and buttons. See “Light path diagnostics” on page 19, “Light path diagnostics”on page 170, and “Light path diagnostics LEDs” on page 174 for moreinformation about light path diagnostics.v Video connector: Connect a monitor to this connector. The video connectors onthe front and rear of the server can be used simultaneously.Note: The maximum video resolution is 1600 x 1200 at 75 Hz.v USB connectors: Connect a USB device, such as a USB mouse, keyboard, orother device, to any of these connectors.Operator information panelThis information describes the controls and LEDs on the server front operatorpanel.The following illustration shows the controls and LEDs on the operatorinformation panel.Power-onbutton/LED Ethernet portactivity LEDsLocatorbutton/LEDCheck logLEDSystem errorLEDReleasebuttonv Power-on button/LED: Press this button to turn the server on and off manuallyor to wake the server from a reduced-power state. The states of the power-onLED are as follows:Off: Input power is not present, or the power supply or the LED itself hasfailed.Flashing rapidly (3 times per second): The server is turned off and is notready to be turned on. The power-on button is disabled. This lastsapproximately 10 seconds after input power has been applied or restored.Flashing slowly (once per second): The server is turned off and is ready tobe turned on. You can press the power-on button to turn on the server.Lit: The server is turned on.v Ethernet port activity LEDs: When any of these LEDs is flashing or flickering, itindicates that the server is transmitting to or receiving signals from the EthernetLAN that is connected to the Ethernet port that corresponds to that LED.v Locator button/LED: Use this blue LED to visually locate the server amongother servers. This LED is also used as a presence detection button. You can useIBM Systems Director to light this LED remotely. This LED is controlled by theIMM. When you press the locator button, the LED will be lit and it will continueto be lit until you press it again to turn it off. Press the locator button to visuallylocate the server among other servers. It is also used as the physical presence forthe Trusted Platform Module (TPM).v Check log LED: When this amber LED is lit, it indicates that there are errorsthat require further diagnosis. Check the IMM event log for additionalinformation. See “Event logs” on page 181 for more information about eventlogs.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 on18 System x3750 M4 Types 8722 and 8733: Installation and Service Guide
