General Information

Q1. What is AVSU?
Q2. What services does AVSU provide?
Q3. What are the service hours of classroom AV emergency call service?
Q4. What is the phone number of AV emergency call service?
Q5. What kinds of AV equipment are available in classrooms?
Q6. What kinds of AV equipment can I borrow from the Loan Counter?
Q7. How can I borrow AV equipment?

Access to AV equipment

Q1. How can I get password to access to AV equipment in classroom?

AV Control System

Q1. What is AV Control System and how to use it?

Microphone

Q1 : Where can I get a wired microphone in classroom?
Q2 : What can I do if the wired microphone in classroom does not work?
Q3 : Where can I get a wireless microphone in classroom?
Q4 : What can I do if the wireless microphone in classroom does not work?

Built-in PC

Q1. What kinds of software are installed in built-in PC?
Q2. Can I install software or save files into built-in PC in classroom?
Q3. Can I access to Internet by using built-in PC in classroom?
Q4. Where is the wireless mouse in classroom?
Q5. What should I do if the wireless mouse does not work?
Q6. How to use the writing panel in classroom?
Q7. What should I do if the digital pen does not work?

Notebook computer

Q1. How to use notebook computer in classroom?
Q2. How can I output the audio of my notebook computer to the amplifier system.
Q3. Can I make Internet connection by using my notebook computer?

VCR

Q1. What can I do if there is no video and audio when VCR tape is being played?
Q2. What can I do if the VCR player cannot be controlled by using touch panel?
Q3. How to select the correct language if my VCR tape has dual languages?
Q4. What can I do if the projected image flickers?
 

DVD / VCD / CD Player

Q1. What can I do if the DVD player cannot be controlled by using touch panel?
Q2. What can I do if the DVD player stops immediately when I try to play my DVD?
Q3. How to select chapter for my DVD?
Q4. How to select language for my DVD?
Q5. How to select subtitle for my DVD?
Q6. Does the disc player support time search function?

Cassette

Q1. What can I do if there is no audio when I am playing the cassette tape.
Q2. Can I record my voice by using cassette deck?

AV Input

Q1. How can I connect my AV device (eg. DV camera, MD player ...) to the system?

OHP

Q1. What can I do if there is no light when the OHP is switched on?
Q2. What can I do if the projected image is not clear?

Visual Presenter

Q1. What can I do if projector cannot project the image from visual presenter?

General Information

Q1. What is AVSU?

A1. AVSU (Audio Visual Services Unit) is a university-wide service unit primarily responsible for providing technical support services for AV equipment used for classroom teaching.

Q2. What services does AVSU provide?

A2. The services provided by AVSU include:

1. Classroom Service
2. AV Equipment Loan Counter Service
3. AV Presentation Room
4. Video Conferencing Service
5. Special Event Set-up Service
6. Technical Consultation for Special AV Planning and Installation Projects

For more details, please refer to: http://www.avsu.cuhk.edu.hk/os/index.html

Q3. What are the service hours of classroom AV emergency call service?

A3. Classroom on-call service hours on regular teaching days are:

Monday - Friday : 8.15a.m. to 8.15p.m.
Saturday : 8:15a.m. to 12:45p.m, 1:45p.m. to 5:00p.m

Q4. What is the phone number of AV emergency call service?

A4. AV emergency call service hotline is 2609 6060 .

Q5. What kinds of AV equipment are available in classrooms?

A5. Please visit: http://www.avsu.cuhk.edu.hk/ci/el.html

Q6. What kinds of AV equipment can I borrow from the Loan Counter?

A7. You can borrow three kinds of equipment. They are:

1. Audio Equipment
2. Video Equipment
3. Presentation / Projection Equipment

For more details, please refer to http://www.avsu.cuhk.edu.hk/os/ael.html

Q7. How can I borrow AV equipment?

