Fans
Description Spare part number
Fan, the same spare part number can be used to replace either the right fan or the left fan 858970-001
IMPORTANT: Make special note of each screw and screw lock size and location during removal
and replacement.
Before removing the fan, follow these steps:
1. Shut down the computer.
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 base enclosure (see Base enclosure on page 32).
5. Disconnect the battery (see Battery on page 34).
Remove the fans:
1. Disconnect the fan cables (1), and then release the cable from the threading channels (2).
2. Remove the 4 Phillips 2x5 screws (3) from the fans, lift and remove the right fan (4), and then lift and
remove the left fan (5).
Reverse this procedure to install the fans.
48 Chapter 5 Removal and replacement procedures for authorized service provider parts
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