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<!DOCTYPE html> <html class="client-nojs" lang="en" dir="ltr"> <head> <meta charset="UTF-8"/> <title>XO Immersion Repair - OLPC</title> <script>document.documentElement.className="client-js";RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy","wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"d8818a8d4c282794b5246fde","wgCSPNonce":false,"wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"XO_Immersion_Repair","wgTitle":"XO Immersion 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sitedir-ltr mw-hide-empty-elt ns-0 ns-subject page-XO_Immersion_Repair rootpage-XO_Immersion_Repair skin-vector action-view skin-vector-legacy vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-language-alert-in-sidebar-disabled vector-feature-sticky-header-disabled vector-feature-sticky-header-edit-disabled vector-feature-table-of-contents-disabled vector-feature-visual-enhancement-next-disabled"><div id="mw-page-base" class="noprint"></div> <div id="mw-head-base" class="noprint"></div> <div id="content" class="mw-body" role="main"> <a id="top"></a> <div id="siteNotice"></div> <div class="mw-indicators"> </div> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">XO Immersion Repair</span></h1> <div id="bodyContent" class="vector-body"> <div id="siteSub" class="noprint">From OLPC</div> <div id="contentSub"></div> <div id="contentSub2"></div> <div id="jump-to-nav"></div> <a class="mw-jump-link" href="#mw-head">Jump to navigation</a> <a class="mw-jump-link" href="#searchInput">Jump to search</a> <div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="en" dir="ltr"><div class="mw-parser-output"><p>This is a failure analysis of an XO laptop which had been immersed in water for several days. </p> <div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"><input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none" /><div class="toctitle" lang="en" dir="ltr"><h2 id="mw-toc-heading">Contents</h2><span class="toctogglespan"><label class="toctogglelabel" for="toctogglecheckbox"></label></span></div> <ul> <li class="toclevel-1 tocsection-1"><a href="#Summary"><span class="tocnumber">1</span> <span class="toctext">Summary</span></a></li> <li class="toclevel-1 tocsection-2"><a href="#Description"><span class="tocnumber">2</span> <span class="toctext">Description</span></a> <ul> <li class="toclevel-2 tocsection-3"><a href="#Display"><span class="tocnumber">2.1</span> <span class="toctext">Display</span></a></li> <li class="toclevel-2 tocsection-4"><a href="#Battery"><span class="tocnumber">2.2</span> <span class="toctext">Battery</span></a></li> <li class="toclevel-2 tocsection-5"><a href="#Motherboard"><span class="tocnumber">2.3</span> <span class="toctext">Motherboard</span></a></li> <li class="toclevel-2 tocsection-6"><a href="#Laptop_Bottom"><span class="tocnumber">2.4</span> <span class="toctext">Laptop Bottom</span></a></li> <li class="toclevel-2 tocsection-7"><a href="#Keyboard"><span class="tocnumber">2.5</span> <span class="toctext">Keyboard</span></a></li> </ul> </li> </ul> </div> <h2><span class="mw-headline" id="Summary">Summary</span></h2> <p>After immersion in flood water for several days, an XO laptop should be completely discarded, with the possible exception of the display. Even if components continue to function, it is very likely that they will fail in the near future. </p> <h2><span class="mw-headline" id="Description">Description</span></h2> <p>OLPC received a laptop, CSN74800466, from a small school that had been flooded. </p><p>Upon receipt, the EC was operating (the battery LED indicated external power and battery charging), but the screen did not light up and no sound was heard on power up. </p> <h3><span class="mw-headline" id="Display">Display</span></h3> <p>The display showed serious corrosion on the backlight cable, and minor corrosion on the main display cable. After replacing the backlight (due to cable corrosion, the actual lightbar appeared fine), the display functioned correctly! </p> <ul class="gallery mw-gallery-traditional" style="max-width: 726px;"> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_Display1.JPG" class="image" title="Backlight cable"><img alt="Backlight cable" src="/mediawiki/images/thumb/d/de/XO_Immersion_Repair_Display1.JPG/320px-XO_Immersion_Repair_Display1.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/d/de/XO_Immersion_Repair_Display1.JPG/480px-XO_Immersion_Repair_Display1.JPG 1.5x, /mediawiki/images/thumb/d/de/XO_Immersion_Repair_Display1.JPG/640px-XO_Immersion_Repair_Display1.