A SERVICE OF

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Appendices
58
RS232 connection fail:
Replacing the lamp:
Remote Control Problems
If the remote control does not work
Check the operating angle for the remote control is approximately
±22.5°.
Make sure there are not any obstructions between the remote con-
trol and the HD81’s Box. Move to within 6 m (20 ft) of the HD81’s
Box.
Make sure batteries are inserted correctly.
Make sure batteries are exhausted. If so, replace weak batteries in
the remote control.
Projector side don’t
have IR receiver.
IR receiver are only on
front of Box side and IR
Module.