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How do I open the back pad on the bottom?

So I have a IdeaPad (series S340) to be exact a IdeaPad S340-15IWLTouch and I need to clean the fan, so I need to know how to open the back. I want to know what screw bit I need I have tried a T6 and a T5, because it has a star pattern on my like the screws. Any ideas?

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Can you please add a picture of the screws?

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Hi @randomuser2

Here’s the hardware maintenance manual for the laptop, taken from this webpage.

Go to p.44 to view the necessary pre-requisite steps and then the procedure to remove the fan. This starts by removing the back cover on p.33.

Note: Be sure remove the battery pack. disconnect it or remove it as soon as it is accessible to prevent any electrical problems when working inside a laptop e.g. accidentally slipping when using tools etc There is always power available on a motherboard even when the laptop is turned off. The power button is not a power isolating button. It merely signals the BIOS as to what the user wants to do. Think of the laptop as being in an extremely low power state when it is off rather than being totally isolated from the power supply. Reconnect the battery as late as possible in the reassembly process after the repair has been completed.

Unfortunately the manual doesn’t specify the screwhead size or type, only the dimensions of the screw. Note that there are 2 different sized screws holding the back cover 4 x 8mm and 6 x 4.5mm, M2 screws.

Even the parts list doesn’t show the screwhead type only the part number (5S10S35098) if you want all the screws for the laptop

You may just have to try using a screwdriver that works best.

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