Apple Technician Guide MacBook Pro (17-inch, Early 2009) - tim.id.au
Apple Technician Guide MacBook Pro (17-inch, Early 2009) - tim.id.au
Apple Technician Guide MacBook Pro (17-inch, Early 2009) - tim.id.au
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
2010-06-11<br />
Liqu<strong>id</strong> Submersion Indicators<br />
To help discover acc<strong>id</strong>ental damage to the computer, the top case includes spill sensors called<br />
liqu<strong>id</strong> submersion indicators (LSI). The sensors are visible when the bottom case and most of<br />
the modules have been removed. Normally represented by small white dots, the LSIs turn red<br />
(indicated by the small, areas circled below) when they have come in contact with liqu<strong>id</strong>, such<br />
as an acc<strong>id</strong>ental spill.<br />
For more information, refer to the Knowledge Base article HT3425: http://support.apple.com/<br />
kb/HT3425?viewlocale=en_US.”<br />
Common Reset <strong>Pro</strong>cedures<br />
When a reset procedure is required for troubleshooting, follow the applicable steps:<br />
Resetting the System Management Controller (SMC)<br />
The System Management Controller is an integrated circuit (computer chip) that is on the<br />
logic board. As the name implies, it is responsible for power management of the computer. It<br />
controls backlighting, hard drive spin down, sleep and wake, some charging aspects, trackpad<br />
control, and some input/output as it relates to the computer sleeping.<br />
Over <strong>tim</strong>e, the settings in the System Management Controller may become unusable, which<br />
<strong>MacBook</strong> <strong>Pro</strong> (<strong>17</strong>-<strong>inch</strong>, <strong>Early</strong> <strong>2009</strong>) General Troubleshooting — Liqu<strong>id</strong> Submersion Indicators 25
Change language