Einleitung
Detailed steps to dissasemble to the logic board, then usefull pictures for rest of guide. (remember to add new thermal compound if you need to remove/replace fan assembly on processor and GPU)
Werkzeuge
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recommend to print out picture of the backside of the laptop and then use it as a template to place the screws on. They are many and different sizes.
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Remove all bottom screws and place on template printout.
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Remove DVD drive. Toggle the "play triangle" switch so that the tab extends. Pull the tab to remove the DVD drive.
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Remove hard drive
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Pull keyboard gently toward yourself. and then lift up untill flex is visible.
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use spudger to disconnect connector for keyboard.
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The rest of the guide is mosly helpfull pictures...
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Remove WLAN module by
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unplug carefully with spudger the two RF connectors to WLAN module.
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remove the two screws holding wlan module.
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lift up module 45 degress and pull outwards.
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usefull images showing most of main assembly.
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Removing RAM modules is usefull if the whole logic board needs to be taken out.
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From here on , unscrew everything - carefully note where screws belong. I used Ifixit magnetic mat and some note making.
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To reassemble your device, follow these instructions in reverse order.