Baslinux mailing list

[sindi keesan <keesan AT sdf.lonestar.org>]

> > > > > > QMS finally called back while I was here and explained that the flash rom
> > > > > > (eeprom?) on the 'controller' (motherboard) is bad ('image checksum
> > > > > > error') and no, we can't solder in a new one with a soldering iron, but I
> > > > > > can buy a replacement controller.  They named two wholesalers.
> > > > >
> > > > > Ahhhh... this explains much.  Though, I would bet that you could
> > > > > replace it with a sufficiently skilled touch.  However, you'd probably
> > > > > need to find another printer of the same model first, from which you
> > > > > could download the contents of the flash, to program the new one before
> > > > > soldering it into place.
> > > >
> > > > They implied that it could not be soldered by hand. But my partner fixed
> > > > three dead motherboards by replacing capacitors and two of them still
> > > > work.  I thought the rom (is this the CMOS?) is usually socketed.
> > >
> > > It might be socketed (EPROM & EEPROM often are), but if it's plain ROM
> > > or flash, then most likely, it's surface-mount soldered, which can be
> >
> > They said it was flash rom.  The only two things on the board which don't
> > appear to be surface soldered are the lithium battery and a VALOR FL1012
> > which has something to do with ethernet.

Would a dead lithium battery also produce an image checksum error?

> > What would the flash ROM look like?  These other chips look connected by
> > metallic spiderweb.
> [SNIP]
>
> Pretty much like any other plastic chip package, unfortunately.  I'd
> suggest that it's more likely to be one of the larger packages.  You
> may need to start checking part numbers against Google, if you're
> serious about replacing it.

Thanks, that is how I identified the ethernet controller chip that is not 
soldered.  I wonder if QMS would provide software to flash it.

> Anthony Albert