402C 401TipRingGnd1/4RTSBARRIER STRIP1/4RTSEXPANDERPADSINPUTSPARALLELMONOBRIDGESTEREOC 301C 302INPUT JACKT 4011 (1)3 (4)6 (8)4 (5)W 401W 402T 3013 (4)1 (

6、1)4 (5)6 (8)W 302W 301PADS FOR INPUTACCESSORY PCBPIN 1 V+APIN 2 SP-APIN 3 GNDW 303W 304PIN 8 GNDPIN 4 +1N APIN 5 +OUT APIN 6 -IN APIN 7 -OUT APIN 9 CLIPCLIP ALDCLIPREDAC 101SPEAKER BUS-INPUTCH BYELSIG GND-30 LEDRELAY CKT1234567C 201V- CH B8 X 2 PIN HEADERKEYW 403W 404PIN 10 V-APIN 11 V- BPIN 12 CLIP

7、 BPIN 13 GNDPIN 14 -0UT BPIN 15 -IN BPIN 16 +OUT BPIN 17 +IN BPIN 18 GNDPIN 19 SP-BPIN 20 V+BPIN 21 SPAREPIN 22 SPARECLIP-BA910V+AR 103103LD 101LD 104V-BLD 201LD 204LD 202V+BAAAJ 32AR 32J 33 J 1016-LINEIN54022.7-2WDGS.10DGS 22 FP2.7-2W.10MUR 810MUR 810QD-000031-QDQD-000031-QD2uH5.6-2W.10TO RECTSPEAK

8、ER OUTPUTSPEAKER COMMONNCNOQSC PARTSW-000029-SWTRANSFORMER CENTER TAP10K-2W100K220 NP1N4004UTIL1N4004SPKR-BUS1N4004100K+110 V RAIL12000-63V 2PL12000-63V 2PL12,000-63V 2PL12-PIN MATE-LOK142371011561N540210-2W10-2WTO -110 V RAILTO -58 V RAIL390K390KHEATSINKGROUND+58 +110 V SWITCHED BUS.22-3W5 PL5 PL.2

9、2-3WHEATSINKGROUND5 PL5 PL32110K10K567100BIAS25 C.0150 OHMBIAS12XF-PTC9100K100K270-58 VU 903-ARN 902-BRN 902-AC 923C 924R 950R 926R 928R 927R 929U 901R 920R 956D 920D 922D 923C 928J 903-2C 925R 954R 945R 916J 901BR 901BR 902C 903, 904C 905, 906K 901L 901D 901D 904C 907R 906Q 906U 903-BR 952R 955C 92

10、7C 926C 930J 903-4D 903R 921C 908VR 901D 910D 906D 908D 907D 909J 903-6R 917R 922J 903-8Q 907R 907R 908Q 908R 939Q 901Q 902Q 903Q 904Q 905R 901R 902R 903R 904R 905Q 910Q 911Q 912Q 913Q 914R 910R 911R 912R 913R 914D 911R 944R 943R 942R 932BR 903C 918D 914R 935C 919R 934D 916RN 901-DRN 901-CQ 9172N441

11、0Q 9162N2907R 933LD 901R 936R 938RN 901-BRN 901-AD 9152N4410Q 915C 913, 914D 905R 909C 909Q 909C 911, 912R 925R 923C 915D 919R 957C 916R 924D 912U 902J 903-1C 929D 924J 101 J 902 (CH A)J 201 J 902 (CH B)C 921C 920COMPONENTLAST USEDBRIDGE RECTIFIERCAPACITORDIODEINDUCTORLEDTRANSISTORRESISTORCONNECTORV

12、ARIABLE RESISTORBR 903J 903L 901LD 901Q 917R 957VR 90310. BRIDGE RECTIFIER BR 101, 201, 903, 1.5A, 100V.PART NUMBERING SCHEDULE FOR PCBS USED IN MX-2000-A:R 948R 946R 949R 947BR 902TO RECT BR 901LAST USED REFERENCE DESIGNATORS, PC-002010-00PC-002010-00 AMPLIFIER PCB, CH BPC-002010-00 AMPLIFIER PCB,

13、CH BJ 901, CH BCONNECTIONS TO CH B PCBSAME AS TO CH A.CONNECTIONS TO CH B PCBSAME AS TO CH A.142371011568912SCHMITT COMPARATORSCHMITTR 3120 K24 KC 31220 pFSPKR GND432SPKR GNDC 202.0033+INPUT1K10KRN 902-CR 95110KRN 902-DAC 922-30 LED-30YELLD 102C 102.0033R 9193K-2W.001R 915 PTC 90-CC 901 47-50V1N4744

14、A-15VD 902C 902.0011N49343.3-1W3.3-1W1N49341N49342K2KD 918VR 903VR 902D 917LIM-LIM-LIM+LIM+R 918 22K-1W2 PL12,000-63V10-2W10-2WR 930R 931.10C 917SW-000031-SWQSC P/NSW-313. TRANSFORMER PIN NUMBERS: 1-6 TRIAD TY-144P (1-8 JENSEN JT 8043)R 401C 403R 301C 303A(6,7)A(6,7)NOTES.TOLERANCE 20% FOR ELECTROLY

