System board
Description Spare part number
System board (includes processor and replacement thermal material)
●
Includes Intel Atom N280 1.66-GHz processor, 512-KB Level 2 cache, 533-MHz front-side bus
(FSB)
577921-001
●
Includes Intel Atom N270 1.6-GHz processor, 512-KB Level 2 cache, 533-MHz front-side bus
(FSB)
585464-001
Before removing the system board, follow these steps:
1. Shut down the device. If you are unsure whether the device is off or in Hibernation, turn the device
on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the device.
3. Disconnect the power from the device by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the device.
4. Remove the battery (see
Battery on page 32).
5. If your device has WWAN capability, remove the SIM (see
SIM on page 33).
6. Remove the following components:
a. Keyboard (see
Keyboard on page 36)
b. Hard drive (see
Hard drive on page 39)
c. Top cover (see
Top cover on page 44)
d. Display assembly (see
Display assembly on page 52)
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:
●
WLAN module (see
WLAN module on page 41)
●
WWAN module, if included (see
WWAN module on page 48)
●
Bluetooth module (see
Bluetooth module on page 50)
Component replacement procedures 59
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