Conventions Used For Hardkeys, Softkeys, And Menu Items; Operating The Analyzer With Covers Removed; Protect Against Electrostatic Discharge (Esd); Assembly Replacement Sequence - Keysight N5221A Service Manual

PNA Series Microwave Network Analyzers
N5221A/22A

Conventions Used for Hardkeys, Softkeys, and Menu Items

The following conventions are used in this document:
Hardkey
Softkey
Menu Item

Operating the Analyzer With Covers Removed

CAUTION Do not operate the analyzer with the outer cover removed for more than 30 minutes, as this
could cause the analyzer to overheat which could result in costly damage.

Protect Against Electrostatic Discharge (ESD)

This is important. If not properly protected against, electrostatic discharge can seriously damage your
analyzer, resulting in costly repair.
CAUTION To reduce the chance of electrostatic discharge, follow all of the recommendations outlined
in "Electrostatic Discharge Protection" on page

Assembly Replacement Sequence

After identifying the problem requiring an assembly to be replaced, follow these steps:
Step 1. Order a replacement assembly. Refer to
Step 2. Replace the faulty assembly and determine what adjustments are necessary. Refer to
"Repair and Replacement Procedures."
Step 3. Perform the necessary adjustments. Refer to
Step 4. Perform the necessary performance tests. Refer to
Service Guide N5222-90001
This represents a "hardkey", a key that is physically located on the
instrument.
This represents a "softkey", a key whose label is determined by the
instrument firmware.
This represents an item in a drop-down or pop-up menu.
Chapter 6, "Replaceable Parts."
Chapter 3, "Tests and Adjustments."
Operating the Analyzer With Covers Removed
1-6, for all of the procedures in this chapter.
Chapter 3, "Tests and Adjustments."
Troubleshooting
Chapter 7,
4-3