QSC-KSeries-spk-sch 维修电路原理图.pdf

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1、SCHEMATIC ASSOCIATION-PC-003311-00 FOR ALL MODELSWP-003311-00 K8WP-003312-00 K10WP-003313-00 K12WP-003314-00 KSUBCOMPONENT NOTES-2-WAY MEANS ONLY FOR K8/10/12SUB MEANS ONLY FOR KSUBVALUE AS SHOWN AFTER NOTEDNI MEANS DO NOT INSERTINPUT BOARD17 MAR 200931 AUG 2009ABCHG C13, C14, C25, R73, R77, R173 VA

2、LUE31 JUL 200929 JAN 2010CHG C52 TO Y1 TYPE. ECO 9591 CHG R141 AND R143 VALUE. ECO 9377CC1PROD RLSE W/O CHG. ECO 9034ADD D15, D16, ECO 9457PLUMBING SCHEDULEA1: MAIN PCB AUDIOMAIN BOARDC2: XCAP CHASSISP1: MAIN PCB POWERC1: INPUT PCB CHASSIS-GROUND SCHEDULE+/-VCC: AMPLIFIER RAILSVDD2: INPUT BOARD +7VV

3、DD1: MAIN BOARD +7V+/-15V_D: INPUT BOARD AUDIO+/-15V_C: INPUT BOARD RAW+/-15V_B: AMP CH 2 AUDIO+/-15V_A: AMP CH 1 AUDIO+/-15V: MAIN BOARD RAW-1. THIS DRAWING USED IN CONJUCTION WITH ASSEMBLY WP-003311-00.POWER_SUPPLYAMPDSPK SERIES 2-CH AMPSH-003311-00D. GALVANEVAN SHULTZ29 OCT 200930 JUL 2009D. DELA

4、RM29 JUL 2009SUBVERSIONAR-003311-00.ZIPNONEINPUTFB4FB3BB2FB2FB1BB1MIX-OUT+12VLOW+VCC11111INPUT_OUTPUTMIX-OUTDSPMIX-OUTPOWER_SUPPLY-VCC+VCC+12VLOWBadboard_Mark1Board_Fiducial1Board_Fiducial1Badboard_Mark1Board_Fiducial1Board_Fiducial1AMP-VCC+VCC+12VLOWDWG NO.CAD FILE NO.SCHEMATIC DIAGRAMNOTES: UNLESS

5、 OTHERWISE SPECIFIEDOF QSC AUDIO PRODUCTS, THAT MAY NOTBE DISCLOSED, REPRODUCED OR USEDINFORMATION WHICH IS THE PROPERTYTHIS DOCUMENT CONTAINS PROPRIETARYSIZE43EFF. DATECHKREVISIONSREVDESCRIPTION4321WITHOUT EXPRESS WRITTEN CONSENT FROMCONTRACT NO.21DATEPLOT DATE:ISSUEDCSCALE00PW4CAGE CODEAPPROVALSSE

6、ED FILE NO.CHECKEDDRAWNCOSTA MESA, CALIFORNIAAUDIO PRODUCTS, LLC.Troubleshoot notes: Rev A, (Revised date: July 22th, 2011)A. General Notes. a. AC voltage thresholds: operate at above 70 V and shutdown at below 50 V. b c. Firmwares (FW): four revisions as follow: f. Service Bulletin: 1. Service bull

7、etin #KSE0001revA, Issue date: Oct 2009, Title: K Series inductor reinforcement. L13 g. Troubleshoot hints: 1. Power supply failures: - No blown MOSFETs Q13 & Q14. Check for broken/cracked lead of inductors L11, L12, L13. . Idle current: 120V and 230V 0.2A; short limit current: less than 1A per CH 1

8、. FW Rev A - Initial release. 2. FW Rev B - Increased turn on mute time to avoid signal passing when the system powers off with certain AC input situations. 3. FW Rev C - Increased the fan turn on voltage because some fans wouldnt come on at the initial startup voltage. 4. FW Rev D - Adjusted fan th

9、resholds to accommodate hardware changes and modified limiters based on amplifier updates. Notes: FW Rev D IS NOT compatible with older amplifiers which have FW Rev A-C and vise versa amplifier with FW Rev D cannot be downgrade to earlier FW revisions (A-C). d. K-Series power amplifier is class D, s

