MotoSAT J1 User And Installation Manual page 87

-72 Rotary Sensor Wait
XF mount only
The XF2 and XF3 Mounts use Quadrature Count Sensors for both Azimuth and
Elevation positioning. These sensors operate properly when the outside
temperature is above 32 degrees F. In extreme cold environments these
sensors must warm up before the mount will begin to move.
These sensors have built in heating circuits that are monitored by the UCB
(Upper Control Board). Typically under extreme cold conditions it may take more
than 1 minute for these sensors to reach 32F. During this time a -72 Rotary
Sensor Wait message will display.
Issue:
The -72 Rotary Sensor Wait message is displayed. Dish will not move with this
display present.
Resolutions:

If outside temperature is below 32F (0C) then wait for several minutes for display
to clear.

Replace Azimuth or Elevation Count Sensor.

Replace UCB (Upper Control Board).
-73 Semaphore Locked
Replace Controller
-74 Locked Semaphore Released.
End of Document Mar 1, 2010
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