Mackie-SRM150-spk-sch 电路图 维修手册.pdf

《Mackie-SRM150-spk-sch 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Mackie-SRM150-spk-sch 电路图 维修手册.pdf（25页珍藏版）》请在收音机爱好者资料库上搜索。

1、 SRM1502007 LOUD Technologies Inc. All rights re servedBack PCB Assembly (Layout and Schematics)PAGE 1 TOP ARTWORK BOTTOM VIEW BOTTOM ARTWORK THRU A THRU B MAIN IN A GND MAIN IN B J3 SW1 PAD J2 J1 C4 C1 C5 R4 C3 C6 R5 R1 R2 C2 L1 L3 L5 L2 L4 L6 R3 Plot Time: REV 100 300 06/06/06 04/18/06 10/02/06 Sh

2、eet Class Code: 1of NONE WFB WFB WFB Appvd byDate Drawn: 200 WFB NOTES: Checked: Released: Tolerance: Drawing Size: Drawing Type:08:24:32 Signatures: DateDESCRIPTION Drawing Number: 1 Drawing Title: A ASSEMBLY First Used On: Date: Ecr(s)/Ecn(s)Chgd By I/O BOARD Mon Oct 02, 2006 1/26/06 ST. LOUIS MUS

3、IC, INC 15851PWA Plot Date: THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO INITIAL SAMPLE RE-WIRE PAD SW, ADD R4,5 1901 Congressional, St. Louis, MO 63146 SECOND SAMPLE/ADDED PAD SW 1. APPLY RTV SILICONE SEALANT PER SLM DOCUMENT NUMBER 00A005-00 CAUTION: THIS ASSEMBLY DRAWING IS PROVIDE

4、D FOR USE BY QUALIFIED PERSONNEL. TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. RadioFans.CN 收音机爱 好者资料库 SRM1502007 LOUD Technologies Inc. All rights re servedBack PCB Assembly (Layout

5、 and Schematics)PAGE 2 RadioFans.CN 收音机爱 好者资料库 SRM1502007 LOUD Technologies Inc. All rights re servedFilter PCB Assembly (Top and Schematics)PAGE 1 RadioFans.CN 收音机爱 好者资料库 SRM1502007 LOUD Technologies Inc. All rights re servedFilter PCB Assembly (Top and Schematics)PAGE 2 2007 LOUD TECHNOLOGIES INC.

6、 1 B00 SCH0020719-00 SCHEMATIC, SWEETSPOT FILTER 16220 WOOD-RED RD NE WOODINVILLE, WA 98072 Technologies Inc. 2 D C B A REV. OF 1 1 SHEET DWG. NO. SCALE: NONE 2 DWG FILE: SIZE D ISSUED: MFG ENG: MFG: MATERIAL: NP ENG: CHECKED: DRAWN: DATEAPPROVALS 3 PROPERTY OF LOUD TECHNOLOGIES INC. IS PROPRIETARY

7、AND CONFIDENTIAL THE INFORMATION CONTAINED HEREIN ALL RIGHTS RESERVED C 45 678 A B C D 876 543 1 L2 FERRITE C4 .22uF 50V C3 .22uF 50V L1 FERRITE 1 2 4 3 LF1 1 mH C2 .001 50V W1 20 G RED C1 .001 50V W5 20 G WHT R1 30 2W W3 20 G RED W2 20 G BLK R2 30 2W W4 20 G GRN PWB1 PCB FAB - SWEETSPOT FILTER 0020

8、718-01 SRM1502007 LOUD Technologies Inc. All rights re servedFinal Assembly Drawing (Control Assembly)PAGE 1 SRM1502007 LOUD Technologies Inc. All rights re servedFinal Assembly DrawingsPAGE 1 SRM1502007 LOUD Technologies Inc. All rights re servedFinal Assembly DrawingsPAGE 2 SRM1502007 LOUD Technol

9、ogies Inc. All rights re servedFinal Assembly DrawingsPAGE 3 SRM1502007 LOUD Technologies Inc. All rights re servedFront PCB Assembly (Top and Schematics)PAGE 1 TOP R93 R83 R81 R96 L9 Q1 JW3 C23 R52 R53 C27 R94 C82 R91 C8 D9 R73 R78 R58R57 D2 Q3 C1U3 C53 R54 C64 C1U1 R104 C49 C29 C87 R95 JWOPT1 D7 R

