HP 6720s HP Compaq 6720s Notebook PC - Maintenance and Service Guide - Page 86

ExpressCard assembly, Hard drive see

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2. Remove the RTC battery from the socket on the system board. Reverse this procedure to install the RTC battery. ExpressCard assembly Description ExpressCard assembly Spare part number 456607-001 Before removing the ExpressCard assembly, 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 39). 5. Remove the following components: a. Hard drive (see Hard drive on page 40) b. Optical drive (see Optical drive on page 46) c. Keyboard (see Keyboard on page 50) d. Switch cover (see Switch cover on page 47) e. Speaker (see Speaker on page 53) f. Display lid switch module (see Display lid switch module on page 54) g. Display assembly (see Display assembly on page 55) 78 Chapter 4 Removal and replacement procedures

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2
.
Remove the RTC battery from the socket on the system board.
Reverse this procedure to install the RTC battery.
ExpressCard assembly
Description
Spare part number
ExpressCard assembly
456607-001
Before removing the ExpressCard assembly, 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
39
).
5
.
Remove the following components:
a
.
Hard drive (see
Hard drive
on page
40
)
b
.
Optical drive (see
Optical drive
on page
46
)
c
.
Keyboard (see
Keyboard
on page
50
)
d
.
Switch cover (see
Switch cover
on page
47
)
e
.
Speaker (see
Speaker
on page
53
)
f
.
Display lid switch module (see
Display lid switch module
on page
54
)
g
.
Display assembly (see
Display assembly
on page
55
)
78
Chapter
4
Removal and replacement procedures