MUTOH Falcon II Outdoor Maintenance Manual page 23

Step 2 :
Press the [F1] key or [F2] key on the operation panel to change the parameter.
Step 3 :
Press the [POWER] key, and then press the [POWER] key again.
Falcon II Outdoor series printers – Maintenance Manual
23 AP-74065, Rev. 1.0, 21/11/03