Article ID: 12460
Installed an S-AC-PS non-POE power supply into an S-Series chassis.
The "AC OK" LED lights up, indicating that AC line voltage is sufficient.
The "DC OK" LED does not light, indicating that outgoing power is non-operational.
This condition will occur if the power supply is inserted upside down.
Check to ensure the power supply is properly oriented in its bay.
For more information, please refer to the S-Series Chassis Hardware Installation Guide