Operator information panelThe operator information panel on the front of the server contains status lights.100MB LINKOKTXRXOK 1 21 System Power Light: When this green light is on, system power is presentin the server. When this light flashes, the server is in standby mode (thesystem power supply is turned off and ac current is present). When this lightis off, either a power supply, ac power, or a light has failed.Attention: If this light is off, it does not mean there is no electrical currentpresent in the server. The light might be burned out. To remove all electricalcurrent from the server, you must unplug the server power cords from theelectrical outlets.2 System POST Complete Light: This green light is on when the power-onself-test (POST) completes without any errors.3 SCSI Hard Disk Drive Activity Light: This green light is on when there isactivity on a hard disk drive.4 Processor 1 Activity Light: This green light is on when there ismicroprocessor 1 activity.5 Processor 2 Activity Light: This green light is on when there ismicroprocessor 2 activity.6 Information Light: This amber light is on when the information log containsinformation about certain conditions in your server that might affectperformance. For example, the light will be on if your server does not haveredundant power. A light on the diagnostic LED panel will also be on. (Formore information, see “Identifying problems using status LEDs” on page 151.)7 System Error Light: This amber light is on when a system error occurs. Alight on the diagnostic LED panel will also be on to further isolate the error.(For more information, see “Identifying problems using status LEDs” onpage 151.)8 Ethernet Transmit/Receive Activity Light: When this green light is on,there is transmit or receive activity to or from the server.9 Ethernet Link Status Light: When this green light is on, there is an activeconnection on the Ethernet port.1 Ethernet Speed 100 Mbps Light: When this green light is on, the Ethernetspeed is 100 Mbps. When the light is off, the Ethernet speed is 10 Mbps.10 IBM xSeries User's Reference