Light sensor board
Description Spare part number
Light sensor board (includes cable) 765936-001
Before removing the light sensor 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. Disconnect the tablet from the keyboard dock (see
Releasing the tablet from the keyboard dock
on page 25).
5. Remove the tablet cover (see
Tablet cover on page 43).
6. Disconnect the battery cable (see
Battery cable on page 45).
Remove the light sensor board:
1. Disconnect the light sensor board cable (1) from the system board.
2. Remove the Phillips PM2.0×3.0 screw (2) that secures the board to the tablet.
3. Lift the board upward (3), rotate it outward (4), and then remove it from the tabs and post (5) that help
to secure it.
4. Remove the light sensor board (6) from the tablet.
Reverse this procedure to install the light sensor board.
54 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts