S381 - Projector OPTOMA - Free user manual and instructions
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| Product Type | DLP Projector |
| Brand | OPTOMA |
| Model | S381 |
| Native Resolution | XGA (1024x768) |
| Brightness | 3000 ANSI lumens |
| Contrast | 20000:1 |
| Lamp life (normal mode) | 5000 hours |
| Lamp life (economic mode) | 10000 hours |
| Vertical keystone correction | ±40 degrees |
| Zoom | 1.1x manual |
| Dimensions (L x D x H) | 314 x 224 x 102 mm |
| Weight | 2.4 kg |
| Power supply | 100-240V AC, 50/60Hz |
| Power consumption (normal mode) | 245 W |
| Standby power consumption | < 0.5 W |
| Video inputs | 1x HDMI, 1x VGA, 1x composite RCA |
| Audio input | 1x 3.5 mm mini-jack |
| Audio output | 1x 3.5 mm mini-jack |
| Serial control port | RS-232 (9-pin) |
| Built-in speaker | 1x 2 W |
| Noise level (normal mode) | 28 dB |
| Noise level (economic mode) | 25 dB |
| Security features | Automatic shutdown, password lock, Kensington lock |
| Maintenance | Air filter cleaning every 500 hours, lamp replacement after wear |
Frequently Asked Questions - S381 OPTOMA
How do I connect my computer to the OPTOMA S381 projector?
Use a VGA or HDMI cable depending on your computer. Connect one end to the appropriate port on the projector and the other to your PC. Select the correct source using the menu or remote control.
How do I clean the projector's air filter?
Turn off and unplug the projector. Open the filter cover, remove the filter and clean it with a vacuum or compressed air. Replace the filter and close the cover. Clean every 500 hours of use.
The projector lamp does not turn on, what should I do?
Check that the power cable is securely connected and the power indicator is on. Wait for the lamp to cool down if the projector was hot. If the problem persists, replace the lamp with a new compatible OPTOMA lamp.
How do I adjust the keystone image?
Use the vertical keystone correction via the OSD menu or remote control. Press the 'Keystone' button and adjust with the directional keys until you get a rectangle.
What is the recommended projection distance?
The distance varies depending on the desired image size. For example, for a 100-inch image, place the projector about 3-4 meters from the screen. Refer to the distance table in the manual.
How do I replace the projector lamp?
Turn off and unplug the projector, let it cool. Open the lamp cover, unlock the lamp module, remove the old lamp and insert the new one. Close the cover and reset the lamp counter in the menu.
The projector displays 'No signal', why?
Check that the cable is properly connected to both the source and the projector. Ensure the source is turned on and the selected input (HDMI, VGA, etc.) matches the one you are using.
How do I use the automatic standby function?
Go to the 'Settings' menu > 'Automatic standby' and enable it. The projector will automatically turn off after a defined period of inactivity (default 30 minutes).
Can I use the projector without a screen?
Yes, the projector can project onto a white wall or smooth surface. For better image quality, a projection screen is recommended.
How do I reset the lamp counter?
Go to the 'Settings' menu > 'Lamp counter' > 'Reset'. Confirm the operation. This operation is necessary after replacing the lamp.
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