Question about Powerware 9120 UPS System
LCD message display is dc bus fault. why comes this fault? what is remade?
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Posted on Jan 02, 2017
there is a 100uf/63v capacitor near the IRF630 fet. You need to replace this in order to fix this error. Along there is also a 2200uf/16v capacitor. It is a good idea to change the both at the same time.
Posted on Feb 05, 2008
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