Lenovo 81WE00DDCC Hardware Maintenance Manual page 54

"Remove the heat sink" on page 34
"Remove the fan" on page 36
"Remove the solid-state drive" on page 37
"Remove the coin-cell battery" on page 39
"Remove the memory module" on page 40
"Remove the Wi-Fi card" on page 41
Step 1. Disconnect cables connected to the system board.
Figure 32. Disconnect cables
Step 2. Remove five screws.
Figure 33. Remove five screws
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IdeaPad 3 (14", 05), IdeaPad 3 (15", 05), IdeaPad 3 (17", 05) , IdeaPad Slim 3 (14", 05), IdeaPad Slim 3 (15", 05), IdeaPad Slim 3
(17", 05) Hardware Maintenance Manual