10、o passive low-pass filter (Audio Precision AUX-0025) is required for all measurements - power, %THD, etc. e. Circuitry revisions. 1. ECO# 9377, Rev B, Eff. date: Jul 2009: - Change R141 and R143 2. ECO# 9457, Rev C, Eff. date: Aug 2009: - Change C13, C14, C25, R73, R77, R173, & FW rev D. Add D15, D1

11、6. Due to circuitry changes on both DSP and Power boards, new and old revisions are incompatible and require correct firmware revision. - Blown MOSFETs Q13 & Q14. Always replace both MOSFETs and diodes D33 & D34 2. Blown MOSFETS outputs of Amplification circuit: - Always replace both MOSFETs on the

12、defective channel. If the amplifier still has problem, check its driver - U5 for Q2 & 3 and U7 for Q4 & Q5.B. Top Box Power Module with DSP feature disabled. To disable DSP, pull out the GAIN B knob, use a install a shunt across pins 2 & 4 if header J7 has 10 pins (early K Series production with PCB

13、 rev A & B, till Feb 2010) or across a. Setup: * Apply a 10 mVrms, 1k Hz sinewave to only XLR input of MIC/LINE IN A; set only GAIN A control fully up; set MIC/LINE switch to LINE. * K & KW Output Adapter (SG-000576-TS): set the MODE switch to BYPASS. Do not apply any load on the HF channel if the a

14、dapter is not available to avoid overloading the HF channel. b. Output measurements: 1. Output = 1.0 Vrms; LF output and HF output are 180 degree out of phase. 2. Turn the MIC/LINE switch to MIC position. 3. Verify an increase of 24.5 dB gain (16.75 Vrms). 4. Turn both gain controls down. Disconnect

15、 the signal from LINE IN As input and feed the same signal onto either RCA input. Turn only GAIN B control fully up and verify each output (should be 2 Vrms). Repeat this step to check other RCA input. 5. Turn gain control B down. Disconnect input from RCA and then feed the signal into LINE IN Bs XL

16、R input. Change the input amplitude to 300mV. Turn GAIN B control fully up. Verify output on each channel; should be 101 W 8-ohm with 0.2% THD or 28.5 Vrms 6. Change the input amplitude to 560 mV. Verify output on each channel; should be 358 W 8-ohm with 1.0% THD or 53 Vrms. Note: red LIMIT LED turn

17、s on; it is normal. pins 4 & 6 if header J7 has 6 pinsC. Sub Box Power Module with DSP feature disabled. To disable DSP, pull out the GAIN knob, locate W2 on the right side of the gain pot, and temporarily short two pads of W2 together by soldering a piece of wire on them. a. Setup: b. Output measur

18、ements: 1. Output power in bridge (two channel outputs are combined) should be 425 W 8-ohm with 0.2% THD 3. Change the input amplitude to 800 mV. Verify output power; it should be 760 W 8-ohm with 3V/1.80V); DS = 36K (0.5V/3V)- Q3: GS = 3M (0.6V/1.7V); GD = 3M (3V/1.80V); DS = 36K (0.5V/3V)SH4: B3 &

19、 C4SH4: C4 &SH3: B4SH4: B2 & C2T106-26B 79T 18AWGON ABOUT 24VACOC = 26.1A = 0.75V+85V-85VOFF IN 30MS+7VTOTAL OPERATING CURRENT = 32MAGATE DRIVE CURRENT:(102NC + 40NC) * 200K = 29MAUCC2893 RUN CURRENT = 3MA MAXAC DETECTOR0.5*960UF*375V2 = 67.5J22AWG AUX100X40AWG LITZ SEC100X40AWG LITZ PRIEE42 3C90LIN

20、EUV = 1.27VUNIVERSAL INPUT POWER SUPPLYMMST3904MMST3904IMBD414820 PCNT1.0UF1 PCNT1.13K1 PCNT1/10WBAS211/10W1010 PCNT25V20 PCNT125VACSTW26NM60500V1 PCNT2.21K7.87KIMBD414811K1 PCNT1/8W82.5K20 PCNT1.0UF20 PCNTMOC205R2V-M1800UF5 PCNT10025V16V1000UF1.0A24V1 PCNT2W100ZR431100V5 PCNT1800UF100MMBTA421W11K1/

