Checking inside the system, Safety first—for you and your computer, Opening the system doors – Dell PowerEdge 2550 User Manual

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Checking Inside the System

Dell™ PowerEdge™ 2550 Systems Installation and Troubleshooting Guide

This section provides troubleshooting procedures for components inside the system. Before you start any of the procedures in this section, take the following
steps:

Perform the procedures described in "

Checking Connections and Switches

" and "

The System Setup Program

" in "Checking the Basics."

Read the safety instructions in "

Safety First—For You and Your Computer

You need the following items to perform the procedures in this section:

The system's User's Guide

The Dell OpenManage Server Assistant CD and several blank, formatted 3.5-inch diskettes. (If you cannot run the Dell™ Diagnostics from the utility
partition on your system's hard-disk drive, you can create a set of diagnostics diskettes using the Dell OpenManage Server Assistant CD. See your
system's User's Guide for additional information about using the Dell OpenManage Server Assistant CD.)

The key to the system keylock

Safety First—For You and Your Computer

The procedures in this guide require that you open the computer doors and work inside the computer. While working inside the computer, do not attempt to
service the computer except as explained in this guide and elsewhere in Dell documentation. Always follow the instructions closely.

Turn off and disconnect your computer and peripherals from their power sources (unless you are installing or removing a hard-disk drive). Also,

disconnect any telephone or telecommunication lines from the computer.

Ground yourself by touching an unpainted metal surface on the chassis, such as the metal around the card-slot openings at the back of the

computer, before touching anything inside your computer.

While you work, periodically touch an unpainted metal surface on the computer chassis to dissipate any static electricity that might harm internal

components.

In addition, Dell recommends that you periodically review the safety instructions in the System Information document provided with your computer.

Opening the System Doors

The system has two doors on the top of the system that provide access to the system board and expansion cards. The doors interlock so that the keylock on
the right-side door secures both doors.

To open the system doors, perform the following steps:

Observe the precautions in "

Safety First—For You and Your Computer

" found earlier in this section. Also observe the safety instructions in the System

Information document.

Slide the system out of the rack.

Safety First—For You and Your Computer

Opening the System Doors

Removing the Front Bezel

Removing and Replacing the Expansion-Card Cage

Inside the Chassis

Troubleshooting a Wet System