IBM 3278 Series User Manual

Symptom
Action
5.
Displays fu II
(0)
A1E2
raster with
A1H2
intensity set
to A1F2
normal (cursor
may
also display);
or each character
position
displays
the fu II character
space.
6.
Displays one of A1F2
the following:
A1G2
•
Divider Line
only
•
Divider Line
and a
line at
bottom of
screen
•
Random data
after power on
•
Test pattern
when online
7.
Cursor flashes at A1G2
random
locations.
A1F2
8.
Display size
Reseat/swap
the high-voltage
changes when
power
supply. (See par. 6.2.5.1
intensity
is
changed.
9.
Display ti Ited or Adjust the yoke or analog card
incorrect size.
potentiometers.
(See par. 5.1.1
10. Cursor missing, Verify with the Normal/Test
will
not blink or switch in the Test position.
reverse.
Check
the analog card adjust-
ment (see Chapter 5).
A1F2
(0)
A1E2
A1G2
11.
Normal/Test
A1G2
switch operation
A1H2
failure.
Check the switch and cables.
(See
Figure 4-13.1
12. Monocase
(0)
A1E2
(A,a/A)
A1G2
switch operation
Check
the switch and cables.
failure.
(See
Figure 4-13.1
2-00-4
SY27-2510-6

IBM 3278 Series Specifications

General

Brand	IBM
Model	3278 Series
Category	Desktop
Language	English