Oki C 110 - Manual (Page 67)

67 - C110 User’s Guide
CAUTION
If you get toner in your eyes, wash it out immediately with cool
water and consult a doctor.
"
Make sure any parts removed during cleaning are replaced before you
plug in the printer.
Cleaning the Printer
CAUTION
Be sure to turn off the printer and unplug the power cord before
cleaning. However, be sure to turn on the printer when cleaning
the print head window.