Toshiba TLP780U TLP781U owner manual Before calling service personal, Symptom Cause Correction

Page 68

Before calling service personal

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

CONTENTS

68

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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Page 67 Page 69
Contents TLP780U Safety Precautions Important Precautions Important Safety Instructions Important Safety Instructions HeatObject and Liquid Entry Damage Requiring Service Do not carry by the camera arm Strong light may cause damage to your eyes or sightPower supply cord selection Contents Refer to Names of each part on the main unitExplanation here is only for the model without the document Menu 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 outletProjector placement angle adjustment Foot adjuster Foot adjuster release buttonLift up Lower Turn clockwise to lift up Turn counterclockwise to lowerCeiling-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 Lamp lights and the start up display appears Projection on the screenPress ON/STANDBY Turn on the connected equipment and put it in playback mode Press Enter to confirmLanguage Dialog box to find and designate this fileSelect the input source by pressing Input repeatedly Press Input and hold for two secondsPress Enter Input source selection menu appearsAdjust the picture size by turning Focusing ringStill picture is recommended for focusing Zooming leverPress VOL/ADJ +/- to adjust volume About the LCD PanelPress ON/STANDBY again Turning the power offPress ON/STANDBY after using the projector Adjusting 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 Full 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 ImagingDocument camera Preparation of the document imaging camera Camera 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 pictureWhen finished, turn off the light and close it Press Camera Gain +/- to improve view of aCamera subject which is too dark or vivid Put back the armOverlaying 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 clothTrouble indications Main unit sideAir filter cleaning Unplug the power cord Take off the air filter coverClean the air filter Detach the air filterAir filter Air filter cover Assemble the air filterMount the air filter cover Lens and main unit cleaning Cleaning the lensCleaning the main unit Replacing the intake, exhaust fans and air filterLamp replacement Unplug the power cord Wait until the lamp gets cool enoughTake off the lamp cover on the bottom panel Pull out the lampReset the lamp timer Load a new lampAttach the lamp cover Slide the cover into place and tighten the two screwsBefore calling service personal Symptom Cause CorrectionBefore calling service personal Mini D-sub 15pin Connector Do not connect anythingApplicable 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 separatelyYour Responsibility Limited two 2 Years Warranty of Parts and LaborStep-by-step procedure how to obtain warranty service Limited Warranty

TLP780U TLP781U specifications

The Toshiba TLP780U and TLP781U are opto-isolators designed to provide excellent performance in various applications, ensuring high levels of electrical isolation between input and output circuits. These devices are part of Toshiba's extensive portfolio of opto-couplers, which leverage advanced technologies to meet the demands of modern electronic systems.

One of the most notable features of the TLP780U and TLP781U is their high isolation voltage, which is rated up to 5000Vrms. This is particularly important in applications where safety and protection of sensitive components from high voltages are crucial. By providing robust electrical isolation, these opto-isolators help in preventing damage from voltage spikes and interference.

Both the TLP780U and TLP781U utilize a high-speed GaAlAs infrared LED as the light source, coupled with a phototransistor on the output side. This configuration enables rapid data transmission, making these devices suitable for high-speed applications. The TLP780U boasts a high-speed variant, while the TLP781U is designed for lower-speed requirements, offering flexibility depending on the application's needs.

In terms of package design, the TLP780U and TLP781U come in a compact and reliable DIP (Dual In-line Package) configuration. This allows for easy integration into printed circuit boards (PCBs), while also ensuring stable performance in various operational environments. Their compact size is particularly beneficial in space-constrained applications.

Another important characteristic of these devices is their wide operating temperature range, from -40°C to 100°C. This wide range ensures reliable operation in diverse environments, making them suitable for industrial, automotive, and consumer applications. This reliability is further enhanced by the devices' long operational lifespan, reducing the need for frequent replacements.

In summary, the Toshiba TLP780U and TLP781U opto-isolators deliver essential electrical isolation, high-speed performance, and versatile operational capabilities. Their combination of advanced technologies and robust features positions them as ideal solutions for interfacing circuits, signal isolation, and data transmission in various industries. Whether for safety-critical systems or general signal processing, these opto-isolators provide the performance and reliability needed in today's electronic designs.
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