Zebra QLn420 Repair Services

Mercom Step by Step Repair Process

1. Customer creates an RMA in our RMA portal for one or more devices, and ships device(s) to Mercom.

2. On receipt of devices Mercom checks them into our Repair System and updates the RMA portal so that the customer can track the progress. Any discrepancies between the RMA and what we actually receive is passed onto the customer.

3. The devices move to a Repair Technicians bench where they load our software and test the printer. Any defective items are replaced and the printer is checked for full functionality. All repair details are recorded in our Repair System so that we have a complete history of the device.

4. After repair the printer moves to QA where the printer is tested again for functionality. If any defects are found, then it is sent back to a Repair Technician for re-work.

5. After passing QA devices moves to our Shipping Department where they are cleaned, packed and shipped back to the customer. The RMA portal is updated showing that the repaired device has shipped back to the customer and the tracking number is recorded.

Typical turnaround time (TAT) is 5 to 7 days, but we will notify the customer if any delays occur.

Common Zebra QLn420 Issues

One common issue that users can report with the Zebra QLn420 is lack of wifi. If a printer won’t connect to wifi then it can be just an issue with the printer settings, or something more serious. These printers have an internal antenna, which can come loose or fail, particularly in rugged environments. If checking the printer settings doesn’t fix the issue then most likely the printer needs to be sent off for repair.


Sometimes people run into trouble with software issues, the firmware can get corrupted. Also, the printhead will need to be replaced at some point in the life of the printer. Poor print quality is a sign of printhead problems.


The QN4 series of printers is very durable, but are often used in harsh environments and are often dropped or damaged. In these cases the printer may well need to be repaired, but the cost is normally very cost effective.

Mercom's Industry-Leading Turnaround Times and Repair Warranty

The experts at Mercom understand how important equipment like the Zebra QLn420 is to your business. Every hour that your printer is out of action is an hour that your productivity drops and you’re not keeping your customers happy.


That's why we've always made it a priority to offer industry-leading repair times. We average repair turn-around times of five to seven business days, and we also offer maintenance contracts with guaranteed three or five days turnaround.


All of our repairs, including Zebra QLn420 repairs, come with a full six-month warranty. This is longer than most manufacturers offer on their repairs and is among the best in the industry.

Your Zebra Printer Repair Specialist

At Mercom, we've worked hard over the years to develop a reputation as one of the best equipment repair services companies in Canada and the United States . We repair hundreds of devices like the Zebra QLn420 and others per month, allowing us to tackle projects of virtually any size. It doesn't matter whether you have one printer or 100 that need fixed, we have the tools, the talent, and the experience needed to make sure that your repairs are done right!

Send Your Zebra QLn420 In For Repair

Other than checking printer settings and changing the batteries, there is little end-users can do to fix QLn420 problems. Problems such as poor print quality, wi-fi issues, or physical damage normally mean that the printer needs to be sent out for repair. Repairing these printers though is normally fast and inexpensive and, with a warranty after the repair, well worth doing.


If you'd like to find out more information about our Zebra QLn420 repair services, or if you just want to discuss your own needs with a professional in a bit more detail, please don't hesitate to contact the team at Mercom today.