First Alert ACTION T-1000 - Manual (Page 23)

Using Continuous-feed Paper
3. When the legs are in the slots, lean the guide all the way back. The
guide should rest above the paper entering the printer, separating it
from paper exiting the printer.
Setting top of form
Now you are ready to set the top of form position. Follow these steps:
1. Turn the paper feed knob to advance the paper until the
perforation between pages is just below the top of the ribbon.
2.
Now replace the front lid.
Your printer should now be set up as shown below.
When you turn on your printer, it remembers this top of form setting
and uses it when any program tells it to move to the top of the next
page. If you later find that your word processing or other application
program prints too high or too low on the page or is printing on the
perforations, check to see that your top of form setting is correct.
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Setting Up