PLUS Vision U4-237 Troubleshooting, Check the following matters before requesting servicing

Page 56

Troubleshooting

Check the following matters before requesting servicing.

Problem

Power does not turn on

Check

•Is the power cord plugged into a power outlet?

•Is the lamp cover properly mounted?

•Is the projector’s temperature high? To protect the projector, the power can- not be turned on when the projector’s temperature is abnormally high.

•Has the lamp reached the end of its service life?

•Depending on the timing with which the power cord is plugged in (the power is turned on), it may happen that the STANDBY indicator (LED) does not light and the power does not turn on. This is not a malfunction. If this hap- pens, unplug the power cord then plug it back in.

Reference Page

E-21

E-60

E-55

E-55

—

No image is produced

• Is a connected input selected?

E-50

 

• Is the cable properly connected to the input terminal?

E-15 –20

 

• When a computer is connected, are signals being output from the computer?

E-17

 

• Does the signal being input have a frequency usable with this projector?

E-62

 

• Are the brightness and contrast adjusted to the minimum?

E-42

 

• Is the STATUS indicator lit a steady red or blinking red?

E-55

 

• When the component signal of the DVD player is connected with the DVI

E-50

 

connector and the image is not output, is [Input Settings] of the DVI connec-

 

 

tor properly selected?

 

 

• For a analog RGB input, has the picture been properly adjusted?

E-42, 43

 

 

 

Image is distorted

• Is the projector properly installed?

E-24

 

• For trapezoidal (keystone) distortion, perform keystone adjustment.

E-29, 48

 

 

 

Image is out of focus

• Is the lens properly focused?

E-25

 

• Are the screen and projector installed at the proper distance?

E-14

 

• Does the projection distance exceed the focusing range?

E-14

 

• Is there condensation on the lens, etc.?

—

 

If the projector is moved from a cool storage area to a warm place and the

 

 

power is turned on, condensation may form on the lens or internal optical

 

 

parts. If this happens, wait until the condensation has evaporated before

 

 

using the projector.

 

 

 

 

Image is not in proper po-

• For a computer input, are the horizontal and vertical positions properly ad-

E-43

sition and is not displayed

justed?

 

properly

• Does the input signal have a compatible resolution and frequency? Check

E-62

 

the computer’s resolution.

 

 

 

 

Video image is crushed

• If the image is crushed in the horizontal or vertical direction or if it is not

E-27

 

displayed over the entire screen, select a different aspect ratio.

 

 

 

 

Colors of the overall image

• When a component signal is being input, is the color space setting proper?

E-45

are strange

• For a composite input, is the hue properly adjusted?

E-42

 

 

 

Characters flicker or colors

• From the menu, select “Image” and adjust the clock frequency and phase.

E-42, 43

are offset for analog RGB

 

 

inputs

 

 

 

 

 

Cannot select the menu

• Other than [Setup], [Option] and [Info], selection will not be possible unless

—

name

a signal is being input to the projector and the image/picture is projected.

 

 

 

 

Remote control unit does

• Are the remote control unit’s batteries worn? Replace with new batteries.

E-12

not operate

• Is there an obstacle between the remote control unit and the projector’s

E-12

 

remote control signal sensor?

 

 

• Is the remote control unit outside of range?

E-12

 

• Are you pointing the remote control unit’s transmitter towards the projector’s

E-12

 

remote control signal sensor?

 

 

 

 

STATUS indicator is lit red

• See “When an indicator is lit or blinking”.

E-55

or blinking red

 

 

 

 

 

