# Resolving problems with the node canister

If you have been directed to this information, initialization cannot proceed or has failed due to a node canister problem. Several actions must be taken to resolve these issues.

## About this task

Use the LED display ( 1 ) on the rear of the node canister that you are initializing to determine the action that is needed to resolve the problem.
Figure 1. LEDs on the node canisters
If the system status LED () is lit, then the node canister has started. However if the system status LED remains unlit, then there is a problem with the node canister. Use the following steps to determine any necessary actions:

## Procedure

1. Turn off the switch on both power supplies.
2. Partially remove the canister by opening the two securing handles and pulling the canister out 50 mm (2 inches). Ensure that you are opening the correct handle. Handles for the node canisters are located in close proximity to each other. The handle with the finger grip on the right removes the upper canister ( 1 ). The handle with the finger grip on the left removes the lower canister ( 2 ).
   Figure 2. Rear of node canisters that shows the handles.
3. Push the canister back in until it stops moving, then close the two handles ensuring they close fully.
4. Restore power to the system by connecting the power connector to a power source. Use the power switch on each of the two power supply units, located in the back of the enclosure to turn on the system.
5. Check the system status LED () and ensure that it is blinking. If blinking, continue with the initialization wizard. If the status LED is not blinking proceed to next step.
6. Check the system status LED () and ensure that it is blinking. If blinking, continue with the initialization wizard. If the status LED is not blinking, proceed to next step.
7. If after completing these tasks, the node canister does not start or fails to initialize, contact your service representative to replace the node canister. If the other canister in the enclosure is in the correct state, with its system status LED blinking, you can continue the initialization by inserting the USB flash drive into that canister. After the system initializes, you can continue with system setup. Alerts are added to the event log indicating a canister is missing or failed. Do not remove the faulty canister until a replacement is available. Removing the canister before the replacement is added can disrupt the cooling system on the enclosure.