10、76 C85 JW2 R103 C1U5 R84 C83 U9 R19 U8 R56 C7 R61 C90 R69 R27 R28 Q7 C55 C12 C84 C60 C61 C65 R92 R90 C66 C77 D8 R14 Q4 C33 SW2 PHANTOM C19 C73 C2U3 R98 R66 R24 C75 C74 C68 C62 R65 C91 C63 C44 U1 R34 P1 GAIN C2U10 C39 C58 U4 R48 R47 Q8 P2 GAIN U10 C86 C50 C15 C18 C13 C14 C11 C22 C42 C26 C43 C21 C88 U

11、7 P5 MID C40 U2 C57 P3 STEREO LEVEL C20 R77 C70 RC1 R100 C76 Q10 P7 MAIN LEVEL J6 C59 C72 C67 U5 C30 Q5 J1 SW1 INSTRUMENT C56 C41 U3 U6 J5 U11P4 HIGH J4 C45 Q6 P6 LOW R L J3 J2 Plot Time: REV 100 A00 07/14/06 03/24/06 12/04/06 Sheet Class Code: 1of NONE WFB WFB Appvd byDate Drawn: 200 WFB NOTES: Che

12、cked: Released: Tolerance: Drawing Size: Drawing Type:09:16:49 Signatures: DateDESCRIPTION Drawing Number: 2 Drawing Title: A ASSEMBLY First Used On: Date: Ecr(s)/Ecn(s)Chgd By PREAMP PWA Mon Oct 02, 2006 03/01/06 ST. LOUIS MUSIC, INC 0015849-00 Plot Date: THE INFORMATION CONTAINED ON THIS DRAWING I

13、S PROPRIETARY TO INITIAL ISSUE MOVED MODE TRACE CHGD VALUE OF C19,83 ADDED C90,91 DEL R67,68 1901 Congressional, St. Louis, MO 63146 SECOND TURN 1. APPLY RTV SILICONE SEALANT PER SLM DOCUMENT NUMBER 00A005-00 CAUTION: THIS ASSEMBLY DRAWING IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. TO AVOID RISK OF

14、 ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. SRM1502007 LOUD Technologies Inc. All rights re servedFront PCB Assembly (Top and Schematics)PAGE 2 BOT R63 C2U6 R75 R80 C71 R21 C32 R22 Q2 R33 C2U4 R46

15、R38 R41 R101 R29 C1U2 D22 D20 C6 R102 C78 C1 L2 L6 R9 L12 D16 ZD1 D11 D10 D14 R87 C69 R89 R71 R97 R107 C31 R105 R55 R23 C46 R43 R50 C2U2 C89 C47 R36 C51 R51 R49 R37 D23 D24 L5 C3 C4 L7 L4 D15 R74 C48 C80 D13 C2U5 R59 C28 R79 D1 R86 R64 R99 R62 C2U1 R31 C36 R44 R30 C38 R32 C1U4 C1U10 R1 R70 Q9 C5 R11

16、R4 R10 R12 C25 R16 R17 L8 L3 C2 C24 R39 R40 C79 L11 C17 R6 D5 R88 Q11 C81 D12 R60 R106 C1U6 R18 R20 R85 Q12 R35 C54 C52 C37 R45 R42 R25 C16 L1 R8 C9 C10 R7 R72 R13 R15 R3 D6 R5 ZD2 D25 J7 R82 D17 D18 C34 R26 D19 D21 C35 R2 Chgd By WFB WFB Drawing Title: First Used On: Ecr(s)/Ecn(s) 2 A of2 Tolerance

17、: Date 03/24/06 07/14/06 12/04/06 Plot Date: Checked: Released: REV 100 A00 Drawn: 200 0015849-00 PREAMP PWA Appvd byDate NONE Drawing Number: ASSEMBLY Date: Sheet Class Code: Drawing Size: Drawing Type: Signatures: DESCRIPTION NOTES: 03/01/06 ST. LOUIS MUSIC, INC WFB Plot Time:09:16:49 THE INFORMAT

18、ION CONTAINED ON THIS DRAWING IS PROPRIETARY TO INITIAL ISSUE MOVED MODE TRACE CHGD VALUE OF C19,83 ADDED C90,91 DEL R67,68 Mon Oct 02, 2006 SECOND TURN 1. APPLY RTV SILICONE SEALANT PER SLM DOCUMENT NUMBER 00A005-00 1901 Congressional, St. Louis, MO 63146 CAUTION: THIS ASSEMBLY DRAWING IS PROVIDED

19、FOR USE BY QUALIFIED PERSONNEL. TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. SRM1502007 LOUD Technologies Inc. All rights re servedFront PCB Assembly (Top and Schematics)PAGE 3 SRM15

