Service Manual 77© 2018 Nortek ASC. Re-use the four screws and the standoffsD. Place the IMU board on the standoffs, and secure with the nuts.E. Check that the connection cable between the board and the IMU is properlyfixedF. Update the Headfile for the instrumentG. Update the firmware of the instrumentH. Update the software versionI. Test the instrument3.3.6 Changing the Wiring Harness (Vector)You will find the necessary tools in the toolkit that came with the instrument; 7/64” and 1/16” hexdriver and silicone grease. Use LocTite as described below, if accessible.A. Access the circuit boardB. Unscrew the two screws that hold the harness in placeC. Press the little tap on the connector, and pull the harness off.D. Attach the connector of the new harness.E. Align the mounting blocks at the round disk with the holes on the mainboard. Add a little LocTite and fasten.F. Add a thin layer of silicone grease on the harness’ O-ring.G. Carefully insert the system back into the housing.3.3.7 Changing the Output Power for Auxiliary Sensors (Vector)You can change the output voltage level that is supplied to external sensors. This is typically neededif an external analog sensor (e.g. OBS) operates in a specific voltage range and the raw batterypower does not fall within this range. The default output voltage level is RAW (battery or externaladapter).
