3.Remove the following screws that secure the top cover to the computer:

(1)3 Phillips PM2.0×4.0 screws from the optical drive bay

(2)3 Phillips PM2.5×2.5 broadhead screws from the battery bay

NOTE: The following image shows model 4530s. Model 4730s has 5 screws in the battery bay

4.Turn the computer upright and open it as far as possible.

5.Remove the 6 Torx T8M2.5×6.0 screws that secure the top cover to the computer.

NOTE: The following image shows model 4530s. Model 4730s has 3 screws on the top side of the top cover.

6.Remove the following cables from the system board:

Lift the connector latch (1) and disconnect the function board cable (2)

Disconnect the speaker cable (3)

Lift the connector latch (4) and disconnect the power button board cable (5)

Lift the connector latch (6) and disconnect the fingerprint reader board cable (7)

Component replacement procedures 67