Table 4. QPI link LEDs (continued)
Link LEDs Number of Nodes QPI wrap card or cable status
Blinking 1 to 4 Server(s) operating at reduced
capacity
Locator LED: Use this LED to visually locate the server among other servers. You
can use IBM Systems Director to light this LED remotely.
In a two-node configuration, this LED is lit on the primary server and flashes on
the secondary server during POST.
You can press the locator button on the operator information panel on the front of
the server or use an IPMI command to turn this LED on or off.
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. (See “Light path diagnostics panel” on page 15 for information about the
location and using the light path diagnostics panel.)
Power-on LED: See “Operator information panel” on page 14 for the various states
of the power-on LED.
The following table describes the problems that are indicated by various
combinations of the power-supply LEDs and the power-on LED on the operator
information panel and suggested actions to correct the detected problems.
Table 5. Power-supply LEDs
Power-supply LEDs
Description Action NotesAC DC Error
Off Off Off No ac power to
either power
supply or a
problem with the
ac power source
1. Check the ac power to the server.
2. Make sure that the power cord is
connected to a functioning power
source and is securely connected to
the server.
3. Turn the server off and then turn the
server back on.
4. Replace the power cord.
5. Check the power supply settings.
6. If the problem remains, replace the
power supply.
This is a normal
condition when no
ac power is present.
Off Off On No ac power to
the server or a
problem with the
ac power source
and the power
supply had
detected an
internal problem
1. Replace the power supply.
2. Make sure that the power cord is
connected to a functioning power
source.
This happens only
when a second
power supply is
providing power to
the server.
Chapter 2. Introduction 19
To Next Page
Loading...
Need help?
General