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NEC PA803U - User Manual

NEC PA803U
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Projector
PA803U/PA723U/PA653U/
PA853W/PA703W/PA903X
Users Manual
Please visit our web site for User’s Manual in the latest version:
http://www.nec-display.com/dl/en/pj_manual/lineup.html
• ThePA723UandPA703WarenotdistributedinNorthAmerica.
ModelNo.
NP-PA803U/NP-PA723U/NP-PA653U/NP-PA853W/NP-PA703W/NP-PA903X

Table of Contents

Questions and Answers

  • J
    Jessica SmithAug 16, 2025
    Why won't my NEC Projector turn on?
    • W
      Willie JohnsonAug 16, 2025
      If your NEC Projector doesn't turn on, it might be due to its internal temperature being too hot or too cool as a protective measure. Wait a moment and try turning it on again. Also, the lamp may fail to light. Wait a full minute and then turn on the power again. If you're using the projector at high altitudes (approximately 5500 feet/1700 meters or higher), make sure to set the [FAN MODE] to [HIGH ALTITUDE] to prevent overheating.
  • D
    David GarzaAug 22, 2025
    How to fix NEC PA803U Projector remote control that is not working?
    • E
      Eric Hansen IVAug 22, 2025
      If the remote control for your NEC Projector isn't working, try these steps: * Install new batteries. * Ensure there are no obstructions between the remote and the projector. * Make sure you are within 40 m/1575 inch of the projector.
  • D
    Deborah CareyAug 25, 2025
    Why does my NEC Projector keep turning off?
    • A
      Anthony HansonAug 26, 2025
      If your NEC Projector keeps turning off, make sure that the [OFF TIMER], [AUTO POWER OFF], and [PROGRAM TIMER] settings are disabled.
  • K
    Kevin HallAug 27, 2025
    How to fix a blurred picture on NEC Projector?
    • P
      Patricia CabreraAug 27, 2025
      If the picture on your NEC Projector is blurred: * Adjust the focus. * Reposition the projector to improve its angle to the screen. * Ensure that the distance between the projector and screen is within the adjustment range of the lens. If the lens has been shifted beyond its guaranteed range or there is condensation on the lens, let the projector stand until the condensation clears.
  • L
    Leslie LewisAug 30, 2025
    How to correct an image that isn't square on my NEC PA803U Projector?
    • J
      james65Aug 30, 2025
      If the image from your NEC Projector isn’t square to the screen, try repositioning the projector to improve its angle. If the image is trapezoidal, use the [GEOMETRIC CORRECTION] feature.
  • Q
    qyuSep 2, 2025
    Why does the picture on my NEC PA803U Projector suddenly become dark?
    • C
      Cynthia AlexanderSep 2, 2025
      If the picture on your NEC Projector suddenly becomes dark, it might be in Forced ECO mode due to high ambient temperature. Try lowering the internal temperature by selecting [HIGH] for [FAN MODE].
  • E
    Erin BarajasSep 5, 2025
    How to stop image scrolling on NEC PA803U Projector?
    • J
      johnsonjeanSep 5, 2025
      If the image on your NEC Projector is scrolling vertically or horizontally, check the computer’s resolution and frequency. You can also manually adjust the computer image using the Horizontal/Vertical settings in the [IMAGE OPTIONS].
  • M
    Michael SheltonSep 8, 2025
    How to fix unusual color on NEC Projector?
    • C
      Christopher LowerySep 9, 2025
      If the color tone or hue on your NEC Projector seems unusual, check if an appropriate color is selected in [WALL COLOR]. You can also adjust the [HUE] setting in [PICTURE].
  • T
    Tina SmithSep 12, 2025
    How to resolve screen flicker on NEC PA803U?
    • A
      ashley89Sep 12, 2025
      If a flicker appears on the screen of your NEC Projector, and you are using it at altitudes less than approximately 5500 feet/1700 meters, setting the [FAN MODE] to [HIGH ALTITUDE] can cause the lamp to overcool. Set the [FAN MODE] to a mode other than [HIGH ALTITUDE].
  • S
    Sharon MooreNov 18, 2025
    What to do if there is no picture on my NEC PA803U?
    • L
      Lisa MooreNov 18, 2025
      If your NEC Projector isn't displaying a picture, there are several things you can check: * Ensure the lens cover is open. * Verify that the correct input source is selected. * Make sure all cables are properly connected. * Adjust the brightness and contrast settings in the menu. * If the Security function is enabled, enter your registered keyword. * Try reinstalling your graphics card driver if using HDMI or DisplayPort. * Reset the settings to factory defaults using the [RESET] option in the Menu. Also, be sure to connect the projector and notebook PC while the projector is in standby mode and before turning on the power to the notebook PC. If the screen goes blank while using your remote control, it may be the result of the computer’s screen-saver or power management sof...

