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 13 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. Approximately 3 minutes 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.
28 IBM System x3500 M2 Type 7839: Installation and User’s Guide
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