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Manual Kensington DT20

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  • Kensington DT20 - page 1

    English Deutsch Français Italiano Española Svenska Multi-Function LCD Pr ojector DT20 User’ s Manual ...

  • Kensington DT20 - page 2

    E-2 Thank you for purchasing the NEC DT20 LCD Projector . Please read this manual carefully in order to use the projector properly . After reading this, please keep it in a safe place together with the w arranty sheet. ● Features • Three hand y features in a single body . The projector f or the multimedia age 1. Documents, catalogs and other pr ...

  • Kensington DT20 - page 3

    E-3 W arnings and Safety Precautions ● W arning Symbols To aler t the user to impor tant saf ety precautions, the follo wing symbols are used in this manual and on the product. Make sure you understand what these sym- bols mean bef ore operating the projector . WARNING : Death or serious injur y ma y result if this warning is ignored. CAUTION : I ...

  • Kensington DT20 - page 4

    E-4 • Do not look through the lens. • Do not look through the lens into the projector during operation. The powerful ra ys passing through the lens could damage the e y es. • Do not put the projector in unstable places. • Do not put the projector in unstable places such as on unstable desks or slopes. Doing so could cause the projector to d ...

  • Kensington DT20 - page 5

    E-5 • Care of the projector •T o pre vent risk of accidents , alwa ys disconnect the po wer plug bef ore clean- ing the projector . • Clean the lens surf ace with a commercial b lower or lens cleaning paper . Wiping with tissue paper or a handkerchief can damage the lens. •T o clean the cabinet, operation panel, and glass surf ace, wipe gen ...

  • Kensington DT20 - page 6

    E-6 Note the following things •A noise occurs because the internal pressure of the New Super High pres- sure lamp gets extremely high. The unit is designed so that no pieces of glass come out of it when the lamp explodes. •H ow ev er , the gas inside of the lamp can escape and looks lik e white smok e. It will not cause any fire. Remedy • If ...

  • Kensington DT20 - page 7

    E-7 • Care of the power cord and plug • Do not put the po wer cord near a heater . Doing so could cause the sheath of the cable to melt do wn, resulting in fire or electric shock. • Do not connect or disconnect the po wer cord with wet hands . Doing so could cause electric shock. • Be sure to pull out the power cord and disconnect any cable ...

  • Kensington DT20 - page 8

    E-8 Contents Pa rt Names and Functions ............................................................ E-9 Projector ................................................................................................................... E-9 Te r minal P anel .................................................................................................. ...

  • Kensington DT20 - page 9

    E-9 Pa rt Names and Functions Pa rt Names and Functions Projector Lens cap Adjustable Feet ■ Extended Press lightly on the left side of the handle and it rotates 180˚ and comes out. Handle ■ Retracted Rotate the handle while pressing on its right side to store it. Remote Control Sensor Focus adjuster Turn this to adjust the focus. See page E-3 ...

  • Kensington DT20 - page 10

    E-10 Scanner Place documents or printed matter here to project images when OHP is selected. See page E-31 Air Vent B Air is discharged from the inside to the outside through this vent. Sensor Adjustable Feet Adjustable Feet Lamp Unit Cover (bottom of main unit) The scanner lamp unit is housed inside this cover. See page E-54. Speakers Power (Cord c ...

  • Kensington DT20 - page 11

    E-11 Pa rt Names and Functions ■ T erminal P anel q PC Video Input w PC Audio Input e RGB Video Output r T est (maintenance) t A udio Output y S-VIDEO Input u Video Source Video Input i Video Source Audio Input w yu i er q t TEST PC AUDIO IN2 PC AUDIO IN1 PC AUDIO OUT S-VIDEO VIDEO RGB-OUT RGB-IN 2 RGB-IN 1 V LR Input terminal for the PC analog R ...

  • Kensington DT20 - page 12

    E-12 ■ Buttons and Indicator Lights OHP SCROLL ON/ ST ANDBY LAMP/ CO VER TEMP BRIGHTNESS ZOOM POWER MENU MUTE KEYST ONE PC1/PC2 VIDEO o !0 !1 wer q yu i t Name q POWER Button w TEMP LED e LAMP/CO VER LED r ON/ST ANDBY LED t INPUT SELECT Buttons (OHP , PC1/PC2, VIDEO) y KEYST ONE Button u MUTE Button i BRIGHTNESS Buttons Description • Press this ...

  • Kensington DT20 - page 13

    E-13 Pa rt Names and Functions o ZOOM Buttons !0 MENU Button !1 SCROLL Button * Once a menu or an adjustment is displa yed, their displa y automatically disappears, and adjustment values are stored to memory if buttons are not operated f or about 30 seconds. *F or details of menu adjustment, see page E-43 onwards . • These buttons adjust the z oo ...

