Canon LBP352 User Manual page 516

Are you using paper that has absorbed moisture?
● Replace with appropriate paper.
Loading Paper(P. 37)
Are you using appropriate paper?
● Check usable paper, and replace with appropriate paper.
Paper(P. 569)
Loading Paper(P. 37)
Is it time to replace the toner cartridge?
● Materials inside the toner cartridge may have deteriorated. Replace the toner cartridge.
How to Replace Toner Cartridges(P. 524)
Black Spots Appear
Have you cleaned the fixing unit?
● Clean the fixing unit.
Fixing Unit(P. 520)
Reverse Side of Paper is Smudged
Have you loaded paper that is smaller than the size of the print data?
● Check to make sure that the paper size matches the size of the print data.
Troubleshooting
509