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6240A.sch-1 - Wed Nov 27 16:07:06 2002

400RB-IV Power Amp Part No. Reference 001-2060-0 U1 010-0000-0 Q7 010-0001-0 Q2 Q6 010-0003-0 Q15 010-0012-0 Q1 Q3-4 Q10 Q12 Q29 010-0035-0 Q27 010-1002-0 Q5 Q9 010-1003-0 Q17 010-1013-0 Q8 Q11 Q13 012-0002-0 Q16 Q18 Q20 012-0003-0 Q24-26 012-1002-0 Q14 Q19 Q28 012-1003-0 Q21-23 020-0004-0 D11 020-0050-0 D7 020-0150-0 D12 D17 020-0240-0 D18 020-1000-0 D2-3 D5 D8-10 D13-16 020-1022-0 D4 D6 020-1104-0 D1 020-2106-0 D19-20 023-0112-0 BR1 031-1336-0 C11 031-2105-0 C12 031-2106-0 C2 C4 C6 C20-21 031-2107-0 C1 C17 C19 031-3129-0 C25-26 031-3476-0 C13-14 C16 C18 032-4102-0 C24 032-4103-0 C15 032-4104-0 C7-9 032-7104-0 C22 C27-28 034-4471-0 C5 034-7103-0 C23 035-8030-0 C3 035-8561-0 C10 052-2.74-0 R40 R44 052-2212-0 R35 R37 052-5622-0 R18 R30 054-.100-0 R46-57 054-.330-0 R60 055-0101-0 R58-59 056-0100-0 R62 059-1000-0 R33-34 059-1002-0 R3 R7 R27 059-2432-0 R36 R38 059-4750-0 R20 R31 059-6810-0 R45 060-1001-0 R61 060-1002-0 R2 R6 R16 R23 060-1003-0 R24 R41 060-1004-0 R28-29 060-1213-0 R5 R14 060-1821-0 R11-12 R22 060-2001-0 R4 060-2003-0 R42-43 060-2004-0 R8 060-2212-0 R9 R13 R15 R17 060-2432-0 R21 060-3922-0 R25 060-4323-0 R10 060-4752-0 R39 060-4753-0 R26 060-6812-0 R1 060-7501-0 R32

Description LM555, TIMER 2SC3381BL,NPNX2,80V,100MA,2-10M1B 2SC3478, NPN,180V,100MA,TO-92 2SC3502-F,NPN,200V,100MA,TO-126 MPSAO6, NPN,80V,500MA,TO-92 LM35DT, TEMPERATURE SENSOR, TO-220 2SA1376, PNP,180V,100MA,TO-92 2SA1380-F,PNP,200V,100MA,TO-126 MPSA56 PNP 80V 500MA TO-92 2SC4793,NPN,200V,1.5A,2-10R1A 2SC5242,NPN,230V,15A,2-16C1A 2SA1837,PNP,200V,1.5A,2-10R1A 2SA1962,PNP,230V,15A,2-16C1A 1N755A, ZENER,7.5V,500MW ,D035 1N751, ZENER,5.1V,10%,400MW,DO-35 1N965B, ZENER, 15V, 5%, 500mW, DO-35 1N970B, ZENER, 24V, 5%, 500MW, DO-35 1N4148, RECT-FAST, 200MA, 100V BAV20, RECT, 200V, DO-35 SHOTTKY, 1A, 40V, 10NS, DO-41 1N4004,RECT,1A,400V,DO-41 BRIDGE, 25A, 200V, VERT, PC, MO25S-02 CAP,ELEC,RAD,336,20%,25V CAP,ELEC,RAD, 105, 20%, 50V CAP,ELEC,RAD, 106, 20%, 50V CAP,ELEC,RAD,107, 20%, 50V CAP, ELEC, RAD, 129, 20%, 63V CAP,ELEC,RAD,476,20%,63V CAP,PE,102,5%,100V, CAP,PE,103,5%,100V, CAP,PE,104,5%,100V, CAP,PE,104,10%, 250V CAP,MCR,470pF,5%,100V, CAP, CERMIC DISK, 103, 10%, X-250V CAP MICA AXIAL , 3pF, 10%, 500V CAP MICA RADIAL, 561, 5%, 300V RES,METAL FILM, 2.74, 1/4W, 1% RES,METAL FILM,2.21k,1/4W,1% RES,METAL FILM,5.62K,1/4W,1% RES, METAL OXIDE, 0.1 Ohm, 1W, 5% RES, METAL OXIDE, 0.33 OHM, 1W, 5% RES, METAL OXIDE, 10 OHM, 2W, 5% RES, CERAMIC WW, 1.0 OHM, 5W, 10% RES,MF,FUSE,10.0 OHM, 1/4W,1% RES,MF,FUSE,1.00K,1/4W,1% RES,MF,FUSE,2.43K, 1/4W,1% RES,MF,FUSE,47.5 OHM, 1/4W,1% RES,MF,FUSE,68.1 OHM, 1/4W,1% RES, METAL FILM, 100 OHM, 1/8W, 1% RES,METAL FILM, 1.00K, 1/8W, 1% RES,METAL FILM, 10.0K, 1/8W,1% RES,METAL FILM, 100K, 1/8W, 1% RES,METAL FILM, 12.1K OHM, 1/8W, 1% RES,METAL FILM, 182, 1/8W, 1% RES,METAL FILM, 200, 1/8W, 1% RES,METAL FILM, 20.0K, 1/8W, 1% RES,METAL FILM, 200K, 1/8W, 1% RES,METAL FILM, 2.21K, 1/8W, 1% RES,METAL FILM, 2.43K, 1/8W, 1% RES,METAL FILM, 3.92K, 1/8W, 1% RES,METAL FILM, 43.2K, 1/8W, 1% RES,METAL FILM, 4.75K, 1/8W, 1% RES,METAL FILM, 47.5K, 1/8W, 1% RES,METAL FILM, 6.81K, 1/8W, 1% RES,METAL FILM, 750 OHM, 1/8W, 1%

