Before Starting The Removal And Replacement Procedures; Personal Safety Warnings; Electrostatic Discharge (Esd) Protection; Assembly Replacement Sequence - Agilent Technologies PNA Series Service Manual

PNA Series Microwave Network Analyzers
E8361A

Before Starting the Removal and Replacement Procedures

Before starting the removal and replacement procedures, review these warnings, cautions,
and the assembly replacement sequence.

Personal Safety Warnings

WARNING These servicing instructions are for use by qualified personnel only.
To avoid electrical shock, do not perform any servicing unless you
are qualified to do so.
The opening of covers or removal of parts is likely to expose
WARNING
dangerous voltages. Disconnect the analyzer from all voltage sources
while it is being opened.
The power cord is connected to internal capacitors that may remain
WARNING
live for 10 seconds after disconnecting the plug from its power
supply assembly. Wait at least 10 seconds, after disconnecting the
plug, before removing the covers.

Electrostatic Discharge (ESD) Protection

Many of the assemblies in this instrument are very susceptible to damage
CAUTION
from electrostatic discharge (ESD). Perform the following procedures only at
a static-safe workstation and wear a grounded wrist strap.
This is important. If not properly protected against, electrostatic discharge
can seriously damage your analyzer, resulting in costly repair.
To reduce the chance of electrostatic discharge, follow all of the
recommendations outlined in
1-5, for all of the procedures in this chapter.

Assembly Replacement Sequence

The following steps show the sequence that you should follow to replace an assembly in the
network analyzer.
Step 1. Identify the faulty group. Begin with
Step 2. Order a replacement assembly. Refer to
Step 3. Replace the faulty assembly and determine what adjustments are necessary.
Refer to this chapter.
Step 4. Perform the necessary adjustments. Refer to
Step 5. Perform the necessary performance tests. Refer to
Adjustments."
Service Guide E8361-90001
Before Starting the Removal and Replacement Procedures
"Electrostatic Discharge Protection" on page
Chapter 4, "Troubleshooting."
Chapter 6, "Replaceable Parts."
Chapter 3, "Tests and Adjustments."
Chapter 3, "Tests and
Repair and Replacement Procedures
7- 3