Allen&Heath GL4000 SERVICE MANUAL - Manual (Page 27)

Allen & Heath AP2794 issue 3 3
INSTALLATION
Only technically competent personnel should attempt to fit the expander module.
Disconnect the Power Supply Unit and cables from the console before fitting the
expander module
3. Ensure you have a good work surface and clear area before starting work. Carefully invert the console and
remove the base panel by removing all screws along the edges of the base panel. Also remove the 3 screws
in the centre of the large base panel. Note; do not rest the console on the meterbridge.
4. Remove the side trim and bracket from the side of the console that is to have the expander fitted. Similarly;
remove the side trim and bracket from the side of the expander that is to be joined to the console.
Figure shows console to be expanded on right hand side