HP EliteBook 720 Maintenance and Service Guide - Page 92

Power button board, System board see

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Power button board Description Power button board (includes cable) Spare part number 730552-001 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 service cover (see Service cover on page 37), and then remove the following components: a. Battery (see Battery on page 39) b. Hard drive (see Hard drive/solid-state drive on page 41) c. Keyboard (see Keyboard on page 50) d. Top cover (see Top cover on page 57) e. System board (see System board on page 76) Remove the power button board: 1. Remove the two Phillips PM2.0×3.25 screws (1) that secure the power button board to the top cover. 2. Remove the power button board (2) and cable. Reverse this procedure to install the power button board. 82 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts

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Power button board
Description
Spare part number
Power button board (includes cable)
730552-001
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 service cover (see
Service cover
on page
37
), and then remove the following components:
a.
Battery (see
Battery
on page
39
)
b.
Hard drive (see
Hard drive/solid-state drive
on page
41
)
c.
Keyboard (see
Keyboard
on page
50
)
d.
Top cover (see
Top cover
on page
57
)
e.
System board (see
System board
on page
76
)
Remove the power button board:
1.
Remove the two Phillips PM2.0×3.25 screws
(1)
that secure the power button board to the top cover.
2.
Remove the power button board
(2)
and cable.
Reverse this procedure to install the power button board.
82
Chapter 6
Removal and replacement procedures for Authorized Service Provider parts