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FCC Notice
This equipment has been tested and found to comply with the limits for a Class B dig-
ital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in residential installation. This
equipment generates, uses and can radiate radio frequency energy and if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, detectable by turning the equipment in question off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna
• Increase the distance between the equipment and the receiver
• Connect the equipment to an outlet on a different circuit than that which the receiver
is connected to
• Or consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC Rules. Operation is subject to following
two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference that may cause undesired operation.
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Table of Contents
Related Manuals for Vivitek DX255
Summarization of Contents
Safety Instructions
Read and Adhere to Instructions
All safety and operating instructions should be read and adhered to.
Cleaning Precautions
Unplug before cleaning. Use a damp cloth. Avoid liquid/aerosol cleaners.
Accessory and Ventilation Safety
Do not place on unstable surfaces. Keep plastic packaging away from children. Ensure ventilation.
Power Source and Servicing Safety
Verify voltage. Refer servicing to qualified personnel. Use specified replacement parts.
Moisture Condensation Handling
Avoid operating immediately after temperature changes to prevent condensation damage.
AC Power Cord Information
AC Power Cord Compatibility
Ensure the AC power cord meets country requirements and fits the outlet.
Grounding Plug Safety
Do not defeat the safety purpose of the grounding plug. Use grounding for signal integrity.
Product Introduction
Key Projector Features
Highlights DLP technology, resolutions, compatibility, connectivity, OSD, keystone, RS-232, low power, ECO, Quick Cooling, and 3D.
Important Manual Notes
Manual subject to change, no unauthorized copying, brightness variance, lamp dimming.
Projector Overview
Front View Components
Identifies IR sensor, elevator foot, projection lens, focus ring, control panel, ventilation, speaker holes, and lamp cover.
Projector Components
Rear View Ports
Details connection ports (DS230/DX251, DS234/DX255) and AC power socket.
Bottom View Mounting
Shows security bar and ceiling mount holes, with notes on ceiling installation.
Control Panel
Control Panel Buttons
Identifies SOURCE, POWER, TEMP, POWER LED, and LAMP LED indicators.
Connection Ports
DS230/DX251 Ports
Details COMPUTER, RS-232, SERVICE, AUDIO IN, VIDEO, HDMI, AUDIO OUT.
DS234/DX255 Ports
Details COMPUTER, RS-232, SERVICE, AUDIO IN, VIDEO, HDMI, AUDIO OUT.
Remote Control Functions
Basic Remote Control Buttons
Covers IR transmitter, Power, Source, Keystone, Navigation, Menu, and Mouse functions.
Advanced Remote Control Features
Specialized Remote Control Functions
Explains Left/Right mouse, Lock, Pattern, Blank, Eco, Auto Sync, Video, HDMI, Color Mode, Enter, Exit, Page Up/Down, Magnify, Volume, Freeze, Mute, Aspect, Timer.
Remote Mouse Control Operation
Remote Mouse Control Setup
Connect via USB, set input to COMPUTER, use Page Up/Down for presentations. Check connection/drivers.
Installing Remote Batteries
Battery Installation Steps
Open cover, insert batteries correctly, close cover.
Battery Safety and Handling
Caution on explosion risk, disposal, terminal alignment. Note on keeping away from children, removing for storage, fire/water risk.
Operating the Remote Control
Remote Operation Guidelines
Point at sensor, consider light interference, maintain range, avoid dropping, avoid extreme temp/humidity, keep dry, do not disassemble.
Connecting Signal Sources
General Connection Tips
Turn off equipment, use correct cables, ensure firm insertion.
DS230/DX251 Connection Diagram
Shows VGA and USB cable connections to the projector.
Connecting Various Sources
DS234/DX255 Connection Diagram
Illustrates connections for Audio, VGA, USB, HDMI, Composite Video.
Important Connection Notes
Mentions missing cables, illustration variations, and refers to page 13 for details.
Connecting Computers and Video Devices
Connecting a Computer
Using VGA or HDMI cables to connect to IBM or Macintosh computers.
Notebook Video Port Activation
Use key combinations (FN+F3/CRT/LCD) to enable external display.
Connecting Video Source Devices
Using HDMI or VGA (D-Sub) to HDTV (RCA) cables.
Video Signal Troubleshooting
Checks for video port activation and signal display issues.
Projector Operation
Powering On Procedure
Complete connections, press power button, turn on source. Auto source detection.
Powering Off Procedure
Press power button twice. Wait for cooling cycle. Disconnect power cord.
Operation Warnings
Never look into the lens. Avoid placing objects near the hot focal point.
Adjusting Projector Height
Height Adjustment Mechanism
Uses elevator and rear adjuster feet to set height and angle.
Adjusting Projector Focus and Zoom
Focus and Zoom Operation
Rotate focus ring for sharpness, slide zoom ring for image size.
Adjusting Projection Image Size
Screen Size and Projection Distance
Table and graphic to determine screen size and projection distance.
Installation Notes
Position horizontally, maintain 30cm clearance, avoid smoky environments, consider ceiling suspension.
