Instructions for fixing POS Thermal Receipt Printer Not Printing
POS thermal receipt printers allow you to enhance the functionality of your existing point-of-sale hardware. These devices add the ability to display pricing to your customers or create a printed receipt for each transaction.
While there are specific fixes for specific models of printers, many times a printing issue can be solved with a simple fix. If you have trouble printing receipts, use the following tips for fix POS printer.
- Re-start the POS receipt printer app.
- Close any apps that may be using the USB ports or accessing the printer via the network.
- Make sure the printer is selected as the default operating system printer.
- If you are on a desktop OS, you may need to upgrade Java from java.com.
- If you are on a desktop OS, make sure the proper paper size is set. The most common is 28mmx89mm Thermal Address Labels for DYMO.
- If you have a firewall installed, it may be interfering with printer operation. Try disabling it temporarily and printing again. If that works, you need to create a rule for the printer to bypass the firewall.
Wires / Connections
- Turn off the computer or device the printer is connected to, the router if used, and the printer. Now power on the router, printer, and computer / device in that order.
- While devices are off check if all the cables are plugged in and stable. It’s common for Thermal Receipt Printer cables to get kicked around if under the register counter near feet!
- Check for any frayed cables (of course, while unplugged).
- If you moved the printer, make sure you are using the same ethernet / USB port as before.
- Switch to a different ethernet / USB port and reconfigure driver for that new port if necessary.
- Have another laptop computer / device? Try setting up the printer with that instead. This is a great way to verify if the printer is not the problem.
- Check the printer’s paper. Look for a jam or in many cases what we see, receipt rolls inserted upside down.
- Look at the status lights. A blinking light of any kind usually means something is wrong. Reference your manufacturers manual for the exact reason for the blinking.
- If other methods don’t work, try a hard reset on the printer. Usually this is done by pressing or holding a tiny reset button on the printer while you reset it, but check the manual for you printer to find out how.