Manufacturer NATIONAL TOSHIBA NEC TOSHIBA MOTOROLA NATIONAL NEC SANYO/TOSHIBA MOTOROLA TOSHIBA TOSHIBA TOSHIBA TOSHIBA TAITRON NATIONAL TAITRON TAITRON MOTOROLA NATIONAL MOTOROLA TAITRON CHENG-YI UNITED CHEMI-CON UNITED CHEMI-CON UNITED CHEMI-CON UNITED CHEMI-CON UNITED CHEMI-CON UNITED CHEMI-CON PANASONIC PANASONIC PANASONIC ILLINOIS CAPACITOR TAITRON PANASONIC CORNELL CORNELL ECI ECI ECI ECI ECI ECI ECI JUKN.OHM JUKN.OHM JUKN.OHM JUKN.OHM JUKN.OHM ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI

Mfr. Part No. LM555CN 2SC3281BL 2SC3478-K 2SC3502 MPS-A06 LM35DT 2SA1376-K 2SA1380-F/E MPS-A56 2SC4793 2SC5242-O 2SA1837 2SA1962 1N755A 1N751 1N965B 1N970B 1N4148 BAV20 1N5819 1N4004 MP25-02S SRG25VB33RM5X7LL C440C105M5U5CA SMG50VB10RM5X11LL SMG50VB101M8X11LL SMH63VN123M35X45T2 SMG63VB47RM6X11LL ECQB1102JF ECQV1103JM ECQV1104JM 104MSR250K TMRS471J100NPOB ECK-DRS103ZV CD10CD030D03 CD15FC561J103 M2F1AJ002.74 M2F1AK002.21 M5F1AK005.62 MO10J3AJ000.10 MO10J3AJ000.33 MOM20J3AJ010.00 WWC50J3AJ001.00 FR25-10.0 FR25-1.00K FR25-2.43K FR25-47.5 FR25-68.1 M1F1AJ100.00 M1F1AK001.00 M1F1AK010.00 M1F1AK100.00 M1F1AK012.10 M1F1AJ182.00 M1F1AJ200.00 M1F1AK020.00 M1F1AK200.00 M1F1AK002.21 M1F1AK002.43 M1F1AK003.92 M1F1AK043.20 M1F1AK004.75 M1F1AK047.50 M1F1AK006.81 M1F1AJ750.00

6240A bom-4/21/2004-Rev B

400RB-IV Power Amp Part No. Reference 070-0520-0 R19 081-0055-0 L1 091-0019-0 F1 091-1002-0 S1 092-0001-0 J7 092-0066-0 J10-20 092-0082-0 J3 J6 093-0025-0 J4-5 093-0051-0 J1 093-0080-0 J9 093-2005-0 J2 094-0004-0 J8

Description POT,500B TRIM, 200mW INDUCTOR,2UH,20A,AIR CORE FUSE,5mm,T5AL,250V,SEMKO THRM BRKR, 105C +/-5,0-DIFF, PC CON, IECX3, 10A, 250V, PC TERM FASTON, M, PC, .250" JACK,1/4",MONO,PC, GROUNDING HDR,.1X2,VERT,MALE,LOCK,GOLD HDR, 2MMX2, VERT, LOCK HDR,.156X3,VERT,MALE,LOCKING HDR, 2MMX7, VERT, SHROUDED FUSE CLIP, 5MM, 15A, P.C.

