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Meyer Sound MP-4 User Manual

Meyer Sound MP-4
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Self-Powered Concert Series
Service Manual
MP-2/4 Amplifier
Doc #: 05.033.040.01
Rev.: A
Date: 08/31/98
Page: 1 of 26
© 1998 Meyer Sound Laboratories, Inc. All rights reserved.
Self-Powered Concert Series
MP-2/4 Amplifier
Service Manual
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Meyer Sound MP-4 Specifications

General IconGeneral
BrandMeyer Sound
ModelMP-4
CategoryAmplifier
LanguageEnglish

Summary

Introduction

Pre-Service Checks and Precautions

MP-2/4 Amplifier System Description

MP-2 Exploded View Diagram

Shows exploded view and parts list for MP-2 amplifier modules.

MP-4 Exploded View Diagram

Shows exploded view and parts list for MP-4 amplifier modules.

Block Diagram Description

Explains the user panel, AC mains board, and RMS communications board.

TPL Control Board Details

Details signal processing stages and TruPower™ Limiting on the TPL Control Board.

Power Supply Module Function

Describes power supply module functions, fan control, and unmute circuitry.

Amplifier/Heatsink Module Operation

Explains audio signal path, amplifier/heatsink module, and output stage.

Troubleshooting Flow Chart

Common Failure Modes

Circuit Breakers Trip (2-Channel)

Troubleshooting steps for circuit breakers tripping in 2-channel versions.

Circuit Breakers Trip (4-Channel)

Troubleshooting steps for circuit breakers tripping in 4-channel versions.

Unit Does Not Power Up

Steps to diagnose and fix units that do not power up.

Powers Up and Shuts Off

Troubleshooting for units that power up and shut off immediately.

Powers Up, No Signal Pass

Steps to troubleshoot units that power up but do not pass signal.

Powers Up, No Active LED/Signal

Diagnosing units that power up with no active LED and no signal.

Cyclical Power On/Off

Troubleshooting units exhibiting cyclical power on/off behavior.

No or Intermittent Signal

Steps for units that turn on but have no or intermittent signal.

Unit Hums or Has Noise

Diagnosing and resolving hum or noise issues in the unit.

Output Degrades When Paired

Addresses issues where unit output degrades when connected with other units.

Unit Has Distorted Output

Steps to troubleshoot units with distorted audio output.

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