QSC-EX2500-pwr-sch 维修电路原理图.pdf

1N41481N4735A553210K-421.5K-.5W18p75K47ASPKR SIG+INPUTRN 909BAU 901-B356847+15 V-15 VDCGND REFGNDC 914R 940R 942C 916C 915R 941U 901-A21R 991D 953D 952GNDGNDPWR-ON6.2 VAUDIO INPUT STAGEC 95768 pHEAVY LINE SHOWSMAIN SIGNAL PATHAR 990R 993A470-1WR 992R 98847-16NPC 951CLIP10K-2WR 1000470-10VC 960470-10VC 959220-16NPC 952R 99410K-2WTHERMALR 989C 94347-35VC 94447-35V1N4004220035VPTC-60CBH-100D 937C 945R 100718 Vac1J 904J 903D 938D 942D 941D 947+24 V+15 V-15 V-24 V1N4004-15 V REG-24 V UNREGC 95410025 V+24 V UNREG+15 V REGTHERMALRELAY DRGND-24 V1432J 902B 90118 Vac27815U 904321D 9401N4746, 18VD 9391N4746, 18VC 95310025 V220035VC 9467915U 905321CT3XF PTCXF PTC45470-1WR 9821N4004D 9361N40041N40041N400410-25VC 941TO +15 VTO -15 VSPEAKER BUS47K-1WR 923MUTETHERMALLYCONNECTEDTO Q 911U 9105K5KVR 903VR 9028.2K-2W.0022TO +60 V RAILDGS2.7-2WMUR15102 PL2 PL.22-3W6 PL22-1W2SA13026 PL.22-3W6 PL2SC32816PL22-1W4.7-1W4.7-1W2SA1306B2 PL.102.7-2W2 PLDGSDGSMUR1510.10.1015K750K750K1K1K3323321N5955A1N5955A1N4148A1K-42.7K55321N54022uH10-2W4 PL.1012345678+15 V-15 VACDBU 902-AU 902-BC 956R 995C 955RN 910R1001R 947R 943R 944R 948R 945R 9461N4148D 921180 VD 923D 922D 924180 V7Q 903Q 904R 910C 902C 931C 932D 902C 929C 930L 901R 933R 934R 935R 936C 913R 929D 907C 912C 935C 93641381125HEATSINKGROUNDSPEAKEROUTPUTSPEAKERCOMMONTRANSFORMERCENTER TAPSPEAKER BUSR 930R 926R 928R 925R 924R 927Q 933Q 905Q 906Q 907Q 908Q 909Q 910R 937R 938R 939Q 934Q 911Q 912Q 913Q 914Q 915Q 916R 954R 953R 951R 952R 950R 949R 955AUDIO OUTPUT STAGED 905R 958C 917Q 917Q 918C 937C 938SWITCHING THRESHOLDREFERENCE6912.002222 FPR 907 22 FPDGSR 90622 FPU 907C 924470-10VR 959R 96022 FPR 9563K-2WD 906U 9087.5VD 9517.5VD 9651N4004D 904.0033C 9611N4004D 903VR 90110025 CR 931.01C 91150 OHMBIAS NETWORK4.7 FPSOURCE REFD 901JUMPER12000-63V+120 V RAIL12000-63V12000-63V12000-63VJUMPERN.C.-120 V RAIL-60 V RAIL+60 V RAIL+60 +120 V SWITCHED BUS-60 -120 V SWITCHED BUS+CURR LIM-CURR LIMNOTES.1. ALL RESISTORS 1/4-WATT, 5% UNLESS NOTED.2. ALL CAPACITORS 100V UNLESS NOTED.TOLERANCE 20% FOR ELECTROLYTIC TYPES, 10% ON OTHER TYPES.PC-004001-00PC-004002-00PC-004003-00PC-004004-00DISPLAY PCBINPUT PCBAC PCBSPKR PCBAMP CHANNEL101-199201-2991-29301-399401-49931-49501-599601-69951-69701-799801-89971-99901-UP (SAME BOARD FOR CH 1, CH2)PCB NUMBER DESCRIPTION CH 1 PARTS CH 2 PARTS PARTS IN COMMONPART NUMBERING SCHEDULE FOR PCBS USED IN EX-2500:SCHEDULE OF TEST POINTSJ 905-1THRUJ 905-8J 905-8 SWITCHED NEG AMPLIFIER RAIL-HIGH VOLTAGEJ 905-6 SWITCHED