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>Backlight cable </p> </div> </div></li> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_Display2.JPG" class="image" title="Display cable"><img alt="Display cable" src="/mediawiki/images/thumb/1/13/XO_Immersion_Repair_Display2.JPG/320px-XO_Immersion_Repair_Display2.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/1/13/XO_Immersion_Repair_Display2.JPG/480px-XO_Immersion_Repair_Display2.JPG 1.5x, /mediawiki/images/thumb/1/13/XO_Immersion_Repair_Display2.JPG/640px-XO_Immersion_Repair_Display2.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>Display cable </p> </div> </div></li> </ul> <h3><span class="mw-headline" id="Battery">Battery</span></h3> <p>The battery contacts showed minor corrosion, but not in areas where the electrical connection is actually made. </p> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_Bat1.JPG" class="image" title="Battery contacts"><img alt="Battery contacts" src="/mediawiki/images/thumb/a/a7/XO_Immersion_Repair_Bat1.JPG/320px-XO_Immersion_Repair_Bat1.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/a/a7/XO_Immersion_Repair_Bat1.JPG/480px-XO_Immersion_Repair_Bat1.JPG 1.5x, /mediawiki/images/thumb/a/a7/XO_Immersion_Repair_Bat1.JPG/640px-XO_Immersion_Repair_Bat1.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>Battery contacts </p> </div> </div></li> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_Bat2.JPG" class="image" title="Laptop battery contacts"><img alt="Laptop battery contacts" src="/mediawiki/images/thumb/2/25/XO_Immersion_Repair_Bat2.JPG/320px-XO_Immersion_Repair_Bat2.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/2/25/XO_Immersion_Repair_Bat2.JPG/480px-XO_Immersion_Repair_Bat2.JPG 1.5x, /mediawiki/images/thumb/2/25/XO_Immersion_Repair_Bat2.JPG/640px-XO_Immersion_Repair_Bat2.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>Laptop battery contacts </p> </div> </div></li> </ul> <h3><span class="mw-headline" id="Motherboard">Motherboard</span></h3> <p>Upon disassembly, it was determined that the motherboard was seriously oxidized. The worst damage was to the power supply units and the WLAN. This was likely due to the battery keeping the VIN rail powered during the immersion: </p> <ul class="gallery mw-gallery-traditional" style="max-width: 726px;"> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_MB2.JPG" class="image" title="Battery charger"><img alt="Battery charger" src="/mediawiki/images/thumb/7/75/XO_Immersion_Repair_MB2.JPG/320px-XO_Immersion_Repair_MB2.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/7/75/XO_Immersion_Repair_MB2.JPG/480px-XO_Immersion_Repair_MB2.JPG 1.5x, /mediawiki/images/thumb/7/75/XO_Immersion_Repair_MB2.JPG/640px-XO_Immersion_Repair_MB2.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>Battery charger </p> </div> </div></li> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_MB3.JPG" class="image" title="Closeup of Battery Charger IC"><img alt="Closeup of Battery Charger IC" src="/mediawiki/images/thumb/1/1f/XO_Immersion_Repair_MB3.JPG/320px-XO_Immersion_Repair_MB3.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/1/1f/XO_Immersion_Repair_MB3.JPG/480px-XO_Immersion_Repair_MB3.JPG 1.5x, /mediawiki/images/thumb/1/1f/XO_Immersion_Repair_MB3.JPG/640px-XO_Immersion_Repair_MB3.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>Closeup of Battery Charger IC </p> </div> </div></li> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_MB4.JPG" class="image" title="Backlight Power Supply"><img alt="Backlight Power Supply" src="/mediawiki/images/thumb/1/1e/XO_Immersion_Repair_MB4.JPG/320px-XO_Immersion_Repair_MB4.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/1/1e/XO_Immersion_Repair_MB4.JPG/480px-XO_Immersion_Repair_MB4.JPG 1.5x, /mediawiki/images/thumb/1/1e/XO_Immersion_Repair_MB4.JPG/640px-XO_Immersion_Repair_MB4.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>Backlight Power Supply </p> </div> </div></li> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_MB5.JPG" class="image" title="+1.2V Supply"><img alt="+1.2V Supply" src="/mediawiki/images/thumb/4/4a/XO_Immersion_Repair_MB5.JPG/320px-XO_Immersion_Repair_MB5.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/4/4a/XO_Immersion_Repair_MB5.JPG/480px-XO_Immersion_Repair_MB5.JPG 1.5x, /mediawiki/images/thumb/4/4a/XO_Immersion_Repair_MB5.JPG/640px-XO_Immersion_Repair_MB5.