Parkeon Strada - Troubleshooting - M900 Card Reader: "Invalid Card" Error Message during Card Transactions.

The M900 card reader hangs down in the meter from a silver hook on its face, and has a white roller on the front of it. 

Check the cable which runs from the mag head reader on the meter door over to the card reader.

• • Look for signs of damage or fraying.
  • Reseat the cable connections.  
  • Ensure the cable is not hanging loose inside the meter. Any excess cable length should be tucked into the notch on the reader.
    • If this cable is not tucked away tightly enough, all transactions will give "Invalid Card".
  • Test a card transaction and see if the "Invalid Card" error continues. 
    
    
    
    
    
• If still getting "Invalid Card", swap out this mag head reader cable and retest a transaction.
  • If possible, use a mag head cable from a functioning meter to test with. 
    
    
• If still getting "Invalid Card", swap the mag-head reader on the meter door.