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一、故障现象:开机后屏幕上有电子游标显示,但转动圆球轨迹滚球时电子游标X—X横向活动缓慢,Y—Y纵向不动。二、检修分析:美国ACUSON—128彩色电脑超声仪是一部用于内脏临床诊断的多功能精密超声仪。该机曾发生“按下COLOR按钮,屏幕无彩色显示”故障经对印刷板作除尘处理后显示恢复正常。鉴此我们对故障进行了分析认为:圆球轨迹滚球安装于键盘右侧直接暴露于外,操纵人员用手滚动圆球来达到改变电子游标在显示屏幕上的位置,进行人体器官及病变大小的测量时,脏物进入内
First, the fault phenomenon: Power on the screen after the electronic cursor display, but when turning the ball trajectory electronic cursor X-X lateral activity is slow, Y-Y vertical motion. Second, the maintenance analysis: the United States ACUSON-128 color computer ultrasound system is a clinical diagnosis for visceral multi-function precision ultrasound. The aircraft had “press the COLOR button, the screen no color display” after the failure of the printing plate for dust treatment showed normal return. Therefore, we analyzed the fault that: ball track ball installed on the right side of the keyboard directly exposed to the outside, the operator manually scroll the ball to change the position of the electronic cursor on the display screen for human organs and lesion size When measuring, dirt gets inside