Manufacturer SONG HUEI SCHONBERG LITTLE FUSE KLIXON DIHTAIN KEYSTONE NEUTRIK AMP JST MOLEX JST MOUSER

Mfr. Part No. SH-655MCL-500B 081-0055-0 218-005 7AM-028-A5 DTS-0045 1021 S102-84G 641126-2 B2B-PH-K-S 26-60-4030 B7B-PH-K-S 44FH052

086-0000-0 093-0506-0 093-0909-0 095-0006-0 104-0003-0 105-0014-0 117-0097-0 117-0127-0 117-0357-0 117-7002-1 132-0024-E 145-0240-A 153-0105-0 202-6000-A

INDUCTOR TO-220 POWER TRAN FAN FAN HEATSINK

CHASSIS GND

FAN, 24VDC, 160MA, 80X80MM HSG, .1X2, LOCKING, CRIMP 093-0909 TERM, CRIMP, .1, 22GA HEAT SHRINK 3/16" SPACER,NYLON,#4X.2X.2D INSULATOR TAPE 4"X7MIL BOLT, M3X9, M1,PHP/SW/PW, CH BOLT, M12X9, M1,PHP/SW/PW, CH BOLT, M35X9, M1,PHP/SW/PW, CH WASHER,M3,PLAIN, CHROME 700RB HEATSINK 400RB-IV POWER AMP RAW BOARD LABLE, BLANK,.9"X.25" WIRE ASSY,14GA,GRN/YEL,4",GND

ADDA MOLEX MOLEX

08-24-HB-A70GL 22-01-3027 08-50-0113

THERMALOY

SILPAD 400AC

6240A bom-4/21/2004-Rev B

gallien technology
Customer Name: Model: Assembly Description: Assembly Numbers:

Engineering Change Order
Current Rev #: Distribute To: Originator: RAG Approved by: Effective Date: 5/30/2003 Document Update Date Initials

Gallien-Krueger 400RB-IV Power Amp 206-0240-A
Effective

A

New ECO Rev #: Page:

1

Of:

A1 1

All in Process All in Service All in Stock Beginning Serial Number:

X

Next Buy Next Production Run

Artwork Assembly Dwg.

X X
Reason For Change

Board Artwork BOM Control Form Costing Fab Drawing Inspection Proc.

Update to incorporate CSA requirements.

X X X

Part Master File Schematic Service Manual Test Procedure

Continued on ECO Supplement Page Description Of Change

Other Affected Assemblies 290 Assemblies , 302 Assembly (Head) 303 Assemblies (Combo)
Distribution Accounting Assembly Date Initials

See changes listed below. Update board rev to A1. X X X X

Engineering Incoming Q.C. Production Eng. Purchasing Q.A. Service

X
Continued on Supplement Page Part Number Description Qty Drawing(s) attached Parts Added Ref. Designator

Test Parts Deleted Qty Ref. Designator

031-4475-0 091-0013-0 031-2106-0 091-0019-0

4.7uF/100V Fuse,T6.3AL 10uF/50V Fuse,T5AL

1 1

C4 F1 1 1 C4 F1

400RB-IV 206-0240 Power Amp, 4/9/2004

6240A1.sch-1 - Tue Jun 03 10:29:26 2003

gallien technology
Customer Name: Model: Assembly Description: Assembly Numbers:

Engineering Change Order
Current Rev #: A1 Distribute To: Originator: RAG Approved by: Effective Date: Document Update Date Initials Artwork Assembly Dwg. New ECO Rev #: Page:

Gallien-Krueger 400RB-IV Power Amp 206-0240-A 145-0240-A
Effective

1

Of:

A2 1

All in Process All in Service All in Stock Beginning Serial Number:

X

Next Buy Next Production Run

X X
Reason For Change

Board Artwork BOM Control Form Costing Fab Drawing Inspection Proc.

Add 240V supply table to board and schematic.

