Installing the tape backup unit ...................................................................................................166Optical drive (optional)......................................................................................................................167Removing the optical drive......................................................................................................... 167Installing the optical drive...........................................................................................................168SD vFlash media card........................................................................................................................168Replacing an SD vFlash media card............................................................................................168Removing the vFlash media unit................................................................................................ 169Installing the vFlash media unit...................................................................................................170Control panel assembly.....................................................................................................................171Removing the control panel (R730)............................................................................................ 171Installing the control panel (R730)..............................................................................................174Removing the control panel (R730xd)........................................................................................ 175Installing the control panel (R730xd)..........................................................................................176Removing the I/O panel (R730xd)...............................................................................................177Installing the I/O panel (R730xd)................................................................................................ 1785 Troubleshooting your system........................................................................ 180Safety first—for you and your system.............................................................................................. 180Troubleshooting system startup failure........................................................................................... 180Troubleshooting external connections............................................................................................180Troubleshooting the video subsystem.............................................................................................180Troubleshooting a USB device......................................................................................................... 180Troubleshooting iDRAC Direct (USB XML configuration)................................................................ 181Troubleshooting iDRAC Direct (laptop connection)....................................................................... 182Troubleshooting a serial I/O device................................................................................................. 182Troubleshooting a NIC......................................................................................................................182Troubleshooting a wet system......................................................................................................... 183Troubleshooting a damaged system................................................................................................184Troubleshooting the system battery................................................................................................ 184Troubleshooting power supply units............................................................................................... 185Power source problems..............................................................................................................185Power supply unit problems....................................................................................................... 185Troubleshooting cooling problems................................................................................................. 186Troubleshooting cooling fans.......................................................................................................... 186Troubleshooting system memory.................................................................................................... 187Troubleshooting an internal USB key...............................................................................................188Troubleshooting an SD card.............................................................................................................188Troubleshooting an optical drive..................................................................................................... 189Troubleshooting a tape backup unit................................................................................................ 189Troubleshooting a hard drive........................................................................................................... 190Troubleshooting a storage controller...............................................................................................191Troubleshooting expansion cards.................................................................................................... 191