20、02007 LOUD Technologies Inc. All rights re served Power Amplifi er PCB Assembly (Layout and Schematics)PAGE 1 IC LAYER (TOP) TOP SILK Plot Time: REV 0 05/23/05 Sheet Class Code: 1of NONE Appvd byDate Drawn: RLB NOTES: Checked: Released: Tolerance: Drawing Size: Drawing Type:07:09:58 Signatures: Date

21、DESCRIPTION Drawing Number: 2 Drawing Title: A ASSEMBLY First Used On: Date: Ecr(s)/Ecn(s)Chgd By 2X75W CLASS-D AMP PWA Tue Dec 07, 2004 ST. LOUIS MUSIC, INC 06B359 Plot Date: THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO CONTROL ISSUE 1901 Congressional, St. Louis, MO 63146 1. APPLY R

22、TV SILICONE SEALANT PER SLM DOCUMENT NUMBER 00A005-00 CAUTION: THIS ASSEMBLY DRAWING IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. C20 R2 C

23、14 C33 C7 C21 C38 C6 C32 IC1 R3 C12 SRM1502007 LOUD Technologies Inc. All rights re served Power Amplifi er PCB Assembly (Layout and Schematics)PAGE 2 Plot Time: REV 0 05/23/05 Sheet Class Code: 2of NONE Appvd byDate Drawn: RLB NOTES: Checked: Released: Tolerance: Drawing Size: Drawing Type:07:10:00

24、 Signatures: DateDESCRIPTION Drawing Number: 2 Drawing Title: A ASSEMBLY First Used On: Date: Ecr(s)/Ecn(s)Chgd By 2X75W CLASS-D AMP PWA Tue Dec 07, 2004 ST. LOUIS MUSIC, INC 06B359 Plot Date: THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO CONTROL ISSUE 1901 Congressional, St. Louis, MO

25、 63146 1. APPLY RTV SILICONE SEALANT PER SLM DOCUMENT NUMBER 00A005-00 CAUTION: THIS ASSEMBLY DRAWING IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THAT EXPLAINED IN THE OPERATING INSTR

26、UCTIONS. SRM1502007 LOUD Technologies Inc. All rights re served Power Amplifi er PCB Assembly (Layout and Schematics)PAGE 3 2 3 4 AB AND 10 MEGOHM DIGITAL VOLTMETER. 3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL. 2) UNLESS NOTED, RESISTOR VALUES IN

27、OHMS, 1/4W-5% TOL. TOUCHING INTERNAL PARTS. AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER 1) CAUTION: SHOCK HAZARD! NOTES: THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND TO AVOID RISK OF ELEC

28、TRIC SHOCK, REFER SERVICING TO QUALIFIED THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. CAUTION: 1 BAC C REVDateDESCRIPTION Checked: Drawn: Released: Signatures: Drawing Type: Schematic Sheet Class Code: THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO ST. LOUIS MUSIC, INC Dra

29、wing Size: Plot Time: Plot Date: Tolerance: 0 05/23/05 WFB CONTROL ISSUE Wed Mar 09, 2005 07:33:07 Drawing Number: of Drawing Title: D B NONE 11 Date: First Used On: 9/01/04 11880 Borman Drive, St. Louis, MO 63146 06S359 Ecr(s)/Ecn(s)Chgd ByAppvd byDate 150W CLASS D PWR AMP 4 2 3 1 D IN2+ IN- VDDA I

30、N2- IN2+ VSSP VDDP VDDPVSSP OUT1+ IN2- IN+ MODE VSS 1 2 3 4 J2 VDD OUT2- 1 2 3 4 J3 VSS C7 .1 VDD 470 35 V C2 FERRITE L2 FERRITE L1 VSSP 22 63 V C8 VDDP IN- IN+ VDDA C36 .1 C10 .1 VDDA .1 C32 C12 .1 30.1K R5 1/10 W 1% VSSA VSSP C38 .1 VDDP VSSP C14 .1 .1 C13 .015 C23 C22 .015 VDDP 220 pF C25 10 1/8

31、W R11 VSSP OUT2- C27 .47 uF .47 uF C26 1 2 3 4 5 6 7 J1 .1 C6 OUT1+ TO MAIN BOARD 470 35 V C1 TO OUTPUT BOARD VSSA C37 .1 5231B 5.1V D1 C11 220 pF 220 pF C24 VSSA 22 63 V C3 47 35 V C5 R1 10 1/8 W C39 .1 C34 .1 220 pF C33 220 pF C21 220 pF C20 .1 C9 C15 .1 MODE R3 39K 1/10 W 220 pF C35 27 uH 5.6A ma

