Apple ColorLaserWriter 12/600PS - Manual (Page 29)

Important safety instructions
Before you plug in your printer, read these important safety instructions.
For your own safety and that of your equipment, always take the following
precautions.
If any of the following conditions exists, disconnect the power plug (by
pulling the plug, not the cord):
m the power cord or plug becomes frayed or otherwise damaged
m you spill something into the case
m your printer is exposed to rain or any other excess moisture
m your printer has been dropped or the case has been otherwise damaged
m you suspect that your printer needs service or repair
m you want to clean the case (use only the recommended procedure
described in Chapter 10)
WARNING This equipment is intended to be electrically grounded. Your
printer is equipped with a three-wire grounding plug—a plug that has a
third (grounding) pin. This plug will fit only a grounded AC outlet. This
is a safety feature. If you are unable to insert the plug into the outlet,
contact a licensed electrician to replace the outlet with a properly
grounded outlet. Do not defeat the purpose of the grounding plug!
4 Chapter 1