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:
●
RTC battery (see
RTC battery on page 54
)
●
WLAN module (see
WLAN module on page 57
)
●
Memory modules (see
Expansion memory module on page 59
and
Primary memory module
on page 63
)
●
WWAN module (see
WWAN module on page 64
)
●
Processor (see
Processor on page 72
)
Remove the system board:
1.
Position the computer with rear panel toward you.
2.
Remove the four Phillips PM2.0×3.0 broad-head screws
(1)
and the two hex HM5.0×9.0 screw
locks
(2)
that secure the system board bracket to the base enclosure.
3.
Remove the system board bracket
(3)
.
4.
Position the computer with the front toward you.
5.
Disconnect the Bluetooth module cable
(1)
and the modem module cable
(2)
from the system
board.
NOTE:
Step 6 applies only to computer models not equipped with WWAN capability.
100 Chapter 4 Removal and replacement procedures
