20 Most Recent Kyocera FS-3900DN Laser Printer - Page 3 Questions & Answers

Upgrade the engine firmware using a Compact Flash (CF) card.

try to upgrade the engine and main firmware to the latest versions. If this procedure does not work, then you must replace the engine pwb.

Hi Open the top cover and remove the Cartridge - With Air Blower - Blow air inside the printer for 2 min Insert the Cartridge and turn the printer on Check your Printer now Regards

What brand of printer?

The problem is with paper pickup rollers.They are at the begining of the tras.Try to clean it, and try to rotate it.If it's not moving then try to disassamble it. You will see there is a spring underneath the rollers. Be sure if the spring stands in its place.Feel free to ask.