d.
Top cover (see
e.
Fan and heat sink assembly (see
Fan and heat sink assembly on page 100
f.
Audio/USB 3.0 board on page 106
g.
Speakers (see
h.
ExpressCard/USB 2.0 assembly (see
ExpressCard/USB 2.0 assembly on page 113
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 modules (see
Memory Modules (under service door) on page 62
)
●
WLAN module (see
●
WWAN module (see
●
Modem module (see
)
●
Processor (see
)
●
Graphics card (see
●
Northbridge chip heat sink (see
Northbridge chip heat sink on page 115
)
Remove the system board:
1.
Position the computer right-side up, with the front toward you.
2.
Remove the tape
(1)
that secures the cabling to the system board.
3.
Remove the screws
(2)
that secure the plastic bracket to the system board, and then remove the
bracket
(3)
.
118
Chapter 4 Removal and replacement procedures