Remove The Upper Case(With Keyboard) - Lenovo IdeaPad S540-14IML Hardware Maintenance Manual

Figure 37. Remove the system board

Remove the upper case(with keyboard)

Make sure the following FRUs (CRUs) have been removed.
"Remove the lower case" on page 33
"Remove the battery pack" on page 34
"Remove the Wi-Fi card" on page 38
Step 1. Disconnect the LCD cable.
Figure 38. Disconnect the LCD cable
Step 2. Remove the 4 screws that secure the hinges to the upper case.
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Hardware Maintenance Manual