Beijialai touch screen maintenance 4pp065 0571-X74F

The maintenance faults of baccalais touch screen include ： Do not start 、 Black screen 、 Blue screen 、 The LCD screen is damaged 、 Motherboard burned out 、 Touch failure 、 The statement 、 The card machine 、 The image has interference marks 、 Burning element 、 Image jitter 、 No response to the key 、 Power board failure 、 No backlight 、 Restart again and again 、 Individual areas cannot be touched 、 Touch offset 、 High voltage board failure, etc .

No response processing method of touch screen ： Check whether each wiring interface is loose , Then check whether the serial port and stop number conflict , If there is any conflict , Resources should be adjusted , Avoid conflict . Then check whether there are cracks on the surface of the contact screen , If there is any crack, it shall be replaced in time . It is also necessary to check whether there is dirt on the surface of the contact screen , If you have any , Remove with a soft cloth . Investigate and check whether the indicator light on the control box works normally , Normal , The light is green , And shine .

After power on, the screen does not display the correction process ： Touch the screen with your hand , The buzzer doesn't respond , Clarify that the program is not working properly . Measure several groups of voltages with a multimeter 3.3 v 、5.1 v 、12 The voltage is normal . According to the user , After the user found the fault of the contact screen, he tried to repair , During power on , There was a normal situation , But it won't work if you turn it on again after power failure . Analysis of faulty soldering at a pin of the chip , Make the bus fault , Then the program can't run . Then the hot-air gun is used to heat the welding leg of the dense foot chip , At the same time, press the chip with tweezers , Make the welding leg and tin fuse from the beginning .

How to deal with the non reaction of touch screen after use ： Some applications , Due to poor grounding function , Because the shell of the control box is covered with a lot of static electricity , Then affect the operation electric field inside the control box , Cause the contact to fail gradually . At this time, use a wire to ground the control box shell , Just start from scratch .

In case of capacitive touch screen, the screen calibration program can be run under the following conditions ：

1. Complete the installation of driver software at one time . The second is to try to change the resolution or display mode of the display every time ,

2. The next step is to change the display area every time .

3. Then try to adjust the frequency of the controller every time , Check that the cursor and touch point cannot correspond each time .

4. After calibration , The calibrated data is stored in the register of the controller , This eliminates the need to calibrate the screen every time the system is started .

During the maintenance of Baccarat touch screen, it is recommended to check whether each wiring interface is loose , Then check whether the serial port and interrupt number conflict , In case of conflict , Resources should be adjusted , Avoid conflict . Then check whether there are cracks on the surface of the touch screen , If there is any crack, it shall be replaced in time . It is also necessary to check whether there is dust on the surface of the touch screen , If you have any . Observe and check whether the indicator light on the control box works normally , Normal , The light is green , And flashing . The maintenance of Beijialai touch screen is a complicated process , And it will involve the problems of various components , This is for the operator , The key is whether you can find the problem .