Q-Logic 59021-05 Chassis Over Temperature LED is Illuminated, Input Power LED Is Extinguished

5 – Diagnostics/Troubleshooting	￿
Chassis Diagnostics

5.2.1

Chassis Over Temperature LED is Illuminated

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

Section 6 Removal/Replacement. 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.

5.2.2

Input Power LED Is Extinguished

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 ”Output Power LED Is Extinguished” on page 5-11.

5.2.3

Fan Fail LED is Illuminated

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 Section 6 Removal/Replacement. 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

Section 6 Removal/Replacement. If the condition remains, contact your authorized maintenance provider.

Note: Removing a fan will not illuminate the Fan Fail LED.

5-10 59021-05 A