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<p style="max-width: 100%;min-height: 1em;color: rgb(51, 51, 51);font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", " ingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 17px;letter-spacing: 0.544px;text-align: justify;white-space: normal;background-color: rgb(255, 255, 255);box-sizing: border-box !important;word-wrap: break-word !important;"><img data-type="gif" class="__bg_gif " data-ratio="0.10555555555555556" data-w="720" src="http://mmbiz.qpic.cn/mmbiz/M2H0aGBjWUTRia7nqkArYeKZUqEfdmpNibMPiaZk4gvlWk5v5lUKyXhjJP4CENKQeQt5HI8zwcTCWJOkicfWJiatdJQ/640?wx_fmt=gif" style="box-sizing: border-box !important;word-wrap: break-word !important;visibility: visible !important;width: auto !important;" /></p><p style="widows: 1;max-width: 100%;min-height: 1em;color: rgb(51, 51, 51);font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "ingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 17px;letter-spacing: 0.544px;text-align: justify;white-space: normal;background-color: rgb(255, 255, 255);box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 12px;color: rgb(136, 136, 136);box-sizing: border-box !important;word-wrap: break-word !important;">来源：彩超售后技术服务</span></p><p style="widows: 1;max-width: 100%;min-height: 1em;color: rgb(51, 51, 51);font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "ingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 17px;letter-spacing: 0.544px;text-align: justify;white-space: normal;background-color: rgb(255, 255, 255);box-sizing: border-box !important;word-wrap: break-word !important;"><br /></p><p><img class="rich_media_thumb" src="http://mmbiz.qpic.cn/mmbiz/lOiayYumJAicMibhvmxmsjYwZCtQx19hMBlslwgA46pt4cwYT059SulSekgmicuLKYwxibVFDzPraK5g4hHxibnu2kxw/640?wx_fmt=jpeg" style="display: block;width: 677px;visibility: visible !important;" data-type="jpeg" data-ratio="0.75" data-w="640" /></p><p style="margin-bottom: 0.1px;max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);line-height: 19px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;"><br /></span></p><p style="margin-bottom: 0.1px;max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);line-height: 19px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">hilipsiU22</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">彩色</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">超声</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">诊断仪是</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">飞利浦</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">电子集团于</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">2004</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">年推出的新一代智能超声设备。</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">iU22</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">集成了</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">2D</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">、</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">3D</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">和实时</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">4D</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">成像</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">模</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">式以及智能控制功能，能满足高质量的临床诊断需求，是比较高级的超声诊断仪。前不久，我公司成功为某医院的</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">hilipsiU22</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">彩色超声诊断仪进行了维修。本文将此次维修情况总结如下，供维修工程师以参考。</span></p><p style="margin-bottom: 0.1px;max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);line-height: 19px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;"><br /></span></p><p style="margin-bottom: 0.1px;max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);line-height: 19px;box-sizing: border-box !important;word-wrap: break-word !important;"><strong><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">故障现象</span></strong><span style="max-width: 100%;font-family: Helvetica, sans-serif;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><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">打开电源，系统进入待机状态。按下开机按键（</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">On/Standy</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">）后，系统开始上电初始化过程，但仅仅持续约</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">3</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">～</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">4</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">秒钟后，系统在启动过程中突然断电，机器背后的蓝色交流电源指示灯开始闪亮。此时再按下开机键，系统没有任何响应。将交流电源开关关闭，然后重新打开，再按开机电源键，故障依然。据操作人员反映，有时候将开机过程多操作几次，偶尔可以开机成功。一旦开机运行之后，机器可以正常操作，但关机之后第二天又不能正常启动。</span></p><p style="margin-bottom: 0.1px;max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);line-height: 19px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;"><br /></span></p><p style="margin-bottom: 0.1px;max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);line-height: 19px;box-sizing: border-box !important;word-wrap: break-word !important;"><strong><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">分析检修</span></strong><span style="max-width: 100%;font-family: Helvetica, sans-serif;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><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;"> 根据故障现象分析判断，怀疑系统的电源部分发生故障。</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">iU22</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">的直流供电单元安装在设备底部的电源箱内，需要打开设备的机箱左侧盖板才可以观察到。交流供电单元安装在设备底部后侧下部，装有一个空气断路器。</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;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><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">经过观察和分析，发现</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">iU22</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">的供电系统主要包括</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">6</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">个部分：</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;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;" />1.