  • Kensington DT20 - page 14

    E-14 ■ Buttons and Indicator Lights SET OHP STORED IMAGE VOLUME FREEZE REFRESH RESIZE LIVE IMAGE POSITION ROTATION POINTER V H !7 !2 !3 !4 !5 !6 Name !2 RESIZE Button !3 POSITION Buttons !4 LIVE IMAGE Button !5 SET/POINTER Button !6 OHP ST ORED IMA GE/ V OLUME Buttons !7 REFRESH/FREEZE Button Description • Press to change the size of the projec ...

  • Kensington DT20 - page 15

    E-15 Pa rt Names and Functions Remote Contr oller MENU ZOOM RESIZE OHP BRIGHTNESS PC1/PC2 VOLUME VIDEO OHP STORED IMAGE RO TAT I O N POSITION V H P in P LIVE IMAGE KEYSTONE FREEZE POINTER/ SET POWER POINTER TYPE REFRESH MUTE q t !1 !2 !7 !3 y u w i o !0 r e , !4 !5 !6 Name q POWER Button w POINTER TYPE Button e POINTER/SET Button r SCROLL Button t ...

  • Kensington DT20 - page 16

    E-16 !1 ZOOM Buttons !2 POSITION Buttons !3 BRIGHTNESS Buttons !4 V OLUME Buttons !5 OHP ST ORED IMA GE Buttons !6 KEYST ONE Button !7 LIVE IMAGE Button • These buttons adjust the z oom ratio . Pressing the b utton reduces the image , and pressing the button enlarges the image. • Press to change the orientation of the projected image when OHP i ...

  • Kensington DT20 - page 17

    E-17 Pa rt Names and Functions ■ Remote Contr ol Operations • Use the remote control within about se ven meters (7.7 y ards) from the remote control sensors (on the front and rear sides) of the projector and within 10 degrees to the left and right. This distance ma y become shor ter as the batter y wears do wn. • The remote controller does no ...

  • Kensington DT20 - page 18

    E-18 Ho w to Install the Pr ojector ■ Installation Sequence ■ Adjusting the Tilt The position and tilt angle of the projected image can be adjusted by adjusting the adjustable feet. Press both the left and right tilt adjustment levers to lift the main unit, and release them when the desired height is reached. Y ou can fine-adjust the tilt by tu ...

  • Kensington DT20 - page 19

    E-19 How to Install the Pr ojector ■ Pr ojection Distance and Pr ojected Image Size Use the following diagrams to determine the projected image size and the type of screen required for any given projector location. • The projection distance that provides good f ocusing is 1.4 m (1.5 yd) to 13.9 m (15.2 yd) from the front of the lens. Install th ...

  • Kensington DT20 - page 20

    E-20 ■ T ypical Installation 1. Select the installation site Place the projector on an even and stable surface such as a table. 2. Connect the power cor d (supplied), and press the POWER button (or POWER button.) 3. T urn the direction of the lens so that it is perpendicular to the screen. Tu rn the unit to the left or right so that the top and b ...

  • Kensington DT20 - page 21

    E-21 How to Install the Pr ojector ■ Compensating K eystone If the projected image is distorted, you can eliminate the distortion by doing keystone compensation. ● How to Compensate Keystone Press the KEYSTONE button (or the KEYSTONE button on the remote controller) to display the “Keystone menu.” Press the u b utton to make the top of the ...

  • Kensington DT20 - page 22

    E-22 Connecting to a P ersonal Computer CAUTION Cautions on Connection • Bef ore connecting other de vices, turn off each device to protect the projector and other connected de vices. •F or details of how to connect and use de vices connected to the projector , refer to the User’ s Manual for each device. • Sometimes images are not displaye ...

  • Kensington DT20 - page 23

    E-23 Connecting to a Per sonal Computer About the PC Input and Output The 15-pin mini D-Sub connectors are used f or the PC input and output terminals. The f ollowing sho ws the relationship between the pins and the input and output signals . q RED VIDEO y GND !1 NC w GREEN VIDEO u GND !2 Pull up (+5V) e BLUE VIDEO i GND !3 H.SYNC r GND o NC !4 V . ...

  • Kensington DT20 - page 24

    E-24 ● Images are not projected correctly even though they are displayed normally on the notebook PC screen 1 V erify the functions of the notebook PC. Even if the LCD screen of a notebook PC displays normal images, the projected images may be displa yed incorrectly . In most cases , because of the limitations of the notebook PC, the simultaneous ...