Summary

Projector Introduction

Users Manual Overview

Provides an overview of the projector's user manual content.

Important Safety Information

Safety Cautions

Details essential safety precautions for using the projector.

Product Disposal Guidance

Provides instructions for environmentally sound disposal of the projector.

Installation and Safeguards

Installation Precautions

Outlines conditions to avoid when installing the projector to prevent malfunction.

Fire and Shock Hazard Warnings

Fire and Shock Precautions

Details specific precautions to prevent fire and electrical shock hazards.

Handling and Remote Control Precautions

Remote Control Precautions

Provides guidelines for safe and effective use of the remote control.

Lamp and Performance Details

Lamp Replacement Guide

Explains the procedure and precautions for replacing the projector lamp.

High Altitude Operation Mode

Details settings for operating the projector at high altitudes to prevent overheating.

Specialized Viewing Modes

3 D Viewing Health Precautions

Advises on health precautions and best practices for viewing 3D content.

Auto Power Off Function

Describes the automatic power-off feature for energy saving.

1. Introduction

Whats Included in the Box

Lists all items included in the projector package for user verification.

1. Introduction

Projector Introduction

Introduces the projector, its features, and capabilities.

Initial Installation Guidelines

Covers basic installation requirements and considerations for the projector.

2. Projecting an Image

Flow of Projecting an Image

Provides a step-by-step guide for projecting an image with the projector.

2. Projecting an Image

Computer and Power Connection

Details how to connect the computer and power cord to the projector.

Power Cord Stopper Usage

Explains the use of the power cord stopper to prevent accidental disconnection.

2. Projecting an Image

Turning on the Projector

Describes the procedure to power on the projector and indicators.

Lens Calibration Procedure

Guides on performing lens calibration for optimal image adjustment.

2. Projecting an Image

Selecting the Input Source

Explains how to choose the desired input signal for projection.

2. Projecting an Image

Adjusting Picture Size and Position

Details how to adjust the projected image's size and position using various controls.

2. Projecting an Image

Focus Adjustment

Explains how to use the focus ring to achieve a sharp image.

2. Projecting an Image

Zoom Adjustment

Describes how to adjust the zoom level for image magnification.

2. Projecting an Image

Adjusting the Tilt Foot

Details how to adjust the projector's tilt using the foot screws.

2. Projecting an Image

Optimizing Computer Signal

Explains automatic adjustment for optimal computer signal quality.

Adjusting Volume

Describes how to adjust the audio output volume.

2. Projecting an Image

Turning off the Projector

Provides instructions on how to properly turn off the projector.

3. Convenient Features

Turning off Image and Sound

Explains how to temporarily disable video and audio output.

3. Convenient Features

On-Screen Menu Display Position

Guides on how to reposition the on-screen menu display.

3. Convenient Features

Freezing and Enlarging Pictures

Explains how to freeze the current image and enlarge it.

3. Convenient Features

Eco Mode Settings

Details how to select and check the energy-saving Eco Mode.

3. Convenient Features

Carbon Meter for Energy Savings

Explains how to view the CO2 emission reduction from Eco Mode usage.

3. Convenient Features

Keystone Distortion Correction

Guides on correcting trapezoidal distortion for a rectangular image.

3. Convenient Features

USB Mouse Operation

Explains how to use a USB mouse for menu and geometric correction.

3. Convenient Features

Projector Security Function

Details how to set a keyword to prevent unauthorized projector operation.

3. Convenient Features

Projecting 3 D Videos

Covers setup and procedure for projecting 3D content.

3 D Viewing Health Precautions

Advises on health precautions and best practices for viewing 3D content.

3. Convenient Features

HTTP Browser Projector Control

Explains how to operate the projector using a web browser over a network.

3. Convenient Features

Browser Operation Handling

Details how to specify addresses for browser-based projector control.

3. Convenient Features

Network Settings Configuration

Guides on configuring wired LAN settings for network connectivity.

3. Convenient Features

Lens Control Operations

Explains how to control lens focus, zoom, and shift.

3. Convenient Features

Storing Lens Shift, Zoom, Focus

Details how to store and recall lens adjustment settings.

4. Multi-Screen Projection

Multi-Screen Projection Capabilities

Introduces the capabilities of multi-screen projection setups.