32、x 20OHM L6 27 uH 5.6A max 20OHM L5 10 1/8 W R10 47 35 V C4 R2 10 1/8 W VSSA 10 VddA1 3 VddA2 1 VssA2 24 VssD 6 MODE 19 SUB/VssD 14 VddP1 23 VddP2 17 VssP1 20 VssP2 12 VssA1 7 OSC 18 STABI 13 PROT 4 IN2- 5 IN2+ 9 IN1- 8 IN1+ 21 OUT2 16 OUT1 2 SGND2 11 SGND1 22 BOOT2 15 BOOT1 IC1 TDA8920B SRM1502007 L

33、OUD Technologies Inc. All rights re servedPower Supply PCB Assembly (Top and Schematics)PAGE 1 SRM1502007 LOUD Technologies Inc. All rights re servedPower Supply PCB Assembly (Top and Schematics)PAGE 2 ACV DCV 0019269-00 ACV DCV 3-27-07TH 1 C00 SCH0019269-00 SCHEMATIC, SWEETSPOT PWR SUPPLY TECHNOLOG

34、IES INC. WOODINVILLE WA. USA 2 D C B A REV. OF 1 1 SHEET DWG. NO. SCALE: NONE 2 DWG FILE: SIZE D ISSUED: MFG ENG: MFG: MATERIAL: NP ENG: CHECKED: DRAWN: DATEAPPROVALS 3 PROPERTY OF LOUD TECHNOLOGIES INC. IS PROPRIETARY AND CONFIDENTIAL THE INFORMATION CONTAINED HEREIN ALL RIGHTS RESERVED C 45 678 A

35、B C D 876 543 ECO#REV:DESCRIPTIONREV. BY: DATEAPP. BY: 1 2006 LOUD TECHNOLOGIES INC. AND 10 MEGOHM DIGITAL VOLTMETER. 3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL. 2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL. TOUCHING INTERNAL PARTS. AND

36、BE SURE POWER SUPPLY IS DISCHARGED BEFORE THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER 1) CAUTION: SHOCK HAZARD! NOTES: THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED THIS SC

37、HEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. CAUTION: FOR ASSEMBLY: 27V MAX INPUT CAUTION: CIRCUIT NOT ISOLATED FROM AC LINE! POWER INPUT: 100-240VAC 50/60Hz C4 .68 275V C10 10 C3 .001 250V BD1 KBL406 R18 33.2K 1/2W 1% C7 .022 100V R2 100K 1W C5 330 400V C8 47 R4 47K C23 220 63V C24 .001 100V

38、 R11 22 C16 2200 35V C17 2200 35V R7 1K R12 2.21K 1% R13 20.0K 1per R14 23.2K 1per 1 2 3 4 J3 TO PREAMP J2 J1 1 1 2 2 J4 TO LED C1 .001 250V Q1 MPS-A06 R17 33.2K 1/2W 1% R5 100K 1W PC1-B H11A817A R9 47.5K 1% 2W C14 .001 1KV C15 .001 1KV C18 2200 35V C19 2200 35V JW3 JW2 JW4 R6 47K C2 .1 275V UL 1 1

39、2 2 4 4 3 3 LF1 10mH R1 681K 1% 1/2W W1 18G BLK D3 1N914 C9 4.7 63V R3 1M D2 UF4004 DRAIN GNDVCC FDBK S_START IC1 KA5M0965Q D4 UF4007 C12 220 pF 1KV NTC1 3A L3 FERRITE D7 UF4004 L1 4.7 uH D5 D15LC20U C11 .1 R8 3.92K 1% L2 4.7 uH R10 1.5K D6 D15LC20U JW1 C13 .022 400V 1 2 3 5 6 9 10 11 12 13 14 15 16

40、 1 2 3 5 22 9 10 11 12 13 14 15 16 8 8 T1 D1 1N914 C6 100 pF 250V R15 30 2W C21 .1 C20 .1 1 REF 3 K 2 A IC2 KA431AZ 2 1 PC1-A H11A817A R16 30 2W 1 2 3 4 J5 TO PWRAMP PWB1 PCB FAB - SWEETSPOT POWER SUPPLY 0019268-03 1 1 1 1 1 -VOUT CKT_GND CKT_GND CKT_GND -VOUT CKT_GND GND_1 GND_1 +VOUT PHANTOMPHANTO

41、M +VOUT -VOUT -VOUT PHANTOM A-1 Components noted with this symbol shall be replaced only by the component specifi ed. This is required to maintain product safety. June 2007 Parts List SRM150 PART #REVDESCRIPTIONPAGE 0019074-00A07FINAL ASSEMBLY - 120V2 0019074-01A07FINAL ASSEMBLY - 230V3 0019279A00CO