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>+1.2V Supply </p> </div> </div></li> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_MB6.JPG" class="image" title="WLAN module"><img alt="WLAN module" src="/mediawiki/images/thumb/7/77/XO_Immersion_Repair_MB6.JPG/320px-XO_Immersion_Repair_MB6.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/7/77/XO_Immersion_Repair_MB6.JPG/480px-XO_Immersion_Repair_MB6.JPG 1.5x, /mediawiki/images/thumb/7/77/XO_Immersion_Repair_MB6.JPG/640px-XO_Immersion_Repair_MB6.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>WLAN module </p> </div> </div></li> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_MB7.JPG" class="image" title="WLAN module and +3.3V Supply"><img alt="WLAN module and +3.3V Supply" src="/mediawiki/images/thumb/2/2f/XO_Immersion_Repair_MB7.JPG/320px-XO_Immersion_Repair_MB7.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/2/2f/XO_Immersion_Repair_MB7.JPG/480px-XO_Immersion_Repair_MB7.JPG 1.5x, /mediawiki/images/thumb/2/2f/XO_Immersion_Repair_MB7.JPG/640px-XO_Immersion_Repair_MB7.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>WLAN module and +3.3V Supply </p> </div> </div></li> </ul> <p>One of the RTC battery holder contacts was seriously corroded: </p> <ul class="gallery mw-gallery-traditional" style="max-width: 1089px;"> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_MB1.JPG" class="image" title="RTC Battery Holder"><img alt="RTC Battery Holder" src="/mediawiki/images/thumb/4/44/XO_Immersion_Repair_MB1.JPG/320px-XO_Immersion_Repair_MB1.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/4/44/XO_Immersion_Repair_MB1.JPG/480px-XO_Immersion_Repair_MB1.JPG 1.5x, /mediawiki/images/thumb/4/44/XO_Immersion_Repair_MB1.JPG/640px-XO_Immersion_Repair_MB1.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>RTC Battery Holder </p> </div> </div></li> </ul> <p>The main connection to the display was relatively OK, but the backlight connector contacts were seriously corroded: </p> <ul class="gallery mw-gallery-traditional" style="max-width: 726px;"> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_MB8.JPG" class="image" title="Backlight Conn."><img alt="Backlight Conn." src="/mediawiki/images/thumb/3/32/XO_Immersion_Repair_MB8.JPG/320px-XO_Immersion_Repair_MB8.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/3/32/XO_Immersion_Repair_MB8.JPG/480px-XO_Immersion_Repair_MB8.JPG 1.5x, /mediawiki/images/thumb/3/32/XO_Immersion_Repair_MB8.JPG/640px-XO_Immersion_Repair_MB8.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>Backlight Conn. </p> </div> </div></li> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_MB9.JPG" class="image" title="Backlight Conn."><img alt="Backlight Conn." src="/mediawiki/images/thumb/c/c2/XO_Immersion_Repair_MB9.JPG/320px-XO_Immersion_Repair_MB9.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/c/c2/XO_Immersion_Repair_MB9.JPG/480px-XO_Immersion_Repair_MB9.JPG 1.5x, /mediawiki/images/thumb/c/c2/XO_Immersion_Repair_MB9.JPG/640px-XO_Immersion_Repair_MB9.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>Backlight Conn. </p> </div> </div></li> </ul> <h3><span class="mw-headline" id="Laptop_Bottom">Laptop Bottom</span></h3> <p>Opening up the bottom of the unit, the "hidden" battery connector showed serious corrosion on one pin. </p> <ul class="gallery mw-gallery-traditional" style="max-width: 726px;"> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_Bat3.JPG" class="image" title="Backlight Conn."><img alt="Backlight Conn." src="/mediawiki/images/thumb/2/28/XO_Immersion_Repair_Bat3.JPG/320px-XO_Immersion_Repair_Bat3.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/2/28/XO_Immersion_Repair_Bat3.JPG/480px-XO_Immersion_Repair_Bat3.JPG 1.5x, /mediawiki/images/thumb/2/28/XO_Immersion_Repair_Bat3.JPG/640px-XO_Immersion_Repair_Bat3.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>Backlight Conn. </p> </div> </div></li> </ul> <p>The connector between the KBC and the cable going to the motherboard showed only surface (non-contact) corrosion. The KBC itself only showed minor corrosion on the KBC chip. </p> <ul class="gallery mw-gallery-traditional" style="max-width: 726px;"> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_KBC1.JPG" class="image" title="KBC/MB cable"><img alt="KBC/MB cable" src="/mediawiki/images/thumb/6/6e/XO_Immersion_Repair_KBC1.JPG/320px-XO_Immersion_Repair_KBC1.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/6/6e/XO_Immersion_Repair_KBC1.JPG/480px-XO_Immersion_Repair_KBC1.JPG 1.5x, /mediawiki/images/thumb/6/6e/XO_Immersion_Repair_KBC1.JPG/640px-XO_Immersion_Repair_KBC1.