38This symbol on the nameplate means the product is Listed by UnderwritersLaboratories Inc. It is designed and manufactured to meet rigid U.L. safety standardsagainst risk of fire, casualty and electrical hazards.APPENDIXWARNING :High voltages are used to operate this projector. Do not attempt to open the cabinet.If the problem still persists after following all operating instructions, contact the sales dealer where youpurchased the projector or the service center. Give the model number and explain the difficulty. We will adviseyou how to obtain service.Remote Control Unitdoes not work. Check the batteries. Check the ALL-OFF switch on the Remote Control Unit is set to “ON.”. Make sure nothing is between the Remote Receiver and the Remote Control Unit. Make sure you are not too far from the projector when using the Remote Control Unit.Maximum operating range is 16.4’ (5m).Problem: Try these SolutionWireless Mousefunction does notwork. Check the cable connection between the projector and the computer. Check the mouse setting on your computer. Turn the projector on before you turn on the computer.