HP Z VR Backpack G1 Maintenance And Service Manual page 6

6 Interpreting system validation diagnostic front panel LEDs and audible codes .......................................................................... 27
7 Troubleshooting guide .......................................................................................................................................................................... 29
Resources ................................................................................................................................................................................ 30
General troubleshooting steps ............................................................................................................................................ 30
Helpful Hints ........................................................................................................................................................................... 45
vi
System board ..................................................................................................................................................... 25
Identify the issue ............................................................................................................................................... 30
1. Understand the issue ............................................................................................................... 30
Boot up sequence .................................................................................................... 31
Failure classification ................................................................................................. 31
2. Examine the environment ....................................................................................................... 33
3. Perform a visual inspection of hardware .............................................................................. 34
4. Update BIOS and drivers .......................................................................................................... 34
Manually updating BIOS and drivers ..................................................................... 34
Remotely deploying BIOS and drivers .................................................................. 34
Analyze the issue ............................................................................................................................................... 34
5. Remove or uninstall recently added hardware, software ................................................. 34
6. HP Hardware Diagnostics and Tools ..................................................................................... 35
HP PC Hardware Diagnostics (UEFI) ...................................................................... 35
HP Support Assistant (HPSA) ................................................................................. 37
HP BIOS Configuration Utility (BCU) ....................................................................... 38
HP Image Diagnostic Tool ....................................................................................... 38
HP Thermal Monitor ................................................................................................. 38
Non HP diagnostics tools ........................................................................................ 38
7. Status lights, blinking light codes, troubleshooting lights, and POST error
messages ....................................................................................................................................... 39
Status lights .............................................................................................................. 39
Blinking light codes .................................................................................................. 40
POST error messages .............................................................................................. 40
Resolve the issue ............................................................................................................................................... 41
8. Hard reset .................................................................................................................................. 41
9. Soft reset (Default Settings) ................................................................................................... 42
10. Reseat cables and connections ........................................................................................... 42
11. Test with minimum configuration ....................................................................................... 43
Essential hardware configuration .......................................................................... 43
Safe mode ................................................................................................................. 44
12. Test with verified working configuration (hardware and/or operating system) .......... 44
13. Replace the system board .................................................................................................... 44
Verify solution .................................................................................................................................................... 45