Power Button Board - HP EliteBook 8440W Maintenance And Service Manual

Removal and replacement procedures

Power button board

✎
The power button board spare part kit includes the cable.
Description
Power button board
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
5. Remove the following components:
d. Keyboard and switch cover (see
Remove the power button board:
1. Turn the switch cover over, with the front toward you.
2. Release the ZIF connector to which the power button board cable 1 connects to the LED board, and then
disconnect the cable from the LED board.
3. Remove the Phillips PM2.0×3.0 2 screw from the power button board.
4. Remove the power button board and cable 3.
Reverse this procedure to install the power button board.
4–26
"Battery" on page 4-7).
"Keyboard and switch cover" on page
Spare part number
594025-001
4-22)
Maintenance and Service Guide