Technology KnowledgeBase
Projectors, Document Cameras, and Other AV Articles
Zoom: Connecting other tools.
Added on Mon, Nov 9, 2020
Connecting other tools to Zoom Read More
Troubleshooting: Mac Camera and Audio
Added on Tue, Mar 17, 2020
How do I change my screen resolution (screen size) on my Mac when connected to an active board or flat panel display?
Added on Tue, Jun 30, 2009
The system often will not show the Display icon in the menubar even when you have an external display connected (a problem since Mac OS X 10.8). If you are having that problem, you can use the Display Menu application instead, which is located in the... Read More
My Avervision software does not work with my document camera.
Added on Wed, Aug 26, 2009
Here are some troubleshooting procedures to determine why your Avervision software may not be working with your document camera. 1. First be sure that you are accessing the software that is compatible for the document camera you are using: 300AF... Read More
My Sound System is not working properly. What can I do to check that it is set up correctly?
Added on Mon, Jun 29, 2009
New ActivSound Audio System (2011): The ActivSound audio system has a main amplifier with 4 volume control knobs, next to the power on button. The first two knobs control the microphones volume, the other two control the computer and VCR. Be sure... Read More
How do I clean my projector filter?
Added on Mon, Jun 29, 2009
Filters need to be cleaned monthly. If you cannot safely reach the filter on the projector in your instructional space, call x6012 to request assistance from your custodial manager. The custodial manager will leave a note for you that the filter has... Read More
Where can I download a users manual for my projector?
Added on Mon, Jun 29, 2009
The following projectors are supported by the Technology Department. Repairs and replacement bulbs will be provided if it is cost effective to complete the repair (bulbs or repair costs must be less than half the current price of the projector). ... Read More
When I turn on my projector and look at my screen / activeboard it shows my desktop background only, but no icons.
Added on Fri, Aug 28, 2009
You will need to change your display settings to Turn On Mirroring. In the Menu Bar, click on the Display's icon (upper right corner of your screen) and select Turn On Mirroring. Your projected image will now "mirror" your Desktop. If the... Read More
The projected image when using the document camera doesn’t fill the entire screen.
Added on Wed, Jun 26, 2013
There is a setting on one of the switches on the document camera that can cause the image to project with a black border at the top and the bottom of the screen.   Look at the side of your doc cam and you'll see two black switches. If the... Read More
My projector or computer won’t start after a power outage. What should I do?
Added on Wed, Feb 16, 2011
For projectors, unplug the power cord for 10 minutes. Then plug the power cable back in and start the projector again. If it still doesn't start up, please fill out a Web Help Desk work order ticket. For computers, unplug the power cord for 10... Read More
What should I do if my sound system isn’t working properly?
Added on Mon, Jul 27, 2009
If you are unable to solve the issue, please open a Web Help Desk work order ticket for your sound system issue. Please include: Your school Room number NSD barcode number on the sound system A description of the problems or symptoms you are... Read More
Why is my projector not recognizing my computer? Error says: "No Input Detected".
Added on Mon, Jul 6, 2009
Try reseating (unplug and replug) the VGA cable (connected to your computer via the white "dongle") that goes from your computer to the faceplate. Unplug and replug at both the computer and at the wall jack. If your computer goes through your... Read More
What should I do if my document camera isn’t working properly?
Added on Mon, Jun 29, 2009
If there is no projection on the screen: The camera needs to be set for the appropriate channel in accordance with the cable used. Some cameras have a switch on the side that switches between TV and RGB, so it should be set appropriately. Other... Read More
May I borrow district AV equipment (projectors, document cameras, cameras, etc.) for personal events off-campus?
Added on Mon, Oct 25, 2010
District resources purchased for instructional use may not be used for personal purpose unless that use is in conjunction with the rental of a school facility.  Board Procedure 8361P states:     ADMINISTRATIVE PROCEDURE No. 8361P ... Read More
My document camera shows an error "Computer 2 source not supported." - or -no image at all on the screen.
Added on Tue, May 24, 2011
If your document camera doesn't display an image and/or shows the error "Computer 2 source not supported," check the camera to see that it is set to RGB mode.  There is a small switch located on the side of the document camera and when it... Read More
My Document Camera is projecting a wavy or blurry image through my projector.
Added on Fri, Sep 18, 2009
If the image on the document camera appears to be blurry or wavering it may be an issue with the "Mode" that the camera is in. The AverVision 300i and 300p document cameras can either be set to Text mode or Graphic/Picture mode using the camera'... Read More
My projector is projecting upside down. How can I flip it back?
Added on Tue, Aug 18, 2009
For Epson Powerlite 95 You can change the projection mode to flip the image over on your remote. Hold down the A/V Mute button on the remote control for five seconds. The image disappears briefly and reappears flipped top-to-bottom. For Epson... Read More
What should I do when my document camera picture is really fuzzy?
Added on Tue, Jul 14, 2009
Procedures for focusing your document camera will vary slightly depending on the model you have. Document cameras that include "AF" in the model number are auto-focus models. If they are out of focus, press the Autofocus button on the base of the... Read More
The projected image on my whiteboard isn’t right - the image on the screen is red (or blue or purple or fuzzy or blurry).
Added on Wed, Jul 8, 2009
The VGA cable connecting the overhead projector to the document camera or computer port may not be working properly or may be insecurely connected. Try the following: Disconnect, then reconnect the VGA cable from the wall jack to your computer or... Read More
What should I do if I’m interested in surplussing my TV?
Added on Mon, Jun 29, 2009
Please submit a request to the InfoCenter x6012 for the Maintenance Department. surplus, throw away Read More
How can I extend the life of my bulb?
Added on Mon, Jun 29, 2009
Please turn off the projector when not in use. Shut down the projector at the end of each day. You can also use Whisper Mode, which will project a dimmer image on the screen. Less projected light from the projector will increase the bulb life. ... Read More
When is it best to blank/AV mute vs turn the projector off?
Added on Mon, Jun 29, 2009
Using the projector remote to invoke blank/AV mute will display a blank image. This feature is useful if you need to put up a blank screen during a presentation. Blanking keeps the projector on and uses bulb time (thus shortening the life of the... Read More
What should I do if the filter timer reset message appears on my screen?
Added on Mon, Jun 29, 2009
First, clean the projector filter (or have the custodian, STS, or TRT clean the filter). Then, reset your filter timer using these instructions (Hitachi projectors only): Turn the projector on. Select the menu button on the projector remote. Use the... Read More
What should I do if my projector needs repair or if the bulb on my projector blows?
Added on Mon, Jun 29, 2009
Please open a Web Help Desk work order ticket for your projector issue. Please include: Your school Room number NSD barcode number on the projector A description of the problems or symptoms you are experiencing. Technology will send a technician to... Read More
My sound system is making a loud buzzing sound.
Added on Tue, Mar 6, 2012
A loud buzzing sound can be caused by the computer audio cable touching a metal surface and the other end being plugged to the wall plate. This is could happen when audio cable is not plugged to computer and laying around on the table. To fix the... Read More
I have an ActivPanel. There’s no image on the panel and it displays the message "Out of Range"
Added on Fri, Dec 10, 2010
The display settings need to be set to 1024x768 at 60hz.  When the "Out of Range" message displays, the refresh rate is set too high for the ActivPanel to display properly.   To remedy the situation, connect the ActivPanel to both the... Read More