1. Installing Internal Optional DevicesExpress5800/B120f User's Guide36Chapter 2 Preparations1.3 Installation and Removal Procedure (Common section)Take steps below to install or remove top cover and air duct.1.3.1 Removal of top coverTake steps below to remove the top cover.1. After the shutdown processing for the CPU blade to be removed, turn off the power of the CPU blade.2. Take the CPU blade out from the Blade Enclosure.Refer to the User's Guide of the Blade Enclosure.3. Put the CPU blade on an anti-static sheet with little dust.4. Remove the two screws that secure the top cover.5. Firmly hold the top cover, move it slightly toward the rear of the CPU blade, then lift the cover to removeit from the CPU blade.Important Pay attention not to make the cover hit any electronic component on the CPU blade.
