Support & Troubleshooting

Browse through the most common issues below. If you cannot find a solution to your issue, please call a technician at one of the numbers listed on the right, or access the U of L IT Online Help Desk Work Request form.

Check that you are using the correct remote control. Panasonic and Toshiba remotes are for DVD players, Sharp, and NEC remotes are for Data projectors.
Make sure that none of the remote buttons are stuck in the ‘down’ position (a common problem with SHARP projectors).

Get as close as possible to the front of the projector and hold the power button down for at least five seconds.

You can determine if the remote is working properly by testing the built in laser pointer. If that fails, the remote probably needs new batteries. In most cases, there will be spare batteries in the cabinet, or the batteries from the DVD remote can be used in an emergency.

Try using the remote from the rear or sides of the unit (there are usually 4 remote sensors – one for each side). Remove the batteries from the remote and re-insert them.

If there are any red or flashing status lights, the projector may need servicing. Note that it is normal for these lights to flash during warm-up and cool-down periods which can take up to two minutes.

If there are no lights anywhere it is probable that the data projector main power switch has been turned off. This switch is located on the side or back of the unit where the main power cord is attached. If possible, flip this switch to the ON position and ensure that the power cable is firmly connected.

If these steps fail, try using the desktop projector control software.

This is usually caused by the wrong input being selected. The standard settings for input are: Input 1 or Computer 1 or RGB 1 is for the laptop, Input 2 or Computer 2 or RGB 2 is for the desktop computer, Input 3 or Video is for the DVD/VCR player, Input 4 or S-Video is for miscellaneous devices.

On Sharp remotes, the inputs are selected by repeatedly pressing the ‘Input’ button.

On NEC remotes, there is an individual button for each input source.

It is fairly common that users will unplug the video amplifier boxes in order to use the outlets for their laptop power adapters. Check to ensure that all power bars are turned on and that both VGA amplifier boxes are plugged in. Generally speaking, there should be no unplugged cables in the cabinet or under the desk. Use power outlets on the side of the desk for laptop connection.

Check the VGA connector cable. If there are any bent or missing pins it can prevent the video from transmitting properly. Most connectors have a disposable end that can be removed in the event that the pins are damaged. When this is done, the user can connect the cable directly until a technician can replace the connectors.

This scenario can be caused by a few different problems: overheating, dust filters need cleaning, power-save timeout due to no input being detected, lamp hour meter reaching maintenance point, power interruption, and mischievous students screwing around with the remote.

If your laptop or the desktop computer have gone into power-save mode, or the connection between your laptop and the projector has been interrupted for a few minutes, the projector can shut off automatically to save power. This is normal behavior. Turn the unit back on using either the remote control or the control software. You can turn off power saving options in the control panel of your laptop.

If the lights are flashing, wait a few minutes for them to stop – this may be an indication that the projector needs to cool down. When the lights stop flashing, try to turn the projector back on with the remote control.

If the lights are solid, try to turn the projector on immediately with the remote. You can also use the desktop computer control software to restart the projector. This option is preferable because it issues a command to “reset” the projector’s error status – which can clear common warnings that would prevent the unit from starting.

If both the remote and the control software are not responsive, a technician will be required.

Resetting the lamp hour meter is not advised as it will interfere with the maintenance schedule of the projector. Clearing the “clean filter” warning can be done from within the projector menu as long as a help desk request is completed to arrange for cleaning.

If there are no lights flashing, try resetting the projector by switching the main power switch off for a few seconds, then back on. If this does not cause the lights to illuminate, then the circuit breaker has tripped off, or the projector’s internal power supply has problems. In both of these cases, a technician will be required to fix the problem.

The projectors will display on-screen diagnostic messages from time to time. These messages will usually clear after a couple minutes of viewing unless they indicate an urgent problem. In the event that one of these messages is obstructing important information, you can clear it from the screen by pressing bringing up the on-screen menu and then cancelling out of it. Please complete a help desk request if the projector has a maintenance warning message.

