QSC-EX4000B-pwr-sch 维修电路原理图.pdf

《QSC-EX4000B-pwr-sch 维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《QSC-EX4000B-pwr-sch 维修电路原理图.pdf（6页珍藏版）》请在收音机爱好者资料库上搜索。

1、NOTES: 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.D1N41481N4735A553210K-418p75K47ASPKR SIG+INPUTRN 909BAU

2、 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 993A470-1W10K-2WR 992R 98847-16NPC 951CLIP10K-2WR 1000470-10VC 960470-10VC 959220-16NPC 952R 99410K-2WTHERMALC 94347-35VC 94447-3

3、5V1N4004220035VPTC-60CBH-100D 937C 945R 1007SCHEMATIC, AMPLIFIER CHANNEL, EX 4000-B18 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 V22

4、0035VC 9467915U 905321CT3XF PTCXF PTC45470-1WR 9821N4004D 9361N40041N40041N400410-25VC 941TO +15 VTO -15 VSPEAKER BUS47K-1WR 923TO +46 V RAILMUTETHERMALLYCONNECTEDTO Q 911U 9105K5KVR 903VR 902+CURR LIM-CURR LIMDGSQ 901.10C 9012.7-2WR 903R 902 22 FPDGSR 90122 FP15000-50V2 PLQ 902C 933C 934J 90110U 90

5、6+142 V RAILMUR1510D 901+94 V RAILDGS2.7-2WMUR151015000-50V2 PL7Q 903Q 904R 910C 931C 932D 902 22 FPDGSR 90622 FPU 907+46 V RAIL.10C 90215000-50V2 PL.22-3W6 PL22-1W2SA13026 PL.22-3W6 PL2SC32816PLIN540222-1W4.7-1W4.7-1W2SA1306B2SC3298B15000-50V2 PL.103.9-2W15KA1K-42.7K55321N54022uH10-2W4 PL.101234567

6、8+15 V-15 VACDBU 902-AU 902-BC 956R 995C 955RN 910R1001C 929C 930L 901R 933R 934R 935R 936C 913R 929D 907D 908R 932C 912C 935C 93641381125HEATSINKGROUNDSPEAKEROUTPUTSPEAKERCOMMONTRANSFORMERCENTER TAPSPEAKER BUSR 930R 926R 928R 925R 924R 927Q 933Q 905Q 906Q 907Q 908Q 909Q 910R 937R 938R 939Q 934Q 911

7、Q 912Q 913Q 914Q 915Q 916R 954R 953R 951R 952R 950R 949R 955+46 +94 +142 V SWITCHED BUSAUDIO OUTPUT STAGE-46 -94 -142 V SWITCHED BUSSWITCHING THRESHOLDREFERENCE6220p.00221N4004D 904.0033C 9611N4004D 903VR 901100BIAS25 CR 931.01C 91150 OHMBIAS NETWORK4.7 FP7.5VD 9512.7-2WDGSDGSMUR1510.10D 905R 958C 9

8、17Q 917Q 91822 FPR 959R 96022 FPR 9563K-2WU 908SOURCE REF7.5VD 965C 924470-10V15000-50V2 PLC 937C 9389MUR1510D 906DGSDGS15000-50V2 PLQ 919Q 920C 939C 94012C 921470-10VR 9623K-2WR 963R 96422 FP22 FPU 909-94 V RAIL-142 V RAILSOURCE REF.102.7-2WC 920R 9611N41481N4735D 955D 9546.2 VNOTES.1. ALL RESISTOR

9、S 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 (SAM

10、E BOARD FOR CH 1, CH2)PCB NUMBER DESCRIPTION CH 1 PARTS CH 2 PARTS PARTS IN COMMON.0022-46 V RAIL3K-2WR 976T 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

11、 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 RECT

12、IFIER-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 IMPEDAN

13、CESENSINGT19NEGATIVE TRIMMERBIAS ENABLENEGATIVE BIASCONTROLLERT18NEGATIVE CURRENT FEEDBACK, -3V PEAKT17NEGATIVE BYPASS, -7.5V NORMAL, -2.5V SHORTT7T8GATESOURCE REFGATE DRIVERSCHMIDTT COMPARATORLOSS-OF-SATSHUTDOWNT9HIGH RAILIC-000008-00T4SLEWNEG SUPPT6BOOTSTRAP CAPT1REF VOLTT2LOW RAILT3SHUTDOWNT5T7T8

