bsmith has a Service Manual for the 5660/5670 that he has hosted temporarily on a mates site: www.mods4me.com/5600D_SM.pdf
would be cool if you could maybe get a hold of it and put whith the 5680/5690 one for any future users.
Thanks a lot from Spain too. It has been very usefull. Sometimes it seems that the web helps people to solve their problems, but we use to forget that it's only the way, and there are people out there helping us without asking nothing at all. Thanks one more time. Adios.