I don't own or have access to a CF-73 myself, but came across this stuff when I was helping a friend find out some more information on this model. Since there was nothing here yet, I thought I would post what I found in case someone might find it useful.

Here is the service manual for the CF-73E mk1 model:
(From: http://www.eserviceinfo.com/download.php?fileid=30805)

Here is the Panasonic Canada support web site. It is better than the US support website for downloading drivers and such.
Just type CF73 in the Model Number field.

Here is the Panasonic Japan support web site. It is even bettter than the Canadian web site for finding drivers.

Thanks, and good luck!