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rel="nofollow">成都鐳伙科技有限公司</a></p><p><span>聯(lián)系人：</span>邱鋒</p><p><span>郵箱: </span>cdleihuokeji@163.com</p><p><span>電話: </span>13982269628</p><p><span>傳真: </span>028_</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>028-8444323</p><p><span>地址: </span>新都區(qū)踏水路創(chuàng)想大廈2單元2606</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="lfthn9n" class="page-proshow02"><p class="title">詳細說明</p><div id="p7vtvpl" class="box"><p><p> XG一200C型X線機一特殊故障的維修故障現(xiàn)象：當(dāng)按通電源按鈕，立即產(chǎn)生限時曝光，而后再按PA鈕時反而無曝光。故障分析：開機限時器即工作，由電路圖分析可知，只可能是限時器JSB直接得電工作，之后按PA按鈕無曝光說明JBS一直得電，所以不會產(chǎn)生二次曝光，惠州奧林巴斯UES40高頻電刀主機芯片級維修，筆者認為，造成JSB直接工作的可能性只有210接點或262接點對地或者對102短路。故障檢修：先將P1、P2兩點拆開，為了區(qū)分210或262接點對地短路。將技術(shù)選擇開關(guān)至于空檔位置，用萬用表RXl檢測控制臺210接點對地電阻為o(如果對地電阻為無窮大，則測262接點對地是否短路，如262接點對地仍為無窮大，說明210點或262點對102點短路)。然后拔去控制臺下面通向平床濾線器線的插頭L，再測控制臺210接點對地阻值為無窮大，原因進一步縮小在濾線器床上，惠州奧林巴斯UES40高頻電刀主機芯片級維修。為了查找**終問題，將濾線床上Z7頭拔下測量插座210點對地電阻為o，因此可以肯定濾線器上210點對地短路。打開蓋板發(fā)現(xiàn)LDJ常閉接點210和204對裝片合的槽鋼架碰形成短路。因而造成了本文開始的特殊現(xiàn)象。本故障是因靠濾線器繼電器一側(cè)的片槽鋼架一端二個螺絲掉下，醫(yī)生在裝或取片盒時引起片槽架向外傾斜，碰到210接點，形成短路所造成。將槽鋼架二個螺絲重新固定開機試驗，惠州奧林巴斯UES40高頻電刀主機芯片級維修。然后再次按下控制面板右上角的“Support”按鈕，就回到了二維操作界面?；葜輮W林巴斯UES40高頻電刀主機芯片級維修</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="惠州奧林巴斯UES40高頻電刀主機芯片級維修,UES40" src="https://tyunfile.71360.com/WaterMark/UploadFile/leihuo/637397532491920781/9662491.png"></div><p> 故障：現(xiàn)象屏幕無顯示，且風(fēng)扇也不轉(zhuǎn)分析與處理：該機維修年后出現(xiàn)同樣故障現(xiàn)象。在現(xiàn)場，發(fā)現(xiàn)臺交流穩(wěn)壓電源串聯(lián)后，再給供電。去掉臺交流穩(wěn)壓電源，直接將輸入，仍然沒有顯示，查外部保險絲正常?？梢源_定儀器已經(jīng)損壞。于是打開機器，取出電源盒，重點檢查等，都沒有明顯損壞，各級輸出無短路現(xiàn)象，其他元件也沒有明顯損壞，切的集電極已經(jīng)有電壓?？紤]到的故障率比較高，于是買一個，更換后電源工作正常。討論一下為什么第二次損壞？我認為是由于串聯(lián)的個交流穩(wěn)壓電源引起的。這個交流穩(wěn)壓電源都屬于參數(shù)調(diào)整型交流穩(wěn)壓電源，即由一個飽和電抗和一個電容并聯(lián)而成。交流穩(wěn)壓電源的等效阻抗隨時在變化，當(dāng)還沒有進入飽和時，等效阻抗呈容性；當(dāng)進入飽和時，等效阻抗呈感性。故首先個交流穩(wěn)壓電源輸出受第二個交流穩(wěn)壓電源等效阻抗的影響，輸出波形有較多的諧波（作為第二個交流穩(wěn)壓電源的輸入）。而參數(shù)調(diào)整型交流穩(wěn)壓電源對電源的頻率非常敏感，所以第二個交流穩(wěn)壓電源的輸出電壓的輸入）隨工作頻率的變化而變化。在第二個交流穩(wěn)壓電源的輸出電壓瞬間偏高時被損壞?？偨Y(jié)2次維修，開關(guān)電源不起振一般有種情況。