Behringer KM750 Service Manual

Service Manual

Created: 10 November 2017

KM750

Professional 750-Watt Stereo Power Amplifier with
ATR (Accelerated Transient Response)

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

PCB Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

© 2017 MUSIC Group IP Ltd. All third party trademarks mentioned belong to their respective owners and are not affiliated with MUSIC Group IP Ltd. All information (including
drawings and diagrams) contained in this document is the property of MUSIC Group IP Ltd., its subsidiaries or content providers, and is protected by intellectual property (copyright,
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KM750

Specifications

- 2 x 400 Watts into 4 Ohms; 2 x 200 Watts into 8 Ohms; 750 Watts into 8 Ohms (bridge mode)

- ATR (Accelerated Transient Response) technology for ultimate punch and clarity

- Switchable limiters offer maximum output level with reliable overload protection

- Precise power, signal and clip LEDs to monitor performance

- XLR, 1/4'' TRS and RCA input connectors for compatibility with any source

- Professional speaker connectors and "touch-proof" binding posts support most speaker wiring
systems

- Independent DC and short circuit protection on each channel automatically protects amplifier and
speakers

- High-current toroidal transformer for ultra-high transient response and absolute reliability

- Active cooling on heatsink

- "Built-like-a-tank" impact-resistant, all-steel 2U rackmount chassis

- 3-Year Warranty Program*

- Designed and engineered in Germany

PCB SchematicKM750

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PCB SchematicKM750

Page 4

PCB SchematicKM750

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PCB SchematicKM750

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PCB SchematicKM750

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PCB SchematicKM750

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PCB SchematicKM750

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Service Assemblies

Quantity Unit S.Sku M.Sku Description Reference Designators Notes

1 Q31-00001-61081 A31-00001-61081 OEM;FAN;BRUSHLESS;TD902524HS-S0-GP;B.S.B.A.0900002 [EXTRA SPARE]

2 Q33-00001-61192 A33-00001-61192 OEM;MISCELLANEOUS;P0BRI MAIN ASSEMBLY PCBA01;Y.Z.I111.01A [EXTRA SPARE]

3 Q33-00001-61194 A33-00001-61194 OEM;MISCELLANEOUS;P0BRI CONTROL ASSEMBLY

PCBA03;Y.Z.I111.10A

[EXTRA SPARE]

4 Q33-00001-61196 A33-00001-61196 OEM;MISCELLANEOUS;P0BRI SPEAKON OUTPUT ASSEMBLY

PCBA04;Y.Z.I111.11A

[EXTRA SPARE]

5 Q33-00001-61193 A33-00001-61193 OEM;MISCELLANEOUS;P0BRI MAINS INPUT ASSEMBLY

PCBA02;Y.Z.I111.09A

[EXTRA SPARE]

Cable

Quantity Unit S.Sku M.Sku Description Reference Designators Notes

1 Q81-00001-61197 A81-00001-61197 OEM;WIRE HARNESS;LENGTH:400 MM;AWG:26;UL2468;PITCH:2.54

MM;POLES:8;FLAT CABLE;BGB-0408-26-0400;B.G.B.0408260400

[EXTRA SPARE]

2 1.0000 PC Q76-15032-55649 A76-15032-55649 CABLE;AC-CORD;CLASS

II;W/POLYBAG;JAPAN;LENGTH:150cm;POLES:3;APPROVAL:PSE;JS15S
3 + VCTF 3x0.75mm2 + V1528

(JPSH, JPMG)

3 1.0000 PC Q76-15042-05624 A76-15042-05624 CABLE;AC-CORD;W/POLYBAG;LENGTH:150cm;H05VV-

F3G0.75MM2;VERSION;UK;SPEC.NO:05624

(UK)

4 1.0000 PC Q76-18050-47490 A76-18050-47490 CABLE;AC-CORD;LENGTH:180cm;VERSION:SAA;PLUG:HE105

ISOLATED;SAA H05VV-F 3x0.75mm2;CONN.HP-3;SPEC.NO:47490

(SAA)

5 1.0000 PC Q76-15222-06417 A76-15222-06417 CABLE;AC-

CORD;W/POLYBAG;LENGTH:152cm;AWG:18;VERSION;UL;SPEC.NO:0
6417

(UL)

6 1.0000 PC Q76-00000-05305 A76-00000-05305 CABLE;AC-CORD;3;BR;1500 MM;Plug + Connector:375+730;H05VV-F

