Specifications

Chapter 5: Troubleshooting
Primary Trouble Isolation
77
C
Run oscilloscope self-tests.
1 Select Self Test from the Utilities menu.
2 Select oscilloscope Self Tests from the Self Test drop down list box.
3 Select the Start Test button and follow the instructions on the screen.
If any of the Self Tests fail, go to the Acquisition Trouble Isolation troubleshooting flowchart later
in this chapter for further troubleshooting. Otherwise, go to step D.
D
Check the front panel response by running the knob, key, and LED self tests.
Use this procedure to verify correct keyboard operation.
1 Select Self Test from the Utilities menu.
2 Select Knob and Key from the Self Test drop down list box, then select Start.
A new window appears with a symbolic representation of the keyboard. See See Figure 5-3.
Figure 5-3
Knob and Key Self Test Screen
3 Push each key on the keyboard until you have pushed all keys.
When you push a key, the corresponding key symbol on the display should change from red to
green.
4 Turn each knob in both directions until you have turned all knobs.
When you turn a knob in one direction, the corresponding knob symbol on the display should
change from red to yellow. When you then turn the knob in the other direction, the knob symbol
should change from yellow to green.
5
When you are finished, select Close.
If any of the knobs or keys do not work, see “To Check the keyboard” on page 86.
When you push a key
or turn a knob in both
directions, the
corresponding symbol
on this screen turns
green.