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故障现象 开机面板自检正常 ,各指示灯亮 ,监视器有字符显示。但无论在Ｂ ,Ｂ/Ｍ或Ｍ扫描方式下 ,均无超声扫描信号 ,也无灰阶显示。故障分析与排除 从故障现象可以看出 ,此故障与未装探头时的现象一致 ,故首先怀疑探头问题 ,恰好手头有一同型号的探头 ,用其代换 ,故障依旧。
Symptom The self-test of the boot panel is normal, each indicator is on, and the monitor has character display. However, there are no ultrasonic scan signals and no gray scale display in B, B/M or M scan modes. Fault Analysis and Exclusion It can be seen from the fault phenomenon that the fault is consistent with the phenomenon when the probe is not installed. Therefore, the probe is first suspected. The probe with the same model at hand is used, and the fault is still the same.