3G0.75

(BR)

7 1.0000 PC Q76-15212-03119 A76-15212-03119 CABLE;AC-CORD;W/POLYBAG;LENGTH:152cm;H05VV-F 3G

0.75MM2;VERSION;EU;SPEC.NO:03119

(EU)

8 1.0000 PC Q76-00000-13573 A76-00000-13573 CABLE;AC-CORD;3;AR;1500 MM;Plug + Connector:321+730;H05VV-F

3G0.75

(AR)

Connector

Quantity Unit S.Sku M.Sku Description Reference Designators Notes

1 R95-00001-61064 B95-00001-61064 OEM;CONNECTOR;XLR;POLES:3;XLR SOCKETS;CT3-12FAP-

EP;A.K.G.W.0020007

[EXTRA SPARE]

2 R80-00001-61069 B80-00001-61069 OEM;SPEAKON;SPEAKON SOCKET;HP-01-EP;A.K.S.L.0000010 [EXTRA SPARE]

Led

Quantity Unit S.Sku M.Sku Description Reference Designators Notes

1 U10-00001-61077 E10-00001-61077 OEM;LED HIB;3mm0 ROUND;GREEN;LED (GREEN);NO

RING;304GD/06;A.A.P.0003.G105

[EXTRA SPARE]

2 U10-00001-61074 E10-00001-61074 OEM;LED HIB;3mm0 ROUND;YELLOW;LED (YELLOW);NO

RING;304YD/06;A.A.P.0003.Y104

[EXTRA SPARE]

3 U10-00001-61076 E10-00001-61076 OEM;LED HIB;3mm0 ROUND;RED;LED (RED);NO

RING;304VD/06;A.A.P.0003.R102

[EXTRA SPARE]

4 U10-00001-61078 E10-00001-61078 LED HIB;3mm0 ROUND;WHITE;OEM;LED (WHITE);NO

RING;KN030RRDWW1WB-Z;A.A.P.0003.W309

[EXTRA SPARE]

Parts ListKM750

Page 10

Plastic Part

Quantity Unit S.Sku M.Sku Description Reference Designators Notes

1 W52-00001-64901 G52-00001-64901 PLASTIC;KNOB;P0BRI;ABS [EXTRA SPARE]

2 W57-00001-64900 G57-00001-64900 PLASTIC STACK;TERMINAL;P0BRI;ABS;PLASTIC;RED BLACK;WIRING

TERMINAL

[EXTRA SPARE]

Plug Socket

Quantity Unit S.Sku M.Sku Description Reference Designators Notes

1 W67-00001-61070 G67-00001-61070 OEM;SOCKET;POLES:3;AC POWER SOCKET;RF-2004-

6.3C;A.K.D.L.0000011

[EXTRA SPARE]

2 W64-00001-61067 G64-00001-61067 OEM;PLUG;JACK;POLES:6;PITCH:6.35 MM;JACK SOCKET (1/4");LS-

2037;A.K.M.W.0000014

[EXTRA SPARE]

3 W68-00001-61066 G68-00001-61066 OEM;PLUG;RCA;POLES:3;JACK SOCKET (PHONO); RCA-207-EP-

01;A.K.L.W.0020006

[EXTRA SPARE]

Power Supply

Quantity Unit S.Sku M.Sku Description Reference Designators Notes

1 Z68-00001-61080 J68-00001-61080 OEM;TRAFO;TOROIDAL;P0BRI;MAINS TRANSFORMER;DT6001-

310A/A1;A.B.Y.A.F411101

[EXTRA SPARE]

Potentiometer

Quantity Unit S.Sku M.Sku Description Reference Designators Notes

1 Y03-00001-61072 I03-00001-61072 OEM;POTENTIOMETER;50 kohm;0W125;TAPER:B;20

%;MONO;PITCH:5 MM;RV16AF-30-25K-B50K­3F;A.W.5C.A.503AD31G1;41CC;METAL;SHAFT 25MM;

[EXTRA SPARE]

Switch

Quantity Unit S.Sku M.Sku Description Reference Designators Notes

1 Y84-00001-61060 I84-00001-61060 OEM;SWITCH;ROCKER;2P;1T;LOCKING;NONSHORT;4L;ON/OFF

POWERSWITCH;RF-1004-NBBG8G1X;A.H.DS.0000027

[EXTRA SPARE]

Parts ListKM750

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