POS AMPLIFIER RAIL-HIGH VOLTAGEJ 905-6J 905-84. R 1007 IS POSITIVE TEMPERATURE COEFFICIENT RESISTOR MOUNTED TO HEAT SINK.6. ZENERS D 951, 965 MARKED 7.5 V TESTED FOR LOW LEAKAGE, QSC P/N QD-0007.5-ZT.7. ZENERS D 952, 955, 6.2V-500mW, TESTED FOR LOW LEAKAGE, QSC P/N QD-000024-QD.8. PARTS MARKED WITH TRIANGLE MUST BE REPLACED WITH EXACT TYPE ONLY.9. PARTS ENCLOSED WITHIN DOTTED OUTLINE HAVE VOLTAGES GREATER THAN 42V.+CURR LIM-CURR LIMJ 905-1J 905-2J 905-4J 905-3SCHEMATIC, AMPLIFIER CHANNEL, EX 2500SCHEMATIC, AMPLIFIER CHANNEL, EX 2500T 6+15 VT15-15 VT16PROCESSING BUFFER50C +O.5V90C +8VTHERM ADJUST, 0.5-8.5VTHERMAL SENSINGT 1T 3GROUNDMUTING INPUT CAP.TIMING CAP.T 2RELAYDRIVERT 4ON-OFF MUTING DELAYRELAYMUTE -24VRUN +15VMUTING BUSRUN 0VMUTE +8VSHUTDOWN MUTINGIC-000010-00MUTE BUST 5T 7THERMAL SENSE, 0-8VT 8THERMAL BUS, 0-8VT 9OP-AMP OUT - HF PROTECTSHUTDOWN DETECTORSTO MUTINGDC PROTECT SENSET10THERMAL LIMITINGT11IDLE -1.2VCLIP +3V PEAKS0-3Vac NORMAL AUDIO4.5-6.5Vac CLIPPING PEAKSMUTE +4.5VLIMITING THRESHOLD +4.5VCLIP RECTIFIER-BUFFERHIGH FREQDC RECTIFIERTHERMALT12T13T14CLIP BUSOP-AMP OUTOPTOCELLT25POSITIVE DRIVER, +0.6V IDLET24NEGATIVE DRIVER, -0.6V IDLET23POSITIVE BYPASS, +7.5V NORMAL, +2.5V SHORTPOSITIVE BIASCONTROLLERT22POSITIVE CURRENT FEEDBACK +3V PEAKT21POS CURRENT TRIMMERT20OUTPUT VOLTAGE FEEDBACKLOAD IMPEDANCESENSINGT19NEGATIVE TRIMMERBIAS ENABLENEGATIVE BIASCONTROLLERT18NEGATIVE CURRENT FEEDBACK, -3V PEAKT17NEGATIVE BYPASS, -7.5V NORMAL, -2.5V SHORTT7T8GATESOURCE REFGATE DRIVERLOSS-OF-SATSHUTDOWNT9HIGH RAILIC-000008-00T4SLEWNEG SUPPT6BOOTSTRAP CAPT1REF VOLTT2LOW RAILT3SHUTDOWNT5T6T7GATEGATE DRIVERLOSS-OF-SATSHUTDOWNIC-000009-00T5GATE PWRT4SLEWT3SHUTDOWNT2LOW RAILT1REF VOLTSOURCE REFCOMPARATORBIASBIAS1N41481N4735D 955D 9546.2 VJ 905-4 AMPLIFIER LOOP OPAMP OUTPUTJ 905-3 SWITCHING THRESHOLD REFERENCE VOLTAGEJ 905-2 POSITIVE LIMITING VOLTAGEJ 905-1 NEGATIVE LIMITING VOLTAGEPC-004200-00412SCHEMATIC AMPLIFIERCHANNEL, EX 2500BPHQ 3-20-91PHQ 3-22-911 1A PROD RELEASE PER ECO 1040 GLF 3-25-91C 9622SC3298B15 pB PER ECO 1095 GLF680pC3. BRIDGE RECTIFIER B 901, 1.5A, 200V.150 W, 100 V MINIMUM, ON-RESISTANCE 0.075 OHMS MAX.5. Q 903-904, 917-918 ARE SWITCHING FETS. QSC P/N QD-000030-QD,SCHMITT COMPARATORSCHMITT1.40KREVISED PER ECO 1219REVISED PER ECO 1194RDSC1A PROD RELEASE PER ECO 1040 GLF 3-25-916-10-919-13-919-13-91G.F.S.G.M.S.G.M.S.G.M.DREVISED PER ECO 1262LGLGRESISTANCE 100 OHM COLD, RISING AT 55 C. QSC P/N RE-000006-PTEREVISED PER ECO 1290PHQ11-6-91C 904 47-50VR 917 22K-1W3.9-2WR 932IN5402D 