ELECRAFT KRX3 Instrukcja Właściciela Pobierz pdf (Strona 10)

Installing the KXV3 Board

SPECIAL NOTE TO KIT BUILDERS: If you were directed here to install your KXV3

module as part of the overall kit assembly, begin with the following step.

Cut jumpers W1 and W2 on the RF board (the large board filling the bottom of the chassis). These jumpers

are located under where you just removed the KIO3 boards (see Figure 7). Take care to identify the correct

jumpers. Do not cut nearby jumpers W20 or W21! It is not necessary or desirable to unsolder the jumpers.

Simply cut them with your diagonal cutters, taking care not to lose the bits of the jumper wire inside the K3, but

be sure to cut the ends short. No more than 1/8” (3 mm) of jumper should be left at each solder pad to avoid the

possibility of its shorting to a nearby circuit.

Figure 7. Locating Jumpers W1 and W2.

Inspect the white connector at the end of the TMP cable. The side nearest the connector holes must be

smooth and flat. Use your diagonal cutters or a hobby knife to cut away any bumps or ridges (see Figure 8 ).

Figure 8. Preparing TMP Cable for Installation.

CAUTION: The KXV3 board is ESD sensitive. Wear a grounded wrist strap or touch an unpainted

metal ground before handling it.

Remove the KXV3 board assembly from its packaging. If the black panel is mounted on the assembly,

remove it. Set the screws and washers aside to be installed later.

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ELECRAFT KRX3 Instrukcja Właściciela Strona 10