Q-Logic SB2A-16B Manuel D’Utilisation

5 – Diagnostics/Troubleshooting

Chassis Diagnostics

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The chassis Over Temperature LED illuminates to indicate that the switch logic 
circuitry has exceeded the failure temperature threshold. The default failure 
temperature threshold is 70° C. You can set the failure temperature threshold 
using the Set Setup System command. Refer to the 

 for more information. If the chassis Over Temperature LED illuminates, 

do the following:

1.

Enter the Show Setup System command to display the failure temperature 
threshold. The default is 70° C. Is the failure temperature threshold to low?
„

Yes - Use the Set Setup System command to set the failure 
temperature threshold to the 70° C.

„

No - Continue.

2.

Inspect the chassis fans. Are the intake openings clear? Are all fans 
operating and producing air flow?
„

Yes - Continue.

„

No - Remove any debris from fan intakes and exhausts if necessary. 
Replace any fan that is not operating. Refer to 

. If the condition remains, continue.

3.

Consider the ambient air temperature near the switch. Make necessary 
corrections. If the condition remains, shut down the switch immediately and 
contact your authorized maintenance provider.

The Input Power LED illuminates to indicate that the switch logic circuitry is 
receiving proper voltages. If the Input Power LED is extinguished, inspect the 
Output Power LED. Is the Output Power LED illuminated?

„

Yes - Contact your authorized maintenance provider.

„

No - Refer to 

.