Dukane Model 28a7100hc Users Guide

20
Problem Solution Result
image fuzzy or cropped set your computer’s display resolution to 
the native resolution of the projector 
(Start>Settings>Control 
Panel>Display>Settings tab) 
select 800x600 image clear and not cropped
image not centered on screenmove projector, adjust zoom, adjust height
correct image
A
AA
For a laptop,
disable laptop
monitor
or turn-on dual-
display mode
A
adjust horizontal or 
Picture>Advancedvertical position in 
menu 

21
Problem Solution Result
image not square adjust Keystone on keypadsquare image
image not sharpadjust Sharpness (video sources only) in the 
Picture>Advanced menucorrect image
image does not fit 4:3 or 16:9 screenchange aspect ratio to 4:3 or 16:9 in 
Picture>Aspect ratio menucorrect image
ABAB
AB 

22
Problem Solution Result
image upside down
turn off ceiling in Settings>System menucorrect image
image reversed left to right
turn off rear in Settings>System menu
correct image 
projected colors don’t match sourceadjust color, tint, color temperature, 
brightness, contrast in the menus
correct image
AB
AB
A
AB
COLOR
COLOR 

23
Problem Solution Result
lamp won ’t turn on, LED blinking red make sure vents aren
’t blocked, turn off the 
projector and allow it to cool for a minute  lamp turns on
“ Change lamp ” message appears at startup or lamp 
won ’t turn on and LED blinking red  if lamp hours > 3,000, lamp must be 
replaced (see page 36) lamp turns on
LEDLED
check lamp hours
replace lamp
Main>About  

24
Still need assistance?
I
f y ou  ne ed  assi sta n ce ,  ca ll  Dukane  Custo m er  Serv ic e  di re ctly  at
1 -8 0 0-676-2485 . 
O r,  se nd  u s a n  e -m ail  at
 [email protected] 

25
Using the remote controlThe remote uses two (2) provided AAA batteries. They are easily installed 
by sliding the cover off the remote ’s back, aligning the + and - ends of the 
batteries, sliding them into place, and then replacing the cover.
Caution : When replacing the batteries, be aware that using batteries other 
than the type provided with the projector may risk severe damage to the 
remote. When disposing of the batteries, be sure to do so in an environmen-
tally proper manner.
To operate,...

26
Using the audio To use the projector’s speaker, connect your source to the Audio In connec-
tor on the projector. See page 13 regarding using the audio adapter.
To adjust the volume, press the Vo l u m e buttons on the keypad or remote.
To mute the sound, press the Mute button on the remote. 
Troubleshooting Audio
If you aren’t hearing the audio, check the following:
Make sure the audio cable is connected.
Make sure mute is not active (press the Mute button on the remote). 
Make sure the volume is...

27
Optimizing computer imagesAfter your computer is connected properly and the computer’s image is on 
the screen, you can optimize the image using the onscreen menus. For gen-
eral information on using the menus, see page 29.
Adjust the Keystone, Contrast, or Brightness in the Picture menu 
(page 30). 
Change the Aspect Ratio. Choose the option that best fits your input 
source (page 30).
Adjust the Color Temperature in the Advanced menu (page 32).
Adjust the phase, Tracking, or Horizontal or...

28
Optimizing video imagesAfter your video device is connected properly and the image is on the 
screen, you can optimize the image using the onscreen menus. For general 
information on using the menus, see page 29.
Adjust the Keystone, Contrast, Brightness, Color, or Tint in the Picture 
menu (page 30). 
Change the Aspect Ratio. Choose the option that best fits your input 
source (page 30).
The remote’s Effect button allows you to assign various features to the 
button. The default effect is About,...

29
Using the menusTo open the menus, press the Menu button on the keypad or remote. (The 
menus automatically close after 60 seconds if no buttons are pressed.) The 
Main menu appears. Use the arrow buttons to move up and down to high-
light the desired submenu, then press the Select button. 
To change a menu setting, highlight it, press Select, then use the up and 
down arrow buttons to adjust the value, select an option using radio but-
tons, or turn the feature on or off using check boxes. Press...