Specifications

Chapter 4: Troubleshooting
Primary Trouble Isolation
49
D
Check the front panel response by running the Keyboard and LED self tests.
Follow these steps to verify correct keyboard operation.
1 Select Self Test from the Utilities menu.
2 Select Keyboard Test from the Self Test drop- down list box, then click Start Test.
The Front Panel Keyboard Test window appears with a symbolic representation of the
keyboard. See Figure 4- 3.
Figure 4-3 Knob and key self test screen
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.
Follow these steps to test the front panel LED (light- emitting diode) indicators.
1 Select Self Test from the Utilities menu.
2 Select LED Test from the Self Test drop- down list box, then click Start Test.
When you press a key
or turn a knob in both
directions, the
corresponding symbol
on this screen turns
green.