Yamaha SY77 Service Manual page 35

SY77
SY77
19.
TEST
19:
DATA CARDS READ/WRITE TEST
t 19;
D-Card R/»rite
This
performs
a read/write test
on the following addresses
of
the
RAM
cards.
CARD
1
:
20000h-27FFFh
CARD
2
:
28000h -
2FFFFh
Insert a
RAM
cards with the
memor/
protect turned
off
and execute
the
test.
DISPLAY OF TEST RESULTS
OK
NQ
*
19:
D-Card R/Write CARD
:
12
OR
»
19:
D-Card R/Hrite
CARD
;
x
RC
(e.g.
if
CARD
2
is
No
Good)
TEST
END
After displaying the results,
the test
will
end.
All
card data
is
preserved.
20.
TEST
20:
DATA CARD PROTECT SWITCH TEST
*
20
:
D-Card Protect
0
Use
a
RAM
card to
check
that
the card protect switch status
is
being read.
Check
that
when
the
switch
is
set
from
"protect
off" to
"protect on", the
number
orTthe
display
changes from
0
to
1
and
that the
OK
result
is
also displayed.
DISPLAY OF TEST RESULTS
OK
NG
TEST END
After displaying the
result,
the
test will
end.
If
NG
is
detected during the test, refer to section
B,
"B.
PROCEEDING
THROUGH
THE
TESTS".
»
20: D-Card Protect
1
OR
(No change
in
display)
21.
TEST
21:
RAM
BACKUP BATTERY TEST
I
*
21:
D-Card Battery
This test
checks
that
the voltage of
the
RAM
card
backup
battery.
DISPLAY OP TEST RESULTS
*
21!
D-Card Battery
8
.
8V OR
*
21
!
D-Card Battery
8
.
«V
Lo»
NG
t
21
:
D-Card Battery
8.8V
Kish HG
TEST END
Ends
after displaying
the
test results.
57