Securing the Projector
Setting and Changing Password
Access Security Settings, change password, confirm new password.
Activating Password Function
Enable/disable password protection via Change Security option.
Setting the Presentation Timer
Presentation Timer Setup
Access menu, set timer period, display, position, and counting direction.
Activating and Canceling Timer
Enable or disable the timer function via the menu.
Menu Operation Guide
Navigating OSD Menus
Use Menu, arrow keys, and Enter to navigate and change settings.
Saving Menu Settings
Press Menu twice to leave and save changes.
Menu Tree Structure
DISPLAY Menu Options
Covers Wall Color, Aspect Ratio, Keystone, Position, Phase, H. Size, Digital Zoom, 3D, Teaching Template.
IMAGE Menu Options
Includes Display Mode, Reference Mode, Brightness, Contrast, Color Temperature, Color Manager, Reset Picture Settings.
Advanced Menu Settings
SOURCE and Settings 1
Auto Source, Presentation Timer, Language, Installation, Menu, Operation, Background Color, Splash Screen.
Settings 2 Options
Security Settings, Baud Rate, Test Pattern, Closed Caption, Reset All Settings.
Advanced Operation and Settings
High Altitude and Audio Settings
Mode for high altitudes, Mute, and Volume controls.
Lamp and Security Settings
Lamp modes, Spa mode, reset timer, password protection.
Baud Rate, Test Pattern, Closed Caption
RS-232 settings, grid test pattern, captioning options.
System Information
Current System Status Details
Shows Source, Display Mode, Resolution, Lamp Mode, 3D Format, Color System, Equivalent Lamp, Firmware Version.
Picture Settings
Display Mode and Reference Mode
Optimize image setup with pre-defined modes.
Brightness, Contrast, Color Temperature
Adjust image brightness, contrast, and color temperature settings.
Color Temperature Fine Tuning
Adjust Red, Green, Blue gain and offset for preferred color temperature.
Color Manager and Reset
Adjust RGBCMY colors, reset picture settings to factory defaults.
Source and Settings
Source Settings
Auto Source function for automatic signal searching.
Settings 1 Overview
Presentation Timer, Language, Installation, Menu, Operation, Background Color, Splash Screen.
Maintenance Procedures
General Maintenance Warning
Turn off and unplug before cleaning. Do not open covers or attempt self-service.
Cleaning the Lens
Gently wipe the lens with lens cleaning paper. Do not touch with hands.
Cleaning the Projector Housing
Wipe with a soft cloth, damp cloth with water/detergent if needed, then dry.
Lamp Replacement
Lamp Replacement Warnings
Hot lamp, explosion risk, mercury hazard, handling precautions.
Lamp Replacement Steps
Lamp Replacement Procedure
Steps for removing and installing a new lamp module.
Post-Replacement Actions
Turn on, check lamp, reset lamp hour timer, and safety notes.
Cleaning Dust Filters
Dust Filter Cleaning Schedule
Clean after every 1000 hours to prevent clogging and overheating.
Dust Filter Cleaning Procedure
Turn off, unplug, cool down, pull out filter, vacuum clean, replace if broken.
Product Specifications
Model and Display Specs
Lists Model name, Display system, Resolution, Throw ratio, Optical zoom, F/No., Focal length, Screen size, Lamp.
Terminal and Compatibility Specs
Input/Output/Control terminals, Video compatibility, Scanning frequencies.
Environment and Power Specs
Operating/Storage environment, Power requirement, Power consumption, Dimensions, Weight.
Product Dimensions
Overall Dimensions
Provides W x D x H measurements in mm.
Ceiling Mount Dimensions
Details ceiling mount installation screw size and hole dimensions.
Appendix: LED Indicator Messages
Power and Lamp LED Status
Describes Power, Temp, and Lamp LED states for Stand-by, Powering up, Operation, Cooling, and Lamp Errors.
Thermal and System LED Status
Explains LED indications for Thermal Errors (fans, temperature) and System Errors (DMD, Color Wheel).
Compatibility Modes
Supported PC Input Timings
Details resolutions, timings, frequencies, and 3D support for PC input.
Video Input Compatibility
Supported Video and Component Timings
Lists timings for video and component YPbPr input and 3D support.
Troubleshooting Guide
Start-up Problems
Addresses issues with no lights turning on or power issues.
Image Problems
Covers searching source display, out-of-focus images, flickering, or unstable images.
Remote Control Problems
Troubleshoots remote control not operating, range, and aiming issues.
RS-232 Protocol
RS-232 Settings and Basic Commands
Covers settings, Power, Source Selection, and Audio Control commands.
RS-232 Picture Settings Commands
Display Mode Commands
Commands to set Brightness, Presentation, sRGB, Movie, Standard, User1, User2.
Picture Setting Commands
Controls for Contrast, Brightness, Color, Sharpness, and Aspect Ratio.
RS-232 Advanced Commands
Baud Rate and Lamp Control Commands
Commands for setting baud rate and controlling lamp mode.
Miscellaneous Commands
Controls for Blank, Freeze, Menu, Up, Down, Left, Right, Enter.
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