d. Solid-state drive (see Solid-state drive (select products only) on page 41).
e. WWAN module (see WWAN module (select products only) on page 42).
f. WLAN module (see WLAN module on page 43).
g. Optical drive (see Optical drive on page 45).
h. Keyboard (see Keyboard on page 47).
i. Hinge covers (see Hinge cover on page 53).
j. Base enclosure (see Base enclosure on page 55).
Remove the system board:
1. Disconnect the RTC battery cable (2) and the power button board cable (2).
2. Loosen 3 P1 captive screws (1) on the fan, remove 4 M2x3L P1 screws (2) from the system board, and
remove 2 M2x3L screws from the ODD board (3).
58 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts