L-Acoustics LA4X Maintenance Manual
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L-Acoustics LA4X Maintenance Manual

Level 1, amplified controller
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LA4X
maintenance manual – level 1 (EN)

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Summary of Contents for L-Acoustics LA4X

  • Page 1 LA4X maintenance manual – level 1 (EN)
  • Page 2 Contents Document reference: LA4X maintenance manual - level 1 (EN) version 2.0 Distribution date: March 20, 2017 © L-Acoustics. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means without the express written consent of the...

  • Page 3: Table Of Contents

    Contents Contents Safety instructions Symbols Revision history Introduction Equipment and tools Quality Control Troubleshooting and diagnosis Diagnosis table ......................... 10 Exploded view .......................... 16 Working time ..........................16 Disassembly and Reassembly procedures D/R 001 – REAR BRACKETS ....................... 17 D/R 002 – SIDE BRACKETS ......................18 D/R 003 –...

  • Page 4: Safety Instructions

    An apparatus showing any sign of issue must immediately be put aside and withdrawn from use. Contact L-Acoustics for advanced maintenance. Any unauthorized maintenance operation will void the warranty. Before sending a product to L-Acoustics for maintenance, save all user presets to files using LA Network Manager. Symbols The following symbols are used in this document: This symbol indicates a potential risk of harm to an individual or damage to the product.

  • Page 5: Revision History

    Revision history Revision history Document identification Distribution date Modifications LA4X_MM1_EN_1.0 June 10, 2014 Initial version LA4X MM1 EN version 2.0 March 20, 2017 - Added D/R 004 bis – FRONT HANDLE - Updated Exploded view - Updated Appendix: KR list...

  • Page 6: Introduction

    Introduction Introduction This manual is intended for end users and gathers the level 1 procedures. This manual contains the maintenance operations authorized for the end users. Performing another operation exposes to hazardous situations. Diagnosis table This section contains the diagnosis tables and procedures to identify the issues and how to address them. Exploded view This illustration gives an overview of the order in which the elements must be disassembled and reassembled.

  • Page 7: Equipment And Tools

    Equipment and tools 1 Equipment and tools The following table is the complete list of equipment and tools required to perform all level 1 maintenance procedures on the LA4X amplified controller. Equipment and tools Reference Manufacturer audio source with a known musical program —...

  • Page 8: Quality Control

    Launch LA NWM. c. Verify if the controller can be put in online mode (refer to the LA NWM video tutorial). Verify if the latest version of firmware is installed (see the LA4X user manual or the LA NWM video tutorial).
  • Page 9 Quality Control There is a risk of ear damage due to high sound level. Use ear protections. To verify the power capability of each output channel follow these steps: a. Plug the audio source to an input connector of the controller (IN A, IN B, IN C or IN D). b.

  • Page 10: Troubleshooting And Diagnosis

    D/R 003. environments operation in very dusty or Inside of the controller dirty cracked-oil smoke machine Contact L-Acoustics ® (visible from the GRILL) environments Replace the FOAM FILTER, see procedure FOAM FILTER lost or damaged mechanical shock D/R 003.
  • Page 11 POWER CORD If necessary, replace it, use damaged AMPCORDONCE, AMPCORDONCN, or AMPCORDONUS. other cause Contact L-Acoustics ® controller connected to a Unplug all cables from the L-NET non-compatible network connectors and restart the controller. Put the controller in a non-condensing...
  • Page 12 L-NET cable damaged cables of the network chain from the controller to the computer. more than two software clients are already Disconnect all other software clients. connected to the controller firmware failure Restart the controller. other cause Contact L-Acoustics ®...
  • Page 13 (refer to the Presets Guide, enclosures, or controllers user manuals). ® other cause Contact L-Acoustics Verify that nothing causes a short-circuit at the “Error on Channel x short-circuit in loudspeaker or controller outputs (wrong cabling scheme, Channel Muted”...
  • Page 14 FAN blades blocked “System Message from moving, if so push the cable away, see Fan blocked” procedure D/R 003. ® Contact L-Acoustics mains failure Inspect the mains. Unmute the outputs. outputs muted If the fallback mode is ON, switch it OFF.
  • Page 15 Replace the SpeakON cable. damaged If only one loudspeaker is connected, inspect it. loudspeaker damaged Otherwise, go to next step. ® Contact L-Acoustics other causes Sound only available in AES/EBU analog Contact L-Acoustics ® Sound only available in...

  • Page 16: Exploded View

    Troubleshooting and diagnosis Exploded view The following exploded view represents the external MODULES of the LA4X. Each MODULE is indicated by a circled number. The orange lines represent the disassembly/reassembly (D/R) order. Refer to the table below for more information.

  • Page 17: Disassembly And Reassembly Procedures

    Figure 1: Removing the REAR BRACKETS Reassembly procedure This procedure describes how to mount the REAR BRACKETS kit to an LA4X amplified controller. Insert the two REAR BRACKETS pushing on them until they are locked, see Figure 2. Figure 2: Mounting the REAR BRACKETS...

  • Page 18: D/R 002 - Side Brackets

    Remove the SIDE BRACKET from the controller. Repeat these steps for the other SIDE BRACKET. Reassembly procedure This procedure describes how to mount a SIDE BRACKETS kit to an LA4X amplified controller. Position a SIDE BRACKET on the controller. Drive four Torx ®...

  • Page 19: D/R 003 - Grill And Foam Filter

    If the FOAM FILTER is intended to be cleaned, use mild dishwashing detergent or soap and then dry it. Reassembly procedure This procedure describes how to mount a GRILL kit and a FOAM FILTER kit to an LA4X amplified controller. Place a FOAM FILTER into the GRILL.

  • Page 20: D/R 004 - Power Plug

    Disassembly and Reassembly procedures D/R 004 – Power plug Tools Name Reference Distributor wire stripping pliers 793936 Facom Stanley knife 0-10-018 Stanley screwdriver adapted to the new power — — plug Spare parts Description power plug Safety There is a risk of electrical injury when the high-voltage capacitors are charged. Before the maintenance operation, disconnect the POWER CORD from the mains and from the controller.

  • Page 21: D/R 004 Bis - Front Handle

    Description front handle M3.5x12 Torx screw Disassembly procedure This procedure describes how to remove the FRONT HANDLE from an LA4X amplified controller. 1. Undo the two Torx ® screws from the locations indicated in Figure 6. Use the electric screwdriver with the Torx ®...

  • Page 22: Glossary

    Glossary Glossary Europe China disassembly/reassembly Replacement Kit LA NWM La Network Manager remote control software MODULE part of an amplified controller, written in uppercase characters newton meter, international torque unit, 1 N.m = 9 in.lb United States...

  • Page 23: Appendix: Kr List

    Appendix: KR list Appendix: KR list Related KR contents Associated Reference MODULE (fixing material and cables included) procedure AMPCORDONCE 1 CE version power cord AMPCORDONCN POWER CABLE 1 CN version power cord AMPCORDONUS 1 US version power cord G03255 FRONT HANDLE 2 front handles D/R 004 bis KR LA4XEQAV...
  • Page 24 L-Acoustics, an L-Group Company 13 rue Levacher Cintrat – 91460 Marcoussis – France +33 1 69 63 69 63 – info@l-acoustics.com www.l-acoustics.com L-Acoustics GmbH L-Acoustics Ltd. L-Acoustics Inc. Steiermärker Str. 3-5 PO. Box Adler Shine - Aston House 2645 Townsgate Road, Suite 600...

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