4Service
76 U2000 Series Operating and Service Guide
Service
The following service instructions consist of information on
troubleshooting, and repairs.
Troubleshooting
The U2000 Series USB power sensors represent 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 power sensor. The LED will only be blinking red if the power sensor
failed in the self- test. The command SYSTem:ERRor is used to read the
exact error messages which occur on the power sensor. Please kindly send
the power sensor back to the nearest service centre for repair. Refer to
the “LED Indicator Guide” for more information.
Repairing a Defective Sensor
There are no serviceable parts inside the U2000 Series USB power
sensors. If the sensor is defective, please send it back to the nearest
Keysight Service Center for repair. The entire module of the defective
sensor will be replaced with the appropriate replacement module. See
Table 4- 10.
Electrostatic discharge will render the power sensor inoperative. Do not, under any circumstances,
open the power sensor unless you and the power sensor are in a static free environment.
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