Symptom
The paper jam (such as J031, J054, J057, J069) occur in the paper path between Tray 1 and around the registration.
Solution
Clean the registration sensor 1 and opposing part.
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].
Clean the registration sensor 1 [A] with a damp cloth from the backside of the PCDU [B].
Clean the opposing part [A] of the registration sensor 1 with the damp cloth.