Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!unix.cis.pitt.edu!dsinc!wells!beyonet!beyo From: beyo@beyonet.UUCP (Steve Urich) Newsgroups: comp.sys.3b1 Subject: Re: fan speedup-power supply question Summary: Upgrading PS1569 > PS1610-1 Message-ID: <172@beyonet.UUCP> Date: 15 Jun 91 17:32:04 GMT References: <1991Jun12.125517.9615@news.gvl.unisys.com> <171@beyonet.UUCP> <1991Jun14.034234.17406@ceilidh.beartrack.com> Distribution: usa Organization: Beyonet Network Lines: 20 In article <1991Jun14.034234.17406@ceilidh.beartrack.com> dnichols@ceilidh.beartrack.com (DoN Nichols) writes: > Unfortunately, the Tech. Ref. Manual does not contain schematics of >the power supply. That was a unit supplied by a different manufacturer, so <*> Unbelievable! What about the UNIX-PC Service Manual OC: 582-602-030? >there were no released schematics, and perhaps none available to Convergent. <*> The Power Supplys were made by Power Systems Inc. Anyone know if they are still in business? The only thing that I'm worried about is that CRB101 component. I'll take a "CET" guess and say that its the bridge rectifier location. For one of the higher voltages? The rest look pretty easy to get! Steve Urich WB3FTP