IBM System x3550 M5 Type 5463 - Page 41

v Ethernet link LEDs: When these LEDs are lit, they indicate that there is an
active link connection on the 10BASE-T, 100BASE-TX, or 1000BASE-TX interface
for the Ethernet port.
v Ethernet activity LEDs: When these LEDs are lit, they indicate that the server is
transmitting to or receiving signals from the Ethernet LAN that is connected to
the Ethernet port.
v Power-on LED: When this LED is lit and not flashing, it indicates that the server
is turned on. The states 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 not
ready to be turned on. The power-control button is disabled. This will last
approximately 5 to 10 seconds.
Flashing slowly (once per second): The server is turned off and is ready to
be turned on. You can press the power-control button to turn on the server.
Lit: The server is turned on.
v System-locator LED: Use this LED to visually locate the server among other
servers. You can use IBM Systems Director or IMM2.1 web interface to light this
LED remotely.
v System-error LED: When this LED is lit, it indicates that a system error has
occurred. An LED on the operator information panel is also lit to help isolate the
error.
v DC power LED: Each hot-swap ac power supply has a dc power LED. When
the dc power LED is lit, it indicates that the power supply is supplying adequate
dc power to the system. During typical operation, both the ac and dc power
LEDs are lit. For any other combination of LEDs, see “AC power-supply LEDs”
on page 70.
v AC power LED: Each hot-swap ac power supply has an ac power LED. When
the ac power LED is lit, it indicates that sufficient power is coming into the
power supply through the power cord. During typical operation, the ac power
LED is lit. For any other combination of LEDs, see “AC power-supply LEDs” on
page 70.
v Power-supply error LED: When the power-supply error LED is lit, it indicates
that the power supply has failed.
Note: Power supply 1 is the default/primary power supply. If power supply 1
fails, you must replace the power supply immediately.
AC LED
(green)
DC LED
(green)
Power-supply
error LED (yellow)
System-locator
LED (blue)
Power LED
(green)
System-error
LED (yellow)
Ethernet
activity LED
Ethernet
link LED
Power
supply 2
Power
supply 1
Figure 20. Rear view LEDs
Chapter 1. The IBM System x3550 M5 server 25