  • Kensington DT20 - page 25

    E-25 Connecting to a Per sonal Computer Signal Name Resolution Horizontal Frequency Ve r tical F requency Compatibility (Horizontal ✕ Ve r tical) (kHz) (Hz) NTSC RGB - - 15.7 60 ✕ P AL/SECAM RGB - - 15.6 50 ✕ VGA-GR1 640 480 31.5 60 ● VGA-GR2* 640 400 31.5 70 ● VGA-GR3* 640 350 31.5 70 ● VGA-TX1* 720 400 31.5 70 ● VGA-TX2* 720 350 31. ...

  • Kensington DT20 - page 26

    E-26 ● Basic connections NOTE • The personal computer has input terminals for both image and sound for “1” and “2”. Hook up the sound and image to the corresponding terminals. If they are not hooked up to the corresponding terminals, the image and sound will not be output correctly . • See page E-11 f or information about the input an ...

  • Kensington DT20 - page 27

    E-27 Connecting to a Per sonal Computer ● Connecting to an IBM Desktop and Compatible NOTE When connecting the projector directly to the PC without using the monitor supplied with the PC, you can connect by the supplied cable only . ● Connecting to Apple Macintosh Notebook Excluding Power Book Duo, 100, 140, 145B, 150, 170 NOTE • When connect ...

  • Kensington DT20 - page 28

    E-28 ■ Connecting to a Video Source or D VD Player Images from a video source or DVD player can be projected on a large screen. NOTE • When both VIDEO and S-VIDEO are connected, S-VIDEO is given higher displa y priority . • Bef ore using the video source or D VD play er , close the materials cov er . (Otherwise, the glass on the scanner ma y ...

  • Kensington DT20 - page 29

    E-29 Basic Operation Basic Operation ■ Preparation 1 Connect the power cord. The projector is in the standby mode, and the power indicator LED lights (red). Press the POWER b utton. The fan spins, the LED lights , and the ON/ST ANDBY LED lights (green). The LAMP/COVER LED lights (green). If the LAMP/COVER LED lights red after turning on the PO WE ...

  • Kensington DT20 - page 30

    E-30 ■ Basic Operations in the OHP Mode NOTE The projected image in the OHP display (projection of actual object) may be slightly distorted as a very wide- angle lens is used. 1 Adjust the size of the projected image. Rotate the zoom adjuster on the projection lens to adjust the size of the projected image. 2 Adjust the focus. Adjust the focus ad ...

  • Kensington DT20 - page 31

    E-31 Basic Operation 5 Set the object y ou want to project. Open the materials cover , and place the document or printed matter you want to project on the scanner . A video image of the projected material appears in the window . Close the materials cov er . NOTE Objects can be projected ev en if the mater ials cov er is not closed. Howe ver , unwan ...

  • Kensington DT20 - page 32

    E-32 8 Freeze the projected image. Press the REFRESH/FREEZE button to project a frozen image, of the material that you set in step five, on the white area of the projected image. 9 Close the window . Press the LIVE IMA GE button to close the windo w that is display ed, the entire projected image freez es. 10 Adjust the zoom ratio. Y ou can adjust t ...

  • Kensington DT20 - page 33

    E-33 Basic Operation 12 Project a full-screen ima ge . When projecting a vertical image, press the RESIZE button to switch between a projected image that fills the screen from side to side or to one that fills the screen from top to bottom. (Y ou can s witch them ev en when adjusting the zoom.) 13 Make the projected image live. There are the two fo ...

  • Kensington DT20 - page 34

    E-34 15 Displa y the pointer . Press the SET/POINTER button to displa y the pointer . Press it again to hide the pointer . Press the SCROLL b utton to mov e the pointer . NOTE Adjusting the zoom or the brightness while the pointer is displa yed ma y cause it to disappear momentar ily , but it will reappear after a shor t time . 16 Select the type o ...

  • Kensington DT20 - page 35

    E-35 Basic Operation Document Orientation and Scan Size Place the document or printed matter face down at the orientation sho wn in the figure below . The maximum size that documents or printed matter can be scanned is 216 mm/8.5 in (verti cal) and 288 mm/11.3 in (horizontal). For this reason, the projected sizes are as f ollows when an A4-size she ...

  • Kensington DT20 - page 36

    E-36 Displa ying OHP stored image Pressing the OHP STORED IMAGE VOLUME buttons displa y and switch the stored images in the internal memor y . VOLUME OHP STORED IMAGE b utton: Displa ys the image pre vious to the stored image that is currently displa yed. VOLUME OHP STORED IMAGE b utton: Displa ys the image f ollowing the stored image that is curre ...

