Agilent Technologies DSO80204B, Руководство по обслуживанию

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Chapter 5: Troubleshooting
Primary Trouble Isolation
73
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, click Close.
If any of the knobs or keys do not work, go to To check the keyboard; Trouble Isolation Procedure
97.
Use the following procedure to test the front-panel LED (light-emitting diode) indicators.
1
Select Self Test from the Utilities menu.
2 Select LED from the Self Test drop-down list box, then click Start Test.
The LED test screen appears, which shows a symbolic representation of all front panel LED
indicators. See Figure 5-4.
When you push a key
or turn a knob in both
directions, the
corresponding symbol
on this screen turns
green.