2017년 11월 29일 수요일

troubleshooting

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Troubleshooting
Projector: Why does the image display on my laptop but not through the projector?
If the image displays on your laptop but not on the projection screen, you must activate the external display.  Doing so tells the computer that it should output its display to the screen.  To activate the external display, press and hold the “Function” key on your keyboard (usually to the left of the Space Bar and labeled “Fn”) while simultaneously pressing the appropriate “F-key” along the top of your keyboard. Below are some common F keys by vendor:
I-pad
Rebooting: Rebooting means to restart the app, wi-fi, and/or the iPad. Turning the device or app off and back on is like sleeping for the devices, and it solves more than half of the problems that arise. There is a difference between closing an app and turning it off. Closing involves pressing the home button or going to another app, while turning it off requires double pressing on the home button and swiping up on the app that you wish to close. Locking the device by pressing the power button once is also different from turning the device off by holding the power button for approximately 3 seconds. Make sure to reboot by turning off the apps and iPad.
Connecting a Windows-based laptop to the LCD projectors
Before you begin, make sure the projector and laptop are turned off, and connect the VGA cable. This is the cable which is connected to the cabinet. Connect the other end of cable to the laptop's VGA (monitor) port. Tighten the screws on both connectors to make sure they are fastened securely.
Connect ethernet cable to access the Internet if desired. Turn on projector before turning on your laptop. If computer image does not show on screen, press either Fn+F7, Fn+F5, or Fn+F8. The correct key combination will depend on your laptop's manufacturer and model, and may still be a different combination than those listed here.
Connecting an Apple laptop to the LCD projectors
Before you begin, make sure the projector and laptop are turned off. Connect the VGA cable. This is the cable which is connected to the cabinet. Connect the other end of cable to the laptop's VGA (monitor) port. Tighten the screws on both connectors to make sure they are fastened securely. (You will likely need an adapter to connect the VGA cable to your laptop. Classroom Support DOES NOT supply these)
Connect ethernet cable to access the Internet if desired. Turn on projector before turning on your laptop. Open the control panel on the laptop. Select monitor. Set monitor to mirror. This will enable you to see the image on both your computer screen and the LCD projector.
No Sound
There are so many reasons why sound stops working. Usually it’s one of three issues: 1) Volume is muted, so unmute it. A cousin to that is that many times, the volume is low, so all you have to do is turn it up. 2) Headphones are plugged in, which means you can’t hear sound through the speakers. Unplug them. 3) The computer bumped sound out of the operating queue. Maybe your system resources are low. Who knows. All you have to do is reboot.
I Erased My Document/Text
This is where I am a hero for at least a day -- maybe longer. Sometimes, students highlight their 20-page document to change margins (or who knows what) and accidently delete the entire document. No worries. Ctrl+Z (hold Ctrl and then push Z) will bring it back. That Undo shortkey goes back 200+ steps in case it happened a long time ago.
Keyboard Doesn’t Work
Anytime a piece of computer hardware appears to not work, I check first. With the keyboard, push Num Lock on the right side. If the Num Lock light goes on/off, the keyboard is working. If it doesn’t, replug cord into back of tower or reboot. Most of the time, that’ll fix it. Sometimes, your keyboard really is broken and you need a new one.
Mouse Doesn’t Work
Like with the keyboard, check it first. Move it around to see if the cursor moves. If it doesn’t, do the same as you did for the keyboard -- replug cord into back or reboot

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