Yamaha SPX90 II - Manual (Page 3)

PRECAUTIONS
NOTE: It is vital to read this section before using your SPX90II Digital Multi-Effect Processor. This unit utilizes
state-of-the art digital technology which, although designed to provide years of trouble-free use, requires
careful handling.
• VOLTAGE RATINGS
Be sure the AC supply in your area is appropriate
for your SPX90II.
U.S./Canadian Model; 110V - 120V, 50/60Hz.
General Model-: 220 — 240V, 50/60Hz.
• ENVIRONMENTAL TEMPERATURE
Do not expose the SPX90II to excessive heat. The
operating temperature range of this unit is between
0 and 40 degrees centigrade (32 and 104 degrees
Fahrenheit). The LCD may not function properly
under extreme temperature conditions. It will return
to normal after cooling down to within the proper
temperature range.
•
• EXTERNAL CLEANING
Do not clean the exterior of the SPX90II with
solvents such as benzine or paint thinner. Dust,
dirt, or fingermarks should simply be removed with
asoft, dry cloth. Internal cleaning of the unit should
only be performed by a qualified technician.
BACKUP BATTERY
To ensure that User Programs are not lost when
the SPX90H's power is turned off, a built-in
long-life battery acts as a backup. In normal use,
this battery lasts 5 years, but it is advisable to change
the battery before this time has elapsed. Contact
your local Yamaha dealer for details.
NOTE: When you change the battery, the User
Programs may be lost. As a safeguard, take
note of all parameters of your User Programs
in the USER PROGRAMMING TABLE ac­
companying this manual. The SPX90II can
then be reprogrammed once a new battery
is installed. The preset programs are per­
manent, and will not be affected by a change
of battery.
ERROR MESSAGES
When power is initially turned ON an automatic
circuit test program is executed to ensure proper
operation. If an error is encountered, one of the
following error messages will be displayed:
EO: ROM checksum error.
El: CPU RAM read/write error.
E2: External RAM read/write error.
Make a note of the error message and inform the
service personnel when the unit is to be serviced.