Dell PowerEdge M420 Dell PowerEdge M620 Systems Owner's Manual - Page 5

Installing A Hard Drive In A Hard-Drive Carrier 51 Hard Drive Backplane...52 Removing The Hard-Drive Backplane...52 Installing The Hard-Drive Backplane...53 System Board...53 Removing The System Board...53 Installing The System Board...54 NVRAM Backup Battery...55 Replacing The NVRAM Backup Battery...55 Storage Controller Card...56 Removing The Storage Controller Card...56 Installing The Storage Controller Card...57 4 Troubleshooting Your System 59 Safety First-For You and Your System...59 Troubleshooting System Memory...59 Troubleshooting Hard Drives...60 Troubleshooting USB Devices...60 Troubleshooting An Internal SD Card...60 Troubleshooting Processors...61 Troubleshooting The Blade System Board...61 Troubleshooting The NVRAM Backup Battery...62 5 Using System Diagnostics...63 Dell Online Diagnostics...63 Dell Embedded System Diagnostics...63 When To Use The Embedded System Diagnostics 63 Running The Embedded System Diagnostics 63 Running Embedded System Diagnostics From An External Media 64 System Diagnostic Controls...64 6 Jumpers And Connectors...65 System Board Jumper Settings...65 System Board Connectors...66 Disabling A Forgotten Password...67 7 Technical Specifications...69 8 System Messages...73 LCD Status Messages...73 Viewing LCD Messages...73 Removing LCD Messages...73