Muratec MFX-2500 Field Engineering Manual page 209

8. Press [Enter] to save the customer's address. The LCD will show:
Enter the customer's phone number. The phone number may be up to 20 characters in length.
9. Press [Enter] to save the customer's phone number and continue. The LCD will show:
Enter the printer's serial number. The number may be up to 18 characters in length.
10. Press [Enter] to save the printer's serial number and continue. The LCD will show:
Enter the scanner's serial number. The number may be up to 18 characters in length.
3-138