46 Keysight Technologies N9040B UXA Signal Analyzer Service Guide
Boot Up and Initialization Troubleshooting
Check the Basics
Check the Basics
Before calling Keysight Technologies or returning the instrument for service,
please make the following checks:
1. Is there power at the power outlet? At the power receptacle on the
instrument?
2. Is the instrument turned on? Check to see if the front panel LED is green,
which indicates the power supply is on.
3. If other equipment, cables, and connectors are being used with the
instrument, make sure they are connected properly.
4. Review the procedure for the measurement being performed when the
problem appeared. Are all the settings correct?
5. If the instrument is not functioning as expected, return the unit to a known
state by pressing the Mode Preset key.
6. Is the measurement being performed, and the results that are expected,
within the specifications and capabilities of the instrument? Refer to the
Specifications Guide for specifications.
7. In order to meet specifications, the instrument must be aligned. Press
System, Alignments, Align Now, All. The diagnostic tests should all pass.
If the instrument displays a failure during these tests, refer to “Fails an
Initial Alignment” on page 65.
8. Check to see if the instrument has the latest firmware before starting the
troubleshooting procedure. Press System, Show, System. The firmware
revision is listed under Firmware Revision. For more information, refer to
Chapter 18, “Instrument Software”, on page 533.
9. Is the instrument displaying an error message? If so, refer to Chapter 3,
“Instrument Messages”, on page 73 for more information.
10.If the necessary test equipment is available, perform the functional checks
in Chapter 17, “Functional Tests”, on page 503.
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