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Payment module issue
Printer is not working.
Make sure there is enough receipt paper in the printer.
Make sure the receipt paper is properly inserted into the printer.
Make sure the cover of the receipt paper is closed.
Check the power and signal cable connection status, and restart the product.
Press the Self Test button to check if the printer works. It is not the problem of the printer if
it works.
QR code/bar code sensor
Check the power and signal cable connection status, and restart the product.
If the recognition results are poor, clean the sensor with a smooth, damp cloth, and then
wipe out the moisture and try again.
The printer is not working.
COM port operation is abnormal.
Check the Baud-rate settings and the port numbers of the device and your product.
Check the USB Driver on the
Device Manager
menu.
• Check if
USB-Serial Adapter
exists under the
Device Manager
–
Universal Serial Buscontrollers
menu.
• If
USB-Serial Adapter
exists, follow the below instructions to update the driver.
1
2
3
4
Right-click the device to select
Update Driver
.
Windows issues
How can I uninstall an application?
1
Select the Windows START button (
) →
→
Apps
→
Apps & features
.
2
On the list, select an app to delete, and then select
Uninstall.
