Replacing the Main PCB
1. With a PC connected to the ADCU’s maintenance
port, apply power to the antenna unit.
2. Record the system serial number for later re-entry
(the serial number is listed at the beginning of the
startup sequence, as shown in
Appendix F on
page 143
).
3. Disconnect power from the antenna unit and the
IRD.
4. Remove the PCB cover, as explained in
“Removing
the Main PCB Cover” on page 106
.
5. Disconnect all Molex connectors from the main PCB
(see Figure 5-3).
Maintenance
54-0147
107
Main PCB
Power/Data
Fuses
Azimuth
Motor
Elevation
Motor
Azimuth/Elevation
Limit Switches
to RF PCB
Antenna Gyro
Cable Wrap
(External Sensor)
Figure 5-3
Main PCB Connector Locations
(Rear View)
Refer to Section 4.6, “Computer
Diagnostics” on page 98
for
complete details on connecting a
PC to the system via the
maintenance port.
Summary of Contents for TracVision G4
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