- 37 - KFB-TM/KFN-TM-SH-e-141010.5 Problems and SolutionsProblems Possible cause Common SolutionsDisplay is blank.No self testMains power is turnedoff. Power supply faultyor not plugged. Internalbattery is not charged.On/Off switch problemCheck power is getting inside the scaleand on/off switch is working.Verify the voltages, which is on thepower labels.Blank display afterself testPan not installed.Unstable weight, loadcell damagedCheck the pans are installed correctly.Try to turning on again.OL or ------- Maximum capacityexceeded. Load cell ormechanics damaged.Power supply faultyCheck the platform is installedcorrectly. Try to turn on the scaleagain. Do the calibration again------- or NULLdisplayedWeight is on the platformis below permissible limit.Pan not installedcorrectly.Power supply faulty.Load cell or mechanismfaultyCheck the platform is installedcorrectly. Try to turn on the scaleagain.Do the calibration againDisplay is unstable Goods touchingsomewhere. Air variationor any vibrations.Temperature changed .Load cell or connectionsfaulty.Power supply faultyCheck the scale is in acceptablelocation.Check the connecters and load cell.Check the power supply and batteryWeight valueincorrectCalibration error.Platform of load celltouching somewhere.Wrong weighing unitUse accurate weight for to do thecalibrationCheck the pan and load cell is installedproper and touching.Check the parameter settings.