Yamaha YAS-108 Owner's Manual page 9

Hearing loss
Do not use the unit for a long period of time at a high or uncomfortable
volume level, since this can cause permanent hearing loss. If you
experience any hearing loss or ringing in the ears, consult a physician.
Before connecting the unit to other devices, turn off the power for all
devices.
Failing to do so may result in hearing loss, electric shock, or device
damage.
Maintenance and care
Remove the power plug from the AC outlet before cleaning the unit.
Failure to observe this may cause electric shocks.
Handling caution
Do not insert foreign materials such as metal or paper into the openings of
this unit.
Failure to observe this may cause a fire, electric shocks, or malfunctions.
Keep small parts out of the reach of infants.
Your children may accidentally swallow them.
Do not do the following:
– stand on or sit on the equipment.
– put heavy items on top of the equipment.
– place the equipment in a stack.
– apply unreasonable force to buttons, switches, input/output terminals,
etc.
– hang on the equipment.
– lean against the equipment.
Failure to observe this may cause injuries or damage to the equipment.
Avoid pulling the connected cables to prevent injuries or damage to the
unit by causing it to fall.
Battery use
Do not use batteries other than specified batteries.
Doing so cause fire, burns, or inflammation due to leakage.
Keep batteries away from children.
A child could accidentally swallow a battery. Failure to observe this may
also cause inflammation due to battery fluid leaks.
Do not put in a pocket or bag, carry, or store batteries together with pieces
of metal.
The battery could short, burst, or leak, causing a fire or injury.
Always make sure all batteries are inserted in conformity with the +/-
polarity markings.
Failure to do so might result in a fire, burns, or inflammation due to fluid
leaks.
When the batteries run out, or if the unit is not to be used for a long time,
remove the batteries from the remote control to prevent possible leakage
of the battery fluid.
When storing or discarding batteries, insulate the terminal area by
applying tape, or some other protection.
Mixing them with other batteries or metal objects can cause a fire, burns,
or inflammation due to fluid.
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