Keysight Technologies N5222B, Service Manual

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7-36 Keysight N5290/1A Service Guide
Repair and Replacement Procedures
Post-Repair Procedures
7-
Post-Repair Procedures
After the replacement of an assembly, you must perform the service
procedures in the order listed in Table 7-2 .
Procedures referenced in this table are located in Chapter 3, “System Tests
and Adjustments,” unless specified otherwise.
STOP!
Before returning the repaired instrument to the customer, it is
critical to ensure the product is safe for use. Before powering on the
instrument, verify there is ground continuity between the ground
terminal on the AC Inlet and the metal frame of the product. It is
also critical to perform a voltage test on the outer surfaces of the
product to confirm the instrument does not present an electric
shock hazard.
IMPORTANT! Before you begin any testing on a System or instrument,
always inspect the connectors on the instrument, the calibration kit,
cables and adapters.
Keysight personnel: see Figure 1-1 on page 1-6 to review where the
calibration stickers should be placed on the N5292A.
Table 7-2 Related Service Procedures
Replaced Assembly
Adjustments
and Other Procedures
Verification, Performance,
and Other Tests and Procedures
N5292A Test Set
Front panel and subpanel
assemblies
No adjustment needed Check for proper operation.
A1 power supply assembly No adjustment needed Millimeter head heater DAC
Millimeter power supplies verification
A2 LOPA assembly No adjustment needed ’LO Verify all ports (with corrections)’
A3 Phase compensation PCA No adjustment needed ’LO Verify all ports (with corrections)’
A4 LODA assembly No adjustment needed ’LO Verify all ports (with corrections)’