Optoma h78dc3 ユーザーズマニュアル

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4. Verify the resolution is less than or equal to 1280 x 720.
5. Select the “Change” button under the “Monitor” tab .
6. Click on “Show all devices. ” Next, select “Standard monitor

types” under the SP box; choose the resolution mode you need

under the “Models” box.

7. Verify that the resolution setting of the monitor display is less

than or equal to 1280 x 720.

4

If using a Notebook PC:
1. First, follow the steps above to adjust resolution of the

computer.

2. Switch the Notebook PC display to the “external display only”

or “CRT only” mode.

4

If you experience difficulty changing resolutions or your
monitor freezes, restart all the equipment including the projector.

4

If using a Notebook PC:
Some Notebook PCs may deactivate their own screens when a

second display device is in use. Each has a different way of

reactivating.  Refer to your computer’s documentation for

detailed information.

4

Use “Phase” to correct it. See page 22 for more information.

4

Change the monitor color setting on your computer.

4

Use “Frequency” to make an adjustment. See page 22 for more
information.

4

Check and reconfigure the display mode of your graphics card to
ensure compatibility.

4

Make sure the transparent lens cap is removed.

4

Use 

  or 

 button to focus the image.

4

Make sure the projection screen is between the required distance
3.3 to 32.8 feet (1.0 to 10.0 meters) from the projector.