PIXMA GM2040 - paper jammed error but there is no paper

[kmcz]

Hello, we have 10 Canon GM2040 printers. After a few months 3 of them don't working - LED indicates paper jam but there is no jammed paper in the printer.

I think it might just be a dirty sensor or something. How does the printer detect a paper jam? Where can I find the sensor?

[SamanthaW]

Welcome to The Canon Community, and thank you for your inquiry!

We appreciate your participation, however we need to let you know that the Canon Community is hosted and moderated within the United States by Canon USA. We are only able to provide support for Canon products manufactured for and used within the US market.

If you live outside the United States, please CLICK HERE and select your country or region for your support needs.

Feel free to discuss Canon products sold outside of the United States, but please be aware that you will not receive support directly from Canon USA. 

[kmcz]

After small discusion with EU technician we came to the conclusion that the electronics of the printer are damaged. This damage is caused by large voltage fluctuations because there are welding machines near the printers. The solution is to use some kind of voltage stabilizer or UPS.