14、GATESOURCE REFGATE DRIVERSCHMIDTT COMPARATORLOSS-OF-SATSHUTDOWNT9HIGH RAILIC-000008-00T4SLEWNEG SUPPT6BOOTSTRAP CAPT1REF VOLTT2LOW RAILT3SHUTDOWNT5T6T7GATEGATE DRIVERLOSS-OF-SATSHUTDOWNIC-000009-00T5GATE PWRT4SLEWT3SHUTDOWNT2LOW RAILT1REF VOLTSOURCE REFSCHMIDTTCOMPARATORT6T7GATEGATE DRIVERLOSS-OF-SA

15、TSHUTDOWNIC-000009-00T5GATE PWRT4SLEWT3SHUTDOWNT2LOW RAILT1REF VOLTSOURCE REFSCHMIDTTCOMPARATORSCHEDULE OF TEST POINTSJ 905-1THRUJ 905-8J 905-8 SWITCHED NEG AMPLIFIER RAIL-HIGH VOLTAGEJ 905-6 SWITCHED POS AMPLIFIER RAIL-HIGH VOLTAGEJ 905-84. R 1007 IS POSITIVE TEMPERATURE COEFFICIENT RESISTOR MOUNTE

16、D TO HEAT SINK.125 W, 60 V MINIMUM, ON-RESISTANCE 0.030 OHMS MAX.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

17、ENCLOSED WITHIN DOTTED OUTLINE HAVE VOLTAGES GREATER THAN 42V.3. BRIDGE RECTIFIER B 901, 1.5A, 100V.5. Q 901-904, 917-920 ARE SWITCHING FETS. QSC P/N QD-000013-QD OR QD-000031-QD.SCHEMATIC, AMPLIFIER CHANNEL, EX 4000-B+CURR LIM-CURR LIMBIASJ 905-1J 905-2J 905-4J 905-3J 905-4 AMPLIFIER LOOP OPAMP OUT

18、PUTJ 905-3 SWITCHING THRESHOLD REFERENCE VOLTAGEJ 905-2 POSITIVE LIMITING VOLTAGEJ 905-1 NEGATIVE LIMITING VOLTAGEPC-004200-006.8K41230.0K-.5W.15RESISTANCE 100 OHM COLD, RISING AT 55 C. QSC P/N RE-000006-PTPART NUMBERING SCHEDULE FOR PCBS USED IN EX-4000:C 903 47-50VR 911 22K-1WC 904 47-50VR 917 22K

19、-1WR 989TO +15VR 987590VTL 5C4U 903A791413125613421081127KR 99660.4K330KC 96210 pF750K750K1K1K3323321N4148R 947R 943R 944R 948R 945R 9461N4148D 921D 923D 922D 924.0022uF200VJ 905-6R 100210. Q 933 AND Q 934 MUST BE INSULATED FROM THIER HEATSINK (WHICH ARE CONNECTED TO GROUND).47C 963SH-0040000-001SH-

20、004000-00NONESCHEMATIC EX 4000BAMPLIFIER CHANNELEX 4000BLG.200 V200 V1N5956B1N5956BSGMSG MORALES11-01-916-22-94UUSH4000U1.FCDSH4000T1.FCDR 904REV U, 2-15-95, FOR PC-004200-00 REV KWP-004202-00WP-004202-01SVC CH MODRadioFans.CN 收音机爱 好者资料库THIS DOCUMENT CONTAINS PROPRIETARYINFORMATION WHICH IS THE PROP

21、ERTYOF 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 LI

22、STDATECAD 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.T

23、AB 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 32GNDG

24、NDCH 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

25、 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 FO

26、R 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 -I

27、N 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-POSXLR2

28、31AJ 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 301

29、2. 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 PRO

30、PRIETARYINFORMATION 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.APPROVALSDRAWNCHEC

31、KEDISSUEDDO 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.12341234D

32、CABDCABCAD 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 SERIES13

33、1478LG.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 USED

34、WITHOUT 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 SP

35、ECIFIEDTOLERANCES 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.

36、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 601508F5015095859F601FUSETABULA

37、TION 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

38、 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, 0-15

39、V10uF+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 B485671235VR101112319152117Q103R

40、112C10846782419161814GAINCH 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. U1

41、02, 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.

42、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.FDC9-29-9210uf10u

43、f+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