Sanyo PLC-XU20E Owner's Manual page 36

APPENDIX
Problem:
Remote Control Unit
does not work.
Wireless Mouse
function does not
work.
WARNING :
High voltages are used to operate this projector. Do not attempt to open the cabinet.
36
Check the batteries.
Check the ALL-OFF switch on the Remote Control Unit is set to "ON.".
Make sure anything is blocking 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 5m.
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.
Try these Solution