Present (Swipe) Master Card to TR4030/TR4050 to enter the menu of programming mode. Then select [Setup]->[Machine No]. It allows you to set the machine number for 1~4 digits. Set the number you like with the keypad. If you want to erase the number you just entered, press F3 key. After the number is entered, press F4 key to confirm and then press F1 key to exit.
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