A8. You may:

- Reserve the equipment by calling 2609-6062 and then
- Return the Equipment Booking Form to AVSU by internal mail or fax at 2603-5301.
( The Equipment Booking Form can be obtained from AVSU Loan Counter or download from http://www.avsu.cuhk.edu.hk/dl/index.html ), or
- Using Online Booking System ( To use the system, you must be a staff and have registered to the system. )

Access to AV equipment

Q1. How can I get password to access AV equipment in classroom?

A1 .The password is controlled by various classroom management offices. You can contact related classroom management office to get the password before your lesson. For the phone numbers of management offices, please refer to : http://www.avsu.cuhk.edu.hk/ci/aec.html

AV Control System

Q1. What is AV Control System and how to use it?

A1. AV Control System is designed to make the operation of AV equipment more user-friendly. There are 2 types of AV control system. The followings are their operation manual:

1) For control system with large touch panel, please refer to http://www.avsu.cuhk.edu.hk/ci/om_ct-1600.html
2) For control system with small touch panel - http://www.avsu.cuhk.edu.hk/ci/om_ct-1000.html

Microphone

Q1. Where can I get a wired microphone in classroom?

A1. Wired microphone is locked inside the AV cabinet. You need a password to unlock the AV cabinet.

Q2. What can I do if the wired microphone in classroom does not work?

A2. Please check the followings:

1. make sure that the switch of microphone is turned on, and
2. make sure that the AV Control System is switched on, and
3. make sure that the microphone cable is connected to the AV microphone socket, and
4. make sure that the level bar of mic volume in control system is not "mute" or minimized.

Q3 : Where can I get a wireless microphone in classroom?

A3. Wireless microphone is locked inside the AV cabinet. You need a password to unlock the AV cabinet.

Q4 : What can I do if the wireless microphone in classroom does not work?

A4. Please check the followings:

1. make sure that the microphone is switched on, and
2. make sure that the AV Control System is switched on, and
3. make sure that the level bar of mic volume in control system is not "mute" or minimized, and
4. replace the battery if necessary.

Built-in PC

Q1. What kinds of software are installed in built-in PC?

A1. Please refer to: http://www.avsu.cuhk.edu.hk/ci/om_software.html

Q2: Can I install software or save files into built-in PC in classroom?

A2. No, there is a recovery system installed in the classroom built-in PC. When the computer boots up, a preset file system will be reloaded. All newly installed software or files will be erased.

Q3. Can I access to Internet by using built-in PC in classroom?

A3. Yes, all built-in PCs in our classrooms are connected to ClassNet. You can login to Internet by using your own login ID and password. Login information is provided by ITSC.

Q4. Where is the wireless mouse in classroom?

A4. The wireless mouse is kept inside the AV cabinet. You can open the AV cabinet by using your password.

Q5. What should I do if the wireless mouse does not work?

A5. Wireless mouse is battery-operated. If the wireless mouse does not work, please contact AVSU ( Tel: 2609 6060 ) for assistance.

Q6. How to use the writing panel in classroom?

A6. Please refer to http://www.avsu.cuhk.edu.hk/ci/om_digital_class.html

Q7: What should I do if digital pen does not work?

A7: Digital pen is battery-operated. If the digital pen does not work, please contact AVSU ( Tel: 2609 6060 ) for assistance.

Notebook computer

Q1. How to use notebook computer in classroom?

A1. Please try the following procedure:

1. Press "Power On" button to switch on AV Control System
2. Press "Notebook" button to start notebook mode.
3. Connect VGA cable to your notebook
4. Switch on your notebook
5. Hold [Fn] key and press [CRT/LCD] key once or twice to select dual display mode

The [CRT/LCD] key depends on different notebooks. The followings are for your reference only:

Notebook Brand name	Function Key
Acer	[Fn] + [F5]
Dell	[Fn] + [F8]
Fujitsu	[Fn] + [F10]
IBM	[Fn] + [F7]
NEC	[Fn] + [F3]
Panasonic	[Fn] + [F3]
Samsung	[Fn] + [F4]
Sharp	[Fn] + [F4]
Sony	[Fn] + [F7]
Toshiba	[Fn] + [F5]

If there is no projection image from the notebook computer, you can:

1. check connection between notebook and VGA cable, or
2. switch your notebook to dual projection mode by holding the "function key" (Fn) or
3. restart your notebook

Q2. How can I output the audio of my notebook computer to the amplifier system.

