JRC JMR-611 Instruction Manual page 146

WARNING
Turn off the main power source before starting
maintenance.
Otherwise, an electric shock or injury may be
caused.
Turn off the main power if you need to be near the
scanner unit for maintenance or inspection
purposes. Direct exposure to electromagnetic
waves at close range result in death or serious
injury.
Set the safety switch for stopping the scanner unit
to the OFF position.
Otherwise, an accidental contact with the rotating
scanner unit may cause injury.
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