1. Introduction
This manual provides essential instructions for the safe and efficient operation of your NEC U310W DLP Projector. The NEC U310W is a 3D Ready, ultra-short-throw DLP projector offering 3100 ANSI lumens brightness and WXGA (1280 x 800) resolution, capable of displaying High Definition 720p content. Please read this manual thoroughly before using the projector and retain it for future reference.
2. Safety Information
WARNING: To prevent fire or electric shock, do not expose this appliance to rain or moisture.
- High Temperature: The projector lamp operates at high temperatures. Allow the projector to cool down completely before handling or performing maintenance. Avoid touching the lamp housing immediately after use.
- Electrical Safety: Always connect the projector to a grounded power outlet. Do not attempt to open the projector casing; refer all servicing to qualified personnel.
- Eye Protection: Do not look directly into the projector lens when the lamp is on, as the intense light can cause eye damage.
- Ventilation: Ensure adequate ventilation around the projector. Do not block ventilation openings, as this can lead to overheating and damage.
- Lamp Disposal: Projector lamps contain mercury. Dispose of used lamps according to local regulations.
3. Product Overview
The NEC U310W projector features a compact design with an integrated ultra-short-throw lens. Key components include the lens assembly, control panel, and various input/output ports.

Figure 1: NEC U310W DLP Projector. This image displays the NEC U310W projector from an angled top-down view. Visible features include the NEC logo, ventilation grilles on the side, the lens assembly, and the control panel with power, menu, and navigation buttons. A gray cover or shield is attached to the front right side.
3.1 Control Panel
The control panel, located on the top surface of the projector, provides access to essential functions:
- Power Button: Turns the projector on or off.
- Menu Button: Accesses the on-screen display (OSD) menu.
- Navigation Buttons (Up/Down/Left/Right): Used to navigate through menu options.
- Enter Button: Confirms selections in the OSD menu.
- Exit Button: Exits the current menu or function.
- Source Button: Selects the input source.
4. Setup
4.1 Installation Orientation
The NEC U310W projector supports various installation orientations:
- Floor/Front: Projector placed on a table or floor in front of the screen.
- Floor/Rear: Projector placed on a table or floor behind a translucent screen.
- Ceiling/Front: Projector mounted to the ceiling in front of the screen (requires a compatible ceiling mount, sold separately).
- Ceiling/Rear: Projector mounted to the ceiling behind a translucent screen (requires a compatible ceiling mount, sold separately).
Ensure the projector is placed on a stable, level surface or securely mounted. Maintain adequate clearance around the ventilation grilles for proper airflow.
4.2 Power Connection
Connect the power cord to the projector's AC inlet and then to a standard electrical outlet. The projector operates on 100-240V AC, 50/60 Hz.
4.3 Connecting Input Sources
Connect your video source (e.g., computer, Blu-ray player) to the appropriate input port on the projector (e.g., HDMI, VGA). Refer to the projector's port labels for specific connections.
5. Operating the Projector
5.1 Powering On/Off
- To Power On: Press the Power button on the control panel or remote control. The power indicator light will illuminate.
- To Power Off: Press the Power button again. A confirmation message may appear. Press Power again to confirm shutdown. The projector will enter a cooling cycle before fully powering off.
5.2 Selecting an Input Source
Press the Source button on the control panel or remote control repeatedly to cycle through available input sources until your desired source is displayed.
5.3 Adjusting the Image
Use the projector's on-screen display (OSD) menu to adjust image settings such as brightness, contrast, color, aspect ratio, and keystone correction. Navigate the OSD using the Menu and navigation buttons.
6. Maintenance
6.1 Cleaning the Projector
- Exterior: Wipe the projector's exterior with a soft, dry cloth. For stubborn dirt, use a slightly damp cloth with a mild, non-abrasive cleaner.
- Lens: Use a lens cleaning cloth or a soft, lint-free cloth specifically designed for optical surfaces. Avoid harsh chemicals.
- Air Filters: Regularly check and clean the air filters to prevent dust buildup, which can lead to overheating. Refer to the full service manual for filter cleaning or replacement instructions.
6.2 Lamp Replacement
The NEC U310W uses a 280W AC lamp. The lamp life varies depending on usage and operating mode. When the lamp reaches the end of its life, a warning message will appear, and the lamp indicator light may illuminate. Refer to the full service manual for detailed instructions on safe lamp replacement. Always use genuine NEC replacement lamps.
7. Troubleshooting
This section addresses common issues you might encounter with your projector. For more complex problems, consult the full service manual or contact NEC support.
| Problem | Possible Cause | Solution |
|---|---|---|
| No image displayed | Incorrect input source selected Loose video cable connection Projector not powered on | Press the Source button to select the correct input. Check and secure all video cable connections. Ensure the projector is powered on and the power indicator is lit. |
| Image is blurry | Lens out of focus Dirty lens | Adjust the focus ring on the lens. Clean the projector lens with a soft, lint-free cloth. |
| Projector overheats and shuts down | Blocked ventilation Dirty air filter | Ensure adequate space around the projector and clear any obstructions from vents. Clean or replace the air filter. |
| Lamp indicator light is red/flashing | Lamp nearing end of life Lamp failure | Replace the projector lamp. |
8. Specifications
| Feature | Description |
|---|---|
| Model Number | NP-U310W |
| Display Technology | DLP (0.65" DMD) |
| Native Resolution | WXGA (1280 x 800) |
| Maximum Display Resolution | 1280 x 800, 1280 x 720 |
| Brightness | 3100 ANSI Lumens |
| Lamp Type | 280W AC |
| Throw Ratio | 0.30 to 1 |
| Power Requirements | 100-240V AC, 50/60 Hz |
| Installation Orientation | Floor/Front, Floor/Rear, Ceiling/Front, Ceiling/Rear |
| Product Dimensions (L x W x H) | 21 x 18.25 x 11.5 inches |
| Item Weight | 14.33 pounds |
| Special Features | 3D-Ready, Short Throw, Built-in Speakers |
9. Warranty and Support
Specific warranty details for the NEC U310W projector are not provided in this document. For information regarding warranty coverage, technical support, or service, please refer to the documentation included with your purchase or visit the official NEC website.





