This digital laser level has been designed to be a low-maintenance tool,. However,in order to maintain its performance, follow these steps.,1, HANDLE the tool with care_ Treat it as a precision optical device, such as a cameraor binoculars,2 AVOID exposing the tool to shock, continuous vibration or extreme hotor cold temperatures3. STORE the tool indoors and in a safe place,4. The Level is designed to be weather resistant and construction site tough. If the levelis splashed with mortar or other construction site residue, simply wipe clean with adamp cloth. DO NOT immerse the level in water.5, Aluminum surfaces can be cleaned with a non-abrasive powder.6. Check the batteries regularly to avoid corrosion. REMOVE the batteries from the toolif it is not going to be used for an extended period.7, DO NOT try to take the level aparLPROBLEMLaser pointprojectionis weak.Laser pointis not projected.The LCD screenwill not turn on.CAUSEBatteries are low in power.Laser On Demand Switchis not OnBatteries are installedincorrectly.Battery power is low.Laser diode is damagedBatteries are installedincorrectly.Battery voltage is low.The LCD screen isdamaged.SOLUTIONReplace with newbatteries.Check to make surethe switch is in the"On" position.Reinstall batteries withcorrect polarity.Replace withnew batteries,Take tool to SearsService CenterReinstall batterieswith correct polarity.Replace with newbatteries.Take tool to SearsService Center16