Error Codes - IBM 3279 2A Maintenance Information

Une
1
5
8
10
11
12
(~'#,J
rmD
~:~~:~,~2
if
PS
~A
~A
<;:()~()~
Figure 2-7. Test 8 Pattern
2.6.8 Error Codes
iB
~B ~c ~D ~E
~B ~c
~D ~E
2
3
4 5
2
3 4 5
~A
~B
~A
Try to reset the error by either pressing the RESET
key or by setting the Normal/Test switch to Test
then back to Normal. If the failure persists, or
recurs, consult the appropriate table below.
In the following error code tables, FRUs are listed
in order of probability of failure. Check the
following before exchanging any FRU:
Seating of cards and cables.
• Dirty or bent board pins or card/top card
connector contacts.
Voltages on board pins.
3279 MIM
6
6
Une
AND IC) & TEST IF) are reserve video
PS IC)
&
COLOR IF) blink
3 iFl \
~
are red
5 (C)
~
are red with white centers
7 7 (F)
P
is blue, 2 is red, 3 is pink, 4 is green
7 8 (C)
~
5 is turquoise, 6 is yellow, 7 is white
10
11
12
~
is red from font A
~
is red from font B (skip supressed)
~js
red from font A
Notes:
1. If PS fonts are not installed, the
~
&
~
is
rep/aced by green period and omitted on
lines 10, 11 and 12.
2. Feature PS2 gives fonts A and B. Feature PS4
gives 4 extra fonts, C through
F.
3. Color is green unless stated. Control is by
(C) Character Attribute or (F) Extended Field
Attribute.
See Figures 6-4 and 3-2 for voltage pin locations
and section 5. t for voltage tolerances.
Exchange or repair suspected FRUs one at a time,
and verify correct operation each time. If the
suggested actions do not cure the problem,
investigate seating and continuity of associated
cables and board wiring, then read MAP 0000 page
2 and go to MAP 0100 Entry Point A.
Chapter 2. Maintenance Aids 2-11