There are a few critical messages that cannot be cleared from the screen. These messages will require a technician to remove. If the class cannot proceed with the message on screen, a temporary projector cart may be used in the interim.

For alerts that appear after a specific time interval, turning the projector off and then back on again, or pressing the “cancel” button for a few seconds can make the alert disappear for a few more hours.

The most common reason for a projector remote to fail is low batteries. To determine if the remote has power test the built in laser pointer. If using a Sharp remote, you can also use the backlight button to test this.

There should be additional batteries located in the desk cabinet. When these batteries are used, it is a good idea to complete a help desk request to have them replaced. In an emergency, the batteries from the DVD remote may be used.

Some of the remotes have buttons that can be easily jammed in the ‘down’ position. Before replacing the batteries, take a look to ensure that none of the buttons are jammed (especially the power and volume buttons on Sharp remotes). When one button on the remote is stuck in this fashion it will prevent any of the other buttons from functioning.

If it is a specific function of the remote that is not working (ie Black-screen, laser pointer, mouse function) you may need to set the remote to the correct mode. Sharp remotes have a small switch near the bottom that will switch between ‘Mouse’ and ‘Adjustment’ modes. NEC remotes have a round PRJ button that toggles between projector control and mouse control modes. It is also useful to note that the laser pointer requires more battery to work reliably – therefore it may stop working before other remote functions do when the batteries are low.

It is possible (though rare) that the batteries may become loose inside the remote control. In this case, simply re-seating the batteries will correct the problem.

The projectors can handle a wide variety of resolutions, color depths, and refresh rates. It is almost always a good idea to use the projector’s ‘native’ settings for best results. All of our projectors currently operate at XGA resolution (1024x768).

In your laptop’s display control panel make sure the resolution is at 1024x768. The colour depth is 32 bit, and the refresh rate is 60Hz.

Having your resolution set lower then this will result in larger text and graphics, but with slight blurring of details as the image is being stretched to fill the entire screen.

Having your resolution higher is usually more problematic. Text may appear unreadable and images will lose pixels, giving them a grainy or disproportionate appearance.

The VGA amplifiers that are used also have restrictions on the type of signal they can process. If you exceed the supported resolution of the VGA amplifier, you will get an error on the projected image that says either ‘No Signal Detected’ or ‘Out of range’.

When you are using settings that do not conform to the ‘native’ settings of the projector, the images may appear distorted or not aligned with the edge of the screen. Most projectors have menu adjustments that will allow you to fine tune the picture quality – most of these problems will be eliminated by pressing the ‘Auto Adjust’ button once on the remote. Some video drivers will have additional settings in the display control panel to address these problems.

The video signal from computer inputs is divided into red green and blue channels. If one of the small cables in the video connector is damaged, you can usually see that the image is missing that hue, and will therefore be tinted the opposite color. The most common cause of this is a worn or damaged laptop video connector. Ensure that the connection is secure and remove the replaceable VGA connector if necessary.

To determine if it is a problem with the projector or with an individual piece of equipment, you can test one of the projector’s other inputs (ie. the desktop computer). If the problem is evident on more then one input it is likely a projector menu setting.

If you are using the desktop computer, make sure that the video cable is securely attached to the back of the PC.

The projector settings will also allow you to adjust the level of red, green and blue saturation. If these settings have been changed in a previous class, they may need to be reset to get the best picture quality. If possible, press the ‘Auto Adjust’ button on the projector remote.

For SHARP projectors, in the main menu – make sure that the signal type is set to RGB instead of ‘component’. When this is not set properly it will cause the image to appear tinted red.

Not every classroom is equipped with the desktop control software. Every room which has the capability should have the desktop software installed. The user must login before the program can be used due to the permissions needed to access the serial port or web interface.

When the projector is turned on or off, the control software will become unresponsive while the unit warms up or cools down. This is to protect the machine from damage that may occur from overheating or rapidly turning the bulb on and off.