  • Kensington DT20 - page 37

    E-37 Basic Operation ■ Basic Operation of PC or Video Input 1 Adjust the size of the projected image. Rotate the zoom adjuster on the projection lens to adjust the size of the projected image. 2 Adjust the focus. Adjust the focus adjuster on the projection lens until the projected image is sharp. 3 Compensate keystone. See “Compensating K e yst ...

  • Kensington DT20 - page 38

    E-38 5 Adjust the zoom ratio. Y ou can adjust the zoom between 1x to 4x. Pressing the ZOOM button (or the b utton on the remote controller) reduces the image, and pressing the ZOOM button (or the button on the remote controller) enlarges the image . 6 Move the zooming position. Press the arrow buttons on the remote controller to move the z ooming p ...

  • Kensington DT20 - page 39

    E-39 Basic Operation 9 Select the type of pointer . Y ou can switch the type of pointer with the POINTER TYPE b utton on the remote controller . (Select from , , or .) Y ou can also select the type from “P ointer type” on the “Setting 2” menu. See page E-45 for details . 10 Adjust the v olume. Press the VOLUME OHP STORED IMAGE b utton to re ...

  • Kensington DT20 - page 40

    E-40 12 Display images fr om the personal computer and the video at the same time. If you select personal computer input while a video source and a personal computer are both connected, you can displa y video images in the window at the low er right side of the projected image. Set “Picture in Picture” to “ON” on the quick men u to display ...

  • Kensington DT20 - page 41

    E-41 Basic Operation ■ How to Quit 1 T urn the lamp off. Press the POWER button. (Hold down for at least one second.) “Press POWER b utton again to turn off. ” is displa y ed on the projected image. Press the POWER b utton again. The LAMP/COVER LED blinks green, and then goes out after about one minute. The ON/ST ANDBY LED lights (red.) NOTE ...

  • Kensington DT20 - page 42

    E-42 ■ P erforming V arious Adjustments Menu Structure Y ou can perf or m various adjustments and make v ar ious settings b y operating the b uttons with the menu display displayed on the projected image. There are two menus, the “Quick menu” on which there are frequently used items, and the “Main menu” on which more detailed settings can ...

  • Kensington DT20 - page 43

    E-43 Basic Operation Description of Menu Items The following describes each of the menu displays, and the items and functions that can be set in these menu displays. For details of how to set these menu items, see “Basic Opera tion” on page E-47. ◆ Image Adjustment (when PC input is selected) <Image Adjustment Menu> ◆ Image Adjustment ...

  • Kensington DT20 - page 44

    E-44 ◆ Image Adjustment (when OHP is selected) <Image Adjustment Menu> ◆ Sync Adjustment (onl y when PC input is selected) <Sync Adjustment Menu> NOTE Menu items sometimes cannot be adjusted within the range -100 to +100 depending on the PC input signal. Menu Item Red Blue Image mode Gamma Setting Item -100 ~ +100 -100 ~ +100 Standa ...

  • Kensington DT20 - page 45

    E-45 Basic Operation ◆ Setting 1 <Setting 1 Menu> NOTE In the “Setting 1” menu, the currently set input signals and lamp usage time can be displayed for confirmation. ◆ Setting 2 <Setting 2 Menu> Menu Item A uto po wer off Start-up display Economy mode Setting Item ON/OFF ON/OFF ON/OFF Description Sets the auto power off functio ...

  • Kensington DT20 - page 46

    E-46 ◆ Language Selection <Language Selection Menu> ◆ Projection Mode <Projection Mode Menu> ◆ Video Select (only when video source input is selected) <Video Select Menu> Menu Item Language selection Description Sets the language used in display . Menu Item Projection mode Setting Item Front Rear Description Adjusts the proj ...

  • Kensington DT20 - page 47

    E-47 Basic Operation ■ Basic Operation The f ollowing describes basic operations in the f ollo wing menus: “Image Adjustment”, “Sync Adjustment”, “Setting”, “Language Selection”, “Video Adjustment”, and “Projection Mode” . 1 Press the MENU b utton (or the MENU button on the remote controller). The main menu is displayed. & ...

  • Kensington DT20 - page 48

    E-48 Main Unit Operation Remote Control Operation 4 -1 Press the buttons to select the item you want to set. <Example: When “A uto power off ” is selected> When selecting “ON” or “OFF”. Menu items that require selection of “ON” or “OFF” are “A uto power off ”, “Star t up displa y”, and “Economy mode”. F or deta ...

