Knoll Systems Hdp420 Projector User Manual

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Computer connections 
 
You can connect a computer’s VGA connector to the M1-DA/DVI input on the projector using an 
M1-A cable. 
 
RS-232 connections  
 
You can control the projector from an LCD control panel or computer by connecting an RS-232 
cable to the projector’s Serial control connector.  
 
Displaying an image  
Connect the power cord to the Power connector                plug in power cord 
on the back of the projector and to your electrical outlet. 
 
NOTE: Always use the power cord that shipped with the projector. 
Press the Power button on the remote control.  
 
The LED flashes green and the fans start to run.                     press power button   
 
When the lamp comes on, the start-up screen is displayed  
and the LED is steady green. It can take a minute for the  
image to achieve full brightness. 
 
? No start up screen? Get help on page 13 
 
Plug in, connect, and turn on your video device. 
 
The video device’s image should appear on the   turn on video device   
 
projection screen. If it doesn’t, press the Source button 
on the remote until the image appears. 
 
? No image? Try pressing the Auto Image button on the remote. Get help on 
 page 13. 
 
Adjusting the image 
Adjust the height of the image by tilting the projector  adjust height     
up or down.   
 
 
Position the projector the desired distance from the screen at a 90-degree angle to the screen. 
 
 
See page 8 for a table listing screen sizes and distances to the screen.\
 
 
 
                                                                       A\
djust the zoom and focus. 
                           
         
 
 
If the image is not square, adjust the keystone  adjust  
using the Picture menu. See page 17 for details.          keystone 
 
 
 
 
Adjust the volume on your stereo receiver.  adjust volume  
						

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Your projector has been factory optimized for   adjust Picture menu options 
excellent performance no matter what the source.        including Aspect Ratio    
However, if you wish to make further changes you  
can optimize the image using on screen menus.    
Adjust the Contrast, Brightness, Color, Tint, or Aspect Ratio 
in the Picture menu. See page17 for help with the menus and these 
adjustments. 
 
 
 
For Aspect Ratio, keep in mind that DVD players must be configured for 16:9 in order to view the 
highest quality image. For more information regarding Aspect Ratio, see page 8. 
 
Shutting down the projector 
 
Power Save 
The projector also has a Power Save feature that automatically turns the lamp off after no active 
sources are detected and no user interaction with the projector is performed for 20 minutes. By 
default, this feature is on. See page 21. 
 
Sleep Timer 
The projector also has a sleep timer feature that automatically turns the projector off after four 
hours. See page 21. 
 
Turning off the projector 
Press the Power button on the remote or keypad to turn the projector off. The lamp turns\
 off and 
the LED blinks green for one minute while the fans continue to run to cool the lamp. While the 
LED is blinking green, the projector does not accept any user input. Once the cooling process is 
complete, the LED lights solid green and you can turn the projector back on, if desired. 
 
NOTE: Once the projector has been turned off, you must wait for one minute before turning the 
projector on again. This allows the lamp to properly cool and extend the lamp life up to 3000 
hours). The LED light is solid green when the cooling process is complete. 
 
NOTE: The biggest cause of early lamp failure is not allowing the lamp to cool properly, either 
from power failures or disconnecting power to the projector before the fan can cool the lamp 
properly.  
 
Troubleshooting your setup 
If your image appears correctly on the screen, skip to the next section. If it does not, troubleshoot 
the setup. The LED on top of the projector indicates the state of the projector and can 
help you troubleshoot. 
 
The status indicator on the top of the projector can help you diagnose any problems the projector 
is experiencing. 
 
 
  
 
  
						

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The following tables show common problems. In some cases, more than one possible solution is provided. 
Try the solutions in the order they are presented. When the problem is solved, you can skip the additional 
solutions. 
 
  
 
  
						

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Still need assistance? 
If you need assistance, visit our website at www.knollsystems.com, or call us at 1 800 566 5579. 
during Pacific west coast time. This product is backed by a limited warranty. An extended 
warranty plan may be purchased from your retailer or dealer. 
 
When sending the projector in for repair, we recommend shipping the unit in its original packing 
material, or having a professional packaging company pack the unit. Please insure your shipment 
for its full value. 
 
 
 
 
 
 
 
 
 
 
  
						

							16 
Using the remote control 
The remote uses two provided AA 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.                                     
 
Navigation buttons 
   
To operate, point the remote at the projection screen or at the front of the  
projector (not at the video device or computer). The range of optimum  
operation is up to 30 feet (9.14m).  
      
Press the remote’s Menu button to open the projector’s menu system.  
Use the arrow buttons to navigate, and the Select button to select  
features and adjust values in the menus. See page 17 for more info  
on the menus. 
 
