HP t505 Troubleshooting Manual page 5

4 Diagnostics and Troubleshooting ............................................................................................................... 26
LEDs ................................................................................................................................................... 26
Power-On Sequence .......................................................................................................................... 27
Power-On Diagnostic Tests ................................................................................................................ 27
Beep Codes ........................................................................................................................................ 28
POST Error Messages ....................................................................................................................... 28
Troubleshooting .................................................................................................................................. 29
5 Restoring the Flash Image ........................................................................................................................... 49
System Requirements ........................................................................................................................ 49
Getting Started ................................................................................................................................... 49
Creating an ISO Image ....................................................................................................................... 50
Formatting a USB Flash Drive ............................................................................................................ 50
Unpacking the Image and Tools for Deployment ............................................................................... 51
Deploying with PXE ............................................................................................................................ 51
Appendix A Adding an Image Restore Tool .................................................................................................. 52
Appendix B Configuring a PXE Server .......................................................................................................... 53
Prerequisites ...................................................................................................................................... 53
vi
Basic Troubleshooting ....................................................................................................... 29
Diskless (No-Flash) Unit Troubleshooting ......................................................................... 30
Troubleshooting Flowcharts ............................................................................................... 32
Initial Troubleshooting ....................................................................................... 32
Initial Troubleshooting Part 2 ............................................................................ 33
No Power, Part 1 ............................................................................................... 34
No Power, Part 2 ............................................................................................... 35
No Power, Part 3 ............................................................................................... 36
No Video, Part 1 ................................................................................................ 37
No Video, Part 2 ................................................................................................ 38
No Video, Part 3 ................................................................................................ 39
No Video, Part 4 ................................................................................................ 40
Error Messages ................................................................................................. 41
NO OS Loading ................................................................................................. 42
OS Not Loading from Flash ............................................................................... 43
Non-Functioning Pointing Device or Keyboard ................................................. 44
No Internal Network Connection ....................................................................... 45
No Audio ........................................................................................................... 46
No IP Address ................................................................................................... 47
Booting in Continuous Loop .............................................................................. 48