Not all projectors support volume control and screen blanking, therefore these features may require use of the remote control instead.

The connection for network and serial control can be enabled and disabled in the projector menu. Units that lose power or are reset can have these features disabled until a technician can visit the room.

If the buttons appear ‘grayed-out’, that indicates that the projector is being controlled by another user and the serial port is unavailable for transmission. In this case, the software should work properly once the user has control of the serial port again.

Make sure that the computer is plugged in and all power bars are turned on. The computer may not boot properly if there is a USB Memory Stick or CD-ROM in the drive. Hold the round power button for a few seconds and it should illuminate with a green light.

Check the desktop monitor power switch and cable as this may make it appear as if the desktop computer is non-responsive.

If the green light turns on and the screen is working but nothing appears, there may be a problem with the computer power supply. Hold the power button for 10 seconds to reset the machine.

If there is no green light despite repeatedly pressing the power button the computer, check that the rest of the equipment in the desk is getting power. The circuit breaker may have tripped, or one of the power bars might be reset.

If all these steps fail to get the computer started, a temporary cart may be used until a technician can resolve the issue.

Does the desktop monitor have a light visible on its power button?

If the monitor has a light indicating it is turned on, try restarting the desktop computer by holding the power button for 10 seconds, then pressing it once briefly. The amber light should switch to green when the display receives a signal. If it does not change color, check the VGA cable is properly connected to the amplifier box, and that the amplifier is connected to power and the back of the PC. It is not uncommon for the amplifiers to be unplugged to free up outlets for laptop power.

If not, check to ensure that the display is plugged in and the power cord is firmly connected behind the screen. Locate the power switch on the bottom right edge of the screen and switch it off for a few seconds, then back on. Confirm that other equipment in the desk is getting power.

If the desktop computer is set to a high resolution or refresh rate, the message ‘out of range’ will appear on the LCD monitor.

After a period of time, the desktop computer will activate the screensaver and then the ACPI power save mode. This will cause the LCD screen to go into standby mode until the computer gets some input from the keyboard or mouse. Check to see if the machine is responsive by pressing the ‘Caps Lock’ key. If the keyboard caps light does not respond, then the computer has likely crashed and must be rebooted.

Classroom computers are set up to log in to the ULETH domain. This is the same network that is available in the computer labs, study center, and at email stations. Your normal university username and password should be used. Your username is usually firsname.lastname and your password is your 9 digit university identification number INCLUDING preceding zeros. Ensure the domain is set to ULETH.

If you have changed your password using the online account management tool these changes will be reflected on all campus networks. If you need to reset your password, you will need to contact the Solution Centre.

If you get the error message ‘Domain ULETH is not available’, it is usually an indication that the network connection to the PC has been interrupted. Make sure the Ethernet cable is firmly connected and that all power bars and network switches are plugged in and operational. It is not uncommon for users to unplug network switches to get access to additional electrical outlets. If the network is properly connected and you still get this message, the domain controller server may be temporarily unavailable. Check the server status page and contact server support to report the problem if necessary.

Note that though it is possible to login to multiple machines on the ULETH network, it is not advisable since it can lead to profile corruption and slow network performance.

During periods of peak network activity (between classes, early morning and around noon), it is normal for login times to increase. For users with large profiles login may take up to two or more minutes. Classroom computers are normally slightly slower when accessing network resources than lab machines.

In most cases, long login times can be attributed to the user account. Try logging in with the guest account to determine if the problem is specific to that machine. If performance is still poor then there may be a problem with the computer or network switch. Complete a help desk request for that room.

If your user account is excessively slow, you can resolve the problem by decreasing the size of your profile. Through normal use your account can collect a lot of ‘application data’ settings that will follow you from machine to machine. Cleaning your profile will clear all Internet bookmarks, desktop settings, email preferences, and other user-specific settings.

Pressing the power button on the front of the computer once will initiate the shutdown process. This does not happen immediately since the machine will attempt to logout and synchronize your account information to the network first. Depending on the size of your account and the time of day, it can take up to two or more minutes for this process to complete.

