1. The projector displays the wrong color (yellow or red), there are snowflakes, stripes, and even the signal is sometimes no, sometimes the display “not supported” how to do?
Insert the connector tightly at the link, loosen the hand slowly after the color is normal, do it several times until the color returns to normal. Because frequent use will inevitably loose. Bear in mind must not unplug joint below electrify circumstance, lest burn the interface of computer and projector.
2. If there is a display on the notebook and the projection shows “no signal” (or vice versa). How to solve it?
First of all, check whether the connection is correct, whether the button on the control board is clicked to the laptop, and then restart the computer and switch again. If there is a display on the projector but not on the computer, the solution is the same as above. If the above methods are not displayed, there may be a problem with computer Settings, and whether the function keys are disabled.
3. What if there is an image on the computer but not on the projector?
As above case, the first player suspended, click the right mouse button, move the cursor to and click properties, click Settings in the dialog, click the advanced in a picture, and then will pop up a dialog box, click on the “troubleshooting”, “hardware acceleration” scroll bar from “all” to “no” half drag, then open the player, This will display the image on both sides.
4. What can I do if there is no audio output when playing a video on the computer?
First check whether the audio line is connected correctly, check whether the voice on the computer is adjusted to the maximum, and then check whether the switch of the speaker below the chassis is open, two audio joints (one red one white) connected is not right (red to red, white dialogue, requirements in the same column), the voice is not the maximum. As long as one place is not connected correctly, it will result in sound output. Adjust the sound on the computer and stereo to the maximum, and then connect the line to the correct connection.
5. What happened to the sudden black screen of the projector? And there was a red light flashing and a red light going on!
That’s because the projector isn’t cooling enough. In this case, please turn off the projector and wait for five minutes before turning it on. If no signal is displayed, switch again. Again, no signal is displayed. Restart the computer once to continue using.
6. When using the projector to connect the DVD player, there will often be no signal problem and sound output problem after the video connector is connected. How to solve it?
DVD connection methods: connect the video on the chassis connector on the yellow interface of DVDS, audio line up in the red and white in the interface of DVDS (red to red, white dialogue), then the other end directly in stereo audio interface, connect the power cord, power will be on the projector, then click on the button on the control panel to the video button. Turn on the DVD player and use it. After use, the projector will be closed first, shut off the power supply after completion, and then unplug the connector.
If the projector still shows “no signal” after proper connection, the probable reason is that the video connector on the chassis is broken, please inform the management personnel to repair it in time. Another reason is that the connector is not tightly connected. Twist the video connector a few times until a signal appears.
If the sound does not output, check that the speaker is turned on and the volume is not maximum. Is the audio cable in good condition? The above methods still do not work, please contact the management personnel for timely maintenance.
7. The projector has information input, but no image
In the case of ensuring the correct output mode of the laptop, the above fault should first check whether the resolution and refresh frequency of the computer match the projector. As we know, the general hardware configuration of notebook computers is high, which can achieve higher resolution and refresh frequency. But if exceeds the projector’s maximum resolution and refresh frequency, will appear above phenomenon. The solution is very simple, through the computer display adapter to lower the value of these two parameters, the general resolution is not more than 600*800, refresh frequency between 60~75 Hertz, please refer to the projector instruction. In addition, it may be impossible to adjust the display adapter, please reinstall the original video card driver and then adjust.
8, projection image color bias
This problem is mainly caused by the VGA connection cable. Check whether the connection between VGA cable, computer and projector is tightened. If the problem persists, buy a better VGA cable and pay attention to the port type.
9. The projector cannot display or the display is incomplete
Symptom: The light bulb and cooling fan of the projector are working properly, but the picture in the computer is not projected, while the power cable and data signal cable of the projector are connected correctly. Or sometimes the projection is incomplete.
Reason: because the bulb of projector and radiating fan can work normally, eliminated the possibility of projector failure, and the computer can also be used normally, so also eliminate the possibility of computer failure. The problem, then, could be in the signal cable or the setup of the projector and computer.
Solution: most users are using laptop connected with the projector, so can’t projection may be caused by external video port is activated laptop, at this time as long as laptop Fn key pressed, and then press the logo for LCD/CRT at the same time corresponding function keys, or display icon below the F7 key to switch. When the switch is still unable to display, may be the computer input resolution of the problem, then as long as the computer display resolution and refresh rate adjustment to the projector allowed range, but also need to pay attention to the projector screen width ratio Settings.
Note: sometimes although the projection screen can be displayed, but only a part of the image on the computer, then may be caused by the computer output resolution is too high, can be appropriate to reduce the computer resolution for projection. If the problem is still after the above treatment, it may be that the LCD panel of the LCD projector has been damaged or the DMD chip in the DLP projector has been damaged, then it needs to be sent to professional maintenance.
10. the projector in use, suddenly automatic power off, after a while boot and restore, what is going on?
It is generally caused by overheating in the use of the machine. Overheating of the machine started the thermal protection circuit in the projector, resulting in power failure. In order to make the projector work normally and prevent the temperature of the machine from being too high, do not block or cover the radiator vents on the back and bottom of the projector.
11. The output image of the projector is unstable with fringe fluctuations
Because the projector power signal and signal source power signal are not coincident. Projector and signal source equipment power cord plug in the same power supply terminal board, can be solved.
12. Projection image ghosting
Most cases are caused by poor cable performance. Replace the signal cable (pay attention to the matching problem with the equipment interface).
13. maintenance of the projector, how to clean the ventilation filter
In order to ensure the normal work of the projector, regular inspection and maintenance is essential. Cleaning up the ventilation filter is one of the important work. If the projector ventilation filter is blocked by dust, it will affect the ventilation inside the projector and cause the projector to overheat and damage the machine. Make sure the ventilation filter is properly covered at all times. Clean the projector ventilation filter every 50 hours.
14. Irregular spots appear on the projection screen after the projector has been used for a period of time
After the projector is used for a long time, dust will be sucked into the housing, which is manifested as irregular (usually red) spots on the projected picture. In order to ensure the normal operation of the machine, it is necessary to clean and vacuum the machine regularly by professionals, and the spots will disappear.
15. Vertical lines or irregular curves appear in the projected image
Adjust the brightness of the image. Check the projector lens to see if it needs cleaning. Adjust sync and trace Settings on the projector.
Post time: Jan-12-2022
