Dell PowerEdge R940 EMC Installation and Service Manual - Page 65
Installing and removing system components, Safety instructions
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6 Installing and removing system components Topics: • Safety instructions • Before working inside your system • After working inside your system • Recommended tools • Optional front bezel • System cover • Inside the system • Air shroud • Cooling fans • Fan cage • Intrusion switch • Drives • Drive backplane • Cable routing • System memory • Processors and heat sinks • Processor expansion module • PEM power board • Expansion cards and expansion card risers • M.2 SSD module • Network daughter card riser • Network daughter card • Storage controller card • Optional IDSDM or vFlash module • Optional IDSDM or vFlash module • Power supply unit • NVDIMM-N battery • System battery • Optional internal USB memory key • System board • Trusted Platform Module • Control panel 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 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. Installing and removing system components 65
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