System board
NOTE: The system board spare part kit includes a processor and replacement thermal material.
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 37).
5. Remove the following components:
a. Keyboard (see
Keyboard on page 40)
b. Hard drive or solid-state drive (see
Mass storage devices on page 42)
c. Top cover (see
Top cover on page 45)
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 48)
●
WWAN module, if included (see
WWAN module on page 50)
●
RTC battery (see
RTC battery on page 52)
●
Bluetooth module (see
Bluetooth module on page 53)
●
Heat sink assembly (see
Heat sink assembly on page 57)
Remove the system board:
1. Disconnect the wireless antenna cables from the terminals on the WLAN module (see
WLAN
module on page 48).
2. If the device also includes a WWAN module, disconnect the wireless antenna cables from the
terminals on the WWAN module (see
WWAN module on page 50).
54 Chapter 4 Removal and replacement procedures