一是電源部件故障，二是負載短路引起電源自動保護?；葜輮W林巴斯UES40高頻電刀主機芯片級維修早上要先開空調(diào)，將室溫控制在適宜范圍，并保持一定時間，之后再開啟超聲設(shè)備。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="惠州奧林巴斯UES40高頻電刀主機芯片級維修,UES40" src="https://tyunfile.71360.com/WaterMark/UploadFile/leihuo/637397532491969611/9070562.png"></div><p> SIMENSSoronaE牙科綜合治理臺，功能齊全，使用方便，在我國大型醫(yī)院中有一定的占有量。其設(shè)計獨特，電路由8048單片機控制，檢修較一般治理臺復(fù)雜。**近，筆者檢修了一臺幾個故障混雜在一起的治理臺，過程曲折。故障現(xiàn)象：治理臺失去所有功能檢修過程：治理臺電源、水壓正常，但氣壓表無指示。檢查發(fā)現(xiàn)壓縮空氣管道中有大量水，放氣排凈水后，氣壓表出現(xiàn)指示，但治理臺仍不能動作，手機瞬間噴氣、水后，氣壓迅速下降為零。關(guān)氣路閥門，釋放管道內(nèi)剩余氣壓后，再開閥，現(xiàn)象重復(fù)。說明在管道內(nèi)無壓力的情況下，壓縮空氣可以沖過機內(nèi)閥門。解剖此閥發(fā)現(xiàn)其構(gòu)造獨特，*在加電情況下，閥并不打開，只有同時外加氣壓達定值，閥門才能打開，起到了氣壓檢測和失壓保護的作用。檢查電路發(fā)現(xiàn)電源接通時，該閥無額定的24V直流電壓。檢查主電路（P板），發(fā)現(xiàn)插座X9處有一灘銅綠狀斑跡，酒精洗凈后，發(fā)現(xiàn)印刷電路燒斷，電路板局部炭化。清理炭化物后恢復(fù)連接，故障依舊。從電路看，多處標(biāo)有直流24V，經(jīng)分析該直流由橋VEO整流交流20V電壓獲得，但現(xiàn)無交流電壓。順圖發(fā)現(xiàn)交流20V熔斷F13燒毀，更換后該直流電壓正常，機器氣壓恢復(fù)后，各種手機及光固化等功能均正常。治理臺也可升降。</p><p> 懷疑鍵盤及接收電路有問題，檢查薄膜按鈕開關(guān)，發(fā)現(xiàn)按鈕的插頭處斷裂，更換之，機器正常。故障現(xiàn)象：洗液不能從清洗頭出來，洗液瓶正壓太高，使輸液管從洗液瓶中沖出。解決方法：a.檢查被電磁閥控制的硅膠管無阻塞和粘接現(xiàn)象。b.發(fā)現(xiàn)電磁閥動作力度不夠，檢查其驅(qū)動電壓，正常時應(yīng)為12V，但在電磁閥動作時下降到，懷疑提供驅(qū)動電壓的三端穩(wěn)壓器78S12負載能力下降，更換78S12，故障依然存在，并且78s12的溫度很快升高，仔細檢查線路，發(fā)現(xiàn)78s12的輸出電壓提供給7805作為輸入電壓，懷疑是7805老化，從78s12吸取大量的電流，使電磁閥動作電流不夠，更換7805，重新開機，故障消失。故障現(xiàn)象：機器執(zhí)行清洗時洗耳恭聽板一直向前走。解決方法：初步懷疑是檢測洗板步進的光耦失效，拆開機器，檢測光耦并未失效，執(zhí)行洗板時內(nèi)部傳動裝置步進動作正常，合上機蓋，放上載板臺，故障再次出現(xiàn)，經(jīng)仔細觀察，發(fā)現(xiàn)時由于傳動齒形帶松動，不入載板臺時傳動裝置能夠正常通過光耦，放到載板臺時，由于磁力作用，使傳動裝置脫離光耦，從而使光耦沒有檢測到步進板也的信號，重新調(diào)整傳動齒形帶的松緊程度，故障即可消失。超聲設(shè)備在設(shè)計時會考慮到散熱降溫的環(huán)節(jié)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="惠州奧林巴斯UES40高頻電刀主機芯片級維修,UES40" src="https://tyunfile.71360.com/UploadFile/leihuo/637397532521979352/5830226.png"></div><p> 在洗板機左手邊有一個不銹鋼的桿，用于抬高清洗頭，其頂端為一個圓形螺釘，其下為一防松螺釘。用MK3扳手擰松防松螺釘，轉(zhuǎn)動圓形螺釘來調(diào)節(jié)高度。故障現(xiàn)象：泵后部噴出大量液體，洗板不能正常進行。解決方法：a.廢液瓶已滿。不及時處理廢液，廢液通過緩沖瓶和負壓泵，從泵后部噴嘴噴出。這樣會腐蝕負壓泵，造成負壓泵壓力減小，洗液不能抽取干凈。b.廢液瓶沒固定。瓶全傾倒，造成大量廢液進入緩沖瓶和負壓泵。故障現(xiàn)象：執(zhí)行洗板時，酶標(biāo)板托盤不運動。解決方法：a.清洗頭太低，擋住酶標(biāo)板移動，調(diào)節(jié)抬桿的高度。