What are the possible causes of paper misfeeds?

clean the rubber on paper tray in clean cotton cloh with some drop of 70% alcohol...this rubber location where the paper feed...

Paper misfeeds can be caused by the following problems: Using non-standard paper. Use standard paper and feed special papers through the manual bypass. See your operation manual for details. Damp or curled paper can cause a misfeed. Store copy paper flat in the wrapper in a dry location. Are there pieces of paper inside the copier? Remove all pieces of misfeed paper. Paper guides in the paper tray need to be set correctly. Set guides properly depending on paper size being used. Do not overfill paper tray. Remove excess paper from the paper tray.

remove jammed paper from stack bypass, where is that located?

another possible cause.. check the pick up rollers..maybe worn out or dirty rollers.. cleaned the rollers using a semi wet cloth.

clean your paper feed tiers with rag and ceaning solvent