Maintenance and Service Guide

Fan
Description Spare part number
Fan, for discrete systems L23189-001
Fan insert, plastic placeholder for UMA fanless systems L31017-001
Before removing the fan, 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 rubber feet (see Computer feet on page 31).
5. Remove the bottom cover (see Bottom cover on page 33).
6. Remove the battery (see Battery on page 35).
To remove the fan:
1. Disconnect the fan cable from the system board (1).
2. Remove the two Phillips M2.5×5.0 screws (2) that secure the fan to the computer.
3. Lift the fan out of the computer (3).
Reverse this procedure to install the fan.
48 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts