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. AVOID EXCESSIVE HEAT, HUMIDITY, DUST AND
VIBRATION
Keep the unit away from locations where it is likely to be ex-
posed 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.
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. AVOID PHYSICAL SHOCKS
Strong physical shocks to the unit can cause damage. Handle it
with care.
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. DO NOT OPEN THE UNIT OR ATTEMPT REPAIRS
OR MODIFICATIONS YOURSELF
This product contains no user-serviceable parts. Refer all mainte-
nance to qualified Yamaha service personnel. Opening the unit
and/or tampering with the internal circuitry will void the war-
ranty.
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. MAKE SURE POWER IS OFF BEFORE MAKING OR
REMOVING CONNECTIONS
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Always turn the power OFF prior to connecting or disconnecting
'cables. This is important to prevent damage to the unit itself as
well as other connected equipment.
. HANDLE CABLES CAREFULLY
Always plug and unplug cables — including the AC cord — by
gripping the connector, not the cord,
. 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.
. ALWAYS USE THE CORRECT POWER SOURCE
Make sure that the power source voltage specified on the rear
panel matches your local AC mains source.
U.S. and Canadian Models: 120V AC, 60 Hz
General Model: 220 — 240V AC, 50/60 Hz
. ELECTRICAL INTERFERENCE
Since the DEQ7 contains digital circuitry, it may cause interfer-
ence and noise if placed too close to TV sets, radios or similar
equipment. If such a problem does occur, move the DEQ7 further
away from the affected equipment.
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. BACKUP BATTERY
The DEQ7 contains a long-life lithium battery which maintains
the contents of the buffer and user memory locations even when
the unit is turned OFF. With normal use the battery should last
for approximately 5 years. If the battery voltage falls below the
safe level, however, the "***WARNING*** LOW BATTERY"
display will appear on the LCD when the power is first turned
ON. If this occurs, have the battery replaced by a qualified
Yamaha service center: Do not attempt to replace the battery
yourself.
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