Classroom IT Support

1. Projector no signal

Q: I am teaching in TA201. After I started the system, the monitor works well but there is no signal of the projector. What should I do?

A: Please check to see if there is light coming out of the projector (to check whether the projector is turned on). If it is turned on, please check if the computer is in the duplicate mode (Windows+P desktop). You can switch between duplicate and extend modes. Also, please check whether you chose the correct signal source on the touch screen.

 

2. I am not able to turn on the desktop computer

Q: I am in the TA201 class and I cannot turn on the desktop. The projector does not work. So, how can I restart the computer?

A: Please check whether the touch screen is on. If it is open, click on the “Device” interface. Click the PC button. Then press the power button of the PC and hold for 5 seconds to turn off and on again.

 

3. the volume control

Q: I am teaching in TA201 and want to adjust the volume of the computer and microphone. What should I do?

A: Click “Volume” on the center control panel to increase or decrease the volume or mute the sound.

 

4. Play the video without sound

Q: I am teaching on TA201. There was no sound when I play the video. What should I do?

A: If you are using the PC in the class room to play, please click “Volume” on the center control panel to increase the volume the sound. If you are using your own laptop, when connecting with the VGA, you need to connect Audio cable in the multimedia box and check whether the laptop's audio option is Speaker; if connecting with the HDMI, you do not need to connect the audio cable, but you need to confirm another signal as the default device.

 

5. lighting control

Q: I am teaching in TA201. I want to turn off some lights. What should I do?

A: Open the touch screen and click Light. There are various modes and single lamp controls. You can freely adjust the effect you want.

 

6. projection screen lift

Q: I am teaching in TA201. Since the projection screen blocked the blackboard, I want to raise the left projection screen to write on the blackboard. What should I do?

A: Open the touch screen and click on Screen to lift the screen.

 

If these tips don’t help, you can contact 84273333 directly. If you think that the problem is not urgent, you can also email us at isupport@cuhk.edu.cn at your convenience. We will deal with it as soon as possible.