TracPhone V7 Guide

TracPhone V7
1
GPS Replacement Instructions
TracPhone® V7 GPS Replacement Instructions
The following instructions explain how to replace the GPS in a
TracPhone V7.
Tools Required
• #2 Phillips screwdriver
• Cutting pliers
Be sure to avoid causing sharp bends in cables when securing or
routing cables in the following procedure. Sharp bends or kinks
in cables can degrade antenna performance.
IMPORTANT!
Be sure to trim the excess portion of any tie-wraps you install and
collect all tie-wrap trimmings from the antenna to avoid damage
when the unit rotates.
IMPORTANT!
CAUTION
For your own safety, be sure to disconnect power from all wired
components before performing this procedure.
54-0520 Rev. A

TracPhone V7
2
GPS Replacement Instructions
a. Turn off and unplug the modem and control unit.
b. Using a #2 Phillips screwdriver, remove the #10-32
screws securing the radome to the baseplate. Carefully
lift the radome straight up until clear of the antenna
assembly and set it aside in a safe place.
Figure 1 Removing the Radome
c. Disconnect the GPS cable (RJ11) from the PCB.
Figure 2 GPS Cable Connection
d. Using a #2 Phillips screwdriver, remove the #8-32 screw
securing the P-clip to the antenna frame. Save the P-clip
for later use.
#10-32 Screw
GPS Cable PCB
P-clip
#8-32 Screw

TracPhone V7
3
GPS Replacement Instructions
e. Using cutting pliers, cut and remove the seven
tie-wraps securing the GPS cable to the cable bundle.
Figure 3 GPS Cable Tie-wraps
f. Cut and remove the tie-wrap securing the GPS cable to
the reflector.
Figure 4 GPS Attached to Reflector
g. Remove the rubber grommet from the reflector; simply
push the grommet out through the hole.
Tie-wrap (x7)
GPS Cable
Tie-wrap
Grommet
GPS Module
Reflector

TracPhone V7
4
GPS Replacement Instructions
h. Extract the entire length of GPS cable up through the
hole in the reflector.
Figure 5 Extracting the GPS Cable Through the Reflector
i. Grasp the GPS module and pull it free from the
reflector.
Figure 6 Removing the GPS Module
j. Remove any remaining adhesive residue from the
reflector.
GPS Cable
GPS Module
GPS Module

TracPhone V7
5
GPS Replacement Instructions
k. Feed the cable of the replacement GPS down through
the hole in the reflector.
l. Reinstall the rubber grommet to prevent abrasion from
the metal edges of the hole in the reflector (see Figure 4
on page 3).
m. Peel off the paper backing from the base of the
replacement GPS module to expose the adhesive. Then
press the GPS module down firmly onto the reflector in
the orientation shown in Figure 4 on page 3. Apply
pressure to make sure the adhesive bonds to the
reflector.
n. Using a tie-wrap, loosely secure the GPS cable to the
reflector (see Figure 4 on page 3).
o. Connect the GPS cable (RJ11) to the PCB (see Figure 2
on page 2).
p. Using seven tie-wraps, secure the GPS cable to the cable
bundle at the locations shown in Figure 3 on page 3.
q. Secure the GPS cable to the antenna frame using the
P-clip you removed earlier.
r. Reinstall the radome.
s. Plug in the modem and control unit and apply power.
The GPS replacement process is complete!
Avoid kinking the end of the GPS cable. Loop the tie-wrap
loosely around the cable; do not pull it taut. Also, be sure to
loop the tie-wrap through the bottom of the reflector so that
the tie-wrap’s buckle rests against the bottom of the
reflector and not against the cable.
IMPORTANT!