X X X

Part Master File Schematic Service Manual Test Procedure

Continued on ECO Supplement Page Description Of Change

Other Affected Assemblies 290 Assemblies , 302 Assembly (Head) 303 Assemblies (Combo)
Distribution Accounting Assembly Date Initials

X X X X

Engineering Incoming Q.C. Production Eng. Purchasing Q.A. Service

X
Continued on Supplement Page Part Number Description Qty Drawing(s) attached Parts Added Ref. Designator

Test Parts Deleted Qty Ref. Designator

400RB-IV 206-0240 Power Amp, 4/9/2004

6240A2.sch-1 - Thu Nov 27 17:33:32 2003

400RB-IV Power Amp Part No. Reference 001-2060-0 U1 010-0000-0 Q7 010-0001-0 Q2 Q6 010-0003-0 Q15 010-0012-0 Q1 Q3-4 Q10 Q12 Q29 010-0035-0 Q27 010-1002-0 Q5 Q9 010-1003-0 Q17 010-1013-0 Q8 Q11 Q13 012-0002-0 Q16 Q18 Q20 012-0003-0 Q24-26 012-1002-0 Q14 Q19 Q28 012-1003-0 Q21-23 020-0004-0 D11 020-0050-0 D7 020-0150-0 D12 D17 020-0240-0 D18 020-1000-0 D2-3 D5 D8-10 D13-16 020-1022-0 D4 D6 020-1104-0 D1 020-2106-0 D19-20 023-0112-0 BR1 031-1336-0 C11 031-2105-0 C12 031-2106-0 C2,6,20,21 031-2107-0 C1 C17 C19 031-3129-0 C25-26 031-3476-0 C13-14 C16 C18 031-4475-0 C4 032-4102-0 C24 032-4103-0 C15 032-4104-0 C7-9 032-7104-0 C22 C27-28 034-4471-0 C5 034-7103-0 C23 035-8030-0 C3 035-8561-0 C10 052-2.74-0 R40 R44 052-2212-0 R35 R37 052-5622-0 R18 R30 054-.100-0 R46-57 054-.330-0 R60 055-0101-0 R58-59 056-0100-0 R62 059-1000-0 R33-34 059-1002-0 R3 R7 R27 059-2432-0 R36 R38 059-4750-0 R20 R31 059-6810-0 R45 060-1001-0 R61 060-1002-0 R2 R6 R16 R23 060-1003-0 R24 R41 060-1004-0 R28-29 060-1213-0 R5 R14 060-1821-0 R11-12 R22 060-2001-0 R4 060-2003-0 R42-43 060-2004-0 R8 060-2212-0 R9 R13 R15 R17 060-2432-0 R21 060-3922-0 R25 060-4323-0 R10 060-4752-0 R39 060-4753-0 R26 060-6812-0 R1 060-7501-0 R32

