Keysight Technologies N5290/1A PNA Series Service Manual page 51

System Tests and Adjustments
The N5290/1A Millimeter Test System Preliminary Check
If the Head Check Fails
1. Clean the test ports, shorts and adapters. Torque to specification. Repeat
the check.
2. If the head check still fails and the failure is one port only: Then swap the
suspect head onto one of the other good ports (i.e., requires running the
N5290/1A system adjustments. Refer to
the problem follows the head, return the head to the factory for repair.
Refer to
3. If the failure is on all of the ports, swap in a known good head to verify the
problem is not the test set.
4. If the check still fails, and the test set is OK, the head should be repaired or
replaced and is a return-to-factory repair. For more on troubleshooting the
millimeter heads refer to
head:" on page
5. If the head(s) are OK, but the PNA is suspected as the problem, remove all
cables from the PNA to the test set and run the PNA Operator's Check.
Refer to the
90001.pdf.
If the PNA fails the Operator's Check, refer to the PNA's Service Guide for
https://www.keysight.com/find/pna
page
If the PNA fails the Operator's Check, repair the PNA or return the PNA to
the factory for repair. Refer to the Service Guide for your PNA or to
"Contacting Keysight" on page
6. If the PNA passes the Operator's Check, and the heads are OK, then the
N5292A is faulty. Refer to
page
Keysight N5290/1A Service Guide
"Contacting Keysight" on page
"Procedure for identifying a faulty millimeter
4-8.
https://literature.cdn.keysight.com/litweb/pdf/E8356-
2-7.
"N5292A Functional Verification Procedure" on
3-16.
"Adjustments" on page
2-7.
or to "Contacting Keysight" on
2-7.
3-47). If
3-15