Lenovo ThinkBook 15 Gen 2 Hardware Maintenance Manual page 56

Attention: Use your fingernails to pull the connector to unplug it. Do not pull the cable.
Step 2. Peel off the mylar.
Figure 34. Peel off the mylar
Step 3. Detach the antenna cable connectors and then disconnect the EDP cable form the system board.
Figure 35. Detach the antenna cable connectors and disconnect the EDP cable form the system board
Step 4. Rotate the LCD unit to an angle of more than 90 degrees and place the computer on a flat surface
as shown. Remove five screws and then remove the LCD unit.
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Hardware Maintenance Manual