Description LM555, TIMER 2SC3381BL,NPNX2,80V,100MA,2-10M1B 2SC3478, NPN,180V,100MA,TO-92 2SC3502-F,NPN,200V,100MA,TO-126 MPSAO6, NPN,80V,500MA,TO-92 LM35DT, TEMPERATURE SENSOR, TO-220 2SA1376, PNP,180V,100MA,TO-92 2SA1380-F,PNP,200V,100MA,TO-126 MPSA56 PNP 80V 500MA TO-92 2SC4793,NPN,200V,1.5A,2-10R1A 2SC5242,NPN,230V,15A,2-16C1A 2SA1837,PNP,200V,1.5A,2-10R1A 2SA1962,PNP,230V,15A,2-16C1A 1N755A, ZENER,7.5V,500MW ,D035 1N751, ZENER,5.1V,10%,400MW,DO-35 1N965B, ZENER, 15V, 5%, 500mW, DO-35 1N970B, ZENER, 24V, 5%, 500MW, DO-35 1N4148, RECT-FAST, 200MA, 100V BAV20, RECT, 200V, DO-35 SHOTTKY, 1A, 40V, 10NS, DO-41 1N4004,RECT,1A,400V,DO-41 BRIDGE, 25A, 200V, VERT, PC, MO25S-02 CAP,ELEC,RAD,336,20%,25V CAP,ELEC,RAD, 105, 20%, 50V CAP,ELEC,RAD, 106, 20%, 50V CAP,ELEC,RAD,107, 20%, 50V CAP, ELEC, RAD, 129, 20%, 63V CAP,ELEC,RAD,476,20%,63V CAP,ELEC,RAD, 475, 20%, 100V CAP,PE,102,5%,100V, CAP,PE,103,5%,100V, CAP,PE,104,5%,100V, CAP,PE,104,10%, 250V CAP,MCR,470pF,5%,100V, CAP, CERMIC DISK, 103, 10%, X-250V CAP MICA AXIAL , 3pF, 10%, 500V CAP MICA RADIAL, 561, 5%, 300V RES,METAL FILM, 2.74, 1/4W, 1% RES,METAL FILM,2.21k,1/4W,1% RES,METAL FILM,5.62K,1/4W,1% RES, METAL OXIDE, 0.1 Ohm, 1W, 5% RES, METAL OXIDE, 0.33 OHM, 1W, 5% RES, METAL OXIDE, 10 OHM, 2W, 5% RES, CERAMIC WW, 1.0 OHM, 5W, 10% RES,MF,FUSE,10.0 OHM, 1/4W,1% RES,MF,FUSE,1.00K,1/4W,1% RES,MF,FUSE,2.43K, 1/4W,1% RES,MF,FUSE,47.5 OHM, 1/4W,1% RES,MF,FUSE,68.1 OHM, 1/4W,1% RES, METAL FILM, 100 OHM, 1/8W, 1% RES,METAL FILM, 1.00K, 1/8W, 1% RES,METAL FILM, 10.0K, 1/8W,1% RES,METAL FILM, 100K, 1/8W, 1% RES,METAL FILM, 12.1K OHM, 1/8W, 1% RES,METAL FILM, 182, 1/8W, 1% RES,METAL FILM, 200, 1/8W, 1% RES,METAL FILM, 20.0K, 1/8W, 1% RES,METAL FILM, 200K, 1/8W, 1% RES,METAL FILM, 2.21K, 1/8W, 1% RES,METAL FILM, 2.43K, 1/8W, 1% RES,METAL FILM, 3.92K, 1/8W, 1% RES,METAL FILM, 43.2K, 1/8W, 1% RES,METAL FILM, 4.75K, 1/8W, 1% RES,METAL FILM, 47.5K, 1/8W, 1% RES,METAL FILM, 6.81K, 1/8W, 1% RES,METAL FILM, 750 OHM, 1/8W, 1%

Manufacturer NATIONAL TOSHIBA NEC TOSHIBA MOTOROLA NATIONAL NEC SANYO/TOSHIBA MOTOROLA TOSHIBA TOSHIBA TOSHIBA TOSHIBA TAITRON NATIONAL TAITRON TAITRON MOTOROLA NATIONAL MOTOROLA TAITRON CHENG-YI UNITED CHEMI-CON UNITED CHEMI-CON UNITED CHEMI-CON UNITED CHEMI-CON UNITED CHEMI-CON UNITED CHEMI-CON UNITED CHEMI-CON PANASONIC PANASONIC PANASONIC ILLINOIS CAPACITOR TAITRON PANASONIC CORNELL CORNELL ECI ECI ECI ECI ECI ECI ECI JUKN.OHM JUKN.OHM JUKN.OHM JUKN.OHM JUKN.OHM ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI ECI

Mfr. Part No. LM555CN 2SC3281BL 2SC3478-K 2SC3502 MPS-A06 LM35DT 2SA1376-K 2SA1380-F/E MPS-A56 2SC4793 2SC5242-O 2SA1837 2SA1962 1N755A 1N751 1N965B 1N970B 1N4148 BAV20 1N5819 1N4004 MP25-02S SRG25VB33RM5X7LL C440C105M5U5CA SMG50VB10RM5X11LL SMG50VB101M8X11LL SMH63VN123M35X45T2 SMG63VB47RM6X11LL SMG100VB4R7M5X11LL ECQB1102JF ECQV1103JM ECQV1104JM 104MSR250K TMRS471J100NPOB ECK-DRS103ZV CD10CD030D03 CD15FC561J103 M2F1AJ002.74 M2F1AK002.21 M5F1AK005.62 MO10J3AJ000.10 MO10J3AJ000.33 MOM20J3AJ010.00 WWC50J3AJ001.00 FR25-10.0 FR25-1.00K FR25-2.43K FR25-47.5 FR25-68.1 M1F1AJ100.00 M1F1AK001.00 M1F1AK010.00 M1F1AK100.00 M1F1AK012.10 M1F1AJ182.00 M1F1AJ200.00 M1F1AK020.00 M1F1AK200.00 M1F1AK002.21 M1F1AK002.43 M1F1AK003.92 M1F1AK043.20 M1F1AK004.75 M1F1AK047.50 M1F1AK006.81 M1F1AJ750.00

