QSC-PL1.8-pwr-sch维修电路原理图.pdf

RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 E1 10K-2W R558 3K-2W R510 R518 22-1W R517 22-1W R509 22K-1W U502 IC-000009-00 T7 T6 T5 T 4 T 1 T 3 T 2 SOURCE REF GATE SHUTDOWN LOSS-OF-SAT GATE DRIVER COMPARATOR SCHMIDTT ! SLEWSHUTDOWNLOW RAILREF VOLTGATE POWER U501 IC-000008-00 T8 T7 T9 T 5 T 6 T 4 T 2 T 1 T 3 ! GATE SOURCE REF HIGH RAIL NEG SUPP SHUTDOWN LOSS-OF-SAT GATE DRIVER SCHMIDTT COMPARATOR BOOTSTRAP CAPSLEWSHUTDOWNLOW RAILREF VOLT R548 450-5W +15VIC CH1 .1 C537 .1 C536 A D5541N4004 D535 1N4004 D530 1N4004 J502:1 A 7 13 A 3.5K-5W R539 .001 C503 -15VIC CH1 D509 IN4744A-15V R503 12K P A 2.2K R553 R562 2.2K R551 390K R555 390K -15V A 100-35V C534 100K R552 MPSW51 Q521 1N4004 D635 1N4004 D636 MPSW01 Q514 +15VIC CH1 +15VIC CH2 -15VIC CH1 -15VIC CH2 A Q517 MJE15030 C530 47-50V +15V -15V J53:2 2 J53:1 1 D532 7.5V 10K R550 390K R566 MPS8599 Q512 68K R554 Q516 2N4410 22K RN505:2 4 3 RN505:4 22K 7 8 MPS8599 Q519 RN505:1 22K 1 2 22K RN505:3 65 4.7K RN506:4 8 7 GREEN LD704 RN506:1 4.7K 1 2 1K R564 RN506:2 4.7K 3 4 R530 270 R531 1.62K D533 1N4746 MPS8599 Q520 10K R563 Q515 2N4410 4.7K RN506:3 6 5 D502 MUR810 R508 2.7-2W C505 .1-250V R505 22-1W Q504 D S G 47-50V C504 4 1 8 9 11 12 10 14 C532 4.7NP-16V P PP C564X C563X C501 .1-250V R504 2.7-2W J502:4 R511 50 OHM 100 VR501 C W 12K R507 C506 .001 IN4744A-15V D510 1N4934 D519 J502:2 IN4744A-15V D521 .0022-5% C523 R547 56.2-1%-1/8w RN503:3 2.2K 56 1N4934 D506 .01 C508 1N4934 D505 C527 220pF A 2.2K RN503:2 43 2.2K RN503:1 21 10pF C528 47 R544 R542 75K .10-5% C518 332 R541 47NP-10V C520 A R540 4.7K 21.0K-.5W R538 47pF C521 10K RN502:4 87 1K R522 D514 4.7V .022 C524 1N4934 D520 C526 330-25V RN503:4 2.2K 78 10K RN502:3 65 +15VIC CH1 2K VR502 C W 1N4934 D507 2K VR503 C W 1N4934 D508D513 1N5402 1N5402 D512 2SA1306B Q501 2SC3298B Q502 Q510Q509Q508 Q507Q506Q505 .10-5% C514 L501 2uH R525 5.6-2W R527 10-2W R523 10-2W R526 10-2W R524 10-2W .10-5% C513 C507 470-16V MUR810 D501 R506 22-1W Q503 D S G R546 3.5K-5W J504 1 2 J505 1 2 RN502:2 10K 34 RN502:1 10K 12 C522 47pF R545 1K 5532 U503:B7 + 5 8 4 - 6 U503:A 5532 + 3 - 2 1 C519 18pF R568 953 A R560 7.5K-2W -15VIC CH1 2 3 +15V -15V R528 15-1/2W R529 15-1/2W J502:6 R519R520 .22-3W R521 TP16TP15TP14 J502:8 R513R514R515 .22-3W TP19TP18TP17 +V RN504:1 1K 12 RN504:3 1K 5 6 RN504:4 1K 7 8 A PTC-60C R556 R549 330K A 2N4410 Q511 Q513 MPS8599 R567 4.7K R559 47K R569 47K .1 C566 5 A C529 220NP-10V A .01 C531 A A R557 3.9K 2N4410 Q518 1A-200V