For FH heads – is the laser control cable properly attached?
i. 48 Series, v series, f series the cable should be connected from the marking head to the rear of the laser. ii. 57, 60, and t Series the cable should be connected from the marking head to the RF supply. c. For Fenix and DGM markers check to make sure the RMT INT and RMT KEY circuits are closed. This may mean that you must jumper your external RMT circuits closed.