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Yamaha DSP-A990 Operation Manual: Precautions & Safety Instructions

Digital sound field processing amplifier.
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PRECAUTIONS & SAFETY INSTRUCTIONS
SAFETY INSTRUCTIONS
1. AVOID EXCESSIVE HEAT, HUMIDITY, DUST
AND VIBRATION
Keep the unit away from locations where it is likely to be
exposed to high temperatures or humidity—such as
near radiators, stoves, etc. Also avoid locations which
are subject to excessive dust accumulation or vibration
which could cause mechanical damage.
2. INSTALL THE UNIT IN WELL-VENTILATED
CONDITION
The openings on the cabinet assure proper ventilation
of the unit. If these openings are obstructed, the
temperature inside the cabinet will rise rapidly.
Therefore, avoid placing objects against these
openings, and install the unit in well-ventilated
condition. Make sure to allow a space of at least 10
cm behind and on the both sides and at least 20 cm
above the top panel of the unit. Otherwise it may not
only damage the unit, but also cause fire.
3. KEEP THE AC POWER PLUG
DISCONNECTED DURING VACATION ETC.
When not planning to use this unit for long periods of
time (ie., vacation, etc.), disconnect the AC power
plug from the wall outlet.
4. AVOID PHYSICAL SHOCKS
Strong physical shocks to the unit can cause damage.
Handle it with care.
5. DO NOT OPEN THE UNIT OR ATTEMPT
REPAIRS OR MODIFICATIONS YOURSELF
This product contains no user-serviceable parts. Refer
all maintenance to qualified Yamaha service personnel.
Opening the unit and/or tampering with the internal
circuitry will make servicing difficult and will endanger
you and your unit.
6. MAKE SURE POWER IS OFF BEFORE
MAKING OR REMOVING CONNECTIONS
Always turn power OFF prior to connecting or
disconnecting cables. This is important to prevent
damage to the unit itself as well as other connected
equipment.
7. HANDLE CABLES CAREFULLY
Always plug and unplug cables—including the AC
cord—by gripping the connector, not the cord.
8. CLEAN WITH A SOFT DRY CLOTH
Never use solvents such as benzine or thinner to clean
the unit. Wipe clean with a soft, dry cloth.
9. ALWAYS USE THE CORRECT POWER
SOURCE
Make sure that the power source voltage specified on
the rear panel matches your local AC mains supply.
10.KEEP AWAY FROM TUNERS
Digital signals generated by the unit may interfere with
other equipment such as tuners, receivers or TVs. Move
the system farther away from such equipment if
interference is observed.
IMPORTANT!
Please record the model and serial number of your
unit in the space below.
Model:
Serial No.:
The serial number is located on the rear of the unit.
Retain this Owner's Manual in a safe place for future
reference.
Voltage Selector (General Model only)
The voltage selector on the rear panel of this unit
must be set for your local mains voltage
BEFORE plugging into the AC mains supply.
Voltages are 110/120/220/240 AC, 50/60 Hz.
WARNING
To reduce the risk of fire or electric shock, do not
expose this unit to rain or moisture.
For U.K. customers
If the socket outlets in the home are not suitable for
the plug supplied with this appliance, it should be cut
off and an appropriate 3 pin plug fitted. For details,
refer to the instructions described below.
Note: The plug severed from the mains lead must be
destroyed, as a plug with bared flexible cord is
hazardous if engaged in a live socket outlet.
SPECIAL INSTRUCTIONS FOR U.K. MODEL
IMPORTANT
The wires in the mains lead are coloured in
accordance with the following code.
Blue: NEUTRAL
Brown: LIVE
As the colours of the wires in the mains lead of this
apparatus may not correspond with the coloured
markings identifying the terminals in your plug,
proceed as follows. The wire which is coloured BLUE
must be connected to the terminal which is marked
with the letter N or coloured BLACK. The wire which is
coloured BROWN must be connected to the terminal
which is marked with the letter L or coloured RED.
Making sure that neither core is connected to the
earth terminal of the three pin plug.
This product complies with the radio frequency
interference requirements of the Council Directive
82/499/EEC and/or 87/308/EEC.
The apparatus is not disconnected from the AC
power source as long as it is connected to the wall
outlet, even if the apparatus itself is turned off.
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