21、10W1 PCNT5 PCNT120PF5 PCNT200VES1D2SC2655BAT54S100V0.68UF5 PCNTBAS21FFP08S60S100V1 PCNT2.87220PF50V5 PCNT1.00K1 PCNTIMBD41481/10WBAS2120 PCNT16V1.0UFUCC289316V5 PCNT5 PCNT1W1W1W1 PCNT82.5K1 PCNT5 PCNT1 PCNT1/10W20 PCNT1/10W1 PCNT1/10W1/8W0.022UF1 PCNT10 PCNT25V0.1UF1/10W1 PCNT1/10W1 PCNT1/10W1 PCNT1

22、00K1/10W63.4K1 PCNT4MH1/8W1/8W1 PCNT243K100K6.34K1.55 PCNT1W0.047UF10 PCNT250V250V0.047UF10 PCNT1W1.556K1W0.68UF1/10W3.65K3.65K1 PCNT1/10W5 PCNTMBR23020 PCNT2W100500V5 PCNT100PF500V2W5 PCNTFFP08S60S1/10W1 PCNT6.34K100UF20 PCNT100UF150K1 PCNT0.68UF10 PCNT250VAC0.1UF1/10W17.8K1 PCNT1/8W1/8W150K1 PCNT5

23、00V10 PCNT0.022UF500V10 PCNTKBU100520 PCNT82.5K100UF100250VAC1 PCNT1 PCNT200V10 PCNT25V25V10UF20 PCNT1/10W63.4KMOC205R2V-M1 PCNT1 PCNT1/10W0.1UF25V10 PCNTMBR2300.1UF1 PCNT1/8W101/8W101 PCNTMBR2301 PCNT211/10W16V1.0UF20 PCNT16VES1D10 PCNT0.1UF25VLM78L12A20 PCNT1000UF16VIMBD41485 PCNT200V120PF1/10W1 P

24、CNT10016V20 PCNT1.0UF1 PCNT1/10WES1D1/10W1/8W1/8W20 PCNT5 PCNT10 PCNT0.68UF4MH125VACNTC10A1 PCNT243K1 PCNT2431.0A120PFES1D5 PCNT250V0.68UF200V120PFMBR23024V25VES1D1001/10W25V24V1.0ASTP11NM60FD250V0.0022UF1002.5 OHMS125VAC20 PCNT0.0022UF243400V20 PCNT470UF400V20 PCNT470UF1/10W250VAC0.1UF10020 PCNT1/1

25、0W1/10W5 PCNT100PF11K82.5K10 PCNT5 PCNT20 PCNT11K1W5 PCNT5 PCNT250V5 PCNT1.13K1 PCNTBAS21UCC28930.1UF10 PCNT25V1/10W1 PCNT768220PF10 PCNT250VAC0.0022UF29.4K11K1 PCNT0.022UF1/10W10 PCNT500V0.022UF774UHSH-003311-00AR-003311-00.ZIPNONED33D34D43D40D27D25D28D31D32D29D24D23BR1Q13Q14T1T1T3T3D35C115C118C148

26、C128C137C125C129D38D39C133C134R165R157R161R162F2F3C126C127C135C136C116C112C113C114R144R145R146R147L13L12L11C108C102C101C104C105C124R140F1J14J15R142R143R141R150R149R151R158R155C145R153C117Q11Q12D22C110C107C106R137R136R135R138R148R170R175Q15C149R171U15U15R164R133R134C111R139T2T2SG1R152R172C38W1T2T2R76

27、C52R166U6F4R8D36D37Q16C46C89U3D7C90U16U3R57R59R58R64C1C19C20R65C33R66C22R187R168C21R184R174C25D14MTG5 MTG7MTG6 MTG8MTG9R185R186C130C132R188R189QCL-DRQM-DR+VCC+12VLOWPRI_LOPRI_LOPRI_HI-VCCPSU-VSWPSU-BIASPSU-BIASQCL-DRPSU-VSW-VCCQM-DRPRI_LO12341342656127915138132105164611141356118910127213122367816751

