触摸屏无响应 [故障现象] 一台触摸屏不能工作，触摸任何部位都无响应。 [故障分析处理] 首先检查各接线接口是否出现松动，然后检查串口及中断号是否有冲突，若有冲突，应调整资源，避开冲突。再检查触摸屏表面是否出现裂缝，如有裂缝应及时更换。还需要检查触摸屏表面是否有尘垢，若有，用软布进行清除。观察检查控制盒上的指示灯是否工作正常，正常时，指示灯为绿色，并且闪烁。
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