166Troubles Causes MeasuresMarking position isdeviated from theexpected setting position.• The setting of the laser headdirection is not consistent with theactual install direction.• System offset values are input onthe system settings screen.Check the setting direction of the laser head,X-axis/ Y-axis offset or rotation offset setting ofthe system settings screen.⿎ Marking qualityTroubles Causes MeasuresMarking is totally faded/Marking is partiallyfaded.Laser emission port is not clean.• Clean contaminants off the laser emissionport by following the procedures described inSetup/Maintenance Guide.• For LP-RF/LP-RV series:If contaminants persist, replace the protectionglass of the laser emission port.Fumes occurring during lasing hinderlaser beam.• Install dust collector.• Check that dust collector works well.Distance to the work piece is notappropriate.Adjust distance between bottom surface of lasermarker head and marking surface of the workpiece.For LP-GS series:The set Z-position does not match theheight of the actual target work piece.(The LP-GSxxx-L type is excluded.)Set the Z-position according to the work pieceheight.Marking surface of work piece isinclined.Make adjustment so that bottom surface of lasermarker head and marking surface of the workpiece are parallel with each other.There are variations in properties of thework pieces.• Thickness varies.• Surface roughness varies (includingthose in gloss).• Material varies (including those inchemical composition).Adjust the marking conditions and work distanceaccording to respective work pieces.Work piece feeder is not stable. Adjust work piece feeder so that work pieceposition becomes stable.Performance of laser oscillatordeteriorates due to aging.• Increase setting value of laser power.• Decrease scan speed.If it is not possible to get the same marking qualityas before even with the max. value of the laserpower setting, laser oscillator must be replaced.Contact our sales office.For LP-RV series:The setting value of the pulse duration isnot appropriate.Adjust the pulse duration according to the materialof the work piece.For plastic work pieces the pulse duration 4ns or8ns is a common setting, and for metal, 16ns or30ns is often selected.ME-LPGS-SM-8