28、-15V+15VB2B1P1A1A2P1A1VOUTVINP1S10S12S7S9S11S8-AC2AC1+P1OUTP1B6B5P3P1GNDPGNDVDDFBVREFAUXOUTCSSYNCSS_SDRSLOPERTOFFRTONRTDELLINEUVVINOUTVDD1C2B1B2A2A1B1B2A2A1P1OUTINFORMATION WHICH IS THE PROPERTYWITHOUT EXPRESS WRITTEN CONSENT FROMCSIZESCALECAGE CODEDWG NO.REV4324321100PW4CAD FILE NO.BE DISCLOSED, RE

29、PRODUCED OR USEDOF QSC AUDIO PRODUCTS, THAT MAY NOTTHIS DOCUMENT CONTAINS PROPRIETARYREGULATED, FIXED FREQUENCY 200K HZ,ACTIVE CLAMP FLY-BACK POWER SUPPLYregulatedregulatedT2: XF-000362-00U16: IC-000431-30U15: IC-000412-30Q15: QD-000105-30U6: IC-000157-30C25: CA-810009-01OLD REV: 100 UF, 16VQ16: QD-

30、000394-10D14&D29: QD-000108-30F2, F3, F4: MS-000115-30T1: XF-000360-30T2: XF-000362-00T3: XF-000361-30OLD REVISIONSR141: 3.65K; R143: 75KR141: RE-178701-30R143: RE-263401-30U15: IC-000412-30F1: MS-10.250-FUBR1: QD-000372-00Q13: QD-000376-00Q14: QD-000284-00STATIC CHECK MOSFETS Q13 & Q14 IN CIRCUIT:-

31、 Q13: GS = 1.3K (0.48V); GD = 1M/33K (OL/0.9V); DS = 1M (0.5V/OL)- Q14: GS = 1K/12K (0.124V/2V); GD = 2OK (2V); DS = 1M (0.5V/OL)RABDDDDRABC15CCDBABDQSC AUDIO PRODUCTS.REVAAPPROVED/DATESHEET 1 OFC12 OF 5CDBABCSHEETADQSC AUDIO PRODUCTS.C13 OF 5CDBABCSHEETADQSC AUDIO PRODUCTS.C14 OF 5CDBABCSHEETADQSC

32、AUDIO PRODUCTS.C15 OF 5CDBABCSHEETADQSC AUDIO PRODUCTS.TESTING MOSFET IN CIRCUIT* With DIODE-CHECK* With RESISTANCE-CHECKReferenceG - SG - DD - SS - DQ13Q140.45VOL0.42VOL 2V0.50V 2V0.125VReferenceG - SG - DD - SS - DQ13Q141.13k 1M 1M 1M 1M 1M 1M 900PC-003311-00 K-SERIES BOARD - TOP SIDE - REV. DDATE

33、: JULY 22th, 2010REV.: BSHEET 1 OF 3bluebrown100 - 260vacMS-10.250-FUAC LINE FILTERXF-000376-00XF-000376-00XF-000391-00PFC-IMPROVINGINDUCTORRE-000300-NRMAIN DC VOLTAGERECTIFIER & FILTER CAPACITORS140VDC100VAC or 340VDC230VACACTIVE-CLAMP FLYBACK SUPPLYHI-CUR. SWITCHINGQ13, Q14, XF-SEC+/-VCC (+/-85V)S

34、F-PRI, RECTIFIERS, FILTER CAPACITORS, AND C124+C52+R166 (REDUCE SECONDARY GROUND RIPPLE, EFFECTIVELY INCREASE SNR)HOUSEKEEPING VOLTAGES+15V SUPPLY-15V SUPPLYVDD1 (+7V SUPPLY)+12VLOW SUPPLYVDD (+12V PSU-BIAS)MAIN +/-85V RAIL REGULATION (U3, U6, Q15)POWER SUPPLY CONTROL CIRCUITUNDERVOLTAGEAC DETECTORS

35、TART-UP - PROVIDING CURRENTFOR CHARGING C145 THROUGH U15PWM (U15, U3, T1, T3)J2A&J2B PINOUTS1: AGND; 2: CH1; 3: CH2; 4: TEMP; 5: FRONT LED6: AMP-SD; 7: +7V; 8: PGND; 9: -15V; 10: +15V J5 PINOUTS1: 2: FAN+; FAN-J6 PINOUTS1: +5V; 2: VOL; 3: GND INPUTS & SIGNAL PROCESSINGSIG. PRE. LEDINPUT A, 2-WAYLINE

