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OSC RMX 850 - User Manual

OSC RMX 850
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Technical Service Manual
RMX™ Series
RMX 850
RMX 1450
RMX 2450
*TD-000078-00*
TD-000078-00
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Summary

Introduction to RMX Series Amplifiers

QSC RMX Series Service Bulletins

List of service bulletins issued for QSC RMX Series amplifiers.

RMX Amplifier Service Bench Requirements

Essential tools and equipment needed for servicing RMX amplifiers.

Handling Surface-Mount Components in RMX Amps

Guidance on working with SMT components in RMX amplifiers.

QSC RMX Series Amplifier Overview

Description of the RMX Series amplifiers, including models and features.

RMX Amplifier Technical Descriptions and Theory

Detailed technical descriptions and theory of operation for RMX amplifiers.

Component Identification and Pinout

NE5532 AN Op Amp Pinout and Identification

Pin configuration for the NE5532AN dual operational amplifier.

LM13600 Transconductance Amp Pinout

Pinout details for the LM13600 dual operational transconductance amplifier.

LM311 Voltage Comparator Pinout Details

Pin configuration for the LM311 voltage comparator.

4 N29 Opto-isolator Pinout Diagram

Pinout diagram for the 4N29 opto-isolator.

Troubleshooting RMX Amplifiers

Troubleshooting Excessive Current Draw in RMX Amplifiers

Diagnosing and resolving issues related to excessive current draw.

RMX Amplifier Protection, Muting, and Delay Troubleshooting

Resolving problems with protection circuits, muting, and delays.

Troubleshooting RMX Faults with Signal Present

Addressing issues when the amplifier passes signal but malfunctions.

Diagnosing Instability and Oscillations in RMX Amplifiers

Identifying and fixing instability, noise, or oscillations.

RMX Power Supply and Rail Balancing Troubleshooting

Resolving power supply and rail voltage balancing issues.

RMX Calibration Procedures

How to Set Bias on RMX Amplifiers

Procedure for setting the bias on RMX amplifier channels.

Calibrating RMX Amplifier Current Limits

Steps to calibrate positive and negative current limiting.

Servicing RMX Amplifiers

RMX Amplifier Mechanical Disassembly Guide

Instructions for disassembling and re-assembling RMX amplifiers.

Replacement Parts

RMX 850 Component Replacement Parts List

List of replacement parts for the RMX 850 amplifier.

RMX 1450 Component Replacement Parts List

List of replacement parts for the RMX 1450 amplifier.

RMX 2450 Component Replacement Parts List

List of replacement parts for the RMX 2450 amplifier.

Schematics and Diagrams

RMX Assembly;Disassembly Diagram Part 1

Diagram showing RMX amplifier assembly and disassembly steps.

RMX Assembly;Disassembly Diagram Part 2

Second diagram for RMX amplifier assembly and disassembly.

RMX 850 Schematic Diagram: Channel 1

Schematic diagram for Channel 1 of the RMX 850 amplifier.

RMX 850 Schematic Diagram: Channel 2

Schematic diagram for Channel 2 of the RMX 850 amplifier.

RMX 850 Schematic Diagram: Power Supply

Schematic diagram of the RMX 850 amplifier's power supply.

RMX 1450 Schematic Diagram: Channel 1

Schematic diagram for Channel 1 of the RMX 1450 amplifier.

RMX 1450 Schematic Diagram: Channel 2

Schematic diagram for Channel 2 of the RMX 1450 amplifier.

RMX 1450 Schematic Diagram: Power Supply

Schematic diagram of the RMX 1450 amplifier's power supply.

RMX 850 Chassis Wiring Diagram

RMX 1450 Chassis Wiring Diagram

RMX 2450 Chassis Wiring Diagram

OSC RMX 850 Specifications

General IconGeneral
Channels2
Frequency Response20Hz-20kHz
Input Sensitivity0.775V
Input Impedance20kΩ Balanced / 10kΩ Unbalanced
ProtectionDC, thermal, short circuit, overload