The whole screen does not light. Causes: 1. The main controller does not have +5v; 2. The whole screen does not have AC power; 3. The computer settings do not analyze the fault: 1. The power supply is bad, replace the power supply; 2. Check the power supply circuit; 3. Reset .
The communication is not normal. Causes: 1. Whether the software is set correctly; 2. Whether the communication line is connected; 3. The MAX323 has fault analysis and processing: 1. Restart the computer and re-switch the display. 2. Re-set it. 3. Measure with a digital meter. 4. Replace this MAX232.
The information is correct, but the font is missing the stroke. The cause of the error is that the size of the information and the size of the screen are inconsistent.
Fault analysis processing: Re-do information, the size should be set to match the size of the screen.
The communication is not normal. Causes: 1. Whether the software is set correctly; 2. Whether the communication line is connected; 3. The MAX323 has fault analysis and processing: 1. Restart the computer and re-switch the display. 2. Re-set it. 3. Measure with a digital meter. 4. Replace this MAX232.
The information is correct, but the font is missing the stroke. The cause of the error is that the size of the information and the size of the screen are inconsistent.
Fault analysis processing: Re-do information, the size should be set to match the size of the screen.
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