Installing A Psu Module; Replacing A System Fan Module; Removing A System Fan Module - Seagate Exos E 4U106 Hardware Installation And Maintenance Manual

Installing a PSU module

Refer to Figure 60 (page 76)
arrows. You will insert the module into the slot rather than remove it.
IMPORTANT: Handle the PSU carefully, and avoid damaging the connector pins. Do not install the PSU if any
pins appear to be bent.
1. Check for damage, especially to all module connectors.
2. With the PSU handle in the open position, slide the module into the enclosure, taking care to support the base
and weight of the module with both hands.
3. Lever the module home by manually closing the PSU handle. You should hear a click as the latch handle
engages and secures the PSU to its connector on the back of the power midplane.
4. Connect the power cable to the power source and the PSU.
Power cables are typically routed to the PSU from the cable management arm (CMA). Verify that the 180º
power cable bends lie flat in the CMA baskets. Route the cables as shown in
(page 59), ensuring they lay flat on the CMA shelf and through the PSU cable clips assembly. See also
(page 19).
5. Verify that the bitonal PSU Status LED is on/green. Verify that cooling fans are spinning with no fail states.
Verify that the front panel LED states show no amber module faults.
6. If replacing two PSUs, repeat

Replacing a system fan module

This section provides procedures for replacing a failed system fan module. Within this FRU module, if one of the
two internal rotors fails, then a fault occurs, indicating module failure. Illustrations in system fan replacement
procedures show rear panel views of the enclosure, with the fan properly oriented for insertion into the rear panel of
the enclosure.
If a system fan module fails, the remaining three fans are sufficient to maintain operation of the enclosure. You
need not halt operations and completely power-off the enclosure when replacing only one system fan; however, a
complete orderly shutdown is required if replacing multiple system fan modules simultaneously.
CAUTION: Do not remove the cover from the system 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 on
TIP: The illustrations show system fan module replacement as you face the enclosure rear panel. See also
Figure 4 (page 19)

Removing a system fan module

CAUTION: Removing a system fan module significantly disrupts the enclosure's airflow. Do not remove the fan
until you have received the replacement module. It is important that all fan module slots are filled when the
enclosure is in operation.
1. Press down on the latch tab to release the fan from its locked position. See detail No.1 in
and Figure 61 (page 76)
step 1 through
and Figure 8 (page 21).
when performing this procedure, but ignore the directional
step 5, being mindful of the illustrations TIP on
"Routing cables using the CMA"
page 74.
page 73.
Figure 62 (page
Replacing a system fan module
Figure 4
78).
77