LEM PROCON 750 User Manual

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Index
Soldering point.
Male connector.
Female connector.
M/F faston connector.
Test point.
Supply voltage. Logic supply ground.
Analog supply ground.
Chassis ground.
Earth ground.
Flag joined with one or more flags
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PROCON 400 Test Procedure2
PROCON 750 Test Procedure2
PROCON 950 Test Procedure
4
4 PROCON 1500 Test Procedure
5
PROCON 1250 Test Procedure
Spare Part List
3
PROCON 1100 Test Procedure
PROCON 400 Schematic
PROCON 750 Schematic
PROCON 950 Schematic
PROCON 1500 Schematic
PROCON 1250 Schematic
PROCON 1100 Schematic
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with the same signal name inscribed.
ATTENTION Observe precautions when handling electrostatic sensitive devices.
Notice
Service must be carried out by qualified personnel only. Any tampering carried out by unqualified personnel during the guarantee period
will forfeit the right to guarantee.
For a correct operation of the instrument, after having switched off, be careful to wait at least 3 seconds before switching on again.
To improve the device's specifications, the schematic diagrams may be subject to change without prior notice.
All components marked by this symbol have special safety characteristics, when replacing any of these components use only
manufacturer's specified parts.
The (µ) micro symbol of capacitance value is substituted by U.
The (
Ω) omega symbol of resistance value is substituted by E.
The electrolytic capacitors are 25Vdc rated voltage unless otherwise specified.
All resistors are 1/8W unless otherwise specified.
All switches shown in the "OFF" position. All DC voltages measured to ground with a voltmeter 20KOhm/V.
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SERVICE MANUAL
code 270266

LEM PROCON 750 Specifications

General

Channels	2
Power Output	750W
Signal to Noise Ratio	>100dB
Damping Factor	>200
Power Output (8 Ohms)	2 x 250W
Power Output (4 Ohms)	2 x 375W
Frequency Response	20Hz - 20kHz
Weight	15 kg

Summary

PROCON 400 Test Procedures and Adjustments

PROCON 400 Precautions and Visual Check

PROCON 400 Supply and Channel Checks

PROCON 750 Test Procedures and Adjustments

PROCON 750 Precautions and Visual Check

PROCON 750 Supply and Channel Checks

PROCON 950 Test Procedures and Adjustments

PROCON 950 Precautions and Visual Check

PROCON 950 Supply and Channel Checks

PROCON 1100 Test Procedures and Adjustments

PROCON 1100 Precautions and Visual Check

PROCON 1100 Supply and Channel Checks

PROCON 1250 Test Procedures and Adjustments

PROCON 1250 Precautions and Visual Check

PROCON 1250 Supply and Channel Checks

PROCON 1500 Test Procedures and Adjustments

PROCON 1500 Precautions and Visual Check

PROCON 1500 Supply and Channel Checks

Schematics Overview

PROCON 400 Schematic

Circuit diagram for the PROCON 400 amplifier model.

PROCON 750 Schematic

Circuit diagram for the PROCON 750 amplifier model.

PROCON 950 Schematic

Circuit diagram for the PROCON 950 amplifier model.

PROCON 1100 Schematic

Circuit diagram for the PROCON 1100 amplifier model.

PROCON 1250 Schematic

Circuit diagram for the PROCON 1250 amplifier model.

PROCON 1500 Schematic

Circuit diagram for the PROCON 1500 amplifier model.

Schematic Diagrams by Module

HGB768011 Input, Protection & Supply Board

Schematic for the input, protection, and supply board.

HGB768004 475W Amplifier Module

Schematic for the 475W amplifier module.

HGB768000 Input, Protection & Supply Board

Schematic for the input, protection, and supply board.

HGB768013 200W Amplifier Module

Schematic for the 200W amplifier module.

HGB768002 Display Board

HGB768003 CH2-475W Amplifier Module

Schematic for the CH2-475W amplifier module.

HGB768008 CH1-825W Amplifier Module

Schematic for the CH1-825W amplifier module.

HGB768010 CH1-750W Amplifier Module

HGB768012 Input, Protection & Supply Board

Schematic for the input, protection, and supply board.

HGB768007 CH2-825W Amplifier Module

Schematic for the CH2-825W amplifier module.

HGB768009 CH2-750W Amplifier Module

HGB768014 375W Amplifier Module

Schematic for the 375W amplifier module.

768272 Soft Start Board

HGB768006 CH1-550W Amplifier Module

Schematic for the CH1-550W amplifier module.

HGB768005 CH2-550W Amplifier Module

Schematic for the CH2-550W amplifier module.