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>KBC/MB cable </p> </div> </div></li> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_KBC2.JPG" class="image" title="KBC chip"><img alt="KBC chip" src="/mediawiki/images/thumb/1/1e/XO_Immersion_Repair_KBC2.JPG/320px-XO_Immersion_Repair_KBC2.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/1/1e/XO_Immersion_Repair_KBC2.JPG/480px-XO_Immersion_Repair_KBC2.JPG 1.5x, /mediawiki/images/thumb/1/1e/XO_Immersion_Repair_KBC2.JPG/640px-XO_Immersion_Repair_KBC2.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>KBC chip </p> </div> </div></li> </ul> <h3><span class="mw-headline" id="Keyboard">Keyboard</span></h3> <p>The keyboard showed corrosion on the flex cable connecting to the Keyboard Controller (KBC) PCB (not in the contact area, but destructive given the nature of flex cable traces.) The keyboard matrix itself almost survived. There was a small amount of corrosion between the membranes under the space key and the V key. </p> <ul class="gallery mw-gallery-traditional" style="max-width: 726px;"> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_KB1.JPG" class="image" title="Keyboard flex cable"><img alt="Keyboard flex cable" src="/mediawiki/images/thumb/1/1c/XO_Immersion_Repair_KB1.JPG/320px-XO_Immersion_Repair_KB1.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/1/1c/XO_Immersion_Repair_KB1.JPG/480px-XO_Immersion_Repair_KB1.JPG 1.5x, /mediawiki/images/thumb/1/1c/XO_Immersion_Repair_KB1.JPG/640px-XO_Immersion_Repair_KB1.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>Keyboard flex cable </p> </div> </div></li> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_KB2.JPG" class="image" title="Keyboard bottom membrane (space)"><img alt="Keyboard bottom membrane (space)" src="/mediawiki/images/thumb/d/d0/XO_Immersion_Repair_KB2.JPG/320px-XO_Immersion_Repair_KB2.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/d/d0/XO_Immersion_Repair_KB2.JPG/480px-XO_Immersion_Repair_KB2.JPG 1.5x, /mediawiki/images/thumb/d/d0/XO_Immersion_Repair_KB2.JPG/640px-XO_Immersion_Repair_KB2.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>Keyboard bottom membrane (space) </p> </div> </div></li> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_KB3.JPG" class="image" title="Keyboard top membrane"><img alt="Keyboard top membrane" src="/mediawiki/images/thumb/6/6b/XO_Immersion_Repair_KB3.JPG/320px-XO_Immersion_Repair_KB3.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/6/6b/XO_Immersion_Repair_KB3.JPG/480px-XO_Immersion_Repair_KB3.JPG 1.5x, /mediawiki/images/thumb/6/6b/XO_Immersion_Repair_KB3.JPG/640px-XO_Immersion_Repair_KB3.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>Keyboard top membrane </p> </div> </div></li> <li class="gallerybox" style="width: 355px"><div style="width: 355px"> <div class="thumb" style="width: 350px;"><div style="margin:15px auto;"><a href="/go/File:XO_Immersion_Repair_KB4.JPG" class="image" title="Keyboard bottom membrane (V)"><img alt="Keyboard bottom membrane (V)" src="/mediawiki/images/thumb/0/04/XO_Immersion_Repair_KB4.JPG/320px-XO_Immersion_Repair_KB4.JPG" decoding="async" width="320" height="240" srcset="/mediawiki/images/thumb/0/04/XO_Immersion_Repair_KB4.JPG/480px-XO_Immersion_Repair_KB4.JPG 1.5x, /mediawiki/images/thumb/0/04/XO_Immersion_Repair_KB4.JPG/640px-XO_Immersion_Repair_KB4.JPG 2x" /></a></div></div> <div class="gallerytext"> <p>Keyboard bottom membrane (V) </p> </div> </div></li> </ul>    </div> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="http://wiki.laptop.org/mediawiki/index.php?title=XO_Immersion_Repair&oldid=170315">http://wiki.laptop.org/mediawiki/index.php?title=XO_Immersion_Repair&oldid=170315</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/go/Special:Categories" title="Special:Categories">Categories</a>: <ul><li><a href="/go/Category:Hardware" title="Category:Hardware">Hardware</a></li><li><a href="/go/Category:Repair" title="Category:Repair">Repair</a></li></ul></div></div> </div> </div> <div id="mw-navigation"> <h2>Navigation menu</h2> <div id="mw-head"> <nav id="p-personal" class="vector-menu mw-portlet mw-portlet-personal vector-user-menu-legacy" aria-labelledby="p-personal-label" role="navigation" > <h3 id="p-personal-label" class="vector-menu-heading " > <span class="vector-menu-heading-label">Personal tools</span> </h3> <div class="vector-menu-content"> <ul class="vector-menu-content-list"><li id="pt-login" class="mw-list-item"><a href="/mediawiki/index.php?title=Special:UserLogin&returnto=XO+Immersion+Repair" title="You are encouraged to log in; 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