90810-9-91S.G.M.103K-2WR 9760.875PHQFREVISED PER ECO 1367, R 987-THERMAL1-27-92TO +15VR 987G10-14-92S.G.M.S.G.M.COSTA MESA, CALIFORNIAAUDIO PRODUCTS, INC.27KR 99613421081165121497590VTL 5C4U 903AREV G, 10-14-92, FOR PC-004200-00 REV EREVISED PER ECO 1462, R996, R991, U903 SGM13J 90110N.C.S.G.M.HREVISED PER ECO 1692, R989 WR12-15-92S.G.M.JREVISED PER ECO 1724, R989LG60.4K330KS.G.M.LGKREVISED PER ECO 2009, R9871-29-93SH-002500-00 LSH2500L1.FCDSH-002500-00 1 LL9-23-93S.G.M.SH2500K1.FCDR 9971KREVISED PER ECO 2259, R997 ACRadioFans.CN 收音机爱 好者资料库THIS DOCUMENT CONTAINS PROPRIETARYINFORMATION WHICH IS THE PROPERTYOF QSC AUDIO PRODUCTS, THAT MAY NOTBE DISCLOSED, REPRODUCED OR USEDWITHOUT EXPRESS WRITTEN CONSENT FROMQSC AUDIO PRODUCTS.REVISIONSZONEREVDESCRIPTIONDATEAPPROVEDSIZEFSCM NO.DWG NO.REVSHEETSCALECOSTA MESA, CALIFORNIAFINISHMATERIALCONTRACT NO.APPROVALSDRAWNCHECKEDISSUEDDO NOT SCALE DRAWINGPARTS LISTDATECAD FILE NO.APPLICATIONUSED ONNEXT ASSYNOTES: UNLESS OTHERWISE SPECIFIEDTOLERANCES ARE:DECIMALSANGLESDECIMALSDIMENSIONS PER ANSI Y14.5-1982UNLESS OTHERWISE SPECIFIEDDIMENSIONS ARE IN INCHES.-+O-+-+.XX.XXX1/2.02.010DEBURR EDGES .XXX R MAXXXCAUDIO PRODUCTS, INC.12341234DCABDCABCAD SEED FILE NO.TAB BLOCKDASH NO.DESCRIPTION-00CHAN 1 & 2-01-02CHAN 1CHAN 2USED ONMPA750, EX 2500MPA750, EX 2500MPA1100, MPX1200, EX 4000SCHEMATIC, BRIDGERECTIFIER PCBSH-000040-XXA1 OF 1Warren R.5-13-94NONESH0040A1.FCDAPROD RELEASE PER ECO 2297 WRRadioFans.CN 收音机爱 好者资料库CH 1 +INJ 31CH 1 -INGNDCH 2 -INCH 2 +INJ 32GNDGNDCH 1 SPKR SIGGNDGND-24 V+24 V-15 V REG+15 V REGGNDGNDCH 1 MUTECH 2 MUTECH 1 PWR-ONCH 2 PWR-ONCH 1 CLIP-LIMCH 2 CLIP-LIM1. ALL RESISTORS 1/4W, 5%.2. ALL CAPACITORS 100V3. J 32, 26-PIN CONNECTOR, TO J 1 ON FRONT DISPLAY BOARD PC-004001-00.4. PARTS FOR CH 1 NUMBERED 301-399.5. PARTS FOR CH 2 NUMBERED 401-499.6. PARTS IN COMMON TO BOTH CHANNELS NUMBERED 31-49.8. PARTS WITHIN DOTTED OUTLINE FOR USER MODIFICATION. SEE MANUAL.SCHEMATIC, EX-SERIES STANDARD INPUT BOARD.7. BOARD SHIPPED WITH W 301-304, W 401-404 MOUNTED AS SHOWN.470 p470 pW 303W 304SHIPPED XLR PIN 2 HIMOVE W 303, 304 TO ALTPOSITION FOR PIN 3 HI470 p470 pSHIPPED XLR PIN 2 HIMOVE W 303, 304 TO ALTPOSITION FOR PIN 3 HIC 402C 401W 403W 404SW 31INPUTSPARALLELMONO-BRIDGEW 401PIN 1 V+APIN 2 SP-APIN 3 GNDPIN 8 GNDPIN 4 +1N APIN 5 +OUT APIN 6 -IN APIN 7 -OUT APIN 9 CLIPKEYPIN 10 V-APIN 11 V- BPIN 12 CLIP 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 SPAREW 301T 3013 (4)1 (1)4 (5)6 (8)T 4011 (1)3 (4)6 (8)4 (5)W 402ANCR 301C 303C 403R 401NCACH 1 