Canon 2502C016 User Manual page 236

Troubleshooting
Safety-Related Symbols on the Product
Any of these symbols on the product have the following meanings.
Symbol
"ON" (power)
"OFF"(power)
Stand-by
"ON/OFF" (push-push)
Earth; ground
Protective earth; protective ground
Dangerous voltage inside.
Do not open covers other than instructed.
Caution, hot surface.
Do not touch.
Caution, hazardous moving fan blades.
Keep away from moving fan blades.
Caution, very bright light.
Do not stare into the beam.
Not for household use.
LASER RADIATION
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Meaning