Kyocera FS-1128MFP Service Manual - Page 138

2JN 1-4-5 Mechanical problems Problem (1)No primary paper feed. (2)No secondary paper feed. (3)Skewed paper feed. (4)Multiple sheets of paper are fed at one time. (5)Paper jams. (6)Toner drops on the paper conveying path. (7)Abnormal noise is heard. (8)When the trouble occurs in the DP. Causes/check procedures Corrective measures Check if the surfaces of the paper feed roller Clean with isopropyl alcohol. is dirty with paper powder. Check if the paper feed roller is deformed. Check visually and replace any deformed paper feed roller (assembly) (See page 1-56). Defective paper feed clutch installation. Check visually and remedy if necessary. Check if the surfaces of the upper and lower registration rollers are dirty with paper powder. Clean with isopropyl alcohol. Defective registration clutch installation. Check visually and remedy if necessary. Paper width guide in a cassette installed incorrectly. Check the paper width guide visually and correct or replace if necessary. Check if the separator pad or MPF separation Replace the separator pad if it is worn. pad is worn. Check if the paper is curled. Replace the paper. Check if the paper is excessively curled. Replace the paper. Check if the contact between the upper and Check visually and remedy if necessary. lower registration rollers is correct. Check if the heat roller or press roller is extremely dirty or deformed. Replace the fuser unit (See page 1-5-34). Check if the contact between the ejection roller and fuser ejection pulley is correct. Check visually and remedy if necessary. Check if the drum unit or developing unit is extremely dirty. Clean the drum unit or developing unit (See page 1-5-30 or 1-5-29). Check if the pulleys, rollers and gears operate Grease the bearings and gears. smoothly. Check if the following electromagnetic clutches are installed correctly: Paper feed clutch, registration clutch and developing clutch. Check visually and remedy if necessary. Refer to the DP's service manual. 1-4-20