Description Spare part number
●
Windows 8 Standard 747149-501
System board for use only in models with an AMD A4-5000 processor and discrete graphics:
●
Without Windows 8 747151-001
●
Windows 8 Standard 747151-501
System board for use only in models with an AMD E2-3800 processor and discrete graphics:
●
Without Windows 8 748452-001
●
Windows 8 Standard 748452-501
System board for use only in models with an AMD E1-2100 processor and discrete graphics:
●
Without Windows 8 747152-001
●
Windows 8 Standard 747152-501
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 49).
5. Remove the following components:
●
Service door (see
Service door on page 55)
●
Top cover (see
Top cover/keyboard on page 61)
6. Disconnect the display cable from the system board (see
Display assembly on page 70).
NOTE: 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 58)
●
Memory module (see
Memory module on page 60)
●
RTC battery (see
RTC battery on page 102)
●
Fan/heat sink assembly (see
Fan/heat sink assembly on page 88)
●
Processor (Intel only; see
Processor on page 95)
NOTE: AMD processors come soldered to the system board and cannot be removed or replaced.
To remove the system board:
1. Position the computer upside down, and then disconnect the hard drive connector cable (1) from the
system board.
84 Chapter 4 Removal and replacement procedures
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