Dell Latitude 7220EX Rugged Extreme Tablet Service Manual - Page 3

Contents 1 Working on your tablet...5 Safety instructions...5 Before working inside the tablet...5 Safety precautions...6 Electrostatic discharge-ESD protection...6 ESD field service kit ...7 After working inside the tablet...7 2 Major components of the tablet...9 3 System setup...11 Boot menu...11 Navigation keys...11 Boot Sequence...12 System setup options...12 General options...12 System information...13 Video...15 Security...15 Secure boot...16 Intel Software Guard Extensions...17 Performance...17 Power management...18 POST behavior...19 Manageability...20 Virtualization support...20 Wireless...21 Maintenance screen...21 System logs...21 SupportAssist System Resolution...22 About...22 Updating the BIOS in Windows ...22 Updating BIOS on systems with BitLocker enabled 23 Updating your system BIOS using a USB flash drive 23 Updating the Dell BIOS in Linux and Ubuntu environments 24 Flashing the BIOS from the F12 One-Time boot menu 24 System and setup password...26 Assigning a system setup password...27 Deleting or changing an existing system setup password 27 4 Troubleshooting...28 Enhanced Pre-Boot System Assessment (ePSA) diagnostics 28 Running the ePSA diagnostics...28 System diagnostic lights...28 Contents 3