Pioneer PX-7 Service Manual page 62

RAM
areas
not checked
by
tests
©
and
(6)
are
to
be
checked by
tests
(7)
and
(§)
•
When
a
NG
condition occurs,
the
NG
output
is
accompanied by
the
NG
address,
the data
read
at
that time,
and
an
indicator tone.
Display examples
When
OK
8100
~
BFFF
00
-OK
55
-OK
AA-OK
FF-OK
When NG: 8100H
is
NG,
resulting
in
reading
of
7EH
data.
8100
~ BFFF
00
-
NG
8100-7E
55
—
NG
8100-7E
AA-NG
8100-7E
FF
-
NG
8100-7E
If
a
NG
condition occurs during
this
test,
the
pro-
gram proceeds
to
the next routine without
check-
ing
the remaining addresses
in
NG
routine.
Hence,
there
is
only a
single
NG
address data output
for
any one
routine.
That
is,
in
the
above
NG
display
example,
it is
not
possible to
tell
whether the remaining addresses
from
8101H
are
OK
or not.
CANT
CONTINUE
output
I
~
^
END
^
To
V
RAM
TEST
Fig,
1
1-16
Work
area
test
flow chart