Dukane Model 28a7100hc Users Guide

							30
Picture menuTo adjust the following settings, highlight the setting, press Select, use the 
up and down arrows to adjust the values, then press Select to confirm the 
changes.
Key s t o n e: adjusts the image vertically and makes a squarer image. You can 
also adjust keystone from the keypad.
Contrast: controls the degree of difference between the lightest and darkest 
parts of the picture and changes the amount of black and white in the 
image.
Brightness: changes the intensity of the image.
Color: adjusts a video image from black and white to fully saturated color. 
The color setting applies to video sources only.
Tint: adjusts the red-green color balance in the image of NTSC video 
images. The tint setting applies to NTSC video sources only.
Aspect Ratio: Aspect ratio is the ratio of the image width to image height. 
TV screens are usually 4:3. HDTV and most DVDs are 16:9. The default is 
4:3. 
Select Native to see the unmodified input with no resizing by the projector.
Select 16:9 to watch enhanced widescreen DVDs. 
For more information regarding Aspect Ratio, see page 11.
Picture menu
increasing keystonedecreasing keystone
Aspect ratio 
						

							31
Presets: Presets are provided that optimize the projector for displaying 
computer presentations, photographs, film images, and video images. Film 
input is material originally captured on a film camera, like a movie; video 
input is material originally captured on a video camera, like a TV show or 
sporting event. You can use the preset as a starting point, then further cus-
tomize the settings for each source. The settings you customize are saved in 
the preset for each source. To restore the factory default settings, choose Fac-
tory Reset in the Settings>Service menu (page 35). 
There is also a user-definable preset. To set a preset for the current source, 
adjust the image, select Save User in the Presets menu, then select Yes. You 
can recall these settings in the future by selecting the User 1 preset. 
Presets
Save
User 
Settings 
						

							32 Advanced menu
Sharpness: (video sources only) changes the clarity of the edges of a video 
image. Select a sharpness setting.
Color Temperature: changes the intensity of the colors. Select a listed rela-
tive warmth value. 
Color Control: allows you to individually adjust the gain for the red, green, 
and blue colors.
Video Standard: when it is set to Auto, the projector attempts to automati-
cally pick the video standard based on the input signal it receives. (The 
video standard options may vary depending on your region of the world.) If 
the projector is unable to detect the correct standard, the colors may not 
look right or the image may appear “torn.” If this happens, manually select 
a video standard by selecting NTSC, PAL, or SECAM from the Video Stan-
dard menu.
Overscan: (video sources only) removes noise around the video image.
The following four (4) options are for computer sources only. 
Phase: adjusts the horizontal phase of a computer source.
Tr a c k i n g: adjusts the vertical scan of a computer source.
Horizontal/Vertical Position: adjusts the position of a computer source.
Advanced menu
Sharpness
Color Temperature
Color ControlVideo Standard 
						

							33
Settings menuAudio: allows adjustments to Volume of the internal speaker. Adjustments 
can also be made from the projector’s keypad and the remote.
Sources: Power-up Source determines which source the projector checks 
first for active video during power-up. When the Autosource feature is On, 
the projector automatically finds the active source, checking the Pow e r- u p  
Source first. The options are Computer 1 for a computer source, and Video 
1 (for S-video connections), and Video 2 (for composite video connections) 
for video sources. When this feature is Off, the projector defaults to the 
source selected in Power-up Source. To display another source, you must 
manually select one by pressing the Computer or Video button on the 
remote or keypad.
System: Rear reverses the image so you can project from behind a translu-
cent screen. Ceiling turns the image upside down for ceiling-mounted pro-
jection. Display Messages displays status messages (such as “Searching” or 
“Mute”) in the lower-left corner of the screen. NND prevents your notebook 
computer from going into Screen Save mode if the USB cable is connected. 
Pow e r  S av e  automatically turns the lamp off after no signals are detected 
for 20 minutes. After an additional 10 minutes with no signal, the projector 
powers down and can be toggled off. If an active signal is received before 
the projector powers down, the image will be displayed. When Power Save 
is enabled, Screen Save is disabled. Screen Save automatically blanks the 
screen with a black color after no signals are detected for a preset number of 
minutes. The image returns when an active source is detected or a remote or 
keypad button is pressed. 
Settings menu
Audio
Power-up
Source Sources
System menu
Screen Save 
						

							34
Startup Logo: allows you to display a blank screen instead of the default 
screen at startup, and when no source is detected. 
Blank Screen: determines what color is displayed when you press the 
Blank button on the remote.
Effect Key: allows you to assign a different function to the Effect button on 
the remote, allowing you to quickly and easily use the effect. Highlight an 
effect and press Select to choose a different one.
Blank: displays an empty screen.
Mute: turns off all sound.
Aspect Ratio: toggles among 4:3, 16:9, and Native (see page 11 and 
page 30). Set as the Effect Key, it can allow you to switch the Aspect 
Ratio for DVDs.
Source: cycles through available sources.
Auto Image: resets the projector to the source (page 26). 
Freeze: pauses the projected image. 
Zoom: allows you to magnify part of the image. Press Effect, then 
press the left mouse button to zoom the image. Use the cursor control 
to pan the image while it is zoomed. Press the right mouse button to 
decrease the magnification. Press the Effect button to cancel zoom and 
return to normal magnification.
About: the default effect. It opens a window with projector and source 
information. 
Startup Logo
Blank ScreenEffect Key 
						

