Re: MZ-N505 (and others) Service Mode

On Tue, Jan 21, 2003 at 02:24:45PM +0100, Sebastian Hartmann wrote:
> HOW will one sony service or developer guy ever try to figure out if the
> data on the MD is exactly the same like the data on a PC, from which it has
> been uploaded to the MD? My thought is: there must be some way to exactly
> verify the _data_ on the MD, as simply verifying some checksum must not mean
> that the data is identical.

That sounds too complex.  It's more likely that if there is a problem that
leads to audible data corruption that can't be fixed by tuning the laser
etc, that just the whole circuits are replaced.

> I like very much to know what all the service options in the service mode
> stand for. Is there really NO one who is able to obtain some service manual
> or service sheet?

You can download the service manuals from minidisc.org.
 
> Wouldn´t it be possible, although there is no real official feature of
> transferring the data from the MD to the PC via USB, that it (the desired
> transfer), through a command, or a dialogue between the MDPlayer and some
> service software can be triggered?

Everything is possible.  So far we have no proof that the feature is not
included in the hardware.  However, I now know the commands to join and
split tracks, and to put the player into record mode (normal record), and
they are not supported by the MZ-N707.  So there appear to be some
limitations to the NetMD firmware.

Thanks,
Marcus

-- 
`Rhubarb is no Egyptian god.' GNU      http://www.gnu.org    [email protected]
Marcus Brinkmann              The Hurd http://www.gnu.org/software/hurd/
[email protected]
http://www.marcus-brinkmann.de/