Yamaha FX900 - Manual (Page 4)

1. Precautions
!i PLEASE READ THIS BEFORE PROCEEDING !!
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. AVOID PHYSICAL SHOCKS
Strong physical shocks to the unit can cause damage.
Handle it with care.
3. DO NOT OPEN THE CASE OR ATTEMPT REPAIRS
OR MODIFICATIONS YOURSELF
This product contains no user-serviceable parts. Refer
all maintenance to qualified Yamaha service personnel.
Opening the case and/or tampering with the internal
circuitry will void the warranty.
4. MAKE SURE POWER IS OFF BEFORE MAKING OR
REMOVING CONNECTIONS
Always turn the power OFF prior to connecting or
disconnecting cables.
5. HANDLE CABLES CAREFULLY
Always plug and unplug cables — including the AC cord
— by gripping the connector, not the cord.
6. 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.
7. ALWAYS USE THE CORRECT POWER SUPPLY
Always use the correct AC voltage to power your FX900.
Make sure that your FX900 is appropriate for the AC
mains supply voltage in the area where you intend to
use it (the correct supply voltage is marked on the rear
panel, below the power cord).
8. ELECTRICAL INTERFERENCE
Since the FX900 contains digital circuitry, it may cause
interference and noise if placed too close to TV sets,
radios or similar equipment. If such a problem does
occur, move the FX900 further away from the affected
equipment.
9. MIDI CABLES
When connecting to FX900 to MIDI equipment, be sure
to high-quality cables made especially for MIDI data
transmission. Also avoid cables longer than about 15
meters, as longer cables can pick up electrical noise that
can causes data errors.
10 .
MEMORY BACKUP
The FX900 contains a special long-life battery that
retains the contents of its internal RAM memory even
when the power is turned OFF. The backup battery
should last for approximately 5 years. When the battery
voltage drops to a level that is too low to maintain the
memory contents, the following message will appear on
the FX900 display when the power is turned ON;
*» WARNING **
LOW BATTERY
If this display appears, have the backup battery replaced
by qualified Yamaha service personnel. DO NOT
ATTEMPT TO REPLACE THE BACKUP BATTERY
YOURSELF!
11. ERROR MESSAGES
When the FX900 power is initially turned ON, a self­
diagnostic program runs automatically to check a
number of important operational parameters. If a
problem is found, an error message ("EO" through "E8")
will appear on the liquid crystal display panel. If an error
message appears, please take the FX900 to your
nearest Yamaha dealer for servicing, and be sure to tell
the service personnel which error message was
displayed.