System board
Description Spare part number
System board (includes 1 GB of discrete graphics subsystem memory and replacement thermal
material)
603771-001
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 37), and then remove the following components:
a. Hard drives (see
Primary hard drive on page 38 and see Secondary hard drive on page 44)
b. memory module compartment cover (see
Memory module on page 42)
c. Keyboard (see
Keyboard on page 50)
d. Top cover (see
Top cover on page 52)
e. Optical drive (see
Optical drive on page 57)
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:
●
RTC battery (see
RTC battery on page 41)
●
Memory modules (see
Memory module on page 42)
●
WLAN module (see
WLAN module on page 48)
●
Fan/heat sink assembly (see
Fan/heat sink assembly on page 64)
●
Processor (see
Processor on page 66)
60 Chapter 4 Removal and replacement procedures ENWW