6240A1 bom-4/21/2004-Rev B

400RB-IV Power Amp Part No. Reference 070-0520-0 R19 081-0055-0 L1 091-0013-0 F1 091-1002-0 S1 092-0001-0 J7 092-0066-0 J10-20 092-0082-0 J3 J6 093-0025-0 J4-5 093-0051-0 J1 093-0080-0 J9 093-2005-0 J2 094-0004-0 J8

Description POT,500B TRIM, 200mW INDUCTOR,2UH,20A,AIR CORE FUSE,5mm,T6.3AL,250V,SEMKO THRM BRKR, 105C +/-5,0-DIFF, PC CON, IECX3, 10A, 250V, PC TERM FASTON, M, PC, .250" JACK,1/4",MONO,PC, GROUNDING HDR,.1X2,VERT,MALE,LOCK,GOLD HDR, 2MMX2, VERT, LOCK HDR,.156X3,VERT,MALE,LOCKING HDR, 2MMX7, VERT, SHROUDED FUSE CLIP, 5MM, 15A, P.C.

Manufacturer SONG HUEI SCHONBERG LITTLE FUSE KLIXON DIHTAIN KEYSTONE NEUTRIK AMP JST MOLEX JST MOUSER

Mfr. Part No. SH-655MCL-500B 081-0055-0 218-06.3 7AM-028-A5 DTS-0045 1021 S102-84G 641126-2 B2B-PH-K-S 26-60-4030 B7B-PH-K-S 44FH052

086-0000-0 093-0506-0 093-0909-0 095-0006-0 104-0003-0 105-0014-0 117-0097-0 117-0127-0 117-0357-0 117-7002-1 132-0024-E 145-0240-A 153-0105-0 202-6000-A

INDUCTOR TO-220 POWER TRAN FAN FAN HEATSINK

CHASSIS GND

FAN, 24VDC, 160MA, 80X80MM HSG, .1X2, LOCKING, CRIMP 093-0909 TERM, CRIMP, .1, 22GA HEAT SHRINK 3/16" SPACER,NYLON,#4X.2X.2D INSULATOR TAPE 4"X7MIL BOLT, M3X9, M1,PHP/SW/PW, CH BOLT, M12X9, M1,PHP/SW/PW, CH BOLT, M35X9, M1,PHP/SW/PW, CH WASHER,M3,PLAIN, CHROME 700RB HEATSINK 400RB-IV POWER AMP RAW BOARD LABLE, BLANK,.9"X.25" WIRE ASSY,14GA,GRN/YEL,4",GND

ADDA MOLEX MOLEX

08-24-HB-A70GL 22-01-3027 08-50-0113

THERMALOY

SILPAD 400AC

6240A1 bom-4/21/2004-Rev B

gallien technology
Customer Name: Model: Assembly Description: Assembly Numbers:

Engineering Change Order
Current Rev #: A2 Distribute To: Originator: RAG Approved by: Effective Date: 12/14/2003 Document Update Date Initials Artwork Assembly Dwg. New ECO Rev #: Page:

Gallien-Krueger 400RB-IV Power Amp 206-0240-A 145-0240-A
Effective

1

Of:

A3 1

X

All in Process All in Service

X

Next Buy Next Production Run

All in Stock Beginning Serial Number: Reason For Change

X X X

Board Artwork BOM Control Form Costing Fab Drawing Inspection Proc.

Prevent fuse failure due to inrush current at turn on. An improvement to A2 which was not put into production.

X X X

Part Master File Schematic Service Manual Test Procedure

Continued on ECO Supplement Page Description Of Change

Other Affected Assemblies 290 Assemblies , 302 Assembly (Head) 303 Assemblies (Combo)
Distribution Accounting Assembly Date Initials

Add NTC thermistors to the primary side of the transformer. One for 120V and another for 230V. An additional primary terminal is added to accommodate the wireing. For current production a thermistor of the proper value will be added to the bottom of the board. For 220V-240V use NTC-4R/5A. For 100V-120V use NTC-1.3R/7A.
Continued on Supplement Page Part Number Description Qty Drawing(s) attached Parts Added Ref. Designator

X X X X

Engineering Incoming Q.C. Production Eng. Purchasing Q.A. Service Test Parts Deleted Qty Ref. Designator

022-3003-0 022-3006-0 092-0066-0

THR NTC-1.3R/7A THER NTC-4R/5A FASTON

1 1 1

R63 R64 J21

400RB-IV 206-0240 Power Amp, 4/9/2004

6240A3.sch-1 - Thu Jan 08 10:48:13 2004