Replacement Procedure; Replacing An Assembly - Keysight E4980A Service Manual

Keysight E4980A/E4980AL Precision LCR Meter
Service Guide
6

Replacement Procedure

This chapter provides procedure for removing and replacing the major
assemblies in the E4980A/ E4980AL.

Replacing an Assembly

The following steps show the sequence for replacing an assembly in a E4980A/
E4980AL Signal Source Analyzer.
1. Identify the faulty group. Refer to
2. Order a replacement assembly. Refer to
3. Replace the faulty assembly and determine what adjustments are
4. Perform the necessary adjustments. Refer to
5. Perform the necessary performance tests. Refer to
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 dangerous
voltages. Disconnect the instrument from its power supply.
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.
necessary. Refer to This chapter and
"Performance Test."
Chapter 4, "Troubleshooting."
Chapter 5, "Replaceable Parts."
Chapter 7, "Post-Repair Procedures."
Chapter 3, "Adjustment."
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Chapter 2,