Keysight InfiniiVision 2000 X Series, Service Manual

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64 2000/3000 X-Series Oscilloscopes Service Guide
4
Troubleshooting
Solving General Problems with the Oscilloscope
This section describes how to solve general problems that you may encounter
while using the Keysight 2000/3000 X-Series oscilloscopes.
After troubleshooting the oscilloscope, if you need to replace parts, refer to
Chapter 6 , “Replaceable Parts,” starting on page 73.
If there is no display
✔
Check that the power cord is firmly seated in the oscilloscope power
receptacle.
✔
Check that the power source is live.
✔
Check that the front-panel power switch is on.
✔
If there is still no display, go to the troubleshooting procedures in this chapter.
If there is no trace display
✔
Check that the Intensity (on the front panel) is adjusted correctly.
✔
Recall the default setup by pressing [Default Setup] . This will ensure that the
trigger mode is Auto.
✔
Check that the probe clips are securely connected to points in the circuit under
test, and that the ground is connected.
✔
Check that the circuit under test is powered on.
✔
Press the [AutoScale] key.
✔
Obtain service from Keysight Technologies, if necessary.
If the trace display is unusual or unexpected
✔
Check that the Horizontal time/division setting is correct for the expected
frequency range of the input signals.
✔
The sampling speed of the oscilloscope depends on the time/division setting. It
may be that when time/division is set to slower speeds, the oscilloscope is
sampling too slowly to capture all of the transitions on the waveform. Use peak
detect mode.