E-56

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Contents U4-237 Precautions DOC Compliance NoticeInstallation Power SupplyCleaning Lamp ReplacementMajor Features Table of Contents Adjustments and Settings Table of ContentsMenu Operations MiscellaneousChecking the Supplied Accessories Remote control includes one button batteryPower cable 1.8 m / 5.9 feet Audio cable Mini plug, 2 m / 6.6 feetPocket Velcro strap Cable storage pouch Checking the Supplied AccessoriesCarrying case for projector and accessories Names of the Main Unit Parts PC connector E-15, 16 Audio connector E-20 Built-in Security SlotNames of the Main Unit Parts PC card slotNames of the Remote Control Parts Preparing the Remote Control Button Battery ReplacementRemote Control Range Using the remote control for the first timeProcedure Up to Projecting to the Screen Placement Guide Screen Size and Projection DistanceDVI-D cable Available as an option. Order code Personal Computers with a DVI ConnectorConnections with Personal Computer Personal Computers with a Mini D-Sub 15-Pin Connector Connecting Personal Computers and Video EquipmentPersonal computer DVI/mini D-Sub 15-pin conversion cable Supplied itemTo Output the External Output Signal of a Notebook Computer Manufacturer Model KeyConnections with Composite Signals Video Equipment with Video ConnectorsVideo Equipment with S-VIDEO Connectors Video cable Suppled item Video cable Supplied itemConnections with Component Signals Green Blue Red Cb CrPb Pr Green Blue RedConnections with Audio Connectors Audio cable Supplied itemAudio conversion cable Supplied itemOperating Switch on the projector powerRemote control operation Press the Standby button Power Cable Connections and Switching the Power On/Off Press the Enter button to setThis completes the selection of the display language CursorUnplug the power cable FinishingAdjustment of the Projection Screen Adjustment of the Projection ScreenAdjust the projection image to the screen Zoom ringMaking Adjustments with the Adjusters Raising the projection imageLowering the projection image Focus ringAutomatic Adjustment of Analog RGB When Auto Source is OnWhen Auto Source is Off General OperationGeneral Operation Video Signals / Component SignalsSelection of Aspect Ratio Freezing a Moving Picture Cancelling Video and Audio TemporarilyLamp Mode Adjustment of the Volume KeystonePress the Zoom button to enlarge the image Enlargement of the Image and Video MovementImage can also be moved in the following circumstances Using the Presentation Timer Press the Enter button and start the timerTimer Display Moving the Position of the Timer DisplayProtecting the Projector with the Security Lock Input the password using the number buttons 1 to Canceling the password/Changing the passwordCanceling the password Changing the passwordUsing the Quick Menu Content of Adjustments and SettingsMenu Operation Method Names and Functions of Buttons Used for Menu OperationsAdjustment Bar and Settings Contents Adjustment BarMenu Screen Names and Functions Menu Operation MethodPerforming Menu Operations Menu Display Press the Menu button to display the menuSub menu Making Adjustments/SettingsThis condition al- lows selection of the item name Selecting Another Menu Name with Remote Control Operation RGB Menu name Item Name Sub Menu Setup TerminalPicture Adj. Picture Adjustment ImageBrightness / Contrast / Color / Tint / Sharpness Picture Adj. / Fine Picture / H Position / V PositionReset Press of the Enter button forces the resetFine Picture PositionSelect the preset color mode ColorQuick Color Adj GammaSelection contents at the time of YPbPr input Color TempWhite Color SpaceWhite Balance Video Signals ViewAspect FilterPower cable has been unplugged Vertical Flip / Horizontal FlipKeystone Save ViewSetup Auto Power OffAuto Source Menu PositionPresentation Timer SetupTo start the timer Input FormatOption LanguageOn Screen BackgroundNetwork Password Startup ScreenSecurity Lock OptionFactory Default Lamp Timer ResetInfo StatusInfo Resolution / FrequencyLamp Timer When an Indicator is Lit or Blinking Thermal ProtectorTroubleshooting Check the following matters before requesting servicingCleaning Cleaning a Soiled Projector Main UnitCleaning the Inside of the Projector Dirty LensReplacing the Lamp Cartridge Replacing the Lamp Cartridge Remove the lamp cartridgeMount the lamp cover Reset the Lamp TimerMount the new lamp cartridge Specifications OpticalElectrical MechanicalSignal Resolution Frequency VideoTable of Supported Frequencies Digital AnalogCabinet Dimensions 242 190 Unit mm inch2004

U4-237 specifications

The PLUS Vision U4-237 is a state-of-the-art presentation tool designed for modern meeting environments. Its sleek design and advanced features make it a versatile solution for both professional and educational settings.

One of the standout characteristics of the U4-237 is its impressive resolution. With a Full HD display, the content is presented with incredible clarity and detail, ensuring that every presentation, video, and image is sharp and easy to see. This high resolution is particularly beneficial for detailed diagrams, graphs, and text-heavy slides, where clarity is essential for audience comprehension.

The U4-237 is equipped with advanced projection technology, including 3LCD technology, which enhances color accuracy and brightness. This feature ensures that vibrant colors are presented faithfully, making it ideal for a variety of content types, from colorful charts to intricate presentations.

Ease of connectivity is another key feature of the PLUS Vision U4-237. It offers multiple input options, including HDMI, VGA, and USB, allowing users to easily connect laptops, tablets, and other devices. Wireless connectivity options are also available, supporting seamless presentations without the hassle of tangled cables.

The U4-237 boasts a user-friendly interface, which simplifies navigation through menus and settings. This intuitive design allows users to quickly adjust settings like brightness and contrast, ensuring optimal performance in varying lighting conditions. The built-in speaker enhances sound delivery, negating the need for additional audio equipment during presentations.

Additionally, the PLUS Vision U4-237 is designed with energy efficiency in mind. It incorporates a long lamp life, reducing maintenance costs and downtime. This reliability makes it a perfect choice for regular use in classrooms or boardrooms.

Another notable feature is the comprehensive range of projection modes available, including eco mode, which conserves energy while still delivering quality images. The device also includes a remote control for convenient operation from a distance, making it easy to manage presentations smoothly.

In conclusion, the PLUS Vision U4-237 stands out for its high-definition display, advanced 3LCD technology, versatile connectivity options, user-friendly interface, and energy-efficient design. It is an excellent investment for anyone looking to elevate their presentation experience, whether in a professional or educational environment.
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