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X-7
(2)
Sound
Test
Testing of the following keys.
[1]
L
channel
PSG(IC5)
B
ch.
(PIN
3)
output check
[2]
R
channel
PSG(IC5)
C
ch.
(PIN
38)
output check
[3]
Center (PSG)
PSG(IC5)
A
ch.
(PIN
4)
output check
[4]
Center
(PPI)
PSG(IC4)
SOUND
(PIN
10)
output check
NOTE
1
(Low
volume
level)
[
5]
MUTE
OFF
External audio input
mut-
ing
OFF
[6]
Center
(FILTER)
Center
localization
out-
put frequency changed
in
cycles
from
1
kHz
to
10
kHz,
28
kHz
and
back
to 1
kHz.
[7]
Melody
Melody
play
3.
When
trigger
button
B
(grey
button
in
the
main
unit)
is
pressed,
a lower
pitch
sound
(than the
above beep
sound)
is
generated,
and
the back-
ground
color
is
changed from
COLOR
1 thru
COLOR
15.
The
graphic characters displayed
on
the screen
are cleared at
this
stage
and
returned
to
the center
position.
*
Since the graphic characters
cannot be
distin-
guished
if
the character
and background
colors
are
the same, change
either
color
by
trigger
operation.
(4)
Printer
Test
Output
of the
following
characters to printer
or
CENTRONICS CHECK BOARD.
*
If
the
CENTRONICS CHECK
BOARD
is
used,
ASCII
codes
20H
thru
7AH
are
shown
in binary.
!"#$%&'()*+,— ./0123456789
:;<=>?
@ABCDEFG
HI
JKLMN OPQRSTU
V WXY
Z
[\]
abcdefghij
klmnopqrstuvwxyz
(3)
Controller Test
Testing of
CONTROLLER
1
and
CONTROLLER
2
port.
Connect
PX-JY8
to
the
selected
CONTROLLER
port.
1.
The
graphic characters
shown
in
the
accompa-
nying diagram
are shifted (and leave a
trail)
depending
on
the
direction of
the
grip
(but
cannot be
moved
beyond
the edge of the
screen).
(FORWARD)
Fig.
11-6 Controller
test
2.
A
beep sound
is
generated
when
trigger
A
(orange
button
in
top of
grip)
is
pressed,
and
the graphic
character color
is
changed
sequentially
from
COLOR
1 thru
COLOR
15.
(5)
Cassette Test
Save data
on
cassette tape,
and then
load the
tape
and compare
the
data.
(6)
System Cont
Test
[1]
SYSTEM CONTI
(SD-26)
Switch
the
INPUT
selector to
the
TV
posi-
tion
by remote
control,
and change
the channel
upwards.
•
Do
not change channels
upwards
if
no
ex-
ternal
video
signal
is
applied to
the PX-7.
•
Execute
the
remote
control operation
via
SD-R5
(RGB
pack)/ZE
(see
I/M
for
connec-
tion
details).
[2]
SYSTEM CONT2
(LD-1100)
[3]
SYSTEM CONT3
(LD-700)
Activate the
LV
player,
search for
frame
1000,
and
then
"step forward".
*Use
CAV
disc
NOTE
1
This
MUTE
OFF
test
must
be
done
in
COMPUTER
mode.
In case the picture
is
unstable
because of
the
asyhchronbus
(SUPERIMPOSE
MODE, VIDEO
MODE),
push
the
COMPUTER
key
to recover the
normal
picture.
56
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