Hold the UP DOWN & RIGHT Buttons down, continue to hold these buttons down while Powering on the machine
Once it boots up into the Maintenance Mode you can release the 3 buttons
Press the RIGHT Button until you see CHECK 14 HEAD REPLACE
NOTE: Head Ranks consist of 3 rows of 8 characters
When entering the characters you will see 1 row at a time
Press ENTER
You will see the 1st row of characters, write them down
Press the RIGHT Arrow Button to get to the 2nd row of characters, write them down
Press the RIGHT Arrow Button to get to the 3rd row of characters, write them down
Press the ENTER Button until the curser is at the last Character of the 3rd Row, press the up or down button and change the value of the last character by one digit or letter
Press ENTER to save this value and then press ENTER to confirm this change
Turn the machine off for at least 30 seconds
Hold the UP DOWN & RIGHT Buttons down, continue to hold these buttons down while Powering on the machine
Once it boots up into the Maintenance Mode you can release the 3 buttons
Press the RIGHT Button until you see CHECK 14 HEAD REPLACE
Navigate back to the 3rd row and change the last digit back to the original value
Press ENTER to save this value and then press ENTER to confirm this change
Turn the machine off
Turn the machine on normally