  • Kensington DT20 - page 49

    E-49 Basic Operation Main Unit Operation Remote Control Operation MENU ZOOM RESIZE OHP BRIGHTNESS PC1/PC2 VOLUME VIDEO OHP STORED IMA GE RO TAT I O N POSITION V H P in P LIVE IMAGE KEYSTONE FREEZE POINTER/ SET POWER POINTER TYPE REFRESH MUTE 4 -1 SCROLL MENU SET RESIZE POINTER 4 -1 4 -2 4 -2 Press the buttons to select “ON” or “OFF”. Standa ...

  • Kensington DT20 - page 50

    E-50 Main Unit Operation Remote Control Operation MENU ZOOM RESIZE OHP BRIGHTNESS PC1/PC2 VOLUME VIDEO OHP STORED IMA GE RO TAT I O N POSITION V H P in P LIVE IMAGE KEYSTONE FREEZE POINTER/ SET POWER POINTER TYPE REFRESH MUTE 4 -1 , 5 SCROLL MENU SET RESIZE POINTER 4 -2 4 -2 Press the b uttons to adjust the setting. Others Other menu items include ...

  • Kensington DT20 - page 51

    E-51 Basic Operation ■ Quic k Menu The Quick men u has frequently used items. This section describes the items and functions that can be set on the Quick menu. Press the MENU button (or the MENU button on the remote controller) to displa y the quick men u. Description of Menu Items ◆ When OHP Is Selected ◆ When the OHP stored image Is Display ...

  • Kensington DT20 - page 52

    E-52 Maintenance ■ Fault Protection Y our projector is provided with internal protection circuits for pre venting fire and damage to internal components due to abnormal temperature. ● When the LAMP/COVER LED is blinking: ❍ Action 1. Disconnect the po wer plug from the pow er outlet. 2. Correctly install the air filter . For details , see “C ...

  • Kensington DT20 - page 53

    E-53 Maintenance ● When the pow er fails (all LEDs are off when the po wer is turned ON) ❍ Action 1.Disconnect the power plug from the po wer outlet. 2.Check the following and take corrective actions. Use your projector within an ambient temper ature of 0 ° C to 35 ° C (32 ° F to 95 ° F). Is the ambient temperature more than 35 ° C (95 ° ...

  • Kensington DT20 - page 54

    E-54 ■ Lamp Unit Replacement The target replacement time of the lamp used on this projector is 1400 hours. (This may be shortened depending on the conditions of use.) Since there is a high possibility of lamp explosion if the cumulative usage time exceeds more than 1500 hours, the power to the lamp is cut off at 1500 hours.In the f ollowing insta ...

  • Kensington DT20 - page 55

    E-55 Maintenance 2 Loosen the lamp unit retaining scre ws. Loosen the lamp unit screws. (2 pieces) 3 Draw out the lamp unit. Hold the handle and lift the lamp unit upward. 4 Install a new lamp unit. q Hold the lamp unit and push it in. w Make sure that the two positioning protrusions fit properly into the holes. e Tighten the two lamp unit retainin ...

  • Kensington DT20 - page 56

    E-56 ■ Cleaning the Air Filter The air filter is an important part as it keeps the optical components inside your projector free from dir t and dust. A clogged air filter can cause the temperature to rise inside y our projector and the f an speed to increase. This, in turn, ma y reduce lamp life or cause the projector to malfunction. The air filt ...

  • Kensington DT20 - page 57

    E-57 Tr oubleshooting Pag e(s) Tr oubleshooting If you think a prob lem has occurred, check the f ollowing items before asking f or a repair . Symptom Po wer is not on. E-20 The projection lamp does not light. E-54 E-54 E-56 E-52 E-54 No image is display ed. E-29 E-22, 28 E-43 E-24 E-24 The image is distor ted. E-20 E-21 The image is blurred. E-30, ...

  • Kensington DT20 - page 58

    E-58 Specifications Specifications Model Name T ype LCD P anel Size Drive System Number of Pixels Arrangement Projection Lens Optical Source Image Size Color Reproducibility Brightness Scan F requency Maximum Resolution At RGB signal input OHP Scanner PC Signal system (Analog Video signal RGB Input ) Sync Signal Te r minal P anel Video Signal syste ...

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All of them are important, but the most important information from the point of view of use of the device are in the user manual Kensington DT20.

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A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Kensington DT20 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Kensington DT20.

A complete Kensington manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Kensington DT20 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Kensington DT20, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Kensington DT20, that we can find in the current document
3. Tips how to use the basic functions of the device Kensington DT20 - which should help us in our first steps of using Kensington DT20
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Kensington DT20
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Kensington DT20 in a specific country, if it was not possible to solve the problem on our own.

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