philips brilliance 16/ ct 描架不上电

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                    <p><p><img src="image/20201019/1bd08b695d5fd805cb63ee05a2610294_1.jpg" /></p></p><p><strong><span><span>一，故障现象</span></span></strong><span>:<span>医院突然断电后，导致机架不上电，故障现象主要表现为开机后 会提示宁钥匙，宁完钥匙后，继电器</span><span>1</span><span>（位于机架右侧下方）吸合了，</span><span>5</span><span>秒后</span><span>mdk 2</span><span>吸合机架也开始转了，但是转几圈大约</span><span>10s</span><span>继电器又自动弹出来了，最大那个</span><span>MDK3</span><span>不吸盒了（正常情况下吸合就可以上电），从而机架上电失败。观察</span><span>accu </span><span>板上的指示灯，</span><span>system </span><span>先亮后灭。</span></span></p><p><p><img src="image/20201019/d09f4819ea631b263674ef4645c5e952_2.png" /></p></p><p><span><span></span></span><br  /></p><p><strong><span><span>二故障分析</span></span></strong><span>:<span>在后台</span><span>philips_service ,service _only -viewlog –errors -off or. On -apply </span></span></p><p><span><span>方法</span>2<span>，</span><span>C </span><span>盘</span><span>–usr -service tool.-bin -diamon. Root index </span></span></p><p><span><span>看错误日志：</span>C<span>：</span><span>\usr\diamond,root\bin\ServiceTools\index,htm</span></span></p><p><span><span>本次由于系统有问题，错误日志无法查看，只能依靠故障表现来排查</span></span></p><p><span>1<span>，检查机架右侧损保险 和高压上的保险都正常 </span></span></p><p><span>2 <span>在</span><span>ghost</span><span>板上有个短接端子，找了根线短接了，机架可以上电了，排除了机架。</span></span></p><p><span>3.<span>检查床，床输入电电压</span><span>121 v</span></span></p><p><span>&nbsp;4. ccc <span>显示</span><span>22</span><span>正常，</span></span></p><p><span>5.<span>电源控制板</span><span>PCB power </span><span>俩个保险，和电源盒（小铁盒输入</span><span>121v </span><span>）一个保险，</span><span>F4 F5</span><span>也都正常，</span><span>Ipc power </span><span>板指示灯也异常，有部分指示灯不亮</span></span></p><p><span>6.<span>床俩边压敏开关测试也正常</span><span>.</span><span>测量阻值正常</span></span></p><p><span>7.<span>测量轴向驱动逆变</span><span>inveter, </span><span>未有</span><span>230v </span><span>电压</span><span>:=(121</span><span>变压</span><span>230)</span><span>且指示灯也异常</span></span></p><p><span>8.ACS<span>指示灯异常，数码管无显示，初步怀疑</span><span>acs </span><span>，跟换</span><span>acs, &nbsp;</span></span></p><p><span>9.<span>电路图理论分析如下图</span></span></p><p><span><span>一，</span>e-stop <span>回路分析，</span><span>can</span><span>通讯，回路串联连接，其中任一环节出问题都会机架不上电，具体如下</span></span></p><p><p><img src="image/20201019/ee1cdd6e9461e7ea17a33d8a94093a13_3.png" /></p></p><p><span><span></span></span><br  /></p><p><span>&nbsp;</span></p><p><strong><span><span>三，更换</span>ACS </span></strong></p><p><span>&nbsp;</span><span>&nbsp;&nbsp;</span><span>&nbsp;3.1<span>资料显示要做 </span><span>acs </span><span>硬件数据下载，为尝试</span></span></p><p><span>3.2<span>将床尾子拆去，或升到最高用绳子固定</span></span></p><p><span>3.3<span>将</span><span>Acs </span><span>的支撑板拆下，不用直接拆</span><span>acs </span><span>，很困难</span><span>.</span><span>做好线路标记</span></span></p><p><span>3.4<span>开机上电测试，机架正常上电，但是床不能垂直运动，只能升，不能降</span></span></p><p><span>3.5<span>需要先做 水平登录和垂直登录</span></span></p><p><span>3.51<span>水平登录，床升最高 手动进床极限位置，然后退出床</span><span>5-10cm (</span><span>否则通常会报错，不让预热，报</span><span>)</span><span>，穿头下面短接快关，然后拔开，在上电。</span><span>(</span><span>此项不能进后台做，否则不能实现断电记忆储存信息</span><span>)</span></span></p><p><span>3.52<span>进去后台，</span><span>service tool </span><span>做垂直登录，最高</span><span>1030</span><span>最低</span><span>56.succeed </span><span>自动断电</span></span></p><p><p><img src="image/20201019/4894b42a269f6a424da316c4cfdb5ea5_4.png" /></p></p><p><span><span>四，总结</span>4.1philips <span>机架不上电可分为三种情况</span></span></p><p><span>&nbsp;&nbsp;&nbsp;</span><span>&nbsp;</span><span><span>情况一</span>:</span><span>开机后，不提示拧钥匙。</span></p><p><span><span>情况二</span>:<span>开机后 提示拧钥匙，但是上电失败</span></span></p><p><span><span>情况</span> <span>三</span>:<span>宁完钥匙上电后，过会又掉电</span></span></p><p><span>&nbsp;</span></p><p><p><img src="image/20201019/c45f98969806b2f53bf344da75900d40_5.png" /></p></p><p><span></span><br  /></p><p><span><span>五，常见机架不上电解决方法</span></span></p><p><span>&nbsp;&nbsp;5.1<span>检查</span><span>7</span><span>个紧急开关</span></span></p><p><span><span>&nbsp;5.2 保险</span></span></p><p><span><span>六，如何判断</span>ACS <span>故障或者已经损坏</span></span></p><p><span>&nbsp;&nbsp;6.1<span>查看床尾的压敏开关是否有响应 &nbsp;</span></span></p><p><span>6.2<span>从床尾下面观察</span><span>ACS </span><span>的状态指示灯，正常时会有三个黄亮，如下图</span></span></p><p><span>6.3<span>检查</span><span>F 4</span><span>与</span><span>F 5</span><span>是否有电压输出</span><span>46v, </span><span>和</span><span>18v </span></span></p><p><span>6.3<span>因为轴向驱动电机</span><span>23v </span><span>是由输入机架输入</span><span>120</span><span>经过</span><span>ACS </span><span>在到逆变器变压来的，所以可测量其逆变的</span><span>UVW </span><span>或者查看逆变的指示灯状态</span></span></p><p><span>&nbsp;</span></p><p><p><img src="image/20201019/e8938d89e73e286bf9911ea78b67dd06_6.png" /></p></p><p><br  /></p><p><br  /></p><p><br  /></p><p><br  /></p><p><span></span><br  /></p><p><p><img src="image/20201019/7822a4e2249e86a45760fbbfc1675e38_7.gif" /></p></p><p><br  /></p><p><span>&nbsp;</span></p><p><strong><span>&nbsp;</span></strong></p><p><strong><span>&nbsp;</span></strong></p><p><strong><span>&nbsp;</span></strong></p><p><strong><span>&nbsp;</span></strong></p><p><strong><span>&nbsp;</span></strong></p><p><br  /></p>