36、 IN BJ10, J11,J12, U14:A SIGNAL PRESENCELED - INPUT B2-WAY: EXT SUB/NORM/DEEPLF SWGAIN BFAN SPEED CONTROLLERREMOTEGAINGAIN A2-WAY+/-15V_DFRONT LEDSW2-WAY: HF SWVOCAL BOOST/FLATSTATUS INDICATORSRED: LIMITGREEM: STBYBLUE: POWERMIC/LINE SW2-WAYCLOCKEEPROMDSP+3.3VDLINE OUT (U17:A)(POST GAIN - MIX)PRE-EM

37、PHASIS (U17:B):10dB 5K HZLINE OUTS(POST DSP)U19:A = CH1U19:B = CH2+1.8VDLINE IN BJ8, J9,U14:B SUB: POLARITY SWNORMAL/REVERSESUB: MODE SWNORMAL/DEEPMIC LED, 2-WAYSELF-OSCILLATING CLASS-D AMPLIFIERCH2 PWM U4, F(IDLING) = 400k HzTEMP-TO-VOLT SENSOR U9CH1 PWM U2, F(IDLING) = 400k HzCH2: GATE DRIVE U5, H

38、I-CUR. SWITCHING Q2 & Q3,OUTPUT FILTER NETWORK L1 & C34CH2 HF 1ST.ORDER FILTERCH2 ZOBELNETWORKCH1 ZOBELNETWORKFRONTLEDCH1: GATE DRIVE U7, HI-CUR. SWITCHING Q4 & Q5,OUTPUT FILTER NETWORK L2 & C35PC-003311-00 K-SERIES BOARD - BOTTOM SIDE - REV. DDATE: JULY 22th, 2011REV.: BSHEET 2 OF 3CH1 SWITCHING Q4

39、: POSITIVE; Q5 NEGATIVECH2 SWITCHING Q2: POSITIVE; Q3 NEGATIVETEMP-TO-VOLT SENSOR U9: PIN1 = V+, PIN2 = VO; PIN3 = GNDRECTIFIER DIODES D33: POSITIVE; D34 NEGATIVEPSU SWITCHING Q14: MAIN SWITCHING FETQ5 ACTIVE CLAMP FETJ3 PINOUTS (2-WAY)1: CH2 OUT- (YEL); 2: CH2 OUT+ (YEL/BLK)7: CH1 OUT- (GRN); 8: CH

40、1 OUT+ (GRN/BLK)9: LED+ (WHT); 10: LED- (BLK)3, 4, 5, 6: N/CJ3 PINOUTS (SUB)1: CH2 OUT- (YEL); 3: CH2 OUT+ (YEL/BLK)7: CH1 OUT- (GRN); 8: CH1 OUT+ (GRN/BLK)9: LED+ (WHT); 10: LED- (BLK)2, 4, 5, 6: N/CPC-003311-00 K-SERIES BOARD - BOTTOM SIDE FLIP - REV. DDATE: JULY 22th, 2011REV.: BSHEET 3 OF 3CH1 S

41、WITCHING Q4: POSITIVE; Q5 NEGATIVECH2 SWITCHING Q2: POSITIVE; Q3 NEGATIVETEMP-TO-VOLT SENSOR U9: PIN1 = V+, PIN2 = VO; PIN3 = GNDRECTIFIER DIODES D33: POSITIVE; D34 NEGATIVEPSU SWITCHING Q14: MAIN SWITCHING FETQ5 ACTIVE CLAMP FETJ3 PINOUTS (2-WAY)1: CH2 OUT- (YEL); 2: CH2 OUT+ (YEL/BLK)7: CH1 OUT- (

42、GRN); 8: CH1 OUT+ (GRN/BLK)9: LED+ (WHT); 10: LED- (BLK)3, 4, 5, 6: N/CJ3 PINOUTS (SUB)1: CH2 OUT- (YEL); 3: CH2 OUT+ (YEL/BLK)7: CH1 OUT- (GRN); 8: CH1 OUT+ (GRN/BLK)9: LED+ (WHT); 10: LED- (BLK)2, 4, 5, 6: N/C.K SERIES POWER LOUDSPEAKERPARTS LISTS (JUNE 2010)Table of ContentsK-TOP PARTS LIST parts

