68Appendix– Check PC adjustment or Screen and adjust them.See pages 33-34, 37-38 .– PIN code lock is being set. Enter a PIN code ("134" or numbersyou have set). See pages 21, 56-57.– Make sure your computer is connected to the projector with USBcable. See page 16.– Check cable connection between the projector and your computer.See page 16.– Check the batteries.– Make sure no obstruction is between the projector and remotecontrol.– Make sure you are not too far from the projector when using theremote control. Maximum operating range is 16.4'(5 m).– Make sure the code of the remote control is conformed to theprojector’s code. See page 55– Unlock the Key lock function for the remote control function. Seepage 56.– Check RESET/ON/ALL-OFF switch on the remote control is set to“ON”. See page 13.– Check the status of the projector with referring to "Indicators andprojector Condition". See page 72.– Check the connection between the projector and your computer.– Check the mouse setting on you computer.– Make sure the mouse driver is installed on your computer,otherwise, the remote control can not be used as a wireless mouse.– Make sure the signal is from the computer, otherwise, the remotecontrol can not be used as a wireless mouse.– Turn on the projector before turning on the computer.– Your operation is invalid. Operate correctly.– The top control is not available if the top control is locked at Key lockunder Security of SETTING section. See page 56.– Contact the dealer where you purchased the projector or the servicecenter.The image is distorted or runs offPIN code dialog box appears atstart-upPage Up/Down function does notworkThe Remote Control does not workIndicator blinks or lightswireless Mouse function does notworkThe exclamation mark appears onthe screenTop control does not workUnable to unlock the Logo PIN codelock, Security key lock or SecurityPIN code lock