[parisc-linux] [Fwd: Re: Repair of BM200-3601]
The Mail to "Ed J.M. Veling" was bounced by a BLACKHOLE LIST filter. So I resend it to PA-RISC group !
Bye
Christoph
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From - Fri Oct 10 23:57:34 2003
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Date: Fri, 10 Oct 2003 23:57:30 +0200
From: Christoph Plattner <[email protected]>
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To: "Ed J.M. Veling" <[email protected]>
Subject: Re: Repair of BM200-3601
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Sorry to hear that .... I also suffer, if my "old machines" have troubles ....
Hello,
do we speak here about the same type of power supply, then I may help you perhaps.
Ths small SIMM-lile module on the 60-pin conntector side, is a supervision module generating the "emergency stop" signal to the power supply, if there is a problem. Further it generates the the RESET signal for the machine (or better the POWER GOOD signal).
As I remember the schematics, there are 6 reasons for switching off the power supply:
Over 5V, 12V, under -5, -12V, over current and over temperature. You have to find out, which is true here.
Check the type, and reply if you need further help .... Christoph
Quoted 45 lines · Ed J.M. Veling
Dear Christoph,
With interest I have read your contribution w.r.t. the repair of the BM200-3601 power supply.
We have comparable problems: 2 power supplies have worked for 11 years and then suddenly
almost at the same time they stopped. It is possible to restart these UNIX workstations
but after some time, sometimes one hour, sometimes 2 days later, they stop again.
By the way, these workstations are located in a air-conditioned room. So, I was very happy to read your suggestion to put some resistance into the power supply.
At our department, a technical person has done this repairment. Last tuesday I restarted the workstation
and I was very happy to see it operating. However, after two days, I was quite
disappointed: again,
the workstation was dead.
Now, you are my last resort. Do you have maybe another suggestion to keep these power supplies
alive ?
I thank you very well in advance.
Yours sincerely,Ed Veling
--
Dr. E.J.M. Veling,
Delft University of Technology,
Faculty of Civil Engineering and Geosciences, Department of Water Management,
Section for Hydrology and Ecology,
Stevinweg 1, NL-2628 CN Delft, The Netherlands,
P.O. Box 5048, NL-2600 GA Delft, The Netherlands,phone: (+31)152783156 ((+31)152785074), fax: (+31)152785915, room: 4.89, e-mail: [email protected] URL: http://hydrology.citg.tudelft.nl
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