The Reason Why The Scanner Cannot Scan The Barcode

- Mar 31, 2020-

The reasons why the scanner cannot scan the barcode



zebra 2d barcode scanner


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.

Cannot read

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

Wire, ensure

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.