Instruction/ maintenance manual of the product DT20 NEC
Go to page of 58
English Deutsch Français Italiano Española Svenska Multi-Function LCD Pr ojector DT20 User’ s Manual.
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 .
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 .
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.
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.
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.
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.
E-8 Contents Pa rt Names and Functions ............................................................ E-9 Projector ................................................................................................................... E-9 Te r minal P anel .
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.
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.
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.
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 VE.
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.
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 IMA.
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 P.
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.
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.
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.
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.
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.
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.
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.
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.
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 .
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.
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 .
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 .
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 .
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).
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.
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 .
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.
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.
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 .
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 .
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).
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”.
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”.
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.
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.
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.
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).
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.
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-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.
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-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.
An important point after buying a device NEC DT20 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought NEC DT20 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data NEC DT20 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, NEC DT20 you will learn all the available features of the product, as well as information on its operation. The information that you get NEC DT20 will certainly help you make a decision on the purchase.
If you already are a holder of NEC DT20, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime NEC DT20.
However, one of the most important roles played by the user manual is to help in solving problems with NEC DT20. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device NEC DT20 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
