HP 520 HP 520 Notebook PC - Maintenance and Service Guide - Page 58

Base enclosure, Switch cover see

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Base enclosure Description Base enclosure Spare part number 438517-001 Before removing the base enclosure, 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 31). 5. Remove the following components: a. Hard drive (see Hard drive on page 32) b. Memory/WLAN module compartment cover (see Memory module on page 35) c. Optical drive (see Optical drive on page 39) d. Switch cover (see Switch cover on page 41) e. Keyboard (see Keyboard on page 43) f. Display assembly (see Display assembly on page 45) Remove the base enclosure: 1. Release the ZIF connector (1) to which the TouchPad cable is attached, and disconnect the TouchPad cable (2) from the system board. 2. Turn the computer upside down, with the front toward you. 50 Chapter 4 Removal and replacement procedures

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Base enclosure
Description
Spare part number
Base enclosure
438517-001
Before removing the base enclosure, 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
31
).
5
.
Remove the following components:
a
.
Hard drive (see
Hard drive
on page
32
)
b
.
Memory/WLAN module compartment cover (see
Memory module
on page
35
)
c
.
Optical drive (see
Optical drive
on page
39
)
d
.
Switch cover (see
Switch cover
on page
41
)
e
.
Keyboard (see
Keyboard
on page
43
)
f
.
Display assembly (see
Display assembly
on page
45
)
Remove the base enclosure:
1
.
Release the ZIF connector
(1)
to which the TouchPad cable is attached, and disconnect the TouchPad
cable
(2)
from the system board.
2
.
Turn the computer upside down, with the front toward you.
50
Chapter
4
Removal and replacement procedures