IBM 4957-J11, Hardware Installation And Maintenance Manual

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Procedure
1. Check for damage, especially to all module connectors.
2. Align the system fan module for insertion into its slot, as shown in Figure 30 on page 59
3. Insert the system fan, and slide the module into the enclosure, taking care to support the base and
weight of the module with both hands.
Gently, but firmly, push the fan module into its fully seated position with its mating connector in the
enclosure.
4. Verify that the System Fan Status LED is off. Verify that the cooling fans are spinning with no fail states.
Verify that the front panel LED states show no amber module faults.
5. Repeat this procedure if replacing multiple fans. The replacement procedure should be completed
within an absolute maximum of 2 minutes for this CRU module.
Replacing a controller fan module
Procedures for the removal and installation of controller fan modules.
This section provides procedures for replacing a failed controller fan module. Illustrations in controller
fan replacement procedures show top panel views of the enclosure, with the fan properly oriented for
insertion into the top panel of the enclosure, near the IOMs. Remove the top lid “B”to access the
controller module fan. See Figure 9 on page 11. Reattach top lid “B”when you complete the procedure
If a system fan module fails, the remaining fan is sufficient to maintain operation of the enclosure. You
need not halt operations and completely power-off the enclosure when replacing only one controller
module fan.
CAUTION: Do not remove the cover from the controller fan module due to danger from electric
shock inside. Return the module to your supplier for repair.
See CAUTION bullets regarding electrostatic discharge and anti-static protection in the “ESD
precautions” on page 55 section.
Tip: The illustrations show controller fan module replacement as you face the enclosure front and view
the top panel. See also Figure 11 on page 12 and Figure 9 on page 11.
Removing a controller fan module
About this task
CAUTION: Removing a controller fan module disrupts the enclosure’s airflow. Do not remove the
fan until you have received the replacement module. It is important that all CRU module slots are
filled when the enclosure is in operation.
Procedure
1. Grasp the latch tab on the interior channel wall of the enclosure, and squeeze the tab against the wall
to release the channel fan from its locked position as shown in the figure below.
60 IBM Cloud Object Storage System: Medium/Large J11/J12 Disk Enclosure Hardware Installation and
Maintenance Manual