Re: Clock battery and floppy lubrication

From: Dr. Helmut Post <helmut_post_at_email.domain.hidden>
Date: Thu, 12 May 2005 07:20:59 +0200


Hi,
I think you have a problem with your COPS412 chip: The COPS421 handles the RTC (Real Time Clock) which has a span of 15 years. Consequently this was set for 1980 to 1995, which means that it'll be
really interesting to set dates such as 1998. Talk about Y2K premonition! I
wonder what Apple was thinking...
But it's really interesting, that the clock is working until the year 2005 with OS 7.1.1, and even until 2040 if you are running Mac OS 7.5.5 with MacWorks II+
( still available through John Woodall on Ebay (vintagemicros.com)). I had the same problem as you do. As I exchanged my COPS 421, the problem was gone.

Helmut Post

> The clock has never worked. I know about the time issue. Not even setting
> it to times the Lisa clock can recognize worked, even after I got it. I
get
> an error message that the time is not set (or something similar) every
time
> I turn the computer on. I assume the batteries were dead or the clock
> doesn't work.
>
>
> > sauersr_at_email.domain.hidden wrote:
> >
> > >When I purchased my Lisa II from Sun many years ago, it has a dead
clock
> > >battery, or a broken clock. All I know is that the clock has never
worked.
> > >
> > >
> > And it never will. These don't have a Y2K problem, they have a 1995
> > problem. So don't worry about the date. Do, however, worry about the
> > batteries leaking. If you really want to replace them they are a 4 pack
> > of NiCAD's - don't use anything else or you'll damage your I/O board.
> > Instead of replacing them, I would highly recommend just removing them.
> > You can either cut them off at the tabs (careful not to damage the
> > board) or desolder them. (- also be careful).
> >
> > The Lisa will run fine with no batteries at all and you remove the risk
> > of a leak damaging your I./O and motherboard.
> >
> >
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Received on 2005-05-11 22:30:23

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