The login used by the 58xx and 78xx is completely different than the 6505 that is working.
The 58xx has a leading \ in the Document path that needs to be removed (On newer machines this is added automatically, so by putting it in the path it becomes a \\, which in turn implies a folder with no name, which will cause a login error)
The 7845 is using port 139, which implies old firmware that starts with 071, which will not work for smbv2 or 3. Update it to the latest here.