BR501 + 1 AC2 4 AC1 3 - 2 330-25V C525 P IN4744A-15V D522 1N4004 D524 1N4148 D525 1N4004 D526 1N4148 D531 A R501 3.3-1W R502 3.3-1W 4.7-16V C535 536 R561 1N4148 D555 1N4148 D556 1K R512 D511 4.7V SW SG1 HS GND CH1 1 SW. GND 2 SG2 PWR GND CH1 A P 3.3-1W R543 1N4148 D557 SH-000152-00 SH-000152-00 MAIN PCB, POWERLIGHT 1.8 (EFF. 6-30-95) AC SGM1-25-95 REVISED PER ECO 2601 AC B -40 -80V SWITCHED BUS +40 +80V SWITCHED BUS 2/1/95G. IRWIN 1. THIS DRAWING USED IN CONJUNCTION WITH PCB ASSEMBLY WP-000157-XX. 12. TO-220 DIODES D703, D704, D713 AND D714 ARE SELECTED FOR PEAK REVERSE VOLTAGE GREATER THAN 250V. D748 -I LIM +I LIM (TO SHEET 3) (TO SHEET 3) (TO SHEET 2) (TO SHEET 3) TO SHEET 3 TO SHEET 3 C637C537 COMMON 125W, 60V MINIMUM, ON-RESISTANCE 0.030 OHMS MAX. ! RISING AT 55C. QSC P/N RE-000006-VP. RESISTORS MOUNTED TO HEAT SINK. RESISTANCE 100 OHM COLD, TYPES, 10% ON OTHER TYPES. 2. CH2 IS IDENTICAL TO CH1, EXCEPT PART NUMBER SEQUENCE R601, 602 ETC. 3. ALL RESISTORS ARE 1/4-WATT, 5%. 4. ALL CAPACITORS 100V. TOLERANCE 20% FOR ELECTROLYTIC 5. R556, 656 AND 739 ARE POSITIVE TEMPERATURE COEFFICIENT 6. Q503, 504, 603, 604 ARE SWITCHING FETS, QSC P/N QD-000031-QD, 7. ZENER D532, MARKED 7.5V, LOW LEAKAGE, QSC P/N QD-0007.5-ZT. 8. BRIDGE RECTIFIERS BR501, 601 AND 702 ARE 1A, 200V. 9. PARTS MARKED WITH TRIANGLE MUST BE REPLACED WITH EXACT TYPE ONLY. 1 .FILENAME A. CERRILLO8/27/93 1 OF 3 SCHEMATIC DIAGRAM, NOTES: UNLESS OTHERWISE SPECIFIED SIG. GND SIG. GND (TO SHEET 3) -FAN +FAN ! +48V RAIL HEATSINK GROUND 25 C BIAS NETWORK 200V GAIN GROUND BIAS HEATSINK GROUND HEATSINK GROUND ! 3 PL 2SA1302 AUDIO OUTPUT STAGE ! ! ! ! ! SPEAKER SPEAKER COMMON CH1 OUTPUT CH1 -18V 3 PL 3 PL ! PROTECT J503 3 PL 2SC3281 ! REFERENCE DESIGNATION HIGHEST NO. USED - -U711 TP19-TESTPOINT -T704-TRANSFORMER VR603VR503POTENTIOMETER U603U503IC -RN704RN604RN506 -R751R668R569 -Q706Q615Q521 -LD704- -L710 J708J53 - - -BR702 PS BR601BR501 CH2CH1DESCRIPTION J503J603 BRIDGE RECTIFIER CAPACITOR DIODE L501L601 RES NETWORK RESISTOR TRANSISTOR LED INDUCTOR CONNECTOR PLOT DATE: .DATE PCB IN TANGOPRO 10 10 TRANSFORMER HAVE VOLTAGES GREATER THAN 42V. 11. PARTS ENCLOSED WITHIN DOTTED OUTLINE 10. CAPACITORS C563X, 564X, 663X AND 664X ARE SPARES. (SHEET 1 ZONE C2) (SHEET 1 ZONE A5) D557D657 C785 HS GND CH1 E2W1 HEATSINK A SCHEMATIC, MAIN PCB, POWERLIGHT 1.4 PROD RELEASE PER ECO 2548 (EFF. 1-27-95) AC FOR FAB SEE PC-000152-00 REV A WP-000157-00 WP-000157-01 PWRL 1.4 (120/230V) PWRL 1.4 (100V) C REVISED PER ECO 