display

System board
Description
Spare part number
System board (includes processor, replacement thermal material, and replacement thermal
material cleaning kit)
With LV SL9600 processor 513947-001
With LV SL9400 processor 492552-001
With LV SL9300 processor 492551-001
With ULV SU9400 processor 513946-001
With ULV SU9300 processor 492553-001
Before removing the system board, 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 46).
5. Remove the following components:
a. Primary hard drive (see Primary hard drive on page 55)
b. WLAN module (see WLAN module on page 52)
c. Optical drive (see Optical drive on page 60) or Secondary hard drive (see Secondary hard
drive on page 67)
d. Switch cover and keyboard (see Switch cover and keyboard on page 62)
e. Display assembly (see Display assembly on page 73)
f. Top cover (see Top cover on page 79)
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 Expansion memory module on page 50)
● Primary hard drive (see Primary hard drive on page 55)
● Fan (see Fan on page 92)
● Heat sink (see Heat sink on page 94)
● WLAN module (see WLAN module on page 52)
● WWAN module (see WWAN module on page 58)
86 Chapter 4 Removal and replacement procedures