Post Installation Configuration & Checkout Procedures; Mounting And Wiring Check; Connector Engagement Check; Configuration Mode Operations - Garmin GPS 400W Installation Manual

5. POST INSTALLATION CONFIGURATION & CHECKOUT PROCEDURES
Once the 400W Series unit has been installed, configure the unit for the particular installation and then
complete the checkout procedures herein to verify proper operation. The steps that are not applicable to a
particular installation may be skipped. A checkout log is included in Table 5-1 at the end of this section
and is to be filled out during the checkout procedures. The completed checkout log sheet should be
maintained with the aircraft permanent records.
5.1

Mounting and Wiring Check

Verify that all cables are properly secured and shields are connected as the install drawings indicate.
Installation may require that you check the movement of the aircraft controls to verify that there is no
interference.

5.2 Connector Engagement Check

Prior to the configuration and checkout of the 400W Series unit the connector engagement should be
checked as described below:
1. Turn on the 400W Series unit, and turn on the avionics master switch (if applicable).
2. Place the 400W Series unit in the rack and engage the pawl mechanism.
3. Turn the Allen screw of the locking pawl slowly clockwise until the 400W Series unit just comes
on. A "T" handle makes the turns easy to count, but do not over-tighten.
4. Count the number of complete revolutions you can turn the Allen screw until it can not turn any
more (but take care not to over-tighten). Three turns is the minimum for proper installation. If
fewer than three turns are possible, the mounting rack should be moved aft (toward the pilot) such
that the aircraft panel does not obstruct the unit from engaging in the rack.
5.3

Configuration Mode Operations

With power applied to the aviation rack and the 400W Series unit turned off, press and hold the ENT key
and turn the unit on. Release the ENT key when the display activates. After the Data Base and
Instrument Panel Self-test pages, the first page displayed is the MAIN ARINC 429 CONFIG page. While
in Configuration Mode, pages can be selected by ensuring the cursor is off and rotating the small right
knob.
To change data on the displayed Configuration Page, press the small right knob (CRSR) to turn on the
cursor. Rotate the large right knob to change between data fields. Rotate the small right knob to change a
field that the cursor is on. Once you have made the desired selection, press the ENT key to accept the
entry.
The Configuration Pages described in the following sections are in the order found when rotating the right
small knob clockwise starting at the MAIN ARINC 429 CONFIG page.
The configuration pages shown here reflect main software version 3.20. Some
differences in operation may be observed when comparing the information in this manual
to later software versions. All configuration pages shown apply to the GNS 430W, but
not all apply to the GPS 400W or GNC 420W. Those pages and fields that apply only to
certain 400W Series units are denoted as such.
If any changes made in configuration mode are done on ARINC 429 or RS-232 pages,
the unit must be reset for the changes to take effect. This is accomplished by powering
the unit off and then back on.
400W Series Installation Manual
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NOTE
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