Power button board
NOTE: The power button board spare part kit does not include the power button board cable. The power
button board cable is available using spare part number L56908-001.
Table 5-14 Power button board description and spare part number information
Description Spare part number
In acid green nish L56907-001
In ghost white nish L57172-001
In ultraviolet nish L57173-001
Before removing the power button board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is o or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and then
unplugging the AC adapter from the computer.
4. Remove the bottom cover (see Bottom cover on page 32), and then remove the following components:
a. Battery (see Battery on page 36)
b. WLAN module (see WLAN module on page 39)
c. Solid-state drive (see Solid-state drive on page 41)
d. Hinge trunks(see Hinge trunks on page 44)
e. Fan brackets (see Fan brackets on page 45)
f. Fan/heat sink assembly (see Fan/heat sink assembly on page 46)
g. System board (see System board on page 56)
Remove the power button board:
1. Remove the Phillips M2.0×3.8 screw (1) that secures the power button board to the keyboard/top cover.
2. Lift the left side (2) of the power button board and swing it up and to the right until the tab on the right side
of the board is clear of the slot (3) built into the keyboard/top cover.
62 Chapter 5 Removal and replacement procedures
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