Rear View Leds - IBM System x3755 M3 7164 Installation And User Manual

Rear view LEDs

The following illustration shows the LEDs on the rear of the server. For more
information about solving power-supply problems, see the Problem Determination
and Service Guide.
Locator
LED
AC power LED: Each hot-swap power supply has an ac power LED and a dc
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, both
the ac and dc power LEDs are lit. For any other combination of LEDs, see the
Problem Determination and Service Guide.
DC power LED: Each hot-swap power supply has a dc power LED and an ac
power LED. When the dc power LED is lit, it indicates that the power supply is
supplying sufficient dc power to the system. During typical operation, both the ac
and dc power LEDs are lit. For any other combination of LEDs, see the Problem
Determination and Service Guide.
Power-supply error LED: When the power-supply error LED is lit, it indicates that
the power supply has failed. See the Problem Determination and Service Guide for
detailed information about power-supply errors.
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.
For the system-management port, this LED is on to indicate that there is an active
link connection on the 100BASE-T. When this LED is off, this indicates an active
link connection on the 10BASE-TX interface.
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.
System-error LED: When this LED is lit, it indicates that a system error has
occurred. An LED on the light path diagnostics panel is also lit to help isolate the
error. This LED is functionally equivalent to the system-error LED on the front of the
server.
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IBM System x3755 M3 Type 7164: Installation and User's Guide
AC power
LED green
AC
DC power
LED green
DC
Power-supply
!
error LED
(
amber
AC
DC
!
System-error Ethernet activity
LED LED
( )
( )
)
Ethernet link Ethernet link
LED LED
Ethernet activity
LED