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MAINTENANCE

DLV 1280 User's Manual

4-3

be blocked or covered. The projector should never be placed near or over a
radiator or heat register. The projector should not be placed in an enclosure
unless proper ventilation is provided.

Do not push objects of any kind into the projector through the ventilation
openings. They may touch dangerous voltages or short-out components resulting
in a fire or shock hazard. Do not spill liquids of any kind into the projector.
Should an accidental spill occur, immediately unplug the projector and have it
serviced by a qualified service technician.

If any of the following conditions exist, unplug the projector and refer service to
qualified service personnel.

• 

The power cord has been damaged.

• 

The internal cooling fans do not come on when the projector is first turned on.

• 

Liquid has been spilled into the projector.

• 

The projector has been exposed to excessive moisture.

• 

The projector does not operate normally.

• 

The projector has been dropped or the case has been damaged.

• 

Projector performance has deteriorated.

Do not attempt to service the projector yourself. All servicing must be performed
by a qualified Electrohome service technician. If replacement parts are required,
it is important that only Electrohome-approved parts are used. Other parts may
result in fire, electric shock or risk of personal injury.

Clean the projector when required. Always unplug the projector before cleaning.

To avoid the risk of scratching the lens, clean the lens only if absolutely
required—keep in mind that a small amount of dust on the lens will have very
little effect on picture quality. If you must clean the lens, use a DRY soft cotton
cloth. Dust gently in a circular motion.

It is important to never touch the sapphire (glass) surface of the lamp, as the oil
imprint will seriously degrade lamp performance. Should you accidentally touch
the surface of the lamp, clean gently with a lint-free cloth moistened with
isopropyl alcohol.

Clean the case with a soft dampened cloth. Use a mild commercial cleaner. Do
not use liquid or aerosol cleaners.

The standard IR Remote Keypad uses four AA size, 1.5V alkaline batteries. To
install new batteries, open the battery compartment at the back side of the
keypad by pulling on the raised portion of the cover as shown (Figure 4-1).

Servicing

'

4.2

Cleaning

Lens

'

Lamp

'

Case

'

4.3

Replacing

Keypad

Batteries

Summary of Contents for DLV 1280

Page 1: ...Using the Keypads 3 3 3 4 Navigating the Menus 3 10 3 5 Working With Sources and Channels 3 14 3 6 Adjusting the Image 3 19 3 7 Adjusting and Checking System Parameters 3 24 3 8 Using Multiple Projec...

Page 2: ...e an optional decoder Diagonal screen size up to 30 feet Set up and adjust images directly or through menus Memory for up to 99 different channels or source setups Active data loop through capability...

Page 3: ...luded Internal speakers not included IR remote keypad 1 per installation Warranty card NOTE The overseas export DLV 1280 and the DLV 1280 CR do not include video or audio functions This manual assumes...

Page 4: ...Projector Position and Mounting CHECK LEVEL Rotate the feet until the projector is level See 2 7 Leveling Connect a Source Locate the input panel at the rear of the projector Connect RGB inputs such...

Page 5: ...r the screen Also ensure that the projector is perpendicular to the screen See 2 8 Zoom Focus and Offset and Figure 2 10 CHECK HORIZONTAL OFFSET To mechanically place your image slightly left or right...

Page 6: ...er Rear Screen Floor Mount with Mirror ADVANTAGES CONSIDERATIONS Projector is completely hidden Usually good ambient light rejection Requires less space behind screen than other rear screen installati...

Page 7: ...g on curved screens as well Focus remains sharp however there may be significant pincushion distortion primarily at the top of the screen Rear Screen Installations There are two basic types of rear sc...

Page 8: ...80 x 1024 sources is 5 4 Using a 5 4 Screen If you use a mix of sources i e those with the rectangular 4 3 aspect ratio as well as those with the slightly more square 5 4 aspect ratio a 5 4 screen wil...

Page 9: ...and reflections to a minimum If it is not possible to eliminate fluorescent lights consider using parabolic reflectors egg crates to direct light down to the floor Incandescent spot lighting is a bet...

Page 10: ...speakers power amplifiers elevators etc For rear screen applications less space is required if a mirror is used to fold the optical path Choose the right screen size for the application As screen siz...

Page 11: ...ndicular to the screen and projector not necessarily parallel to floor As the distance between the projector and the screen increases image size also increases Throw distance is roughly equal to the h...

Page 12: ...ype of lens you are using the image can also be offset up or down by turning the vertical offset adjustment knob on the top edge of the projector The number of pixels by which you can raise or lower a...

Page 13: ...cart avoid sudden stops excessive force and uneven surfaces that may cause the projector and cart combination to overturn The table or cart should be reasonably level but fine adjustments to the proj...

Page 14: ...on green for data composite and separate H V If desired loop the signal out through the DAT OUT port to a second destination such as a monitor or another projector DAT 2 A standard RGB input with a V...

Page 15: ...Then connect the red green and blue source outputs to the RED GREEN and BLUE inputs on the panel If the source uses sync on green you only need to connect the red green and blue If your source provide...

Page 16: ...e Figure 2 15 Figure 2 15 Connecting a Composite Video Source VID 1 AUDIO To control audio levels in an audio visual system connect pre amplified line level audio inputs to the left and right audio in...

Page 17: ...ously See Figure 2 17 Figure 2 17 Connecting an S Video Source VID 2 AUDIO To control audio levels in an audio visual system connect pre amplified line level audio inputs to the left and right audio i...

Page 18: ...u See 3 6 Adjusting the Image YCrCb AUDIO Connect pre amplified line level audio inputs to the left and right audio inputs labeled VID 1or DAT 1 depending on where your video input is connected see Fi...

Page 19: ...ect from Front Rear Inverted Front or Inverted Rear according to your intended installation See Figure 2 21 For most installations you will want to make sure that the projector is level from side to s...

Page 20: ...to the left or right of center Depending on the lens present turning the Vertical Offset adjustment knob can raise or lower the image without causing keystone distortion Turn the knob until you achiev...

Page 21: ...ed RS 232 IN Figure 2 24 Then set the baud rate to match that of the computer Changing the baud rate is described in 3 7 Adjusting and Checking System Parameters Figure 2 24 RS 232 Serial Port Connect...

Page 22: ...for the controlling device See 3 7 Adjusting and Checking System Parameters if you need help changing the projector baud rate from its default of 38400 Figure 2 27 Three Networked or Chained Projecto...

Page 23: ...that of a keypad by setting the desired option in the Preferences menu use Front IR Rear IR or Wired Keypad depending on which you want to change See 3 7 Adjusting and Checking System Parameters for f...

Page 24: ...latch and open the battery compartment on the back of the keypad as shown in Figure 2 29 Make sure the batteries are in place IR keypad only NOTE The optional wired keypad appears as shown but there i...

Page 25: ...6 Replace battery compartment cover Plug into projector wired keypad only and test NOTE Although they are similar a wired keypad cannot be converted into an IR remote keypad nor vice versa SHORTCUT ME...

Page 26: ...ng the projector and adjusting it for use at that location If you have not yet installed the projector refer to Section 2 Installation and Setup 2 This manual assumes all audio video options are insta...

Page 27: ...osition of the image in relation to the projector lens See Section 2 Installation and Setup for details Accepts Composite video or S Video signals from devices such as VCRs Accepts RGB and sync signal...

Page 28: ...a wired remote keypad for alternative method of remote control Use any of three different keypads to control DLV 1280 The Built in Keypad the IR infrared Remote or the Wired Remote Keypad optional Eac...

Page 29: ...nel of the projector Note that on this keypad each number key also has a second label indicating a specific function SRC or VID 2 e g These second labels apply only in presentation level i e when ther...

Page 30: ...less communications from a battery powered infrared IR transmitter Use the keypad the same way you would use a remote keypad supplied with a television or VCR When making key presses point the keypad...

Page 31: ...another action such as during power up the key press may not take effect When you turn on the projector it begins operating at presentation level which displays the image from the existing source sig...

Page 32: ...ences menu you have chosen for the key You can choose to enter the switcher and slot number for a source location when you press this is the default or you may prefer to see a scrollable list of chann...

Page 33: ...e having a scroll bar Minus or Left Arrow There are various uses for these keys depending on the situation or to decrease a slidebar value or to change an on off option to off in short menus or to scr...

Page 34: ...to begin increasing or decreasing the amount of perceived light in the image so that black just changes to very dark gray See 3 6 Adjusting the Image Image Settings subsection NOTE Remote keypads onl...

Page 35: ...ource on or off A small MUTE message will appear until you cancel press or If a menu is visible press or on the built in keypad to hide it You can continue adjustments as usual with the arrow keys whi...

Page 36: ...ion Then press to select it Or simply press the appropriate number key for quicker access to any numbered menu item If a menu is longer than a single page indicated by the presence of a scroll bar on...

Page 37: ...access General Help topics Press to return to presentation level Within most function menus you can change various settings through slidebars on off toggles and pull down lists Highlight the menu ite...

Page 38: ...Press to move down in the list then press to save Press to move up in the list then press to save Press a key corresponding to a numbered option Press to cancel escape Original setting remains NOTE P...

Page 39: ...y 5 seconds Other 15 minutes NOTE See Section 2 Installation and Setup for a complete explanation of how to connect the various types of sources to the projector Once you connect a source to the proje...

Page 40: ...e are collectively stored in the projector s memory as a unique source setup called a channel DLV 1280 can store and automatically recall up to 99 channels so that you do not have to repeatedly re con...

Page 41: ...that this channel will be included in the channel selection menu also known as the channel list available from the key NOTE By default a channel will have an m here thus the channel will appear in th...

Page 42: ...nel will appear in the Channel Setup menu the next time you are in it and will be assigned the lower available channel number Deleting Multiple Channels In the Channel Setup menu highlight the Delete...

Page 43: ...ce Press to delete a character or number Press to accept all when done Press to cancel escape Original text remains Remember to press after each character or digit you want You can enter numbers direc...

Page 44: ...ul if you specifically wish to re define a channel according to default values or if you want to change the source for a channel A message of reading New Values appears on screen during an update Vari...

Page 45: ...lor saturation level For example setting Color to 0 produces a black and white image If Color is set too high the color levels in the picture will be over powering and unrealistic Use or until the des...

Page 46: ...emp COLOR TEMPERATURE expressed in degrees Kelvin adjusts coloration reddish or bluish of the whites displayed the lower the temperature the more reddish the whites Use or as desired for the current c...

Page 47: ...your image shows shimmer If shimmer is in vertical bands adjust tracking first For best results adjust pixel phase from within a smooth gray test pattern made up of a clear pattern of tiny black and w...

Page 48: ...V size have the following meanings 1000 1 1 size 2000 2 1 size 3000 3 1 size Top Blank TOP BLANK blanks out the top edge of an image turns it to black You can use this option in combination with vert...

Page 49: ...s Baud Rate The baud rate setting determines the speed of RS 232 communications important if you are controlling the projector with an external device such as a computer or another projector via an RS...

Page 50: ...urce Error Msgs Choose in what way you want to be notified of errors detected in either the incoming signal or projector Select Screen or All if you want a brief message displayed If you prefer to be...

Page 51: ...e both IR sensors you cannot use the IR remote keypad to select the second Off setting This safeguard prevents accidentally disabling the IR keypad while you are using it Instead use either the built...

Page 52: ...s DLV 1280 keypads and VistaPro keypads are interchangeable and are set to Protocol A at manufacture Please see 2 10 Keypad Protocols 2 The Electrohome keypads used with the Marquee projector are not...

Page 53: ...ry Once installed you can set different options for the lamp such as its intensity and expected life span These setups can be changed at any time during the life of the lamp NOTE See 4 4 Replacing the...

Page 54: ...nly Set which LAMP MODE you want to use in order to control the light output and or life span of the lamp The higher the light output or power setting the shorter the life span of the lamp Use the lam...

Page 55: ...ector will automatically increase the power supplied to the lamp as needed to maintain the chosen intensity to within 10 of the setting This is called brightness tracking Keep in mind that once the la...

Page 56: ...rols if you need help entering the number Once entered the new lamp serial number will be added to the Lamp History menu and the Lamp Hours timer will reset to 0 Lamp Mode and Lamp Limit remain as the...

Page 57: ...and blue flicker 6 Press when each of the three colors are as stable as possible You will find that all three flicker values should range from approximately 230 330 or from approximately 1700 2100 de...

Page 58: ...to which the keypad is connected has its Broadcast Keys option set to On and the Wired Keypad enabled The remaining projectors must have their Broadcast Keys option off and keypads disabled When your...

Page 59: ...sages appear only if the Error Msgs in the Preferences menu is set to Screen or All No Signal The message No signal appears when there is no signal on the selected input Both HSYNC and VSYNC are inact...

Page 60: ...low and red light while the Power LED glows a continuous red you have encountered a possible system error requiring the attention of a qualified service technician see System Warnings and System Error...

Page 61: ...ccompanying the projector The lightning flash and arrowhead symbol within the equilateral triangle alerts the user to non insulated dangerous voltage within the projector s enclosure that may be of su...

Page 62: ...acing the Filters for the complete filter replacement procedure WARNING Only use filters supplied by Electrohome Operate the projector at the specified voltage only Do not overload power outlets and e...

Page 63: ...ojector yourself All servicing must be performed by a qualified Electrohome service technician If replacement parts are required it is important that only Electrohome approved parts are used Other par...

Page 64: ...Service Lamp menu Lamp Hrs indicates the total number of hours the lamp has been used NOTE As the lamp nears its Lamp Limit as set in Service Lamp a lamp timer message may appear on screen to warn tha...

Page 65: ...r the flexible U V Light Shield and are accessible through holes in the bracket beneath the shield Puncture cut the U V shield as necessary unscrew all 4 screws and carefully lift the lamp assembly st...

Page 66: ...Replace projector lid Replace the projector lid and secure with the four corner screws Power up the projector Plug the projector in and press to turn it on Allow the projector to warm up for about fiv...

Page 67: ...o the atmosphere You can now dispose of the lamp module with regular waste Note that the integral lamp timer contains a small amount of mercury This mercury must be treated as hazardous waste if disca...

Page 68: ...to remove Insert the new side filter between the brackets making sure that the tabbed side faces out Slide all the way down Replace Top Filter The top filter is installed horizontally near the center...

Page 69: ...that the tabbed edge side is up and towards the rear of the projector Slide all the way under the funnel like duct when properly installed about an eighth inch of the filter tab edge will be visible a...

Page 70: ...e the projector lid Loosen the four screws located in the corners of the projector lid Lift the lid off the projector and set aside Loosen the lens mount and remove the lens Locate the lens mount behi...

Page 71: ...turn on when is pressed 1 Make sure that is held down for at least a second or two 2 Are both LEDs OFF on at the back of the projector Check that the power cord is properly connected at the both the w...

Page 72: ...ypad operation Determine if such conditions exist and correct 5 The IR keypad may have been disabled for use with this projector s See 2 10 Keypad Protocols and 3 7 Adjusting and Checking System Param...

Page 73: ...ur when the source is a VCR or video signal If you are using a VCR turn the VCR option to On within the Image Settings menu Portions of the display are cut off or wrap to the opposite edge 1 Horizonta...

Page 74: ...not rectangular 1 Are the vertical and horizontal offsets adjusted correctly for the current throw distance Use the offset knobs on the top of the projector and see 2 8 Zoom Focus and Offset for more...

Page 75: ...er of possible grays 256 Color Temperature Range of Adjustment 3200 K to 9999 K Projection Lenses Lenses Throw ratio 2 1 3 1 zoom 1 2 1 1 5 1 3 1 zoom 3 1 7 1 zoom Screen Size diagonal 2 3 30 4 10 4 3...

