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• These servicing instructions are for use by qualified personnel only.
To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating
instructions unless you are qualified to do so. Refer all servicing to qualified service personnel.
Applicable to Central unit
• Be sure to follow the instructions below when rack-mounting the unit. Failure to do so may cause a fire or
personal injury.
· Install the equipment rack on a stable, hard floor. Fix it with anchor bolts or take other arrangements to
prevent it from falling down.
· To rack-mount the unit, use the supplied rack mounting hardware.
· When connecting the unit's power cord to an AC outlet, use the AC outlet with current capacity allowable to
the unit.
Applicable to Central unit and Expansion unit
• Never plug in nor remove the power supply plug with wet hands, as doing so may cause electric shock.
• When unplugging the power supply cord, be sure to grasp the power supply plug; never pull on the cord itself.
Operating the unit with a damaged power supply cord may cause a fire or electric shock.
• When moving the unit, be sure to remove its power supply cord from the wall outlet. Moving the unit with the
power cord connected to the outlet may cause damage to the power cord, resulting in fire or electric shock.
When removing the power cord, be sure to hold its plug to pull.
• If dust accumulates on the power supply plug or in the wall AC outlet, a fire may result. Clean it periodically.
In addition, insert the plug in the wall outlet securely.
• Switch off the power, and unplug the power supply plug from the AC outlet for safety purposes when cleaning
or leaving the unit unused for 10 days or more. Doing otherwise may cause a fire or electric shock.
• Use the dedicated AC adapter for the unit. Note that the use of other adapter may cause a fire.
Applicable to Central unit, Conference unit, and Expansion unit
• Avoid installing the unit in humid or dusty locations, in locations exposed to the direct sunlight, near the heaters,
or in locations generating sooty smoke or steam as doing otherwise may result in fire or electric shock.
• Do not place heavy objects on the unit as this may cause it to fall or break which may result in personal injury
and/or property damage. In addition, the object itself may fall off and cause injury and/or damage.
Applicable to Central unit and Conference unit
• Make sure that the volume control is set to minimum position before power is switched on. Loud noise
produced at high volume when power is switched on can impair hearing.
Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.
CAUTION
Applicable to Central unit, Conference unit, and Expansion unit
This is a class A product.
In a domestic environment this product may cause radio interference in which case the user may be
required to take adequate measures.