2755 AC (EFF. 3-1-95) AC SGM3-1-95 DOC NO. SH-000157-00 REV C C1 (EFF. 9-27-96) AA OBSOLETE PER ECO 3244 SA7-21-95 C1 C1 +96V RAIL D C B A D C B A 87654321 87654321 QSC AUDIO PRODUCTS. WITHOUT EXPRESS WRITTEN CONSENT FROM BE DISCLOSED, REPRODUCED OR USED OF QSC AUDIO PRODUCTS, THAT MAY NOT INFORMATION WHICH IS THE PROPERTY THIS DOCUMENT CONTAINS PROPRIETARY SIZEFSCM NO.DWG NO. SCALECAD FILE NO.SHEET REV D DWG NO.SHREV AUDIO PRODUCTS, INC. COSTA MESA, CALIFORNIA DATE CAD SEED FILE NO. ISSUED CHECKED CONTRACT NO. DRAWN APPROVALS MATERIAL FINISH UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. DIMENSIONS PER ANSI Y14.5-1982 TOLERANCES ARE: DECIMALS DEBURR EDGES .XXX R MAX .XX + - ANGLES O DECIMALS + - .XXX DO NOT SCALE DRAWING PARTS LIST NEXT ASSYUSED ON APPLICATION ITEM NO.QTYPART NO.DESCRIPTIONVENDOR DESCRIPTIONREVZONE DATEAPPROVED REVISIONS RadioFans.CN 收音机爱 好者资料库 R648 450-5W D657 1N4148 E3 SG3 PWR GND CH2 PAR643 3.3-1W R661 536 22-1W R618 22-1W R617 22K-1W R609 3.3-1W R602 3.3-1W R601 D626 1N4004 D625 1N4148 P 12K R603 5 56.2-1%-1/8W R647 -15VIC CH2 +15VIC CH2 5532 U603:B7 - 6 + 5 8 4 8 1K R645 RN602:1 10K 12 C622 47pF RN602:2 10K 34 A 7.5K-2W R660 1 R668 953 C619 18pF C629 220NP-10V BR601 1A-200V - 2 AC1 3 AC2 4 + 1 J605 2 1 J604 2 1 C664X C663X A A R657 3.9K 2N4410 Q615 R646 3.5K-5W -15VIC CH2 +15VIC CH2 2.7-2W R604 .1-250V C601 Q603 G S D 22-1W R606 D601 MUR810 470-16V C607 D602 MUR810 R608 2.7-2W C605 .1-250V R605 22-1W Q604 D S G 47-50V C604 C613 .10-5% 10-2W R624 10-2W R626 10-2W R623 10-2W R627 5.6-2W R625 2uHL601 C614 .10-5% Q605Q606Q607 Q608Q609Q610 Q602 2SC3298B Q601 2SA1306B D612 1N5402 1N5402 D613 +48V D608 1N4934 D607 1N4934 VR602 2K C W VR603 2K C W J602:1 IN4744A-15V D622 C625 330-25V 10K RN602:3 65 J602:4 IN4744A-15V D609 C603 .001 R612 1K R611 50 OHM 100 VR601 C W 12K R607 C606 .001 IN4744A-15V D610 1N4934 D619 J602:2 IN4744A-15V D621 .0022-5% C623 RN603:3 2.2K 56 1N4934 D606 .01 C608 1N4934 D605 C627 220pF A 2.2K RN603:2 43 2.2K RN603:1 21 10pF C628 47 R644 R642 75K .10-5% C618 332 R641 47NP-10V C620 A R640 4.7K 21.0K-.5W R638 47pF C621 10K RN602:4 87 1K R622 D614 4.7V .022 C624 1N4934 D620 C626 330-25V R639 3.5K-5W RN603:4 2.2K 78 A P PP P 4.7NP-16V C632 5532 U603:A 1 - 2 + 3 .01 C631 A +15V -15V 2 3 14 10 12 11 9 7 13 J602:6 R619R620R621 .22-3W TP8TP9TP10 J602:8 R613R614 .22-3W R615 TP13TP12TP11 +V A 330K R649 R656 PTC-60C A 1K RN604:4 8 7 1K RN604:3 6 5 1K RN604:1 21 1N4004 D630 A A C637 .1 C636 .1 IC-000008-00 U601 