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<p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; color: rgb(38, 38, 38); font-size: 16px; box-sizing: border-box !important; word-wrap: break-word !important;"> 超声设备的“死机”故障如同电脑常碰到的“死机”故障一样，有时会通过关机，然后再开机，机器就会正常工作。但有时“死机”现象无论通过什么应急手段都排除不了，在这种清况下，维修工作者切不可心急，应耐心细致的去查找“死机”故障形成的原因，从而排除“死机”故障。</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; color: rgb(38, 38, 38); font-size: 16px; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;" /></span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; color: rgb(38, 38, 38); font-size: 16px; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; list-style: none; box-sizing: border-box !important; word-wrap: break-word !important;"> </strong><span style="font-size: 16px; max-width: 100%; color: rgb(255, 41, 65);"><strong style="max-width: 100%; list-style: none; box-sizing: border-box !important; word-wrap: break-word !important;">故障现象1</strong> </span></span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; color: rgb(38, 38, 38); font-size: 16px; box-sizing: border-box !important; word-wrap: break-word !important;"> 开机自检失败，机器起动不起来。打开机器前端盖，给机器送电后，检测机器直流工作电压，VP2 电压等于＋3.8V ，正常值VP2 = + V5 。因为此组电源与彩超前端板及通道板有关，所以先拔下探头，然后开机，机器仍然起动不起来。查机器前端通道板CB0-CB8 共八块，先拔下其中4 块，再开机，机器自检通过，检测VP2 = + 5V 不变。恢复前端通道板当其超过5 块，起动机器，VP2 电压就低于4.5V ，有时低至4.3V ，机器自检不能通过，就出现“死机”故障。分析原因，是否VP2 直流十5V 电源带载能力差引起的“死机”问题？联系飞利浦厂家，借来新电源箱，试机VP2= +5V 不变，机器自检通过，工作正常，“死机”故障排除。所以认为此故障是VP2 电源带载能力差，引起在开机过程中＋5V 电源压降大，从而引起开机自检不过，出现“死机”故障。</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; color: rgb(38, 38, 38); font-size: 16px; box-sizing: border-box !important; word-wrap: break-word !important;"><br /></span></p><p style="text-align:center"><span style="max-width: 100%; color: rgb(38, 38, 38); font-size: 16px; box-sizing: border-box !important; word-wrap: break-word !important;"><img data-s="300,640" data-type="jpeg" src="http://mmbiz.qpic.cn/mmbiz/dx3KibwtDhvdpAY8AShHec2kN2suBuBW6sX9jF4gVic09l8KAj62p6Vics0HWzXHfD7FshibUDDX2Av15KIgdvnv5g/0?wx_fmt=jpeg" data-ratio="1.7518518518518518" data-w="270" /><br /></span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; color: rgb(38, 38, 38); font-size: 16px; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; list-style: none; box-sizing: border-box !important; word-wrap: break-word !important;"> </strong><strong style="max-width: 100%; list-style: none; box-sizing: border-box !important; word-wrap: break-word !important;"> <span style="font-size: 16px; max-width: 100%; color: rgb(255, 41, 65); box-sizing: border-box !important; word-wrap: break-word !important;">故障现象2 </span></strong></span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; color: rgb(38, 38, 38); font-size: 16px; box-sizing: border-box !important; word-wrap: break-word !important;"> 图像“冻结”，操作键不好用。关机后再开机，机器起动不起来，监视器屏幕是“灰屏”，即什么显示也没有。利用彩超维修用备份起动盘起动也不 能排除“死机”故障。检查机器内各组直流工作电压，全部正常。环疑机器软件故障，但重新安装机器软件时，总是在软件安装到一半的时候就停下来，不再往下进 行，所以也不能解决“死机”问题。最后查到机器主板，经替换检查发现主板上的内存条有问题，换了一块内存条后，机器“死机”故障排除。开机机器自检，工作 都正常。“死机”故障的原因是机器主板内存条损坏引起的。这次维修经历告诉我们，有时处理“死机”间题要想的全面些，甚至复杂些。