Forcing the computer to shut down by holding the power button or unplugging the unit can cause your account to become corrupt and also render the machine unusable. Only use forced shutdown when the machine has stopped responding for three or more minutes. (Use the caps lock key to confirm if the machine is responsive) The power button on the front of the computer will force reset if held down for 10 seconds.

Applications that have stopped responding can cause the computer to hang for a period of time during shutdown. If the projector control software is in the process of warming or cooling the projector it can delay the time required to logout.

It is not necessary to shut down the computer when you are finished using it. Computers and projectors left running for an extended period of time will be shut down remotely over the network.

The classroom computers have been configured to have the same software that is available in the computer labs. The only exception to this rule is special packages with limited licensing. Most commonly used application can be found under ‘Class Software’ in the start menu. Common media players, plug-ins, and the CODECs are installed to provide support for many different file types.

If you have a software package that you would like installed on the classroom computer, a formal request along with proof of licensing must be submitted in a help desk request one week prior to the required date. At the beginning of the semester, several classrooms are customized to include course-specific software.

The ‘My Documents’ folder, as well as a number of other resources on the desktop are only available from the computer’s home domain. Most faculty members are logging into the ULETH domain, which means their My Documents, Shared files, etc… will only be accessible by other ULETH machines. If you know the IP address of your computer or fully qualified UNC name, it is possible to map a network drive to access those files. Generally, the best way to make files available between the office and classroom computers is to use your personal drive (P:\).

Other options include: class web space, WebCT file storage, class fileserver share, email file transfer, CDROM, and USB flash drive.

CD-R disks that are recorded using DirectCD or DLA format are supported. If you have started recording a CD but have not closed the session, the drive will probably not be able to read properly. In this case, take the disk to the computer labs and have the proctor close any open sessions before attempting to use the disk in a classroom.

Certain brands of recordable CD (especially re-writable) are not compatible with the Dell CD-ROM drives installed in the classrooms. Brands that work well include Maxell, Fuji, Kodak, Sony, and Memorex. Brands that are not reliable include Certified Data, Nexxtech, and Pacific Digital.

The classroom computers are preloaded with a wide variety of media players and CODECs. Since there are new formats being created daily and update versions of these CODECs, you may not always have the software you need to play media on the classroom machines. Always test your presentation material in advance.
The following players along with all the default CODECs are installed: Apple QuickTime, Real Player, and Windows Media Player.

If you have access to the Internet, it is possible for all three of these applications to download updated CODECs when they are required. You may need administrator access to install the updates. If you require a specific update or media player, please submit a help desk request one week in advance.

One common problem when using Apple QuickTime formats in PowerPoint: The MacOS version of QuickTime contains CODECs that are not available in the PC version. If you are compressing your videos on a Macintosh, make sure that you use Sorenson, Cinepak, or MPEG2 encoding to prevent this problem.

Classroom computers are subject to the same firewall restrictions as all other computers on campus (with the exception of reznet). If you have included streaming media in your presentation material you should test it before your presentation and have backup material available in case it is not available.

When you link to a video file or Internet resource from within a presentation, it only includes the address of the resource. The address is subject to change at any time and may also contain session identifiers that will expire before you plan to present your material. For this reason it is always a good idea to have a copy of the material available on your machine instead.

Streaming video and audio is also subject to the same restrictions mentioned above (with regards to CODECs and compression formats). You may need administrator access or help updating the computer to include newer or more obscure CODECs.

If the media is being served on a non-standard port, you may not be able to access it from behind the University firewall.

Third party or Windows firewall software may interfere with access to certain network resources. If you are unsure how to configure your firewall please contact the help desk for assistance. Although it is not advisable, you can temporarily disable your firewall if necessary.

Wireless mouse control is only available in certain rooms. If the projector supports wireless mouse function, you will see a small black receiver located near the desktop computer. The projector remote must be pointed at this receiver when in use.

