Projector connection notebook Frequently asked questions and solutions

In training, meeting often need to connect the projector to the notebook, so that the projector to demonstrate the contents of the notebook, the projector connected to the notebook only a VGA cable can be, but many times we will encounter some big and small problems, often there will be projections can not be projected notebook screen or projection screen distortion of the failure. The reason why the projector is not working is often because we neglect some small details, the following is to explain the cause of the projector failure and solutions, so that we can encounter similar failures in the future, to take a few detours.

"Reference": http://www.skyln.net/tech/wgzj/875.html

first, understand the interface of the projector

The interface of the projector can be broadly divided into two types: analog signal interface and digital signal interface, some models also provide audio input, output terminal. The analog signal interface mainly includes: 15-pin VGA interface, video interface, S-video interface, etc. Digital signal interface mainly includes: USB interface, IEEE1394 interface, DVI interface and HDMI interface, etc.

Projector Connection notebook Use the most interface is VGA and DVI interface, but not all the DVI interface projector is equipped, generally in some middle-grade projector only appeared DVI digital interface, and near Ishila some new products also equipped with HDMI interface, HDMI interface is on the basis of the DVI interface, Added digital audio input to become a dedicated multimedia information interface, and support 1920*1080 DPI high-definition digital signal, so HDMI interface more than the current high-end home projector, and some high-end multimedia business projector also equipped with HDMI interface.

Note: The projector interface has in and out points, the user remember not to connect the notebook video connection to the VGA out, if the wrong signal port, so no matter how you set up, the projector will not work properly.

two, fn+f4 combination key

Many users connect the projector with the laptop, turn on the projector, but the projector can not display the notebook screen, which may be connected to the video projector and laptop is not activated, as long as the notebook's FN key, and then simultaneously press the corresponding function key identified as LCD/CRT or monitor icon, As shown in Figure Fn+f4 key to switch.

Third, note the notebook and projector resolution matching

Now the notebook is more widescreen, some with the widescreen notebook compatibility of the projector can not even adapt to the widescreen resolution, resulting in the projection screen blur phenomenon, the greater the resolution difference, the more obvious the extent of the screen blur.

When the FN+F4 can not be displayed after switching, may be the problem of the computer input resolution, at this time as long as the computer display resolution to adjust to the scope of the projector allowed, but also need to pay attention to the projector screen aspect ratio setting. Sometimes the projection screen although can display, but only shows a part of the computer image, this may also be the computer output resolution is too high, the user can properly reduce the computer resolution and then projection.

Four, the utilization of projector signal source set Exchange keys

At present, the majority of projectors can automatically identify the input signal source, and according to the source type of the different, automatically switch, automatically change the settings. However, in some cases, the projector is abnormal situation, or the projector connected to the notebook video line is loose and then connected, the projector will not automatically search the input source signal, so that the projector will not be displayed, at this time, we may wish to press the body or the remote control of the source search key manually set to change the input source signal of the projector.

V, VGA cable should not be too long

When the projector connected to the notebook, matching the resolution of the two, found that the projector put out of the screen will be lost signal, the projection effect of serious distortion, re-search the signal many times can not solve the problem, check the projector, laptop VGA connection interface also did not find broken needle phenomenon, This is most likely due to the long VGA connection, which causes the projection signal to decay.

Because when the length of the VGA line is more than 10 meters, the video signal will gradually fade with the length of the projector screen will appear distorted, so the VGA connection should not be too long, generally to control within 10 meters, the user of the home lifting projector also need to pay attention to this problem.

"Source of this article": Blue Sky Interconnection (http://www.skyln.net), reprint please indicate the source by the link form