Sprocket 2'si 1 arada cihazımda, c olduğunda kağıt kapağının açık olduğunu söyleyen bir hata mesajım var...

@Alison14
 
Welcome to HP forums.
 
Remove the Paper Cover and locate the pin-hole near the Paper Tray. Insert a straight pin into the hole to press the Reset Button until the printer turns off. Restart the device.

 
Let me know if that help.
To thank me for my efforts to help you, please mark my post as an accepted solution so that it benefits several others.
Cheers.