DU400 - Projector OPTOMA - Free user manual and instructions
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| Product type | DLP projector |
| Brand | OPTOMA |
| Model | DU400 |
| Native resolution | WUXGA (1920 x 1200) |
| Brightness | 4,000 ANSI lumens |
| Contrast | 10,000:1 |
| Lamp life | Up to 5,000 hours (normal mode) |
| Keystone correction | Vertical and horizontal (±30°) |
| Zoom | Optical 1.3x |
| Video inputs | 2x HDMI, 1x VGA, 1x composite |
| Connectivity | USB-A, RS-232, RJ45 (network) |
| Dimensions (W x D x H) | 31.5 x 24.5 x 11 cm |
| Weight | 4.5 kg |
| Power supply | 100-240 V AC, 50/60 Hz, consumption 350 W |
| Noise level | 28 dB (eco mode) |
| Maintenance and cleaning | Clean the air filter every 500 hours; use a soft cloth for the lens. |
| Safety | Do not look directly into the light beam; turn off before replacing the lamp. |
| Spare parts and repairability | Replacement lamp model BL-FU200A; air filter available. |
Frequently Asked Questions - DU400 OPTOMA
How to replace the lamp of the OPTOMA DU400 projector?
Turn off the projector and unplug it. Let it cool for 30 minutes. Open the lamp compartment (located under the device), unlock the used lamp, remove it, and insert the new lamp model BL-FU200A. Close the compartment and reset the hour counter in the menu.
Why won't my projector turn on?
Check that the power cord is properly plugged in and the outlet works. Ensure the power indicator is on. If the indicator flashes red, it may indicate a lamp or temperature problem. Consult the error code section in the manual.
How to clean the air filter of the DU400?
Locate the air filter on the side of the projector. Remove the cover and take out the filter. Use a low-power vacuum cleaner to remove dust, or wash it with warm soapy water if necessary. Dry it completely before reinstalling. Clean every 500 hours of use.
The projected image is blurry, what to do?
Turn the focus ring on the lens to adjust sharpness. If the image remains blurry, check the projection distance relative to image size. Use the optical zoom if necessary. Ensure the source resolution matches the projector's native resolution.
How to connect a computer to the projector?
Use an HDMI or VGA cable to connect your computer to the corresponding input on the projector. Select the appropriate source via the Source button on the remote control or control panel. For audio, a separate audio cable may be needed if using VGA.
The remote control is not working, what to check?
First replace the batteries (two AAA batteries) respecting polarity. Ensure no obstacle blocks the infrared sensor on the front of the projector. Check that the remote is in projector mode (not mouse mode). If the problem persists, contact support.
How to correct keystone (distorted image)?
Use automatic or manual keystone correction. In the OSD menu, go to Image Settings -> Keystone Correction. Adjust the vertical and horizontal sliders until the image is rectangular. You can also tilt the projector or use lens shift (if available).
What is the minimum and maximum projection distance?
With the 1.3x zoom, for a 100-inch (diagonal) image, the projection distance is approximately 2.9 to 3.8 meters. Refer to the distance table in the full manual for other image sizes.
Can the projector be used to watch 3D videos?
No, the DU400 model is not 3D compatible. It is designed for presenting 2D content (documents, videos, photos) in high resolution.
How to reset the lamp counter after replacement?
In the OSD menu, go to Settings -> Maintenance -> Lamp Reset. Hold down the 'Enter' button for 3 seconds until the counter resets to zero. This operation is necessary after each lamp change.
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