Wireless mouse control is only available in certain rooms. If the projector supports wireless mouse function, you will see a small black receiver located near the desktop computer. The projector remote must be pointed at this receiver when in use.

The left mouse button is located on the bottom of the remote.

The right mouse button is located near the directional control pad.

On Sharp remotes the small mode switch at the bottom of the remote must be set to ‘mouse’.

If the NEC remotes are unresponsive, press the ‘PRJ’ button once to set the control pad to mouse mode.

To determine if the remote has sufficient battery to operate as a mouse, test the laser pointer function. If the laser illuminates the mouse function should work as well.

The wireless remote has about 10 meter range but must be pointed within 20 degrees of the receiver in order to work properly. Make sure there are no obstructions between the remote and the receiver box.

Adjust the tracking control on the VCR remote. Make sure the tape you are using is in good condition and that it is in NTSC format. If you have access to another VCR, test your tape to make sure that the problem is not caused by a faulty tape.

If the tape is jammed or the VCR contains any debris, it may immediately eject the tape or fail to play properly (stop unexpectedly). This is almost always caused by old or damaged tapes. Check to ensure that there is nothing in the path of the tape, and that the tape is clean and in good condition. Material borrowed from the library may be transferred to a new tape when the condition is degraded.

This is either caused by the projector being set to the wrong tape format, or by using a PAL tape in an NTSC player. Imported tapes may use the PAL (european) standard which is not compatible with our VHS players. Check the projector menu to make sure the video format is set to NTSC and if you have a PAL tape, contact CRDC media services to have it transferred to NTSC format.

You may be using the incorrect remote. The projector remotes have a similar appearance. Make sure you are using either the Panasonic or Toshiba remote (as indicated on the front of the DVD player) and that the remote has working batteries. Spare batteries are located in the desk cabinet.

The DVD/VHS player may be set to the wrong audio mode. Since the classroom sound systems are monaural, you will have to make sure that the DVD/VHS player is set to SAP MONO as well. This can be done my pressing the ‘set up’ button on the DVD/VHS remote. Select ‘audio’ and then choose MONO from the list.

If you cannot physically connect the 15 pin VGA cable to your laptop, it is possible that you need an adapter or ‘dongle’ to change the connector type. This is a common problem with Apple laptops, which use DVI and other proprietary video connectors. Your laptop probably came with the required adapter. Consult your manual for details.

Ensure that the video cable (15 pin) is connected firmly to your laptop, turn on the projector and set to Input 1 / RGB 1, and turn on your laptop LAST.

If this order is observed, the laptop will usually detect the external display and turn on the video output automatically. If not, you may have to manually enable video output. This procedure is documented in your laptop manual and varies from model to model. The video port can usually be activated two ways:

In the display control panel, on the ‘settings’ tab, click ‘advanced’. Depending on the driver being used, you should see a tab that will allow you to activate the different outputs.

To use the keyboard shortcut, hold down the ‘FN’ key, press the function key at the top of the keyboard that is labeled with ‘CRT/LCD’ or a small monitor icon. Depending on your laptop type, you may have to press more than once to get both displays to work simultaneously.

For Macintosh Laptops: Under OSX, a small display icon will appear at the top of the screen when an additional display is detected. Clicking on this icon will reveal a popup menu where the user can select extended or ‘mirror’ desktop. If this icon is not available, the output can be enabled through the display control panel.

Most laptops will automatically set up the connection if the data projector is turned on, connected, and set to the correct input BEFORE the laptop is turned on. If you are using a Macintosh laptop, the display can be enabled by putting your machine to sleep and waking it after the connections are made.

If you have made the connection and the video is still not visible on the data projector, go through the troubleshooting steps listed under the data projector section.

Any laptop connecting to the campus network must first be registered at the help desk and checked for current antivirus software. This process takes approximately two hours.