THERMALCH 2 THERMALCH 1 AC RELAYCH 2 AC RELAYCH 2 SPKR SIGPADS FOR LEVEL 1-AOR 2-A ACCESSORY PCBW 305W 306W 406W 405A3-POSXLR231AJ 301AXLR231AJ 401J 33A(6, 7)A(6, 7)W 302R 31R 32 24K220pC 31-INPUT CH 1+INPUT CH 1-INPUT CH 2+INPUT CH 24. NO CHANGE IN PINOUT OF J32, PINS 1-2620.0 KCENTERSTEREONOTES, ALL REV LEVELSNOTES, REV LEVELS A-B1. THE FIRST YEAR OF PRODUCTION EX AMPLIFIERS SHIPPED WITH PC-004002-00 REV A OR BC 302C 3012. FOR PC-004005-00 REV A, ADDED PADS 1-20 FOR LEVEL 1-A, 2-A INPUT ACCESSORY PCB5. SW-31 WAS REVISED ON PC-004005-00 REV A, BUT WILL NOT AFFECT FUNCTION OF UPPER SLOT PCB.3. ADDED J33, 5-PIN INPUT EXTENDER HEADER AND W305,306,405 & 406.1116461222121092135151817201924232625THIS DOCUMENT CONTAINS PROPRIETARYINFORMATION WHICH IS THE PROPERTYOF QSC AUDIO PRODUCTS, THAT MAY NOTBE DISCLOSED, REPRODUCED OR USEDWITHOUT EXPRESS WRITTEN CONSENT FROMQSC AUDIO PRODUCTS.REVISIONSZONEREVDESCRIPTIONDATEAPPROVEDSIZEFSCM NO.DWG NO.REVSHEETSCALECOSTA MESA, CALIFORNIAFINISHMATERIALCONTRACT NO.APPROVALSDRAWNCHECKEDISSUEDDO NOT SCALE DRAWINGPARTS LISTDATECAD FILE NO.APPLICATIONUSED ONNEXT ASSYNOTES: UNLESS OTHERWISE SPECIFIEDTOLERANCES ARE:DECIMALSANGLESDECIMALSDIMENSIONS PER ANSI Y14.5-1982UNLESS OTHERWISE SPECIFIEDDIMENSIONS ARE IN INCHES.-+O-+-+.XX.XXXDEBURR EDGES .XXX R MAXCAUDIO PRODUCTS, INC.12341234DCABDCABCAD SEED FILE NO.ABPROD REL PER ECO 756CHANGE VALUE R31, WAS 21 KCREVISED FOR MIN-SLOT, BR-SWSEE ECO 1097DSEE ECO 1297 BY PHQREVISE PER ECO 19161-24-92SGMSGM6-10-91SCHEMATIC DIAGRAMEX SERIES STANDARD,INPUT BOARDSH-004002-00D1 OF 1SH4002D1.FCDNONE6-18-90SH40002C1.FCDPC-004005-00EX/MPA SERIES131478LG.FOR PC-004005-00 REV B 7-15-93PAT QUILTERPC TERMS5051505502503565552504FUSE501R 501506507.068250 VACC 50153AC LO57SCHEMATIC FOR PC-004003-00 REV BSWITCHED AC54THIS DOCUMENT CONTAINS PROPRIETARYINFORMATION WHICH IS THE PROPERTYOF QSC AUDIO PRODUCTS, THAT MAY NOTBE DISCLOSED, REPRODUCED OR USEDWITHOUT EXPRESS WRITTEN CONSENT FROMQSC AUDIO PRODUCTS.REVISIONSZONEREVDESCRIPTIONDATEAPPROVEDSIZEFSCM NO.DWG NO.REVSHEETSCALECOSTA MESA, CALIFORNIAFINISHMATERIALCONTRACT NO.APPROVALSDRAWNCHECKEDISSUEDDO NOT SCALE DRAWINGPARTS LISTDATECAD FILE NO.APPLICATIONUSED ONNEXT ASSYNOTES: UNLESS OTHERWISE SPECIFIEDTOLERANCES ARE:DECIMALSANGLESDECIMALSDIMENSIONS PER ANSI Y14.5-1982UNLESS OTHERWISE SPECIFIEDDIMENSIONS ARE IN INCHES.