Keysight U2751A Guía Del Usuario Y Servicios página 49

Upon replacing the relay(s), reset the relay cycle count to zero by issuing the
following SCPI command:
DIAGnostic:RELay:CYCLes:CLEar (@<ch_list>)
Keysight U2751A User's and Service Guide
Separate the carrier and measurement board.
There are 32 relays as shown.
Turn to the opposite side of the measurement
board and ensure that only the defective relays
are desoldered.
Service Information 4
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