User Guide

8 Contents
SAS Backplane. . . . . . . . . . . . . . . . . . . . . 132
Removing the SAS Backplane
. . . . . . . . . . 132
Installing a SAS Backplane
. . . . . . . . . . . . 135
System Board
. . . . . . . . . . . . . . . . . . . . . . 135
Removing the System Board
. . . . . . . . . . . 135
Installing the System Board
. . . . . . . . . . . . 138
4 Troubleshooting Your System . . . . . . . . 141
Safety First—For You and Your System . . . . . . . . 141
Troubleshooting System Startup Failure
. . . . . . . . 141
Troubleshooting External Connections . . . . . . . . 141
Troubleshooting the Video Subsystem
. . . . . . . . . 142
Troubleshooting a USB Device
. . . . . . . . . . . . 142
Troubleshooting a Serial I/O Device
. . . . . . . . . . 143
Troubleshooting a NIC
. . . . . . . . . . . . . . . . . 143
Troubleshooting a Wet System
. . . . . . . . . . . . . 144
Troubleshooting a Damaged System
. . . . . . . . . . 145
Troubleshooting the System Battery
. . . . . . . . . . 146
Troubleshooting Power Supplies
. . . . . . . . . . . 146
Troubleshooting System Cooling Problems
. . . . . . 147
Troubleshooting a Fan
. . . . . . . . . . . . . . . . . 148
Troubleshooting System Memory
. . . . . . . . . . . 148
Troubleshooting an Internal SD Card
. . . . . . . . . 150