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ALLEN & HEATH SQ

ALLEN & HEATH SQ
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SQ Service Guide
DISTRIBUTOR USE ONLY!
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ALLEN & HEATH SQ Specifications

General IconGeneral
TypeDigital Mixer
Channels48
Effects8 stereo FX engines
TalkbackYes
Sampling Rate96kHz
Expandable ChannelsUp to 48 local + 48 remote
Local Outputs16
Digital OutputsAES3
EQ Bands4-band parametric
Effects Racks4
ConnectivityEthernet, USB
USB Audio Interface32x32
Built-in InterfacesSLink
Screen7-inch touchscreen
SoftwareSQ MixPad
Power SupplyInternal
Weight10.5 kg

Summary

Warranty

SQ Disassembly

Bottom Panel Access

Instructions for accessing the unit's interior by removing the bottom panel.

Fan Removal Procedure

Steps to disconnect and remove fans, including unclipping connections.

12 V Fader Motor Power Supply Details

Explanation of the dedicated 12-volt supply for fader motors and its regulation.

Fader PCB Service and Testing

Guidance on removing and testing individual fader PCBs and motors.

Fader Motor Wiring Connections

Reference for connecting fader motors, including wire reuse guidelines.

TFT Screen Connection Details

Information on the two separate cables for TFT screen touch and display.

TFT Screen Mounting Procedure

Guidance on mounting the screen, reusing components, and handling adhesive pads.

LCD Mounting and PCB Interaction

Details on LCD PCBs and how issues on one can affect others.

LCD Bezel Mounting Considerations

Notes on the LCD bezel's material and potential issues during mounting.

SQ Diagnostics

Power Distribution Diagram

Schematic illustrating power flow between different components of the SQ unit.

Signal Routing Overview

Diagram detailing audio, control, USB, and Ethernet signal paths.

4-Channel LCD Screen Overview

Explanation of the 4-channel LCD screens and their control signals.

General Diagnostics and LED Indicators

Information on using LEDs, power rails, and routing overviews for diagnostics.

CPU Board LED Status

Explanation of LEDs on the CPU board and their diagnostic meanings.

DSP FX Board LED Status

Explanation of LEDs on the DSP FX board and their diagnostic meanings.

Fader Board LED Status

Explanation of LEDs on the Fader board and their diagnostic meanings.

Fader Motor Test Point Guide

Instructions for testing the 5V supply for fader motors using specific test points.

Firmware and Reset Procedures

Performing a Hard Reset

Instructions for clearing mix settings and saved data by holding specific keys.

Forced Firmware Reinstallation Process

Steps for reinstalling firmware using a USB drive and specific key combinations.

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