69Appendix– Check PC adjustment or Screen and adjust them.See pages 32-33, 36-37 .–PIN code lock is being set. Enter a PIN code ("134" or numbersyou have set). See pages 20, 57-58.– 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 56.– Unlock the Key lock function for the remote control function. Seepage 56.– Check the status of the projector with referring to "Indicators andprojector Condition". See page 73.– 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 57.– Contact the dealer where you purchased the projector or the servicecenter.The image is distorted or runs off.PIN code dialog box appears atstart-up.The Remote Control does not work.Indicator blinks or lights.The exclamation mark appears onthe screen.Top control does not work.Unable to unlock the Logo PIN codelock, Security key lock or SecurityPIN code lock.