There are several possible reasons why the unit may not be processing transactions. Use the following steps to troubleshoot failures.
1. Perform a test transaction using one or more different cards to ensure the problem is not a defective card.
2. Ensure that the card is being inserted/swiped/tapped the correct way. Refer to the
3. Transaction articles for more information.
4. Check for communication/connection errors.
If the problem persists, contact your Helpdesk.