(
(
(
F G H
222
DISPLAY
MAP
PAGE 3
OF
10
017
-Disconnect the cable
from
Z3.
-Probe
J2-J02.
Are
both
lights
on?
V N
018
-Connect the Z3 (display and control
panel) cable.
Defective
J2
(display) card.
019
Defective display assembly.
Check/replace
display and control panel
cable (refer
to
210, 241).
020
Defective
J2
(display) card.
Defective display assembly.
Check/replace
display and control panel cable
(refer
to
210, 241).
021
-Remove the jumper
from
J2-P02.
-Press the
top
of
the
REVERSE
DISPLAY switch.
Is
the
background
of
the
5
inch
display
now
black
instead
of
white?
V N
3
J
022
Defective
J2
(display) card.
J
3
MAP
0500-3
023
-Press the
bottom
of
the
REVERSE
DISPLAY
switch.
-Switch
the DISPLAY REGISTERS switch
to
DISPLAY REGISTERS.
Is
there
video
(any
black
image)
within
the
raster
area
of
the
display
screen?
V N
024
-Probe
J2-P02
(-
I/O
display off).
Is
only
the
DOWN
light
on?
V N
025
-Probe
J2-B12
(-machine video)
Are
both
lights
on?
V N
026
-Disconnect the cable
from
Z3.
-Probe
J2-B
12.
Are
both
lights
on?
V N
027
Defective
J2
(display) card.
Defective
F2
(base
I/O)
card.
Defective G2 (controller) card.
028
Defective display assembly.
Check / replace display and control panel
cable (refer
to
210, 241).
029
-Probe the following pins:
J2-J05
(+C2),
J2-P04
(+C4).
Are
both
lights
on
for
all
probe
points?
V N
28SEP76
PN
1608389
4 4 4 4
K L M N
EC
829670
PEC
828851
MAP
0500-3
I
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