CLS621 Printer Errors

CLS621 Printer Errors

This knowledge base article shows you the common CLS621 Printer Errors encountered when using this printer for producing number plates. When your printer detects a problem, its control panel lights up to indicate the issue. But being a simple machine, any problem can easily be found and fixed. Below you will find common errors listed alongside their solutions.

CLS621 Printer Errors and Alarm Codes

Errors are shown by activating & flashing the LED lights

Paper mentioned throughout this article refers to any type of compatible media. If you have any other error please check your guide or the manufacturers website before getting in touch.

Print Errors

When your CL-S621 Printer detects a problem it sounds an alarm and flashes its lights. Below we have listed a range of common print problems, alongside their light status. You can use the lights location and colour to identify the issue.

A table of CL-S621 Printer Error Codes

Here’s how common errors are shown

Note: Silence the printers alarm by pressing the stop button.

Troubleshooting Errors & Alarms

Once you know what problem you have, you can then start to put it right. The troubleshooting information below, shows how to fix common problems found when using these printers.

Abnormal Temperature

CLS621 Sheet options

Adjust your print head temperature on the options tab

Overheating issues can usually be solved by providing adequate ventilation and spacing around the printer, see the operating conditions guide. If you are getting abnormal print head temperatures first ensure it’s clean. Check the print head temperature settings are at the correct values shown in the image below.

Head Open

Head open alarms can occur when the unit has not been locked down correctly, this can stop operation. Open the top cover, find the blue knob and push it down to secure the print head unit. If it fails to close correctly check for any jammed media. Replace the printers top cover when finished.

Ribbon Errors

Tighten CLS621 ribbon cores

Check your ribbon is seated correctly and is wrinkle free

Replace a ribbon when fitting a new media roll or when the end of the ribbon is detected by the printer. Or in the case of a “Ribbon End” false positive, check the cores are fitted properly and check the tension settings.

Ribbon errors occur when they have not been installed correctly or are twisted and wrinkled. Always ensure the winding cores are fully inserted and are configured as outside wound or ink out. A loose or wrinkled ribbon will require the cores tightening to remove creases and any slack. Check the tension and media adjustment controls for incorrect settings, refer to your manual for your values.

Media Errors

The simplest media problem is when the printer detects it’s empty, simply re-stock the machine with fresh components to solve this. When loading a new roll, use the feed button on the control panel to move printing to the start of a panel.

Need Help?

Please refer to your user or manufacturers guide for more up-to-date information. If you need further assistance with your number plates contact our customer service team for help. And remember, customers can order Cleaning Pens or Alcohol Swabs from our online np-shop.