'Slice 1 on the IP19 in slot 2' refers to the second slice (they're numbered 0 through 3) on the second card in the system (the first card being an MC3 of course).
Ian has a diganostic roadmap for the Challenge & Onyx line on his website ( here ), that might be of help to you.
You may be able to repair the board if it's something as simple as a bad cache module or CPU, but if one of the onboard ASICs is bad you'll have to find another bad IP19 that you could scavenge parts from.
It would be easier just to replace the IP19 card though - but if you're looking for a 4x250 card they'll be pretty pricey (which is why I've only got 8x150's in my Challenge L)
Ian has a diganostic roadmap for the Challenge & Onyx line on his website ( here ), that might be of help to you.
You may be able to repair the board if it's something as simple as a bad cache module or CPU, but if one of the onboard ASICs is bad you'll have to find another bad IP19 that you could scavenge parts from.
It would be easier just to replace the IP19 card though - but if you're looking for a 4x250 card they'll be pretty pricey (which is why I've only got 8x150's in my Challenge L)