Toshiba 790, 791 manual Before calling service personal, Symptom Cause Correction

Page 68

Before calling service personal

CONTENTS

68

Check the following points before asking for support service. Refer also to “Trouble indications”. 62

 

 

Symptom

Cause

Correction

Page

 

 

 

 

 

The power does not come on.

• The power cord is disconnected.

Firmly plug in the power cord.

 

19

 

• The lamp cover is not attached correctly.

Attach the cover correctly.

 

67

The power turns off while

• The ambient temperature of the projection room is too high.

Lower the ambient temperature of the projection room,

 

62

using the projector.

 

and turn the power on.

 

 

No image appears.

• The lens cover is on.

Take off the lens cover.

 

19

 

• The wrong input is selected.

Select the input source correctly.

 

30

 

 

 

 

 

 

• The muting mode is on.

Press MUTE to restore the picture.

 

37

 

• The “Brightness” adjustment is at its darkest.

Make the “Brightness” adjustment.

 

45

 

• The source is not correctly connected to the projector.

Connect the source correctly to the projector.

22

- 25

 

 

 

 

 

No sound is heard.

• The wrong input is selected.

Select the input source correctly.

 

30

 

• The muting mode is on.

Press MUTE to restore the sound.

 

37

 

• The sound volume is at it’s minimum.

Adjust the sound volume.

 

32

 

 

 

 

 

 

• The source is not correctly connected to the projector.

Connect the source correctly to the projector.

22

- 25

Desired input source cannot

• Input is not set so that it can be selected with the INPUT button. By

Set from the menu screen so that the source can be

 

45

be selected by the INPUT

default, only the Analog RGB(1) and Video input modes can be

selected with the INPUT button.

 

30

button.

selected.

 

 

 

Analog RGB(1) input or Y/PB/

• The COMPUTER IN 1 connector's input setting is wrong.

On the menu screen, set for the proper input signal type.

 

45

PR input colors are not right.

 

 

 

 

 

 

 

 

 

Analog RGB(2) input image

• The COMPUTER IN 2 connector’s input setting is wrong.

On the menu screen, set for the proper input signal type.

 

45

does not appear.

• The signal cable type is wrong.

Use a proper signal cable.

 

23

Digital RGB input image does

• The COMPUTER IN 2 connector’s input setting is wrong.

At the menu screen, set for the proper input signal type.

 

45

 

 

 

 

 

not appear.

• The signal cable type is wrong.

Use a proper signal cable.

 

23

The image is blurred.

• The lens is dirty.

Clean the lens with a blower or lens cleaner, etc.

 

65

Focusing is uneven.

• The picture is out of focus.

Focus the picture.

 

31

 

 

 

 

 

 

• The projection distance is not appropriate.

Adjust the distance properly.

 

18

 

• The projecting light is not hitting the screen squarely.

Adjust the projecting direction so that the light hits the

 

18

 

 

screen squarely.

 

 

 

 

 

 

 

 

• The “Brightness”, “Contrast”, “Sharpness” or “Phase” adjustments

Make the “Picture” adjustments.

 

45

 

are not correct.

 

 

 

The picture is dim.

• The “Brightness” or “Contrast” adjustments are not correct.

Make the “Picture” adjustments.

 

45

 

 

 

 

 

 

• The lamp life is ending.

Replace the lamp.

 

