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NEC DT20 Multi-Function LCD Projector User Manual
The NEC DT20 is a multi-function LCD projector designed to project documents directly from a scanner, personal computer screens, and video/DVD images. It features a high-resolution 2 million pixel single-array color CCD camera for faithful reproduction of subtle midtones in color documents.
The manual details the setup, operation, and maintenance of the device. Key safety precautions include avoiding blockage of air vents to prevent overheating, handling the hot lamp cover with care, and ensuring proper ventilation during installation. It also covers troubleshooting common issues like lamp replacement procedures.
NEC DT20 specifications
| Model | DT20 |
|---|---|
| Type | LCD projector with 3 primary colors |
| Panel size | 1.0 in diagonal, 4:3 aspect |
| Resolution (pixels) | 786,432 (1,024 × 768) × 3 |
| Zoom lens | 1 × to 1.25 ×, f=36.5‑45.6 mm, F1.7‑2.2 |
| Lamp power | 260 W mercury lamp |
| Image size range | 32‑300 in diagonal (projection distance 1.4‑13.9 m) |
| Brightness | 2800 ANSI lumens |
| Audio output | 1 W × 2 stereo |
| Operating temperature / humidity | 0‑35 °C, 20‑80 % RH |
| Power supply | 100‑120 V / 220‑240 V AC, 50/60 Hz |
| Power consumption | 390 W (100‑120 V), 370 W (220‑240 V) |
| Input current | 4.5 A (100‑120 V), 2.2 A (220‑240 V) |
| Dimensions (W × D × H) | 400 mm × 315 mm × 145 mm |
| Weight | 7.3 kg |
All NEC DT20 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What types of content can be projected?
The projector can project documents from a scanner, personal computer screens, and video/DVD images.
How many hours is the lamp rated for?
The lamp is designed to forcibly turn off if used beyond 1500 hours.
How do I replace the lamp safely?
Turn off the lamp, disconnect the power cable, wait at least one hour after the fan stops, then replace the lamp. Do not attempt replacement while the projector is powered.
What is the brightness of the DT20 projector?
The projector provides 2800 ANSI lumens of brightness.
What temperature range is safe for operating the projector?
The projector can be used in temperatures from 0 °C to 35 °C (32 °F to 95 °F).
How long can the lamp be used before it must be replaced?
The lamp automatically shuts off after about 1 500 hours of operation.