8Contents
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