The remote also has: 
• Power button to turn the projector on and off (page 12 for shutdown info) 
• Backlight button to light the remote’s buttons in the dark 
• Source buttons to switch among sources (to assign a particular source  
  to a source button, see page 20) and a source toggle 
• Resize button to change the Aspect Ratio (see page 17) 
• Auto Image button to resynchronize the projector to the source  
• Preset button to select stored settings (see page 18) 
• Overscan button to remove noise at the edge of a video image (page 19). 
• Custom button that can be assigned to a special function, like Blank Screen or Freeze (see 
  page 22) 
• Backlight/Flashlight button on the remote underside. Press this button once to light up the 
  remote, press & hold to turn on the flashlight 
 
Troubleshooting the remote 
• Make sure the batteries are installed properly and are not dead. 
• Make sure you’re pointing the remote at the front of the projector or at the screen, not at the 
video device or the computer, and are within the remote range of 30 feet (9.14m). 
 
Using the keypad buttons 
Most buttons are described in detail 
in other sections, but here is an 
overview of their functions: 
Menu – opens the on-screen menus 
(page17). 
Select – confirms choices made in 
the menus (page17). 
Power–turns the projector on and off.                     menu navigation \
buttons 
Source–changes the active source.                                             
Up/Down arrows–navigates to and adjusts settings in the menus (page 17). 
 
 
Optimizing video images 
Your projector has been factory optimized for very good performance no matter what the source. 
However, if you wish to make further changes you can optimize the image using onscreen 
menus. For general information on using the menus, see page 17.  
 
• Adjust the Keystone, Contrast, Brightness, Color, or Tint in the Picture menu (page 17). 
• Select a Sharpness setting (page 17 ). 
• Use the Color Control to adjust the color gain and offset (page 20\
). 
• Adjust the Color Temperature. Select a listed value (page 20).  
						

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• Turn on Overscan to remove noise on the edges of the video image (\
page 19). 
• Change the Aspect ratio (page18). Aspect ratio is the ratio of the image width to image height. 
TV screens are usually 1.33:1, also known as 4:3. HDTV and most DVDs are 1.78:1, or 16:9 (the 
projector’s default). Choose the option that best fits your input source in the menus, or press the 
Resize button on the remote to cycle through the options. See page16. 
• Select a specific Color Space. See page 20. 
• Select a different Video Standard. Auto tries to determine the standard of the incoming video. 
Select a different standard if necessary. See page 20. 
• Make sure your DVD player is set for a 16:9 television. See your DVD player’s user’s guide for 
instructions. 
 
Customizing the projector 
You can customize the projector for your specific setup and needs. See page 18 to page 21 for 
details on these features. 
• For rear projection, turn rear mode on in the Settings>System menu. 
• For ceiling mounted projection, turn ceiling mode on in the Settings> System menu. 
• Turn the projector’s display messages on and off. 
• Turn on power saving features. 
• Specify blank screen colors and start up logos. 
• Specify the language viewed on the menus.  
• Save the settings for the active source as a preset. 
 
Using the menus 
To 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           Picture Menu    Dots   
to move up and down to highlight the desired  
submenu, then press the Select button.                           
                                                                            \
                                                            
To change a menu setting, highlight it, and press    
Select, then use the up and down arrow buttons to  
adjust the value, select an option using radio  
buttons, or turn the feature on or off using check  
boxes. Press Select to confirm your changes. Use  
the arrows to navigate to another setting. When               
your adjustments are complete, navigate to          Source Info menu 
Previous or Exit, then press Select to go to the       
previous menu; press the Menu button at any time                                                     
to close the menus. 
                                                                        \
           
   
Dots appear before the menu name.  
The number of dots indicate menu’s level,  
ranging from one (the Main menu) 
to four (the most nested menus). 
 
The menus are grouped by usage: 
• The Picture menu provides image adjustments. 
• The Settings menu provides set-up type adjustments that are not changed often. 
• The Source Info menu provides a read-only display of information about the projector and 
   source. 
 
Certain menu items may not be visible or may be grayed depending upon a \
particular source 
being connected. Differences are also seen in analog versus digital video sources and interlaced 
versus progressive sources.  
  
						

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Menu options are grayed out only if the source is selected but no signal is present. For example, 
if the projector is set to a video source but the source, such as a DVD player, is turned off video 
menu options are grayed out. 
 
  
                                                                        \
                                                                                      
Picture Menu                                                                          \
        Increasing keystone 
To 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. 
Keystone: adjusts the image vertically and makes a 
squarer image. Tilt the projector up or down to adjust  
for keystone before using the digital keystone correction 
in the menu. 
 
Contrast: controls the degree of difference between 
the lightest and darkest parts of the picture.       Decreasing keystone 
 
Brightness: changes the intensity of the image. 
 
Color: adjusts a video image from black and white to fully 
saturated color. 
 
