Marshall H.
On Thursday, October 11, 2001, at 07:49 PM, James MacPhail wrote:
>
> Q: Would others prefer this to be off-list, or should it remain on-list?
>
> Hi Vince,
>
>> The board I have is a XL board I believe because the board # is 620-142
>> which according to sun remarketing manual says its an XL board. But
>> that
>> manual says it will work in my Lisa 2/10. There is no battery pack on
>> this
>> board. I'm gonna check the other suggestion now on the board to try
>> and get
>> it to fire up.
>
> I was under the impression that you had a Lisa 2, not a Lisa 2/10, but
> it
> may not matter...
>
> The Lisa 2 has an external parallel port connector (near the serial
> ports
> on the back), the Lisa 2/10 does not. The Lisa 2/10 has an interrupt
> button, the Lisa 2 does not. Others may have different definitions of
> course.
>
> Various re-configurations and name changes confuse the issue of what is
> each kind of Lisa, however the prescence or abscence of a parallel port
> on
> the back panel of the motherboard is a reliable indicator.
>
> The Lisa 2 usually has the 1.2 Amp power supply, the 2/10 usually has
> the
> 1.8 Amp power supply, although both work in both machines, the extra
> power
> requirements of the 2/10 pretty much require the stronger power supply.
> (These nameplate ratings are for the 120 volt version, the 240 volt
> versions have different nameplate current ratings).
>
> As for I/O boards, I believe they are NOT completely interchangable,
> perhaps someone else can comment on this. If you have a back panel
> parallel
> port, your I/O board should be 620-0117 (with the battery & switch,
> battery
> perhaps removed). If you do not have a back panel parallel port, your
> I/O
> board should be 620-142 (no battery).
>
>> Just to verify, U7F a 7417. No jumper wire where you where
>> describing, but
>> I may have a different board than what you thought. Jumping pin 12 to
>> 14
>> causing pin 12 to go high doesnt fire it up.
>
> U7F is a 7417 on both I/O boards. The flying wire is only present on
> 620-0117.
>
> It is possible I have the sense of the pin 12 voltage backwards. If it
> is
> 5V when the Lisa is off, try pulling it to ground to see if the power
> supply starts up.
>
>> Ok, I checked U7F pin 12 and it does go to pin 120 on the edge
>> connector.
>
> You could check that that pin goes through the motherboard and chassis
> to
> the power supply's edge connector, sorry I don't know what pin off-hand.
>
>> Is there any way to check votages out of the power supply connector to
>> verify it is the power supply?
>
> Since you have already confirmed the 5V standby power is working, there
> is
> no simple test. This is a problem with switching power supplies.
> Swapping
> power supplies would be the easiest thing, but not everyone has a garage
> full of Lisas (neither do I).
>
> HTH,
>
> James
>
> James MacPhail "Think not of engineering as art,
> uo957_at_email.domain.hidden but of art as engineering"
> Sigma Seven Systems Ltd.
> james_at_email.domain.hidden <http://SigmaSevenSystems.com>
>
>
>
> --
> LisaList is sponsored by <http://lowendmac.com/> and...
>
> Shop buy.com and save. <http://lowendmac.com/ad/buy.com.html>
>
> Support Low End Mac <http://lowendmac.com/lists/support.html>
>
> LisaList info: <http://lowendmac.com/lists/lisa.html>
> Send list messages to: <mailto:lisalist_at_email.domain.hidden>
> To unsubscribe, email: <mailto:lisalist-off_at_email.domain.hidden>
> For digest mode, email: <mailto:lisalist-digest_at_email.domain.hidden>
> Subscription questions: <mailto:listmom_at_email.domain.hidden>
> Archive: <http://www.mail-archive.com/lisalist%40mail.maclaunch.com/>
>
> Using a Macintosh? Get free email and more at Applelinks!
> <http://www.applelinks.com>
>
-- LisaList is sponsored by <http://lowendmac.com/> and... Shop buy.com and save. <http://lowendmac.com/ad/buy.com.html> Support Low End Mac <http://lowendmac.com/lists/support.html> LisaList info: <http://lowendmac.com/lists/lisa.html> Send list messages to: <mailto:lisalist_at_email.domain.hidden> To unsubscribe, email: <mailto:lisalist-off_at_email.domain.hidden> For digest mode, email: <mailto:lisalist-digest_at_email.domain.hidden> Subscription questions: <mailto:listmom_at_email.domain.hidden> Archive: <http://www.mail-archive.com/lisalist%40mail.maclaunch.com/> Using a Macintosh? Get free email and more at Applelinks! <http://www.applelinks.com>Received on 2001-10-11 16:54:03
This archive was generated by hypermail 2.4.0 : 2020-01-13 12:15:19 EST