T 3 T 1 T 2 T 4 T 6 T 5 T9 T7 T8 REF VOLTLOW RAILSHUTDOWNSLEWBOOTSTRAP CAP SCHMIDTT COMPARATOR GATE DRIVER LOSS-OF-SAT SHUTDOWN NEG SUPP HIGH RAIL SOURCE REF GATE ! IC-000009-00 U602 T 2 T 3 T 1 T 4 T5 T6 T7 GATE POWERREF VOLTLOW RAILSHUTDOWNSLEW ! SCHMIDTT COMPARATOR GATE DRIVER LOSS-OF-SAT SHUTDOWN GATE SOURCE REF R610 3K-2W R658 10K-2W 4.7V D611 C1 C1 -40 -80V SWITCHED BUS +40 +80V SWITCHED BUS HEATSINK W2E4 -I LIM +I LIM HS GND CH2 (TO SHEET 3) TO SHEET 3 TO SHEET 3 TRANSFORMER 10 .DATE PLOT DATE: J603 SPEAKER COMMON CH2 SPEAKER GROUND HEATSINK +48V RAIL ! ! ! ! ! ! AUDIO OUTPUT STAGE ! 2SC3281 3 PL 2SA1302 3 PL ! GROUND HEATSINK GROUND HEATSINK 25 C BIAS NETWORK 200V GAIN GROUND SIG. GND BIAS 2 OF 3 .FILENAME 2 OUTPUT CH2 SIG. GND 3 PL 3 PL ! N/C (TO SHEET 3) 10 +96V RAIL SH-000152-00 SH-000152-00 D C B A D C B A 87654321 87654321 QSC AUDIO PRODUCTS. WITHOUT EXPRESS WRITTEN CONSENT FROM BE DISCLOSED, REPRODUCED OR USED OF QSC AUDIO PRODUCTS, THAT MAY NOT INFORMATION WHICH IS THE PROPERTY THIS DOCUMENT CONTAINS PROPRIETARY SIZEFSCM NO.DWG NO. SCALECAD FILE NO.SHEET REV D DWG NO.SHREV AUDIO PRODUCTS, INC. COSTA MESA, CALIFORNIA DATE CAD SEED FILE NO. ISSUED CHECKED CONTRACT NO. DRAWN APPROVALS MATERIAL FINISH UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. DIMENSIONS PER ANSI Y14.5-1982 TOLERANCES ARE: DECIMALS DEBURR EDGES .XXX R MAX .XX + - ANGLES O DECIMALS + - .XXX DO NOT SCALE DRAWING PARTS LIST NEXT ASSYUSED ON APPLICATION ITEM NO.QTYPART NO.DESCRIPTIONVENDOR DESCRIPTIONREVZONE DATEAPPROVED REVISIONS RadioFans.CN 收音机爱 好者资料库 TP4 .1 C780 470-63V C777 470-63V C776 470-63V C775 470-63V C774 470-63V C772 470-63V C770 470-63V C769 470-63V C768 470-63V C734 470-63V C731 470-63V C722 470-63V C720 470-63V C715 470-63V C713 470-63V C703 470-63V C701 SWSW SW +12V +V +V .1 C717 1A-200V BR702 + 1 A C 2 4 A C 1 3 - 2 SW 4 3 2 1 TP1 TP7 TP6 TP5 TP3 TP2 C702 .1-250V C704 .1-250V C714 .1-250V C716 .1-250V C721 .1-250V C723 .1-250V C732 .1-250V C735 .1-250V L701 6uH 6uH L703 6uH L704 L708 6uH L707 6uH 6uH L705 L706 6uH L702 6uH SW P7 P7 10K R750 1N4148 D746 .1 C759 +VREF 74HC4024 U704 7 1 4 RESET 2 1 Q7 3 Q6 4 Q5 5 Q4 6 Q3 9 Q2 11 Q1 12 +VREF SW 7.3728MHZ U701 78 141 .01 C761 SW T702:1 P5 P4 P2 P1 C771 .47-400V .47-400V C773 T704:1 P1P2 D710 1N4148 MUR440 D741 IRGPC50U Q702 C G E R719 5.6 R722 10K T704:2 S1 S2 T702:5 S16 S17 S18 S19 S20 T702:4 S12 S13 S14 S15 S11 RN701:4 10K 78 10K R737 2.2K RN702:4 87 RN702:1 2.2K 1 2 10K RN701:1 2 1 10K RN701:2 