Fan Operation Verification
To verify that the fan unit and the power supply fan are functioning correctly you need to visually inspect the fan unit(s) on the rear of the concentrator to make sure they are turning and that nothing is blocking their path.
Power Supply Operation Verification
Verify that the LEDs on the Controller Module appear as defined in Table
Table 2-3. Controller Module LEDs After Proper Power-Up
LED | Proper State | |
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Primary Power | On. | |
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Backup Power | On. A backup power supply is installed. | |
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| Off. No backup power supply is installed. |
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| |
Temperature (TEMP) | Off. | |
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Installation and Troubleshooting 2 - 21