-+O-+-+.XX.XXXDEBURR EDGES .XXX R MAXCAUDIO PRODUCTS, INC.12341234DCABDCABCAD SEED FILE NO.SCHEMATIC,AC PCB EX/MXa 3 SPPC-004003-00EX 3 SPLEORA5-10-93ANONE1 OF 1SH-004005-001.THIS DRAWING USED IN CONJUNCTION WITH SCHEMATIC DIAGRAMS :SH-004000-00, SH-004001-00, SH-004002-00, SH-004003-00, SH-004004-00,SH-004006-00, SH-002500-00, SH-002010-00, AND SH-002011-00 SEEFUSE.068250 VAC601R 601606607604605602603C 601SWITCHED ACSEE60R 50R 50R 501 / R 601508F5015095859F601FUSETABULATION BLOCK470 15W330 15W330 15W2.5 OHM 15A1.0 OHM COLD 30A1.0 OHM COLD 30A12A 250VMX 2000a (100V)MX 2000a (120V)MX 2000a (230V)2.5 OHM 15A1.0 OHM COLD 30A1.0 OHM COLD 30A20A 250V20A 250V12A 250VEX 2500 (100V)EX 2500 (120V)EX 2500 (230V)1.0 OHM COLD 30A1.0 OHM COLD 30A20A 250V20A 250VEX 4000 (100V)EX 4000 (120V)MODEL (V)LG.PROD RELEASE PER ECO 1846TAB BLK SEETAB BLK SEETAB BLKTAB BLKSEETAB BLKB5-18-93SGMSGM5-17-935-18-93SG MORALES15A 250V15A 250VREVISED PER ECO 2201 (EFF 8-5-94)SGM6-15-94CCSH4005C1.FCDSH4005B1.FCDREV PER ECO 2699 (EFF. 8-18-95)SIG. GND+ INPUT- INPUT1KTHERM BUS, 0-8VPWR-ON, 0-15V10uF+2N4410PWR GNDSPKR SIGNAL, 5V PKCLIP-LIM BUS, 0-4VMUTE BUS, 0-8V553210K100p100p1.5KREG. -15VSIG. GNDSIG. GND+ INPUT- INPUTTHERM BUS, 0-8VPWR-ON, 0-15VSPKR SIGNAL, 5V PKCLIP-LIM BUS, 0-4VMUTE BUS, 0-8VSIG. GNDPWR GNDC101RN10110K D(C)10K B10K C(D)10K AC102R102U101 B485671235VR101112319152117Q103R112C10846782419161814GAINCH 2 PINSNOTES1. ALL RESISTORS 1/4 WATT UNLESS SPECIFIED.2. ALL CAPACITORS 25V UNLESS SPECIFIED.3. CH 2 RESISTOR NETWORK SECTIONS ( ) WHEN DIFFERENT.4. CH 1 COMPONENTS NUMBERED 101-1995. CH 2 COMPONENTS NUMBERED 201-299.6. PARTS IN COMMON TO BOTH CHANNELS NUMBERED 1-99.7. U102, 202 ROHM BA6124 OR SAMSUNG KA2284/8513GRN1K-DRN103LD105PWR ONBA6124100YELYEL10uF330KR105LD103U102C105R107536R108LEVEL-30-10LD10410KR10610uFC1063.9KR109RN 1041K-C-24V+24VAC RELAY 2AC RELAY 1REG. +15V252610912J 1 26-PINSSCHEMATIC, EX-SERIES DISPLAY BOARD.8. LD 101, 102, HIGH-EFFICIENCY RED LED.9. LD 103, 104, HIGH-EFFICIENCY YELLOW LED.10. LD 105, HIGH-EFFICIENCY GREEN LED.22PC-004001-00, REV A.EX-SERIES DISPLAY BOARDSCHEMATIC DIAGRAM1 OF 1PAT QUILTER 6-19-90A PROD REL PER ECO 7561K-DR113634B REVISED PER ECO 1603 WR6-19-90SH-004001-00 1 BSH-004001-00 BFCAD: 004001SHSH4001B1.FDC9-29-9210uf10uf+4.7uf NP55321K536AR110R103R104C2C1C107U101 A123PWR GNDPWR GNDSPKR SIGNAL, 5V PKCLIP-LIM BUS, 0-4VRED100MPS2907.00331N40042N441014129RN10210K-D(A)10K-C(B)10K-B(C)10K-A(D)Q102Q101D101R101LD101RN1031K-C1K-B1K-A56MUTE BUS, 0-8VC103+470 10VC104REDLD102LIM-CLIP1.5KR1111K-B1K-AC 10910uFQ 1042N 44104.7KTHERM BUS 0-8VTO AMP +INPUTTO AMP -INPUTVcc SENSE RSIG. GND131011378-15V REG+24V UNREG-24V UNREG214J101, 201 14-PINS+15V REGTEMP-PROT