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Top Products
MZ3500
(
Check
No. 4 )
Border
in
black
!•
"H" in whi
(
Check
No. 5 )
Kff
"H" in red
"H" in
green
"H" in
white
(
Check
No. 6 )
(
Check
No. 7 )
(
Check
No. 8 )
Backroung
in red
Back
ground
in
green
Back
ground
in
black
L "H" in
blue
L "H" in
green
[•
"H" in
white
4)
Speaker
test
Performance
of the
speaker
and the
volume
control
are
tested.
Listen
carefully
to
detect
any
abnormal sound
or
mulfunction.
Adjust
the
volume
control
to a
suitable
listen-
ing
level.
5)
Printer interface test
Performance
of the
printer
interface signal lines
and
action
of the
8255
are
tested.
[Dispaly]
(1)
Normal test ending
PR
OK
(2)
Abnormal test ending
PR
ER
6)
Light
pen
interface
test
Performance
of
light
pen
interface
signal
lines
and the
action
of the GDC are
tested.
[Display]
On the
upper
left
corner
of the
screen
is
displayed character
and
line.
(1)
Normal test ending
LP
OK
(2)
Abnormal
test
ending
LP ER
7)
RS232C
interface test
Performance
of
RS232C
interface
signal
lines
and the
action
of the
8251
are
tested.
[Display]
(1)
Normal
test
ending
RS
OK
(2)
Abnormal
test
ending
RS ER
L-
"H" in
blue
"H" in red
"H" in
white
R
S
2
3
2
C
C/
^n
c
*^
CD
DR
N
PO
Ready
O
_
O
_
"
O
.
O
M
O
.
O
.
O
.
H
O
rt
M
1
5
2
7
9
10
8
6
4
3
}
}
}
}
•
H'
H'
H'
H'
in
blue
in red
in
green
' in
white
It
will
need
wiring connection
as
illustrated
in the
figure
in
order
to
test
the
RS232C
interface.
Pins
of the
RS232C
interface
edge
connector must
be
wired
in the
following
manner:
Front
side
/
*
7531
-
98
-