Thanks for the reply, I have tried the JVC/Projector/DLAx commands in the Mega232list with no success. I have a null modem adapter and the Rx light on the projector flashes when I send the command.

The model I have is one of the first JVC DLA projectors, it has an external DVDO video processor that I have in the rack. I wouldn't think JVC would have the same command set for this model (it has only one input, the processor has several) as the current lineup with all the input commands etc. that are built-in to the projector.