4. Multi-Screen Projection

Displaying Two Pictures Simultaneously

Explains how to use PIP and Picture-by-Picture modes for dual display.

4. Multi-Screen Projection

Edge Blending Functionality

Details how to blend edges between multiple projector images for seamless display.

5. Using On-Screen Menu

Using the Menus

Explains the basic navigation and operation of the on-screen menu system.

5. Using On-Screen Menu

Menu Elements

Describes the various components and symbols found in the on-screen menus.

5. Using On-Screen Menu

List of Menu Items

Provides a comprehensive list of all menu items and their functions.

5. Using On-Screen Menu

Menu Descriptions: Input Settings

Details the functions and options within the Input menu.

5. Using On-Screen Menu

Adjust Picture Settings

Explains how to adjust picture settings like Mode, Preset, and Detail Settings.

5. Using On-Screen Menu

Adjust Image Options

Covers image adjustments like Clock, Phase, Blanking, and Overscan.

5. Using On-Screen Menu

Adjust Video Settings

Explains video settings such as Noise Reduction and Deinterlace.

5. Using On-Screen Menu

Configure 3 D Settings

Details settings for stereo viewer, filter, format, and L/R invert for 3D.

5. Using On-Screen Menu

Display Menu Options: PIP;Picture-by-Picture

Describes settings for Picture-in-Picture and Picture-by-Picture modes.

5. Using On-Screen Menu

Display Menu Options: Geometric Correction

Explains options for Keystone, Cornerstone, and Corner projection correction.

5. Using On-Screen Menu

Display Menu Options: Edge Blending

Details settings for blending projector edges for seamless displays.

5. Using On-Screen Menu

Setup Menu Navigation: Menu(1)

Covers settings like Language, Color Select, Input Display, and Eco Message.

5. Using On-Screen Menu

Setup Menu Navigation: Installation Settings

Details projector orientation, screen type, wall color, and fan mode settings.

5. Using On-Screen Menu

Setup Menu Navigation: Fan Mode Settings

Explains how to select the fan speed based on operating conditions.

5. Using On-Screen Menu

Setup Menu Navigation: Light Mode Settings

Covers Eco Mode and manual light adjustment for multi-screen setups.

5. Using On-Screen Menu

Setup Menu Navigation: Reference White Balance

Details how to adjust white balance for optimal color reproduction.

5. Using On-Screen Menu

Setup Menu Navigation: Control Settings

Covers administrator mode, security, and communication speed settings.

5. Using On-Screen Menu

Setup Menu Navigation: Setting Projector ID

Guides on assigning a unique ID for multi-projector operation.

5. Using On-Screen Menu

Setup Menu Navigation: Network Settings Configuration

Details wired LAN setup, profiles, DHCP, IP address, and email alerts.

5. Using On-Screen Menu

Setup Menu Navigation: Source Options Configuration

Covers Auto Adjust, Audio Select, Default Source, Seamless Switching.

5. Using On-Screen Menu

Setup Menu Navigation: Power Options Configuration

Details standby modes, direct power on, auto power on, and auto power off.

5. Using On-Screen Menu

Resetting to Factory Defaults

Explains how to reset various settings to their factory default values.

5. Using On-Screen Menu

Information Menu Display: Usage Time

Details how to view usage time, lamp hours, and carbon savings.

6. Connecting Equipment

Mounting the Lens

Provides instructions and precautions for mounting optional lenses.

6. Connecting Equipment

Analog RGB Signal Connection

Details how to connect the projector using an analog RGB cable.

6. Connecting Equipment

Digital RGB Signal Connection

Explains how to connect using HDMI and DisplayPort cables.

DVI Signal Connection Cautions

Highlights precautions and procedures for connecting via DVI.

6. Connecting Equipment

Component Input Connection

Details the connection process for component video signals.

6. Connecting Equipment

HDMI Input Connection Guide

Explains how to connect HDMI sources like Blu-ray players or PCs.

6. Connecting Equipment

HDBaseT Transmission Device Connection

Guides on connecting to HDBaseT devices using LAN cables.

6. Connecting Equipment

Connecting Multiple Projectors

Explains how to connect multiple projectors for larger displays.

6. Connecting Equipment

Portrait Projection Setup

Details how to set up the projector for vertical projection.

6. Connecting Equipment

Connecting to Wired LAN

Provides instructions for setting up a wired LAN connection.

7. Maintenance

Cleaning the Projector Filters

Explains how to clean the projector's intake filters to prevent overheating.

7. Maintenance

Cleaning the Lens

Provides instructions for safely cleaning the projector lens.

Cleaning the Cabinet

Details how to clean the projector's exterior cabinet.

