Lenovo CN4093 User Manual page 31

Switch Status LEDs
© Copyright 2015 Lenovo
When POST errors are written to the system log, these errors are also written to the
Lenovo Flex System management-module event log. If a hardware error, such as a
current fault occurs, the CMM displays it. If a firmware error occurs, the CMM
displays the Module did not complete POST message and a post error code that
indicates the test that was running when the error was detected.
Note: You can also use the CMM to make sure that the switch is operating
correctly. For more information, see the CMM documentation.
The following table provides descriptions of the switch status LEDs on the front
panel of the switch.
Table 3. System status LEDs behavior
LED State
- Power Steady green
Off
- Locator Steady blue
Off
- Error Steady yellow
Off
Functional Meaning
When lit, this LED indicates that the switch is on.
When this LED is off and the yellow Error LED is lit,
it indicates a critical alert.
If both the Power and Error LEDs are off, it indi-
cates that the switch is off.
When prompted by a user action in the CMM, this
LED is lit to help identify the location of the switch.
The switch has not received a user-prompted
locator command from the CMM.
When lit, this LED indicates a POST failure or
critical alert. As a result, the system-error LED on
the Lenovo Flex System chassis is also lit.
When this LED is off and the green Power LED is
lit, it indicates that the switch is working correctly.
If both the Power and Error LEDs are off, it indi-
cates that the switch is off.
Chapter 2: Installing and Removing the CN4093
31