HP 6720s Maintenance And Service Manual page 71

Remove the battery (see
4.
Remove the following components:
5.
Hard drive (see
a.
Optical drive (see
b.
Keyboard (see
c.
Switch cover (see
d.
Speaker (see
e.
Display lid switch module (see
f.
Display assembly (see
g.
Top cover (see
h.
When replacing the system board, be sure that the following components are removed from the defective
system board and installed on the replacement system board:
Memory module (see
●
WLAN module (see
●
Processor (see Processor on page
●
ExpressCard assembly (see
●
Remove the system board:
Remove the RJ-11 jack (1) from the clip built into the base enclosure and remove the RJ-11 jack cable
1.
from the hook (2) built into the base enclosure.
Disconnect the fan cable (3) and the Bluetooth module cable (4) from the system board.
2.
Battery on page 37).
Hard drive on page
Optical drive on page
Keyboard on page 46)
Switch cover on page
Speaker on page 50)
Display lid switch module on page
Display assembly on page
Top cover on page 56)
Memory module on page
WLAN module on page
70)
ExpressCard assembly on page
38)
44)
48)
52)
43)
40)
75)
Component replacement procedures
51)
63