Toshiba Magnia Z300 - Manual (Page 113)

Installing and Removing Hardware
CPU module
91
9 Remove the CPU module.
Removing the CPU module
10 Install a new CPU module following the same procedure as for
extension modules.
NOTE: Do not push the fin section of heat sink of the CPU
module. This may cause deformation of the heat sink.
Push the CPU module until both ends of it become horizontal
on the left and right sides, and confirm that it was inserted
completely.
11 Install the fan duct and fix it with two screws.
Installing the fan duct