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Language: allows you to select a language for the onscreen display.
Service: To use these features, highlight them and press Select.
Factory Reset: restores all settings to their default.
Lamp Reset: resets the lamp hours used counter in the About menu to 
zero. Do this only after changing the lamp. 
Service Code: only used by authorized service personnel.
About: provides information about the projector and the active source. 
Showing the About box is the default action assigned to the Effect button.
Language menu
Service menu
About menu 
						

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MaintenanceCleaning the Lens1
Apply a non-abrasive camera lens cleaner to a soft, dry cloth.
 Avoid using an excessive amount of cleaner, and don ’t apply the 
cleaner directly to the lens. Abrasive cleaners, solvents or other harsh 
chemicals might scratch the lens.
2
Lightly wipe the cleaning cloth over the lens in a circular motion. If you 
don ’t intend to use the projector immediately, replace the lens cap.
Replacing the Projection LampThe lamp hours used timer in the About menu counts the number of hours 
the lamp has been in use. After 2,980 hours, the message  “Change lamp ” 
appears on the screen at startup. If the maximum lamp time of 3,000 hours 
is exceeded, the lamp will not light. In this case, after replacing the lamp 
you must reset the lamp hours by simultaneously pressing both  Vo l u m e 
buttons on the keypad and holding them for 10 seconds. 
N OTE: Y ou  c a n  order  new  l a m p ho usin gs  f r om  yo ur de ale r. 1
Turn off the projector and unplug the power cord. 
2
Wait 30 minutes to allow the projector to cool thoroughly.
3
Turn the projector on its side so that the lamp door is facing you. Using a 
flat-blade screwdriver, gently pry the lamp door from the projector by 
placing the screwdriver blade into the space between the top of the lamp 
door and the projector.
Lamp hours used
wait 30 minutes
lamp door 
						

							37 4
Loosen the two captive screws that attach the lamp housing to the pro-
jector.
5
Detach the lamp connector from the projector by depressing the locking 
tab on the connector and lightly pulling it free.
WA R N I N G:
To avoid burns, allow the projector to cool for at least 30 minutes 
before you replace the lamp.
Do not drop the lamp housing or touch the glass bulb! The glass 
may shatter and cause injury.
Be extremely careful when removing the lamp housing. In the 
unlikely event that the bulb ruptures, small glass fragments may be 
generated. The lamp housing is designed to contain these frag-
ments, but use caution when removing the lamp housing.
6
Carefully remove the lamp housing. Dispose of the lamp in an environ-
mentally proper manner. 
7
Install the new lamp housing and tighten the screws.
8
Re-attach the lamp connector to the projector. The locking tab should 
engage when the connector is fully plugged in.
9
Replace the lamp door.
10
Plug in the power cord and toggle the Powe r switch to turn the projector 
back on.
11
To reset the lamp hour timer, navigate to the Settings>Service menu 
and select Lamp Reset. See page 35 for details.
lamp 
housing
lamp cable
lamp
connector
lamp
housing
screw screwconnector 
locking tab
lamp cable
Service menu 
						

							38
Cleaning the Lamp Housing ScreensIn dirty or dusty environments, the two dust filter screens in the lamp hous-
ing can become clogged, causing high temperatures and premature lamp 
failure. Routine maintenance to remove dust from the screens lowers the 
lamp operating temperature and prolongs lamp life. To maximize lamp life 
you should clean the screen every 250 hours. 1
Remove the lamp housing. 
2
Examine the dust filter screens on the lamp housing. If necessary, use a 
vacuum cleaner set on low power to clean the screens. Be careful not to 
disturb any internal components when cleaning the screens.
3
Replace the lamp housing and lamp door.
Using the security lockThe projector has a security lock for use with a PC Guardian Cable Lock 
S yste m
lamp housing
lamp two screens 
(one on each
side of the
lamp housing)security
lock 
						

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AppendixSpecificationsTe m p e r a t u r e
Operating 50 to 104
° F (10 to 40
° C) at sea level
50 to 95
° F  (10 to 35
° C) at 10,000 feet
Non-operating -4 to 140
° F (-20 to 60
° C)
Altitude  Operating 0 to 10,000 feet (3,048 meters) 
Non-operating 0 to 20,000 feet (6,096 meters)
Humidity  Operating  10% to 95% relative humidity, non-condensing
Non-operating 10% to 90% relative humidity, non-condensing
Dimensions 12.5 x 9.8 x 4.49
” (318 x 249 x 114 mm)
We i g h t 6.8 lbs. (3.1 kg) unpacked
Optics  Focus Range 4.9 - 32.8 feet (1.5 - 10 m)
Lamp type 150 - W DC SHP lamp
Input Power Requirements  100-120/200-240  3/2A 50/60Hz
Ceiling Mount  UL tested/listed ceiling mount with minimum capacity of 
34 lbs (15.5 kg)
Color-coded Cable Ties, 3 set SP-CABLETIES