HP EliteBook 725 G2 Maintenance And Service Manual page 89

3. Disconnect all external devices from the computer.
4. Remove the service cover (see
a. Battery (see Battery on page
b. Hard drive (see
c. Keyboard (see
d. RTC battery (see
e. Top cover (see
f. Heat sink (see
g. Fan (see Fan on page
NOTE: 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:
●
WWAN module (see
●
Solid-state drive (see
●
WLAN module (see
●
Memory modules (see
Remove the system board:
1. Turn the top cover upside down with the front toward you.
2. Release the ZIF connector (1) to which the power button board cable is attached, and then disconnect
the power button board cable from the system board.
Service cover on page
40)
Hard drive on page 42)
Keyboard on page 52)
RTC battery on page 57)
Top cover on page 58)
Heat sink on page 71)
73)
WWAN module on page
Solid-state drive on page
WLAN module on page 49)
Memory module on page
38), and then remove the following components:
45)
47)
51)
Component replacement procedures 77