Rastergraf Eclipse3 Series User Manual
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Contents
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Rastergraf4-2 Troubleshooting4.1 General ProceduresThe Eclipse3 boards were designed with reliability and durability in mind.Nevertheless, it may happen that a problem will occur. This section isdevoted to aiding the user in tracking down the problem efficiently andquickly.You may be able to locate minor problems without technical assistance. Ifthe problem can not be remedied, Rastergraf can then issue a ReturnMaterial Authorization (RMA) so that the board can be returned to thefactory for quick repair.It can happen that installing a new board will overload the computer’spower supply if the power supply margins are exceeded. The first step inascertaining if this is the problem is to calculate a power supply budget.This involves adding up the power requirements of each board in thesystem to see if you are within specification. Consult your computer’stechnical manual for information on how to correctly determine this. Atypical Eclipse3 will draw a total of less than 1 amps at +5 and +3.3 Volts.When attempting to verify that the power supply is working properly, it isnot unusual to unplug everything and measure the supply without a load.While this practice is acceptable for linear supplies, switching supplies(which are very commonly used in computers) require a certain loadbefore proper regulation is achieved. Typically, at least 5 Amps must bedrawn from the +5 Volt supply before the +12 volt supplies will give theproper readings.It can also happen that if you build your own cables and you short +5 toground on the Eclipse3 front panel connector you may trigger the auto-resetting fuse which protect power supply pins when an overload occurs.The fuse resets automatically when an overload is removed.NoteIf the board is not functioning, check that +3.3V is supplied on the hostside connectors. The Eclipse3 boards REQUIRE both +3.3V and +5V.The PMC and PCI boards can be supplied with a local +3.3V regulator, soif there is no way to supply +3.3V on the backplane, there is a way out.Please contact Rastergraf if you need to do this. |
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