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[求助] powerfail/warm start occurred 北分SP3420A,求助应如何处理?

通氮气,打开色谱。发现屏幕显示powerfail/warm start occurred。
逐块清扫电路板,中间曾出现:fault 219、不显示、乱码(乱的还不一样)…
尝试了10几次,最后还是归于了powerfail/warm start occurred

请问应如何处理呢?
是哪块板子坏了呢?

谢谢大家!!^^
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