RS/6000 580

YAY! I've got it partially IPLing off of the drives that came out of my 55L. It seems to halt with a message of '552' - IPL Varyon falied. Does anyone know enough IBM-speak to tell me what that means? Aparently, the problem it was having earlier with powering off automagically was caused by the power supply thinking a fan was broken - once I fixed that problem, it magically started doing stuff again. I'm about to try booting in service mode with a set of diagnostic disks and see if I can figure anything else out. One more thing -- I'm still getting just a black picture out of the video card, like I was with the 5%L. Does anyone know if that's what it should be doing, or if something there is amiss, too? I've got a 'real' rs/6000 keyboard and mouse hooked up to the system this time, and haven't tried booting with a serial terminal yet. Thanks for any help. -- Pat