3M X21i User Manual

Digital Projector X21i/X26i
Operator's Guide
Thank you for purchasing this projector.
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3M X21i Specifications

General

Resolution	XGA (1024x768)
Contrast Ratio	2000:1
Display Type	LCD
Projection Technology	3LCD
Lamp Life	4000 hours (normal mode), 6000 hours (eco mode)
Projection Size	30" to 300"
Input Ports	VGA, S-Video, Composite Video, HDMI, Audio RCA
Output Ports	VGA

Summary

Introduction

Safety Warnings and Cautions

Important safety instructions and warnings for user protection.

Setting Up the Projector

Projector Arrangement Guidelines

Instructions for optimal projector placement and installation environment.

Arrangement Safety Precautions

Crucial safety warnings regarding projector placement and stability.

Environmental Placement Advice

Connecting External Devices

Step-by-step instructions for connecting various input sources like computers.

Accessory Safety and Notes

Important safety warnings and notes related to projector accessories.

Power Supply Connection

Procedure for connecting the projector to a power source.

Power Connection Safety

Critical safety warnings and guidelines for power connections.

Security Safety Warnings

Safety precautions when using security features like the security bar.

Remote Control Operations

PC Mouse and Keyboard Functionality

Using the projector as a PC mouse and keyboard.

PC Input Safety and Notes

Power Operations

Turning On the Projector

Procedure for powering up the projector using the STANDBY/ON button.

Turning Off the Projector

Procedure for powering down the projector using the STANDBY/ON button.

Power and Lens Cover Safety

Safety precautions regarding power connection and lens cover handling.

Projector Operation

Volume Control and Muting

Input Signal Selection

How to select and switch between different input sources.

Zoom and Focus Adjustment

Positioning and Auto-Adjustment

Fine-tuning image placement and using automatic adjustment features.

Keystone Distortion Correction

Correcting trapezoidal image distortion for a rectangular display.

Screen Freezing and Blanking

Menu System Navigation

How to access, navigate, and operate the projector's on-screen menus.

Menu System

Picture Menu Settings

Controls brightness, contrast, gamma, color temperature, color, tint, and sharpness.

Image Menu Settings

Input Menu Settings

Auto Keystone and Keystone Settings

Auto Search and Keystone Options

My Button Customization

Communication Settings

Network Features

Wireless Setup Configuration

Guides through setting up wireless network connections and security.

Wired Network Setup

Instructions for configuring wired network connections.

Presentation Mode Setup

Security Features

Password Change Procedure

Steps for changing the system's security password.

MyScreen Password Management

PIN Lock Configuration

Enabling and managing the PIN lock feature for projector access.

Transition Detector Setup

My Text Password and Display

Presentation Tools

PC-LESS Presentation Overview

Using the projector for presentations directly from USB storage.

Thumbnail Mode Operations

Slideshow Mode Configuration

USB Display

Hardware and Software Requirements

Starting USB Display

Procedure for connecting and initiating the USB display function.

Maintenance

Lamp Replacement Procedure

Step-by-step guide for safely replacing the projector lamp.

Lamp Safety Warnings

Critical safety information regarding high voltage, temperature, and disposal.

Air Filter Cleaning and Replacement

Troubleshooting

Related Messages and Solutions

Interpreting system messages and error codes for troubleshooting.

Indicator Lamp Status Guide

Understanding the meaning of different POWER, LAMP, and TEMP indicator states.

Symptoms and Solutions Table

A comprehensive list of common symptoms and their corresponding solutions.