The reasons why the scanner cannot scan the barcode
Fault one: the scanner cannot scan the barcode
Solution: In this case, you must first understand whether you can scan the barcode without uploading it, or turn on the laser but do not scan the barcode.
You can scan the barcode but not upload it to the computer because the computer and the scanner are not connected. If it is wired, check the port and line. If it is not
If it is online, reset the paired receiver. There are also several possible reasons:
1. The function of reading this barcode is not turned on;
2. The bar code does not meet the specifications, for example, the required blank space is missing, the contrast between the bar and the space is too low, and the ratio of the width and the width of the bar and the space is not suitable;
3. Direct sunlight, the photosensitive device enters the saturation region;
4. The surface of the bar code is covered with a transparent material, the reflectance is too high. Although the bar code can be seen by the eyes, the collector has strict reading conditions.
5, hardware failure, contact your dealer for repair.
Fault two: LED is off, no beep, no laser
Solution: The scanning gun may not be powered on, the scanning gun is not powered on, or the data cable interface is loose, and the contact is bad. Check the scanning gun
The computer power supply is normal, and the data cable is connected to the scanner again.
Fault three: No data transmission after reading the serial port cable
Solution: It may not be set to serial port mode or the communication protocol is wrong. To set the scanning serial port mode to serial port mode, restart
Set to positive
Correct communication protocol.
Fault four: The computer displays an unrecognized USB device when it freezes after scanning a barcode or uses a USB cable
Solution: Poor cable may cause data to fail to transfer and crash and USB device may be defective. Need to find a dealer to buy replacement wires.
Fault five: Scanning is normal, keyboard cannot be used
Solution: The IC inside the scanning gun may be badly burned out. Need to be returned to the manufacturer for repair.
Fault six: the laser is always on
Solution: It is possible to scan the manual to set the bar code to be always on. Need to restore factory settings and return to the manufacturer for repair.
Fault seven: No sound after power on, no light when pressing the button
Solution: The scanner may not be powered on, the scanner is not powered on, or the data cable interface is loose, and the contact is poor. Need to check scan
Cable to ensure that the computer power supply is normal, reconnect the data cable to the scanner again.
Fault eight: garbled data output using serial port
Solution: The scanner may be a non-standard serial scanner. You need to check whether the scanner is the corresponding interface.
Fault nine: The Bluetooth scanner cannot connect to the computer normally
Solution: It may be that the Bluetooth does not match, you need to insert the Bluetooth receiver provided by the manufacturer and check the connection of the corresponding system according to the instruction
Way to make a connection.