IBM 887022X Maintenance Manual - Page 132
Replacing, troubleshooting
UPC - 000435151957
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Replacing and troubleshooting fans Your xSeries 445 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 in front of 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. See the following illustration. Note: The illustrations in this document might differ slightly from your hardware. Fan 4 Latch release Fan 3 Fan NOTE: FOR PROPER FRONT OF BOX AIRFLOW, REPLACE FAN WITHIN 2 MINUTES 2 NOTE: FOR PROPER FRONT OF BOX AIRFLOW, REPLACE FAN WITHIN 2 MINUTES Fan 1 Figure 71. Fans Each fan has an LED located on the top left side. When the fan is operating correctly, this LED is off. If a fan stops working, the Light Path Diagnostics feature will light a system-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. Read the safety information in "Installation guidelines" on page 79 and "Safety information" on page 257. Attention: All fans must be replaced within 48 hours of failing. 2. Pull out on the quick release latches on each side of the server; then, pull the server out of its rack enclosure until it stops. 122 xSeries 445 Type 8870: Hardware Maintenance Manual and Troubleshooting Guide