Dell PowerEdge M820 (for PE VRTX) - Manual (Page 5)

Mode-specific guidelines ..............................................................................................................56
Sample memory configurations ................................................................................................... 57
Removing memory modules .........................................................................................................61
Installing memory modules .......................................................................................................... 62
NVRAM backup battery .......................................................................................................................63
Replacing the NVRAM backup battery ......................................................................................... 63
Storage controller card .......................................................................................................................64
Removing the storage controller card ......................................................................................... 65
Installing the storage controller card ........................................................................................... 66
4 Troubleshooting your system.......................................................................... 67
Safety first—for you and your system .................................................................................................67
Troubleshooting system memory ...................................................................................................... 67
Troubleshooting hard drives .............................................................................................................. 68
Troubleshooting USB devices ............................................................................................................ 68
Troubleshooting An Internal SD Card ................................................................................................69
Troubleshooting processors .............................................................................................................. 69
Troubleshooting the system board .................................................................................................... 70
Troubleshooting the NVRAM backup battery .................................................................................... 70
5 Using system diagnostics.................................................................................. 71
Dell Embedded System Diagnostics ................................................................................................... 71
When to use the Embedded System Diagnostics .........................................................................71
Running the Embedded System Diagnostics ................................................................................71
System diagnostics controls ......................................................................................................... 72
6 Jumpers and connectors.................................................................................. 73
System board jumper settings ............................................................................................................ 73
System board connectors ...................................................................................................................74
Disabling a forgotten password ..........................................................................................................75
7 Technical specifications.................................................................................... 77
8 System messages................................................................................................80
LCD status messages ..........................................................................................................................80
Viewing LCD messages .................................................................................................................80
Removing LCD messages .............................................................................................................80
System error messages .......................................................................................................................80
Warning messages ............................................................................................................................ 153
Diagnostic messages .........................................................................................................................153
Alert messages ...................................................................................................................................153