Dismantling; Z082 Control Unit Description; Reassembly - Raymarine ST6000 Service Manual

1. Description
The Z082 Control Unit is SeaTalk compatible and consists of a single PCB built using
surface mount technology. It can be used with both 12V and 24V SeaTalk Course
Computers. The unit can also be functionally tested without the use of special
equipment using the procedure outlined in figure 3.
2. Dismantling (ref fig 1.)
Note: To prevent damage to the printed face of the unit all work should be carried out
on a flat surface covered in foam rubber. A conductive surface will prove beneficial in
helping to prevent dust accumulation caused by static on the workbench.
1. Unscrew and remove the 6 case securing screws from the rear cover. Push each
cable loom assembly back through its grommet so as to obtain working clearance to
the PCB (fig 1).
Note: Failure to push the cables back to ease removal may damage the cable to PCB
assembly. If cables are very tight in grommets apply a small smear of silicon grease
to outer sheath, (grease can be wiped off after reassembly).
If removing the PCB assembly, it will be necessary to de-solder the cables from the
PCB. Great care should be exercised when de-soldering so as not to damage the
pads on the PCB.
2. Unscrew and remove the 10 screws which secure the PCB to the facia.
Note: Do not at this stage remove the screws which secure the LCD assembly to the
PCB. (fig 2.).
3. Before removing the LCD ensure that lint free and preferably anti static finger cots
are worn to prevent the LCD or elastomers getting dirty or greasy.
4. Unscrew and remove the 8 LCD housing retaining screws, (fig 2.). Be careful to
hold the LCD surround, LCD, and diffuser when dismantling. Lift away from the PCB
and store carefully.

3. Reassembly

Reassembly is a straight reversal of the above procedure but note the following
points:
1. Note the correct orientation of the various looms and core colours to the PCB pads
(fig 1).
2. Ensure the LCD is correctly orientated relative to the PCB (fig 2).
3. Ensure the diffuser is correctly orientated relative to the LCD and PCB (fig 2).
4. Always ensure the board is tightened down sequentially to ensure the load is
evenly spread.
Autohelm Autohelm
Autohelm Autohelm
SeaTalk Service Manual 3