Vivitek D851 - User Manual

Questions and Answers

T
Tina AllenAug 17, 2025
What to do if there is no light from my Vivitek D851 Projector?
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  jonesaprilAug 17, 2025
  If your Vivitek Projector has no light, check the power cable to ensure it's securely connected. Verify the power source by testing it with another electrical device. Restart the projector and ensure the Power LED is green. If you recently replaced the lamp, try resetting the lamp connections. If the issue persists, consider replacing the lamp module or putting the old lamp back in and having the projector serviced.
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Kimberly WilliamsAug 20, 2025
How to fix a Vivitek D851 when no image appears on the screen?
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  Stephanie AlvaradoAug 20, 2025
  If no image appears on the screen when using your Vivitek Projector, verify the settings on your notebook or desktop PC. If that doesn't work, turn off all equipment and power up again in the correct order.
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robert81Aug 22, 2025
How to flip the image on a Vivitek D851 Projector?
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  Patrick BrooksAug 23, 2025
  To flip the image on your Vivitek Projector, check the Projection setting on the Installation I menu of the OSD.
D
denise79Aug 26, 2025
What to do if my Vivitek D851 Projector remote control is not working?
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  Kathryn SmithAug 26, 2025
  If your Vivitek Projector isn't responding to the remote control, try these steps: make sure you are pointing the remote control directly at the remote sensor on the projector and that nothing is blocking the path between the remote and the sensor. Also, try turning off any fluorescent lights or other Infrared-enabled devices in the room that might be interfering. Check the battery polarity and replace the batteries. If none of these steps work, have the remote control serviced.
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Stacie NelsonAug 28, 2025
Why does the lamp go off on my Vivitek D851?
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  Natalie LiAug 28, 2025
  Power surges can cause the lamp to turn off on your Vivitek Projector. Try re-plugging the power cord and, when the Power LED is on, press the power button. If the issue continues, replace the lamp module or put the old lamp back in the projector and have the projector serviced.
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Adam CohenAug 31, 2025
How to troubleshoot no sound on a Vivitek Projector?
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  Brianna AguirreAug 31, 2025
  If there is no sound from your Vivitek Projector, first adjust the volume on the remote control and the audio source. Then, check the audio cable connection and test the source audio output with other speakers. If the problem persists, have the projector serviced.
F
Frank EdwardsSep 3, 2025
How to fix a blurred image on a Vivitek D851?
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  Thomas WilkersonSep 3, 2025
  If the image on your Vivitek Projector is blurred, adjust the focus on the projector. You can also press the Auto button on the remote control or projector. Ensure the projector-to-screen distance is within the specified 10-meter (33-feet) range and check that the projector lens is clean.
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Rachel BurgessSep 5, 2025
How to correct a trapezoid image on a Vivitek D851 Projector?
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  Kimberly DiazSep 5, 2025
  To correct a trapezoid image (wider at the top or bottom) on your Vivitek Projector, position the projector so it is as perpendicular to the screen as possible. You can also use the Keystone button on the remote control or projector to correct the problem.
K
Kristin MorenoSep 8, 2025
How do I fix a streaked image on my Vivitek D851?
- B
  boydmeaganSep 8, 2025
  If the image on your Vivitek Projector is streaked, set the Frequency and Tracking settings on the Computer menu of the OSD to the default settings. To ensure the problem is not caused by a connected PC’s video card, connect to another computer.
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Amber JacksonSep 12, 2025
Why doesn't the color of the projected image match the source image on my Vivitek D851?
- U
  uperrySep 12, 2025
  If the color of the projected image does not match the source image on your Vivitek Projector, adjust the Color Temperature and Gamma settings on the Image menu of the OSD.

Summary

Safety Precautions

Important Safety Information and Symbols

Key safety instructions and explanation of warning symbols.

General Safety Guidelines

Essential safety practices for projector operation.

Operation and Maintenance Safety

Power Safety and Component Care

Safe handling of power cords, batteries, lamp replacement, and cleaning.

Getting Started: Initial Setup

Unpacking and Packing Checklist

Verifying all included items after unpacking the projector.

Remote Control Overview and Parts

Remote Control Component Identification

Identifies all buttons and parts of the projector's remote control.

Initial Setup Procedures: Remote Control

Inserting Remote Control Batteries

Step-by-step guide for battery installation in the remote control.

Connecting External Devices to Projector

Input Device Connectivity Guide

Explains how to connect various video and audio sources to the projector.

Powering the Projector On and Off

Startup and Shutdown Sequence

Step-by-step instructions for turning the projector on and off correctly.

Security and Access Control Features

Setting a Security Lock Password

Guide to setting up a password for unauthorized access prevention.

Adjusting Projector Level and Angle

Height and Tilt Adjustment Instructions

Instructions for leveling and angling the projector using its adjusters.

Image Quality Adjustments

Zoom, Focus, and Keystone Correction

How to adjust image size, sharpness, and shape for optimal display.

On-Screen Display (OSD) Menu Navigation

OSD Menu Structure Overview

Overview of OSD Menu Options and Ranges

Visual guide to available settings, their categories, and their operational ranges.

Detailed OSD Sub-Menu Navigation

OSD Sub-Menu Hierarchy and Settings

Breakdown of specific settings within each sub-menu category for detailed configuration.

Image Menu Settings

Adjusting Core Image Parameters

Image Menu Advanced Features

Advanced Color and Temperature Settings

Image Menu Color Management

Hue, Saturation, and Gain Adjustment per Color

Computer Menu Settings

Optimizing Computer Input Display

Video and Audio Menu Settings

Configuring Video Source and Audio

Installation Menu - Part 1

General Installation Settings

Installation Menu - Advanced Settings

Security, Wall Color, and Timer Configuration

Installation Menu - Part 2

System, Lamp, and Status Configuration

Installation Menu - Advanced Features

OSD, Peripheral, and 3 D Settings Configuration

Network Configuration

Setting Up Network Connectivity Parameters

Details for configuring IP address, subnet mask, gateway, and DNS.

Network Connection via LAN;RJ45

Connecting Projector to Network with RJ45 Cable

Network Setup on PC

Configuring Local Area Connection Properties

Projector Network Configuration Steps

Setting Projector IP Address and Network Mode

System Management and Status

Factory Reset and System Status Display

Maintenance Procedures: Lamp Replacement

Replacing the Projection Lamp Safely

Detailed, step-by-step guide for safely replacing the projector lamp.

Lamp Maintenance: Hour Counter Reset

Resetting the Lamp Hour Counter

Cleaning the Projector

Lens and Case Cleaning Instructions

Troubleshooting Guide

General Troubleshooting Steps and Strategies

Initial checks, common problem-solving tips, and effective troubleshooting methodologies.

Image Display Troubleshooting

LED Error Messages and Image Problems

Explains error codes and common issues related to image display quality.

Other Troubleshooting Categories

Lamp, Remote, and Audio Problems Solutions

Solutions for common issues related to the lamp, remote control, and audio.

Vivitek D851 Specifications

General

Brightness	5000 ANSI Lumens
Resolution	XGA (1024 x 768)
Native Resolution	XGA (1024 x 768)
Max. Resolution	UXGA (1600 x 1200)
Zoom Ratio	1.2x
I/O Ports	HDMI, VGA, USB, RS-232, Audio In/Out
Projection Technology	DLP
Lamp Life	4000 hours (Normal mode), 6000 hours (Eco mode)
Throw Ratio	1.5-1.8:1
Speaker	10W
Input Connectors	VGA