Samsung SLM2830DW

1. Vertical Black Line and Band

• Description : Straight thin black vertical line occurs in the printed image.

Check and cause	Solution
• Damaged develop roller in the toner system. Deformed Doctor-blade or cleaning-blade. • Scratched surface of the charge roller in the toner system.	Replace the laser toner cartridge or imaging unit.
Partly depression or deformation on the surface of the transfer roller.	Replace the transfer roller.

2. Vertical White Line, Band

• Description : White vertical voids occurs in the printed image.

Check and cause	Solution
Foreign matter stucks onto the window of internal lenses of LSU mirror.	Clean the LSU window with recommended cleaner (IPA). Clean the window with a clean cotton swab.
The life of the laser toner cartridge or imaging unit has been expired	Replace the laser toner cartridge or imaging unit.
Some foreign substances are on the window of the imaging unit frame.	Remove the foreign matter of the exposure window.
If the fuser is defective, voids occur periodically at the top of a black image.	Open the rear cover. Reinstall the fuser unit.

3. Horizontal Black Band

• Description : Dark of blurry horizontal stripes occur in the printing periodically.

Probable Cause	Solution
Bad contacts of the voltage terminals to toner system.	Clean each voltage terminal of the Charge, Developing roller and Transfer roller. (remove the toner particles and paper particles)
The rollers of developer may be stained. • OPC Drum = 75.4 mm • Charge Roller = 26.7 mm • Developing Roller = 36.75 mm	Replace the laser toner cartridge or imaging unit.