D20 Blowers - IBM pSeries 7311 D10 Service Manual

D20 Blowers

Before performing the following procedure, read "Safety Considerations" on page 41.
Each cooling blower assembly has a green LED and an amber LED. The green LED indicates when the
cooling blower is receiving power. A blinking amber LED indicates when the cooling blower needs attention
from a potential cooling problem. When you are standing in front of and facing the I/O subsystem, the
cooling blowers are labeled from left to right, 1 through 4, across the top blower retaining bracket.
Attention: If the I/O subsystem does not have two functional power supplies installed, do not remove a
blower with the power turned on. If only one power supply is functional, removing of a blower will cause
the system to turn power off.
Hot-Swap Blower Removal
To remove a hot-swap blower, do the following:
1. Put the Model D20 subsystem into the service position as described in "D20 Service Position" on page
113.
2. Locate the cooling blower assemblies, as shown in the following illustration.
3. Pull out the snap button located on the front flange of the failing blower.
4. Using the snap button as a handle, pull the front of the blower up, allowing the back edge to pivot on a
recessed ledge located just below the back edge of the blower.
Note: Using the snap button, lift the blower from the chassis. The blower connector will disconnect
from its docking connector, which is located on the underside of the blower.
5. Pull the blower away from the system. Ensure that the two back tabs, located on the bottom back edge
of the blower assembly, have cleared their retaining slots.
Chapter 3. Removal and Replacement Procedures
119