HP 245 HP 450 Notebook PC and HP 455 Notebook PC Maintenance and Service Guide - Page 75

Power button board, To remove the power button board

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Power button board Description Power button board (includes cable) Spare part number 685098-001 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 41), and then remove the following components: ● Memory module/wireless module compartment cover (see WLAN module on page 49) ● Hard drive (see Hard drive on page 54) ● Keyboard (see Keyboard on page 60) ● Top cover (see Top cover on page 63) To remove the power button board: 1. Turn the top cover upside down with the front toward you. 2. Remove the two Phillips PM2.0×3.0 screws (1) that secure the power button board to the top cover. 3. Remove the Mylar sheet covering the power button board (2). Component replacement procedures 67

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Power button board
Description
Spare part number
Power button board (includes cable)
685098-001
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
41
), and then remove the following components:
●
Memory module/wireless module compartment cover (see
WLAN module
on page
49
)
●
Hard drive (see
Hard drive
on page
54
)
●
Keyboard (see
Keyboard
on page
60
)
●
Top cover (see
Top cover
on page
63
)
To remove the power button board:
1.
Turn the top cover upside down with the front toward you.
2.
Remove the two Phillips PM2.0×3.0 screws
(1)
that secure the power button board to the
top cover.
3.
Remove the Mylar sheet covering the power button board
(2)
.
Component replacement procedures
67