Chapter 7-Assembly Replacement; Replaceable Parts List; Opening The S412E Case - Anritsu S412E Maintenance Manual

Chapter 7 — Assembly Replacement
7-1

Replaceable Parts List

Refer to Table 1-5, "List of Replaceable Parts and Assemblies
following sections for basic replacement instructions.
Many of the procedures in this section are generic, and apply to many similar instruments. Photos
Note
and illustrations used are representative and may not match your instrument.
Only qualified personnel should open the case and replace internal assemblies. Assemblies shown in
Table 1-5 are typically the only items that may be replaced. Because they are highly fragile, items that
must be soldered may not be replaced without specialized training.
Caution
Removing RF shields from PC boards or adjustment of screws on or near the shields may detune
sensitive RF circuits and will result in degraded instrument performance. All work should be
performed in a static-safe work area.
7-2

Opening the S412E Case

Electrostatic Discharge (ESD) can damage the highly sensitive circuits in the instrument.
Repair of damage that is found to be caused by electrostatic discharge is not covered under
warranty.
Caution
The LMR Master contains components that can be easily damaged by electrostatic discharge (ESD).
An ESD safe work area and proper ESD handling procedures that conform to ANSI/ESD
S20.20-1999 or ANSI/ESD S20.20-2007 is mandatory to avoid ESD damage when handling
subassemblies or components found in the instrument.
This procedure provides instructions for opening the S412E case. With the case opened, the internal
assemblies can be removed and replaced, as detailed in the following sections.
1. Remove the battery door and battery as shown in
on page 6-3.
S412E MM
for the list of replaceable parts. Refer to the
Section 6-4 "Battery Pack Removal and Replacement"
PN: 10580-00324 Rev. N 7-1