To restrict the use of printer functions to the Start/Stop, FormFeed, Tear Off, and Load/Unload buttons, lock the control panel. When the panel is locked, the light comes on.
To lock the control panel:
Press and hold Start/Stop for five seconds.
Press and hold Load/Unload and Tractor, and then press Start/Stop.
To unlock the control panel:
Press and hold Start/Stop for five seconds.
Press and hold Load/Unload and Tractor, and then press Start/Stop.