I've started a thread here:
[Link: avforums.com]

where we're trying to collect info on discrete codes for the Toshiba LCDs and confirm them for the different models. Direct input selection is now possible for several models. Discrete on/off work for some models, still trying to work them out for others. Several of the codes come from the .pdf listed above. Sompen, would be nice if you could try them out and report any results in my thread. Good luck!