Operator information panel
The following illustrations show the controls and LEDs on the advanced operator
information panel and the operator information panel depending on your server
model.
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 Ethernet activity LEDs: When any of these LEDs is lit, they indicate that the
server is transmitting to or receiving signals from the Ethernet LAN that is
connected to the Ethernet port that corresponds to that LED.
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 146 for more information about event logs.
Figure 7. Advanced operator information panel
Figure 8. Operator information panel
Chapter 1. The IBM System x3550 M4 server 17
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