Chapter 7 Troubleshooting; Diagnosing Led Indicators; System Self-Diagnostic Test Failure - Supermicro SSH-C48Q Installation Manual

Use this chapter for troubleshooting the SSH-C48Q switch.
7-1

Diagnosing LED Indicators

Symptom
PSU1/PSU2 LED is on Red
Mod Attn LED is on Red
Link LED is Off
7-2

System Self-Diagnostic Test Failure

If the Diag LED indicates a failure of the system power-on-self-test (POST), you can use
a console connection to view the POST results. The POST results may indicate a failed
component or help troubleshoot the problem. For more information on connecting to the
console port and using the CLI, refer to the Supermicro Switch CLI Reference Guide.
Note a POST failure normally indicates a serious hardware fault that cannot be rectified
or worked around. If you encounter a POST failure, you should contact your dealer for
assistance.
Chapter 7
Troubleshooting
Table 7-1. Troubleshooting Chart
Action
• Check connections between the PSU, the power cord and the
wall outlet.
• Contact your dealer for assistance.
• Power cycle the PSU to try and clear the condition.
• Replace the PSU (refer to
The system requires some attention, which could indicate one of the
following conditions:
• The switch temperature is at a warning level on the module.
• The switch Silicon temperature is at a warning level
(approximately 90 degrees C).
• DC voltages on the board are slightly out of tolerance (12V Bulk,
5V, 3.3V and 1.8V are all monitored).
• The module can no longer function properly. The system will
take the appropriate actions to ensure that no damage is done
to its components.
• Verify that the switch and attached device are powered on.
• Be sure the cable is plugged into both the switch and
corresponding device.
• Verify that the proper cable type is used and its length does not
exceed specified limits.
• Check the attached device and cable connections for possible
defects. Replace the defective cable if necessary.
Section
7-1
3-4).