IBM 3278 Series

C H
2 4
025
MAP 02
Display MAP
PAGE 5 OF 19
Hold intensity control in override position.
Does raster flash off and on?
N
026
Exchange cards 01 AI A 1 F2, 01 AI A 1 E2 (Dl.
or O1A/A1G2, F2 (M).
Reconnect coax signal cable, feature card(s).
Test
for proper operation.
027
Exchange High Voltage power supply.
Reconnect coax signal
cable, feature card(s).
Verify correct operation.
028
(Entry Point B)
Use the intensity override control to force a display
on
the screen.
Does the screen have a raster displayed with
override ON?
N
029
Is the screen blank?
N
030
Exchange logic card 01 AI A 1 E2 (0), or
01AI A1 F2 (M).
Is problem still present?
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