There are two buttons on the front of the printer - the bottom one is the power on/off and the top one is the feed button.
How to reset the TP85 printer:
Turn off the power.
Hold down the feed button whilst powering back on.
This will reset the printer and print a test docket.
.
How to change the paper roll for a TP85 Thermal Printer:
Open the printer cover by pressing the large grey button top left.
Remove any part rolls.
Insert the new thermal paper roll (80mm x 80mm) with the paper coming off the top of the roll. See below:
TP85 Printer Warning Indicator and Beeper:
You will be alerted to any printer errors via the LED screen on the printer (above the paper exit) or an audible beeper. See the table below: