Installing A Psu; Replacing An Fcm; Removing An Fcm - Lenovo ThinkSystem DS Series Hardware Installation And Maintenance Manual

8. If replacing both PSUs, repeat
IMPORTANT: The PSU slot must not be empty for more than 2 minutes while the enclosure is powered.

Installing a PSU

1. Ensure that the PSU is switched off.
If replacing both PSUs, the enclosure must be powered off via an orderly shutdown using the management
interfaces.
2. Orient the PSU for insertion into the target slot on the enclosure rear panel, as shown in
3. Slide the PSU into the slot until the latch clicks home.
4. Connect the AC power cord.
5. Move the PSU power switch to the On position.
6. Wait for the Power OK LED on the newly inserted PSU to illuminate green. See also
If the Power OK LED does not illuminate, verify that the PSU is properly inserted and seated in the slot.

If properly seated, the module may be defective. Check the SMC and the event logs for more information.

Using the management interfaces (the SMC or CLI), determine if the health of the new PSU is OK. Verify

that the Power OK LED is green, and that the Ops panel states show no amber module faults.
7. If replacing both PSUs, repeat

Replacing an FCM

Illustrations in the fan cooling module replacement procedures show rear panel views of the enclosure, and FCMs
are properly aligned for insertion into the FCM slots.
See CAUTION bullets regarding electrostatic discharge and anti-static protection on

Removing an FCM

CAUTION: Removing an FCM significantly disrupts the enclosure's airflow. Do not remove the FCM until you
have received the replacement module. It is important that all slots are filled when the enclosure is in operation.
1. Identify the fan cooling (FCM) module to be removed. If the FCM module has failed, the Fan Fault LED will
illuminate amber. See also
2. Refer to Figure 100 (page 141)
a. Push the release latch down and hold it in place (detail No.1).
b. With your other hand, grasp the handle and pull the FCM outward (detail No.2). Supporting the FCM with
both hands, remove it from the enclosure. See also
140 Module removal and replacement
step 5 through step 7.
step 1 through step 7.
Figure 29 (page 35).
when performing this step:
Figure 101 (page 141).
Figure 99 (page 139).
Figure 28 (page 34).
page 116.