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Activating or deactivating an identify LED by using the management
console
You can activate or deactivate an identify LED for components attached to the system from the Hardware
Management Console (HMC) or from the IBM Systems Director Management Console (SDMC).
The system provides several LEDs that help identify various components in the system, such as
enclosures or field-replaceable units (FRUs). For this reason, the LEDs are called identify LEDs.
You can activate or deactivate the following types of identify LEDs:
v Identify LED for an enclosure. If you want to add an adapter to a specific drawer (enclosure), you
need to know the machine type, model, and serial number (MTMS) of the drawer. To determine
whether you have the correct MTMS for the drawer that needs the new adapter, you can activate the
LED for a drawer and verify that the MTMS corresponds to the drawer that requires the new adapter.
v Identify LED for a FRU associated with a specified enclosure. If you want to hook up a cable to a
specific I/O adapter, you can activate the LED for the adapter, which is a field replaceable unit (FRU),
and then physically check to see where you should connect the cable. This is especially useful when
you have several adapters with open ports.
To activate or deactivate an identify LED for an enclosure or FRU by using the HMC, follow these steps:
1. In the navigation area, open Systems management.
2. Select the server you are working on.
3. Click Operations > LED Status > Identify LED. The Identify LED, Select Enclosure window opens.
4. To activate or deactivate an identify LED for an enclosure, select an enclosure from the table, and click
either Activate LED or Deactivate LED. The associated LED is either turned on or off.
5. To activate or deactivate an identify LED for a FRU, select an enclosure from the table, and then select
Selected > List FRUs.
6. Select one or more FRUs from the table, and click either Activate LED or Deactivate LED. The
associated LED is either turned on or off.
To activate or deactivate an identify LED for an enclosure or FRU by using the SDMC, complete these
steps:
1. On the Welcome page, under the Resources tab, select the server.
2. Click Actions > Service and Support > Hardware > Identify LED.
3. To activate or deactivate an identify LED for an enclosure, select an enclosure from the table, and click
either Activate LED or Deactivate LED. The associated LED is either turned on or off.
4. To activate or deactivate an identify LED for a FRU, select an enclosure from the table, and then click
List FRUs.
5. Select one or more FRUs from the table, and then click either Activate LED or Deactivate LED. The
associated LED is either turned on or off.
Deactivating a system attention LED or logical partition LED by using
the Advanced System Management Interface
You can deactivate a system attention LED or a logical partition LED by using the Advanced System
Management Interface (ASMI).
The system attention indicator provides a visual signal that the system as a whole requires attention or
service. Each system has a single system attention indicator. When an event occurs that either needs your
intervention or that of service and support, the system attention indicator lights continuously. The system
attention indicator is turned on when an entry is made in the service processor error log. The error entry
is transmitted to the system error log and to the operating system error log.
Common procedures for installable features
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