Maintenance and Service Guide

Fan
Table 5-6 Fan spare part information
Description Spare part number
Services the processor L93193-001
Services the graphics subsystem (for use only on computer models equipped with a graphics subsystem
with discrete memory)
L93194-001
Before removing the fans, 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 bottom cover (see Bottom cover on page 25).
5. Disconnect the battery cable from the system board (see Front speakers on page 27).
Remove the fans:
1. Disconnect the fan cables (1) from the system board.
2. Remove the four Phillips M2.0×4.1 screws (2) that secure the fans to the system board.
3. Remove the fans (3).
Reverse this procedure to install the fans.
34 Chapter 5 Removal and replacement procedures