Tools; Inspection; Unit Description; Replacement Procedures - Garmin GNS 400W Series Maintenance Manual

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REPLACEMENT PROCEDURES

This section describes replacement procedures for all serviceable parts listed in
Section 6. The section also includes periodic maintenance information.
All units contains static sensitive components.
procedures when replacing parts.
5.1

TOOLS

Standard avionics shop tools are used to replace parts.
5.2

INSPECTION

Perform the following inspection procedures on an assembled unit before replacing any parts.
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Verify that all screws are secure and in place.
•
Verify that the display face is clean.
•
Verify that external surfaces have no dents, scratches, etc.
•
Inspect for broken or bent pins on external connectors.
•
Inspect internal areas for obvious shorts, burned areas, or corrosion.
•
Inspect for charred, loose, or damaged components.
•
Inspect wires and cables for breaks in insulation or tears.
5.3

UNIT DESCRIPTION

All units are nearly identical in their electrical and mechanical design and board location. Table
5-1 identifies the board configuration for each unit in the 400W series.
GNS 400W Series Maintenance Manual
190-00356-05
SECTION 5
NOTE
Observe proper anti-static
Page 5-1
Rev. A