Troubleshooting Your System; Safety First-For You And Your System; Before You Begin - Dell PowerVault 775N Installation And Troubleshooting Manual

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Troubleshooting Your System

Dell™ PowerVault™ 775N Systems Installation and Troubleshooting Guide
Safety First—For You and Your System

Before You Begin

External Connections
Checking Specific System Problems
Start-Up Routine
System Orientation
Bezel
System Cover
Checking the Equipment
Inside the System
Responding to a Systems Management Alert Message
Troubleshooting a Wet System
Troubleshooting a Damaged System
If your system is not working as expected, begin troubleshooting using the procedures in this section. This section guides you
through some initial checks and procedures that can solve basic system problems and provides troubleshooting procedures for
components inside the system. Before you start any of the procedures in this section, take the following steps:
Read the "Safety Instructions" in your System Information document.
Read "Running System
Get the key to the system keylock and the system back cover.
NOTE: To perform the tasks in this section, you can connect a keyboard, mouse, and monitor to your system, or you
can use the console redirection function on the serial port (COM1). See
See the System Administrator's Guide for information on console redirection.
Safety First—For You and Your System
The procedures in this guide require that you remove the cover and work inside the system. While working inside the system,
do not attempt to service the system except as explained in this guide and elsewhere in your system documentation. Always
follow the instructions closely. Ensure that you review all of the procedures in "Safety Instructions" in your System
Information document.
Working inside the system is safe—if you observe the following precautions.
CAUTION: The power supplies in this system produce high voltages and energy hazards, which can cause
bodily harm. Only trained service technicians are authorized to remove the system cover and access any of
the components inside the system.
CAUTION: See "Protecting Against Electrostatic Discharge" in the safety instructions in your System
Information document.
Before You Begin
Before you perform any of the procedures, ensure that the following components are securely and properly installed:
Diagnostics" for information about running diagnostics.
Troubleshooting the System Battery
Troubleshooting Power Supplies
Troubleshooting System Cooling
Troubleshooting a Microprocessor
Troubleshooting Expansion Cards
Troubleshooting System Memory
Troubleshooting the Diskette Drive
Troubleshooting a CD Drive
Troubleshooting an External SCSI Tape Drive
Troubleshooting Hard Drives
Troubleshooting the Integrated RAID Controller
Troubleshooting a RAID Controller Card
Figure 2-3 for the location of the serial port.