User guide

Opening and Closing Forum 523/524 37

Installation

To check the internal Light Emitting Diodes (LEDs) or connect tel-

ephone sockets, terminals or network connections, open the

Forum 523/524 as far as the plate:

1. Pull the plug out of the power socket in the wall.

Push up the cover

2. Push the cover open using light pressure until the connector

panel can be seen. A stopper prevents the cover from being

opened further.

You must remove Forum 523/524’s cover completely if you

want to install it on a wall or install interface cards:

3. Pull the 3-pin AC cable out of the power supply. unit

4. Press down the power supply locking device.

Pressing down the power supply locking device