IBM 3278 Series Maintenance Information page 28

Symptom
Action
18.
One keyboard
Set the Normal/Test switch to
key fails.
the Test position, and check the
code for the failing key. (See
par. 3.3.1.2, Test Mode 2.1 If
the character is incorrect, swap
the keyboard logic card. (See
Chapter 6.1 If the character is
correct, check the keyboard 10
jumpers. (See Figure 4-10.) If
the jumpers are correct, swap
the keyboard logic card.
19. Incorrect
(0)
A1G2
characters
(M) A1F2
enter from
Reseat!swap the keyboard logic
keyboard.
card. Check the keyboard/PC
mounting screws. Check the
keyboard cables. (See Figure
4-16.)
20.
3278 cannot be Check:
logged online.
•
Run L Test 0 (AA/O) to
enable
•
Security Key on (clockwise)
•
Normal/Test switch
in Normal position
•
Coaxial cable connector
seated
A1G2
A1F2
(0)
A1E2
Go to Entry Point A, MAP 05.
21.
Selector-pen
(0)
A1C4
failures.
(0)
A1E4
(M) A1G4
Reseat/swap the selector pen.
A1G2
A1F2
22.
MSR!MHS
A1B4
failures.
A1G2
Reseat/swap the MSR.
23.
Error Codes See 3.3.2.3, Error Log Display,
Indicated. and 3.3.2.5, Error Log/Repair
Action.
24-
APL/Text (0) A1D02
mode errors.
A1G02
(M)
A1E2
2-00-6
SY27-2510-6