15、TIC TYPES, 10% ON OTHER TYPES.125 W, 60 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 PCBPC-001511-00 MX-A SERIES DISPLAY PCBPC-001511-00 MX-A SERIES DISPLAY PCBS

16、INK. RESISTANCE 100 OHM COLD, RISING 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-AJ 903-1J 903-1 NEGATIVE LIMITING

17、VOLTAGEJ 903-2 POSITIVE LIMITING VOLTAGEJ 903-3 NOT USEDJ 903-4 AMPLIFIER LOOP OPAMP OUTPUTJ 903-6 SWITCHED POS AMPLIFIER RAIL-CAUTION, HIGH VOLTAGEJ 903-8 SWITCHED NEG AMPLIFIER RAIL-CAUTION, HIGH VOLTAGEPC-002010-00 AMPLIFIER PCBPC-002010-00 AMPLIFIER PCB1. CH B IDENTICAL TO CH A.4. R 915 IS POSIT

18、IVE TEMPERATURE COEFFICIENT RESISTOR, MTD TO HEAT5. 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-BXGNDGND-INPUT CH B+INPUT CH B111213147.5K-2WR 201ASPKR SIG CH BV+ C

19、H B1516R 203432316857101112921571011129634V-AV- CH A82RELAY CKT4GAINVR 101CH ABR 101R 102A47 pF10 KRELAY SENSE47 pFR 202 10 KCLIP-REDCH BCLIP SENDBR 201+INPUTLD 2038ARELAY STATUSD 925D 9261N49341N4934RN 903-A-B2.2K 2.2KRN 903-D2.2KRN 903-C2.2K47R 941C 931 220pFRESISTOR NETWORKRN 9033K-2WR 9377.5 VD

20、91312KTO PWR-PROT LEDR 940120 K13141413.022XFORMT-7T-11T-8T-10T-9T-12T-13PLOTTED AT SCALE-TO-FIT, .625TipRingGnd470 pF470 pF470 pF470 pF10K10K68 pF68 pF220-25V47NP-10V18 pF280-1%60.4 K200V220-25V1W1W470-16V10V220-1W47-50V10-35VRE-000000-VPSGM680-5WAPPLICATIONUSED ONNEXT ASSYTOLERANCES ARE:DECIMALSAN

21、GLESDECIMALSDIMENSIONS PER ANSI Y14.5-1982UNLESS OTHERWISE SPECIFIEDDIMENSIONS ARE IN INCHES.-+O-+-+.XX.XXXDEBURR EDGES .XXX R MAXAUDIO PRODUCTS, INC.DSGMLG.NOTES : UNLESS OTHERWISE SPECIFIEDNONESH-002010-00SCHEMATIC,MX 2000aWP-002002-00MX 2000aSH-002010-001SGM4.7 K1N4934150R 953D 921C 932.01.10D 92

22、6C 932, NO C 910SGMD1D1S2010D11.FCDSH2010D1.FCDREV D1, 3-2-94, PER PC-002010-00 REV C, PC-001511-00 REV B, PC-001512-00 REV C1DOC NO. SH-002010-00 FILE S2010D11.FCD, SEED FILE NO SH2010D1.FCD.047-400VC 933C 935C 934C 936.047-400V.047400V.047400V.047-400V.047-400VC 939C 940C 938C 937.047-400V.047-400

23、VRadioFans.CN 收音机爱好者资料库AC LINE CORDAC LINE CORDAC LINE CORDGRN/YELAC SWITCHQSC P/N SW-000028-SW55C FAN SPEED THERMOSTATJ 33PC-001512-00 INPUT JACKSBINDING POST SPEAKER TERMINALSCH 1CH 2SEE AC HOOKUPSQSC P/N WC-003069-00(FAR SIDE)PRIMARYSECONDARYTERM NOLEAD COLORPURP/WHTPURP/WHTSEE PARA 3.3.20 Vac10

24、0 Vac120 Vac0 Vac100 Vac120 VacTERM NOAC VOLTSLEAD COLORGRNBLU = CTREDT-1T-2T-3T-4T-5T-6T-7T-8T-9T-10T-11T-12T-13BLKBLK/WHTWHTBRNBRN/YELYELORGGREYSCHEMATIC, XF-002010-00 POWER TRANSFORMERPC-002010-00 MAIN AMPLIFIER PCB (UPPER PCB, CH A SHOWN)J 902(J902-CH B)PIN 1PIN 2PIN 7PIN 3PIN 4PIN 9PIN 12PIN 10

