Installing And Removing System Components; Safety Instructions - Dell EMC PowerEdge R940xa Installation And Service Manual

Installing and removing system components

CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and
simple repairs as authorized in your product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow
the safety instructions that are shipped with your product.
Topics:
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Safety instructions

• Before working inside your system
• After working inside your system
• Recommended tools
• Front bezel
• Drives
• System cover
• Support bar
• Cooling fans
• Cooling fan assembly
• Optional USB 3.0 module
• Optional optical drive
• Control panel
• Air shroud
• NVDIMM-N battery
• Drive backplane
• System memory
• Processors and heat sinks
• Expansion cards and expansion card risers
• M.2 SSD module
• Optional IDSDM or vFlash module
• Network daughter card
• System battery
• Optional internal USB memory key
• Power supply units
• Power interposer board
• Trusted Platform Module
• System board
Safety instructions
NOTE: Whenever you need to lift the system, get others to assist you. To avoid injury, do not attempt to lift the system
by yourself.
WARNING: Opening or removing the system cover while the system is powered on may expose you to a risk of electric
shock.
CAUTION: Do not operate the system without the cover for a duration exceeding five minutes. Operating the system
without the system cover can result in component damage.
CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and
simple repairs as authorized in your product documentation, or as directed by the online or telephone service and
44 Installing and removing system components
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