</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">交流单元（包含一个＋</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">12V</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">辅助电源）</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;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;" />2.+12V </span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">直流电源模块</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;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;" />3.</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">＋</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">3.5V</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">、</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">±5.3V</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">、</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">±15V</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">和＋</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">48V</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">直流电源模块</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;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;" />4.+12V </span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">直流电源电压变换、监测和分配电路板（以下称</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">A</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">板）</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;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;" />5.</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">＋</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">3.5V</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">、</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">±5.3V</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">、</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">±15V</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">和＋</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">48V</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">直流电源监测和分配电路板（以下称</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">B</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">板）</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;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;" />6.</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">高压电源模块</span></p><p style="margin-bottom: 0.1px;max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);line-height: 19px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;"><br /></span></p><p style="margin-bottom: 0.1px;max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);line-height: 19px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">220V</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">交流电经一个继电器向直流电源模块供电，直流电源模块的输出经电压监测和分配板送到后端和前端电路。辅助电源＋</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">12VSB</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">经</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">220V</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">交流直接供电，一旦合上电源开关，就开始工作，蓝色的电源指示灯点亮。＋</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">12VSB</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">负责向</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">A</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">板和</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">B</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">板提供待机电源，同时</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">B</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">板将＋</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">12VSB</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">变换成＋</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">5VSB</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">向后端电路供电。</span></p><p style="margin-bottom: 0.1px;max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);line-height: 19px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;"><br /></span></p><p style="margin-bottom: 0.1px;max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);line-height: 19px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">当按下开机键（</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">On/Standy</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">）时，后端电路中的开机控制电路发出一个</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">S_ON</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">的信号，该信号传递到</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">B</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">板，</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">B</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">板即发出一个驱动继电器闭合的</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">ower_on</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">信号。继电器闭合之后，直流电源模块开始工作，输出系统运行所需的各路电压，经过</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">A</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">板和</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">B</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">板提供给前端和后端电路。在</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">A</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">板和</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">B</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">板上均有电压窗口比较器，对各路直流电压进行监视，当各路电源的输出电压在允许的范围内时，</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">A</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">板和</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">B</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">板将输出一个</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">DC_OK</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">信号，经过</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">“</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">与</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">”</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">运算之后，形成</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">W_GOOD</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">信号，通知主板电源正常，系统可以初始化。