162ERRORCODE Description Measures *1E770The connection between laser marker and yourPC is disconnected.Unable to communicate with Laser Marker NAVIsmart.• Check the Ethernet or USB connection status.• For Bluetooth communication, check for anyobstacles and distance between that and the lasermarker.• Save files onto your PC local folder, and overwriteand save them when the connection gets backonline.E775 Unable to transmit the response data of MSTcommand.• When the marking interval is too short fortransmission time of MST command, MSTcommand is not available. In such case, check themarking completion by I/O.• Check the control procedure of the externalcontrol.E780 Serial number mismatch.• Make sure the connected laser markercomponents have the correct serial numbers.• For LP-GS/RC/RF series, it is recommended toconnect the head and controller that have thesame serial numbers.• For LP-RV series, it is recommended to connectthe head, oscillator unit, and controller that havethe same serial numbers.E781• Model number mismatch.• Incorrect connection of signal cable or unitpower cable.• Make sure the connected laser markercomponents have the correct model numbers.• For LP-GS series, it is recommended to connectthe head and controller that have the same modelnumbers. If you combine the different models, themodel number of the laser head is applied to thelaser marking system.• Check the connection of the cable and varioussignal lines, and then restart the laser marker.*1 : If the error persists after restart of the laser marker, contact our sales office or representatives.*2 : Error that may occur for LP-GS series only.*3 : Error that may occur for LP-RC series only.*4 : Error that may occur for LP-RF series and LP-RV series only.ME-LP-GS-SR-COMP-3