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   Aspect ratio 
to image height. TV screens are usually 4:3. HDTV and  
most DVDs are 16:9. The projectors default is 16:9. 
See “Choosing the aspect ratio” on page 8 for more information. 
Select Native to see the unmodified input with no resizing by 
the projector. Select 16:9 to watch enhanced widescreen 
DVDs. Select Letterbox to preserve the 16:9 aspect ratio.  
If you have a 16:9 source and screen, the image fills 
the screen. If your source is letterboxed, the image is 
expanded to fill the screen. Select Natural Wide to  
stretch a 4:3 image to fill the entire 16:9 screen.  
The center two-thirds of the image is unchanged; the edges of the 
image are stretched. 
 
For more information regarding Aspect Ratio, see page 8.     
                       Presets 
 
Presets: This allows you to customize settings and save    
the settings to be restored later. To restore the factory 
default settings, choose Factory Reset in the 
Settings>Service menu. 
 
To set a preset for the current source, adjust                   Save User Settings 
the image, select Save Settings in the Presets menu, 
then choose Save User 1, 2, or 3. You can recall these    
settings in the future by selecting the appropriate 
user presets. All settings in the Picture menu  
(except Keystone) are saved and recalled. 
 
  
						

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Gamma: Gamma tables contain preset intensity 
configurations optimized for the input source. 
You can select a gamma table that has been         Gamma 
specifically tuned for either film, CRT     
(Cathode Ray Tube), Video, PC, or Bright 
Room input. (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.) 
 
White Peaking increases the brightness of whites that are near 100 percent. 
 
 
NOTE: Your viewing preferences may vary. Cycle through the gamma options and pick the one 
you like the best. 
 
Overscan: Removes noise from around the edges of the video image. 
Select zoom to remove the outer 3% of the image and scale the image 
back to its original size. Select crop to remove the outer 3% of the 
image without rescaling. 
 
 
Advanced menu      Advanced menu 
Remember that not all options in the menus are 
available for all sources/ signals. 
 
Iris: Iris adjusts the aperture of the Iris from 0 to 100 
(fully open) to regulate the amount of light emitting from 
the projector. Close the aperture to increase the contrast 
in dark images. 
 
Phase: adjusts the horizontal phase of a computer 
source. 
 
Tracking: adjusts the vertical scan of a computer 
source. 
 
Horizontal/Vertical Position: adjusts the position of a  
computer source. 
 
Sync Threshold Adjust: (progressive signals only). 
If a hardware device, such as a DVD player, is not 
syncing properly with the projector, adjust this 
option to help it to sync when connected to the projector. 
 
Flesh Tone Correction: this modifies colors to make 
the skin complexion better.                                                        \
     Sharpness 
 
Film Mode: controls de-interlacing and is On by default.  
When checked, it assumes the incoming signal is film   
material and optimizes the image accordingly. 
         
Sharpness: (video sources only) changes the clarity       
of the edges of a video image. Select a sharpness setting. 
 
 
  
						

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Color Space: this option applies to computer and   Color space 
component video sources. It allows you to select a 
color space that has been specifically tuned for the 
input signal. When Auto is selected, the projector  
automatically determines the standard. To choose  
a different setting, turn off Auto, then choose RGB  
for computer sources, choose either REC709 or REC601 
for component video sources. 
         Color Temperature 
 
Color Temperature: changes the intensity of the colors.       
Select a value. Native means an uncorrected/unchanged 
color temperature. Other values change the white point 
of the colors. 6500K is generally used for film content 
and 9300K is used for TV video. 
         Color Control 
Color Control: allows you to individually adjust the       
gain and offset of the red, green, and blue colors. 
These advanced controls have the same effect as 
contrast and brightness, but each controls a single color only. 
 
Video Standard: when it is set to Auto, the projector  
attempts to automatically pick the video standard based 
on the input signal it receives. (The video standard options  Video Standard  
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 Standard 
menu. 
 
Overscan: removes noise around the edges of the video   Overscan 
image. Select Zoom to remove the outer 3 percent of the 
image and scale the image back up to its original   
size. Select Crop to remove the outer 3 percent of the  
image without rescaling the image. 
 
Noise Reduction: adjusts signal noise reduction.  
Choose Enable then adjust the level. The software 
determines the differences between successive image 
frames and averages the changes out to reduce the noise.  Noise reduction 
 
 
 
 
 
Settings menu 
Sources: allows programming of source buttons,    Settings 
enables autosource, and enables the SCART RGB   
source. When Autosource is selected, the Source 
Enable feature indicates which sources the projector  
attempts to lock onto. You can use the Source Enable 
feature to eliminate certain sources from this 
search, which will speed the search. By default,  
the check boxes for all sources are checked except 
SCART RGB. Uncheck a source box to eliminate 
it from the search.