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10. Carefully install the processor-board assembly and retention bracket.
11. Install the EMC shield on the rear of the server; then, hand-tighten the blue
12. Carefully install the memory-board assembly.
If you have other options to install or remove, do so now. Otherwise, go to
"Completing the installation" on page 111.
Replacing and troubleshooting fans
Your xSeries 455 server has two hot-swap 150 mm x 51 mm fans and two hot-swap
150 mm x 38 mm fans. The two 150 mm x 51 mm fans (fan 1 and fan 2) are
located toward the front of the server and are used to cool the memory board and
processor board. The two 150 mm x 38 mm fans (fan 3 and fan 4) are located just
behind the PCI-X board and are used to cool the power supplies, PCI-X slots, and
other components.
Each fan has an LED to help you detect a problem. When the fan is operating
correctly, this LED is off. If a fan stops working, the Light Path Diagnostics feature
will light the system-error LED on the front of the server, indicating that there is a
problem, and guide you to the defective fan. When this occurs, first identify the
defective fan; then, using the appropriate procedure, remove and replace the fan.
Replacing fan 1 or 2
Fans 1 and 2 are located on the right side of the server. These fans are redundant,
meaning that if one fails, the remaining fan will temporarily speed up to properly
cool the server components.
Attention:
Complete the following steps to replace fan 1 or 2:
1. Read the safety information beginning on page 215 and "Installation guidelines"
2. Place your fingers into the two finger holes on the top of the fan, and squeeze
3. Turn the new fan so that the LED on the top of the fan is to the right side of the
4. Push the replacement fan assembly into the server until it clicks into place.
g. Tighten the heat-sink screws to secure the microprocessor, using the
T-handled Torx wrench that is provided with the microprocessor option.
h. Slide the power module gently into the microprocessor.
i. Tighten the power-module screws to secure the power module.
j. Connect the power-module cable to the power module and to the adjacent
power-module cable connector.
thumbscrews to secure the EMC shield.
All fans must be replaced within 48 hours of failing.
on page 77.
them together; then, lift the fan out of the server.
server.
Chapter 4. Installing options
107
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Table of Contents
Troubleshooting
