This operation is carried out by
electrically modifying the equipment, with the aim of restricting anyone
without physical access to the equipment from modifying it in any way.
Steps:
1. Disconnect the power supply.
2. Press the open door button from the inside (if installed) or temporarily cut the circuit between the "B" and "-" terminals on the reader controller. Connect the power supply
3. The reader goes into "Changing MASTER Card Mode". All the reader's indicators start to flash for 5 seconds. Any card swiped by the reader during this time will be taken to be the new MASTER card.
Notes:
It will be clear that the Master card and all the data has been deleted as the green indicator led will continuously flash until the power supply is disconnected.
Once reconnected, the reader will be deactivated, that is awaiting the setup of a new MASTER card.
The reader will return to normal mode from any programming mode if a card has not been presented within 30 seconds.