Psu Replacement - Western Digital Ultrastar Data102 User Manual

User Guide
f. Once the IOM is seated properly in the slot, close the handles until they latch closed.
Step 6 : Push the chassis back into the rack. Verify that the fans have slowed to their regular RPM. This
ensures that the enclosure is back to its proper cooling settings.
Step 7 : Check the fault LEDs on the IOM or on the enclosure's front and rear LED panels to determine if
there is a firmware mismatch between the replacement IOM and the IOM that was not replaced.
a. If the fault LED is illuminated, open a command prompt on the host server and issue the
following command using SG3_utils.
b. Scan the output for the ESCE element status descriptor. If it is critical, then there is a
firmware mismatch.
c. To fix the firmware mismatch perform an upgrade to the current firmware revision by
following the upgrade instructions here:
4.3 PSU Replacement
Table 39: Replacement Procedure Info
Required Tools
None
Step 1 : Place the CMA(s) into service position.
a. Unlatch the CMA(s) from the rail at the elbow connector by pressing the blue release
button.
b. Swing the CMA(s) away from the enclosure.
c. The arm(s) should be extended away from the enclosure as shown in the following
example.
sg_ses <dev> -p 3
Remember to replace the <dev> field with the appropriate value related to the IOM in
slot A.
# of People Required
1
Figure 46: Unlatching a CMA Connector
Firmware Upgrade (page 181)
Time Required
60s
4. Part Replacement

4.3 PSU Replacement

Replacement Window
5 Minutes
68