Knoll Systems Ht221 Projector User Manual

Storing the most recent “PICTURE ADJ,” “FINE PICTURE,” “H\
 POSITION,” 
AND “V POSITION” settings 
You can store the above present settings in the memory.  CUSTOM 1 to 5. 
1. Select the input source RGB (see page 13). 
2. Press MENU to display the main menu. 
3. Press the cursor up or down key to select “SETTING MENU.” 
4. Press L-CLICK to display the SETTING MENU. 
5. Press the cursor up or down key to select “CUSTOM MEMORY.” 
6. Press the cursor +/- key to select the memory CUSTOM 1 to 5. 
7. Press...

Adjusting the picture elements 
The picture elements such as brightness, contrast, white balance, and so on can be adjusted 
individually for each input source.  The adjustable items vary depending on the input source and 
“INPUT MODE” setting. 
 
(The elements marked with “O” 
are adjustable.) 
VIDEO 
S-VIDEO 
    RGB 
BRIGHTNESS        O        O 
CONTRAST        O        O 
COLOR        O        -- 
TINT        O        -- 
SHARPNESS        O        -- 
WHITE BALANCE        O        O 
 
1. Select the...

The following three types of gamma modes can be selected according to your 
preferences: 
• NORMAL, 
• NATURAL 1, or 
• NATURAL 2. 
8. Press L-CLICK. 
9. Press the cursor up or down key to select “INPUT MODE,” then press the cursor +/- key to 
select the input mode. 
If the input source is VIDEO or S-VIDEO, the following two types can be selected: 
• GRAPHICS for displaying a graphic image, or 
• TEXT for displaying a text image such as the image from the document camera. 
10. Press L-CLICK 
11. Press...

Checking hours of lamp use 
The lamp housing must be replaced after 1000 hours of use. When 1000 hours have elapsed the\
 
STATUS indicator will light in red. Periodically check hours of lamp use in the menu so that you 
will have time to purchase a new lamp housing before the old one is burnt out. 
1. Press MENU to display the main menu. 
2. Press the cursor up or down key to select “POWER MENU.” 
3. Press L-CLICK to display the POWER MENU. 
4. Press the cursor up or down key to select “LAMP USAGE.” to...

Specifications 
 
Optical 
DMD TM Single Chip Digital Micro Device (DMD), 1024x768 dots 
Lens Manual zoom, manual focus F3.0 f =35 to 42mm 
Lamp High Performance compact lamp 150W 
Image Size 635 to 7620mm (25 to 300 inches) diagonal 
Projection Distance 1.2 to 12.3m 
Light Output 1300 ANSI lumens (normally white) 
Contrast Ratio 800:1 
Color Temperature 7000 Kelvin 
 
Electrical 
Inputs Video (NTSC / PAL / SECAM / NTSC4.43)  
RGB (H:15 to 85 kHz, V:50 to 85 Hz) 
Video Bandwidth 60 MHz 
Color...

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Troubleshooting 
This section helps you resolve problems while setting up or using your projector. 
 
Common Problems & Solutions 
Problem Check These Items 
Does not turn on Check that the cord is plugged in. Test the outlet. 
 
Check the status light to see if the projector has 
overheated or the lamp usage exceeds 1100 hours. 
No picture Use the menu icons to select your source (Video, S-
Video, or RGB).  
 
Ensure your source cables are connected properly.  
 
Adjust the brightness and contrast...

When the STATUS indicator on the projector keypad lights or blinks 
 
Status Light Message 
Condition Status 
OFF Normal 
On Continually The projector lamp has exceeded 1000 hours of 
operation and should be replaced. 
Blinking Very Rapidly (On and off in a 
cycle of 1 sec.) 
The lamp housing is not correctly installed.  Install it 
correctly. 
Blinking Rapidly 
(On and off in a cycle of 4 sec.) 
The temperature protector has been triggered.  If the 
room temperature is high, move the projector to a...

Lamp housing replacement procedure 
1. Wait at least one hour for the lamp to cool  
2. Unplug the power cord.   
3. Turn the unit upside down carefully. 
4. Loosen the lamp cover securing screw and remove the 
    lamp cover. 
 
CAUTION: Do not use a lamp housing other than 
the Knoll replacement lamp housing. Order this 
from your Knoll dealer using your projector’s 
model number (see “Note” below). 
 
5. Loosen the three lamp housing securing screws.  (This 
    projector has a safety switch.) 
6....