How to Troubleshoot a Samsung Printer

Overall poor print quality: Clean the print heads with a little rubbing alcohol.
Colored or black background on your paper: Use a lighter-weight paper or replace the toner cartridge.
Spots on the printed paper: Check to see if rollers within the printer are dirty, have small pieces of paper stuck to them or need to be replaced.
Horizontal striping: Check to see if the toner cartridge is installed properly.
Vertical white lines: Check for a dirty lens, toner cartridge window or drum.
Horizontal black bands: Replace the contacts on the toner cartridge terminals or the cartridge rollers.