Actually there are only IR discrete codes for the first 4 inputs, I have tried every input 5 code I could find and none of them work with this model. The other thing that sucks about this unit is that when using the HDMI input you do not have any other audio options, i.e. you have an DVI to HDMI cable running to the sharp and you want to use the built in speakers, well it aint gona happen, as the display only looks for audio via the HDMI input, unlike some plasmas that let you select a different audio input separate from the HDMI input.