Samsung ML-2150 Service Manual

Also see for ML-2150: Product guide Solution guide User guide Manual Del Usuario User manual

Contents

777-1Samsung ElectronicsT RO U B L E S H O OT I N GService Manual7. Troubleshooting7.1 The cause and solution of Bad image7.1.1 Vertical Black Line and Band• Description 1. Straight thin black vertical line occurs in the printing.2. Dark black vertical band occur in the printing.Digital P interDigital P interDigital P interDigital P interDigital P interCheck and Cause Solution1. Damaged develop roller in the Toner car-tridge. Deformed Doctor-blade or clean-ing-blade.2. Scratched surface of the discharge rollerin the toner cartridge.3. Partly depression or deformation on thesurface of the transfer roller.1. If causes 1 and 2 occur in the toner car-tridge, replace the toner cartridge and tryto print out.2. Replace the transfer roller if occurred asNo. 3.7.1.2 Vertical White Line• Description White vertical voids in the image.Digita PrinterDigita PrinterDigita PrinterDigita PrinterDigita PrinterCheck and Cause Solution1. Foreign matter stuck onto the window ofinternal lenses of LSU mirror.2. Foreign matter or toner particles betweenthe toner cartridge roller and blade.(In case the life of the toner cartridge hasbeen expired, white lines or light imageoccur in front of the image.)3. It may occur when Burr and foreign sub-stances are on the window of the tonercartridge frame.4. If the fuser is defective, voids occur peri-odically at the top of a black image.5. It may occur when foreign substancesare on the OPC Drum.1. Foreign matter stuck onto the window :Clean the LSU window with recommend-ed cleaner(IPA) Clean the window with aclean cotton swab.2.. Replace the toner cartridge.3. No 3. : Remove the foreign matter andburr of the exposure window.(toner cartridge)4. No. 4. : Open the front cover and checkribs that corresponds to the position ofthe voids. Remove if found.5. If the problems are not solved, replacethe toner cartridge.

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