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Chapter 4: Troubleshooting

Primary Trouble Isolation

Perform power-up.

Connect the oscilloscope power cord and press the power button in the lower left corner

of the front panel. If the oscilloscope is working properly, it will start up and the graticule

will appear on the screen. The exact appearance may vary depending on the setup

selected before the oscilloscope was turned off.

Figure 4-1

Power-on Display

If the oscilloscope shuts down without you pressing the front panel power button,

unplug the AC power cord from the rear of the instrument and wait 30 seconds for the

+5V standby supply to completely discharge. Then plug the AC power cord back into

the oscilloscope, press the front panel power button, and count how many seconds it

takes for the oscilloscope to shut off again.

1 If it takes approximately two seconds for the scope to lose power, go to the “Under-voltage

Fault” section in this chapter.

2 If it takes four seconds or more for the scope to lose power, go to the “Over-temperature

Fault” section in this chapter.

3 If the scope never powers up or shuts off almost immediately, go to the “Over-voltage

Fault” section in this chapter.

4 If all the steps within these sections have been followed and the oscilloscope still does

not turn on, go to the “Motherboard Verification” section in this chapter.

5 When the scope is fixed and remains powered up, proceed to step C.

Once the oscilloscope will remain powered up, run the oscilloscope self-tests.

1 Select Self Test from the Utilities menu (these are discussed in detail starting on page 80).

2 Select Scope Self Tests from the Self Test drop down list box.

3 Click the Start Test button and follow the instructions on the screen.

If any of the selftests fail, go to the Acquisition Trouble Isolation troubleshooting flowchart

later in this chapter for further troubleshooting. Otherwise, go to step D.

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Agilent Technologies Ininiium 90000 Spezifikationen Seite 54