Raymarine Autohelm ST6000, Service Manual

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SeaTalk Service Manual 5
4. Gimbal Support Bracket installation
(Spares Kit M096)
This kit comprises of a back case, cable assembly, pivot blocks, support bracket and
pivot retaining screws.
1. Remove the four case screws and take off the front cover and seal.
2. Carefully remove the flexible circuit from the connector in the rear moulding.
3. Remove and discard the pivot block mounting screws and lift away fhe fluxgate
assembly.
4. Build the Fluxgate assembly into the new back case as shown in fig. 1. Use the
new screws supplied to retain the pivot mounting blocks and support bracket. Use
only hand screw drivers for re-assembly to ensure screws are not over tightened.
Rotate screws anticlockwise to locate in the thread before tightening.
5. Carefully insert the flexible circuit tail into the connector in the rear moulding.
Ensure the tail is not twisted and passes over the support bracket (see fig. 1.)
6. Before installing the cover check the gimbal action of the new assembly by tilting
the case in all directions and observing the fluxgate movement.
7. Refit the front cover and seal (again rotating the screws anticlockwise to locate and
tightening with a hand screw driver).
8. Functionally check the Fluxgate with a D.V.M. as follows:
Cable Colour Connector Pin no. Resistance
Screen to Blue 2/4 <10ohms
Red to Green 3/5 < 5 ohms
Red to yellow 3/6 < 5 ohms
Red to Screen 3/2 Open circuit
5. Fluxgate Sensor replacement
(Spares kit M022)
1. Remove the four case screws and take off the front cover and seal.
2. Carefully remove the flexible circuit from the connector in the rear moulding.
3. Remove the pivot block mounting screws and lift away the fluxgate assembly.
4. Build the Fluxgate assembly into the back case as shown in fig. 1. Use only hand
screw drivers for re-assembly to ensure screws are not over tightened. Rotate screws
anticlockwise to locate in the thread before tightening.
5. Carefully insert the flexible circuit rail into the connector in the rear moulding.
Ensure the tail is not twisted and passes over the support bracket (see fig. 1.)