Most laptop network ports will have link and activity lights near the Ethernet port. If you do not get a solid ‘link’ light, that is an indication that the connection is not secure, or that your Ethernet is disabled. Some laptops disable the Ethernet port when no connection is detected. To resolve this issue, make sure the cord is firmly connected and restart your computer.

If you see a solid ‘link’ light, but there is no flashing ‘activity’ light, it is possible that the Ethernet switch is unplugged or that the classroom has temporarily lost network connectivity. Test this by attempting to login to the classroom PC. In the event of a network outage a technician may be called to help you load your presentation material using removable media.

It is not uncommon for users to unplug network switches used in the classroom in order to free an outlet for laptop power cords. If you are properly connected and still don’t have network connectivity, check to make sure that all power bars are turned on and all visible power cords are plugged in.

Third party or Windows firewall software may interfere with access to certain network resources. If you are unsure how to configure your firewall please contact the help desk for assistance. Although it is not advisable, you can temporarily disable your firewall if necessary.

Make sure you are connecting to the network SSID = Guest @ UofL.

Most laptops feature the capability to turn on and off wireless networking with a keyboard shortcut or a desktop icon. Note that the campus network uses the Wi-Fi / 802.11 a/b/g standards, and that Bluetooth radios are not capable of connecting to these network types. Check your laptop documentation to confirm how to operate your specific network card.

Third party or Windows firewall software may interfere with access to certain network resources. If you are unsure how to configure your firewall please contact the help desk for assistance. Although it is not advisable, you can temporarily disable your firewall if necessary.

Make sure that the 3.5mm audio connector is plugged in securely to the headphone jack on your laptop (instead of the microphone or line input ports – a common mistake).

Your laptop may have both hardware and software volume controls that will both need to be turned up. Do not turn these volumes to the maximum or they will likely cause distortion. 2/3’s volume is usually best. The hardware volume may consist of buttons or a dial on the edge of your laptop near the headphone jack.

In rooms with audio amplifiers, turn on the black amplifier box and set the volume dials to about 1/3 volume. If there is no audio amplifier, set the projector volume to about ½ the maximum level. Make sure that the mute function is not enabled.

In your laptop volume control panel set both the MASTER and WaveOut volumes to a reasonable level. If you are using CD audio, Midi Synthesis, or another audio type, turn up these volumes as well. Make sure that none of the required channels has its mute function enabled.

In your media player application (Windows media player, Quicktime, Realplayer…), make sure the volume adjustment is turned up, and that the mute function is not enabled.

If you still can’t hear any audio, unplug the 3.5mm headphone jack from your laptop to see if you get audio output from the laptop’s built-in speakers.

If you get sound from your internal speakers, the problem must be with the laptop connector, cord, or amplifier. Check to ensure that the cable is secure and that the amplifier/projector volumes are turned up. Try alternate inputs on the amplifier in case they are improperly labeled.

If not, the problem must be in your laptop sound, volume, or application settings. Try playing some different content or using a different media player application.

Some laptops do not have the capability to support two displays simultaneously. This is not usually the case with display ‘mirroring’ but more often when two distinct desktops are in use (thereby doubling the amount of video memory required). Consult your laptop manual to determine if your machine has this limitation.

If you used a keystroke shortcut to turn on the external video port, repeat this keystroke a couple times (waiting two to three seconds between attempts) to get the image on both screens. You may see an onscreen display appear that shows the current mode and other display options.

If you used the display control panel to turn on the external video port, you should see additional options to allow both displays to appear simultaneously. Older Intel, and NeoMagic video chipsets are notorious for not supporting simultaneous dual display modes. If this is the case, you will have to view only one screen at a time.

Some laptops are not equipped with a standard D-Sub VGA connector. If this is the case, you will need an adapter to display your desktop on the data projector. Laptops that only have S-Video outputs can not be connected to the preinstalled data projectors on campus (unless they come with adapters for composite video).

