NorthStar Navigation EXPLORER 657 Changing the plug-in card, Removing the display unit

Changing the plug-in card

Gold contacts under here

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CAUTION

Handle plug-in cards carefully. Keep them in their protective cases when not plugged into the 657.

Keep the holder in place in the 657 at all times to prevent moisture from entering the card compartment.

1-4 Removing and replacing the display unit

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Card

Holder

Turn the 657 off (see section 2-2).

Pull the card holder out of the 657 and pull any card out of holder.

Put the card in its case.

Push new card into holder. Ensure the gold contacts are on the outer edge and underneath (see above).

Keep the card’s case.

Push card holder fully into 657

If the display unit is bracket mounted then the display unit can easily be removed and replaced for security or protection.

Removing the display unit:

1Turn the display unit off (see section 2-2) and put the dust cover on.

2Loosen the knob on the mounting bracket and lift the unit off the bracket.

3Unplug the connectors from the display unit; turning each locking collar anticlockwise until you can pull the plug out.

4Push the attached dust covers over the exposed ends of the connectors.

5Store the display unit in a dry clean place, such as the optional Northstar carry bag.

Replacing the display unit

1Remove the dust covers from the connectors. Plug the connectors into the back of the display unit:

Match the connector’s color to the socket color.

Insert each connector and turn the locking collar clockwise until it is finger tight.

Nothing will be damaged if a cable is plugged into the wrong socket by mistake.

2Hold the display unit in place on the mounting bracket. Adjust the tilt of the display for best viewing, then hand tighten the knob on the mounting bracket. Remove the dust cover.

Mounting bracket

Knob

Northstar Explorer 657 Installation and Operation Manual 9