Some customers will inevitably have some problems when they use LCD displays. These problems can be more or less solved by self-detection. Today, I will give you an analysis of how to detect and find the fault of LCD.
LCD display includes four parts: computer control part, display drive matrix, LCD display array and power supply.
Among them, there are many problems:
1. Interface problem. Phenomenon: Computer information can not be displayed, check the cable;
2. Power supply problem. LCD display panel uses low voltage and high current power supply, which is not different from ordinary DC power supply.
3. Driving problem. Each row or column is not displayed, that is, corresponding to the driver circuit (chip) problem, can be replaced;
4. Display problems. Long-term use of LCD display may damage aging, maintenance and replacement can be.
LCD Display Common Fault Handling Flow-Diagnosis Flow:
1. Determine whether your LCD screen is synchronous or asynchronous; the display of synchronous display depends on the settings of the display, and the asynchronous display does not depend on the settings of the display;
2. Determine whether your LCD screen is a partial display or a full-screen display.
Abnormal local display can eliminate communication problems. Generally, it can be determined that the hardware of the display screen is out of order. You should contact us immediately in order to prevent the malfunction from expanding.
There are many possible reasons for the abnormal display of the whole screen:
For synchronous LCD display, you should confirm whether the display settings have changed, whether the communication is normal, whether the transmission is normal, and then whether the reception is normal.
For the asynchronous LCD screen, first of all, we should confirm whether the parameters of the display screen: hardware address, width, height, IP have changed, if these parameters are correct, then test whether the communication is normal, and finally determine whether the LCD control is normal.
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