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B超机的维护简单检修

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发表于 2020-10-19 23:46:05 | 显示全部楼层 |阅读模式

                    

                    

                    
                    
                    <p style="text-indent: 0em; line-height: 2em;"><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">1</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">电源部分</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333"><br  />&nbsp;&nbsp;&nbsp; </span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">电源由变压、整流、滤波、稳压等部分组成。它给整机提供了随电网电压变化的稳定电压,多数电源部分的工作电流较大,由于大电流至使一些元件在正常工作时就要发热,如整流桥、稳压块等,当负载过重</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">(</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">即电流过大</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">)</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">,电网电压过高和温度过高</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">(</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">如散热不良</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">)</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">时,都可能造成这些元件的损坏。所以要加装交流稳压器来稳定电源电压</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">;</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">安装空调机来降低室内温度和定期清除机器内部的灰尘等等。采取这些措施是完全可以减少电源部分损坏的可能的,同时亦可大大减少机器的故障率,即使对于一些电源部分损坏的机器我们用国产元件代替也收到了比较理想的效果</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333"><br  />2</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">显示部分</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333"><br  />&nbsp;&nbsp;&nbsp; B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超的显示部分有主机、监视器和照相监视器。监视器由视频放大,扫描和显示等几大部分组成,它将高分辨地显示出来自主机的超声图像,我们通过实践感到监视器的故障多出现在扫描部分,其中以行扫描的故障率为最高,与电源部分类似,行扫描部分正常工作时就是在高电压和大电流的状态下,它几乎消耗了整个监视器一半以上的电能,在正常工作时就有一系列的发热元件,如</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">:</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">行输出管、行输出变压器和行校正线圈等,当散热不良时,就可以造成这些元件因过热而损坏或使线路板开焊。温度过高可引起</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超机多处发生故障,所以通风与降温对</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">来说是非常重要的,这样可防患于未然,更好的保证机器正常工作。</span></p><p style="text-indent: 0em; line-height: 2em;"><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333"><br  />3</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">健盘故障</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333"><br  />&nbsp;&nbsp;&nbsp; B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超机的键盘由多种功能键和数字字母键组成,它是</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超操作最多的部分,由于机器的生产厂家和型号不同,键盘也略有所异,但大致可分为两种</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">:</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">一种是由独立的按钮开关组成的</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">;</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">一种是整体的触摸式按键,一般说来后者为近期产品。键盘最典型的故障就是接触不良,多数接触不良是由灰尘、触点氧化或触摸开关中的导电橡胶损坏所致,但以灰尘引起的接触不良为最多见。</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超机的防尘工作是十分重要的。</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超机安放的标准条件是,有空调设备、千燥、通风、洁净的房间里,即使这样</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超机还要定期清灰保养</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">(</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">每年至少</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">1</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">一</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">2</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">次</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">)</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">,这将可以大大减少</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超机键盘和其它部分的故障。</span></p><p style="text-indent: 0em; line-height: 2em;"><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333"><br  />4.</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">探头故障</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333"><br  />&nbsp;&nbsp;&nbsp; </span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">常用的</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超探头有线阵探头和机械扇扫探头。其中机械扇扫探头故障较多,常见故障为扇扫探头内有气泡,处理方法是</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">:</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">排气、灌油,在有关书中叙述过处理方法,这里不再重复,另一常见故障是扇扫探头不转,通常是探头本身驱动电机损坏,这时处理比较麻烦,需把探头锯开。</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333"><br  />5</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">机器受振动引起的故障</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333"><br  />&nbsp;&nbsp;&nbsp; B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超机是一台很复杂的电子仪器,其中有很多插板、插件、接线等。当受到较大振动时,这些插件有可能松动造成接触不良,使整机或机器的部分功能不能正常工作。移动</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超机时一定要尽量少其振动,平时</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超的脚轮的锁开关一定要锁住,以免机器滑动与其它物体碰撞。综上所述,我们可以看出</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超机的故障千变万化,有时使人眼花缭乱无从下手,但</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超机维修工作也有它的技术性、科学性和规律性,只要认真分析、细致查找,再复杂的故障也能排除。但如</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333"><br  /></span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">稍有琉忽,就会多走弯路,甚至造成更多的损失。