HP 6720s User Manual

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 37).
5.
Remove the following components:
a.
Hard drive (see
Hard drive on page 38)
b.
Optical drive (see
Optical drive on page 44)
c.
Keyboard (see
Keyboard on page 46)
d.
Switch cover (see
Switch cover on page 48)
e.
Speaker (see
Speaker on page 50)
f.
Display lid switch module (see
Display lid switch module on page 51)
g.
Display assembly (see
Display assembly on page 52)
Component replacement procedures 75

HP 6720s Specifications

General

RAM Type	DDR2
Storage	120 GB HDD
Display	15.4-inch
Screen Resolution	1280 x 800
Graphics	Intel GMA X3100
Wireless	802.11a/b/g
Processor	Intel Core 2 Duo
Operating System	Windows Vista
Weight	2.5 kg
Chipset	Intel GM965
Optical Drive	DVD±RW
RAM	1 GB (upgradable to 4 GB)