I actually tried that with one local shop, and they
flat out said no. Its
quite possible that the Philips/Magnavox service docs can't be printed
(via normal means, anyway), but only viewed from those cdroms. If they can
be printed, its possible that the service shop has a limit as to how many
pages they can print (or even view) from those discs.
PDF files can be marked to prevent printing, although
I think it's down to the software to honour this.
Limiting the number of viewings seems a little
daft - I doubt that anyone does this!
Antonio