QSC_PL_1.4_Schematics 电路图.pdf

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1、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-

2、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 3K-5W R539 .001 C503 -15VIC CH1 D509 IN4

3、744A-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

4、 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 C50

5、4 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 R

6、N503:1 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

7、 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 3K-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

8、- 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 .

9、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

10、 PWR GND CH1 A P 3.3-1W R543 1N4148 D557 (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 VOL

11、TAGE 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 TY

12、PES. 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 D5

13、32, 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) -FA

14、N +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 -T70

15、4-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

16、 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 SH-000157-00 SH-000157-00 MAIN PCB, POWERLIGHT 1.4 SCHEMATIC, MAIN PCB, POWERLIG

17、HT 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) +80V RAIL 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 D C B A

18、 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,

19、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

20、PARTS LIST NEXT ASSYUSED ON APPLICATION ITEM NO.QTYPART NO.DESCRIPTIONVENDOR DESCRIPTIONREVZONE DATEAPPROVED REVISIONS D611 4.7V 10K-2W R658 3K-2W R610 U602 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 P

21、OWER U601 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 .1 C636 .1 C637 A A D630 1N4004 RN604:1 1K 12 RN604:3 1K 5 6 RN604:4 1K 7 8 A PTC-60C R656 R649 330K A +V TP11TP

22、12TP13 R615 .22-3W R614R613 J602:8 TP10TP9TP8 .22-3W R621R620R619 J602:6 13 7 9 11 12 10 14 3 2 -15V +15V A C631 .01 U603:A 5532 + 3 - 2 1 C632 4.7NP-16V P PP P A 2.2K RN603:4 87 3K-5W R639 330-25V C626 D620 1N4934 C624 .022 4.7V D614 R622 1K RN602:4 10K 78 C621 47pF R638 21.0K-.5W 4.7K R640 A C620

23、47NP-10V R641 332 C618 .10-5% 75K R642 R644 47 C628 10pF RN603:1 2.2K 12 RN603:2 2.2K 34 A 220pF C627 D605 1N4934 C608 .01 D606 1N4934 2.2K RN603:3 65 C623 .0022-5% D621 IN4744A-15V J602:2 D619 1N4934 D610 IN4744A-15V .001 C606 R607 12K VR601 100 C W 50 OHM R611 1K R612 .001 C603 D609 IN4744A-15V J6

24、02:4 RN602:3 10K 56 330-25V C625 D622 IN4744A-15V J602:1 2K VR603 C W 2K VR602 C W 1N4934 D607 1N4934 D608 +48V D613 1N5402 1N5402 D612 2SA1306B Q601 2SC3298B Q602 Q610Q609Q608 Q607Q606Q605 .10-5% C614 L601 2uH R625 5.6-2W R627 10-2W R623 10-2W R626 10-2W R624 10-2W .10-5% C613 C604 47-50V Q604 G S

25、D 22-1W R605 .1-250V C605 2.7-2W R608 MUR810 D602 C607 470-16V MUR810 D601 R606 22-1W Q603 D S G C601 .1-250V R604 2.7-2W +15VIC CH2 -15VIC CH2 3K-5W R646 Q615 2N4410 3.9K R657 A A C663X C664X J604 1 2 J605 1 2 1A-200V BR601 + 1 AC2 4 AC1 3 - 2 220NP-10V C629 18pF C619 953 R668 1 R660 7.5K-2W A 10K

26、RN602:2 43 47pF C622 10K RN602:1 21 R645 1K 8 U603:B 5532 4 8 + 5 - 6 7 +15VIC CH2 -15VIC CH2 R647 56.2-1%-1/8W 5 R603 12K P 1N4148 D625 1N4004 D626 R601 3.3-1W R602 3.3-1W R609 22K-1W R617 22-1W R618 22-1W 536 R661 3.3-1W R643AP SG3 PWR GND CH2 E3 1N4148 D657 450-5W R648 +80V RAIL 10 (TO SHEET 3) N

27、/C ! 3 PL 3 PL SIG. GND OUTPUT CH2 2 .FILENAME 2 OF 3 BIAS SIG. GND GAIN GROUND 200V BIAS NETWORK 25 C HEATSINK GROUND HEATSINK GROUND ! 3 PL 2SA1302 3 PL 2SC3281 ! AUDIO OUTPUT STAGE ! ! ! ! ! ! +48V RAIL HEATSINK GROUND SPEAKER SPEAKER COMMON CH2 J603 PLOT DATE: .DATE 10 TRANSFORMER TO SHEET 3 TO

28、SHEET 3 (TO SHEET 3) HS GND CH2 +I LIM -I LIM E4W2 HEATSINK SH-000157-00 SH-000157-00 +40 +80V SWITCHED BUS -40 -80V SWITCHED BUS 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 INFO

29、RMATION 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 I

30、NCHES. 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 TP4 .1 C780 470-63V C777 470-63V C776

31、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

32、.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

33、.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

34、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 D7

35、03: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

36、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 1N41

37、48 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

38、-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

39、-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 C7

40、38 6uH L710 6uH L709 T702:3 S9 S10 -15V +V+15V 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 CO

41、NNECTED SH-000157-00 SH-000157-00 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 FI

42、LE 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 + - A

43、NGLES O DECIMALS + - .XXX DO NOT SCALE DRAWING PARTS LIST NEXT ASSYUSED ON APPLICATION ITEM NO.QTYPART NO.DESCRIPTIONVENDOR DESCRIPTIONREVZONE DATEAPPROVED REVISIONS 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

44、, 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 9876

45、54321 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 AR

46、E 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

47、 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

48、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

49、,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. ISSUED CHECKED CONTRACT NO. DRAWN APPROVALS MATERIAL FINISH UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES. DIMENSIONS PER ANSI Y14.5-1982 TOLERANCES