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Description Spare part number
Equipped with an Intel Core i3-370M 2.40-GHz processor (3.0-MB L3 cache, dual core, 35 W), the
HM55 chipset, and a graphics subsystem with 1024-MB of discrete video memory
654117-001
Equipped with an Intel Core i3-370M 2.40-GHz processor (3.0-MB L3 cache, dual core, 35 W), the
HM55 chipset, and a graphics subsystem with UMA video memory
654118-001
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 47), and then remove the following components:
●
Optical drive (see
Optical drive on page 49)
●
Hard drive (see
Hard drive on page 51)
●
RTC battery (see
RTC battery on page 53)
●
WLAN module (see
WLAN module on page 55)
●
Keyboard (see
Keyboard on page 57)
●
Top cover (see
Top cover on page 61)
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 54)
●
Fan and heat sink (see
Fan and heat sink on page 83)
●
Processor (see
Processor on page 90)
Remove the system board:
1. Disconnect the following cables from the system board:
●
LED board cable (1)
●
Speaker cable (2)
●
Optical drive cable (3)
●
Display panel cable (4)
78 Chapter 4 Removal and replacement procedures