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4
Repair Guide
Troubleshooting
The U2020 X-Series represents a combination of a power meter and power
sensor in one unit. If the LED is red and blinking, it indicates that there is a
hardware error or operating system (OS) error in the U2020 X-Series. The LED will
only blink red if the U2020 X-Series fails the self-test. The
command is used to read the exact error messages of the errors that occur on the
U2020 X-Series. You should send the U2020 X-Series to the nearest Keysight
Service Center for repair. Refer to the User's Guide for more information on the
LED indicators.
Electrostatic discharge will render the U2020 X-Series inoperative. Do not,
CAUTION
under any circumstances, open up the U2020 X-Series unless you and the
U2020 X-Series are in a static-free environment.
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SYSTem:ERRor
Keysight U2020 X-Series Service Guide
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