Removal and replacement procedures
Maintenance and Service Guide
4–47
System board
✎
The system board spare part kit includes replacement thermal material.
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 6
).
5. Remove the following components:
a. Hard drive (see
“Hard drive” on page 8
)
b. Memory module (see
“Memory module” on page 10
)
c. WLAN module (see
“WLAN module” on page 11
)
d. WWAN module (see
“WWAN module” on page 15
)
e. SIM slot board (see
“SIM slot board” on page 16
)
f. RTC battery (see
“RTC battery” on page 18
)
g. Optical drive (see
“Optical drive” on page 19
)
h. Keyboard (see
“Keyboard” on page 21
)
i. Switch cover (see
“Switch cover” on page 25
)
j. Speaker assembly (see
“Speaker assembly” on page 27
)
k. Display assembly (see
“Display assembly” on page 28
).
l. Top cover (see
“Top cover” on page 37
).
When replacing the system board, be sure that the following additional components are removed from the defective
system board and installed on the replacement system board:
■
Heat sink (see
“Fan/heat sink assembly” on page 50
)
■
Processor (see
“Processor” on page 55
)
Description
Spare part number
For use only with computer models equipped with graphics subsystems with
discrete memory
530780-001
For use only with computer models equipped with graphics subsystems with
UMA memory
530781-001
