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Problems That Occur During the Power-On Sequence
Match your symptom with one of the symptoms in Figure 1 and take the
action specified. For each symptom, the most probable cause is listed first.
Symptom (See note)
Probable Cause
Action
Blank screen
3290 T
See "Blank Screen Problem" on
(No separator line)
page 18.
nnnn 1110
1.
Keyboard cable not
Check the keyboard cable.
1111
plugged in
Refer to page 4 for the proper
instructions.
2.
Defective 3290 T
Contact your local IBM
representative.
0001
Defective 3290 T
Contact your local IBM
0010
representative.
0011
0100
0101 nnnn
0110
0111
1000 0001
0
0001
0
nnnn 0001
1000
1.
Control unit not ready
Make sure the signal cable is
or signal cable not
properly connected. Refer to
connected or damaged
page 5 for the proper
instructions. If the problem still
exists, follow the local
procedures for reporting
problems with the control unit.
2.
Defective 3290 T
Contact your local IBM
representative.
0
1.
Control unit
Follow the local procedures for
0
nnnn
communication
reporting problems with the
interrupted during
control unit.
downstream load
2.
3290 T microcode
Follow the local procedures for
reporting 3290 T microcode
problems.
3.
Defective 3290 T
Contact your local IBM
representative.
1000 0010
Control unit diskette not
1.
Ensure that the correct
0
nnnn 0010
ready
diskette is in the control
unit, that it is properly
inserted, and the diskette
drive door is closed.
2.
Turn the 3290 T power off
and then on.
3.
Wait 2 minutes (testing).
4.
If the problem still exists,
follow the local procedures
for reporting problems
with the control unit.
Note; n
=
0 or 1
Figure 1 (Part 1 of 2). Problems That Occur During the Power-On
Sequence
12
mM 3290 T Information Panel Installation and Problem Determination Guide
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