4Service
64 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 Agilent 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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