ContentsAbout this Guide.......................................................................................................5Revision History..................................................................................................................................... 5Audience................................................................................................................................................ 5Contacting Dell......................................................................................................................................5Related Publications.............................................................................................................................. 51 About the SC180 Expansion Enclosure.............................................................7SC180 Expansion Enclosure Overview................................................................................................. 7SC180 Expansion Enclosure Monitoring and Diagnostics................................................................... 7SC180 Expansion Enclosure Front-Panel Features and Indicators..................................................... 7SC180 Expansion Enclosure Back-Panel Features and Indicators......................................................9SC180 Expansion Enclosure EMM Features and Indicators.........................................................10SC180 Expansion Enclosure Fan Module Features and Indicators.............................................. 11SC180 Expansion Enclosure PSU Features and Indicators.......................................................... 12SC180 Expansion Enclosure Drives.................................................................................................... 122 Replacing SC180 Components........................................................................ 14Safety Precautions............................................................................................................................... 14Installation Safety Precautions...................................................................................................... 14Electrical Safety Precautions......................................................................................................... 15Electrostatic Discharge Precautions............................................................................................. 15General Safety Precautions........................................................................................................... 15Pre-Replacement Procedures............................................................................................................ 16Sending Diagnostic Data Using Dell SupportAssist...................................................................... 16Contacting Dell Technical Support Services................................................................................ 16Shutting Down the Storage System and Expansion Enclosures..................................................16Replacing PSUs.................................................................................................................................... 17Identifying the Failed PSU..............................................................................................................17Replacing a PSU ............................................................................................................................18Replacing Cooling Fan Modules........................................................................................................ 20Identifying the Failed Cooling Fan Module.................................................................................. 20Replacing a Cooling Fan Module.................................................................................................. 21Replacing Hard Drives.........................................................................................................................23SC180 Expansion Enclosure Drive Numbering............................................................................ 23Identifying the Failed Hard Drive.................................................................................................. 23Replacing a Hard Drive..................................................................................................................24Replacing an Enclosure Management Module.................................................................................. 273