如果直流电源的输出电压过高或过低，</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">A</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">板和</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">B</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">板上的保护电路则不能产生正常的</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">DC_OK</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">信号，从而系统主板也不能得到</span><span style="max-width: 100%;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">W_GOOD</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">信号，将会撤去继电器的驱动信号，继电器失电之后将交流输入断开，彻底切断主机的供电，从而保障系统的安全。</span></p><p style="margin-bottom: 0.1px;max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);line-height: 19px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;"><br /></span></p><p style="margin-bottom: 0.1px;max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);line-height: 19px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">在研究清楚电源部分的基本原理之后，结合故障现象，之所以开机之后不久突然断电，肯定是保护电路部分动作引起的。可以推断，故障可能是直流电源模块损坏，也可能是保护电路自身损坏。</span></p><p style="margin-bottom: 0.1px;max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);line-height: 19px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;"><br /></span></p><p style="max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);box-sizing: border-box !important;word-wrap: break-word !important;"><strong><span style="max-width: 100%;font-size: 14px;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">故障排除</span></strong><span style="max-width: 100%;font-size: 14px;font-family: Helvetica, sans-serif;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><span style="max-width: 100%;font-size: 14px;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">首先，对直流电源模块进行测试。将两个电源模块从电源箱内拆卸出来，直接接入</span><span style="max-width: 100%;font-size: 14px;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">220V</span><span style="max-width: 100%;font-size: 14px;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">交流电源，检测每一组的输出电压，结果正常。然后，对位于</span><span style="max-width: 100%;font-size: 14px;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">B</span><span style="max-width: 100%;font-size: 14px;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">板上的保护电路部分进行检测。经反复检测和试验，发现该板上的一个</span><span style="max-width: 100%;font-size: 14px;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">ICABT573AD</span><span style="max-width: 100%;font-size: 14px;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">（带输出三态门的</span><span style="max-width: 100%;font-size: 14px;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">8D</span><span style="max-width: 100%;font-size: 14px;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">锁存器）损坏，结果导致</span><span style="max-width: 100%;font-size: 14px;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">A</span><span style="max-width: 100%;font-size: 14px;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">板传送过来的</span><span style="max-width: 100%;font-size: 14px;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">DC_OK</span><span style="max-width: 100%;font-size: 14px;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">信号短路，导致保护电路判断为</span><span style="max-width: 100%;font-size: 14px;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">A</span><span style="max-width: 100%;font-size: 14px;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">板的电源不正常，从而切断交流电源。更换一块新的</span><span style="max-width: 100%;font-size: 14px;font-family: Helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;">ABT573AD</span><span style="max-width: 100%;font-size: 14px;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;">，系统恢复正常，故障排除。</span></p><p style="max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;"><br /></span></p><p style="max-width: 100%;min-height: 1em;white-space: pre-wrap;color: rgb(62, 62, 62);box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;"><br /></span></p><p style="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;white-space: normal;font-size: 16px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);text-align: center;font-family: 微软雅黑;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;">赞<span style="max-width: 100%;line-height: 25px;box-sizing: border-box !important;word-wrap: break-word !important;">是一种友谊 | </span><span style="max-width: 100%;line-height: 25px;color: rgb(192, 0, 0);box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;">分享</strong></span><span style="max-width: 100%;line-height: 25px;box-sizing: border-box !important;word-wrap: break-word !important;">传递智慧</span></p><p style="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;white-space: normal;font-size: 16px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);text-align: center;font-family: 微软雅黑;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;letter-spacing: 0.5px;line-height: 28px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 15px;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;letter-spacing: 1px;line-height: 25.6px;white-space: pre;color: rgb(68, 68, 68);font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;color: rgb(95, 73, 122);font-size: 14px;line-height: 24.381px;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 18px;color: rgb(62, 62, 62);line-height: 25px;text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;white-space: normal;font-family: 微软雅黑;color: rgb(171, 25, 66);box-sizing: border-box !important;word-wrap: break-word !important;">，您身边专业超声维修专家</strong></span></strong></strong></strong></span></strong></p><p style="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;white-space: normal;font-size: 16px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);text-align: center;font-family: 微软雅黑;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;letter-spacing: 0.5px;line-height: 28px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 15px;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;letter-spacing: 1px;line-height: 25.6px;white-space: pre;color: rgb(68, 68, 68);font-family: 宋体;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;color: rgb(95, 73, 122);font-size: 14px;line-height: 24.381px;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 18px;color: rgb(62, 62, 62);line-height: 25px;text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;white-space: normal;font-family: 微软雅黑;color: