| Author |
AlphaServer 1200 toy clock
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| FBSD_AS1200 2005-09-20, 6:05 pm |
| Has anyone replaced their AlphaServer 1200 TOY clock and if so what unit
did you use for the substitution.
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| Richard Tomkins 2005-09-20, 8:49 pm |
| Why do you need to replace it?
Cannot just change battery?
"FBSD_AS1200" <mail_list@mindspring.com> wrote in message
news:n1_Xe.1138$oc.130@newsread2.news.pas.earthlink.net...
> Has anyone replaced their AlphaServer 1200 TOY clock and if so what unit
> did you use for the substitution.
>
| |
| mail_list@mindspring.com 2005-09-21, 2:50 am |
| Richard Tomkins wrote:
> Why do you need to replace it?
>
> Cannot just change battery?
>
>
> "FBSD_AS1200" <mail_list@mindspring.com> wrote in message
> news:n1_Xe.1138$oc.130@newsread2.news.pas.earthlink.net...
>
>
>
>
In short I am unsure as to weather or not the battery can be changed.
The unit is a Dallas Semiconductor DS1287 clock chip. Unless I have
missed something the unit does not look like it would disassemble easily.
| |
| Tom Smith 2005-09-21, 2:50 am |
| mail_list@mindspring.com wrote:
> Richard Tomkins wrote:
>
> In short I am unsure as to weather or not the battery can be changed.
> The unit is a Dallas Semiconductor DS1287 clock chip. Unless I have
> missed something the unit does not look like it would disassemble easily.
>
What makes you thonk something is wrong with it?
-Tom
| |
| Ben Myers 2005-09-21, 2:50 am |
| That explains the request of the OP. The DS1287 and follow-on products like the
DS12287 were supposed to last 10 years, more or less, according to manufacturer
Dallas Semiconductor (and competitor Benchmarq who made a plug-compatible IC).
These chips have clock, CMOS and battery integrated into a single 28-pin IC.
If the chip is socketed on the AlphaServer 1200, it can be removed and replaced
with another. DEC almost always socketed these chips, or so I've seen on the
DEC Wintel boxes which used them. I ***THINK*** that the DS12887 is
plug-compatible with the DS1287, but I'm not dead certain. The Dallas Semi web
site has complete specs and pinouts for these ICs.
Anyway, the OP should examine the writing on top of the chip, and post what it
says. I have some the Dallas and Benchmarq chips here, and will sell for
cheap... Ben Myers
On Wed, 21 Sep 2005 02:27:17 GMT, mail_list@mindspring.com wrote:
>Richard Tomkins wrote:
>
>In short I am unsure as to weather or not the battery can be changed.
>The unit is a Dallas Semiconductor DS1287 clock chip. Unless I have
>missed something the unit does not look like it would disassemble easily.
>
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