U3020AD01
Service Information
1. If the RF Switches are not operating, continue with the following procedure:
a. Determined if you can hear an audible switching sound.
b. If an audible sound is heard, but the switch is not being properly
control in order for the correct Port to be selected, it is possible that
the instrument Power On preset set has been corrupted.
c. Contact Keysight Technologies for support in recovering this preset
set.
d. If no audible sound is heard, remove the top cover of the instrument.
e. Insure that the ribbon cable connections at the distribution board
and switch are properly in place.
f. Measure the three labeled output power supply voltages on the
Controller Module at the green connector.
g. If any voltages are not present, the Controller Module Power Supply
will need to be replaced.
RF Switch
N
ot Switching
21
Keysight U3020AD01 User's and Service Guide
