EF21R - Video projector EPSON - Free user manual and instructions
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| Product Type | Video Projector |
| Brand | Epson |
| Model | EF21R |
| Dimensions (W x D x H) | Approx. 8.5 x 6.0 x 3.0 inches |
| Weight | 2.4 lbs (1.1 kg) |
| Power Supply | AC 100-240V, 50/60 Hz |
| Power Consumption | 110 W (Normal mode) |
| Display Technology | 3LCD |
| Resolution | 1280 x 720 (HD-ready) |
| Brightness | 1,500 lumens (color & white) |
| Contrast Ratio | 15,000:1 |
| Lamp Type | LED |
| Lamp Life | Up to 20,000 hours (Normal mode) |
| Projection Size | 30 to 150 inches diagonal |
| Throw Ratio | 1.2:1 (short throw) |
| Connectivity | HDMI, USB-A, audio out |
| Built-in Speaker | Yes, 2W |
| Keystone Correction | Vertical (auto) & horizontal (manual) |
| Noise Level | 28 dB (Eco mode) |
| Operating Temperature | 41°F to 95°F (5°C to 35°C) |
| Cleaning Instructions | Wipe the exterior with a soft dry cloth. Avoid liquid cleaners. |
| Safety Precautions | Do not look directly into the lens. Ensure proper ventilation. |
| Spare Parts & Repairability | Lamp module and filter are replaceable. Contact Epson support. |
Frequently Asked Questions - EF21R EPSON
How do I connect my laptop to the Epson EF21R projector?
Use an HDMI cable to connect your laptop to the projector's HDMI port. Ensure both devices are powered on and select the correct input source using the remote or menu.
What is the optimal projection distance for a 100-inch screen?
With a throw ratio of 1.2:1, place the projector approximately 8.3 feet (2.5 meters) from the screen to achieve a 100-inch diagonal image.
Can I use the projector without a screen?
Yes, you can project onto a clean white wall. However, a projection screen improves brightness and contrast.
How often should I clean the air filter?
Clean the air filter every 100 hours of use or more frequently in dusty environments. A clogged filter can cause overheating.
What is the lamp life and how do I replace it?
The LED lamp lasts up to 20,000 hours in normal mode. Replacement is simple: remove the lamp cover, disconnect the old lamp, and insert a new one. Refer to the manual for details.
Why is the projector not turning on?
Check that the power cord is securely connected and the outlet is working. Also ensure the lamp cover is closed properly. If the problem persists, contact Epson support.
How can I adjust the keystone correction?
Press the 'Menu' button on the remote, navigate to 'Keystone', and use the arrow keys to correct vertical and horizontal distortion. Auto keystone is also available.
Does the projector support 4K input?
No, the EF21R has a native resolution of 720p. It can accept 1080p signals but will downscale them to 720p.
Can I use a USB drive to play media?
Yes, connect a USB drive containing video, photo, or audio files. The projector's built-in player supports common formats like MP4, JPEG, and MP3.
Is the projector compatible with a ceiling mount?
Yes, the projector has a standard tripod mount (1/4 inch) on the bottom. For ceiling mounting, use a compatible third-party mount or Epson's optional ceiling mount kit.
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