IBM xSeries 440 8687, Option Installation Manual

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xSeries 440:Option Installation Guide
Replacing and troubleshooting fans
Your xSeries 440 server has four hot-swap fan assemblies, two 150 mm x 38 mm, and
two 150 mm x 51 mm fans. The two 150 mm x 38 mm fans (fan 3 and fan 4) are
located just behind the PCI-X planar and are used to cool the power supplies, PCI-X
slots, and the I/O board. 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 SMP Expansion Modules. Refer
to the following illustration.
Note: The illustrations in this document might differ slightly from your hardware.
Each fan has a light located on the top left side. When the fan is operating correctly,
this light is on. If a fan stops working, the Light Path Diagnostics feature will light a sys-
tem-error light 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 fans 1 and 2
As shown in the following illustration, fans 1 and 2 are located on the right side of the
server, and cool the SMP Expansion Modules. These fans are redundant, meaning
that if one fails, the remaining fan will temporarily speed up to properly cool the SMP
Expansion Modules. In the event of a failure, replace the malfunctioning fan within 48
hours.
Complete the following steps to replace fans 1 and 2:
1. Review the information in “Working inside a server with power on” on page 9 and
“Before you begin” on page 9.
Attention: All fans must be replaced within 48 hours of failing.
Fan 1
Fan 2
Fan 3
Fan 4
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