Yamaha SPX990 Service Manual page 29

SPX990
The
initialize
method
is
according to
either
1.
or
2.
below.
1
While
pressing the
PAGE
key, the
STORE
key
and
the
BYPASS
key,
turn the
POWER
switch on.
Note:
User
data
will
be
erased. Please store the
data
before implementing.
2.
While
pressing the
PAGE
key, the
MEMORY
key
and
the EDIT
key,turn the
POWER
switch on,
start
the test
program, and implement
test 8
Note:
Tests
is
RAM
Initialize.
When
this
is
implemented,
the user data
will
be
erased.
It
is
necessary
to store
the data
before
1
.
PAGE
i
A
-
1
STORE ^ -
i:
BYPASS ^
^
W
L
-f
-/^^ONLsIy
2.
PAGET ^"tMEMORY^-tEDIT^-tW'L^'
i
y
^
t
ON
L,
r
X
[•
Xxj
A
T
X
1"=
m
rx
|-8(iRAMf-'>-vx
f
x'T"t.
•mx-t.
SERROR MESSAGES(xt-p«
MEMORY
LED
LCD
El Internal
RAM
Error
E2
External
RAM
Error
E3
ROM
Page
Change
Error
E4 ACIA
or
DSP
Error
WARNING
LOW
BATTERY
36
SPX990