Table of Contents ................................................................................... 1
Usage Notice .......................................................................................... 2
Safety Information .........................................................................................2
Precautions....................................................................................................3
Eye Safety Warnings .....................................................................................5
Introduction............................................................................................. 6
Package Overview.........................................................................................6
Product Overview ..........................................................................................7
Main Unit ................................................................................................................ 7
Control Panel ......................................................................................................... 8
Remote Control .................................................................................................... 10
Installation ............................................................................................ 11
Warning Indicator ................................................................................................. 14
User Controls ....................................................................................... 17
Control Panel ....................................................................................................... 17
Remote Control .................................................................................................... 18
How to operate .................................................................................................... 20
Menu Tree ............................................................................................................ 21
IMAGE ................................................................................................................. 24
DISPLAY .............................................................................................................. 26
SYSTEM .............................................................................................................. 30
SETUP ................................................................................................................. 34
Appendices........................................................................................... 38
Troubleshooting ...........................................................................................38
Image Problems .................................................................................................. 38
Other Problems ................................................................................................... 39
Replacing the Lamp.....................................................................................42
Compatibility Modes ....................................................................................44
able of contents
1
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Do you have a question about the HD20 and is the answer not in the manual?
Questions and answers
No audio is coming through. How to address this?
The provided context does not contain specific information on fixing audio issues with the Optoma HD20 projector. However, to connect audio with the listed equipment:
1. The Optoma HD20 does not have built-in speakers, so audio must be routed separately.
2. Connect your source device (e.g., Blu-ray player, streaming device) to the Onkyo A-9050 amplifier using an appropriate audio cable (such as RCA or optical, if supported).
3. Connect the Polk speakers to the amplifier's speaker outputs.
4. Ensure the amplifier is set to the correct input source.
5. If using HDMI for video, check if the source device has an audio output that can be connected to the amplifier.
If there is no sound, verify cable connections, input settings, and volume levels on all devices.
This answer is automatically generated