Required Tools; Precautionary Measures - Dell PowerEdge 8450 Systems Guia Del Usuario

1-2 Microprocessor Board Upgrade Guide
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To update the system BIOS from the flash BIOS diskette, boot the system from the
diskette and follow the on-screen instructions.

Required Tools

The upgrade procedure requires the use of the following tools:
•
1/4-inch nut driver, preferably with magnetic insert
•
Wrist grounding strap for electrostatic discharge (ESD) protection
•
Antistatic mat
•
Key to the system keylock
•
#2 Phillips screwdriver

Precautionary Measures

Before you remove the computer covers, perform the following steps in the sequence
indicated.
CAUTION: Do not attempt to service the computer system yourself, except
as explained in this guide and elsewhere in Dell documentation. Always
follow installation and service instructions closely.
CAUTION: To help avoid possible damage to the system board, wait
5 seconds after turning off the system before removing a component from
the system board or disconnecting a peripheral device from the computer.
1. Touch 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.
2. Turn off your computer and any peripherals.
3. Disconnect your computer and peripherals from their power sources. Also, dis-
connect any telephone or telecommunication lines from the computer. Doing so
reduces the potential for personal injury or shock.
In addition, take note of these safety guidelines when appropriate:
•
When you disconnect a cable, pull on its connector or on its strain-relief loop, not
on the cable itself. Some cables have a connector with locking tabs; if you are dis-
connecting this type of cable, press in on the locking tabs before disconnecting
the cable. As you pull connectors apart, keep them evenly aligned to avoid bend-
ing any connector pins. Also, before you connect a cable, make sure both
connectors are correctly oriented and aligned.