Reference Guide

support.dell.com Dell PowerEdge Systems — Microprocessor Upgrade Guide 1-11
If you are upgrading a PowerEdge 4300 with a microprocessor with an
operating frequency less than 600 MHz, you do not need to replace the system board
mounting tray.
1. Remove the system board mounting tray as follows.
WARNING: The power supplies in this computer system produce high
voltages and energy hazards, which can cause bodily harm. Only
trained service technicians are authorized to remove the computer
cover and access any of the components inside the computer.
NOTICE: Observe the information given in “Precautionary Measures”
and “Before You Begin” to ensure that the system configuration screens
are recorded and the system is properly shut down and disconnected
from all power sources.
a. Unlock and remove the computer cover.
For instructions, see the Installation and Troubleshooting Guide.
b. To access the system board, release the system-board tray latch at the back
lower corner of the tray (see Figure 1-4) and pull the tray open to the first
stop position (or service position).
NOTE: From the service position, if you depress and release the tray latch and
pull the tray out again, you will come to a second stop position that is used by
manufacturing. To remove the tray completely from any position, depress and
hold the latch, and pull the tray out of the chassis.
c. Record the location of any internal expansion card cables, record the slot
number assignments, and then remove all the expansion cards.
Place the expansion cards in antistatic bags or on a grounded antistatic mat
or other antistatic surface.
d. Record the locations and disconnect all internal cables attached to the sys-
tem board.
e. Press and hold the tray release latch as you slide the system board and
mounting tray assembly completely out of the chassis.
f. Lay the tray assembly with the system board facing up on a flat surface.
g. Remove the mounting screw from the mounting tray.
h. Slide the system board 6.3 mm (0.25 inch) toward the front (left edge of the
mounting tray, as shown in Figure 1-5) and lift the system board away from
the mounting tray.
2. To install the upgrade mounting tray assembly (provided in your upgrade kit) in
your PowerEdge 4300 system, perform the preceding steps in reverse order.
3. Remove the microprocessors.
See “Removing the Microprocessors,” found later in this document.