# The fault LED has not started blinking

If you have inserted the USB flash drive into the correct USB port on the node canister and the fault LED does not start blinking, use these instructions to determine any necessary actions.

## About this task

After the USB flash drive is inserted into either of the two USB ports the fault LED () should start blinking. While it blinks, the system initializes. Normally during this process the fault LED blinks for approximately three minutes before it stops. The fault LEDs are located on the node canister.

If the fault LED does not start blinking as expected, use the following steps to determine any necessary action:

## Procedure

1. Ensure that the canister is still operating. Look at the system status LED (). If it is permanently off, the node canister has stopped working. Assuming the status LED was in the required blinking state before you inserted the USB flash drive, power off the main power to the system and then restart it again. Restart the initialization of the system. If this condition occurs again, contact your service representative.
2. If the system status LED is not on, completely remove the USB flash drive from the node canister. The canister has not completed powering up and is not ready to receive the USB flash drive. Powering up the canister can take up to 10 minutes. If the status LED does not blink within 10 minutes, proceed to step 3.
3. Remove the USB flash drive from the port and fully insert it in the other USB port on the node canister that you are initializing. Wait for two minutes for the fault LED to start blinking, if it starts blinking, this USB port has worked. Return to the initialization wizard and wait for the LED to stop blinking. If the fault LED does not start blinking, contact your service representative.

   Since this is the only time that you need to use the USB port, you can wait on replacing the canister. When you have finished the initialization and system setup, you can check if the USB port is working. Use Procedure: Getting node canister and system information using a USB flash drive in the Troubleshooting section of the Information Center to get a status file for the port. If a status file is not created for the port, then the port is not working. Contact your service representative for assistance.

Parent topic: The fault LED does not start blinking or stops