Trouble Shooting StepCauseSolutionParts1Scratch or dirt on the develop unit.Replace the develop unit.Develop unit (015-0204-21)

Trouble Shooting StepCauseSolutionParts1HVPS (High-Voltage Power Supply) defective.Replace HVPS.HVPS (005-3141-9-SP)2Main board defectiveReplace main board MBA890.Main board:AM7630i (004-3479A-9-SP)AM7640i (004-3479B-9-SP)AM5630i (004-3479C-9-SP)AM5640i (004-3479D-9-SP)

Trouble Shooting StepCauseSolutionParts1Drum defective.Replace the drum unit.Drum (015-0289-21)2HVPS (High-Voltage Power Supply) defective.Replace HVPS.HVPS (005-3141-9-SP)3Main board defectiveReplace main board MBA890.Main board:AM7630i (004-3479A-9-SP)AM7640i (004-3479B-9-SP)AM5630i (004-3479C-9-SP)AM5640i (004-3479D-9-SP)

Trouble Shooting StepCauseSolutionParts1Drum unit defective.Replace the drum unit.Drum (015-0289-21)2Not enough tonerReplace toner cartridgeToner 6K (015-0296-21)10K (015-0297-21)3LSU defective.Replace LSU.LSU (002-B097-0-SP)

Trouble Shooting StepCauseSolutionParts1Dirt in the paper path.Wipe off the dirt. Refer to < The Spacing of Various Rollers in the Image >Table (see below).2Develop unit defective.Replace the develop unit.Develop unit…

Trouble Shooting StepCauseSolutionParts1Dirt on the drum unit charger.Clean the charger of the drum unit (see below).  2Device and the drum unit not conducting.Replace the drum unit.Drum (015-0289-21)3LSU defective.Replace LSU.LSU (002-B097-0-SP)4Main…

Trouble Shooting StepCauseSolutionParts1Dirt on the paper path.Wipe the dirt off. Refer to < The Spacing of Various Rollers in the Image >Table (see below).3Dirt on the pressure roller.Replace fuser.Fuser (015-0301-0)4HVPS…

Trouble Shooting StepCauseSolutionParts1OPC(Organic Photo Conductor) of drum unit worn out.Replace the drum unit.Drum (015-0289-21)2Toner cartridge defective.Replace toner cartridgeToner 6K (015-0296-21)10K (015-0297-21)3Develop unit defective.Replace the develop unit.Develop unit (015-0204-21)