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Reverse this procedure to install the RTC battery.
Display lid switch board
Description Spare part number
Display lid switch board (includes cable) 684340-001
Before removing the display lid switch board, follow these steps:
1. Turn off 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 the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the battery (see
Battery on page 67), and then remove the following components:
a. Service cover (see
Service cover on page 69)
b. Smart Card reader (see
Smart Card reader on page 70)
c. Optical drive (see
Optical drive on page 71)
d. Hard drive (see
Hard drive on page 75)
e. Modem module (see
Modem module on page 84)
f. Keyboard (see
Keyboard on page 86)
g. Base enclosure (see
Base enclosure on page 91)
Remove the display lid switch board:
1. Position the computer with the front toward you.
2. Disconnect the display lid switch board cable (1) from the LIF connector on the system board.
Component replacement procedures 105