7 common problems and solutions during the use of scanning guns

1. The QR code scanner remains on continuously when not in use.

Reason analysis: Accidentally set the light to always on.

Solution: Restore to factory settings and turn off the constant light.

2. When the scanner scans, the LED light does not light up and there is no response?

Reason analysis: It may be due to the power supply of the QR code scanner not being connected, or the interface of the data cable not being plugged in tightly, resulting in poor contact.

Solution: First, check if the power supply of the QR code scanner is connected. If it is already connected, check if the data cable interface is loose. It is best to reconnect the data cable to the QR code scanner to ensure normal power on use.

3. After the QR code scanner is connected, the LED keeps flashing and there is no sound, and it cannot scan?

Cause analysis: It may be an internal problem with the scanner, usually due to poor IC contact.

Solution: If this situation occurs, please seek repair from a dealer or manufacturer.

4. The scanning gun starts normally and a laser appears, but it does not read the code?

Cause analysis: There are many reasons for this problem, the first one may be that the barcode system has been closed; The second possibility is that the barcode has been damaged; The third possibility is that there is a quality issue with the barcode, which means that the barcode printing does not meet the standards; The fourth type is whether the dustproof lens is clean; The fifth possibility is that the hardware or motherboard of the scanner has malfunctioned.

Solution: First, you can enable the corresponding barcode system, and then check if the barcode is damaged.

5. The serial port cable of the scanner is already connected, but there is no data transmission when reading the code?

Reason analysis: It may be due to the lack of serial port mode for the scanner,

Solution: Refer to the manual and set the scanner to serial mode.

6. When the scanning gun scans the barcode, the buzzing sound is normal but there is no data transmission?

Reason analysis: It may be due to incorrect scanning settings of the scanner, resulting in no data transmission from the scanner. Another reason may be a malfunction in the transmission cable, leading to no data transmission.

Solution: You can restore the factory settings, refer to the manual to reset the QR code scanner, and ensure that the corresponding data cable settings are correct.

7. Why can some barcodes be scanned by a scanner, while others cannot?

Reason analysis: The first possibility is that the barcode system does not meet the requirements of the QR code scanner. The second possibility is that the scanner did not activate the barcode. The third possibility is that the barcode is damaged. The fourth possibility is hardware failure.

Solution: Restore the factory settings, activate the barcode system according to the instructions, or replace the barcode.