42、NTROL ASSEMBLY4 0015849-00A02PCB ASSEMBLY - FRONT4 0019269-00C00PCB ASSEMBLY - POWER SUPPLY7 0019267-00A00PCB ASSEMBLY - POWER AMP8 0015851-00A01PCB ASSEMBLY - BACK8 0020719-00B00PCB ASSEMBLY - FILTER9 HIGH 12kHz MID 2.5kHz LOW 100Hz MAXMIN U +15-15 U +15-15 U +15-15 MAXMINMAXMIN SRM150 MAXOFFLEVEL

43、EQ MIC/LINEMIC/LINE 123 L R PHANTOM POWER MAIN INSTRUMENT (CH 1) 48V A-2 Components noted with this symbol shall be replaced only by the component specifi ed. This is required to maintain product safety. June 2007 SRM150 continued PART#REVDESCRIPTIONQTYNOTES 0021219A01DRIVER/CONE LN05/1002-81WOOFER

44、0015294A00GRILL1GRILL 83483026ACONN POWER CORD USA1LINE CORD USA 0007334APCB ASSEMBLY / LED / SRS15001LED PCB ASSEMBLY 0019075B00FRONT HOUSING1 0019076B00REAR HOUSING1 0019279A00CONTROL ASSEMBLY1SEE PAGE 4 0019269-00C00PCB ASSEMBLY - POWER SUPPLY1SEE PAGES 7-8 0019267-00A00PCB ASSEMBLY - POWER AMP1S

45、EE PAGE 8 0015851-00A01PCB ASSEMBLY - BACK1SEE PAGE 8 0020719-00B00PCB ASSEMBLY - FILTER1SEE PAGE 9 0019278A00HEATSINK1HEATSINK 500-052-00ASWITCH SPST POWER ROCKER RTA BLACK1SWITCH 0019282A00CONN AC LINE FILTER 3A1 0019330A00TOP HANDLE1 0019780A00STAND MOUNT - PLASTIC1STAND MOUNT - PLASTIC 0019781A0

46、0THREADED INSERT1 0019753B00BOX1 0022006A00INSERT - TOP / BOTTOM2 0019722A00PANEL INNER PREAMP COVER1 0019725A00RETAINING CLIP1 0019843A00ALUMINUM OXIDE CERAMIC TO-3P INSUL.1 0007794-08A00SCREW M3 X 8MM PAN MCH EXT SEMS PH STL CL ZINC 14 0007794-06A00SCREW M3 X 6MM PAN MCH EXT SEMS PH STL CL ZINC1 0

47、007794-12A00SCREW M3 X 12MM PAN MCH EXT SEMS PH STL CL ZINC4 0000623-12B00SCREW M3 X 12MM PAN MCH PH SS BLACK ZINC1 0000659A00NUT HEX KEP M33 0010032ASCREW/M5X12 PH PHMS BLACK DIN7985A2 0001058AI/WASHER/FLAT M5 BLACK2 700-055-00AMCH 4-24X3/8 PHP BLACK HILO4 0019890A00SCREW/ 6-19 X 3/4” PH PH TFS PLA

48、STITE 48-2 BLACK8 0019891A00SCREW/ 8-16 X 1” PH PH TFS PLASTITE 48-2 BLACK1 0023736A00SCREW SELFTAP PLASTITE 48-2 8-16X1-1/2 PNH PHH6 0018209100SCREW/#6-19X1/2” PH PH TFS PLASTITE 48-24 701-021-00A6X3/8 PHP PLASTITE BLACK5 0019892A00SCREW/ 4-20 X 3/8” PH PH TFS PLASTITE 48-2 BLACK4 0019911B00STANDOF

49、F NYLON 3/8”1 0019958A00FUSE CIRCUIT BREAKER 3A1FUSE 0019959A00NUT THIN M24 X 21 0019995A00GASKET 3MM URETHANE1890MM 0019996A00GASKET 2.5MM X 2.5MM URETHANE1735MM 0019997B00GASKET URETHANE , FRONT HOUSING1 0020488A00CABLES/WIRE 7 PIN 1-7 WIRE HARNESS1PREAMP TO POWER AMP 0020489A00CABLES/WIRE 5 PIN 1-1 WIRE HARNESS1PREAMP TO LINE I/O 0019074-00 REV A07 FINAL ASSEMBLY - 120V A-3 Components noted with this symbol shall be replaced only