Samsung SCX-5315F Series Service Manual

Also see for SCX-5115: Product guide User guide Service manual

Troubleshooting4-20 Samsung ElectronicsAbnormal Image Printing and Defective RollerIf abnormal image prints periodically, check the parts shown below.Different image den-sity(left and right)1. Uneven pressure between Charge rollerand OPC Drum2. Uneven pressure between Dev roller andOPC drum3. Transfer roller’s pressure force uneven ateach side1. Change OPC cartridge2. Change toner and / or OPC Drum3. Check left and right transfer roller springsHorizontal lines orbands1. Bad contact on high voltage terminal2. Contamination of charge roller3. Contamination of heat roller 4. Malfunctionof LSU1. Clean each contact and check continuity2. Print several “cleaning sheets” – replaceOPC drum if problem persists.3. Replace fuser unit4. Check Main PBA., LSU harness and LSUNO Roller Abnormal image period Kind of abnormal image1 OPC Drum 94.3 mm White spot. Black spot2 Charge Roller 37.7 mm White spot. Black spot3 Supply Roller 35.8 mm Horizontal dark band4 Develope Roller 44.8 mm Horizontal dark band5 Transfer Roller 56.6 mm Contamination on reverse side of paper / trans-fer fault6 Heat Roller 82.5 mm Black spot, White spot7 Pressure Roller 78.5 mm Contamination on reverse side of paperError Status Check SolutionDigital PrinterDigital PrinterDigital PrinterDigital PrinterDigital Printer