7. Maintenance

Replacing the Lamp

Step-by-step guide on how to replace the projector lamp.

7. Maintenance

Replacing the Projector Filters

Explains the process for replacing the projector's air filters.

8. Appendix

Throw Distance and Screen Size

Provides data on throw distances and screen sizes for various lenses.

8. Appendix

Projection Range by Lens

Illustrates the projection range for each available lens type.

8. Appendix

Screen Size and Dimensions Tables

Lists screen dimensions in inches and centimeters for WUXGA/WXGA and XGA types.

8. Appendix

Lens Shifting Range Explained

Details the horizontal and vertical lens shift capabilities of the projector.

8. Appendix

Compatible Input Signal List

Lists all compatible input signals, resolutions, and refresh rates for HDMI, DP, HDBaseT, RGB.

8. Appendix

Detailed Projector Specifications

Provides technical specifications including model, panel size, light source, and connectivity.

8. Appendix

Cabinet Dimensions Diagram

Shows the physical dimensions of the projector in millimeters and inches.

8. Appendix

Mounting the Cable Cover

Details how to attach the optional cable cover for a cleaner setup.

8. Appendix

Pin Assignments for Connectors

Provides pinout details for Computer, HDMI, and DisplayPort connectors.

8. Appendix

Changing Background Logo

Explains how to customize the projector's background logo using the Virtual Remote Tool.

8. Appendix

Troubleshooting: Indicator Features

Explains the function of each indicator light on the projector.

8. Appendix

Troubleshooting: Error Messages

Lists common error messages indicated by lights and their meanings.

8. Appendix

Troubleshooting: POWER Indicator and Standby States

Explains the meaning of the POWER indicator light and projector standby states.

8. Appendix

Common Problems and Solutions

Provides solutions for frequently encountered projector issues.

8. Appendix

Troubleshooting Check List

A checklist to help diagnose and solve projector problems before contacting support.

8. Appendix

Register Your Projector

Instructions for registering the projector to activate warranty and service programs.

NEC PA803U Specifications

General IconGeneral
Matrix size0.76 \
Native aspect ratio-
Projection distance0.74 - 20.9 m
Projection technologyLCD
Contrast ratio (typical)10000:1
Screen size compatibility40 - 500 \
Projector native resolution1080p (1920x1080)
Keystone correction, vertical-30 - 30 °
Vertical synchronization (max)120 kHz
Vertical synchronization (min)24 kHz
Keystone correction, horizontal-40 - 40 °
Horizontal synchronization (max)153 kHz
Horizontal synchronization (min)15 kHz
3DNo
Full HDYes
Supported video modes480i, 480p, 576i, 576p, 720p, 1080i, 1080p, 2160p
Analog signal format systemNTSC, NTSC 4.43, PAL, PAL 60, PAL M, PAL N, SECAM
Supported graphics resolutions640 x 480 (VGA), 800 x 600 (SVGA), 1024 x 768 (XGA), 1280 x 1024 (SXGA), 1400 x 1050 (SXGA+), 1600 x 1200 (UXGA), 1920 x 1080 (HD 1080), 1920 x 1200 (WUXGA), 2560 x 1600 (WQXGA), 4096 x 2160
Lamp power420 W
Lamps quantity1 lamp(s)
Light source typeLamp
Service life of light source3000 h
Service life of light source (economic mode)5000 h
FocusAuto
Focal length range- mm
Vertical lens shift range-0.1 - 0.6 °
Horizontal lens shift range-0.3 - 0.3 °
Number of optional lenses supported8
HDMI connector typeFull-size
Serial interface typeRS-232
USB 2.0 ports quantityUSB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
S-Video inputs quantity0
Noise level39 dB
CertificationUL60950-1, FCC 15 B (ANSI C63.4.2014), C22.2 No.60950-1-07, ICES-003 6 (ANSI C63.4:2014)
Noise level (economic mode)33 dB
Power sourceAC
AC input voltage100 - 240 V
AC input frequency50 - 60 Hz
Power consumption (standby)0.7 W
Power consumption (typical)566 W
Power consumption (PowerSave)- W
Power consumption (economy mode)390 W
Storage temperature (T-T)-10 - 50 °C
Operating temperature (T-T)5 - 40 °C
Operating relative humidity (H-H)20 - 80 %
PlacementDesktop
Product typeLarge venue projector
Product colorWhite
RMS rated power10 W
Harmonized System (HS) code85286200
Weight and Dimensions IconWeight and Dimensions
Depth411 mm
Width503 mm
Height168 mm
Weight10200 g

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