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Upgrading RISC CPU cards

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telecoman

Technical User
Aug 25, 2007
34
GB
Hi all,
I'm still having problems with this one!
I've changed the two 40-pin EPROM's on a 871/1/06796/010 CPU card to those from a 871/1/06796/011 CPU (BA687 on 010 & BA804 on 011) and tested the card in an iSDX-S but still get the red LED on the UPI indicating software error!
Is there anything else that I need to do eg:- change the little 8-pin chip IC109? What should the DIP switch settings be?
Are the two 40-pin EPROM's the same for all the cards suffix 001, 011 and 021? - they are all the same numbers for the suffix 000, 010 and 020 cards!
The little 8-pin chips IC109 are the same number on suffix 000 and 010 cards but different on the 020 card(BA688 on 000 & 010, BA772 on 020).
Help again pleeese gentlemen!!!!?
Best regards to everyone,
Telecoman.
 
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