ALLEN & HEATH Qu Series User manual

Qu Service Guide
DISTRIBUTOR USE ONLY!

Warranty
The Allen & Heath warranty policy is as follows:
If the unit fails within 30 days of receipt by the distributor, then A&H will offer
parts for repair. If the unit is DOA, then A&H will offer a replacement unit.
If the unit fails within 12 months of purchase by the end user, then A&H will offer parts free of
charge for repair by the distributor.
Component level repairs are not advised and are not supported on units within warranty.
For warranty enquiries, please contact [email protected] with the serial number, date of
purchase and required part number.
For part orders for spares stock and out of warranty repairs please contact our spares administrator
Fiona.[email protected]

Qu Disassembly

Bottom Panel
Remove the bottom panel to access the inside of the unit.

Disassembly
If removing the Fader PCB, remove all fader caps and position the faders
away from the edge to avoid catching.

Disassembly
Remove the front fader fixings when removing the fader PCB.

Disassembly
If removing the Surface PCB or replacing the screen, remove the rotary pots and nuts.

12v Fader Motor Supply
There is a separate 12 volt supply to the fader PCB to power the fader motors.

Changing the Screen
11
2
When changing the screen, disconnect the screen’s connection to the CPU
before removing PCB’s.

Changing the Screen
Lift the CPU PCB upwards to remove, as connectors are placed between the
CPU and Audio PCB.

Changing the Screen
Once the CPU is removed, remove the Surface PCB.
Pillars labelled Pillar Plus Nyloc do not need to be removed.
Pillars labelled Pillar Only must be removed.

Changing the Screen
Unclip the screen from the Surface PCB and separate the screen and bezel.
Please note: The adhesive pad protectors on the back of the screen should
not be removed. The screen should not be stuck to the Surface PCB.

Channel LED’s
On Qu-24 and Qu-32 models, LED lights are mounted on the Fader PCB and
a rubber mat is placed between the Fader PCB and metalwork.

Channel LED’s
When replacing the Fader PCB, make sure the rubber mat is sat correctly to avoid pinching.

Qu Diagnostics

Routing Overview –Qu16
PSU
Audio
Connector
CPU
Fader
Surface
Headphone Screen
+7.5V
+7.5V
+7.5V
+15V
-15V
Mix Sel
Power
+3V3
AG8700
AG8838
AG8890
AG8891
AG8892
AG8904
AG8925
AG8904

Routing Overview –Qu16
Audio
Connector
CPU
Fader USB B
/Network DSnake
Surface
Headphone Screen Mix Sel
Control Audio Ethernet USB
AG8977
AG8838
AG8890
AG8891
AG8892
AG8904
AG8925
AG8904
AG9146

Routing Overview –Qu32
DC-DC
Audio Ext
Connector
CPU
Fader
Surface
Headphone Screen Mix Sel
Connector Ext
Audio
PSU
Mains Inlet
Surface Ext
Fader Ext
+12V
+12V
+12V
+3V3
+12V
Power
AG9459
AG9460
AG8892
AG9474
AG9461
AG9465AG9466
AG9471 AG9472
AG9483 AG9484
AG9534
AM9504AG9294
+12V
+7.5V
+15V
-15V

Routing Overview –Qu32
DC-DC
Audio Ext
Connector Ext
CPU
Fader Network
Surface
Headphone Screen Mix
Connector
Audio
Mains Inlet
Surface Ext
Fader Ext
Power
Good
Control Audio Ethernet USB
AG9459
AG9460AG8892
AG9474
AG9461
AG9465
AG9466
AG9471 AG9472
AG9483 AG9484
AG9534
AG9294 AG9334

Diagnostics
A number of LEDs are placed on both the inside and outside
of the console to help monitor activity and power.
The blue LED on the rear of the unit should be on solid. If this
is off, there will be an issue relating to power.
The yellow LNK LEDs by the Network and dSnake ports should
flash when a connection is made.