HP 655 HP 655 Notebook PC - Maintenance and Service Guide - Page 57

Top cover, TouchPad button board see

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Reverse this procedure to install the RTC battery. When installing the RTC battery, make sure the "+" sign faces up. Top cover Description Top cover (includes the TouchPad board) Spare part number 687703-001 Before removing the top cover, 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 35), and then remove the following components: a. Memory module/wireless module compartment cover (see Memory module on page 36) b. Keyboard (see Keyboard on page 39) c. Hard drive (see Hard drive on page 45) NOTE: When replacing the top cover, be sure to remove the following components from the defective top cover and install them on the replacement top cover: ● Power button board (see Power button board on page 52) ● TouchPad button board (see TouchPad button board on page 53) Remove the top cover: 1. Remove the six Phillips PM2.5×6.5 screws (1) and the two Phillips PM2.5×10.0 screws (2) that secure the top cover to the computer. Component replacement procedures 49

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Reverse this procedure to install the RTC battery. When installing the RTC battery, make sure the “+”
sign faces up.
Top cover
Description
Spare part number
Top cover (includes the TouchPad board)
687703-001
Before removing the top cover, 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
35
), and then remove the following components:
a.
Memory module/wireless module compartment cover (see
Memory module
on page
36
)
b.
Keyboard (see
Keyboard
on page
39
)
c.
Hard drive (see
Hard drive
on page
45
)
NOTE:
When replacing the top cover, be sure to remove the following components from the defective
top cover and install them on the replacement top cover:
●
Power button board (see
Power button board
on page
52
)
●
TouchPad button board (see
TouchPad button board
on page
53
)
Remove the top cover:
1.
Remove the six Phillips PM2.5×6.5 screws
(1)
and the two Phillips PM2.5×10.0 screws
(2)
that
secure the top cover to the computer.
Component replacement procedures
49