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2. Remove the display switch module (2).
Reverse this procedure to install the display switch module.
Rear USB board
Description Spare part number
Rear USB board (includes rear USB board cable) 449762-001
Before removing the rear USB 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).
5. Remove the following components:
a. Hard drive (see
Hard drive on page 52)
b. Optical drive (see
Optical drive on page 59)
c. Switch cover (see
Switch cover on page 61)
d. Keyboard (see
Keyboard on page 63)
e. Speaker assembly (see
Speaker assembly on page 66)
f. Display assembly (see
Display assembly on page 69)
g. Top cover (see
Top cover on page 75)
90 Chapter 4 Removal and replacement procedures