Operator information panel
The following illustrations show the controls and LEDs on the operator
information panel.
v Power-control button and power-on LED: Press this button to turn the server
on and off manually. The states of the power-on LED are as follows:
Off: Power is not present or the power supply, or the LED itself has failed.
Flashing rapidly (4 times per second): The server is turned off and is not
ready to be turned on. The power-control button is disabled. This will last
approximately 5 to 10 seconds.
Flashing slowly (once per second): The server is turned off and is ready to
be turned on. You can press the power-control button to turn on the server.
Lit: The server is turned on.
v System-locator button/LED: Use this blue LED to visually locate the server
among other servers. A system-locator LED is also on the rear of the server. This
LED is used as a presence detection button as well. You can use IBM Systems
Director or IMM web interface to light this LED remotely. This LED is controlled
by the IMM. The locator button is pressed to visually locate the server among
the others servers.
v Check log LED: When this yellow LED is lit, it indicates that a system error has
occurred. Check the event log for additional information. See “Event logs” on
page 73 for more information about event logs.
v System-error LED: When this yellow LED is lit, it indicates that a system error
has occurred. A system-error LED is also on the rear of the server. An LED on
the operator information panel or on the system board is also lit to help isolate
the error. This LED is controlled by the IMM.
Check log LED
Locator button/
locator LED
Power-control button/
power-on LED
System-error
LED
Figure 13. Operator information panel
20 IBM System x3550 M5 Type 5463: Installation and Service Guide
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