所以维修这种高、精、尖的设备切勿盲目动手,在检修时必须严格遵守如下事项</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">:<br  />&nbsp;&nbsp;&nbsp; (1) B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超机结构复杂,维修难度大,所以拆卸时必须慎重,不可蛮干,要做好详细记录和标记,切勿接错。</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333"><br  />&nbsp;&nbsp;&nbsp; (2)</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">检修者一定要看好电路图和方框图,根据故障现象分析电路,确定故障范围,千万不能让一知半解的人乱拆乱卸,以免扩大故障范围。</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333"><br  />&nbsp;&nbsp;&nbsp; (3) B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超机中的集成电路多数是由</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">CMOS</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">电路构成,此种电路较易被人体或机壳感应的静电击穿,故检修时仪器或工具必须可靠接地,特别是电烙铁的外壳一定要接地或用余热焊接。检修人员不要用手接触电路板上的元件,当必须接触时,要带好静电手镯或静电指环,不要让别人摸电路元件,以免造成不必要的损失。</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333"><br  />&nbsp;&nbsp;&nbsp; (4)</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">在更换元件时原则上要用相同型号的,当用代用型号时,必须查清有关参数,确定符合后才能替代。</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333"><br  />&nbsp;&nbsp;&nbsp; (5 )</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">检修者必须能熟练掌握各种</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">8</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超机的操作,能运用自如,并要有一定的医学知识,这是维修</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超机不可缺少的必备条件。</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333"><br  />&nbsp;&nbsp;&nbsp; (6)</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">加强定期维修保养和使用人员严格遵守操作规程是减少故障延长机器寿命的重要手段,一般半年清洁一次,操作时间保持良好通风,防止过潮、过热,连续开机时间不超过</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">4h</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">,机械扇扫探头每次连续使用</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">l0min</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">一</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">15min</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">停扫一次,并要有一个良好的稳压电源和可靠的接地等等,这些都是我们必须严格遵守的,这样就可大大的减少</span><span style="font-size:16px;line-height:150%;font-family:Arial;color:#333333">B</span><span style="font-size:16px;line-height:150%;font-family:宋体;color:#333333">超机的检修率,提高了仪器的使用率。</span></p><p style="text-indent: 0em; line-height: 2em;">&nbsp;</p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-family: Arial, Verdana, sans-serif; font-size: 14px; line-height: 24px; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(249, 249, 249);">广州市设备维修有限公司</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 12px; font-family: Arial, Verdana, sans-serif; line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">地址:广州市天河区银利街银利茶叶博览中心E栋4楼E4030室 &nbsp; &nbsp; &nbsp; 邮编:510507</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 12px; font-family: Arial, Verdana, sans-serif; line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">电话:(+86)020-8722 8723 &nbsp; &nbsp;8764 5360 &nbsp; &nbsp;8764 2943 &nbsp; &nbsp; 传真:020-8722 8623</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 12px; font-family: Arial, Verdana, sans-serif; line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">全国统一免费服务热线:400-020-6788</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 12px; font-family: Arial, Verdana, sans-serif; line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">微信公众帐号:</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 12px; font-family: Arial, Verdana, sans-serif; line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><img data-ratio="1" data-type="jpeg" data-w="120" width="auto" src="http://mmbiz.qpic.cn/mmbiz/dx3KibwtDhvfCZvZq5PcthnDKlnnq3AalhbichW77J3B70osicTickklZybNKUZqc44DZ0oaWaHm2p0TaA9478icwPg/640?wx_fmt=jpeg" style="box-sizing: border-box !important; word-wrap: break-word !important; width: auto !important; visibility: visible !important;"  /></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 12px; font-family: Arial, Verdana, sans-serif; line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">维修咨询:QQ: &nbsp;712638 404</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 12px; font-family: Arial, Verdana, sans-serif; line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">设备咨询: &nbsp; QQ: &nbsp;712638 405</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 12px; font-family: Arial, Verdana, sans-serif; line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">软件咨询:QQ: 712638 406</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 12px; font-family: Arial, Verdana, sans-serif; line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">配件咨询:QQ: &nbsp; 712638 407</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 12px; font-family: Arial, Verdana, sans-serif; line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">交流Q群:1106 11074</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 12px; font-family: Arial, Verdana, sans-serif; line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">网址:http://www.yiliaoshebeiweixiu.com</span></p><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 12px; font-family: Arial, Verdana, sans-serif; line-height: 1.75em; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">电子邮箱:service@yiliaoshebeiweixiu.com</span></p><p><br  /></p>
               
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