Apple Macbook Pro Aluminum 13-Inch Black Laptop Keyb Technical Guide - Page 23
Liquid Submersion Indicators, HT3425: About liquid submersion
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Liquid Submersion Indicators To help discover accidental damage to the computer, the top case includes spill sensors called liquid submersion indicators (LSI). The sensors are only visible when the bottom case and most of the modules have been removed. Normally represented by small white dots, the LSIs turn red (indicated by the four small, round dots shown below) when they have come in contact with liquid, such as an accidental spill. For more information, refer to the Knowledge Base article HT3425:"About liquid submersion indicators (LSI) on portable and desktop computers." 2010-06-15 MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting - Liquid Submersion Indicators 23
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MacBook (13-inch, Aluminum, Late 2008) General Troubleshooting — Liquid Submersion Indicators
23
2010-06-15
Liquid Submersion Indicators
To help discover accidental damage to the computer, the top case includes spill sensors called
liquid submersion indicators (LSI). The sensors are only visible when the bottom case and most
of the modules have been removed. Normally represented by small white dots, the LSIs turn
red (indicated by the four small, round dots shown below) when they have come in contact
with liquid, such as an accidental spill.
For more information, refer to the Knowledge Base article
HT3425: “About liquid submersion
indicators (LSI) on portable and desktop computers
.”