Sensor board
Table 5-7 Sensor board spare part information
Description Spare part number
RTC battery (includes cable and double-sided adhesive) L90433-001
Before removing the sensor board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is o 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 rst unplugging the power cord from the AC outlet, and then
unplugging the AC adapter from the computer.
4. Remove the keyboard/top cover (see Keyboard/top cover on page 20).
5. Disconnect the battery cable from the system board (see Battery on page 26).
6. Remove the speakers (see Speakers on page 32).
Remove the sensor board:
1. Release the ZIF connector (1) to which the sensor board cable is connected, and then disconnect the sensor
board cable from the sensor board.
2. Remove the sensor board (2) and cable.
Reverse this procedure to install the sensor board.
Component replacement procedures 33