I use the SPX800 so I assume the menu operation is similar.
1. To access the full menu press and hold the menu button for at least 5 seconds until the menu appears, this should be the full system menu which is at least 3 or 4 pages. Selecting items is by pressing the rotary switch and changing values by rotating the switch.
2. The flip out LCD should come on when opened. If not check that the ‘save’ switch is not engaged.
Hope this helps.
Roddy Jamieson