I recently bought the Astone A108 media player with inbuilt Android 4.0.4 operating system. This meant I could surf the web on my big screen tv. My problem was the 'remote control' sized qwerty keyboard (Astone R3) air mouse was too small to use efficiently. Our local Dick Smiths (Australia) was selling the Logitech K400R 'full sized' wireless keyboards for only $50.
All was going well but every time I pressed the letter 'e' it would open a email setup program. B opened a browser and P open the media player. The physical keyboard would then become useless as no characters were appearing on the screen and I would have to use the frustrating 'Android Keyboard' (the whole point of buying the Logitech keyboard was to forget the on screen input method). This is well documented as an issue but everyone is saying 'you must be pressing the search button' (accidentally). This definitely wasn't the case for me. It is really annoying as I would have to power down the Astone A108 media player and that somehow reset the 'keyboard shortcuts'. All the forums are written for mobile phones using Android 4.0.4 and telling you to go to settings, applications and turn off the quick launch (not helpful to me as it didn't exist anywhere in my menus).
To make things worse the Logitech support site only has a 'quick setup guide' for the older model K400 (no 'R'). The keys along the top of the model K400R are slightly different and you can probably guess what they do by looking at the icons on the keys i.e. volume mute, volume down and volume up. When I rung Logitech support they were no help and advised me to install their software 'Logitech Setpoint' to customise my keys.
The point for my post? I found the solution and thought I would share with you. There are two keys 'F1' and 'F2'. There is a symbol of a box with an arrow going 'in' and one going 'out'. I found that when the email program was opening after pressing the letter 'e', all you have to do is press 'F1' and that turns off the keyboard shortcuts returning you to the normal keyboard input method.
I saw a Google app called 'Null Input Method' which I will try next to see if that removes the Android (on screen) keyboard and I will be in heaven.
cheers,
Ray