Wyse WY-60 Maintenance Manual page 37

Figure
3-1 Troubleshooting Flowchart, page
1 of 7
Start
Prepare terminal
for troubleshooting
Symptom: No beep
Symptom: No v ideo
Symptom: Dim video
Symptom: Single line
of video on screen
Symptom: Vertical
roll
Symptom: Raster,
no video
Symptom: Letter
on screen before
diagnostic self-test
Run diagnostic self-test
Symptom: Letter
on screen after
diagnostic self-test
Symptom: Poor display
quality
Symptom: Keyboard not
operating
Symptom: Communication
problems
Sympt8m: Characters
scrambled or degraded,
dots missing
Symptom: Characters
don't appear on the
screen
End
3-2
3-7
3-7, 3-10
3-10
3-10
3-10
3-10
3-10
3-3
3-10
Chapter
4,
Per fo rm full
alignment
3-12
3-12
3-12
3-12
3-6