CD 102 Error

Hi,I have a CD102 five colour and it is coming up with the error Blanket monitoring /sheet travel monitoring :no paper. Not come error 556*354 this size paper.when running 723*545 size paper come this error.
Plz, help me.

 

hi dear elder, he must have, the eye which watches the passage of the leaves which is surely dirty, vigil cleaned the cell between the first head and the second head. he must have one at the top of the cylinder and at the bottom of the cylinder. and good luck