In life, we often see the staff use scanners to scan barcodes in supermarkets and express delivery. Using scanners can greatly improve efficiency, but scanners are not foolproof. Sometimes scanners cannot scan barcodes. What is the reason? How can we solve it?
    Why can't the scanner scan the barcode? When your scanner is scanning, you can't scan it, or you can't scan the barcode to your computer, you may try the following solutions.
The first case: there is a line code scanner that has light but cannot scan
possible reason:
1) The PS/2 scanner is connected to the mouse port;
2) The PS/2 scanner is correctly connected to the keyboard port, but the scanner is not connected to the PS/2 keyboard, and the scanner is not tuned to the PS/2 keyboard mode;
3) The PS/2 scanner is connected to the USB to PS/2 conversion line, but the chip of the conversion line is not good, often cannot be scanned or wrongly coded;
4) The cursor is not in the scanning area during scanning, and the computer occasionally pops up the window to change the position of the cursor during scanning;
5) The input method is not turned off during scanning, which may result in undetectable or wrong code;
6) The scanning code system is not turned on, and all the code switches can be turned on;
7) The bar code does not conform to the specification, for example, the necessary blank area is missing, the contrast between the bar and the space is too low, and the width and width of the bar and the space are not suitable;
8) The surface of the barcode is covered with a transparent material, and the degree of reflection is too high. Although the eye can see the barcode, the scanner cannot be read;
9) The scanned barcode is incomplete or severely damaged;
10) Direct sunlight or too strong light to make the scanner unable to scan;
11) There is a problem with the interface transfer, the interface may be broken, or the line of the scanner may be broken;
12) The setting of the wired scanner is disordered. Open the scanner's manual to scan the factory settings barcode, usually “Restore Factory Settingsâ€, “SETALL DEFAULTâ€, “Initial Settingsâ€, “Restore Defaultsâ€, etc.
13) The serial port has not set the serial port number and baud rate;
14) When scanning the barcode, the distance is too far or too close, and the angle is too large;
15) Scanning very fine barcodes. Generally, the scanning accuracy of wired scanners is 5 mil or more. If your barcode is less than 5 MIL, please purchase a 3 MIL wired scanner.
The second case: the scanner has no light
possible reason:
1) The line of the scanner is not connected;
2) The line of the scanner is not connected to the computer;
3) The power supply of the computer is insufficient, resulting in the scanner not working;
4) Is the USB port and PS/ port of the computer normal?
5) The line of the scanner is broken;
6) The bald head of the scanner or the motherboard is broken.
    If you can't scan the barcode on your computer, etc., check the scanner in turn according to the above steps, and then eliminate it until you find the problem. If you still can't solve your scanner problem, you may need to contact the supplier to resolve it.
    The above is a variety of situations and solutions that may occur in the "scanning gun can not scan out the bar code", hoping to solve the problems you encounter.
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