84 | Removing the Middle CoverRemoving the Middle CoverWARNING: Before working inside your computer, read the safety informationthat shipped with your computer and follow the steps in "Before You Begin" onpage 11. After working inside your computer, follow the instructions in "AfterWorking Inside Your Computer" on page 13. For additional safety best practicesinformation, see the Regulatory Compliance Homepage atdell.com/regulatory_compliance.WARNING: The middle cover is heavy when the components are attached to it.It is recommended that two people remove and replace the middle cover whilethe components are attached to it.Prerequisites1 Remove the back cover. See "Removing the Back Cover" on page 17.2 Remove the trim cover. See "Removing the Trim Cover" on page 19.3 Remove the stand. See "Removing the Stand" on page 21.4 Follow the instructions from step 1 to step 2 in "Removing the Hard Drive" onpage 35.5 Remove the hard-drive cage. See"Removing the Hard-Drive Cage" on page 38.6 Follow the instructions from step 1 to step 2 in "Removing the Optical Drive" onpage 25.7 Remove the I/O panel. See "Removing the I/O Panel" on page 40.8 Remove the system-board shield. See "Removing the System-Board Shield" onpage 31.9 Remove the inner frame. See "Removing the Inner Frame" on page 49.10 Follow the instructions from step 1 to step 5 in "Removing the I/O-Board" onpage 67.11 Remove the processor heat-sink fan. See "Removing the Processor Heat-Sink Fan"on page 51.12 Remove the processor heat-sink. See "Removing the Processor Heat-Sink" onpage 53.13 Remove the power-supply fan. See "Removing the Power-Supply Fan" on page 33.14 Remove the power-supply unit. See "Removing the Power-Supply Unit" on page 58.15 Remove the converter board. See "Removing the Converter Board" on page 23.16 Follow the instructions from step 1 to step 3 in "Removing the System Board" onpage 77.