66

Others

Continued

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Contents TLP790 TLP790Safety Precautions Only CanadaSave Original Packing Materials Avoid Volatile LiquidMoisture Condensation Exemption ClausesVentilation Power SourcesSource of Light Important Safety Instructions Accessories Object and Liquid EntryDo not place the product vertically Stack InhibitedDamage Requiring Service Replacement PartsSafety Check ServicingImportant Safety Instructions Do not carry by the camera armDo not move the projector while the arm is still erect Do not look into the arm light while it is litPower supply cord selection EuroContents Names of each part on the main unit Lens cover Zooming lever Air intakeMenu button Input button Names of each part on the main unitTop side Right side Names of each part on the remote control Install the batteries Loading batteriesOpen the cover Attach the coverRear side Remote control operationFront side Floor-mounted projector placement ViewerSide view Determine the screen size projected on the screenTop view Connect the power cord Light Orange Power cord SuppliedTake off the lens cover Insert the other end into a wall outletTurn clockwise to lift up Turn counterclockwise to lower Projector placement angle adjustmentFoot adjuster Foot adjuster release button Lift up Lower Ceiling-mounted projector placement Viewer Translucent screenConnecting a computer Computer in 1 connector Connecting a computer Computer in 2 connector Connecting video equipment Connectionsand Projector operation control by a computer ComputerHow to use the output connector Remote control Projection on the screenPress ON/STANDBY Lamp lights and the start up display appearsTurn on the connected equipment and put it in playback mode Select a desired language withSelection buttons / , Press EnterPress Input and hold for two seconds Select the input source by pressing InputRepeatedly Adjust the picture size by turning Focusing ringStill picture is recommended for focusing Zooming leverPress the button to decrease volume Press VOL/ADJ +/- to adjust volumePress the + button to increase volume Turning the power off Press ON/STANDBY after using the projectorIndicators Press ON/STANDBY againAdjusting the picture automatically Input full screen video signals from the inputSource computer and project the image Press Auto SETConfirm the keystone distortion Correcting the keystone distortionPress Keystone Keystone adjustment finishes After confirming that V-keystone is selected on the menuIcon appears in the mute mode Cutting off the picture and sound temporarilyPress Mute Sound and picture are cut off temporarilyIcon appears in the freeze mode Freezing the picturePress Freeze Picture freezesPress Resize Icon appears in the resize modeEnlarging the picture size Sub-picture is displayed Displaying PIP Sub-picturesPress PIP Displaying Information Press CallOperating a computer by the remote control Operating the menu screen Press MenuPress Menu once again Select the item with the selection ButtonsAdjust with VOL/ADJ + Select the item with selection buttonsEnter Press Enter Press EnterGuide Menu adjustments and settings ShutterFull Menu adjustments and settings Picture To operate Full MENU, refer toFull Menu adjustments Position Full Menu adjustments Color Full Menu adjustments and settings Audio Full Menu adjustments and settings Display Settings AdjustmentsFull Menu settings Default setting Full Menu settings Reset Reset allPIP menu setting Lights when the white balance is locked To turn on or off the overlay functionTo turn on or off the light Camera control panelPreparation of the document imaging camera ImagingDocument cameraCamera head over them Press ARM LightSet a document to be projected Press Camera to select the camera input mode Move the camera head to adjust the size of the picturePress Camera Gain +/- to improve view of a Camera subject which is too dark or vividFollow the steps of Preparation of the document imaging Camera in reverseOverlaying projection Balance Press W.BALANCE to turn the Lock indicator Locking the white balanceProject a white paper and enlarge it to fill ScreenCorrecting illuminated defects With the document camera operating, fullyCover the camera lens with a piece of black Paper or clothIndicators Trouble indicationsControl panel Main unit sideAir filter cleaning Unplug the power cord Take off the air filter coverClean the air filter Cleaner’s nozzleAssemble the air filter Mount the air filterLens and main unit cleaning Cleaning the lensCleaning the main unit Replacing the intake, exhaust fans and air filterLamp replacement Pull out the lampCover Handle to pull out the lampReset the lamp timer Load a new lampAttach the lamp cover ScrewsBefore calling service personal Symptom Cause CorrectionBefore calling service personal Pin assignment of Computer in connector ConnectorConnector Mini D-sub 15pinApplicable signal Applicable computer signalSignal Timing Horizontal Signal Timing Vertical Timing chartCompatible components video signal Y/PB/PR Applicable signalCompatible Video and S-Video signal Command list Controlling the projector by using RS-232CSignal assignment of RS-232C Interface format Controlling the projector by using RS-232C VCL MO0 MS0 PIP Specifications Main unitLiquid crystal display Projection lensSpecifications AccessoriesReplacement lamp Sold separately

791, 790 specifications

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