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HT221 Users Manual v1.0 Complies with part 15 of the FCC rules. Operation is subject to: 1. This device may not cause harmful interference 2. This device must accept any interference received including interference that may cause undesired operation. WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER, NO USER SERVICEABLE PARTS INSIDE.
• For best results, use your projector in a darkened room. • Place the projector on a flat, level surface in a dry area away from dust and moisture or hang it from the ceiling with an approved mount kit.
Adjusting the picture elements Selecting the picture type Activating the power saving function Activating the on-screen function Turning the projector off with the screen functions Checking hours of lamp use Resetting all to the factory settings Specifications D-Sub pin assignments...
Basic HT221 Information Congratulations On Your Purchase of the HT221 Projector! The HT221 is one of the very best Projectors available today. The HT221 enables you to project precise images up to 300 inches across (measured diagonally) from your PC or Macintosh computer (desktop or notebook), VCR, document camera, laser disc player, DVD player, etc.
• Do not mix new and old or different types of batteries. • There are operations that can only be carried out by remote control. Handle the remote control carefully. Remote control effective range Each side of the projector...
Projector Part Identification Installation The distance from the projector lens to the screen determines to the size of the projected image, therefore, you need to consider the place where you set up the projector and screen before making connections. You also need to consider the screen size and height of the unit and screen as other important factors.
When moving the projector or when it is not in use, cover the lens with the lens cap. • Only use your Projector on a solid flat level surface. If the projector falls to the ground, you can be injured and the projector severely damaged.
• Turn off the components that are to be connected. • The unit and computer will be turned on in "Using the Projector" on page 13. Do not turn on either the computer or unit until you read this section.
• Turn off the components that are to be connected. • The projector and computer will be turned on in "Using the Projector" on page 13. Do not turn on either the computer or unit until you read this section.
PowerBook Connection Depending on the model of your PowerBook, the additional Apple video cable adaptor may be required with the above connection. Modifying the DIP switch (for Macintosh) setting Modify the DIP switch setting on the MAC cable as shown below. Macintosh adapter cable DIP switch setting (o=ON) MONITOR RESOLUTION...
• The projector and computer will be turned on as described in "Using the Projector" on page 13. Do not turn on either the computer or unit until you read this section. • Please also refer to the manual of the computer to be connected.
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The POWER indicator on top of the unit turns to green and start blinking. It will take one minute for the projector to be ready to use. Wait until the indicator stops blinking and lights steadily in green.
Operating with the remote control: Operating with the projector keypad When the projector is turned off, the POWER indicator will start blinking then turn to amber in about one minute. ***Never disconnect the power cable while the POWER indicator is blinking.*** 2) If the POWER indicator is lit in amber, the power cable may be disconnected.
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3. Select your new resolution and click "OK." Notebook computers and resolution standards This Projector is designed to project industry-standardized video such as VESA (Video Electronics Standards Association) or VGA (Video Graphics Array). Notebook computers do not use industry standards. They use whatever timing is necessary to match their local LCD display.
Adjusting the volume of the projector speaker Press VOLUME + to increase the volume or - to decrease. The volume can also be adjusted with the menu operation. Using the laser pointer You can highlight the desired point on the screen with the beamed red light.
Menu operation- Selecting the input source with the projector The menu operation is explained above using the remote control. It can also be controlled with the projector keypad buttons. The remote control and unit button comparison table Remote control buttons...
3. Press L-CLICK to display the SETTING MENU. 4. Press the cursor up or down key to select "PROJECTION." 5. Press the cursor +/- key to select the projection type, which suits the Projector setup conditions. The following four projection types can be selected: a.
Quick starting the projector The projector can be turned on by switching the main power on the unit (see step 1 on page 11). There is no need to press the remote control POWER ON button or the projector POWER button.
Timing Chart Signal Resolution NTSC 640 x 480 768 x 576 SECAM 768 x 576 VESA 640 x 350 640 x 400 640 X 400 VESA 640 X 400 VESA 640 X 480 640 X 480 640 X 480 640 X 480 640 X 480 VESA 640 X 480...
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Adjusting the clock frequency (PICTURE ADJ) and clock phase (FINE PICTURE) manually When "AUTO PICTURE" is set to "ON," the clock frequency and clock phase will be adjusted automatically. However, if you need any manual adjustment for these two items, you first need to set "AUTO PICTURE"...
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“BACKGROUND” setting. See page 19.). 2. Select the right custom memory by restarting Retrieving data from the custom memory above. Selecting the starting mode for the next projector use Set “STARTING RGB” to “LATEST” to use the most recent settings (RGB STANDARD or CUSTOM 1 to 5) when you turn on the unit next.
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.) BRIGHTNESS CONTRAST...
Activating the power saving function This function operates only with an RGB input source. If the input signals from the RGB IN connector go down for more than five minutes, the projector will automatically turn off and enter the standby mode.
If the projector doesn’t turn on because lamp use exceeds 1100 hours. The projector is designed not to turn on after the lamp use has exceeded 1100 hours. (If the unit is in use, it will go off). If this happens you must replace the lamp housing with a new one immediately.
23.5cm (W) x 5.8cm (H) x 29.7cm (D) 9.3 x 2.3 x 11.7" 2.6 kg/5.7 lbs Data projector: 5 degree to 35 degree Celsius (41 degree to 95 degree Fahrenheit), 30 to 85% humidity Remote control: 0 degree to 60 degree Celsius (32 degree to...
Troubleshooting This section helps you resolve problems while setting up or using your projector. Common Problems & Solutions Problem Does not turn on No picture Image isn’t square to the screen Picture is blurred Remote control does not work The STATUS indicator is lit or blinking...
Wait at least one minute before switching it on again. If this does not solve the problem, please contact your dealer. The cooling fan has stopped. Contact your Knoll dealer for service. The lamp is not turned on.
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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).
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