43、 list (JUNE 2010). 2K-TOP (K8, K10, K12) PCB ASSEMBLY PARTS LIST (JUNE 2010).2K8 PARTS LIST (JUNE 2010). 4K8 POWER AMP ASSY: QSC PART # WP-003307-00. 4K8 CHASSIS ASSY: QSC PART # WP-003300-00. 5K10 PARTS LIST (JUNE 2010) . 6K10 POWER AMP ASSY: QSC PART # WP-003308-00 . 6K10 CHASSIS ASSY: QSC PART #

44、WP-003302-00. 7K12 PARTS LIST (JUNE 2010). 8K12 POWER AMP ASSY: QSC PART # WP-003309-00 . 8K12 CHASSIS ASSY: QSC PART # WP-003304-00 .9KSUB PARTS LIST (JUNE 2010). 10KSUB PCB ASSEMBLY PARTS LIST (JUNE 2010). 10KSUB POWER AMP ASSY: QSC PART # WP-003310-00. 13KSUB CHASSIS ASSY: QSC PART # WP-003306-00

45、.13KSERIES PARTS LIST - JUNE 20101QSC AUDIO PRODUCTS, LLCK-TOP PARTS LISTK-TOP (K8, K10, K12) PCB ASSEMBLY PARTS LIST (JUNE 2010)K-8: QSC PART # WP-003311-00; K-10: QSC PART # WP-003312-00; K-12: QSC PART # WP-003313-00QSC Part #DescriptionQtyReferenceCommentsCA-010002-3010PF, 5 PCNT, 50V, CERAMIC N

46、PO, 0805, 2C10, C11CA-018002-3018PF, 5 PCNT, 50V, CERAMIC NPO, SMT, 2C59, C61CA-110001-10100PF, 5 PCNT, 500V, MICA, DIPPED, 2C126, C127CA-110002-30100PF, 5 PCNT, 50V, CERAMIC NPO, 0805, 4C75, C76, C77, C78CA-112001-30120PF, 5 PCNT, 200V, CERAMIC NP0, 0805, 12C1, C19, C20, C22, C28, C29, C30, C31, C5

47、8, C60, C8, C9CA-122002-30220PF, 5 PCNT, 50V, CERAMIC NPO, 0805, 7C117, C49, C51, C93, C94, C95, C96CA-122011-00220PF, 10 PCNT, 250VAC, CERAMIC CLASS Y1, DISC, YCAP1C52CA-168003-30680PF, 5 PCNT, 50V, CERAMIC NPO, 0805, 2C72, C73CA-222001-000.0022UF, 20 PCNT, 125VAC, CERAMIC Y5U, DISC, YCAP3C104, C10

48、5, C124CA-233003-300.0033UF, 10 PCNT, 50V, CERAMIC X7R, 0805, 2C122, C50CA-239002-300.0039UF, 5 PCNT, 50V, CERAMIC C0G/NP0, 0805, 2C6, C7CA-322013-300.022UF, 10 PCNT, 500V, CERAMIC X7R, 1206, 6C111, C114, C130, C132, C53, C57CA-347008-100.047UF, 10 PCNT, 250V, FILM, BOX, 5C2, C32, C36, C46, C89CA-36

49、8007-300.068UF, 10 PCNT, 100V, CERAMIC X7R, 0805, 1C55CA-410001-000.1UF, 20 PCNT, 250VAC, FILM, BOX STYLE, XCAP1C108CA-410012-300.1UF, 10 PCNT, 25V, CERAMIC X7R, 0805, 33C100, C106, C107, C118, C12, C120, C121, C138, C21, C26, C27, C3, C33, C39, C41, C47, C5, C63, C64, C68, C69, C70, C71, C74, C82,

50、C83, C84, C85, C86, C90, C91, C92, C99CA-410027-100.1UF, 5 PCNT, 100V, FILM, BOX STYLE, 3C109, C119, C131CA-468005-100.68UF, 5 PCNT, 100V, FILM, DIPPED/BOX, 3C125, C34, C35CA-468006-000.68UF, 5 PCNT, 250V, METALLIZED FILM, BOX, 3C116, C149, C4CA-468007-000.68UF, 20 PCNT, 250VAC, FILM, BOX STYLE, X2