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System board
NOTE: The system board spare part kit includes a processor, USB board, and heat sink assembly.
Description Spare part number
System board equipped with 1.6-GHz processor 504592-001
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 30).
5. Remove the following components:
a. Keyboard (see
Keyboard on page 33)
b. Hard drive or solid-state drive (see
Mass storage devices on page 35)
c. Top cover (see
Top cover on page 37)
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 40)
●
RTC battery (see
RTC battery on page 42)
●
Bluetooth module (see
Bluetooth module on page 43)
●
Heat sink assembly (see
Heat sink assembly on page 47)
Remove the system board:
1. Disconnect the wireless antenna cables from the terminals on the WLAN module (see
WLAN
module on page 40).
44 Chapter 4 Removal and replacement procedures