Page 76: ...l S Video Luminance Y 1 0 Vp p 3db including sync tip Input level S Video Chrominance C 630 mVp p nominal burst DC offset 3 5V Impedance 75 ohms Sync Input levels with VCM version 27071 01 with VCM ve...

Page 77: ...36 kHz Backlight LED array Battery type Alkaline cells AA 4 Battery life 1 year shelf 1 month continuous use Size W x L x H 26 x 27 x 13 66cm x 68 6cm x 33cm Product weight no lens 70 lb 32 kg Shippin...

Page 78: ...uded not included Audio functions not included not included Internal speakers not included IR remote keypad 1 per installation Warranty card Alternate Throw Lenses see page 5 1 Marquee Signal Switcher...

Page 79: ...m their origin The DLV 1280 default baud rate of 38400 can be changed to match a controlling device The time inside one scan line during which video is not generated The blanking time of the input sig...

Page 80: ...a A device in the North American DLV 1280 that converts NTSC 3 58 NTSC 4 4 PAL PAL N PAL M or SECAM to RGB video The sharpness of a display from a video source adjustable on some types of projectors A...

Page 81: ...asing the horizontal line rate If the resulting frame rate is too low the image may flicker depending on the image content A small push button device which allows the user to control projector setting...

Page 82: ...error message For example if a help page is displayed the projector is not at presentation level The distance between the projector s front feet and the screen Also called Throw Distance The type of c...

Page 83: ...raphical display of an adjustable setting The numerical setting usually represents a percentage The device such as a computer or VCR connected to the projector for display A source is identified by th...

Page 84: ...DLV 1280 can automatically recognize the standard required for a source and display accordingly Screens do not reflect equally in all directions Most light is reflected in a conical volume centered ar...

Page 85: ...Appendix B Keypad Reference DLV 1280 User s Manual B 1 Figure B 1 IR Remote Keypad or Wired Keypad Remotes are optional on DLV 1280 CR...

Page 86: ...KEYPAD REFERENCE B 2 DLV 1280 User s Manual Figure B 2 Built in Keypad...

Page 87: ...Appendix C Menu Tree DLV 1280 User s Manual C 1...

Page 88: ...ial Communication Cables DLV 1280 User s Manual D 1 Refer to the following RS 232 serial communication cable details when connecting DLV 1280 to a computer another DLV 1280 projector or to a Marquee S...

Page 89: ...SERIAL COMMUNICATION CABLES D 2 DLV 1280 User s Manual...

Page 90: ...ed with a keypad Switcher inputs can also be selected by pressing the appropriate front panel push button Features can be used with DLV 1280 and other projectors simple push button control easy to see...

Page 91: ...e horizontal and vertical sync BNC connectors for RGB signal inputs Buffered signals to a remote destination RCA connectors for left and right channel audio inputs The RGB400 Active Loop Through Input...

Page 92: ...280 includes a multistandard decoder optional on overseas export model The HDTV Input Module may be installed in a Marquee signal switcher or Marquee Case Power Supply and used with DLV 1280 The modul...

Page 93: ...uee Case Power Supply enables you to use an input module as a stand alone interface that can be connected to a projector Two modules are available one for use with 120 volt line voltage 38 801023 XX a...

Page 94: ...3 19 Channels vs Sources 3 25 Clamp Tip 3 23 Color Adjusting 3 20 Color Temperature 3 21 5 1 Component YCrCb Video 2 15 Composite Video Connecting Additional 2 13 Connection 2 13 Contrast 3 20 Contras...

Page 95: ...tions 5 3 Timer Message 4 4 Lamp Limit Resetting 3 31 Lamp Modes Intensity 3 29 Max Brt 3 29 Max Life 3 29 Power 3 30 Lamp Replacement Warning 4 1 Lamp Replacement Procedure 4 4 LEDs Status 3 3 3 35 C...

Page 96: ...2 20 3 24 3 32 3 33 5 2 Communication Cables 3 24 Connection 2 17 S Screen Aspect Ratio 2 5 Screen Size 2 5 2 7 2 8 4 14 and Throw Distance 2 5 Screen Type 2 3 Service Requirements 4 3 Size See H Siz...

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