Yamaha SPX990 Manual download pdf (Page 6)

PRECAUTIONS

1. AVOID EXCESSIVE HEAT, HUMIDITY, DUST AND

VIBRATION

Keep the unit away from locations where it is likely to be

exposed to high or low temperature - such as near sun

exposure places, stove, etc. Also avoid locations which are

subject to excessive dust accumulation or vibration which

could cause mechanical damage.

2. AVOID PHYSICAL SHOCK

Strong physical shocks to the unit can cause damage. Handle

with care.

3. DO NOT OPEN THE CASE OR ATTEMPT REPAIRS

OR MODIFICATIONS YOURSELF

This unit 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 CONNECTION

Always turn the power OFF prior to connecting or discon-

necting cables. This is important to prevent damage to the

unit itself as well as other connected equipment.

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 or

aerosol spray to spray the unit. Wipe clean with a soft, dry

cloth.

7. ALWAYS USE THE CORRECT POWER SUPPLY

Make sure that the power supply voltage specified on the rear

panel matches your local AC main supply.

8. THUNDER STRIKE

Disconnect the unit quickly when there is any lighting

striking in your area.

9. ELECTRICAL INTERFERENCE

Since the unit 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

unit further away from the affected equipment.

10. MEMORY BACKUP

The SPX990 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 approxi-

mately 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 unit display when the power is

turned ON.

It is recommended that as a back-up system you should save

the data into the memory card or store the data into external

devices for MIDI bulk out (you cannot save data into the

memory card for Program Change Table and System Data).

If this display appears, have the backup memory replaced by

a qualified Yamaha service personnel. Do not attempt to do it

yourself.

NOTE: The preset program will not to erased even if the

battery voltage drops.

11. STORAGE

After reading this operation manual, please keep it and the

warranty in a safe place for future reference.

12. ERROR NUMBER

When the SPX990 power is initially turned ON, a self-

diagnostic program runs automatically to check a number of

important operational parameters. If a problem is detected, an

error number El through E4 will appear on the MEMORY

No. display. If the error numbers appears, please take the

SPX990 to your nearest Yamaha dealer for servicing, and be

sure to tell the service personnel which error number was

displayed.

System Initializing

When you press the PAGE Select

key, STORE key and

BYPASS key at the same time, the system will be

initialized with power supply ON. Please take note that

the stored user memory will return to original setting.

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Yamaha SPX990 Manual Page 6

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