Panasonic KX-FP300E Operating Instructions Manual page 28

Setup
4
Lift out the film cartridge and remove the leaflet
from the unit.
5
If the film in the film cartridge is slack, tighten it by
winding the bottom side gears.
6
Install the film cartridge into the unit.
7
Make sure that the blue label on the cartridge
matches the one on the unit.
8
Close the cover securely by pushing down on the
dotted area on each side.
26
Blue label
Incorrect
Film
Bottom side
gears
Installation label
Leaflet
Correct
Tight
Film cartridge
Blue labels
Blue gear