43 10K RN701:3 6 5 SW SW SW +VREF RN702:3 2.2K 56 Q706 MPS8599 D743 1N4746 C763 470pf 1N4148 D742 470 R745 SW SW C745 .01 1.0 CER C746 SW 1 R746 10uF-35V C747 .01 C748 D714:B D714:A SF166C D713:A SF166A D713:BD711:B SF164A D711:A SF164C D712:A D712:B D701:B SF164A D701:A SF164C D702:A D702:BD704:B D704:A SF166C D703:A SF166A D703:B 10V D732 R739 PTC-60C 1N4148 D734 U710 SG3525AN GND 12 VC 13 VIN 15 OUTB 14 OUTA 11 SHTDWN 10 COMP 9 SFT-SRT 8 DISCHG 7 RT 6 CT 5 OSC.OUT 4 SYNC 3 +IN 2 -IN 1 VREF 16 C754 .01 10K R709 5.6 R708 T701:2 S4 S3 C749 1.0 CER T701:1 P2 P1 +VREF +VREF 1.0 CER C737 10uF-35V C736 100 R729 R730 7.15K-1% C753 .001-5% 2200-200V C708 C707 2200-200V 40A-400V BR701 A C 2 3 - 4 + 1 A C 1 2 U711:A LM393NE 4 1 8 + 3 - 2 SW SW SW 220pf C757 R732 5.6 220pf C756 R733 120K R734 47K 10uF-35V C755 1N4148 D728 1N4148 D730 U711:B LM393NE 7 + 5 - 6 390K R735 270 R736 1N4148 D733 SW Q705 2N4410 SW 1N4148 D727 C758 10uF-35V 1N4148 D731 SW SW U709 TC1427CPA IN_A 2 GND 3 VDD 6 NC 1 IN_B 4 NC 8 OUT_A 7 OUT_B 5 R740 1K 15-1/2W R741 SW 1N4934 D738 1N4934 D737 1N4934 D739 1N4934 D7351K RN704:4 8 7 R738 27K 1K RN704:3 6 5 1K RN704:2 43 R731 2.2K SW +VREF+VREF C706 100pF-500V 220-1W R703 R712 220-1W 100pF-500V C712 +12V R706 15 330pF-500V C764 Q701 IRGPC50U E G C D740 MUR440 1N4148 D705 2-200V C728 2200-200V C727 C726 2200-200V R705 15 T701:3 S5 S6 330pF-500V C765 2-200V C709 68K-1W R743 68K-1W R744 J708 1 2 J705 1 2 J704 1 2 SW +15V 5 4 3 2 1 .1 C760 .1 C779 +VREF 2.2K RN702:2 4 3 +VREF SWSWSW .047-400V C781 .047-400V C782 .047-400V C783 .047-400V C784 1N4004 D723 1N4004 D747 C705 330-25V C718 330-25V 1N4004 D729 1N4746 D726 1K R748 +V SW .1 C766 2N4410 Q704 MPS8599 Q703 SW R751 10K R749 10K R747 2.2K +V .1 C778 SW D748 1N4004 SW MUR440 D722 MUR440 D720 .1 C743 .1 C739 330-25V C742 330-25V C738 6uH L710 6uH L709 T702:3 S9 S10 -15V +V+15V SH-000152-00 SH-000152-00 FROM SHEET 2 FROM SHEET 1 (FROM SHEET 1) KEEP ALIVE SUPPLY REMOTE STAND BY J703 (FROM SHEET 1 AND 2) (FROM SHEET 1 AND 2) (FROM SHEET 1) 3 3 OF 3 TRANSFORMER TRANSFORMER ! = 5.1V (SOURCE FOR CIRCUIT) .FILENAME N/C J706 PLOT DATE: .DATE ACTIVE PRIMARY CONNECTED C1 C1 D C B A D C B A 87654321 87654321 QSC AUDIO PRODUCTS. WITHOUT EXPRESS WRITTEN CONSENT FROM BE DISCLOSED, REPRODUCED OR USED OF QSC AUDIO PRODUCTS, THAT MAY NOT INFORMATION WHICH IS THE PROPERTY THIS DOCUMENT CONTAINS PROPRIETARY SIZEFSCM NO.DWG NO. SCALECAD FILE NO.SHEET REV D DWG NO.SHREV AUDIO PRODUCTS, INC. COSTA MESA, CALIFORNIA