Operator information panel
The following illustration shows the LEDs on the operator information panel on the
front of the server. (The power-control button is also on the operator information
panel. See “Front view” on page 14 for the location of the power-control button.)
v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See the Problem Determination and Service Guide on the IBM Documentation CD to determine which
components are customer replaceable units (CRU) and which components are field replaceable units
(FRU).
v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Lit light path diagnostics LED with the
system-error or information LED also lit Description
System power (green) The states of the power-on LED are as follows:
v Off: AC power is not present, or the power supply or the LED itself
has failed.
v 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 20 to 40 seconds.
Note: Approximately 20 seconds after the server is connected to ac
power, the power-control button becomes active.
v 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.
v Lit: The server is turned on.
v Fading on and off: The server is in a reduced-power state. To
wake the server, press the power-control button or use the IMM
Web interface.
Hard disk drive activity (green) When this LED is flashing rapidly, it indicates that there is activity on a
hard disk drive.
System locator (blue) Use this LED to visually locate the server among other servers. You
can use IBM Systems Director to light this LED remotely.
System information (amber) When this amber LED is lit, it indicates that information about a
suboptimal condition in the server is available in the IMM event log or
in the system-event log.
System error (amber) When this LED is lit, it indicates that a system error has occurred.
28 IBM System x3400 M3 Types 7378 and 7379: Installation and User's Guide
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