A2: You can connect audio cable to your notebook. The AV cable is either hanged outside the AV cabinet or kept inside the box on the desktop of lectern.

Q3. Can I make Internet connection by using my notebook computer?

A3. You can setup the Classnet connection to your notebook computer. To setup Classnet connection, please refer to the instruction provided from ITSC - http://www.avsu.cuhk.edu.hk/ci/om_software.html

VCR

Q1. What can I do if there is no video and audio when VCR tape is being played?

A1. VCR tape may reach the end. You can try to rewind or forward the VCR tape and play it again. If you are sure that the VCR tape is rewound to a correct position. You may switch off and then switch on the AV control system again.

Q2. What can I do if the VCR player cannot be controlled by using touch panel?

A2. You may:

1. check the power of the VCR player to make sure that it is switched on.
2. try to control the VCR player by pressing the buttons on the VCR player and report the problem to AVSU (Tel: 2609 6060)

Q3. How to select the correct language if my VCR tape has dual languages?

A3. You can press the “Audio?button on the touch panel to select audio channel.

Q4. What can I do if the projected image flickers?

A4. You may switch off and then switch on the AV control system again.

DVD / VCD / CD Player

Q1. What can I do if the DVD player cannot be controlled by touch panel?

A1. You may:

1. check the power status of DVD player and make sure that it is switched on.
2. try to control the DVD player by pressing the buttons on the DVD player or remote control and report to AVSU (Tel: 2609 6060)

Q2. What can I do if the DVD player stops immediately when I try to play my DVD?

A2. The DVD player may not support the region code of your DVD disc. Please contact AVSU (Tel: 2609 6060)

Q3. How to select chapter for my DVD?

A3. You can press “DVD Advanced Control?button and then press the “menu?button on the touch panel to select different chapters.

Q4. How to select language for my DVD?

A4. You can press “DVD Advanced Control?button and then press the “language?button on the touch panel to select different languages.

Q5. How to select subtitle for my DVD?

A5. You can press “DVD Advanced Control?button and then press the “subtitle?button on the touch panel to select different subtitle.

Q6. Does the disc player support time search function?

A6. All disc players support time search function for DVD. You can use the remote control to control the time search function. But, not all the disc players support time search function for VCD.

Cassette

Q1. What can I do if there is no audio when I am playing the cassette tape.

A1. Check that the cassette tape is playback in correct side (Side A or Side B).

Q2. Can I record my voice by using cassette deck?

A2.       Yes, you can record your voice through the microphone by using cassette player. They followings are the steps:

1. power on AV Control System, press “cassette?button
2. insert your cassette tape into the cassette deck at right hand side
3. press “Rec?button to record

AV Input

Q1. How can I connect my AV device (eg. DV camera, MD player ...) to the system?

A1. You can connect your AV device (eg. DV camera, MD Player) by using the provided AV cable. The AV cable is either hanged outside the AV cabinet or kept inside the box on desktop of lectern.

OHP

Q1. What can I do if there is no light when the OHP is switched on?

A1. Please check:

1. make sure the switch of power socket on wall is "ON", or
2. switch the OHP to "Spare Lamp" position.

Q2. What can I do if the projected image is not clear?

A. You can:

1. adjust the foucs of OHP.
2. adjust the distance between OHP and screen.

Visual Presenter

Q1. What can I do if projector cannot project the image from visual presenter?

A1  Please check:

1. Make sure that the AV Control System is switched on and visual presenter button has been pressed.
2. Check the power of the visual presenter.
3. Switch on the visual presenter by pressing the power button on the visual presenter.