b.酶標(biāo)板托盤底部的磁鐵生銹，不能進行正常的運動傳送，更換磁鐵。c.機器內(nèi)部的傳動齒形條生銹造成傳動力矩增大，內(nèi)部的傳動被卡死，打開機器，除去鐵銹并加油。故障現(xiàn)象：打開電源，只有電源燈亮，機器不自檢，按鍵無反應(yīng)。解決方法：a.打開機器，電路板上有一個復(fù)位按鈕，按動復(fù)位按鈕，復(fù)位燈不亮，抬高清洗頭的偏心輪不轉(zhuǎn)動，懷疑等程序沒執(zhí)行，觀察CPU及晶振，發(fā)現(xiàn)晶振及振蕩電容旁有糊狀白色結(jié)晶物，可能是清洗液滲透而造成，用電吹風(fēng)加熱吹干，打開電源，機器正常。b.按動復(fù)位接鈕，復(fù)位燈亮，抬高清洗頭的偏心輪轉(zhuǎn)動一圈，證明CPU正常。否則將由于影響空氣流動而影響系統(tǒng)降溫的效果。惠州奧林巴斯UES40高頻電刀主機芯片級維修</p><p style="text-indent:25px">超聲設(shè)備作為精密的醫(yī)療設(shè)備，內(nèi)部電子系統(tǒng)極其復(fù)雜?；葜輮W林巴斯UES40高頻電刀主機芯片級維修</p><p> 但靠背卻只能向前不能向后，且向前90°后，再也不能動作。顯然，前面故障中還夾雜著靠背故障。從電路可見，升降、靠背、靠頭分別由三個**電機驅(qū)動?？勘畴姍C有三根接線：bl線為零線，sw線接交流220V時，br線為OV，電機正轉(zhuǎn)，靠背向前；反之，br線接電源時，靠背向后。電機的狀態(tài)取決于繼電器K1、K2,繼電器又受控于晶體管V16、Vl7、集成塊J8（4520）、J9（4516）、J14（4025）、J16（40106）。原理：按靠背按鈕時，經(jīng)一系列轉(zhuǎn)換，**終由JI4(4025，三3輸人或非門）的第三組或門的輸出9腳產(chǎn)生電壓跳變，觸發(fā)J8(4520，雙4位二進制同步加法計數(shù)器）的7腳R端，使其l腳CL端電壓由“0”跳變到“l(fā)”，觸發(fā)晶體管Vl6導(dǎo)通，繼電器K2接通直流24V吸合，其接點1、2閉合，將交流220V接人靠背電機，靠背動作。由于升降、靠背電機的電源均由插頭，顯然電源無故障。故首先測量J14的9腳，為5V高電平，按靠背按鈕時，沒有變化，而集成塊電源電壓正常，說明此前電路已有故障。檢查對稱升降電路，按按鈕時，J15的10腳電壓5V至0V跳變，證實了前面的判斷。J14的9腳和1、2、8腳組成或非門，邏輯功能為Y=,1、2、8腳只要一個為“l(fā)”,9腳輸出就為“0”。電路是1腳接地，輸人為“0”，不影響輸出狀態(tài)?；葜輮W林巴斯UES40高頻電刀主機芯片級維修</p><p style="text-indent:25px">成都鐳伙科技有限公司是一家電子技術(shù)研究開發(fā)及轉(zhuǎn)讓、電氣設(shè)備、醫(yī)療設(shè)備維護服務(wù)、機械設(shè)備的設(shè)計、銷售；電器用品、醫(yī)療器械；貨物及技術(shù)進出口。專業(yè)維修直管硬鏡、攝像系統(tǒng)、冷光源、氣腹機、動力系統(tǒng)、灌注泵、動力系統(tǒng)手柄、超聲刀手柄。軟質(zhì)器械激光焊接。的公司，是一家集研發(fā)、設(shè)計、生產(chǎn)和銷售為一體的專業(yè)化公司。公司自創(chuàng)立以來，投身于內(nèi)窺鏡以及維修周邊，動力系統(tǒng)及手柄附件維修，攝像系統(tǒng)主機及攝像頭維修，手術(shù)器械類維修，是儀器儀表的主力軍。成都鐳伙科技不斷開拓創(chuàng)新，追求出色，以技術(shù)為先導(dǎo)，以產(chǎn)品為平臺，以應(yīng)用為重點，以服務(wù)為保證，不斷為客戶創(chuàng)造更高價值，提供更優(yōu)服務(wù)。成都鐳伙科技創(chuàng)始人張成亮，始終關(guān)注客戶，創(chuàng)新科技，竭誠為客戶提供良好的服務(wù)。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2931377.html</p></div></div></div></div></div><div id="9pntxdb" class="page-right twoColRt"><div id="xdhd7t7" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="xt9p9r9" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" 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