DATE CAD SEED FILE NO. ISSUED CHECKED CONTRACT NO. DRAWN APPROVALS MATERIAL FINISH UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. DIMENSIONS PER ANSI Y14.5-1982 TOLERANCES ARE: DECIMALS DEBURR EDGES .XXX R MAX .XX + - ANGLES O DECIMALS + - .XXX DO NOT SCALE DRAWING PARTS LIST NEXT ASSYUSED ON APPLICATION ITEM NO.QTYPART NO.DESCRIPTIONVENDOR DESCRIPTIONREVZONE DATEAPPROVED REVISIONS RadioFans.CN 收音机爱 好者资料库 A .22 C203 .22 C103 7 14 13 12 11 10 9 8 6 5 4 3 2 1 3 8 9 9 7 8 A A R205 10K A R206 649 -20dB YEL LD202 -20dB YEL LD102 R102 3.57K 10, 35V C101 390K R104 BR202 43 - 2 + 1 BR102 43 - 2 + 1 10 12VR201 10K W C W 10 11 A 1 1 14 VR101 10K W C W 12 7 SW SW 1 2 3 4 5 1K R10810K R110 R111 1K 4.7K R112 270 R113 2N4410 Q101 R109 1K Q102 2N4410 LD108 RED YEL LD109 R114 1K GRN LD107 C201 10, 35V 3.57K R202 100 R201 390K R204 U201 BA6124 987654321 LD201 GRN LD203 -10dB YEL A AAA 100 R101 649 R106 U101 BA6124 51 2 3 46 7 8 9 LD101 GRN LD103 -10dB YEL 10K R105 13 LD106 CLIP-RED A A LD206 CLIP-RED 14 13 11 4.7 C102 4.7 C202 A C104 .1 SW PROD REL, ECO 2546, BRL 1. ALL CAPACITORS VALUES ARE IN MICROFARADS, 25V MIN. 2. ALL RESISTORS VALUES ARE IN OHMS +/-5%, 1/4 W. 1%1% 1% 5% DISPLAY BOARD, POWERLIGHT SH0153A1.S01 A A A INCORP ENG DESIGN CHANGES DOC NO. SH-000153-00 REV A FOR PC-000153-00 REV A CH2 SIGNAL GND - IN CH2 + IN CH2 + IN CH1 - IN CH1 SIGNAL GND SPKR CH1 J1 J1 CHANNEL 2 J201 CHANNEL 1 J101 7/11/94B. LILLEMOEN NOT USEDLAST USED REFERENCE DESIGNATION 7. LD101, LD201, LD102, LD202, HIGH-EFFICIENCY GREEN LED. 6. LD103, LD203, LD104, LD204, HIGH-EFFICIENCY RED LED. 5. PARTS IN COMMON TO BOTH CHANNELS NUMBERED 1-99. 4. CH 2 COMPONENTS NUMBERED 201-299. 3. CH 1 COMPONENTS NUMBERED 101-199. UNLESS OTHERWISE SPECIFIEDNOTES: 1 OF 1 AMPLIFIER STATUS BOARD N/C J102 SIGNAL PRESENTSIGNAL PRESENT AC1AC2 AC1AC2 SH-000153-00 NONE SH-000153-00 SCHEMATIC DIAGRAM, SIGNAL GND SIGNAL GND 38-1-94INCORP ENG DESIGN CHANGES 49-29-94 16NP 16NP BR102,202BR101,201 C104,203 J1,102,201 LD109,206 Q102 R114,206R103,107,203 U101,201 VR101,201 LD104,105,204,205 1% 5% 1% 1%1% SCHEMATIC DIAGRAM, DISPLAY BOARD, POWERLIGHT D C B A D C B A 87654321 87654321 QSC AUDIO PRODUCTS. WITHOUT EXPRESS WRITTEN CONSENT FROM BE DISCLOSED, REPRODUCED OR USED OF QSC AUDIO PRODUCTS, THAT MAY NOT INFORMATION WHICH IS THE PROPERTY THIS DOCUMENT CONTAINS PROPRIETARY SIZEFSCM NO.DWG NO. SCALECAD FILE NO.SHEET REV D DWG NO.SHREV AUDIO PRODUCTS, INC. COSTA MESA, CALIFORNIA DATE CAD SEED FILE NO. ISSU