ALLEN & HEATH Xone:22 User manual

ALLEN&HEATH Xone:22 service manual AP7528_3 Page - 1 - of 12
ALLEN&HEATH
SERVICE MANUAL
Copyright © 2009 Allen & Heath Limited. All rights reserved
Allen & Heath Limited
Kernick Industrial Estate, Penryn, Cornwall, TR10 9LU, UK
http://www.allen-heath.com
XONE:22

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Release notes for this issue
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 before 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 following 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.
http://www.allen-heath.com/UK/distributors.asp

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CONTENTS
DEVELOPMENT CHANGES
SERVICING PRECAUTIONS AND GENERAL NOTES
ACCESS
CHANGE PHONO INPUT TO LINE INPUT
PARTS IDENTIFICATION
•How to order parts
•Exterior parts
•Interior parts
SOFTWARE & FIRMWARE
SPECIFICATION

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DEVELOPMENT CHANGES
NOTE: These changes have been implemented at the factory as part of our ongoing
development policy.
They are not critical to the basic function of the unit.
It is for the owner / service engineer to decide to update a unit with development changes.

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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 linear 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 assemblies 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 rewire 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 Instructions
printed in the user guide. Test that the service work has been successfully 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. Refer to the
system block diagram. Replacement circuit assemblies are available from Allen &
Heath.

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ACCESS
Tools required: T10 and a T8 Torx screwdriver.
1. Ensure that the power supply has been turned off and disconnected from the unit.
2. Using the T8 driver remove the three screws that are located in the centre of the channel
input and FX loop connectors (see illustration).
3. Using the T10 remove the 8 screws that hold the front panel to the chassis.
4. Now carefully lift the front edge of the panel up until the PCBs clear the chassis and pull the
whole assembly forward slightly until the connectors at the rear are free from the chassis.
You can now lift the front panel up to gain sufficient access to replace the faders or change
the jumper link settings. Reassembly is a reverse of this procedure.
5. Take great care to ensure that no harnesses become trapped and that all connectors are fully
pushed home. Replace the screws and test the mixer for correct operation.
REMOVE THE SCREWS ARROWED

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CHANGE PHONO INPUT TO LINE INPUT
1. Remove the front panel as outlined before.
2. locate and remove the two black jumper links on the input PCBs in the location shown.
It is a good idea to leave the jumper links attached to one pin so that they can be refitted at a future
date.
Remove these two jumper links (JP1 and JP2) for
each channel that you want to convert to line.

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How to order parts
Parts must be ordered from our distributor in your territory. A list of international distributors can be viewed
at http://www.allen-heath.com/UK/distributors.asp
UK parts must be ordered through an appointed A&H dealer or service centre. A list of UK service centres
can be viewed at http://www.allen-heath.com/UK/service_centres.asp
PARTS IDENTIFICATION
EXTERIOR PARTS
AJ7305
A
I8006
AJ7304
A
I8007
AJ5320
Channel fader
003-897
Crossl fader
003-876
AJ7304
A
I8007
AJ7304
A
I8007
AJ7305
A
I8006
AJ7305
A
I8006
AJ7464
S
q
uare red

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AJ4346
A
I8004
Mix out XLR
Al2411
RCA phono
AL3753
Ground
Pillar
AL8106
Mic XLR
AL2414
Headphone
Large jack
AL0328
Headphone
Small jack
AL5323
RCA phono
AL4977
Phono shorting plug
AL4396
AJ4346
A
I8007

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INTERIOR PARTS
Input 003-873
Master 003-874
Mic is break off
Connector 003-875

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SPECIFICATION
Connections
Inputs
Connection Impedance Nominal Level Maximum Level
Phono RCA 47K/330pF 7mV-100mV
Line RCA 20K ohm -10 to +18dBu
FX RTN RCA 10K ohm 0 to +18dBu
Mic XLR <2K ohm -42 TO –12dBu
Outputs
Main Mix Balanced XLR 68 ohms +4dBu +25dBu
Monitor RCA 68 ohms -2dBu +18dBu
Record RCA 600 ohms -10dBV +10dBV
FX SND RCA 47 ohms -2dBu +18dBu
Headphones 3.5mm and
1/4” TRS Jacks
1 ohm 200mW RMS into
30 ohms
Performance
Distortion Main Mix out +10dBu 0.002% THD+N
Noise 22-22Khz Main Mix out unity -84dBu un-weighted
Fader shut off Channel fader >-74dB
Xfade shut off Xfader >-80dB
Frequency
Response
10Hz to 30kHz +0/-3dB
Weight 2.2kg (5.5lb)
Weight Packed 3.5kg (8.0lb)