What are some of the known problems with the Myarc HFDC?
I found this information while reading an article written by Dan Eicher and Jeffrey White in January 1996 issue of Micropendium, on pages 7 & 8. The article is about trying to upgrade the 9234 disk controller chip to a 9224. While the upgrade/modification was not succesful there were some valuable lessons learned. • Cables, cables, cables… Always check and make sure you have a good working set of cables. This is the easiest thing to replace but often causes many headaches and hours of pointless troubleshooting. In my tech support days I learned the following: start and check the basics first. • AM26L32PC chip is buggy and can cause ‘quirky’ system problems. If you have one of these chips it is suggested to replace it with a AM26LS32AC. • A design flaw on the HFDC card layout. The part of the HFDC that sticks out the back of the PEB has control lines that run from the AM26LS32x chip to the hard drive connectors. This control line can be easily scraped and rubbed against the back plane
