Troubleshooting 4
S-Series Oscilloscopes Service Guide 55
Run the keyboard, LED, and touch screen self tests.
To verify correct keyboard operation:
1 Click Utilities > Self Test....
2 Select Keyboard Test from the drop-down list box, then click Start.
The Front Panel Keyboard Test window appears, showing a symbolic
representation of the keyboard.
3 Press each key on the keyboard until you have pressed all keys. When you press
a key or push a knob, the bar above the corresponding key/knob 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, half the rotation arrow under the corresponding
knob symbol should turn green. When you then turn the knob in the other
direction, the entire rotation arrow under the knob symbol should turn green.
5 When you are finished, click Close.
6 If any of the knobs or keys do not work, go to “Keyboard Troubleshooting” later
in this chapter.
When you push a key
or turn a knob, the
corresponding symbol
turns green.
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