2JN1-4-201-4-5 Mechanical problemsProblem Causes/check procedures Corrective measures(1)No primary paperfeed.Check if the surfaces of the paper feed rolleris dirty with paper powder.Clean with isopropyl alcohol.Check if the paper feed roller is deformed. Check visually and replace any deformedpaper feed roller (assembly) (See page 1-5-6).Defective paper feed clutch installation. Check visually and remedy if necessary.(2)No secondary paperfeed.Check if the surfaces of the upper and lowerregistration rollers are dirty with paper pow-der.Clean with isopropyl alcohol.Defective registration clutch installation. Check visually and remedy if necessary.(3)Skewed paper feed. Paper width guide in a cassette installedincorrectly.Check the paper width guide visually andcorrect or replace if necessary.(4)Multiple sheets ofpaper are fed at onetime.Check if the separator pad or MPF separationpad is worn.Replace the separator pad if it is worn.Check if the paper is curled. Replace the paper.(5)Paper jams. Check if the paper is excessively curled. Replace the paper.Check if the contact between the upper andlower registration rollers is correct.Check visually and remedy if necessary.Check if the heat roller or press roller isextremely dirty or deformed.Replace the fuser unit (See page 1-5-34).Check if the contact between the ejectionroller and fuser ejection pulley is correct.Check visually and remedy if necessary.(6)Toner drops on thepaper conveying path.Check if the drum unit or developing unit isextremely dirty.Clean the drum unit or developing unit (Seepage 1-5-30 or 1-5-29).(7)Abnormal noise isheard.Check if the pulleys, rollers and gears operatesmoothly.Grease the bearings and gears.Check if the following electromagneticclutches are installed correctly:Paper feed clutch, registration clutch anddeveloping clutch.Check visually and remedy if necessary.(8)When the troubleoccurs in the DP.Refer to the DP’s service manual.Service Manual Y111030-4