Panasonic KX-FB423CN Manual page 234

4.5.3. THERMAL HEAD AND ROLLER SHAFT
If smudges or black/white bands appear on a copied or received document, check whether there is dust on the thermal head
and roller shaft, and clean the thermal head and roller shaft to remove the dust.
1 If ejected paper is stacked on the paper sacker, remove it.
2 Disconnect the power cord and the telephone line cord.
3 Press down the printer cover open button (
cover ( ).
4 Remove the ink film and clean the thermal head with a cloth
moistened with isopropyl rubbing alcohol, and let it dry thoroughly.
Replace the ink film.
Caution:
· To prevent a malfunction due to static electricity, do
not use a dry cloth and do not touch the thermal head
directly.
5 Turn the gear of blue core in the direction of the arrow.
· Make sure that the ink film is wrapped around the blue core at
least once.
). Open the printer
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