6.2.2 Imaging unit ………………………………………………… 6-76.2.3 Cartridge Transfer Unit …………………………………… 6-126.2.4 2nd Transfer roller ………………………………………… 6-156.2.5 Fuser Unit …………………………………………………… 6-166.2.6 Pick up/ Retard/ Forward roller …………………………… 6-176.2.7 Ozone Filter ………………………………………………… 6-176.2.8 Dust Filters ………………………………………………… 6-186.2.9 DADF Rollers (Pick up /ADF/ Retard) …………………… 6-196.2.10 MP Pick up / Retard / Forward roller …………………… 6-246.3. Cleaning the PM parts ………………………………………… 6-266.3.1 Cleaning the charge scorotron …………………………… 6-266.3.2 Cleaning the pick up roller ………………………………… 6-276.3.3 Cleaning the Regi roller …………………………………… 6-286.3.4 Cleaning the tray1 feed roller ……………………………… 6-286.3.5 Cleaning the tray2 feed roller ……………………………… 6-296.3.6 Cleaning the LSU window ………………………………… 6-306.3.7 Cleaning the DADF retard rubber pad …………………… 6-316.3.8 Cleaning the DADF rollers ………………………………… 6-327.1 Procedure of checking the symptoms ………………………… 7-17.2 Error code and troubleshooting ………………………………… 7-37.2.1 Error code and error message …………………………… 7-37.2.2 Error Code Details ………………………………………… 7-147.3 Image quality problems and solutions ………………………… 7-1347.3.1 Vertical white band / Dark band …………………………… 7-1377.3.2 Horizontal white band / dark band ………………………… 7-1397.3.3 Color spot …………………………………………………… 7-1407.3.4 Foggy background ………………………………………… 7-1417.3.5 Blurred image ……………………………………………… 7-1427.3.6 Incorrect color registration ………………………………… 7-143chapter 7 Preventive Maintenance (PM)Contents
