“TROUBLESHOOTING OF A PROJECTOR 1. No Image is Projected or a “No Signal” message is displayed: 1.1 Check that the projector is plugged in to a mains socket and that the socket is switched on. Check that the projector itself is switched on and indicator lights are showing on the projector. 1.2 Check that the equipment is correctly cabled up. See the Other Useful Articles links for how to connect your interactive whiteboard, projector and computer. 1.3 Check that the computer or video/DVD player is switched on. 1.4 If using a laptop, you may need to change the laptop display settings. Press the Function key (Fn) and the relevant F key for the display at the same time. The F key you need is often F5 or F8, but may be another which says 'CRT/LCD', or shows a picture or rectangle indicating a monitor. This will toggle between 3 different display settings - laptop only, Projector only, laptop and projector. After pressing the keys at the same time (e.g. Fn+F5) it may take a couple of seconds for the image to appear on the projector. If the laptop screen goes black when the image has been sent to the projector only, but does not appear from the projector, you should leave the laptop with the image sent to the projector only and check the 'source' as described below.” 1.5 Check the correct 'source' is selected on the projector. On the projector or the projector remote you can often press the 'source' button to toggle between different sources. The source buttons may be labelled 'Computer 1/2' or 'S-Video/Video'. For a computer you will need the source option called 'Computer', 'Computer 1' or 'Computer 2' depending on which port on the projector your computer is connected. For a Video/DVD player you will need the S-Video option, and for a video camera the Video option. There will be a Source button on the projector, or Computer/Video button on the remote control to do this. 1.6 If using a computer, reboot it, because some computers need the projector to be switched on and connected before the computer is started. 1.7 Check that the 'A/V Mute' mode is not turned on. Press the 'A/V Mute' button on the projector remote to toggle the mute on and off. 1.8 If using a switch box, check that the switch box has a computer selected that is powered on. For information about VGA switch boxes see the Other Useful Articles below. 1.9 Check the projector indicator lights (LEDs). Projector operating temperature are normally between 5 and 35 degrees Celsius. Some projectors may display a temperature warning light to indicate a temperature fault. Ensure that air filters and vents are clear and clean. Allow the projector to cool before attempting to operate again. 1.10 Check whether the projector can display its own menu on to the screen/whiteboard. If the projector does display the menu when the menu button on the projector and remote is pressed, then the problem is likely to reside with the source or cabling. 1.11 If possible try a different VGA cable from the computer to the projector. If a faceplate is installed or you are using a switch or a splitter you should try different cables between each of these. 1.12 If the projector fan turns on and turns off again after a few seconds when turning the projector on, it is possible that the bulb has blown. 2. Incorrect Image is Projected: 2.1 Check that the correct computer is connected to the projector, or faceplate. 2.2 If using a switch box, check that the switch box has the correct computer selected. For information about VGA switch boxes see the Other Useful Articles below. 2.3 Check the correct 'source' is selected on the projector, as described above. 3. The Image Is Out Of Focus or not clear: 3.1 Check that the projector lens cover has been removed. 3.2 Check the projector focus has been adjusted correctly. 3.3 Make sure the projector is at least 1.4m from the screen. 3.4 With the projector off, check the projection lens to see if it requires cleaning. If required, use a soft dry cloth to clean the lens. Do not use a damp cloth or cleaning fluid. Safety Note: Never look directly into the lens when the bulb is on. 3.5 If condensation has built up in the lens (as a result of moving between hot and cold rooms), leave the projector on and wait (approximately 2 hours) until the condensation disappears. 3.6 Try changing the computer resolution. It is best practice to match your computer or other input with the native resolution of your projector. Data projectors have a single true resolution but may accommodate other resolutions using in-built compression or expansion technology. An SVGA projector has a resolution of 800 x 600 pixels and will work best with a computer with a resolution set to 800 x 600. An XGA projector has a resolution of 1024 x 768 pixels and will work best with a computer with a resolution set to 1024 x 768. Note: The higher the projector resolution, the crisper the projected image will be (subject to distance). For fine line drawings or spreadsheets, an XGA projector is advised. 4. The Image Is Too Bright/Dim: 4.1 Increase/decrease the brightness and contrast settings on the projector menu. 4.2 Ensure that there is no direct light (sunlight or overhead lighting) shining on the projected screen. 4.3 Unlike a domestic bulb, a projector bulb will fade over time. The bulb may be due for replacement. 5. The Image Colours are not Right: 5.1 Check that the VGA cables are attached securely, and that two screw-in connectors are tightened to secure the cables. 5.2 Check the cables are not damaged or the pin connectors bent. A bent pin can result in one colour not being displayed properly, for example red may appear brown. 5.3 If possible try a different VGA cable from the computer to the projector. If a faceplate is installed or you are using a switch or a splitter you should try different cables between each of these. If there is a faulty cable the image can appear tinted, for example pinkish. 5.4 Check the projector image contrast, brightness, colour mode, colour intensity and tint options are adjusted correctly. 5.5 Check the projector settings with the projector manual. For example, the wrong 'Input Signal' menu command on an Epson projector can make the images appear purplish or greenish. 6. The Image Is Left/Right or Top/Bottom Reversed: 6.1. Check the projector menu settings for Ceiling or Rear Projection features. 6.2 Check the projector's display settings or Keystone settings to align the image correctly on the screen. 7. The Image Does Not Align Correctly Or Is Distorted: From the projector menu, perform Keystone correction. 8. Incomplete Image projected: Check the screen resolution settings on the computer. Most projectors support SVGA (800×600) or XGA (1024×768). If the screen resolution settings on the Computer are higher than this, the sides of the image may not be displayed. 9. Flashing lights on the projector:

There will be Power and Status indicator lights (LEDs) on the projector which can help narrow down problems. For details on the significance of these lights, please see your projector manual. Best Practice and Maintenance Advice 1. Always switch off your projector using the standby/power button on the remote control or projector unit. This process allows the cooling fan to continue running for a period of time to properly cool down the equipment. Do not disconnect the projector from the mains power supply while the cooling fan is still in operation. 2. If required, use a soft dry cloth to clean the lens. Do not use a damp cloth or cleaning fluid. 3. Clean the projector air filters at regular intervals. Most projector manufacturers recommend they are cleaned monthly. 4. Do not block or place any items near the air vents.

basic_projector_troubleshooting_steps.txt · Last modified: 2015/10/22 15:55 by kimemia
 
Recent changes RSS feed Donate Powered by PHP Valid XHTML 1.0 Valid CSS Driven by DokuWiki