KVH Industries TracVision 4 - Manual (Page 55)

Replacing the Main PCB
1. With a PC connected to the switchplate’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 E on
page 81).
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 54.
5. Disconnect all Molex connectors from the main PCB
(see Figure 4-3).
Maintenance
54-0150 55
Main PCB
Power/Data
Fuses
Azimuth
Motor
Elevation
Motor
Azimuth/Elevation
Limit Switches
to RF PCB
Antenna Gyro
Cable Wrap
(External Sensor)
Figure 4-3
Main PCB Connector Locations
(Rear View)
Refer to Section 3.5, “Computer
Diagnostics” on page 47
for
complete details on connecting a
PC to the system via the
maintenance port.