Screen Is Blank - IBM 3151 Manual To Operations

Solving Problems
Screen is Blank
Note: If the audible alarm continues to sound, go to "Alarm Continues to
Sound" on page 5-5.
1
Turn the brightness control knob fully counterclockwise.
2
Press any key.
Is tile screen still blank?
Yes Go to step 3.
No This is normal operation. The message area was inactive. No
problem exists; continue work.
3
Set the power switch to 0 (Off).
4
Check the power source.
Do you have power at the power outlet?
Yes Go to step 5.
No
Report this problem to your supervisor.
5
Set the power switch to I (On).
Is the screen still blank?
Yes Go to step 6 on page 5-10.
No No problem exist; continue work.
Chapter 5. Solving Problems
5-9