Q-Logic 59021-05 Manuel D’Utilisation

5 – Diagnostics/Troubleshooting

Chassis Diagnostics

5-10

59021-05 A

The chassis Over Temperature LED illuminates to indicate that the switch logic 
circuitry is overheating. If the chassis Over Temperature LED illuminates, do the 
following:

1.

Inspect the chassis fans. Are the intake openings clear? Are both 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.

2.

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 

.

The Fan Fail LED illuminates to indicate a malfunction with one or both of the 
chassis fans. If the Fan Fail LED illuminates, do the following:

1.

Inspect the chassis fan connections. Remove and reinstall the chassis fan. 
Refer to 

. If the condition remains, 

continue.

2.

Are both fans operating and producing equal air flow?

■

Yes - Contact your authorized maintenance provider.

■

No - Replace the weaker chassis fan. Refer to 

. If the condition remains, contact 

your authorized maintenance provider.

Removing a fan will not illuminate the Fan Fail LED.