Chapter 9: Troubleshooting
AT-SBxPWRSYS1 and AT-SBxPWRPOE1 AC Power Supplies
A power supply is operating normally when its AC and DC LEDs are solid green and the Fault LED is off. Possible fault conditions and their solutions are described here:
Fault Condition 1: If the AC LED is off, the power supply is not receiving power, has overheated and been disabled, or has failed and needs to be replaced. Try the following:
Verify that there is a power cord connected to the power supply’s connector on the back panel of the chassis. For example, if a power supply in slot C does not have power, check for a power cord on connector C on the back panel.
Verify that the power cord is securely connected to the chassis and the AC power source.
Verify that the AC power has power by connecting another device to it.
Verify that the power from the AC power source is within the required levels for your region.
If the chassis is still operating, use the SHOW PSU or SHOW PSU ALL command from a local or remote management session to determine if the power supply has overheated and shutdown.
Fault Condition 2: If the AC LED is solid green and the DC LED is off, the power unit is generating insufficient DC power. Replace the power supply.
Fault Condition 3: If the Fault LED is solid amber, try the solutions in Fault
Condition 1. If they do not resolve the problem, replace the power supply.
Note
The power supplies are hot swappable in a redundant configuration. This allows the
Fault Condition 4: If the LEDs on the power supply indicate normal operations but the PSU LED on the active master controller card is showing a fault condition, the problem may be with one of the two power supply interfaces
Caution
The power supply interfaces are not hot swappable and should only be serviced by an authorized service technician.
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