problem with Lombard cache memory

[Ron Herfurth]

I just started getting the message when I start up my 333 MHz Lombard (OS
9):

"The built-in memory test has detected a problem with cache memory. Please
contact a service technician for assistance."

It still starts up and runs. Any one have any idea if that is referring to
cache on the daughter card or logic board what it's going to cost to fix?

ron herfurth

[Tom Cornell]

Today, I tried some more experiments. I used G4 cache software that turns off
the L2 cache. It registered an error message immediately that said the SRAM was
not present. Presumably, this means the cache memory is defective. I removed
the CPU card and scanned it with an 10X magnifier and could not see anything
obvious in the way of bad solder. Wish I had some means of testing the cache.
Maybe TechTool Pro will tell me something.

Tom Cornell wrote:

> Ron, I have exactly the same problem with my 400 MHz Lombard. I'll sure be
> interested in seeing if anyone has any suggestions. What I'd like to know is
> if the cache is a separate chip in a socket or if it's built on the same
> board as the CPU. That would mean the CPU card is now defective.
>
> Have you found a place where one can get a service manual for the Lombard?
>
> Hope we can get some answers and help.
>
> Tom
>
> Ron Herfurth wrote:
>

> > I just started getting the message when I start up my 333 MHz Lombard (OS
> > 9):
> >
> > "The built-in memory test has detected a problem with cache memory. Please
> > contact a service technician for assistance."
> >
> > It still starts up and runs. Any one have any idea if that is referring to
> > cache on the daughter card or logic board what it's going to cost to fix?
> >
> > ron herfurth

[Tom Cornell]

Tech Tool Pro 3.0 said the cache was "unavailable." I take that to mean it's
missing or dead. I did get a reply from a vendor on eBay that the cache is on the
CPU card as I expected. The two RAM chips are also mounted on this card, one on
top and one on the bottom.

Tom Cornell wrote:

> Today, I tried some more experiments. I used G4 cache software that turns off
> the L2 cache. It registered an error message immediately that said the SRAM was
> not present. Presumably, this means the cache memory is defective. I removed
> the CPU card and scanned it with an 10X magnifier and could not see anything
> obvious in the way of bad solder. Wish I had some means of testing the cache.
> Maybe TechTool Pro will tell me something.
>
> Tom Cornell wrote:
>

> > Ron, I have exactly the same problem with my 400 MHz Lombard. I'll sure be
> > interested in seeing if anyone has any suggestions. What I'd like to know is
> > if the cache is a separate chip in a socket or if it's built on the same
> > board as the CPU. That would mean the CPU card is now defective.
> >
> > Have you found a place where one can get a service manual for the Lombard?
> >
> > Hope we can get some answers and help.
> >
> > Tom
> >
> > Ron Herfurth wrote:
> >

> > > I just started getting the message when I start up my 333 MHz Lombard (OS
> > > 9):
> > >
> > > "The built-in memory test has detected a problem with cache memory. Please
> > > contact a service technician for assistance."
> > >
> > > It still starts up and runs. Any one have any idea if that is referring to
> > > cache on the daughter card or logic board what it's going to cost to fix?
> > >
> > > ron herfurth