Operator information panelThe following illustration shows the controls and LEDs on the operator informationpanel.v Power-control button and power-on LED: Press this button to turn the serveron and off manually or to wake the server from a reduced-power state. Thestates 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 notready to be turned on. The power-control button is disabled. This will lastapproximately 20 to 40 seconds.Flashing slowly (once per second): The server is turned off and is ready tobe turned on. You can press the power-control button to turn on the server.Lit: The server is turned on.Fading on and off: The server is in a reduced-power state. To wake theserver, press the power-control button or use the IMM Web interface. See“Logging on to the Web interface” on page 120 for information on logging onto the IMM Web interface.v Ethernet activity LEDs: When any of these LEDs is lit, they indicate that theserver is transmitting to or receiving signals from the Ethernet LAN that isconnected to the Ethernet port that corresponds to that LED.v System-locator button/LED: Use this blue LED to visually locate the serveramong other servers. This LED is also used as a presence detection button. Youcan use IBM Systems Director to light this LED remotely. This LED is controlledby the IMM. When you press the System-locator button, the LED will blink and itwill continue to blink until you press it again to turn it off. The locator button ispressed to visually locate the server among the others servers.v System-information LED: When this amber LED is lit, it indicates that anoncritical event has occurred. Check the error log for additional information. Seethe Problem Determination and Service Guide on the System x DocumentationCD for more information about error logs.v System-error LED: When this amber LED is lit, it indicates that a system errorhas occurred. A system-error LED is also on the rear of the server. An LED onthe light path diagnostics panel on the operator information panel is also lit tohelp isolate the error. This LED is controlled by the IMM.Light path diagnostics panelThe light path diagnostics panel is on the top of the operator information panel. Foradditional information about the LEDs on the light path diagnostics panel, seeTable 2 on page 18.Chapter 1. The System x3550 M3 server 15