</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; color: rgb(38, 38, 38); font-size: 16px; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;" /></span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; color: rgb(38, 38, 38); font-size: 16px; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; list-style: none; box-sizing: border-box !important; word-wrap: break-word !important;"> </strong><span style="font-size: 16px; max-width: 100%; color: rgb(255, 41, 65);"><strong style="max-width: 100%; list-style: none; box-sizing: border-box !important; word-wrap: break-word !important;">故障现象3</strong> </span></span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; color: rgb(38, 38, 38); font-size: 16px; box-sizing: border-box !important; word-wrap: break-word !important;"> 在正常操作过程中，机器经常无规律的“死机”，有时关机后再重新开机，机器又恢复正常工作。但有时再开机，机器仍旧 “死机”。有时出现“死机”故障时，稍等一会，机器又可自行恢复正常。开始想的比 较复杂，环疑的地方都采取过措施，但都不能排除“死机”故障。后来在随机观察中发现，机器在正常操作过程中，“冻结”图像，进行检测后，再按冻结键，以解 除“冻结”图像，但此机器回复不到实时检查状态。几次实验，都是在图像冻结，进行必要的检测后，不能再进行下一步操作检查，因此怀疑机器冻结键有问题。打 开机盖检查，发现机器的冻结键由于频繁的操作使用，使按键磷铜片有裂缝，引起按键开关的弹性改变，在机器正常操作过程中，按下冻结键后，开关闭合，图像冻 结，松开按键，其按键开关应马上断开，以便进行其它操作。但由于此开关磷铜片裂缝，弹性不足，在按键开关外力松开时，其接点不是立即弹开，而是非常缓慢的 弹开。这个弹开过程需要的时间，有时短一些，有时长一些，而处于这个时间过程中，操作其它功能键都不好用，出现“死机”故障。解决的方法：由于开关磷铜片 有裂缝，开关弹隆变差，使这个开关不能再使用，又由于这个开关比较特殊，市场上不能买到，所以就从键盘其它位置上找了一个不太常用的开关换过来，从此机器 “死机“故障再也没出现过。</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; color: rgb(38, 38, 38); font-size: 16px; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;" /></span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; color: rgb(38, 38, 38); font-size: 16px; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; list-style: none; box-sizing: border-box !important; word-wrap: break-word !important;"> <span style="font-size: 16px; max-width: 100%; color: rgb(255, 41, 65); box-sizing: border-box !important; word-wrap: break-word !important;">故障现象4 </span></strong></span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; color: rgb(38, 38, 38); font-size: 16px; box-sizing: border-box !important; word-wrap: break-word !important;"> 2006 年2 月彩超室HDI-5000 彩超机器在开机过程中，自检不过出现“死机”故障，反复开机不能解决问题，使机器无法操作。后经查明造成“死机”故障是由于键盘上cAPTuRE 按 键不能复位，而造成按键不能复位的原因是检查中使用的卫生纸，由于纸质较差，碎纸屑、纸末多，使用过程中将这些碎纸屑、纸末散落在键盘上，这些纸屑、纸末 象细沙一样塞进了按键开关处，使开关按下时被塞住在按下的位置，松开按键，开关不能自行复位。机器开机自检时，检查到这些未回复到原始状态的开关，便发出 自检发现故障而不能往下进行的报警，使机器出现“死机”故障。拆开机器，将键盘板清洁干净，故障就排除了。这是由于灰尘问题引起的“死机”故障。这个例子 告诉我们，有时对某些“死机”故障不必想得太复杂，只要加强对机器的日常保养，就不至于在机器使用时出现故障，造成检查患者积压增多，形成门诊秩序混乱的局面。</span></p><section data-id="分隔260" class="" style="max-width: 100%; color: rgb(62, 62, 62); white-space: normal; text-align: center; line-height: 23.2727px; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><section style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"><section class="" style="margin-top: 0.5em; margin-bottom: 0.5em; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"><p style="max-width: 100%; min-height: 1em; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important;"><img data-ratio="0.06457564575645756" data-w="" class="" data-type="jpeg" width="auto" src="http://mmbiz.qpic.cn/mmbiz/RhNHWr3nmR2ZmGJMg1ibEkZ0NTX3L0MVz86O9WcOnrxSAEeAhBnickSLYiamw5GM4vXxmvs7NnQAto46oibvjYmnFQ/640?wx_fmt=jpeg" style="box-sizing: border-box !important; word-wrap: break-word !important; width: auto !important; visibility: visible !important;" /></p></section></section></section><p style="max-width: 100%; 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发表于 2020-10-19 23:52:11