NorthStar 1200-02-01, Installation Manual

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Section Two—Installation Instructions
PAGE 14 M3 GPS INSTALLATION MANUAL Revision D
The mounting tray is designed slightly oversized so the unit will slide in
easily even if the tray is somewhat distorted during mounting. A set of
self-adhesive mylar shims is provided to fill any space between the top or
bottom of the unit and the mounting tray. One or more shims may be
applied to the cover plates as necessary. Do not deform the cover plates by
installing more shims than needed.
Install the M3 in the panel as described below:
1. Make room for the unit in the instrument panel by relocating other
equipment as necessary. Install the mounting tray in the panel. Wire
the connectors mounted on the rear plate (see Figure 9). When fin-
ished, attach the rear plate to the mounting tray.
2. Supply clean, dry, forced cooling air to the air intake coupler. Cooling
air is required for all installations.
3. Carefully slide the unit into the mounting tray. Unlike the Northstar
M1, the M3 will stop approximately H inch from its final position.
The retaining rod will draw the unit the remaining distance into the
tray when it’s tightened. Use a
J
-inch flat-blade screwdriver inserted
through the hole in the front panel to tighten the rod. Do not over-
tighten!
FIGURE 7 — Mounting Tray (rear view)
CAUTION
Before inserting the unit into the wired mounting tray, dou-
ble-check all wiring. A small but significant number of units
sustain damage because of incorrectly wired connections.
Such damage is not covered under warranty. Improper volt-
age application may result in vaporized circuit-board conduc-
tors within the unit.
13 24
12 1
19 36
18 1
AIR INLET COUPLER
Caution: Forced Air
Must Be Used
P16 (36-PIN CONNECTOR)
GPS ANTENNA CABLE
CONNECTOR
COAXIAL CABLE TO GPS ANTENNA
P15 (24-PIN CONNECTOR)