Laptops with composite video ports can be easily plugged into the front inputs of the VCR/DVD player and then the Input 3 / Video port on the projector can be used. Note that the VCR/DVD player must be set to LINE 2 using the remote to get the image to pass through to the projector. The image quality from a composite output will be much lower then a normal VGA display so the resolution should be set to 1024X768 or lower if possible.

Laptops with DVI connectors can be made to work with analog VGA adapters that usually ship with the unit. If your laptop has a proprietary connector (Acer TravelMate, Apple iBook…) you will have to connect an adapter which may not have been included with the unit. Contact your hardware manufacturer to obtain one.

Your video card can function in both ‘dual desktop’ and ‘mirrored desktop’ modes. This allows you to use the extra video output for additional desktop space when not hooked to a projector. This setting is the default for both Macintosh and Windows based computers. You can change this setting in the Display control panel on either platform:

For Windows: Click on the display marked ‘2’. Un-check the box labeled ‘Extend my windows desktop to this monitor’. Then use the keyboard shortcut to enable display mirroring or restart the laptop after connecting it to the projector.

For Mac OS: Click on ‘detect displays” to refresh the status of the display control panel. Click the ‘mirror displays’ check box and then click ‘Ok’ to apply the changes.

If you prefer to keep your speaker notes on the laptop’s internal screen and export the slides to the projector, you can leave multiple desktop enabled and turn on this feature in PowerPoint. It is located in the drop-down menu under ‘Slide Show Properties’.

First, check to ensure that the amplifier box is turned on (small power button on the right side of the unit). When power is available a red light should appear. If the power switch is on and the light does not illuminate, check the power cable and make sure all power bars are plugged in and turned on.

If the room does not have a separate audio amplifier, turn up the volume and disable the mute function on the data projector.

If you are using a computer, make sure none of the audio channels are muted and turn up the master volume to approximately 2/3 level. Turn up the volume in the media player application that you are using and disable the mute feature (when applicable).

For laptops: check to ensure that the 3.5mm audio plug is in the ‘headphone/line out’ jack and not in the microphone or ‘line in’ jack.

For desktop: check to ensure that the audio cable is plugged into back of the PC in the middle (green) audio plug. Also make sure that there are no cables plugged into the front audio jacks as this will disable the rear output.

If you are playing an audio CD, try using the DVD player instead. It will produce better audio quality then the PC. If you must use the PC, disable ‘digital audio extraction’ in the windows media player options.

Laptop/Desktop PC: Make sure that that the Windows or Mac volume control is not turned up too high. If you are listening to webcast audio it may increase and decrease in quality as bandwidth changes. Scratched DVDs and audio CDs can have clicking sounds in the background if the damage is severe.

VHS: If you are using an old VHS tape it is normal for the audio to be dull sounding or to have slight flutter in the volume level. Tapes recorded using the PAL standard will have static and poor video quality – the VHS players on campus do not support this format. If there is a flickering noise, try adjusting the tracking control on the VCR remote.

VHS/DVD: Make sure the amplifier volume is not turned up too loud and that the bass and treble controls are not too high. On the setup screen, set the audio type to SAP MONO for optimal sound quality.

When the amplifier is turned on it may pick up ground noise from devices that are connected but not turned on. For example, if the microphone is not in use, turn down the volume control to prevent it from adding noise to the system.

If the laptop audio connector is in contact with a metal surface it might introduce noise to the system. Move the connector away from any conductive surface and power cables.

If you are using a laptop computer, try disconnecting the AC adapter as the battery charging process can create ground noise that would be audible over the speaker system.

If you are using a VHS tape, try adjusting the tracking to eliminate any noise that might be generated by the edge of the tape.

The most common reason for the microphone to fail is low batteries.

If the microphone has a green light, check to make sure the mute switch is not enabled. Also make sure the amplifier is turned on and the microphone volume is turned up. Make sure the receiver unit is turned on and plugged in. If the microphone still doesn’t work it may require servicing.

If not then, the batteries will need to be replaced. Spare batteries are located in the desk cabinet. When using the spare batteries, please notify the help desk to arrange for replacement.