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Complete Screen
Five-wire resistive screen
Five-wire resistive screen covered with grass-roots on the X, Y two directions of the voltage field added to the transparent conductive layer with a layer of ITO, the outermost layer of gold conductive layer of nickel (nickel deposit conductive layer: five-wire resistive touch screen of the outer conductive scalability is a good layer of nickel gold coating materials, conductive outer layer due to the frequent touch, use a good ductility nickel deposit materials in order to extend the service life.) is only used as a pure conductor, when touched, with the sub- contact point when the detection axis X axis and Y measured voltage value method the location of touch points. Inner layer of ITO to be four-lead, the outer one, a total of 5 leads.
Capacitance screen
Capacitance screen coated with a transparent conductive layer ITO, voltage connected to the four corners of the Ministry of scattered small-screen surface of DC, to form a uniform electric field, when the hands touch the body as a pole coupling capacitance, current from the screen, the other four corners together to form the coupling capacitor one pole, passed through the controller calculates the current touch position coordinates of the relative distance and touch.
Infrared Screen
IR touch screen is the use of X, Y direction to detect clouds and infrared matrix locate the user's touch. Infrared touch screen in front of the Touch Screen Monitors frame to install a circuit board, circuit board arranged on the screen edges and infrared receiver infrared emission control tubes, one to one to form if they had crossed the infrared matrix. Users touch the screen, the finger will be blocked if they had been the location of two infrared, which can determine the location of touch points on the screen. Any object can change the contact on the touch-infrared and implement a touch screen operation.
[Symptom]
A surface acoustic wave touch screen, touch monitor screen with your fingers does not work to complete the corresponding part of the operation.
[Fault analysis]
This phenomenon may be the acoustic wave touch screen in use for some time, reflective stripes around the top screen is dusty, use a soft cloth to wipe dry, and then power off, restart the computer and re-calibration. There may be reflective stripes acoustic screen was slightly damaged, if you encounter this situation will not be fully repaired.
If a capacitive touch screen can be run under the following circumstances the screen calibration procedure: (Start - Programs - Microtouch Touchware)
1) The first to complete the installation of driver software.
2) every time you change the display resolution or display mode.
3) every time you change the display after the display area.
4) Every time after adjusting the frequency of the controller.
5) Each time the cursor does not correspond to the time and touch points.
After calibration, the calibration data is stored in the controller's register, so after every time you start the system no longer need to calibrate the screen.
[Symptom]
Can not work a touch screen, touch any parts are not responding.
[Fault analysis]
First check the wiring for any loose the interface and then check the serial port and interrupt number is a conflict, if conflict resources should be adjusted to avoid conflict. Then check whether there is cracks in the surface of the touch screen and, if cracks should be replaced. Also need to check whether the touch screen surface dust, if so, with a soft cloth to clean. Check the control box on the observed light is working properly, the normal, the indicator light is green, and flashing.
If the above are part of the normal method for detecting the touch screen can be replaced, first replace the control box, and then replace the touch screen, and finally replace the host.
If the surface acoustic wave touch screen repair can be as follows:
1) may be the connection of the touch screen, one connection to the host keyboard port connection (port access from the keyboard touch screen operating voltage 5 V) is not connected, check the connection.
2) may be the touch screen driver installation process of the selected serial number and the actual touch screen is not connected to the serial numbers correspond, please uninstall the driver re-installation.
3) might be the host for the domestic original machine, the installed operating system is OEM version, the factory adjusted, resulting in the non-standard serial communication with the touch screen driver is not compatible, if possible, please format the hard disk, install the system after the touch screen driver .
4) may be too low, the touch screen driver version, please install the latest drivers.
5) whether the host device and the serial port resource conflict check and adjust the various hardware devices. For example, some network cards installed default IRQ is 3, the IRQ conflict with COM2, then the network card should switch to free the unused IRQ IRQ .
If it is resistive touch screen repair can be as follows:
1) Check the connection is connected touch-screen pair, one of the connecting host keyboard port connection (port access from the keyboard touch screen operating voltage 5 V) are not connected, check the connection.
2) Observe the light touch-screen control box, and if red is not bright or that the control box has been broken, replace it.
3) If the above are not recognized, please state, remove the drive and restart the computer touch screen to re-install the driver, or replace the newer and higher version of the driver.
4) whether the host device and the serial port resource conflict check and adjust the various hardware devices. For example, some network cards installed default IRQ is 3, the IRQ conflict with COM2, then the network card should switch to free the unused IRQ IRQ . may be the computer's motherboard and touch screen control boxes are not compatible, replace the system or motherboard.
5) If the touch screen using a longer period of time (3-4 years) found that some regions can not touch the touch screen, touch screen may be damaged, replace the touch screen.
About the Author
This phenomenon may be the acoustic wave Touch Screen in use for some time, reflective stripes around the top screen is dusty, use a soft cloth to wipe dry, and then power off, restart the computer and re-calibration. There may be reflective stripes acoustic screen was slightly damaged, if you encounter this situation will not be fully repaired.
How can I change the screen size to include emails that are not complete when reading left to right?
Press ctrl button and move mouse wheel.
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