AEC Star T3 Service Manual
Also see for Star T3: Service manual
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ST3 1-3kVA Service Manual Rev.1Allis Electric Page 5 of total 12 September 20063. Troubleshooting3.3 Boost AnalysisGeneral speaking, the most distinct phenomenon of failure on this section is F1 and F2. Open finding this will be veryhelpful to repair them.1kVA-Boost2/3kVA-BoostStep Checked components InstrumentfunctionReferenceValueFailure Mode1 F1,F2 Ω short open2 2K/3K:Q04~Q07 (G.S)1K:Q4,Q6,Q10,Q11(G.S)Ω 23.49kΩ short or open3 2K/3K:D05,D06,D07,D081K:D12,D13,D14,D15DIODE 0.41 short or openAction ltem:(1) Make sure the DC fuses with same rating as original ones for replacement. Otherwise, unpredictabledanger might happen.(2) If all above-stated components are replaced well and UPS still can’t be DC start, change Boost ControlModule. |
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