Specifications

System board
NOTE: On models with Intel processors, you can remove the processor from the system board. The
processor is included with the system board in AMD models and cannot be removed.
NOTE: The system board spare part kit includes replacement thermal materials (including a thermal
pad).
Description Spare part number
System board for use only in models with an AMD E2-1800 processor 688277-001
System board for use only in models with an AMD E1-1200 processor 688278-001
System board for use only in models with an Intel Core i5 or i3 processor 685107-001
System board for use only in models with an Intel Pentium or Celeron processor 685783-001
Thermal pad (for use with all models) 651046-001
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 32).
5. Remove the following components:
● WLAN module (see
WLAN module on page 41)
● Hard drive (see
Hard drive on page 46)
●
Keyboard (see
Keyboard on page 51)
●
Top cover (see
Top cover on page 55)
●
Speakers (see
Speakers on page 63)
●
USB board (see
USB board on page 65)
● Power connector cable (see
Power connector cable on page 67)
● Display assembly (see
Display assembly on page 69)
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:
●
Memory module (see
Memory module on page 44)
●
RTC battery (see
RTC battery on page 48)
●
Fan/heat sink assembly (see
Fan/heat sink assembly on page 83)
●
Processor (see
Processor on page 87)
78 Chapter 4 Removal and replacement procedures