5. Remove the bottom cover from the top cover.
Reverse this procedure to install the bottom cover.
Power button board
Description Spare part number
Power button board (includes cable) 730899-001
Before removing the power button board, follow these steps:
1. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 40), and then remove the following components:
a. Service door (see
Service door on page 41)
b. Display assembly (see
Display assembly on page 53)
c. Bottom cover (see
Bottom cover on page 61)
Remove the power button board:
1. Remove the two Phillips PM2.0×2.75 screws (1) that secure the power button board to the
top cover.
2. Detach the power button board cable (2) from the top cover. (The power button board cable is
attached to the top cover with double-sided tape.)
Component replacement procedures 63
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