To switch off the screen saver on the Kenwood DMX5020DABS, there is no direct indication of a special "Screen saver" menu in the operating instructions. However, you can switch off the screen or put it into standby mode, which replaces the screen saver effect.

How to switch off the screen:
- Press the [MENU] button for longer than 1 second to switch the screen off.
- To switch the screen back on, simply touch the display.
- Alternatively, you can find settings for the backlight and possibly the display in the setup menu under "Display" to influence the screen saver or similar functions.

If your device is in demo mode (which can be similar to a screensaver), you can deactivate it this way:
- Tap [HOME], then tap the gear icon (Settings).
- Select "Display" and then "Demonstration".
- Switch off the demonstration.

To summarise: There is no explicit classic screensaver to switch off completely, but you can switch off the screen manually or deactivate the demo mode to avoid a permanent screen display. For more details, it is worth taking a look at the setup menu under Display settings.