25、PIN 11PIN 5PIN 6PIN 8J 901PIN 1PIN 2PIN 7PIN 3PIN 4PIN 9PIN 12PIN 10PIN 11PIN 5PIN 6PIN 8(J 901-CH B)FAR SIDE-WIRING TOXF-002010-00, CH BAND SPEAKER TERMINALSSAME AS CH A.TO J 901, CH BPIN 10PIN 11PIN 5PIN 6QSC P/N WC-003053-00QSC P/N WC-003053-00120 VOLT AC PCB WIRINGTO AC SW POL 1 (RED/BLK)TO AC S

26、W POL 2 (RED/BLK)PC TERMS50515055025035655FUSE.068250 VAC601R 601606607604605602603C 60152504509FUSE501R 501506508507R 902.068250 VACC 50153AC LO5760 HZ, 330-15W50 HZ, 470-15WSCHEMATIC FOR PC-004003-00 REV BSEE ACHOOKUPSEE ACHOOKUPSWITCHED ACSWITCHED AC5460THERMOSTAT, CH A, CH BTHERMOSTAT WIRE ASSY4

27、.7 AC FANQSC P/N MS-100004-FNFAN WIRE ASSYQSC P/N WC-003085-00QSC P/N WC-003083-00HEAT SINK MOUNTED EACH CHTO AC CORD-HITO AC CORD-LOQSC P/NSW-000027-SWJ 101J 201J 10RIBBON14 LINESRIBBON14 LINESRIBBON16 LINESPC-001511-00 DISPLAY AND GAIN CONTROLS100 VOLT AC PCB WIRINGTO AC SW POL 1 (RED/BLK)TO AC SW

28、 POL 2 (RED/BLK)FAN, 120 VAC230 VOLT AC PCB WIRINGONE EACH FOR CHANNEL A AND B.R501501502503515250RISK OF FIRE-REPLACE WITHFUSE ASMARKEDF6016036026015354555657F501R601C501C601585960504505507506509508R50605607606604REV DR501501502503515250RISK OF FIRE-REPLACE WITHFUSE ASMARKEDF6016036026015354555657F

29、501R601C501C601585960504505507506509508R50605607606604REV DR501501502503515250RISK OF FIRE-REPLACE WITHFUSE ASMARKEDF6016036026015354555657F501R601C501C601585960504505507506509508R50605607606604REV D5859BLACK REDBLACK REDNOT USEDNOT USEDNOT USEDNOT USEDNOT USEDNOT USED12A 250VPOL 1 AC SWITCH RETURN

30、(RED)AC HIGH (BROWN)FAN SPEED THERMOSTAT HARNESS (WHT)TO FAN, AC RETURN (WHT)FAN SPEED THERMOSTAT HARNESS (BLK)POL 2 AC SWITCHCH A XFRMR T-6 (YEL)CH A XFRMR T-3 (WHT)CH A XFRMR T-2 (BLK/WHT)CH A XFRMR T-5 (BRN/YEL)NOT USEDNOT USEDCH A XFRMR T-1 (BLK)CH A XFRMR T-4 (BRN)CH B XFRMR T-6 (YEL)CH B XFRMR

31、 T-3 (WHT)CH B XFRMR T-4 (BRN)CH B XFRMR T-1 (BLK)NOT USEDRETURN (RED)CH B XFRMR T-2 (BLK/WHT)CH B XFRMR T-5 (BRN/YEL)AC LO (BLU)GRN/YEL100 VAC (BRN)TO AC PCB0 VAC (BLU)TO AC PCBCH 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/YE

32、L)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 (BLK)AC LO (BLU)CH B XFRMR T-4 (BRN)CH B XFRMR T-1 (BLK)POL 2 AC SWITCHRETURN (RED)CH B XFRMR T-2 (BLK/WHT)CH B XFRMR T-5 (BRN/YEL)CH B XFRMR T-3 (WHT)CH B XFRM

33、R T-6 (YEL)120 VAC (BRN)TO AC PCB0 VAC (BLU)TO AC PCBGRN/YELAC HIGH (BRN)CH A XFRMR T-6 (YEL)CH A XFRMR T-1 (BLK)CH A XFRMR 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

34、)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 SWITCHRETURN (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 PCB0 VAC (BLU)TO AC PCBPOL 1 AC SWITCH RETU

35、RN (RED)100/120VCOLDUSE 1 OHMCOLD230VUSE 2.5 OHM100/120VCOLDUSE 1 OHMCOLD230VUSE 2.5 OHMNOTES: UNLESS OTHERWISE SPECIFIEDAPPLICATIONUSED ONNEXT ASSYTOLERANCES ARE:DECIMALSANGLESDECIMALSDIMENSIONS PER ANSI Y14.5-1982UNLESS OTHERWISE SPECIFIEDDIMENSIONS ARE IN INCHES.-+O-+-+.XX.XXX1/2.02.010DEBURR EDGES .XXX R MAXAUDIO PRODUCTS, INC.DSH-002011-001SH-002011-00NONESCHEMATIC/WIRINGDIAGRAM MX 2000aWP-002003-XXMX 2000aEESH2011E1.FCDSH2011CD.FCD15A 250V15A 250VRadioFans.CN 收音机爱好者资料库