Symptom
Paper jam (J001) occur after removing the paper which was jammed between fusing section and registration section. This is because the registration filler has got under the registration roller when removing the jammed paper.
Solution
Open the front cover.
MP 501/601: Push the button [A] and open the front cover [B].
SP 5300/5310: Open the upper cover [A], and then open the front cover [B].
Pull out the PCDU [A].
Check whether the registration filler [A] moves smoothly.