Disk Access Led; Uid Led (Unit Identification); Link/Act Led; Speed Led - NEC N8100-1575F User Manual

Troubleshooting 10-5

DISK ACCESS LED

The DISK ACCESS LED on the front panel goes on while the internal hard disk drive or optical
disk drive is accessed.

UID LED (Unit Identification)

Pressing the UID switch turns the UID LED located on the front and rear of the server on and off.
Pressing the UID switch again turns off the UID LED. The UID LED blinks upon reception of
command from software. If more than one server is installed in a single rack, the LED identifies the
server you are going to maintain. Especially, this LED helps you identify the target server when
working from the rear of the rack.

LINK/ACT LED

The LINK/ACT LED indicates the state of each factory-installed network port. If the power is
supplied to the server and the hub and they are correctly connected with each other, the LED is lit
green (LINK state). If information is transmitted through a network port, the LED blinks green
(ACT state).
If the LED is not lit in the LINK state, check the network cable and the cable connection. If the
LED is not lit still after the checking, the network (LAN) controller may be defected. Contact your
service representative.

SPEED LED

The SPEED LED on the rear panel indicates whether each of the factory-installed network ports is
operated through the 1000BASE-T, 100BASE-TX or 10BASE-T network interface. If the LED is lit
amber, the network port is operated through 1000BASE-T. If the LED is lit green, the network port
is operated through 100BASE-TX. If the LED is off, the network port is operated through 10BASE-
T.