IBM 3278 Series Maintenance Information page 47

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?
8 6 6 6
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