Raymarine Autohelm ST6000, Service Manual

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Autohelm
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SeaTalk Service Manual 4
5. When finally refitting the cover to the facia ensure that the cover is in the correct
position relative to the cables and pull the cables back through the grommets as the
cover is lowered onto the facia. Wipe off any excess grease from the cable sheaths.
6. Use only hand screwdrivers for reassembly to ensure screws are not over
tightened and elastomers are compressed uniformly. Rotate screws anticlockwise to
locate in the thread before tightening.
7. Re-check for full function after reassembly to check the LCD has not been
damaged or looms incorrectly soldered.
4. Display Contrast Adjustment
The Display Contrast on the Z082 Control Unit can be manually adjusted to suit
installations where the LCD is normally viewed from significantly above or below, or
when a replacement LCD with different drive characteristics has been fitted.
1. Remove power from the unit.
2. Unscrew the mounting thumb nuts and ease the Control unit forward from its
mounting position.
3. Unscrew and remove the 6 case screws from the rear cover. Push each cable
loom back through its grommet so as to obtain working clearance to the PCB (fig 1).
Note: If cables are tight in grommets then apply a small smear of grease to the outer
sheath, (grease can be wiped off after reassembly).
4. Re-connect power.
5. View Control unit from normal operating angle.
6. Adjust vrl, (see figure 1 for location) to obtain optimum display legibility.
7. Refit the cover to the facia ensuring correct positioning relative to the cables. Pull
the cables back through the grommets as the cover approaches the facia.
8. Secure Control unit in its original position.
Note: Use only hand screw drivers to reassemble to ensure screws are not over
tightened.