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System board
NOTE: The system board spare part kit includes replacement thermal material. Replacement thermal
material is also available in the Thermal Material Kit, spare part number 634366-001.
Description Spare part number
System board equipped with Intel 6 series express chipset, Intel HM65 PCH, Radeon HD 6630M
graphics subsystem with 1024-MB of discrete video memory
654173-001
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 cover and battery (see
Battery on page 36).
5. Remove the hard drive (see
Mass storage device on page 38).
6. Remove the memory module/wireless module compartment cover (see
WLAN module
on page 41).
7. Disconnect the battery charger board ribbon cable from the system board (see
Battery connector
board on page 47).
8. Remove the top cover (see
Top cover on page 49).
9. Disconnect the optical drive cable from the system board (see
Optical drive on page 58).
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 41)
●
RTC battery (see
RTC battery on page 44)
●
Memory module (see
Memory module on page 46)
●
Fan/heat sink assembly (see
Fan/heat sink assembly on page 65)
●
Processor (see
Processor on page 67)
Remove the system board:
1. Release the ZIF connector to which the audio/USB board cable is attached, and then disconnect
the cable (1) from the system board.
62 Chapter 4 Removal and replacement procedures