觸摸屏無響應 [故障現象] 一臺觸摸屏不能工作，觸摸任何部位都無響應。 [故障分析處理] 首先檢查各接線接口是否出現松動，然后檢查串口及中斷號是否有沖突，若有沖突，應調整資源，避開沖突。再檢查觸摸屏表面是否出現裂縫，如有裂縫應及時更換。還需要檢查觸摸屏表面是否有塵垢，若有，用軟布進行清除。觀察檢查控制盒上的指示燈是否工作正常，正常時，指示燈為綠色，并且閃爍。
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