HP 8753E Service Manual page 522

Replacing an Assembly
The following steps show the sequence to replace an assembly in an HP 8753E
Network Analyzer.
1. Identify the faulty group. Refer to Chapter 4, "Start Troubleshooting Here."
Follow up with the appropriate troubleshooting chapter that identifies the
faulty assembly.
2. Order a replacement assembly. Refer to Chapter 13, "Replaceable Parts."
3. Replace the faulty assembly and determine what adjustments are necessary.
Refer to Chapter 14, "Assembly Replacement and Post-Repair Procedures"
4. Perform the necessary adjustments Refer to Chapter 3, "Adjustments and
Correction Constants n
5. Perform the necessary performance tests. Refer to Chapter 2, "System
Verification and Performance Tests m
Warning
These servicing instructions are for use by qualmed
personnel only. lb avoid electrical shock, do not perform
any servicing unless you are qualified to do so.
Warning
expose dangerous voltages.
all voltage sources while it is being opened.
Warning
The power cord is
remain live for 10 seconds after disconnecting the plug from
its power supply.
Caution Many of the assemblies in this instrument are very susceptible
to damage from ESD (electrostatic discharge). Perform the
following procedures only at a static-safe workstation and wear
a grounding strap.
Assembly Replacement and Post-Repair Procedures
of parts is
likely to
the instrument from
to internal capacitors that may