Chapter 4: Disassembly and Reassembly
Type 150/150G/400/400G Course Computers Service Manual 83156-1 25
Type 150/400 Course Computers
4. Fit the FET clamps (12), washers (11) and screws (10), then tighten the screws.
5. Check that the EMC washers (7) are still retained on the underside of the main cover
(6), then fit the main cover over the PCB. Insert and tighten the main cover screws (5).
6. Fit the terminal cover (1) (if necessary).
4.4. Removing/fitting GyroPlus yaw sensor
Removing the GyroPlus yaw sensor
1. Disassemble the Course Computer and remove the PCB (13).
2. Unplug the GyroPlus connector from the socket on the left of the PCB.
3. Unscrew and remove the 2 GyroPlus screws (18) and standoff pillars (19).
4. Remove the GyroPlus yaw sensor (20) and attached insulation pad.
Fitting the GyroPlus yaw sensor
1. Position the GyroPlus yaw sensor (20) under the PCB (13).
2. Fit the 2 standoff pillars (19) and GyroPlus screws (18), and tighten the screws to
secure the sensor to the PCB.
3. Plug the GyroPlus connector into the socket on the PCB.
4. Fit the PCB and reassemble the Course Computer.
After installing a GyroPlus yaw sensor
Course Computer re-calibration
After installing a GyroPlus you MUST re-calibrate the autopilot. If you have an ST6001+
or ST7001+ control unit you will be able to use the AutoLearn steering calibration
function.
Refer to the control unit owner’s handbook for more information about calibrating the
Course Computer.
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