ram@kepler.unh.edu (Richard A Messner) (06/18/91)
First of all I'd like to thank everyone for the many helpful replies I got in regards to the hard disk info I was asking for. If anyone would like a summary, please leave mail (I got some conflicting data, but I should have it sorted out soon). On to other business - recently the power supply in one of our Z-248's burned out. Can anyone point me to some schematics or other technical info? All the components inside seem to have Zenith in-house part numbers, so even if the faulty component is found, there's no easy way to figure out what to replace it with (the problem seems to be the -12 volt supply, which is currently reading -16 volts). If anyone has a cross-reference list relating Zenith part numbers to commercial parts, or something like that, I'd appreciate it. Zenith is willing to repair it at a price for which we could probably purchase four generic power supplies (which may not fit in the case). The model number for the supply is ZDS-234-859, and the model number for the computer itself is ZBF-2339-BK. Incidentally, a word of warning - these power supplies seem to have poor protection on the output side. I know of several cases where a shorted component on one of the bus cards fried the supply. If you suspect that any of your circuits are getting flaky, check it out immediately, especially if you use these systems for hardware development, as is done here in the EE department. Thanks.