fs-c5016n blurry prints

[lightningjeremy]

this fs-c5016 has 27k on the meter. it has recently started having some blurred prints. is there any type of calibration with this model? what is the pm sched. for the dev. units? thanx

[blsquires]

remove and vac excess toner from dev and drum units .clean leds with something like toothpaste .
put everything back then do a colour registration .menu,others ,colour registration, print regist chart.
then adjust as needed.