rgb(171, 25, 66);box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;color: rgb(62, 62, 62);font-size: 15px;line-height: 24px;box-sizing: border-box !important;word-wrap: break-word !important;">超声一站式服务商</span></strong></span></strong></strong></strong></span></strong></p><p style="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;text-align: justify;white-space: normal;font-size: 16px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);font-family: 微软雅黑;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;text-indent: 0em;font-family: Arial, Verdana, sans-serif;line-height: 1.75em;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 </span></p><p style="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;text-align: justify;text-indent: 0em;white-space: normal;font-size: 12px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);font-family: Arial, Verdana, sans-serif;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;line-height: 1.75em;box-sizing: border-box !important;word-wrap: break-word !important;">邮编：510507</span></p><p style="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;text-align: justify;text-indent: 0em;white-space: normal;font-size: 12px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);font-family: Arial, Verdana, sans-serif;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">电话：(+86)020-8722 8723 8764 5360 </span></p><p style="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;text-align: justify;text-indent: 0em;white-space: normal;font-size: 12px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);font-family: Arial, Verdana, sans-serif;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">传真：020-8722 8623</span></p><p style="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;text-align: justify;text-indent: 0em;white-space: normal;font-size: 12px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);font-family: Arial, Verdana, sans-serif;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><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="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;text-align: justify;text-indent: 0em;white-space: normal;font-size: 12px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);font-family: Arial, Verdana, sans-serif;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;line-height: 24.381px;box-sizing: border-box !important;word-wrap: break-word !important;">公司官网：http://www.parts-ultrasound.com/</span><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;"></span></p><p style="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;text-align: justify;white-space: normal;font-size: 16px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);font-family: 微软雅黑;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;line-height: 1.75em;text-indent: 0em;font-size: 14px;font-family: Arial, Verdana, sans-serif;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;letter-spacing: 0.544px;white-space: normal;font-size: 16px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);line-height: 25.6px;text-align: center;font-family: 微软雅黑;box-sizing: border-box !important;word-wrap: break-word !important;"><img class="" data-ratio="1" data-s="300,640" data-type="jpeg" data-w="258" width="auto" src="http://mmbiz.qpic.cn/mmbiz_jpg/dx3KibwtDhvfh2wVX4NftfnfjcZWIKK6EQDWtTTsYwjfQBnsqkThAZP5OlDmg5S3g22gSqMWhAxr2O4MydSJHnQ/640?wx_fmt=jpeg" style="float: left;box-sizing: border-box !important;word-wrap: break-word !important;visibility: visible !important;width: auto !important;" /></p><p style="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;text-align: justify;text-indent: 0em;white-space: normal;font-size: 12px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);font-family: Arial, Verdana, sans-serif;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">维修咨询：QQ: 712638 404</span><br style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;" /></p><p style="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;text-align: justify;text-indent: 0em;white-space: normal;font-size: 12px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);font-family: Arial, Verdana, sans-serif;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">设备咨询: QQ: 712638 405</span></p><p style="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;text-align: justify;white-space: normal;font-size: 16px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);font-family: 微软雅黑;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;font-family: Arial, Verdana, sans-serif;line-height: 1.75em;text-indent: 0em;box-sizing: border-box !important;word-wrap: break-word !important;">软件咨询：QQ: 712638 406</span><br style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;" /></p><p style="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;text-align: justify;text-indent: 0em;white-space: normal;font-size: 12px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);font-family: Arial, Verdana, sans-serif;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">配件咨询：QQ: 712638 407</span></p><p style="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;text-align: justify;text-indent: 0em;white-space: normal;font-size: 12px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);font-family: Arial, Verdana, sans-serif;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><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="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;text-align: justify;text-indent: 0em;white-space: normal;font-size: 12px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);font-family: Arial, Verdana, sans-serif;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">阿里店铺网址：https://renchengyiliao.1688.com</span></p><p style="margin-bottom: 5px;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;text-align: justify;text-indent: 0em;white-space: normal;font-size: 12px;background-color: rgb(255, 255, 255);color: rgb(62, 62, 62);font-family: Arial, Verdana, sans-serif;line-height: 2em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">电子邮箱：sales@parts-ultrasound.com</span></p>
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发表于 2020-10-19 22:47:22