Optoma HD91 User's Guide download pdf (Page 51)

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Appendices

Other Problems

The projector stops responding to all controls

If possible, turn off the projector, then unplug the power cord `

and wait at least 20 seconds before reconnecting power.

Remote Control Problems

If the remote control does not work

Check the operating angle of the remote control is within ±25° `

both horizontally and vertically of on of the IR receivers on the

projector.

Make sure there are not any obstructions between the remote `

control and the projector. Move to within 6 m (20 ft) of the

projector.

Make sure batteries are inserted correctly. `

Replace batteries if they are exhausted. `

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Optoma HD91 User's Guide Page 51