IBM xSeries 230 6RY Hardware Maintenance Manual page 19

Power-on light
This green LED lights when system power is present in the server. When
this light flashes, the server is in standby mode (the system power supply
is turned off and AC current is present). If this light is not on, the power
cord is not connected, the power supply has failed, or this LED has failed.
POST complete light
This green LED lights when the server completes the power-on self-test
(POST) without any errors.
SCSI Hard Disk Drive In-use Light:
This green LED lights when there is activity on a hard disk drive.
Information Light:
This amber LED lights when the information log contains information
about certain conditions in your server that might affect performance. For
example, the light will be on if your server does not have redundant
power. An LED on the diagnostic panel on the system board will also be
on.
System Error Light:
This amber LED lights when a system error occurs. An LED on the
diagnostic panel on the system board will also be on to further isolate the
error.
Ethernet speed Light:
This green LED lights when the Ethernet LAN speed is 100 Mbps.
Ethernet Link Status Light:
This green LED lights when there is an active connection on the Ethernet
port.
Ethernet Transmit/Receive Activity Light:
This green LED lights when there is transmit or receive activity to or from
the server.
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General information