Compaq Presario CQ40-400 Compaq Presario CQ40 Notebook PC - Maintenance and Se - Page 56

Power button board, Remove the Phillips PM2.5×3.0 screw

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Power button board Description Power button board Spare part number 492249-001 Before removing the power button board, follow these steps: 1. Shut down 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 all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). 5. Remove the following components: a. Optical drive (see Optical drive on page 35) b. Hard drive (see Hard drive on page 36) c. Keyboard (see Keyboard on page 44) d. Keyboard cover (see Keyboard cover on page 46) Remove the power button board: 1. Turn the keyboard cover display-side down. 2. Remove the Phillips PM2.5×3.0 screw (1) from the power button board. 3. Lift the power button board (2) up and away from the keyboard cover. Reverse this procedure to install the power button board. 48 Chapter 4 Removal and replacement procedures

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Power button board
Description
Spare part number
Power button board
492249-001
Before removing the power button board, follow these steps:
1.
Shut down 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 all external devices connected to the computer.
3.
Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the computer.
4.
Remove the battery (see
Battery
on page
34
).
5.
Remove the following components:
a.
Optical drive (see
Optical drive
on page
35
)
b.
Hard drive (see
Hard drive
on page
36
)
c.
Keyboard (see
Keyboard
on page
44
)
d.
Keyboard cover (see
Keyboard cover
on page
46
)
Remove the power button board:
1.
Turn the keyboard cover display-side down.
2.
Remove the Phillips PM2.5×3.0 screw
(1)
from the power button board.
3.
Lift the power button board
(2)
up and away from the keyboard cover.
Reverse this procedure to install the power button board.
48
Chapter 4
Removal and replacement procedures