Specifications

Reverse the preceding procedure to install the system board.
RTC battery
Description Spare part number
RTC battery 651038-001
Before removing the RTC battery, 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:
a. Hard drive (see
Hard drive on page 60)
b. Optical drive (see
Optical drive on page 56)
c. Keyboard (see
Keyboard on page 65)
d. Modem module (see
Modem module on page 70)
e. Fan (see
Fan on page 74)
f. Heat sink (see
Heat sink on page 75)
g. Base enclosure (see
Base enclosure on page 79)
h. Display assembly (see
Display assembly on page 84)
i. System board (see
System board on page 91)
Remove the RTC battery:
1. Position the system board right-side up, with the front toward you.
94 Chapter 4 Removal and replacement procedures