ALLEN & HEATH AR84 User manual

ALLEN&HEATH AR84 AR2412 service manual_1 1
Copyright©2012Allen&HeathLimited.Allrightsreserved

Allen&HeathLimited

KernickIndustrialEstate,Penryn,Cornwall,TR109LU,UK

ALLEN&HEATH
Service manual
AR84
AR2412

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Contents
3Warranty
4Precauons
5Tesngandpartidenficaon
6AR84Serviceaccess
7AR84RemovecommsPCB
11AR84Re‐assemble
13AR2412Serviceaccess
15AR2412RemovecommsPCB
18AR2412Re‐assembly
19AR2412ReadyLED

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Limited One Year Warranty
This product is warranted to be free from defects in materials or workmanship for period of one
year from the date of purchase by the original owner. To ensure a high level of performance and
reliability for which this equipment has been designed and manufactured, read this User Guide be-
fore operating. In the event of a failure, notify and return the defective unit to ALLEN & HEATH
Limited or its authorised agent as soon as possible for repair under warranty subject to the follow-
ing conditions
Conditions of Warranty
The equipment has been installed and operated in accordance with the instructions in this User
Guide. The equipment has not been subject to misuse either intended or accidental, neglect, or
alteration other than as described in the User Guide or Service Manual, or approved by ALLEN &
HEATH. Any necessary adjustment, alteration or repair has been carried out by ALLEN & HEATH
or its authorised agent. This warranty does not cover fader wear and tear. The defective unit is to
be returned carriage prepaid to ALLEN & HEATH or its authorised agent with proof of purchase.
Units returned should be packed to avoid transit damage. In certain territories the terms may vary.
Check with your ALLEN & HEATH agent for any additional warranty which may apply.
For further assistance please contact our distributor or your territory.

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Servicing Precautions – General Notes
Service personnel:
Service work should be carried out by technically qualified service personnel
only. Mains power is dangerous and can kill. Do not attempt to work on a line-
ar or switched mode power supply if you are not suitably qualified to do so. Do
not attempt to repair surface mount circuit assemblies unless you are suitably
qualified and have the necessary facilities to do so. Replacement circuit as-
semblies can be ordered.
Service facilities:
Ensure a suitably sized work surface is available. Ensure this is clear of dirt,
debris and obstructions which may damage the equipment surfaces. Ensure
adequate lighting. Use the correct tools for the job and ensure they are in good
working order. Ensure all workshop safety requirements are adhered to.
Service information:
Check that you have all the information you need before starting the service
job. Refer to the Allen & Heath web site or contact Allen & Heath technical
support for details on the latest information. Full technical information can be
downloaded from the web site Distributor Zone (password required).
Mains power:
Connect the equipment to mains power only of the type described in the user
guide and marked on the rear panel. The power source must provide a good
ground connection. Ensure you always use an isolation transformer when
working on any mains power supply unit.
Mains cord and fuse:
Use the correct power cord as supplied with the equipment. Do not remove or
tamper with the ground connection in the power cord. Heed the Important
Mains Plug Wiring Instructions printed in the user guide if it is necessary to re-
wire the mains cord. Always replace the equipment mains fuse with the correct
type and rating as described in the user guide and marked on the equipment
panel.
Opening the unit:
Switch off and remove the mains power cord before opening the equipment.
Ensure all power supply covers and safety shields are in place before applying
power with the unit open for diagnostic fault finding.
Closing the unit:
Before finishing, check the quality and accuracy of the service work carried out.
Remove any dirt or debris as this may cause equipment failure in the future.
Ensure all assemblies, harnesses and connectors are correctly aligned and
plugged in. Ensure that jumper settings and control configurations are correctly
set according to the requirements of the customer.
Continued -

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Testing the unit:
Before operating the equipment, read and adhere to the Important Safety In-
structions printed in the user guide. Test that the service work has been suc-
cessfully carried out.
Shipping the unit:
Use adequate packing such as the original packaging or purpose designed
flight case if you need to ship the unit. To avoid injury to yourself or damage to
the equipment take care when lifting, moving or carrying the equipment.
Operation:
To test the console make sure it is connected as described in the user guide.
Check that the voltage setting marked on the rear panel is correct for the local
mains supply.
Fault finding:
For effective fault diagnosis trace the signal flow through the circuit path. Re-
fer to the system block diagram. Replacement circuit assemblies are available
from Allen & Heath.
Schematics:
Allen & Heath do not publish schematics that contain digital audio and control
circuitry.
Parts Identification
A Parts Identification document is published separately on the Technical Re-
sources tab available when logged in as a distributor.

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Removecoverscrews
Removecover

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Protectpaint
RemoveRJ45clip

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RemovePCBscrew
RemoveRJ45screws

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RemoveiDRRackCommsPCB

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Disconnectconnector
Cablee

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Re‐assemble
Placecableeovermounngpillar
LineupLED

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ALLEN&HEATH AR84 AR2412 service manual_1 13

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DisconnectDCharness

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RemoveRJ45clipsx3

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RemoveRJ45screws
RemovePCBscrews

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ALLEN&HEATH AR84 AR2412 service manual_1 18

ALLEN&HEATH AR84 AR2412 service manual_1 19
TheReadyLEDisfiedtoallI/OPCBs.ItisnotusedonO/P1&5
andisbentup,insidethechassis.